KR100889492B1 - Mortar pump - Google Patents

Abstract

The present invention relates to a mortar pump for transferring cement mortar to a working position in a construction site, and more particularly, to a pump pumping operation of a piston by operation of a mono pump and a cylinder used to transfer a substance having high concentration and high viscosity. The present invention relates to a mortar pump in which a discharge pressure of mortar is increased by installing a piston pump to face each other with a pumping chamber having a discharge port formed therebetween.

The mortar pump according to the present invention includes a spiral rotor 14 connected to a rotary shaft 12 and a joint 13 rotated by the driving of the motor M, and a discharge passage 15a corresponding to the outer circumferential surface of the rotor. The stator 15 has a stator 15 is coupled to the inside of the casing 11, the upper end of the casing 11, the mono pump 10 is installed in the hopper 17 through the inlet 16 through which cement mortar flows; The pumping chamber 22 in which the piston 23 of the cylinder 21, which is hydraulically or pneumatically operated, is connected to the outlet port 18, which is the other end of the monopump 10, and is connected in a straight line. Is provided, the discharge port 24 is formed on the upper surface of the pumping chamber 22, the discharge port 24 is characterized by consisting of a piston pump 20 coupled to the connector 26 with the weight ball 25 is built-in It is done.

Cement, Mortar, Pump, Mono Pump, Piston Pump, Discharge Pressure.

Description

Mortar Pumps {MORTAR PUMP}

1 is a front view showing a first embodiment of a mortar pump according to the present invention

2 is a plan view showing a first embodiment of a mortar pump according to the present invention

3 is a left side view showing a first embodiment of a mortar pump according to the present invention.

4 is a sectional view along the line A-A in FIG.

5 is an operating state diagram according to the first embodiment of the present invention;

6 is a plan view showing main parts of a mortar pump of a second embodiment of the present invention;

7 is a front sectional view showing main parts of a mortar pump of a second embodiment of the present invention;

8 is an operating state diagram according to a second embodiment of the present invention

9 is a front configuration diagram showing main parts of a third embodiment of the present invention;

<Explanation of Signs of Major Parts of Drawings>

10: monopump 11: casing

12: shaft 12a: screw

13: joint 14: rotor

15: stator 15a: discharge passage

M: Motor 16: Inlet

17: Hopper 18: outlet

20: piston pump 21: cylinder

22: pumping chamber 23: piston

24 discharge port 25 weight ball

26: connector 30: reducer

30a: input shaft 31, 32: pulley

33 belt 34 bearing housing

35: control box 36: switchgear

37: hose 38: bracket

The present invention relates to a mortar pump for transferring cement mortar to a working position in a construction site, and more particularly, to a pump pumping operation of a piston by operation of a mono pump and a cylinder used to transfer a substance having high concentration and high viscosity. The present invention relates to a mortar pump in which a discharge pressure of mortar is increased by coupling a piston pump to a pumping chamber having a discharge port therebetween.

In general, the construction site uses a mortar pump to supply the mortar from the ground floor to the working position of the ground or underground floor. The mortar pump here is not a large mortar pump for ready-mixed concrete used in the construction of high-rise apartments, but a small mortar pump normally used for waterproofing or plastering.

As the mortar pump, a piston pump for discharging mortar by driving a piston by hydraulic or motor driving is widely used, and by connecting two piston pumps side by side, one of them moves forward to discharge mortar through a discharge port, and the other One is to retract the mortar through the suction port while retracting, the structure is a pumping passage for sucking and discharging the mortar as the piston moves forward and backward, and the suction port is formed in the lower end of the pumping passage, the discharge port is formed on the upper side respectively A weight ball is installed on the inlet and the outlet, respectively, and a pumping chamber is formed to be alternately opened and closed by the weight ball. An inlet pipe having a hopper for receiving mortar is connected to the inlet and a working position at the outlet. A hose for feeding mortar is connected.

However, in the conventional mortar pump having such a structure, since two piston pumps are connected in parallel in a complicated structure, the discharge pressure was not much different from that of using one piston pump even though two piston pumps were used. In addition, since the mortar flows from the hopper to the pumping chamber only by its own weight, the mortar pressure is weak in the pumping chamber, so that the leakage of the mortar discharge amount has been high.

