JPH0631616B2 - Pumping device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pressure-feeding device capable of pressure-feeding an object to be pressure-fed such as mortar and concrete having relatively poor fluidity.

(Prior Art) Conventionally, as a pumping device of this type, for example, Japanese Utility Model Publication 58
There is a concrete delivery machine as described in Japanese Patent Publication No. 54978. This is a piston that slides in the cylinder, and alternately fills the accommodation space in the cylinder from the receiving inlet with the concrete and sends the filled concrete to the outlet while rotating the cylinder. The receiving port and the sending port can be alternately communicated with the accommodation space.

Further, there is a squeeze pump for slurry as described in Japanese Utility Model Publication No. 50-29661. This is because a large number of rows of sliders are radially guided toward the outer circumference of the rubber hose that penetrates the closed casing, and at least one place is continuously pushed by the cam inside the cylinder so that it is always in the full pushing position. In the case of pumping by means of a pump, the inner cam to be installed is divided into a large number of cam rings each having a linear surface parallel to each axial direction, and they are connected with each other while appropriately shifting the phases with through bolts. At the same time, the inner cam is pivotally supported by the lid fittings that are detachably provided on both ends of the casing, the stator is fitted on the rubber hose, and the slider group guided by the stator, and the slider group Each cam ring can be rotated by pulling out the through bolt outside the casing with the fitted inner cam etc. being integrally assembled on the lid fitting so that the phases can be matched. One in which the.

Incidentally, there is a device for periodically supplying a fixed amount of liquid as described in JP-A-54-61217. This is an elongated pipe for supplying liquid, a liquid tank for supplying the liquid into the pipe at one end of the pipe, and a liquid tank for supplying the liquid into the pipe at the other end of the pipe. And a liquid receiving liquid for receiving the liquid, and further, a first stopper device for appropriately blocking the passage of the liquid in the pipe at an appropriate position on the outside of the pipe, and an appropriate portion of the outer surface of the pipe also outwardly. A pressing device for pressing the liquid in the pipe of the portion toward the receiving liquid by pressing in a timely manner and a second stopper device similar to the above-mentioned first stopper device along the liquid feeding direction. They are installed in the order mentioned above at appropriate intervals.

(Problems to be Solved by the Invention) However, in the concrete delivery machine as described above, it is necessary to separately provide the power for driving the piston and the power for rotating the tubular body. ,
Since the concrete is sent out by the piston, there has been a problem that the power for driving the piston needs to have a considerably large output.

Further, in the squeeze pump for slurry as described above, since the rubber hose, the slide group, and the cam in the cylinder are all housed in the closed casing, the structure of the squeeze pump itself becomes complicated and maintenance is difficult. There was a troublesome point. In addition, when trying to increase the amount of pressure-transferred material per unit time using a relatively thick rubber hose, the difficulty of not easily replacing the thick rubber hose, and the cylindrical comb or closed casing surrounding the rubber hose, etc. However, it is difficult to finely adjust the pressure of the rubber hose by the group of sliders according to the object to be pressure-fed. And
Even when the squeeze pump is not in use, the rubber hose
Some of them are pressed by the slide group and remain elastically deformed, and the difficulty of damaging the rubber hose and deterioration of elastic force in this part quickly, and frequently changing the rubber hose In addition to this, there was a problem that the replacement work of the rubber hose itself was very troublesome. By the way, since the group of sliders is arranged to radially divide the circumference into three equal parts to compress the rubber hose, the elastic deformation amount of the rubber hose increases in the compressed state, and the rubber hose itself is easily damaged, Deterioration of elastic force becomes faster,
Moreover, since the rubber hose is relatively thick due to its durability and other problems, it is difficult to reliably close the inside of the rubber hose.

