CN201448210U

CN201448210U - Manual pump

Info

Publication number: CN201448210U
Application number: CN2009200462382U
Authority: CN
Inventors: 金忠
Original assignee: CHANGZHOU AIPU ULTRA HIGH PRESSURE HYDRAULIC SYSTEM Co Ltd
Current assignee: CHANGZHOU AIPU ULTRA HIGH PRESSURE HYDRAULIC SYSTEM Co Ltd
Priority date: 2009-06-01
Filing date: 2009-06-01
Publication date: 2010-05-05
Anticipated expiration: 2019-06-01

Abstract

The utility model relates to the technical field of manual pumps, in particular to a manual pump applicable in heavy mechanical industries such as shipbuilding, petrochemical, electric power, metallurgy, bridge and railway industries and the like. The manual pump comprises a pump body, a pressure relief valve subassembly connected with the pump body, a handle and an oil tank which are connected on the pressure relief valve subassembly. The pressure relief valve subassembly comprises a valve body, a low-pressure plunger piston and a high-pressure plunger piston which are arranged on the valve body, and an oil port arranged on the valve body. A plunger piston positioning cover is arranged on the upper end of the valve body at the outer ring of the low-pressure plunger piston; the sealing ring at the place where the low-pressure plunger piston is close to the high-pressure plunger piston is a Y-shaped ring; and the sealing rings arranged at the outer ring of the high-pressure plunger piston include a retainer ring, a gasket and a lining ring. A handle sleeve is sleeved at the front end of the handle, and the handle and the pressure relief valve subassembly are connected with a rocker arm through a connecting rod. The manual pump has the advantages that when an operator uses the manual pump, the plunger pistons can not be locked and are not easy to be worn down, and by utilizing a plurality of types of liners, the stability of the sealing rings can be improved.

Description

Hand pump

Technical field

The utility model relates to the hand pump technical field, especially a kind of hand pump that is applicable to heavy machinery industries such as shipbuilding, petrochemical industry, electric power, metallurgy, bridge, railway.

Background technique

At present, the application of hand pump more and more widely, now the plunger of hand pump commonly used is one, makes the operator in use, because defectives firmly uneven and the stuck and easy wearing and tearing of plunger that side force causes, and easy leakage of oil.

The model utility content

The technical problems to be solved in the utility model is: shortcoming and deficiency in order to solve above-mentioned existence provide a kind of flexible ultrahigh-pressure hydraulic power source hand pump.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of hand pump, has the pump housing, the pressure-relief valve assembly that is connected with the pump housing, be connected handle and fuel tank on the pressure-relief valve assembly, the pressure-relief valve assembly comprises valve body, be arranged at low-pressure plunger and high-pressure plunger and the hydraulic fluid port that is opened on the valve body on the valve body, the valve body upper end of low-pressure plunger outer ring is provided with plunger location lid, by manually, moving handle carries out initial suppressing, because load is less, beginning is mainly pressurizeed by the low-pressure plunger oil suction, hydraulic fluid flow rate can be bigger like this, when load acquires a certain degree, because the low-pressure plunger diameter is bigger, can't provide power, at this moment transfer high-pressure plunger oil suction pressurization to, bigger power source further is provided by minor diameter.

Further, for low-pressure plunger is better sealed, low-pressure plunger is a Y-shaped ring near the seal ring at high-pressure plunger place.

In order to improve the sealing of high-pressure plunger, the seal ring that the high-pressure plunger outer ring is provided with is back-up ring, packing ring and lining ring.

To the action of handle, the handle front end is with taper knob for convenience.

In order to make handle better drive the motion of pressure-relief valve assembly, handle is connected with rocking arm by connecting rod with the pressure-relief valve assembly.

The beneficial effects of the utility model are that hand pump of the present utility model when making that making the author uses, can not cause the defective of the stuck and easy wearing and tearing of plunger, uses various gasket, and the stability of seal ring is improved.

Description of drawings

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

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a partial structurtes pressure-relief valve modular construction schematic representation of the present utility model.

Among the figure 1, the pump housing, 2, the pressure-relief valve assembly, 2-1, valve body, 2-2, low-pressure plunger, 2-3, high-pressure plunger, 2-4, hydraulic fluid port, 2-5, plunger location lid, 2-6, Y-shaped ring, 2-7, back-up ring, 2-8, packing ring, 2-9, lining ring, 3, handle, 4, fuel tank, 5, taper knob, 6, connecting rod, 7, rocking arm.

Embodiment

In conjunction with the accompanying drawings the utility model being described in further detail now. these accompanying drawings are the schematic representation of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

The hand pump of preferred forms as shown in Figure 1 and Figure 2, have the pump housing 1, the pressure-relief valve assembly 2 that is connected with the pump housing 1, be connected handle 3 and fuel tank 4 on the pressure-relief valve assembly 2, pressure-relief valve assembly 2 comprises valve body 2-1, be arranged at low-pressure plunger 2-2 and the high-pressure plunger 2-3 on the valve body 2-1 and be opened in hydraulic fluid port 2-4 on the valve body 2-1, and the valve body 2-1 upper end of low-pressure plunger 2-2 outer ring is provided with the plunger location and covers 2-5.

Low-pressure plunger 2-2 is Y-shaped ring 2-6 near the seal ring at high-pressure plunger 2-3 place, 2-2 better seals to low-pressure plunger, the seal ring that high-pressure plunger 2-3 outer ring is provided with is back-up ring 2-7, packing ring 2-7 and lining ring 2-8, improved the sealing of high-pressure plunger 2-3, handle 3 front ends are with taper knob 5, handle 3 is connected with rocking arm 7 by connecting rod 6 with pressure-relief valve assembly 2, makes handle 3 better drive the motion of pressure-relief valve assembly 2.

When the utility model is implemented, by driving the motion of handle 3, make low-pressure plunger 2-2 oil suction pressurize, at this moment hydraulic flow is bigger, when load acquires a certain degree, because the diameter of low-pressure plunger 2-2 is bigger, can't provide power, thereby transfer high-pressure plunger 2-3 oil suction pressurization to, bigger power source can be provided, realized requirement power by minor diameter.

With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this model utility technological thought.The technical scope of this model utility is not limited to the content on the specification, must determine its technical scope according to the claim scope.

Claims

1. hand pump, have the pump housing (1), the pressure-relief valve assembly (2) that is connected with the pump housing (1), be connected handle (3) and fuel tank (4) on the pressure-relief valve assembly (2), it is characterized in that: pressure-relief valve assembly (2) comprises valve body (2-1), be arranged at low-pressure plunger (2-2) and the high-pressure plunger (2-3) on the valve body (2-1) and be opened in hydraulic fluid port (2-4) on the valve body (2-1), and valve body (2-1) upper end of low-pressure plunger (2-2) outer ring is provided with the plunger location and covers (2-5).

2. hand pump according to claim 1 is characterized in that: the seal ring that described low-pressure plunger (2-2) is located near high-pressure plunger (2-3) is Y-shaped ring (2-6).

3. hand pump according to claim 1 is characterized in that: the seal ring that described high-pressure plunger (2-3) outer ring is provided with is back-up ring (2-7), packing ring (2-8) and lining ring (2-9).

4. hand pump according to claim 1 is characterized in that: described handle (3) front end is with taper knob (5).

5. hand pump according to claim 1 is characterized in that: described handle (3) is connected with rocking arm (7) by connecting rod (6) with pressure-relief valve assembly (2).