On the other hand, the pump which is widely used to quantitatively transfer high-viscosity and high-viscosity liquid materials is 'MONO PUMP', which is a forced discharge type, but usually has a large casing diameter where the rotor is installed. There is a problem that the mortar pump to transfer the mortar to the place where the working position is high (usually more than two floors) because the discharge pressure is weak due to the structural disadvantage that can not be.

Accordingly, the present invention is to solve the above problems, the object of the discharge pump is a monopump which is used to convey a substance having a high concentration and high viscosity, and a piston pump in which the piston is pumped by the operation of the cylinder, By combining the pumping chamber with the gap formed therebetween, the mortar contained in the hopper can be forced to the pumping chamber by the mono pump, and by pushing the pumped mortar once more through the piston pump, the discharge pressure of the mortar with strong force To provide a mortar pump that can increase and also prevent the material separation of the mortar caused by the vibration at this time.

In order to achieve the above object, the mortar pump according to the present invention has a spiral rotor 14 connected to a rotating shaft 12 and a joint 13 which rotates by driving of a motor M, and corresponds to an outer circumferential surface of the rotor. The stator 15 having the discharge passage 15a is coupled to the inside of the casing 11, and the hopper 17 is installed at the inlet 16 through which the cement mortar flows into the upper surface of one end of the casing 11. Mono pump 10;

The pumping chamber 22 in which the piston 23 of the cylinder 21, which is hydraulically or pneumatically operated, is connected to the outlet port 18, which is the other end of the monopump 10, and is connected in a straight line. Is provided, the discharge port 24 is formed on the upper surface of the pumping chamber 22, the discharge port 24 is made of a piston pump 20 coupled to the connector 26 in which the weight ball 25 is embedded It features.

In addition, the monopump 10 is equipped with a reducer 30 to reduce the rotational speed of the rotor 14, the shaft of the motor 12 and the input shaft of the reducer 30 pulleys or sprockets ( 31, 32 is coupled to the belt or chain 33 is connected, characterized in that comprises the rotation shaft 12 is connected to the output shaft of the reducer (30).

In addition, the rotating shaft 12 located below the inlet 17 of the monopump 10 is characterized in that it comprises a screw (13a) is coupled.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail, referring an accompanying drawing.

1 is a front view showing a first embodiment of the mortar pump according to the invention, Figure 2 is a plan view showing a first embodiment of the mortar pump according to the present invention, Figure 3 is a mortar pump of the present invention 4 is a left side view of the first embodiment, and FIG. 4 is a cross-sectional view taken along the line AA of FIG. 2.

As shown in Figures 1 to 4, the mortar pump according to the present invention to the mono pump 10 and the piston pump 20 to increase the discharge pressure of the mortar in transferring the supplied cement mortar to the working position These are coupled to each other with a pumping chamber 22 in which an ejection opening 24 through which mortar is discharged is formed.

The monopump 10 is composed of a casing 11 and a motor M in appearance, and the piston pump 20 is a cylinder 21 that operates hydraulically or pneumatically, and the piston 23 pumps inwardly. It consists of a pumping chamber 22 of a cylindrical tube.

The casing 11 of the monopump 10 is coupled to a stator 15 in which a rotor 14 for transporting mortar is coupled to a central portion thereof. The rotor 14 has a spiral outer shape and a motor ( It is connected to the rotating shaft 12 and the joint 14 which are rotated by the drive of M), The stator 15 has the discharge passage 15a in which the inner peripheral surface is formed so that it may correspond with the outer peripheral surface of the rotor 14. .

In addition, a hopper 17 is connected to the inlet 16 through which the cement mortar flows into the upper surface of one end of the casing 11, and a flange (not shown) is formed on the side of the outlet 18 which becomes the front end. By welding with the pumping chamber 22 of the piston pump 20 which will be described later, or fixed by fixing means such as bolts, the cylinder 21 is installed to be in line with the mono pump 10.

