Low-pressure conveying device

Abstract

The utility model relates to the technical field of concrete conveying, in particular to a low-pressure conveying device. According to the technical scheme, the device comprises an end cover and a cylinder body, a rotating cylinder is inserted into the cylinder body in a rotating mode, material storage grooves are distributed in the outer side of the rotating cylinder in an annular array mode, a pipe hole is formed in the middle of the front end face of the cylinder body, an insertion pipe is inserted into the pipe hole, and a discharging opening is formed in one side of the lower end of the cylinder body; a connecting pipe is installed at the upper end of the barrel in a penetrating mode and corresponds to the material storage groove, the outer end of the connecting pipe is connected with a material taking pipe, the end cover is fixed to an opening of the front end face of the barrel through a bolt, an inserting opening is formed in the center of the end cover, and a sealing filler strip is arranged on the outer side of the rotating barrel and attached to the inner wall of the barrel. And the sealing gasket strip is matched with the discharge port and the storage groove. The negative pressure type conveying device has the advantages of being used for negative pressure type conveying for high-altitude feeding, convenient to operate, high in equipment operation safety, convenient to disassemble and maintain and simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete transportation, in particular to a low-pressure transportation device. Background Art

[0002] Concrete is a general term for engineering composite materials composed of aggregates bonded together by a cementitious material. Concrete, commonly referred to as cement as the binder, sand and stone as aggregates, is mixed with water in a specific proportion and then mixed. This cement concrete, also known as ordinary concrete, is widely used in civil engineering.

[0003] Concrete is generally transported by high-pressure extrusion and discharging through a concrete pump. This method of transporting concrete is inconvenient when transporting concrete to high places and is not convenient for loading and transporting equipment. In addition, the existing integral concrete transport mechanism is not easy to maintain. Utility Model Content

[0004] The purpose of the utility model is to provide a low-pressure conveying device with the advantages of negative pressure high-altitude loading, easy operation, high equipment operation safety, convenient disassembly and maintenance, and simple structure, so as to solve the problems in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-pressure conveying device, comprising an end cover and a cylinder, a rotating cylinder is inserted and rotatably installed inside the cylinder, and a material storage groove is distributed in a circular array on the outside of the rotating cylinder. A pipe hole is provided in the middle of the front end face of the cylinder, and a cannula is inserted into the pipe hole. A discharge port is provided on one side of the lower end of the cylinder, a connecting pipe is installed through the upper end of the cylinder, and the connecting pipe corresponds to the material storage groove, and the outer end of the connecting pipe is connected to a material taking pipe, the end cover is fixed to the front end face opening of the cylinder by bolts, and a socket is provided in the center of the end cover.

[0006] When using a low-pressure conveying device in the present technical solution, the negative pressure pump is started to extract the air inside the storage tank on the upper side of the rotating drum. After the air enters through the top hole of the air groove, it flows into the intubation tube through the rear slot, and then is introduced into the negative pressure pump through the intubation tube to be discharged outward. Negative pressure adsorption is formed in the upper storage tank, and the outer end of the material taking pipe is placed in the concrete pool. After the concrete is sucked in, it is injected into the storage tank on the upper side through the connecting pipe. After the feeding is completed, the rear motor of the cylinder is started, and the motor output shaft drives the rotating drum to rotate. After the rotating drum rotates 120 degrees, the storage tank containing concrete corresponds to the discharge port, so that the concrete is discharged outward. During the discharging process, after the other storage tank is rotated, the storage tank corresponds to the connecting pipe, and the lower end of the air groove corresponds to the air passage on the upper side of the intubation tube. Then the above-mentioned feeding operation can be repeated during discharging. During maintenance, the end cover can be separated by removing the bolts, and the rotating drum with internal rotation can be pulled out for easy maintenance.

[0007] Preferably, a sealing strip is provided on the outer side of the drum, and the sealing strip fits the inner wall of the drum body, and the sealing strip fits the discharge port and the storage tank. The sealing strip realizes a sealed connection between the drum and the drum body, so that a relatively closed space is formed in the storage tank.

[0008] Preferably, an air passage is provided on the upper side of the cannula, and the cannula is adapted to the tube hole and the socket. The air passage of the cannula is provided on the upper side, and after the rotating drum rotates, the air passage of the cannula can be docked with different air grooves.

[0009] Preferably, the rotary drum is provided with an annular array of air vents on the rear side, wherein the upper ends of the air vents are connected to the inner top of the material storage tank, and the lower ends of the air vents are connected to the pipe holes, and the air vents correspond to the air vents on the upper side of the cannula. The upper side of the cannula is connected to the corresponding material storage tank through the air vents through the air vents.

