CN205876700U - A voltage limiting formula overflow valve for control pump working pressure - Google Patents

Abstract

The utility model relates to a voltage limiting formula overflow valve for control pump working pressure, including voltage limiting formula overflow valve body, in back lid (1) cavity of voltage limiting formula overflow valve body screw in pump (7), pump (7) are as an organic whole with motor (8) equipment, and voltage limiting formula overflow valve body includes cone valve (2), spring (3) and end cap (4), and cone valve (2) central point puts to open has the valve opening, and in the valve opening was arranged in spring (3), end cap (4) was connected to spring (3) upper end, and voltage limiting formula overflow valve body is connected for the parallel with the business turn over hydraulic fluid port of pump (7), compared with the prior art, the utility model, novel structure, simple, reasonable in design, the cost is reduced, the high pressure of use that can the control pump, long service life has avoided traditional pressure regulating formula overflow valve to take place because of the improper adjustment of user leads to motor overstrain phenomenon, has satisfied the continuous innovation progress in system market, has adapted to the demand in market.

Description

A kind of limited pressure overflow valve using pressure for controlling pump

[technical field]

This utility model relates to overflow valve technical field, a kind of limited pressure using pressure for controlling pump Overflow valve.

[background technology]

At present, existing for control pump use pressure structure of relief valve as shown in Figures 1 and 2, this overflow valve For pressure-adjustable type overflow valve, its composition structure is made up of parts such as cone valve 2, spring 3, Hexagonal jacket 9, adjusting levers 10, pump and motor Fitting together, this pressure-adjustable type overflow valve screws in bonnet 1 chamber of pump, and its operation principle is: pressure-adjustable type overflow valve and pump Oil inlet and outlet is parallel combination mode, and the oil-out of pump is high-pressure side and the same chamber in cone valve front end, by pressure-adjustable type overflow valve Adjusting lever 5 carries out the setting of amount of spring compression, reaches the adjustment of pressure, when the pressure that uses of pump exceedes the pressure that overflow valve sets Time, the cone valve of overflow valve opens, and hydraulic oil passes through and flow to the oil-in of pump, and forms pressure drop thus reach overflow effect. Although the pressure adjusting range of this pressure-adjustable type overflow valve is many, but probably due to the improper adjustment of user causes the phenomenon of motor overload Occur.Along with the development of system industry has driven the development of hydraulic pressure industry, in order to meet the continuous innovation progress of System Market, if It is provided that a kind of limited pressure overflow valve using pressure for controlling pump, can will constantly improve to adapt to the demand in market.

[utility model content]

The purpose of this utility model seeks to solve above-mentioned deficiency and provides a kind of limit using pressure for controlling pump Pressure type overflow valve, simple in construction, reduce cost, it is possible to controlling the use maximum pressure of pump, service life is long, it is to avoid tradition Pressure-adjustable type overflow valve cause the phenomenon of motor overload to occur because of improper adjustment.

Design a kind of limited pressure overflow valve using pressure for controlling pump for achieving the above object, including limited pressure overflow Valve body, described limited pressure overflow valve body screws in bonnet 1 chamber of pump 7, and described pump 7 is assembled into one with motor 8, described Limited pressure overflow valve body includes that cone valve 2, spring 3 and plug 4, described cone valve 2 center have valve opening, and described spring 3 is put In valve opening, described spring 3 upper end connects plug 4.

Described limited pressure overflow valve body is parallel connection with the oil inlet and outlet of pump 7.

The high-pressure oil outlet of described pump 7 and the same room of cone valve front end chamber 6.

Interior hexagonal plug 5 it is provided with at the oil-in of described pump 7.

This utility model compared with the existing technology, novel structure, reasonable in design, it is possible to for controlling the use pressure of pump, Only limited pressure overflow valve body need to be screwed in during use in the chamber of bonnet, can prevent hydraulic power source from exceeding setup pressure value, from And making the use pressure of pump be limited, this limited pressure structure of relief valve is simple, reduces cost, it is possible to control the use of pump High pressure, service life is long, it is to avoid traditional pressure-adjustable type overflow valve because of may user improper adjustment and cause motor overload Phenomenon occurs, it is possible to meets the continuous innovation progress of System Market, has adapted to the demand in market.

