A ground pump terminal automatic feeding and pouring device and its use method

Abstract

The present invention relates to the technical field of pouring devices, specifically to a ground pump terminal automatic feeding pouring device and a method for using the same, wherein the pouring device comprises a container, a three-way pipeline, a switching valve and a power assembly, wherein the container is suitable for containing concrete; the three-way pipeline has three cavities that are interconnected, wherein two are feed cavities and the other is a discharge cavity, the two feed cavities are connected to the container, and the discharge cavity is suitable for extending to a pouring position through a pouring pipeline; the switching valve is arranged at the connection position of the three cavities to achieve the connection between the discharge cavity and different feed cavities; the power assembly comprises a U-shaped cylinder body connected between the two feed cavities, a piston arranged in the middle section of the cylinder body, and a driving device for driving the piston to reciprocate, wherein the middle section of the cylinder body is arranged vertically opposite to the two feed cavities. The present invention realizes that the concrete does not directly contact the piston during the movement of the piston, and solves the problem of wear of the piston and the cylinder body caused by concrete impurities in the traditional design.

Description

Technical Field

[0001] The invention relates to the technical field of casting devices, and in particular to a ground pump terminal automatic feeding casting device and a use method thereof. Background Art

[0002] With the continuous acceleration of urbanization, the construction industry has increasingly higher requirements for construction efficiency and quality, especially in high-rise buildings and large infrastructure projects, where concrete pouring has become one of the key links that determine the progress and quality of the project. The traditional manual concrete pouring method has problems such as high labor intensity and low efficiency. Therefore, ground pump technology came into being. The ground pump aims to completely change the traditional concrete construction mode, improve the automation level of pouring operations, reduce labor costs, and improve construction efficiency and pouring quality.

[0003] At present, concrete floor pumps mainly use piston pumps. Concrete piston pumps are a type of equipment that uses a hydraulic system to drive the piston to reciprocate and deliver concrete mixtures in a continuous and efficient manner. They are widely used in construction. Its working principle involves the engine providing power, which generally drives the piston movement in two hydraulic cylinders. The backward movement of the piston creates negative pressure to suck in concrete, and the forward push, under the action of pressure, forces the concrete into the delivery pipeline through the S-shaped pipe and distribution valve system and delivers it to the pouring position. To ensure continuous output, the double-cylinder pump often uses a staggered working mode, with one cylinder sucking while the other cylinder pushes. However, when this double-cylinder floor pump is in use, the concrete sucked into the cylinder body will directly contact the two pistons, and the fine and hard sand particles in the concrete may invade the gap between the piston and the cylinder body, causing wear during the frequent reciprocating motion of the piston, which not only damages the sealing of the piston and the cylinder body, but also directly affects the efficiency and stability of concrete delivery. Therefore, how to reduce the wear between the piston and the cylinder body has become an important research direction for improving the overall performance of concrete floor pumps. Summary of the invention

[0004] The object of the present invention is to provide a ground pump terminal automatic feeding and pouring device and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0005] According to one aspect of the present invention, there is provided an automatic feeding and pouring device for a ground pump terminal, comprising a container, a three-way pipeline, a switching valve and a power assembly, wherein the container is suitable for containing concrete; the three-way pipeline has three cavities interconnected with each other, two of which are feed cavities and the other is a discharge cavity, the two feed cavities are connected to the container, and the discharge cavity is suitable for extending to a pouring position through a pouring pipeline; the switching valve is arranged at a connecting position of the three cavities to realize the connection between the discharge cavity and different feed cavities; the power assembly comprises a U-shaped cylinder body connected between the two feed cavities, a piston arranged in the middle section of the cylinder body and a driving device for driving the piston to reciprocate, and the middle section of the cylinder body is arranged vertically opposite to the two feed cavities.

[0006] Optionally, the driving device includes a reciprocating screw, a slider and a driving motor, the output shaft of the driving motor is connected to the reciprocating screw, the slider is threadedly matched with the thread groove of the reciprocating screw, and the slider is connected and fixed to the piston via a connecting bracket.