Further, in the device for periodically supplying the liquid as described above, the liquid paint in the ceramic painting machine having good fluidity can be supplied. However, it is not suitable for the pressure-feeding of such objects to be pressure-fed. In other words, this is because liquid paint with good fluidity is supplied by a pipe, so a thick rubber hose for pumping objects to be pumped such as mortar and concrete with relatively poor fluidity is sufficiently sandwiched by a strong force. It is not a robust structure that can be pressed (because a stopper or pressing tool that presses the pipe is attached to a relatively long advancing / retreating rod that is pressed by the cam, when pressing a thick rubber hose, the advancing / retreating rod is pressed. And the stopper, etc. may bend.) Moreover, the stopper or pressing tool presses the pipe arranged along the fixing plate only on one side so that the pipe is pressed against the fixing plate. Since it is elastically deformed as it is attached, the fixing plate of the pipe pressed against the flat fixing plate is compared with the wrinkle part, and the stopper of the pipe pressed by the stopper or the pressing tool is pressed. Over, very elastic deformation of the pusher Kanagawa part number, along with the inevitable damage to this portion becomes severe, replacement due to damage of the pipe were difficulties such as faster. Then, there is a difficulty in that the pressing state of the pipe by the stopper, the pressing tool and the fixing plate cannot be adjusted according to the object to be sent. Even when the pipe is not used, any part of the pipe is still elastically deformed by being pressed by the fixing plate by the stopper or the pressing tool. There were some problems such as deterioration of the product quickly.

(Means for Solving the Problems) Therefore, the present invention was created in order to solve the above-mentioned difficulties and the like. Specifically, a cylindrical elastic tubular body 20 having appropriate elasticity is The inlet 21 at the upper end and the outlet 22 at the lower end are held in a substantially vertical shape on the machine frame base A1. Then, a pair of moving machine frames A2 and A2 are attached to the left and right of the machine frame base A1 so as to be movable back and forth in a predetermined direction in which the elastic cylindrical body 20 is pressed. Then, a pair of compression bodies 11 capable of pressing the elastic cylinder body 20 are slidably mounted on the machine frame base A1, and the pair of compression bodies 11 are arranged along the cylinder center direction of the elastic cylinder body 20. A plurality of sets are arranged at appropriate intervals. Further, the cam shafts 6a and 6b to which the plurality of cams 7 are fixed are attached to the pair of moving machine frames A2 and A2, respectively. Further, the drive motor 1 is used as a power source to rotate the cam shafts 6a and 6b, and the rotational force of the cam shafts 6a and 6b is transmitted to the compression bodies 11 via the cams 7, respectively, so that Each of the compression bodies 11 sequentially presses the elastic cylindrical body 20 so that the object 40 to be pressure-conveyed such as concrete in the elastic cylindrical body 20 can be sequentially pumped toward the delivery port 22 of the elastic cylindrical body 20. Moreover, the forward and backward directions of the pair of moving machine frames A2 and A2 and the sliding direction of the pair of compression bodies 11 are made to coincide with each other so that the elastic cylinder body 20 is pressed by the pair of compression bodies 11 respectively. A means for arranging the pair of moving machine frames A2 and A2 so as to be adjustable is adopted.

(Operation) Then, in the elastic tubular body 20, the inlet 21 at the upper end and the outlet 22 at the lower end are held substantially vertically on the machine frame base A1, and the pair of mobile machine frames A2, A2 are It is attached to the left and right of the machine frame base A1 so as to be movable back and forth. Then, the pair of compression bodies 11 are attached to the machine frame base body A1, and the drive motor 1
Is pressed and slid by the cams 7 of the cam shafts 6a and 6b that are connected to and rotate with each other, and the elastic tubular body 20 is pinched from the left and right.
The object 40 to be pressure-fed in the elastic tubular body 20 is fed through the elastic tubular body 20 by a plurality of sets of compression bodies 11 arranged at appropriate intervals along the tube center direction of the elastic tubular body 20. Are sequentially pumped toward. At this time, the elastic tubular body 20 is elastically deformed substantially symmetrically with respect to the tubular center, and is delivered to the delivery port 2 while being elastically deformed.
Sequential pressure is applied toward 2. Then, when each of the moving machine frames A2 is moved with respect to the machine frame base body A1, the cam shafts 6a and 6b are separated or approached to the elastic cylindrical body 20, and the cam 7 is moved.
The sliding range of each compression body 11 due to
The zero pressure state changes, and the pressure-feeding state of the object 40 to be pressured can be changed. In addition, when the moving base frames A2 are largely moved away from the machine frame base body A1, all the cams 7 are separated from the elastic cylinder body 20 and the elastic cylinder body 20 is released from the compression state.

