SU812958A1 - Pump - Google Patents

Description

one

The invention relates to the mining industry, in particular hydraulic engineering, and can be used for transporting mortgages into the developed space, while the transportation of filling mixtures can be carried out both by mining and inclined mining.

A pump for transporting various mixtures and fluids is known, comprising a cylinder in which a hollow plunger with a pusher is installed, pressure valves and non-return flap valves fixed respectively on the plunger and cylinder, the petals of which are arranged in one layer l.

The disadvantage of this pump is that during transportation of the mixtures, which include large parts, the latter fall between the valve and the valve seat, impair the operation of the pump, and the flow areas formed in the valves create significant flow resistances for the mixtures. This reduces the reliability of the pump.

The aim of the inventions is to increase the reliability when transporting sedentary mixtures with the inclusion of large particles.

To achieve this goal, the valves have a second additional layer of petals, and both layers are successively bonded to each other with movable links, and the fastening of the petals themselves to the plunger and cylinder is made hinged.

In addition, the petals of one layer are displaced relative to the petals of another layer along the circumference.

The movable links are made in the form of grips rigidly fixed on the petals of one of the layers, and the weight of the petals located above the longitudinal axis of the valves exceeds the weight of the petals located below it.

FIG. 1 and 2 schematically represent the pump, a general view, respectively, at the working and idling stroke of the plunger, FIG. 3 is an enlarged view of A in FIG. one; in fig. 4 - section 5-B in FIG. 3 / in FIG. 5 and 6 are sections B-B and G-D in FIG. four.

The proposed pump consists of a cylinder 1 in which a hollow plunger 2 is installed with lugs 3 for fastening the pushers 4 of a pump drive (not shown), pressure 5

and reverse 6 flap valves, fixed respectively on the floor. (plunger 2 and cylinder 1. The petals on the pressure valve are located at least in two layers and contain petals 7 of the outer layer, which are attached to the hollow plunger 2 by hinges 8, and petals 9 of the inner layer, which are also attached to the hollow plunger 2 hinges 10. The petals of the check valve 6 are also arranged in at least two layers and contain petals 11 of the outer layer and petals 12 of the inner layer, which are attached to the cylinder by hinges 13 and 14, respectively. To petals 9 and 12 of the inner layers, respectively, of pressure 5 and At 6 valves, the clamps 15 are rigidly attached, the KOTOjMsie passes through the notches of the petals 7 and 11 (their outer layers} in end with the head 16 (fig.b).

The petals of the outer and inner layers of the valves are moistened relative to each other around the circumference and have ribs 17, located on levers, pestles 9 of the inner layer of the inlet valve 5 of the valve 5, with the latter. This effect contributes to the repulsion of large particles of conveying backfill mixtures from the approaching surfaces of the petals when the valves are closed. In addition, the side surfaces of all the petals have chamfers 18, which exclude the clogging of large particles when the valves are closed (Fig. 5). The axes of the hinges 8, 10, 13, 14 of the petals 7, 9, 11, 12 of the outer and inner layers of the valves 5 and b form the sides of a regular polygon (FIG. 3) which, when the petals 8 are turning, the hinges 8, 10, 13, 14 parallel movement petals raelichny layers. Petals 7 and 11 of the outer layers of the valves 5 and b are provided with plates 19 rigidly attached to them, which ensure faster locking of the valves. The fact that the petals located above the longitudinal axes of the valves are made of a larger mass also contributes to a reduction in the time for closing the valves. They do not evenly weigh the mass of the lower petals, but they also contribute to the ltfEato valves: To reduce the hydraulic resistance, the mixture moves from the cylinder 1 to the discharge pipe 20 The pump is equipped with a transition element 21. The pump feed line 22 has a diameter smaller than the diameter of cylinder 1 pump, and p his flange (not shown) installed gland sleeves 23 pushers 4 plunger 2.

The pump works as follows.

Transport of the mixture through the discharge pipe 20 is provided by the pump after the filling mixture is vertically or obliquely positioned.

Under the action of hydrostatic pressure by a constant flow in self-flowing mode, the pipeline in the shaft of the shaft enters through the supply pipe 22 into the cylinder 1 of the pump. At the beginning of the operating cycle, the plunger 2 is in the extreme right position, the petals of the discharge valve 5 are closed, and the petals of the check valve 6 are open (the end of the previous leading operating cycle). With the start of the idle stroke, the plunger 2 moves to the left, while from the mixture filling the left cavity of the cylinder, the petals of the discharge valve 5 turn in the hinges 8 and 10, opening the pressure valve, and the check valve b is closed (Fig. 2). At the end of the idle stroke, plunger 2 occupies the leftmost position in cylinder 1 while the discharge valve 5 is open and the check valve 6 is closed. With the beginning of the working stroke, plunger 2 moves to the right, and the mixture, in the right cavity of cylinder 1, presses on the flaps 19 and the surface of the petals of the discharge valve are forced to close. Upon further movement of the plunger 2, the mixture is extruded into the discharge pipe. 20, opening the check valve 6 (Fig. 1). When the plunger 2 is moved to the extreme right position, the duty cycle ends, with the discharge valve 5 remaining closed, and the check valve 6 is open.

The synchronism of petal rotation when opening and closing valves 5 and 6 is achieved by grippers 15, which, when rotating at least one petal, drive the left petals of both layers, being mobile links.

The reciprocating movement of the plunger 2 is carried out by the pushers 4 from the pump drive. Long distances for transporting backfill mixtures are achieved by installing several successively working pumps, and the forerunner should be able to supply the mixture to the cylinder, followed by a similar pump. A check valve in the pump is necessary in case of preventing the mixture from moving in the opposite direction, which is possible if there are transport pipeline sections laid on the rise.

The efficiency of the proposed pump is provided by large valve flow areas, straightness of the flow axis of the mixture, which, in turn, helps to reduce hydraulic resistance, transverse dimensions and low metal consumption, as well as the possibility of maintaining a constant flow rate over the entire length of the pipeline when the pump is installed in series.

Ingenuity formula

Claims (3)

1. A pump for transportation, predominantly of backfill mixtures, comprising a cylinder in which a hollow plunger with a pusher is installed, pressure and return flap valves fixed respectively on the plunger and cylinder, and the petals of which are arranged in a single layer, differing from increase the reliability when transporting low-mobility mixtures with the inclusion of large particles, the valves have a second additional layer of petals, and both layers are successively bonded to each other by mobile links, and the fastening petals themselves to the plunger and the cylinder is tuapnirnym. 2. Pump according to Claim 1, characterized in that the petals of one layer are offset relative to the petals of the other layer around the circumference. 3. Pump according to Claim 1, characterized in that the movable coupling is made in the form of grips rigidly fixed on the petals of one of the layers. Sources of information taken into account in the examination 1. USSR author's certificate 15 I 83938, cl. G 04 F 10/02, 1949. Fog.2 // /