CN2253406Y

CN2253406Y - Hand pump

Info

Publication number: CN2253406Y
Application number: CN 95209448
Authority: CN
Inventors: 柯漠义
Original assignee: FANCHANG COUNTY FINE MACHINERY PLANT
Current assignee: FANCHANG COUNTY FINE MACHINERY PLANT
Priority date: 1995-04-27
Filing date: 1995-04-27
Publication date: 1997-04-30
Anticipated expiration: 2005-04-27

Abstract

The utility model relates to a hand pump, a hand pressure bar of the hand pump is connected with a moving ring of a piston rod through a crank connecting rod, a pump cylinder is closed, and a piston is composed of a bidirectional rubber bowl, an upper shim plate and a lower shim plate. The utility model is provided with a water inlet valve of an upper chamber, a water inlet valve of a lower chamber, a water outlet valve of an upper chamber and a water outlet valve of a lower chamber; the outer side of the pump cylinder is provided with a water outlet pipe and a water inlet pipe; an inlet and outlet system of the lower chamber of the pump cylinder is successively composed of a water inlet, the water inlet valve of a lower chamber, the water outlet valve of a lower chamber, the water outlet pipe and a water outlet, and an inlet and outlet system of the upper chamber of the pump cylinder is successively composed of a water inlet, the water inlet valve of an upper chamber, the water inlet pipe, the water outlet valve of an upper chamber and a water outlet, so the utility model can do work to make water effuse in the whole course of going up and down of the piston.

Description

A kind of hand pump

The utility model relates to a kind of hand pump.

At present the hand pump that generally uses of the vast rural area of China mainly is a kind of single cylinder double valve type hand pump, and it is mainly by manual depression bar, the depression bar support, and piston rod, piston, pumping cylinder, two valves of entery and delivery port and water inlet and outlet are formed.During work, press manual depression bar, drive piston and pump; Piston stroking upward is inhaled and is closed outlet valve, inhales and drives water valve into, the pumping cylinder water inlet; Descent of piston presses off inlet valve, backs down outlet valve, the water outlet water outlet, and each reciprocal process is interrupted water outlet once.The subject matter that this hand pump exists is: 1, in fact the manual depression bar of this pump is exactly a lever, therefore, during operation, easily causes the piston rod swing excessive, influences the piston seal performance; 2, pumping cylinder is an opened type, is subject to external environmental, and is unhygienic; 3, piston glue bowl is unidirectional monolithic glue bowl, quick abrasion, and sealability is also poor; 4, the water inlet and outlet valve is a slat belt, easily clamping stagnation, insensitive; 5, only do work when descent of piston, water outlet is interrupted, and work efficiency is low.

Goal of the invention of the present utility model provides and a kind ofly can overcome above-mentioned shortcoming, the hand pump of up-downgoing overall process acting water outlet.

For achieving the above object, the technical solution adopted in the utility model is: on above-mentioned common manual pump foundation, (1) by a crank-connecting rod, living in encircling with the piston rod top again is connected with manual depression bar; (2) the pumping cylinder upper end-hole adds a pump cover, in the middle of the pump cover hole is arranged, and piston rod passes from the hole, but the easy on and off motion is placed seal ring between hole and the bar; (3) piston is made up of two-way glue bowl, punch pad and lower bolster, and it is affixed with piston rod that two-way glue bowl clamps the back by upper and lower backing plate; (4) 4 valves are set: upper and lower chamber inlet valve, upper and lower chamber flowing water Valve; The pumping cylinder outside is provided with an outlet pipe, an intake pipe; Water intake, cavity of resorption inlet valve, cavity of resorption flowing water Valve, outlet pipe and water outlet constitute pumping cylinder cavity of resorption inlet and outlet system successively, and water intake, epicoele inlet valve, intake pipe, epicoele flowing water Valve and water outlet constitute the epicoele inlet and outlet system successively.During work, manually depression bar pumps by crank-connecting rod drive piston; During piston stroking upward, back down the epicoele flowing water Valve, press off the epicoele inlet valve, inhale and open the cavity of resorption inlet valve, inhale and close the cavity of resorption flowing water Valve, make epicoele water outlet, cavity of resorption intake; During descent of piston, back down the cavity of resorption flowing water Valve, press off the cavity of resorption inlet valve, inhale and open the epicoele inlet valve, inhale and close the chamber flowing water Valve, make cavity of resorption water outlet, epicoele water inlet; Thereby realize the purpose of pump in whole up-downgoing overall process acting water outlet.

Above-mentioned two-way glue bowl can be designed to bi-directional symmetrical up and down, and waist is inhaled in obtuse angle in the middle part, and last lower edge is most advanced and sophisticated acute angle.

Above-mentioned valve can be designed to needle plate formula valve, still, apart from cavity of resorption inlet valve certain altitude position, a water inlet card is set bottom the cavity of resorption of pump, to prevent the dislocation of cavity of resorption inlet valve, upset.

