Valve for concrete pump truck

Abstract

The utility model relates to a valve for a concrete pump truck, which comprises a vertically arranged discharge pipe, the upper end of the discharge pipe is provided with a connector, two sides of the connector are transversely connected with lug plates with through holes, the connector is connected with a pumping hose through the lug plates matched with bolts and nuts, the lower end pipe body of the discharge pipe is provided with a receding opening along the circumferential direction, and the lower end of the discharge pipe is provided with a through hole. A valve plate capable of rotating in the avoiding opening and controlling opening and closing of the discharging pipe is rotationally mounted above and below the avoiding opening outside the pipe body through a support and a rotating shaft, and an operating handle is connected to the valve plate. The device is simple in structure, convenient to maintain, small in working stroke, short in opening and closing time, convenient to assemble and disassemble, and remarkable in economic benefit and social benefit.

Description

Technical Field

[0001] The utility model relates to the technical field of urban municipal engineering construction, in particular to a valve used in a concrete pump truck. Background Art

[0002] In the process of urban construction and development, with the rapid development of the national economy and the continuous acceleration of urbanization, the construction of large-scale civil and public buildings, bridges, subways and large-scale water conservancy projects has developed rapidly. The concrete structures of these projects are pumped by concrete pump trucks. Concrete pump trucks can be seen everywhere on highways, construction sites and surrounding roads.

[0003] Concrete pump trucks can complete the on-site concrete delivery and distribution operations at the same time, and have the characteristics of good pumping performance, large distribution range, self-propelled movement, flexibility and convenient transfer. However, during the movement of the pump pipe, the remaining concrete in the pipe may spill at any time, causing road pollution and structural appearance defects. In terms of safety, it may fall from high altitude and injure pedestrians and vehicles, causing property losses. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a valve for a concrete pump truck, in which a valve device that can be closed at any time is installed at the very end of the pump pipe to prevent the concrete remaining in the pump pipe from spilling, thereby greatly ensuring the safety of on-site workers and mechanical vehicles, reducing the waste of construction materials, and avoiding the impact of concrete spilling on the pouring quality, while improving construction efficiency.

[0005] The utility model is realized through the following technical solutions:

[0006] Provided is a valve for a concrete pump truck, comprising a discharge pipe arranged vertically, a connector arranged at the upper end of the discharge pipe, ear plates with through holes arranged on both sides of the connector being laterally connected, and connected to a pumping hose through the ear plates in cooperation with bolts and nuts, an escape opening being arranged on a pipe body at the lower end of the discharge pipe in a circumferential direction, and a valve plate which can rotate in the escape opening and can control the opening and closing of the discharge pipe is rotatably installed above and below the escape opening by a support and a rotating shaft outside the pipe body, and an operating handle is connected to the valve plate.

[0007] Furthermore, the connector includes an annular block which is sleeved and fixed on the upper end of the discharge pipe, and the upper surface and the lower surface of the annular block are processed with symmetrical conical inclined surfaces.

[0008] By setting conical slopes on the upper and lower parts of the annular block, after the conical slopes touch the steel bars, the guiding of the slopes can reduce the resistance of the connector after contacting the steel bars, and enable it to pass through the steel bars smoothly to complete the installation. The conical slopes set up above and below can guide the steel bars or cables, making it convenient for the installation of the discharge pipe.

[0009] Furthermore, the discharge pipe is connected with lifting handles on both sides below the connecting head.

[0010] The lifting handle is provided to facilitate manual holding of the discharge pipe and the pumping hose for connection, installation, disassembly and replacement.

[0011] Beneficial effects of the utility model:

[0012] The utility model is installed vertically at the end of the pumping hose through the ear plate and the bolt nut. It has a simple structure and is easy to maintain. The manual grip of the operating handle can drive the valve plate to rotate in the avoidance port to realize the switch operation of the discharge pipe, which is convenient for controlling the concrete discharge. The valve plate has a small working stroke, a short opening and closing time, a suitable gap between the valve plate and the avoidance port, good sealing, small friction between the sealing surfaces, a long service life, and is firm and durable. The overall operation steps are simple, the operability is strong, the installation and disassembly are convenient, the cost is low, and the economic and social benefits are significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a rear view of the utility model.

[0015] As shown in the figure:

[0016] 1. Discharge pipe, 2. Connecting head, 3. Ring block, 4. Conical slope, 5. Ear plate, 6. Lifting handle, 7. Avoidance port, 8. Valve plate, 9. Operating handle. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0018] like Figure 1 and Figure 2 As shown, a valve for a concrete pump truck includes a vertically arranged discharge pipe 1, a connector 2 is arranged at the upper end of the discharge pipe 1, and lifting handles 6 are connected to the discharge pipe 1 on both sides below the connector 2, for manually holding the lifting handles 6 to connect and disassemble the discharge pipe.

[0019] The connector 2 includes an annular block 3 sleeved and fixed on the upper end of the discharge pipe 1, and the upper and lower surfaces of the annular block 3 are processed with symmetrical conical inclined surfaces 4. The connector 2 is laterally connected with ear plates 5 with through holes on both sides of the annular block 3, and is connected to the pumping hose through the ear plates 5 in conjunction with bolts and nuts. The end of the pumping hose of the pump truck has a connection standard part, which can be connected to the ear plate 5 of the connector 2 through bolts and nuts. The lower end of the discharge pipe 1 is provided with an avoidance opening 7 along the circumferential direction, and the valve plate 8 that can rotate in the avoidance opening 7 and control the opening and closing of the discharge pipe 1 is rotatably installed outside the avoidance opening 7 through a support and a rotating shaft, and the valve plate 8 is connected to the valve plate 8 with an operating handle 9.

[0020] In this embodiment, the discharge pipe 1 and the valve plate 8 are both made of aluminum alloy and are integrally cast and die-cast. The main body is 1800 mm high, the inner diameter is 125 mm, and the outer diameter is 135 mm. The valve plate 8 has a diameter of 128 mm and is cast from a whole piece of aluminum alloy. It is rotatably installed between the upper and lower supports of the avoidance port 7 through a rotating shaft, and can be rotated in the avoidance port 7 to realize the switching operation of the discharge pipe 1.

[0021] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A valve for a concrete pump truck, characterized in that: It includes a vertically arranged discharge pipe, a connecting head is arranged at the upper end of the discharge pipe, ear plates with through holes are horizontally connected to both sides of the connecting head, and the ear plates are matched with bolts and nuts to be connected to the pumping hose, an avoidance opening is circumferentially opened on the tube body at the lower end of the discharge pipe, and a valve plate that can rotate in the avoidance opening and can control the opening and closing of the discharge pipe is rotatably installed above and below the avoidance opening by a support and a rotating shaft outside the tube body, and an operating handle is connected to the valve plate.

2. The valve for a concrete pump truck according to claim 1, characterized in that: The connector comprises an annular block which is sleeved and fixed on the upper end of the discharge pipe, and the upper surface and the lower surface of the annular block are processed with symmetrical conical inclined surfaces.

3. The valve for a concrete pump truck according to claim 1, characterized in that: The discharge pipe is connected with lifting handles on both sides below the connection head.

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