(Example) Hereinafter, the present invention will be described with reference to illustrated examples.

In the figure, A is a machine frame including a machine frame base A1 and a pair of mobile machine frames A2 and A2 arranged on the left and right of the machine frame base A1.
The drive motor 1 is attached to the machine frame base A1 of the machine frame A, and the rotational force of the drive motor 1 is appropriately decelerated and output from the drive shaft 2. And on this drive shaft 2,
The drive sprockets 3a and 3b are fixed to each other, and the driven sprockets 5a and 5b fixed to the lower ends of the pair of cam shafts 6a and 6b respectively disposed on the drive sprockets 3a and 3b and the left and right moving machine frames A2 and A2. And to chain 4
A and 4b are respectively wound. That is, the pair of cam shafts 6a and 6b vertically supported by the moving machine frame A2 are formed to be rotated by the drive motor 1. Moreover, the pair of left and right moving machine frames A2 and A2
Is attached to the machine frame base A1 so as to be movable back and forth toward the machine frame base A1 in a substantially horizontal direction.

Further, the machine frame base body A1 is provided with an elastic cylinder body 20 formed of a rubber material (or a synthetic resin material) or the like in a thick-walled cylinder shape having a relatively large elasticity, and an inlet 21 at an upper end thereof.
The cylinder core is arranged so as to have a substantially vertical shape with the lower end and the delivery port 22 at the lower end held. A pair of substantially rectangular plate-like compression bodies 11 (11
a, 11b, 12a, 12b, 13a, 13b, 14
a, 14b) are slidable in the horizontal direction and are elastic cylinders 20.
It is mounted on the machine frame base A1 so that it can be pressed.
Moreover, the pair of compression bodies 11 (11a, 11b, 12
a, 12b, 13a, 13b, 14a, 14b) are provided in plural sets at appropriate intervals (equal intervals) along the tube center direction (vertical direction) of the elastic tube body 20. By the way, in this compression body 11, side rollers 16 and 16 which can freely roll in a roller guide groove 17 provided in the machine frame base A1 are axially supported at both end portions thereof, respectively, and the compression body 11 slides vertically. It is formed so that it can be performed smoothly without rattling in the direction.

Further, the cam shafts 6a, 6b are provided with a plurality of substantially disk-shaped cams 7 (7a, 7b, 8) that press the base end portion of the compression body 11 so that the pair of compression bodies 11 sequentially press the elastic cylinder 20.
a, 8b, 9a, 9b, 10a, 10b) are fixed respectively. Moreover, each of the cams 7 slides the compression bodies 11 as shown in FIG. 5, for example, and the pair of compression bodies 11 sequentially presses the elastic cylinders 20 so that the inside of the elastic cylinders 20 is compressed. The object to be pumped 40 such as concrete
It is formed so that pressure can be sequentially fed toward the 0 delivery port 22.

In addition, in the center of the base end portion of the compression body 11 that comes into contact with the cam 7,
A center roller 15 is rotatably supported to reduce friction with the cam 7, and the tip of the compression body 11 is formed in a round shape so as not to damage the elastic cylinder 20 when pressing it. ing. In addition, in the pair of left and right compression bodies 11, one compression body 11 (11a, 12a, 13
a, 14a) and the other compression body 11 (11b, 12b, 1)
3b, 14b) are slightly offset from each other, and when the elastic cylinder 20 is compressed, the object to be pumped 40 such as concrete in the elastic cylinder 20 is made common to the curved surface at the tip of the compression body 11. It is formed so that it can be smoothly pressure-fed in the tangential direction and damage to the elastic cylindrical body 20, the compression body 11, the cam 7, and the like due to the clamping pressure can be prevented.

Then, in the illustrated example, the machine frame A is replaced with the elastic cylindrical body 20.
And a machine frame base A1 on which the compression body 11 is mounted, and a pair of left and right moving machine frames A2 on which cam shafts 6a and 6b are pivotally supported.
A mounting rod 30 that is configured separately from A2, and has the machine frame base A1 and the mobile machine frames A2 and A2 attached to the machine frame base A1.
And a holding portion 31 through which the mounting rod 30 can be inserted and which is mounted on the moving machine frames A1 and A2.
The left and right moving machine frames A2 and A1 are configured to be horizontally advanced and retracted with respect to the machine frame base A1 by rotating the adjustment handle 32 screwed to the screw portion of the cam 7, the compression body 11, and The compression state of the elastic cylindrical body 20 can be adjusted by the compression body 11 by adjusting the distance.

