CN2239512Y - Double-cylinder reciprocating water pump - Google Patents

Abstract

The utility model relates to a double-cylinder reciprocating water pump. The technique of the utility model is characterized in that a gearwheel and a rack driving mechanism are adopted in the structure of the existing double-cylinder reciprocating water pump. The gearwheel is driven by a turning handle and a driving shaft; the gearwheel drives two racks to do opposite straight reciprocating motion; the two racks is fixed to pistons. The technique can make a piston shaft do straight motion without radial force, so part depreciation is reduced; the work efficiency of water pump is enhanced; service life is extended.

Description

The twin-cylinder reciprocating water pump

The water pump that the utility model relates to belongs to the improvement of traditional water pump structure.

The present manpower water pump that uses, no matter be that single cylinder is reciprocating type, still twin-cylinder reciprocating all adopts crank mechanism or lever transmission mechanism, these two kinds of driving mechanisms drive piston and do in cylinder body in the straight reciprocating motion, all have the shortcoming that piston and cylinder arm are given in the radial force effect, so make the parts depreciation of water pump big, wearing and tearing are uneven, increase power consumption, influence the working efficiency of water pump.

The purpose of this utility model is: provide a kind of and make the twin-cylinder reciprocating water pump of driving mechanism with gear, tooth bar, when it can make piston do axial linear movement, do not have radial force, thereby reduce the part frictional resistance, improve the working efficiency of water pump, increase the service life.

The technical solution of the utility model is: a kind of twin-cylinder reciprocating water pump, include the pump housing of taking the mouth of a river out of and the loam cake that is connected mutually with the pump housing with priming hole, base with water inlet, live axle by pump housing supporting, what its axle head and the pump housing were outer removes being connected, the pump housing below the live axle is made of two identical fluid cylinders arranged side by side, the piston of taking water valve out of is arranged respectively in the fluid cylinder, the fluid cylinder bottom surface is respectively equipped with into water valve, it is characterized in that: the gear that is connected on the live axle is meshed with two tooth bars on being connected in two-piston.

Adopt the water pump of crank mechanism or lever transmission mechanism before, because connecting rod has periodic angle to change when up and down reciprocatingly working, when making the piston up-down of interlock, also there is corresponding angle to change, this angle variation effect is to radial force of surface of contact of piston and cylinder arm, then produce the deflection wearing and tearing, the leather cup that the water pump part particularly is contained on the piston damages easily.Present technique changes existing crank mechanism or leverage into gear, rack gear, then gear swings with live axle, it drives tooth bar and does straight line motion up and down, this straight line motion drives piston with vertical power, there is not the variation of angle, so make piston on the cylinder arm, not have radial force to exist, meshing of wheel and rack near rolling friction, and therefore, it has overcome the deflection wearing and tearing of prior art, resistance to motion is reduced, it is laborsaving to work, and in the function that keeps existing twin-cylinder reciprocating water pump simultaneously, increases work efficiency, increase the service life, realize the purpose of this utility model.

Below in conjunction with a description of drawings embodiment of the present utility model.

Fig. 1 is the structural representation of the utility model twin-cylinder reciprocating water pump.

Fig. 2 is the A-A view of the utility model Fig. 1.

Fig. 3 is the B-B view of the utility model Fig. 2.

Among the figure, the pump housing (11) top is connected by screw (17) and loam cake (16), and the bottom is connected by screw (12) and base (27), and the pump housing, loam cake, the base place of combining are provided with seal ring (18) (13).Irrigating gate, screw (14), (15) are housed on the irrigating gate of loam cake (16), and the pump housing (11) is provided with water outlet (19), and base (27) is provided with water inlet (31) and dewatering outlet, screw (28,29).The characteristics of present technique are: the pump housing (11) is by bearing (5), (9) supporting driving shaft (30) at two ends, seal ring (6) is arranged on the live axle, remove (1) end is welded with pyrometric cone borehole jack (8), this borehole jack cooperates with live axle (30) end of stretching out pump housing outside and is connected by screw (7), in the pump housing, axle sleeve (4) is housed on the live axle (30), is connected by screw (3) between axle and the axle sleeve, tooth sector (2) is housed on axle sleeve (4).Below in live axle (30) both sides, the pump housing (11) is two identical fluid cylinders arranged side by side, and the internal structure of two fluid cylinders is identical, is prior art, be that the fluid cylinder bottom surface is provided with valve body (25), this valve body and above it check envelope (24), position-limited nail (26) constitute and go into water valve.Be provided with piston (23) in the fluid cylinder, the circumference of piston (23) is provided with leather cup (22), and piston (23) makes valve body with its body and check ring (21), position-limited claw (20) constitute outlet valve.Piston (23) is separated into upper and lower two active chambers with fluid cylinder, is provided with tooth bar (10) in piston (23) is gone up active chamber, and piston (23) is connected with tooth bar (10), and tooth bar (10) is contained in the slideway of the pump housing (11).Above-described two fluid cylinder internal structures are identical, different is: divide two tooth bars (10) that are located in two fluid cylinders, be meshed with gear (2) respectively in live axle (30) both sides, the position of two tooth bars (10) one on the other, when gear (2) rotated, the moving direction of two tooth bars (10) was opposite.

During use, water inlet (31) on the water pump base (27) is connected with well casing, back out diversion screw (14) then, in pump, annotate diversion, push-and-pull is simultaneously removed (1), make the synchronous left-right rotation of tooth sector (2) on live axle (30), axle sleeve (4), the axle sleeve, do straight reciprocating motion with two tooth bars (10), two pistons of drive (23) of tooth sector (2) engagement in two fluid cylinders, the moving direction of two pistons (23) is opposite.When piston (23) is up, check ring (21) on the piston is subjected to the pressure effect of water in the active chamber on the piston, be close on the mouth of a river of valve body, outlet valve is closed, and by the leather cup on the piston external diameter (22), make up and down to seal between two active chambers, the space of active chamber diminishes gradually on the piston because piston stroking upward makes, and the space of active chamber becomes big gradually under the piston, water on the piston in the active chamber is squeezed, discharge from water outlet (19), produce negative pressure, the effect of negative pressure under the piston in the active chamber, make on the check envelope (24) and move, leave valve body, go into water valve and be opened, the water in the well casing is sucked in the fluid cylinder.Piston (23) is descending, and the pressure of the interior water of active chamber moves down check envelope (24) under the piston, is attached on the valve body, makes into water valve and closes, and hydraulic pressure is washed the check ring (21) on the piston open in the while chamber, and outlet valve is opened, and moves by position-limited claw (20) spacing on the check ring.Because descent of piston, make that the active chamber space constantly diminishes under the piston, hydraulic pressure constantly increases, and the active chamber space constantly increases on the piston, and hydraulic pressure constantly reduces, and the water in the following active chamber enters active chamber by the water valve (25) of going on the piston.Continuously swing is removed (1), by gear, rack gear, drives piston in two fluid cylinders and does linear reciprocation, motion that direction is opposite, makes the water in the well casing be raised continuously, discharge.

Claims (1)

1, a kind of twin-cylinder reciprocating water pump, include the pump housing of taking the mouth of a river out of and the loam cake that is connected mutually with the pump housing, base with water inlet with priming hole, live axle by pump housing supporting, what its axle head and the pump housing were outer removes being connected, the pump housing below the live axle is made of two identical fluid cylinders arranged side by side, the piston of taking water valve out of is arranged respectively in the fluid cylinder, and the fluid cylinder bottom surface is respectively equipped with into water valve, it is characterized in that: the gear that is connected on the live axle is meshed with two tooth bars on being connected in two-piston.

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