[0007] Optionally, the two feed cavities are arranged at the bottom of the container, and feed ports are arranged on the two feed cavities.

[0008] Optionally, the discharge cavity passes through the container and extends to the outside of the container, and one end of the discharge cavity located outside the container is provided with a flange connection portion suitable for connecting to the casting pipeline.

[0009] Optionally, a mounting port is provided at the connecting position of the two feed chambers, and the switching valve includes a valve plate, which is rotatably connected to the mounting port via a rotating shaft, and the valve plate has an internal end placed at the connecting position of the three chambers and an external end corresponding to the position of the feed port.

[0010] Optionally, the valve plate has a first closed position and a second closed position, and a transmission structure is provided between the rotating shaft and the slider, and the transmission structure is configured to drive the valve plate to rotate around the rotating shaft when the slider reciprocates along the reciprocating screw to switch the position of the valve plate.

[0011] Optionally, the valve plate also has an open position, which is located between the first closed position and the second closed position, and the transmission structure includes a first transmission member, a second transmission member and a torsion spring, wherein the first transmission member is fixed to the slider; the first end of the second transmission member is fixedly connected to the rotating shaft, and the second end of the second transmission member abuts against the first transmission member; the torsion spring is arranged between the container and the rotating shaft to elastically maintain the valve plate in the open position.

[0012] Optionally, a roller is provided at the second end of the second transmission member, and the second transmission member is in rolling contact with the first transmission member through the roller.

[0013] Optionally, the first transmission member has a pressing surface parallel to the reciprocating screw rod, and both ends of the pressing surface are rounded.

[0014] According to another aspect of the present invention, a method for using the above-mentioned ground pump terminal automatic feeding and pouring device is provided, and the steps are as follows:

[0015] S1: Make sure the inside of the container is clean, then add concrete mixture that meets the proportion requirements;

[0016] S2: After the power is turned on, the drive motor is started to drive the reciprocating screw to rotate, so that the slider moves back and forth in a straight line, and then the piston moves back and forth in the cylinder;

[0017] S3: During the reciprocating motion of the slider, the slider drives the valve plate to rotate around the rotating shaft through the transmission structure, so that the valve plate switches between the first closed position and the second closed position;

[0018] S4: Through the continuous reciprocating motion of the slider and the timely switching of the valve plate, a material circulation conveying system is formed;

[0019] S5: Driven by continuous circulation, concrete is pushed into the discharge cavity in the three-way pipe and transported to the designated pouring position at the construction site through the pouring pipeline.

[0020] Compared with the prior art, the present invention provides a ground pump terminal automatic feeding and pouring device and a method for using the same, which has the following beneficial effects:

[0021] 1. The present invention provides a U-shaped cylinder body and a piston at a high position in the middle section, so that during the movement of the piston, the concrete only flows in the feed cavity and avoids direct contact with the piston, thus solving the problem of piston and cylinder body wear caused by concrete impurities in the traditional design, thereby extending the service life of the piston and cylinder body. At the same time, combined with the coordinated work of the switching valve and the power component, a material circulation system is realized in which concrete is both extracted and transported during the unidirectional movement of the piston, thereby improving the transportation efficiency and operation speed of concrete;

[0022] 2. The present invention realizes the synchronization of the reciprocating motion of the slider and the automatic switching of the valve plate by setting a transmission structure including a first transmission member, a second transmission member and a torsion spring, solves the problem that the piston pump needs to switch the feed channel manually or with a complex mechanical structure during the continuous feeding process, and improves the automation level and reliability of the overall operation;

[0023] 3. The present invention realizes rolling contact with the first transmission member by arranging a roller at the second end of the second transmission member. This method reduces the friction and wear between the components, ensures that the valve plate can smoothly switch between the first closed position and the second closed position, solves the problem of loose closure of the feed port due to wear, and thus improves the stability of concrete transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axial side view of the present invention;