Moreover, the forward and backward directions of the pair of moving machine frames A2 and A2 and the sliding direction of the pair of compression bodies 11 are matched to each other so that the elastic cylinder body 20 is pressed by the pair of compression bodies 11 respectively.
It is configured to be adjustable by the advancing / retreating operation of the pair of mobile device frames A2 and A2 with respect to 1.

In the figure, 23 is a hopper that communicates with the inlet 21 of the elastic tubular body 20, and 24 is a rotor that communicates with the outlet 22 of the elastic tubular body 20. In this rotor 24, from the outlet 22 of the elastic tubular body 20 For example, to the object to be pressure-fed 40 that has been pressure-fed,
A high pressure is appropriately applied by compressed air or the like so that the object 40 to be pressure-fed is transferred in the transfer hose to which the rotor 24 is connected.

The specific configurations, shapes, and dimensions of the machine frame A, the machine frame base A1, and the moving machine frame A2, the specific shapes, dimensions, and numbers of the cam 7 and the compression body 11 are limited to those shown in the drawings. Instead, it can be set freely as appropriate. In addition, the elastic tubular body 20
Is appropriately made of an elastic material, but as a reinforcement thereof, a wire made of metal (or wire made of synthetic resin) or the like may be used in a buried state.

The present invention is constructed as described above, and its operating state will be described with reference to FIG.

First, the drive motor 1 is driven to rotate the cams 7 through the drive shaft 2, the drive sprockets 3a and 3b, the chains 4a and 4b, the driven sprockets 5a and 5b, and the cam shafts 6a and 6b. The elastic cylinder 20 is closed by the pressure of the bodies 14a and 14b and the hopper 2
The object 40 to be pressured in 3 is filled in the elastic cylindrical body 20 from the receiving port 21 by gravity (or forced external force, etc.) (FIG. 5 (I)), and the medium pressure bodies 12a, 12b, Thirteen
a and 13b expand to increase the filling amount of the object to be pumped 40 in the elastic tubular body 20 (FIG. 5 (II)), and the elastic tubular body 20 is closed by the compression of the upper compression bodies 11a and 11b. At the same time, the lower compression bodies 14a, 14b expand (FIG. 5 (III)), and the middle compression bodies 12a, 12b, 13
a and 13b are gradually narrowed to each other, and the inner wall surface of the elastic cylindrical body 20 presses the object to be pumped 40 toward the delivery port 22 (Fig. 5 (IV)), and the middle pressure bodies 12a, 12b, 13a, 13 are pressed.
The elastic cylinder 20 is closed by the pressure of b, and the object 40 to be pressured is sequentially pressed toward the outlet 22 (FIG. 5 (V)), and the elastic cylinder is compressed by the pressure of the lower compression bodies 14a and 14b. While closing the body 20, the upper compression body 11a,
11b expands to each other, and the object to be pressure-fed 40 is filled from the receiving port 21 into the elastic cylindrical body 20 (Fig. 5 (VI)), and then returns for the first time, so that the middle pressure bodies 12a, 12b, 13a, 13b mutually It gradually expands to increase the filling amount of the object 40 to be pressure-fed (FIG. 5 (VII)). By continuously repeating this, the object 40 to be pressure-fed is sequentially pressure-fed from the receiving port 21 toward the feeding port 22. The operating state of the compression body 11 is not limited to this, and can be appropriately set freely depending on the number of compression bodies 11 and the size and shape of the elastic cylindrical body 20. by the way,
The object 40 to be pressure-fed, which has been sequentially pressure-fed at the delivery port 22 of the elastic tubular body 20, is pressure-fed into the rotor 24 to which a high pressure is appropriately applied by compressed air or the like, and is appropriately transferred by a high pressure by compressed air or the like. Will be transported inside.