On the other hand, the mortar supplied to the hopper 17 is introduced through the inlet port 16 by its own weight to the rotary shaft 12 located below the inlet port 17 of the monopump 10 and at the same time discharges the stator 15. The screw 12a is engaged in order to be transported straight to the passage 15a.

The piston 23 is a front end of the piston 23, the packing is in contact with the inner peripheral surface of the pumping chamber 22 is coupled, the discharge port 24 is formed on the upper surface of the pumping chamber 22, the discharge port 24 In order to prevent the discharged mortar flows backward is coupled to the connector (26) with a built-in weight ball (25) acting as a check valve.

Here, when the rotary shaft 12 of the monopump 10 is directly connected to the motor M, the rotational speed of the rotor 14 is much faster than the inflow speed of mortar introduced by its own weight, and thus the discharge passage of the stator 15 is too fast. Since the amount of mortar to be transferred through 15a is reduced, the rotor 14 must be rotated at an appropriate speed in order to be able to transfer as much mortar as possible to the pumping chamber 22 side. On the other hand, since the monopump 10 and the piston pump 20 operate at the same time, the maximum amount of mortar is pumped into the pumping chamber 22 in accordance with the pumping operation in which the piston 23 moves forward and backward to form a single stroke. It should be transported by the rotational speed of the rotor 14.

Thus, it is preferable to equip the monopump 10 with the speed reducer 30 in order to adjust the rotational speed of the rotor 14 to an appropriate speed.

To this end, the pulleys 31, 32 or sprockets are coupled to the shaft of the motor M and the input shaft 30a of the reducer 30 by connecting with a linking means such as a belt 33 or a chain and the reducer 30. The rotating shaft 12 may be connected to the output shaft of the.

Reference numeral 34 is a 'bearing housing', the inside of the rotating shaft 12 is supported so that it can be rotated smoothly by the bearing while the packing is mounted on the rotating shaft 12 to prevent leakage of mortar It is fixed to the casing 11 and the flange of the monopump 10.

Reference numeral 35 denotes a 'control box', which controls the operation of the monopump 10 by applying or blocking electric (or hydraulic pressure in the case of a hydraulic motor) to the motor M, and controls the operation of the piston pump 20. By operating a compressor (compressor) or the like for supplying hydraulic or pneumatic pressure to the cylinder 21 and controlling the opening / closing valve 36 of the supply line, the operation of the piston pump 20 can be controlled.

Reference numeral 37 is a 'hose' for sending the mortar discharged through the discharge port 24 to the working position, the reference numeral 38 is a piston pump (20) while holding the piston 23 does not shake in accordance with the pumping operation ) Is a 'bracket' to be installed between the cylinder 21 and the pumping chamber (22).

Here, the monopump 10 and the piston pump 20 may be operated to increase the discharge pressure, which is the object of the present invention, which is operated together, but only in a flat place where the discharge pressure does not have to be large depending on the situation of the work site. When the mortar is supplied, only the monopump 10 may be operated.

5 is an operation state diagram of the mortar pump of the first embodiment according to the present invention, the straight arrow shown in Figure 5 shows the direction in which the mortar is introduced through the inlet port 16, conveyed and discharged, the piston 23 Dotted arrows in both directions to indicate the forward and backward pumping operation of the piston (23).

Hereinafter, an operating state of the present invention configured as described above will be described with reference to FIG. 5.

First, in a state in which the mono pump 10 and the piston pump 20 are operated by operating the control box 35, when the cement mortar is supplied to the hopper 17, the mortar is directly rotated through the inlet 16. Flows into the site. At this time, the screw 12a coupled to the rotation shaft 12 is rotated by the driving of the motor M, and the spiral rotor 14 connected to the rotating shaft 12a and the joint 13 also rotates. Since it is rotating inside the stator 15, suction force is generated in the discharge passage 15a of the stator 15 due to the rotation of the rotor 14, and the mortar is transferred to the discharge port 18 side through the discharge passage 15a. .