[0025] Figure 2 Another axial view of the present invention;

[0026] Figure 3 It is a schematic diagram of the main structure of the present invention;

[0027] Figure 4 It is an axial side view of a container not shown in the present invention;

[0028] Figure 5 For the present invention Figure 4 A is enlarged;

[0029] Figure 6 Another axial view of the container of the present invention is not shown;

[0030] Figure 7 For the present invention Figure 6 Schematic diagram of the cross-section structure;

[0031] Figure 8 It is a schematic diagram of the cross-sectional structure of the clothing of the present invention;

[0032] Fig. 9 It is a schematic diagram of the valve plate structure of the present invention.

[0033] In the figure: 1. container; 2. feed chamber; 3. discharge chamber; 4. cylinder body; 5. piston; 6. reciprocating screw; 7. slider; 8. drive motor; 9. connecting bracket; 10. feed port; 11. flange connection; 12. mounting port; 13. valve plate; 130. external end; 131. internal end; 14. first transmission member; 15. second transmission member; 16. rotating shaft; 17. torsion spring; 18. roller; 19. pressing surface; 20. fillet. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example: See Figures 1 to 9 According to one aspect of an embodiment of the present invention, there is provided a ground pump terminal automatic feeding and pouring device, which includes a container 1, a three-way pipeline, a switching valve and a power assembly, wherein the container 1 is suitable for containing concrete; the three-way pipeline has three cavities connected to each other, two of which are feed cavities 2 and the other is a discharge cavity 3, the two feed cavities 2 are connected to the container 1, and the discharge cavity 3 is suitable for extending to a pouring position through a pouring pipeline; the switching valve is arranged at a connecting position of the three cavities to realize the connection between the discharge cavity 3 and different feed cavities 2; the power assembly includes a U-shaped cylinder body 4 connected between the two feed cavities 2, a piston 5 arranged in the middle section of the cylinder body 4 and a driving device for driving the piston 5 to reciprocate, and the middle section of the cylinder body 4 is arranged vertically opposite to the two feed cavities 2. When implementing the ground pump terminal automatic feeding and pouring device, since the middle section of the cylinder body 4 is higher than the two feed chambers 2, it is only necessary to control the reciprocating stroke of the piston 5, and it is possible to prevent the concrete from entering the middle section of the cylinder body 4 and contacting the piston 5, thereby reducing the wear problem of the piston 5 and the cylinder body 4 caused by the intrusion of sand particles, and extending the service life of the piston 5 and the cylinder body 4. In addition, through the coordinated use of the power component and the switching valve, the piston 5 can simultaneously realize the extraction and delivery of concrete during unidirectional movement. Specifically, when the piston 5 moves toward one end of the cylinder body 4, the concrete in one of the feed chambers 2 will be pressed out, and at the same time, negative pressure will be formed in the other feed chamber 2 and the concrete will be sucked in, forming a continuous and efficient material cycle, thereby improving the delivery speed and operation efficiency of the concrete.

[0036] In this exemplary embodiment, the driving device includes a reciprocating screw 6, a slider 7 and a driving motor 8, the output shaft of the driving motor 8 is connected to the reciprocating screw 6, the slider 7 is threadedly matched with the thread groove of the reciprocating screw 6, and the slider 7 is connected and fixed to the piston 5 through a connecting bracket 9. In specific implementation, the driving motor 8 drives the reciprocating screw 6 to rotate, so that the slider 7 reciprocates on the reciprocating screw 6, and then drives the piston 5 to reciprocate in the cylinder 4. Of course, as long as the piston 5 can be driven to reciprocate in the cylinder 4, there is no particular restriction on the specific structural form of the driving device.