(Effects of the Invention) Therefore, the pressure feeding device of the present invention is a machine in which a cylindrical elastic tubular body 20 having appropriate elasticity is held with a receiving port 21 at the upper end and a feeding port 22 at the lower end. The elastic cylinders 20 are arranged in a substantially vertical shape on the frame base body A1 and are provided on the left and right sides of the machine frame base body A1.
A pair of movable machine frames A2 and A2 are attached so as to be movable back and forth in a predetermined direction for compressing, and a pair of compression bodies 11 capable of compressing the elastic cylindrical body 20 are slidably mounted on the machine frame base body A1. Along with the pair of compression bodies 11, the elastic cylinder 20
A plurality of sets are arranged at appropriate intervals along the direction of the cylinder center, and the cam shafts 6a and 6b to which the plurality of cams 7 are fixed are attached to the pair of moving machine frames A2 and A2, respectively, and the drive motor 1 is powered. The cam shafts 6a and 6b are formed so as to rotate, and the rotational force of the cam shafts 6a and 6b is transmitted to the compression bodies 11 via the respective cams 7 and the pair of compression bodies 1
Each of them is configured to sequentially press the elastic cylindrical body 20 so that the object 40 to be pressure-conveyed such as concrete in the elastic cylindrical body 20 can be sequentially pumped toward the outlet 22 of the elastic cylindrical body 20. The advancing / retreating directions of A2 and A2 and the sliding direction of the pair of compression bodies 11 are made to coincide with each other, and the pair of moving bodies frame A2 with respect to the machine frame base body A1 is set so that the elastic cylinder body 20 is pressed by the pair of compression bodies 11. , A2 is configured to be adjustable by advancing and retracting movements, so that it becomes possible to reliably and smoothly press-feed the mortar, which has relatively poor fluidity, concrete, powdered cement or the like 40 to be pressure-fed. Moreover, when trying to increase the amount of the object 40 to be pressure-fed per unit time,
Depending on the fluidity, hardness, particle size, etc. of the object to be pressure-fed 40 itself, the elastic cylinder 20 can be easily replaced with a relatively thick elastic cylinder 20 or another appropriate elastic cylinder 20. The structure of the pressure-feeding device itself can be simplified, its maintenance and the like can be facilitated, and the pressure-feeding device is resistant to failure and excellent in durability and economy.

Further, since the elastic tubular body 20 is disposed in the machine frame base A1 in a substantially vertical state with the receiving port 21 at the upper end portion and the delivery port 22 at the lower end portion held therein, the elastic tubular body 20 is mounted in the machine frame. The substrate A1 can be held reliably and stably. Moreover, the mortar, which has a relatively poor fluidity, concrete, or the object to be pressure-fed 40 such as powdered cement, can drop in the elastic cylinder 20 toward the outlet 22 due to its own weight, It becomes possible to promote smooth pressure feeding of the object 40 to be pressure fed.

In particular, since a pair of mobile machine frames A2 and A2 are attached to the left and right of the machine frame base A1 so as to be movable back and forth in a predetermined direction that presses the elastic tubular body 20, the machine frame base A of the mobile machine frame A2 is attached.
The position with respect to 1 can be changed, the distance between the cam 7 and the compression body 11 can be freely adjusted, and
The adjustment can be performed easily and surely, and an optimal amount of clamping pressure of the elastic tubular body 20 by the compression body 11 according to the object to be pressure-fed 40 or according to the amount of pressure-feed can be obtained. Moreover, when the mobile device frame A2 is largely moved, the elastic tubular body 20 is in a state in which any one of the elastic tubular bodies 20 is elastically deformed by being pressed by the compression body 11 when not in use. It becomes possible to cancel the above, and it becomes possible to suppress damage to the elastic cylinder 20 and deterioration of elastic force as much as possible. Further, replacement work of the elastic tubular body 20 can be performed very easily.

Further, a pair of compression bodies 11 capable of pressing the elastic cylinder body 20 are slidably mounted on the machine frame base A1, and the pair of compression bodies 11 are arranged along the cylinder center direction of the elastic cylinder body 20. Since a plurality of sets are arranged at appropriate intervals, the entire elastic cylindrical body 20 can be comfortably and reliably pressed by the compression body 11, and the elastic cylindrical body 20 can be sequentially pressed toward the delivery port 22. Become. Further, the elastic tubular body 20 can be pressed symmetrically from the left and right, so that the elastic tubular body 20 is elastically deformed in a well-balanced manner, and local elastic deformation of the elastic tubular body 20 is prevented. The durability of itself will also be improved.