[0010] Preferably, a ring groove is formed on the front end surface of the drum, and a stabilizing ring is fixed to the rear end surface of the end cover, and the stabilizing ring is inserted into the ring groove. The ring groove and the stabilizing ring are connected to support and limit the front end of the drum, ensuring its rotational stability.

[0011] Preferably, a negative pressure pump is provided at the outer opening of the socket, and the negative pressure pump is fixed to the end cover via a support leg. The negative pressure pump is installed on the outer side of the end cover to reduce the space used and facilitate the overall installation of the device.

[0012] Preferably, the outer end of the cannula is connected to a negative pressure pump after passing through the socket, so as to discharge the gas in the cannula passage outwards through the negative pressure pump.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the operator starts the device through an external control device when an external power supply is connected, and starts the negative pressure pump to extract the air inside the storage tank on the upper side of the rotating drum. After the air enters through the top hole of the air groove, it flows into the insert pipe through the rear notch, and is then introduced into the negative pressure pump through the insert pipe to be discharged outwards. Negative pressure adsorption is formed in the upper storage tank, and the outer end of the material taking pipe is placed in the concrete pool. After the concrete is sucked in, it is injected into the storage tank on the upper side through the connecting pipe. After the feeding is completed, the motor at the rear of the drum is started, and the motor output shaft drives the rotating drum to rotate. After the rotating drum rotates 120 degrees, there is negative pressure. The concrete storage trough corresponds to the discharge port, so that the concrete is discharged outward. During the discharge process, the other storage trough is rotated, so that the storage trough corresponds to the connecting pipe, and the lower end of the air trough corresponds to the air passage on the upper side of the insert pipe. Then the above-mentioned feeding operation can be repeated during discharge. During maintenance, the end cover can be separated by removing the bolts, and the rotating drum with internal rotation and plug-in can be pulled outward for easy maintenance. The device has a simple structure and is easy to operate. The negative pressure feeding and conveying structural design facilitates the feeding and conveying of concrete at high places. The equipment has high operating safety and is easy to operate. At the same time, the structural design that is easy to disassemble facilitates later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the expanded structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the front view structure of the rotating drum of the utility model;

[0017] Figure 4 This is a schematic diagram of the end cover structure of the utility model;

[0018] Figure 5 This is a rear view structural diagram of the rotary drum of the present invention.

[0019] In the figure: 1. Feeding pipe; 2. End cover; 3. Negative pressure pump; 4. Bolt; 5. Discharge port; 6. Cylinder; 7. Connecting pipe; 8. Insert pipe; 9. Rotating drum; 10. Ring groove; 11. Pipe hole; 12. Air groove; 13. Storage trough; 14. Stabilizing ring; 15. Socket. DETAILED DESCRIPTION

[0020] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0021] Example 1

[0022] See also Figures 1 to 5 The utility model provides an embodiment: a low-pressure conveying device, including an end cover 2 and a cylinder 6, a rotating drum 9 is inserted and rotatably installed inside the cylinder 6, and a material storage groove 13 is distributed in a circular array on the outside of the rotating drum 9. A pipe hole 11 is opened in the middle of the front end surface of the cylinder 6, and a cannula 8 is inserted into the pipe hole 11. A discharge port 5 is opened on one side of the lower end of the cylinder 6.

[0023] Further,

[0024] A sealing gasket is provided on the outside of the rotating drum 9, and the sealing gasket is in contact with the inner wall of the cylinder 6. The sealing gasket is adapted to the discharge port 5 and the storage trough 13. The sealing gasket realizes a sealed connection between the rotating drum 9 and the cylinder 6, so that a relatively closed space is formed in the storage trough 13.

[0025] Further,

[0026] An air passage is provided on the upper side of the cannula 8, which is adapted to the tube hole 11 and the socket 15. The air passage of the cannula 8 is provided on the upper side. After the rotating drum 9 rotates, the air passages of the cannula 8 can be connected with different air grooves 12.

[0027] Further,

[0028] The rear annular array of the rotating drum 9 is provided with an air groove 12, and the upper end of the air groove 12 is connected to the inner top of the material storage tank 13, and the lower end of the air groove 12 is connected to the pipe hole 11, and the air groove 12 corresponds to the air passage on the upper side of the cannula 8, and the upper side of the cannula 8 is connected through the air groove 12 and the corresponding material storage tank 13.

[0029] Example 2

[0030] See also Figures 1 to 5 The utility model provides an embodiment: a low-pressure conveying device, including an end cover 2 and a cylinder 6, a connecting pipe 7 is installed through the upper end of the cylinder 6, and the connecting pipe 7 corresponds to the material storage trough 13, the outer end of the connecting pipe 7 is connected to the material taking pipe 1, the end cover 2 is fixed to the front end surface opening of the cylinder 6 by bolts 4, and a socket 15 is opened at the center of the end cover 2.