[0037] In this exemplary embodiment, two feed chambers 2 are arranged at the bottom of the container 1, and feed ports 10 are arranged on the two feed chambers 2. The feed ports 10 are used as a structure connecting the feed chambers 2 and the container 1, so that the concrete in the container 1 can smoothly enter the feed chamber 2 through the feed ports 10. The discharge chamber 3 penetrates the container 1 and extends to the outside of the container 1. The end of the discharge chamber 3 located outside the container 1 is provided with a flange connection 11 suitable for connecting to a pouring pipeline. The flange connection 11 can also be provided at one end of the pouring pipeline (not shown). The flange connection 11 of the pouring pipeline is connected and fixed to the flange connection 11 of the discharge chamber 3 by bolts and nuts. The other end of the pouring pipeline can be connected to a pouring hose (not shown) to better control the position and direction of concrete discharge.

[0038] In this exemplary embodiment, the connecting position of the two feed chambers 2 is provided with a mounting port 12, and the switching valve includes a valve plate 13, and the valve plate 13 is rotatably connected to the mounting port 12 via a rotating shaft 16, and the valve plate 13 has an internal end 131 placed at the connecting position of the three chambers and an external end 130 corresponding to the position of the feed port 10. Specifically, the valve plate 13 has a first closed position and a second closed position, and the valve plate 13 realizes switching between the first closed position and the second closed position by rotating around the rotating shaft 16, and the external end 130 of the valve plate 13 can close the feed port 10 of one of the feed chambers 2 when the valve plate 13 is in the first closed position, while at the same time, the internal end 131 of the valve plate 13 connects the feed chamber 2 having the feed port 10 with the discharge chamber 3; conversely, the external end 130 of the valve plate 13 can also close the other feed chamber when the valve plate 13 is in the second closed position. 2, and accordingly, the built-in end 131 of the valve plate 13 connects the feed chamber 2 having the other feed port 10 with the discharge chamber 3. In short, the position change of the valve plate 13 after rotation can selectively close the feed port 10 of any one of the feed chambers 2 while connecting the discharge chamber 3 with the closed feed port 10; a transmission structure is provided between the rotating shaft 16 and the slider 7, and the transmission structure is configured to drive the valve plate 13 to rotate around the rotating shaft 16 when the slider 7 reciprocates along the reciprocating screw rod 6, so as to switch the position of the valve plate 13. That is to say, while the slider 7 drives the piston 5 to make reciprocating motion, it also drives the valve plate 13 to rotate. It should be noted that the valve plate 13 does not continue to move with the continuous movement of the slider 7, but during the continuous reciprocating motion of the slider 7, each turn of the slider 7 will drive the valve to rotate once, and the valve will change the rotation direction as the slider 7 turns in different directions. Each rotation of the valve plate 13 will produce a change in the preset angle in an instant. This preset angle is the angle that the valve plate 13 rotates when it rotates from the first closed position to the second closed position. In addition, the valve plate 13 also has an open position, which is located between the first closed position and the second closed position. As long as the positions between the first closed position and the second closed position are all open positions, there are infinite open positions. Preferably, the distance between the open position and the first closed position and the second closed position is the same.

[0039] As a preferred embodiment, in this example, the transmission structure includes a first transmission member 14, a second transmission member 15 and a torsion spring 17, wherein the first transmission member 14 is fixed to the slider 7, and the fixing method includes welding, screwing, bonding, etc.; the first end of the second transmission member 15 is fixedly connected to the rotating shaft 16, and the second end of the second transmission member 15 abuts against the first transmission member 14, and the abutment includes sliding contact and rolling contact; the torsion spring 17 is arranged between the container 1 and the rotating shaft 16, and the torsion spring 17 elastically maintains the valve plate 13 in the open position. In specific implementation, when the slider 7 moves along the reciprocating screw 6, the second transmission member 15 will be deflected by a certain angle in the movement direction of the slider 7 under the squeezing of the first transmission member 14. At this deflection angle, the external end 130 of the valve plate 13 will cover the feed port 10 of one of the feed chambers 2, and at the same time, the feed chamber 2 is connected with the discharge chamber by the internal end 131 of the valve plate 13. When the slider 7 is about to reach the limit position of the reciprocating screw 6 in this direction (that is, the position where the slider 7 can turn around), the second transmission member 15 will disengage from the first transmission member 14. At this time, the valve plate 13 will rotate to the open position under the rebound force of the torsion spring 17. When the slider 7 turns around, the second transmission member 15 and the valve plate 13 will be deflected in the direction of the slider 7 turning around under the squeezing and pushing action of the first transmission member 14. This process is repeated, so that the slider 7 can drive the piston 5 to reciprocate while driving the valve plate 13 to switch between the first closed position and the second closed position.