Then, the cam shafts 6a, 6 to which the plurality of cams 7 are fixedly attached.
b is attached to each of the pair of moving machine frames A2 and A2, the cam shafts 6a and 6b are formed to be rotated by the drive motor 1, and the rotational force of the cam shafts 6a and 6b is set to the respective cams 7a and 6b. Is transmitted to each compression body 11 via
Each of the pair of compression bodies 11 sequentially presses the elastic cylindrical body 20,
Since the object 40 to be pressure-conveyed such as concrete in the elastic cylinder 20 can be sequentially pressure-fed toward the outlet 22 of the elastic cylinder 20, the cam shafts 6a and 6b can be reliably rotated by the single drive motor 1. The object 40 to be pressure-fed in the elastic tubular body 20 is smoothly pressure-fed toward the delivery port 22, and the driving motor 1 having a relatively small output can obtain a large force-feeding force of the object 40 to be pressure-fed. Become.

Further, the advancing / retreating directions of the pair of moving machine frames A2, A2 and the sliding direction of the pair of compression bodies 11 are made to coincide with each other, and the pair of compression bodies 1 are arranged.
The state in which the elastic cylindrical body 20 is clamped by the respective ones is set to the machine frame base A1.
Since it is configured to be adjustable by the forward / backward movement of the pair of mobile device frames A2 and A2 with respect to the
The distance between and can be finely adjusted, and the adjustment can be easily and surely performed. By the compression body 11 according to the property of the object 40 to be pressured or according to the amount of pressure feeding per unit time. It is possible to easily obtain the optimum clamping state of the elastic tubular body 20.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an exploded perspective view,
FIG. 2 is a partially cutaway front view, FIG. 3 is a side view, FIG. 4 is a cross-sectional plan view, and FIG. 5 is a vertical cross-sectional front view showing a state in which an elastic cylinder is pressed. A ... Machine frame, A1 ... Machine frame base, A2 ... Mobile machine frame, 1 ... Drive motor, 2 ... Drive shaft, 3a ... Drive sprocket, 3b ... Drive sprocket, 4a ... Chain, 4b ...
Chain, 5a ... driven sprocket, 5b ... driven sprocket, 6a ... cam shaft, 6b ... cam shaft, 7 ... cam, 7a ... cam, 7b ... cam, 8a ... cam, 8b
... Cam, 9a ... Cam, 9b ... Cam, 10a ... Cam, 10
b ... cam, 11 ... compression body, 11a ... compression body, 11b ... compression body, 12
a ... compression body, 12b ... compression body, 13a ... compression body, 13b
... compression body, 14a ... compression body, 14b ... compression body, 15 ... center roller, 16 ... side roller, 17 ... roller guide groove, 20 ... elastic cylinder body, 21 ... receiving port, 22 ... sending port, 23 ...
Hopper, 24 ... Rotor, 30 ... Mounting rod, 31 ... Holding part, 32 ... Adjusting handle, 40 ... Pressed object.

Claims (1)

[Claims] 1. A cylindrical elastic tubular body having appropriate elasticity is disposed in a machine frame base in a substantially vertical state with a receiving end at its upper end and a sending outlet at its lower end held. A pair of moving machine frames are attached to the left and right of the machine frame base body so as to be able to move forward and backward in a predetermined direction to press the elastic cylinder body, and a pair of compression bodies that can press the elastic cylinder body are slid on the machine frame base body. The pair of compression bodies are freely mounted, and a plurality of pairs of the compression bodies are arranged at appropriate intervals along the tube center direction of the elastic tube body. The camshafts are attached to the compression shafts to rotate the camshafts, and the rotational force of the camshafts is transmitted to the compression bodies via the cams. Of the elastic cylinder to direct the object to be pumped, such as concrete, to the outlet of the elastic cylinder. The pair of moving machine frames are aligned with the sliding direction of the pair of compression bodies so that the elastic cylinder body is pressed by the pair of compression bodies against the machine frame base. A pumping device configured to be adjustable by advancing and retracting a pair of moving machine frames.