Here, the piston pump 20 is also operating together with the monopump 10, and as the piston 23 performs the pumping operation, the internal pressure of the pumping chamber 22 is increased while the piston 23 moves forward, As a result, the weight ball 25 that is blocking the discharge port 24 is pushed upward, and the discharge port 24 is opened, and the mortar is continuously transferred to the pumping chamber 22 from the discharge port 18 side of the monopump 10. Is strongly discharged to the discharge port 24 is supplied to the working position through the hose (37).

That is, the piston pump is installed in order to increase the discharge pressure of the mono pump having a limit of the casing diameter due to the structure, and when the piston moves forward due to the operation of the piston pump, a strong pressure acts and the pressure is counted toward the mono pump side. There is a risk of going out, but the monopump is operated at all times, so that the piston moves backwards immediately after moving forward, so that there is no fear of damaging the monopump side by securing a space in the piston chamber between the heavy balls.
On the other hand, when the piston 23 moves backward, the internal pressure of the pumping chamber 22 is lowered and the discharge port 24 is blocked by the weight ball 25, so that the mortar after the discharge is not flowed back into the pumping chamber 22.

As such, the discharge pressure for transferring the mortar to the pumping chamber 22 by the rotation of the rotor 14 of the monopump 10 and the discharge pressure for the piston 23 pumping operation of the piston pump 20 face each other. Since the pumping chamber 22 has a strong pressure, a strong pressure is generated inside the pumping chamber 22, which causes the combined pressure of the discharge pressures of the mono pump 10 and the piston pump 20 to act on the discharge port 24 side. Thus, the discharge pressure of the mortar discharged through the discharge port 24 is very high.

6 and 7 are a plan view of the main part and a front view showing a mortar pump of a second embodiment of the present invention.

In the above-described first embodiment, the piston pump 20 is coupled to the mono pump 10 in a straight line. In this embodiment, the mortar supplied from the mono pump 10 is moved back and forth by the cylinder piston 23. According to the organically to provide the discharge pressure is characterized by.

That is, the cylindrical tubular pumping chamber 22 is positioned at the front end of the discharge part 18 of the monopump 10 in a horizontal orthogonal direction, and then the monopump 10 is coupled to the center of the body, and the longitudinal end is A mortar discharge port 24 is formed in the part, and the cylinder 21 having the piston 23 is coupled to the other end. In this case, the connecting pipe 50 is coupled to the upper surface of both ends of the pumping chamber 22 so as to communicate with each other, and one side of the connecting pipe 50 allows the mortar to be transferred from the cylinder 21 toward the discharge port 24 only. That is, the non-return check valve 51 is provided.

Accordingly, the piston 23 of the cylinder is always via the outlet 18 of the mono pump 10 when moving forward and backward.

8 is an operation diagram of the second embodiment of the present invention. When the position of the initial piston 23 is positioned below the end of the connecting pipe 50 coupled to the cylinder, the piston 23 moves to the monopump 10. The outlet 18 of the pumping chamber 22 is advanced to the lower end of the connection pipe 50 toward the discharge port 24 of the pumping chamber 22. At this time, since the monopump 10 continues to operate, mortar is continuously supplied, and only the mortar of the pre-supplied space is pushed out to the hose of the discharge port 24 to be discharged. At this time, the mortar pressure acts on the connection pipe 50. The check valve 51 for preventing the back flow provided in the connection pipe 50 is closed so that the working pressure is directed toward the discharge port 18 only. And by the monopump 10 mortar is continuously supplied to the rod side of the piston 23, that is, the rear side.

When the piston 23 moves backward in the next operation, the mortar of the rear side of the piston is pushed in the reverse direction. At this time, the check valve 51 for preventing the back flow is opened and the mortar is pushed into the space in front of the piston through the connecting pipe 50. When the piston 23 is advanced again, the? Valve is closed and the mortar of the pumping chamber 22 filled in the front of the piston is pushed to the discharge port and discharged.

As described above, according to the second embodiment of the present invention, the mortar may be continuously discharged by the continuous forward and backward operation of the cylinder piston 23 while the mortar of the monopump 10 is continuously forced to be supplied.