[0040] In this exemplary embodiment, a roller 18 is provided at the second end of the second transmission member 15, and the second transmission member 15 is in rolling contact with the first transmission member 14 through the roller 18. The provision of the roller 18 reduces the wear of the first transmission member 14 and the second transmission member 15 during the relative movement, thereby ensuring that the valve plate 13 can be switched to the first closed position or the second closed position, so as to avoid the phenomenon that the feed port 10 is not closed tightly.

[0041] In this exemplary embodiment, the first transmission member 14 has a contact surface 19 parallel to the reciprocating screw rod 6, and both ends of the contact surface 19 are provided with rounded corners 20. The design of the rounded corners 20 enables the second transmission member 15 to smoothly transition to the contact surface 19 of the first transmission member 14 after breaking away from the first transmission member 14, and to contact the first transmission member 14 again.

[0042] According to another aspect of an embodiment of the present invention, a method for using the above-mentioned ground pump terminal automatic feeding and pouring device is provided, and the steps are as follows:

[0043] S1: Ensure that the interior of container 1 is clean, and then add concrete mixture that meets the proportion requirements;

[0044] S2: After the power is turned on, the driving motor 8 is started to drive the reciprocating screw 6 to rotate, so that the slider 7 performs reciprocating linear motion, and then the piston 5 performs reciprocating motion in the cylinder 4;

[0045] S3: During the reciprocating motion of the slider 7, the slider 7 drives the valve plate 13 to rotate around the rotating shaft 16 through the transmission structure, so that the valve plate 13 switches between the first closed position and the second closed position;

[0046] S4: Through the continuous reciprocating motion of the slider 7 and the timely switching of the position of the valve plate 13, a material circulation conveying system is formed;

[0047] S5: Driven by the continuous cycle, the concrete is pushed into the discharge cavity 3 in the three-way pipe and transported to the designated pouring position at the construction site through the pouring pipe.

[0048] Working principle: First, connect the drive motor 8 to the power supply and start it. The reciprocating screw 6 is driven to rotate by the output shaft of the drive motor 8, so that the slider 7 that is threaded with the reciprocating screw 6 makes a reciprocating linear motion. The slider 7 is connected to the piston 5 through the connecting bracket 9, so the piston 5 also reciprocates in the cylinder body 4. Since the middle section of the cylinder body 4 is higher than the feed chamber 2 on both sides, it is ensured that the concrete only flows inside the feed chamber 2, avoiding direct contact between the piston 5 and the concrete. During the reciprocating motion of the slider 7 along the reciprocating screw 6, the slider 7 drives the valve plate 13 to rotate around the rotating shaft 16 through the transmission structure, so that the valve plate 13 switches between the first closed position and the second closed position. This process forms a material circulation and conveying system through the continuous reciprocating motion of the slider 7 and the timely switching of the valve plate 13, ensuring that the concrete is continuously extracted from the container 1 through a feed chamber 2, passes through the discharge chamber 3, and is then conveyed to the designated pouring point through the pouring pipeline.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ground pump terminal automatic feeding and pouring device, It is characterized in that include: A container (1) suitable for containing concrete; A three-way pipeline having three cavities interconnected with each other, two of which are feed cavities (2) and one is a discharge cavity (3), the two feed cavities (2) are connected to the container (1), and the discharge cavity (3) is suitable for extending to a casting position through a casting pipeline; A switching valve is arranged at the communication position of the three chambers to realize the communication between the discharge chamber (3) and different feed chambers (2); as well as The power assembly comprises a U-shaped cylinder body (4) connected between the two feed chambers (2), a piston (5) arranged in the middle section of the cylinder body (4), and a driving device for driving the piston (5) to reciprocate, wherein the middle section of the cylinder body (4) and the two feed chambers (2) are arranged opposite to each other in the vertical direction.