In such scheme, because manually setting up a crank-connecting rod between depression bar and the piston rod, this had both made operation more laborsaving than former single level type, had guaranteed that again piston rod can keep vertical motion substantially at the up-downgoing movement process, do not shake and stop, improved the sealability of pump; Pumping cylinder changes sealed mode into, makes the water source not be subject to external environmental; The employed two-way glue bowl of piston is that the hollow sharp edge contacts with cylinder body, has improved the air tightness of piston, and the sealability of pump improves greatly, has reduced the surface friction drag with casing wall, reduces wearing and tearing, has prolonged the working life of glue bowl, operates more laborsaving; Needle plate formula valve and valve body do not have affixed point, and it is convenient to change, and moves more reliable; Most importantly this pump has adopted two cover inlet and outlet systems, make pump all do work in the up-downgoing overall process, this just makes the work efficiency of pump improve greatly, improves nearly one times of work efficiency than former conventional pump, water outlet has reached and has been interrupted extremely short approximate continuous water outlet also by former interruption water outlet.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is the structural representation of present embodiment.

Fig. 2 is the longitudinal section structure for amplifying schematic representation of middle piston embodiment illustrated in fig. 1.

As shown in Figure 1, present embodiment is made up of outlet pipe 17, the intake pipe 18 of pump seat 1, pumping cylinder 2, manual depression bar 3, depression bar support 4, crank-connecting rod 5, piston rod 6, piston 7, seal ring 8, pump cover 9, water intake 10, water outlet 11, cavity of resorption inlet valve 12, cavity of resorption flowing water Valve 13, epicoele inlet valve 14, epicoele flowing water Valve 15, water inlet card 16 and discrete cylinder body both sides.Press manual depression bar 3 and drive piston rod 6 and piston 7 do up-and-down movements up and down by crank-connecting rod 5.When piston 7 is up, back down epicoele flowing water Valve 15, press off epicoele inlet valve 14, inhale and open cavity of resorption inlet valve 12, inhale and close cavity of resorption flowing water Valve 13, make epicoele water discharge by water outlet 11, cavity of resorption is by water intake 10 water inlets; When piston 7 is descending, back down cavity of resorption flowing water Valve 13, press off cavity of resorption inlet valve 12, inhale and open epicoele inlet valve 14, inhale and close chamber flowing water Valve 15, cavity of resorption water is discharged by water outlet 11 by outlet pipe 17, epicoele by water intake 10 by intake pipe 18 water inlets.Thereby realize that this pump is in up-downgoing overall process acting water outlet purpose.

Valve in the present embodiment as shown in fig. 1, all adopt needle plate formula valve, a water inlet card 16 suitably highly is set above cavity of resorption inlet valve 12, this plate is a porous structure, its bottom surface is along omiting on the big circumference than diameter valve, and vertical fixing has block, purpose, can guarantee the current turnover, can prevent that again valve from coming off, overturning.

As shown in Figure 2, for guarantee that piston 7 can both effectively do work in the uplink and downlink process, piston 7 in the present embodiment is made up of punch pad 19, lower bolster 20 and two-way glue bowl 21, and two-way glue bowl 21 is sandwiched between the upper and lower backing plate, is secured on the piston rod 6 by check nut 22 again.Two-way glue bowl 21 is upper and lower bi-directional symmetrical, waist is inhaled in obtuse angle in the middle part, upper and lower edge mouth is most advanced and sophisticated acute angle, this structure makes the piston 7 and the tightness of inboard wall of cylinder block improve, simultaneously, owing to reduced direct contact surface, also just reduced the surface friction drag between piston 7 and inboard wall of cylinder block, work becomes more laborsaving.

Claims

1, a kind of hand pump, constitute by manual depression bar (3), depression bar support (4), piston rod (6), piston (7), pumping cylinder (2), water intake (10), water outlet (11), inlet valve (12) (14), flowing water Valve (13) (15), pump seat (1), it is characterized in that:

The manual depression bar of a (3) is lived in encircling by crank-connecting rod (5) and piston rod (6) top and is connected;

B pumping cylinder (2) upper end-hole has a pump cover (9), in the middle of the pump cover (9) hole is arranged, and piston rod (6) passes from the hole, but the easy on and off motion is placed with seal ring (8) between hole and the bar;

C piston (7) is made up of punch pad (19), lower bolster (20) and two-way glue bowl (21), and it is affixed with piston rod (6) that two-way glue bowl (21) clamps the back by upper and lower backing plate (19) (20);

D is provided with 4 valves: epicoele inlet valve (14), cavity of resorption inlet valve (12), epicoele flowing water Valve (15), cavity of resorption flowing water Valve (13), pumping cylinder (2) outside is provided with an outlet pipe (17), an intake pipe (18), water intake (10), cavity of resorption inlet valve (12), cavity of resorption flowing water Valve (13), outlet pipe (17) and water outlet (11) constitute the cavity of resorption inlet and outlet system of pumping cylinder (2) successively, and water intake (10), epicoele inlet valve (14), intake pipe (18), epicoele flowing water Valve (11), water outlet (11) constitute the epicoele inlet and outlet system successively.

2, according to the described hand pump of claim 1, it is characterized in that: described two-way glue bowl (21) is upper and lower bi-directional symmetrical, and waist is inhaled in obtuse angle in the middle part, and upper and lower edge mouth is most advanced and sophisticated acute angle.

3, according to claim 1 or 2 described hand pumps, it is characterized in that: described water-in and water-out valve (12) (14) (13) (15) is a needle plate formula valve, be provided with a water inlet card (16) in pumping cylinder (2) cavity of resorption bottom apart from the suitable height and position of cavity of resorption inlet valve (12), prevent cavity of resorption inlet valve (12) dislocation, upset.