Distributing valve for concrete pump and the concrete pump

摘要

A distributing valve for a concrete pump and the concrete pump are provided, the distributing valve comprises a valve body (200) and a valve core (300), and a delivering cavity (213) is internally formed in the valve body (200) and is provided with a material inlet, a material outlet (212) and material suction openings (251,252). The material outlet (212) is communicated with a delivery pipe and the material suction opening (251,252) is communicated with a delivery cylinder (500). The valve core (300) is a L-shaped pipe formed by a first pipe section (310) and a second pipe section (320), and one end of the L-shaped pipe is connected with a hopper (600) and a revolution fitting surface is formed between the end face of the other end of the L-shaped pipe and the internal face of the valve body (200).

主权项

1. A concrete pump, including a hopper (600), a delivery cylinder (500), a delivery pipe and a driving mechanism (400), characterized in that, it further includes a distributing valve for the concrete pump, the distributing valve comprising a valve body (200) and a valve core (300), and a delivery cavity (213) internally formed in the valve body (200);
wherein the valve body (200) is provided with a material outlet (212), a material inlet and a first material suction opening (251); wherein the material outlet (212) is communicated with the delivery pipe and the first material suction opening (251) is communicated with the delivery cylinder; wherein the valve core (300) is a pipe structure formed by a first pipe section (310) and a second pipe section (320) in the delivery cavity; wherein the delivery cavity (213) has an inner wall surfacei wherein the first pipe section (310) extends vertically, and is rotatably fitted with the material wherein the second pipe section (320) extends horizontally in the delivery cavity and has an inner end which is connected to a lower end of the first pipe section (310) and an outer end, and a revolution fitting surface is formed between an end face of the outer end of the second pipe section and the inner wall surface of the delivery cavity (213); wherein a fitting between the first (310) and second (320) pipe sections and the valve body (200) is a seal fitting: wherein the valve core (300) is driven by the driving mechanism (400) to be switched between a first position where the outer end of the second pipe section (320) is in communication with the first material suction opening (251) and a second position where the first material suction opening (251) is in communication with the material outlet (1212) via the delivery cavity (213); wherein the central line of the first pipe section (310) is perpendicular to the axis of the delivery cylinder (500); and wherein the distributing valve for the concrete pump includes a driving shaft (510) having an inner end and an outer end, the central line of which coincides with that of the first pipe section (310), the inner end of the driving shaft is fixed to the lower end of the first pipe section (310), and the outer end of the driving shaft protrudes from the valve body (200) and is connected with the driving mechanism (400).