2. A ground pump terminal automatic feeding and pouring device according to claim 1, Features: The driving device comprises a reciprocating screw (6), a slider (7) and a driving motor (8); the output shaft of the driving motor (8) is connected to the reciprocating screw (6); the slider (7) is threadedly matched with the thread groove of the reciprocating screw (6); and the slider (7) is connected and fixed to the piston (5) via a connecting bracket (9).

3. A ground pump terminal automatic feeding and pouring device according to claim 2, Features: The two feed chambers (2) are arranged at the bottom of the container (1), and feed ports (10) are arranged on the two feed chambers (2).

4. A ground pump terminal automatic feeding and pouring device according to claim 3, Features: The discharge cavity (3) passes through the container (1) and extends to the outside of the container (1); one end of the discharge cavity (3) located outside the container (1) is provided with a flange connection portion (11) suitable for connecting to the casting pipeline.

5. A ground pump terminal automatic feeding and pouring device according to claim 3 or 4, Features: The connecting position of the two feed chambers (2) is provided with a mounting port (12), the switching valve comprises a valve plate (13), the valve plate (13) is rotatably connected to the mounting port (12) via a rotating shaft (16), and the valve plate (13) has an internal end (131) disposed at the connecting position of the three chambers and an external end (130) corresponding to the position of the feed port (10).

6. A ground pump terminal automatic feeding and pouring device according to claim 5, Features: The valve plate (13) has a first closed position and a second closed position, and a transmission structure is provided between the rotating shaft (16) and the slider (7), and the transmission structure is configured to drive the valve plate (13) to rotate around the rotating shaft (16) when the slider (7) reciprocates along the reciprocating screw rod (6), so as to switch the position of the valve plate (13).

7. A ground pump terminal automatic feeding and pouring device according to claim 6, Features: The valve plate (13) also has an open position, the open position being located between the first closed position and the second closed position, and the transmission structure comprises: A first transmission member (14) fixed to the slider (7); A second transmission member (15), a first end of which is fixedly connected to the rotating shaft (16), and a second end of which is in abutment with the first transmission member (14); and A torsion spring (17) is provided between the container (1) and the rotating shaft (16) so as to elastically maintain the valve plate (13) in the open position.

8. The ground pump terminal automatic feeding and pouring device according to claim 7, Features: A roller (18) is provided at the second end of the second transmission member (15), and the second transmission member (15) is in rolling contact with the first transmission member (14) via the roller (18).

9. A ground pump terminal automatic feeding and pouring device according to claim 7 or 8, Features: The first transmission component (14) has a pressing surface (19) parallel to the reciprocating screw rod (6), and both ends of the pressing surface (19) are arranged with rounded corners (20).

10. A method for using the ground pump terminal automatic feeding and pouring device according to any one of claims 1 to 9, the steps of which are as follows: S1: Ensure that the interior of the container (1) is clean, and then add concrete mixture that meets the proportion requirements; S2: After the power is turned on, the driving motor (8) is started to drive the reciprocating screw (6) to rotate, so that the slider (7) performs reciprocating linear motion, and then the piston (5) performs reciprocating motion in the cylinder (4); S3: During the reciprocating motion of the slider (7), the slider (7) drives the valve plate (13) to rotate around the rotation axis (16) through the transmission structure, so that the valve plate (13) switches between the first closed position and the second closed position; S4: Through the continuous reciprocating motion of the slider (7) and the timely switching of the position of the valve plate (13), a material circulation conveying system is formed; S5: Driven by the continuous cycle, the concrete is pushed into the discharge chamber (3) in the three-way pipe and transported to the designated pouring position at the construction site through the pouring pipe.

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