Pumping machinery and its pumping system

Abstract

The invention discloses a pumping system and a pumping machine; the pumping system includes a driving device, a delivery cylinder, a push rod and a piston, the push rod is provided with a lubricating channel, and the piston is provided with a lubricating port; The push rod is covered with a lubricating collar that can rotate relatively; the lubricating collar is provided with a supply channel that matches the inlet end of the lubricating channel, and the lubricating collar can expand and contract with the push rod sports. The pumping system proposed by the present invention is provided with a lubricating collar, and the lubricating medium can enter the lubricating channel from the supply channel of the lubricating collar, and the lubricating collar can not only move telescopically with the push rod, but also rotate relative to the push rod; when the push rod When rotation occurs during operation, the lubricating collar does not rotate with the push rod, so that the lubricating hose connected to the lubricating collar will not rotate with the push rod, thereby preventing the lubricating hose from being wrapped around the push rod, thereby avoiding There is a phenomenon that the lubrication is not smooth due to the hose being wrapped around the push rod.

Description

technical field [0001] The present invention relates to engineering machinery, in particular to a pumping system; in addition, it also relates to a pumping machine with the pumping system. Background technique [0002] At present, pumping machinery (such as pump trucks, vehicle-mounted pumps, mortar pumps, etc.) for pumping materials has been widely used in engineering construction. Among these pumping machines, the pumping system is one of their core components. Such as figure 1 As shown, the pumping system generally includes a driving device 4, a push rod 3, a delivery cylinder 1 and a piston 2; the piston 2 is slidably arranged in the delivery cylinder 1, one end of the push rod 3 is connected to the driving device 4, and the other end is connected to the piston 2 connection; the working process of the pumping system is: the driving device 4 drives the push rod 3 to do telescopic movement, when the push rod 3 drives the piston 2 to retract, the delivery cylinder 1 sucks...

AI Technical Summary

Problems solved by technology

[0003] In order to prevent dry friction between the piston 2 and the inner wall of the delivery cylinder 1, a lubrication point is usually set at a specific position of the delivery cylinder 1. When the piston 2 moves to the lubrication point, the piston 2 can be lubricated; this lubrication method can only be achieved when the piston reaches the lubrication point. The lubrication point can only be lubricated, and the lubrication effect cannot be guaranteed

[0004] Someone also proposed to set up the lubricating channel 5 on the push rod 3 and set the lubricating point on the piston 2. In theory, this way can ensure that the piston 2 can be lubricated during the whole action process, but this scheme needs to use lubricating oil The hose 6 connects the lubricating channel 5 on the push rod 3 with the grease pump (or lubricating oil pump), and the push rod 3 rotates during operation, causing the lubricating hose 6 to often wrap around the push rod 3. It is easy to cause the lubrication channel to be blocked, which seriously affects the lubrication effect

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