[accompanying drawing explanation]

Fig. 1 is existing pressure-adjustable type structure of relief valve schematic diagram；

Fig. 2 is the lateral outer structural representation of Fig. 1；

Fig. 3 is structural representation of the present utility model；

Fig. 4 is the lateral outer structural representation of Fig. 3；

In figure: 1, bonnet 2, cone valve 3, spring 4, plug 5, interior hexagonal plug 6, cone valve front end chamber 7, pump 8, Motor 9, Hexagonal jacket 10, adjusting lever.

[detailed description of the invention]

Below in conjunction with the accompanying drawings this utility model is made further explained below:

As shown in accompanying drawing 3 and accompanying drawing 4, this utility model provides a kind of limited pressure overflow using pressure for controlling pump Valve, including limited pressure overflow valve body, limited pressure overflow valve body screws in bonnet 1 chamber of pump 7, and pump 7 is assembled into motor 8 Integrally, limited pressure overflow valve body includes that cone valve 2, spring 3 and plug 4, cone valve 2 center have valve opening, and spring 3 is placed in valve In hole, spring 3 upper end connects plug 4；Wherein, limited pressure overflow valve body is parallel connection with the oil inlet and outlet of pump 7, pump 7 High-pressure oil outlet and the same room of cone valve front end chamber 6, be provided with interior hexagonal plug 5 at the oil-in of pump 7.

Operation principle of the present utility model is: limited pressure overflow valve body is parallel combination mode with the oil inlet and outlet of pump, The i.e. oil inlet and outlet of overflow valve two hydraulic fluid port and pump is respectively connected with, and the oil-out of pump is high-pressure side and the same chamber in cone valve front end, works as pump Use pressure to exceed the setting of spring 3 to contend with value, then the cone valve unlatching of overflow valve, hydraulic oil passes through and flows to the oil-feed of pump Mouthful, thus reach the effect of pressure limiting.

Its operation instruction is: limited pressure overflow valve body is made up of parts such as cone valve 2, spring 3, plugs 4, pump and group of motors Being fitted together, limited pressure overflow valve body screws in bonnet 1 chamber of pump, and spring 3 completes the setting of precompression.Oil is from pump Oil-in enter through limited pressure overflow valve and make the use Stress control of pump within the specified range, thus reach the work of pressure limiting With.Owing to this limited pressure overflow valve is served only for a kind of range of regulation, thus can make lengthen the service life of electric-motor pump group.

This utility model is not limited by above-mentioned embodiment, other any real without departing from spirit of the present utility model The change made under matter and principle, modify, substitute, combine, simplify, all should be the substitute mode of equivalence, be included in this practicality Within novel protection domain.

Claims (4)

1. the limited pressure overflow valve using pressure for controlling pump, it is characterised in that: include limited pressure overflow valve body, institute Stating in bonnet (1) chamber that limited pressure overflow valve body screws in pump (7), described pump (7) is assembled into one with motor (8), described Limited pressure overflow valve body includes cone valve (2), spring (3) and plug (4), and described cone valve (2) center has valve opening, described Spring (3) is placed in valve opening, and described spring (3) upper end connects plug (4).

2. the limited pressure overflow valve using pressure for controlling pump as claimed in claim 1, it is characterised in that: described limited pressure Overflow valve body is parallel connection with the oil inlet and outlet of pump (7).

3. the limited pressure overflow valve using pressure for controlling pump as claimed in claim 1, it is characterised in that: described pump (7) High-pressure oil outlet and chamber (6) same room, cone valve front end.

4. the limited pressure overflow valve of pressure is used as claimed in claim 2 or claim 3 for controlling pump, it is characterised in that: described pump (7) interior hexagonal plug (5) it is provided with at oil-in.