[0031] Further,

[0032] The front end surface of the rotating drum 9 is provided with an annular groove 10, and the rear end surface of the end cover 2 is fixed with a stabilizing ring 14, which is inserted into the annular groove 10. The annular groove 10 and the stabilizing ring 14 are connected to support and limit the front end of the rotating drum 9 to ensure its rotational stability.

[0033] Further,

[0034] A negative pressure pump 3 is provided at the outer opening of the socket 15, and the negative pressure pump 3 is fixed to the end cover 2 through supporting legs. The negative pressure pump 3 is installed on the outer side of the end cover 2 to reduce the use of space and facilitate the overall installation of the device.

[0035] Further,

[0036] The outer end of the cannula 8 passes through the socket 15 and is connected to the negative pressure pump 3, so that the gas in the channel of the cannula 8 is discharged to the outside through the negative pressure pump 3.

[0037] During the operation of the present invention, an external power supply is connected, and the operator starts the device through an external control device, and starts the negative pressure pump 3 to extract the air inside the material storage tank 13 on the upper side of the rotating drum 9. After the air enters through the top hole of the air groove 12, it flows into the cannula 8 through the rear notch, and then is introduced into the negative pressure pump 3 through the cannula 8 to be discharged outward, forming negative pressure adsorption in the upper material storage tank 13. The outer end of the material taking pipe 1 is placed in the concrete pool, and after the concrete is sucked in, it is injected into the material storage tank 13 on the upper side through the connecting pipe 7. After the feeding is completed, the device is started. The motor is installed at the rear of the cylinder 6, and the motor output shaft drives the rotating drum 9 to rotate. After the rotating drum 9 rotates 120 degrees, the storage trough 13 containing concrete corresponds to the discharge port 5, so that the concrete is discharged outward. During the discharging process, the other storage trough 13 is rotated, and the storage trough 13 corresponds to the connecting pipe 7, and the lower end of the air groove 12 corresponds to the air passage on the upper side of the insert pipe 8. Then, the above-mentioned loading operation can be repeated during discharging. During maintenance, the bolt 4 can be removed to separate the end cover 2, and the rotating drum 9 that is internally rotated and plugged can be pulled outward for easy maintenance.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-pressure conveying device, comprising an end cover (2) and a cylinder (6), characterized in that: A rotating drum (9) is inserted and rotatably installed inside the cylinder (6), and a material storage groove (13) is distributed in a circular array on the outer side of the rotating drum (9). A pipe hole (11) is opened in the middle of the front end surface of the cylinder (6), and a plug (8) is inserted into the pipe hole (11). A discharge port (5) is opened on one side of the lower end of the cylinder (6). A connecting pipe (7) is installed through the upper end of the cylinder (6), and the connecting pipe (7) corresponds to the material storage groove (13). The outer end of the connecting pipe (7) is connected to the material taking pipe (1). The end cover (2) is fixed to the opening of the front end surface of the cylinder (6) by bolts (4), and a socket (15) is opened at the center of the end cover (2).

2. A low-pressure conveying device according to claim 1, characterized in that: The outer side of the rotating drum (9) is provided with a sealing strip, and the sealing strip is in contact with the inner wall of the drum body (6), and the sealing strip is adapted to the discharge port (5) and the storage trough (13).

3. A low-pressure conveying device according to claim 1, characterized in that: An air passage is provided on the upper side of the cannula (8), and the cannula (8) is adapted to the tube hole (11) and the socket (15).

4. A low-pressure conveying device according to claim 3, characterized in that: The rear annular array of the rotating drum (9) is provided with an air-escape groove (12), and the upper end of the air-escape groove (12) is connected to the inner top end of the material storage tank (13), and the lower end of the air-escape groove (12) is connected to the pipe hole (11), and the air-escape groove (12) corresponds to the air-escape channel on the upper side of the cannula (8).

5. The low-pressure conveying device according to claim 1, characterized in that: The front end surface of the rotating drum (9) is provided with an annular groove (10), and the rear end surface of the end cover (2) is fixed with a stabilizing ring (14), which is inserted into the annular groove (10).

6. A low-pressure conveying device according to claim 1, characterized in that: A negative pressure pump (3) is provided at the outer opening of the socket (15), and the negative pressure pump (3) is fixed to the end cover (2) via supporting legs.

7. A low-pressure conveying device according to claim 6, characterized in that: The outer end of the cannula (8) passes through the socket (15) and is connected to the negative pressure pump (3).

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