9 is to use the pressure of the general compressor as the pressure supply means in the pumping chamber as a third embodiment of the present invention.

To this end, a compressor 60 having a connecting body is coupled to an end opposite to the discharge port 24 of the pumping chamber 22, and in the pumping chamber between the pumping chamber and the compressor, in the pumping chamber during the non-operation of the compressor 60. A check valve 61 is provided so that mortar does not flow into a compressor side.

Accordingly, as in the second embodiment, when the pressure of the compressor is supplied into the pumping chamber, the mortar can be discharged more easily and with strong force.

Therefore, the mortar pump according to the present invention as described above, because the discharge pressure is very high, not only can transfer the mortar to the work position in the high place (high floor), but also can supply the mortar at a high speed, if necessary The spray gun is mounted on the end of the hose 37 to supply the mortar discharged can be easily used in the masonry or brick masonry while strongly spraying the cement mortar.

As described above with reference to the drawings illustrating a mortar pump according to the present invention, the present invention is not limited by the embodiments and drawings disclosed herein, but by those skilled in the art within the scope of the technical idea of the present invention Of course, various modifications may be made.

As described above, according to the mortar pump according to the present invention, since the discharge pressure for transferring the mortar to the pumping chamber by the rotation of the rotor of the mono pump and the discharge pressure due to the piston pumping operation of the piston pump face each other, A strong pressure is generated inside the pumping chamber, whereby the combined force of the discharge pressures of the mono pump and the piston pump acts on the discharge port side, thereby increasing the discharge pressure of the mortar discharged through the discharge port.

In addition, since the piston pump is installed facing the discharge port of the mono pump, mortar is continuously discharged through the discharge port by the rotor of the mono pump, and the pumping operation is continuously performed as the piston reciprocates forward and backward. Since the output of the earth can be maximized, mortar can be supplied to the work position in a short time to shorten the working time, thereby improving work efficiency.

Claims (5)

delete A stator 15 having a spiral rotor 14 connected to a rotary shaft 12 and a joint 13 rotated by the driving of the motor M, and a discharge passage 15a corresponding to the outer circumferential surface of the rotor is provided with a casing ( 11 is coupled to the inside, the upper end of the casing (11) and the mono pump (10) is provided with a hopper 17 in the inlet 16 through which the cement mortar flows; The piston 23 of the cylinder 21, which has a discharge port at one end and is connected to the discharge port 18, the front end of the monopump 10, in a horizontal orthogonal direction in the body longitudinal direction in a horizontal orthogonal direction, operates hydraulically or pneumatically. The pumping chamber 22 is provided with a pumping operation in the upper surface of the pumping chamber 22, the piston pump 20 is coupled to the coupling pipe 50 is provided with a check valve 51; Mortar pump. A stator 15 having a spiral rotor 14 connected to a rotary shaft 12 and a joint 13 rotated by the driving of the motor M, and a discharge passage 15a corresponding to the outer circumferential surface of the rotor is provided with a casing ( 11 is coupled to the inside, the upper end of the casing (11) and the mono pump (10) is provided with a hopper 17 in the inlet 16 through which the cement mortar flows; A pumping chamber 22 having a discharge port at one end thereof and having a central body side in the horizontal direction at the discharge port 18 side, which is a front end of the monopump 10, is provided in a horizontal orthogonal direction, and both ends of the pumping chamber 22 are provided. Mortar pump, characterized in that the coupling pipe 50 is provided with a check valve 51 is coupled to the upper surface, the compressor 60 having a check valve is coupled to the other end of the pumping chamber 22 is coupled to . According to claim 2 or 3, wherein the monopump 10 is equipped with a reducer 30 in order to reduce the rotational speed of the rotor 14, The shaft 12 of the motor 12 and the input shaft of the reducer 30 are coupled to the belt or chain 33 by a pulley or sprocket 31, 32 coupled to the output shaft of the reducer 30. Mortar pump characterized in that it comprises a connection. 4. The mortar pump according to claim 2 or 3, wherein a screw (12a) is coupled to a portion of the rotating shaft (12) located below the inlet (16) of the monopump (10).

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