CN201344129Y

CN201344129Y - Air inlet capacity control valve for air compressor

Info

Publication number: CN201344129Y
Application number: CNU2008201569895U
Authority: CN
Inventors: 郑雷飞
Original assignee: SHANGHAI FEIHE INDUSTRY GROUP Co Ltd
Current assignee: Shanghai Feihe Compressor Manufacturing Co., Ltd.
Priority date: 2008-12-12
Filing date: 2008-12-12
Publication date: 2009-11-11
Anticipated expiration: 2018-12-12

Abstract

The utility model relates to an air inlet capacity control valve for an air compressor, which comprises a valve body, wherein, a valve plate is arranged at the upper part of the valve body; a seal ring is arranged in a contact position of the valve plate and the valve body; a valve rod passes through the valve plate, and one end of the valve rod is connected with one end of a return spring; a buffer spring is arranged in the valve body; the other end of the return spring is connected with one end of the buffer spring; a piston is connected to the other end of the buffer spring; an electromagnetic valve is also arranged in the valve body; an air inlet end of the electromagnetic valve is connected with an air inlet end of an integrated valve containing an atmospheric valve through a first hose; an exhaust end of the electromagnetic valve is directly connected to an integrated valve piston of the integrated valve and communicated with an air cavity below the piston; and one end of an exhaust end of the integrated valve is communicated with the valve body through a second hose, and the other end of the exhaust end of the integrated valve is connected with a capacity adjustment valve. The utility model has the beneficial effects that the pressure difference loss is enabled to be reduced to the lowest, and the inlet capacity control valve keeps an economical fit with air consumption of users, so that the performance of the air compressor is improved, the specific power is reduced, and the real energy-saving effect is achieved.

Description

Used for air compressor air inlet capacity regulating valve

Technical field

The utility model relates to a kind of used for air compressor air inlet capacity regulating valve (abbreviation suction valve), relates in particular to this adjusting innervalve assembly.

Background technique

Suction valve is that the tolerance of screw air compressor (hereinafter to be referred as screw air compressor) is regulated core component, and is particularly crucial in the auxiliary equipment of screw air compressor.The quality of suction valve directly affects the overall performance of helical-lobe compressor.

In recent years, fuel injection helical lobe compressor replaces piston type air compressor gradually becomes power air commonly used the source is provided.Air intake control valve has also had many suppliers at present as the critical piece of air inlet control.Domestic manufacturing-oriented producer is owing to start late, and majority is improved and copied on the import prototype is entered the industry.After obtaining the certain market share and order, most producers are competition the only resource with the price, and have ignored the technique improvement of product and the raising of serviceability concentrating on to reduce cost.

According to the theory of fluidics,, be the principal element that influences the valve body pressure loss because the internal structure complexity of valve runner produces such as phenomenons such as spiral, turbulent flows when air passes through the valve road.Therefore weigh the quality of a suction valve, under the equal flow, difference pressuring loss is more little, and is safe, and performance is excellent; Otherwise inevitable specific power that in the end directly influences this compressor of suction valve that difference pressuring loss is big.

As seen from Figure 1: the suction valve of prior art only is a suction valve, and the parts of controlling this suction valve all need pipeline to be connected on the valve body, and the connecting pipeline more complicated is loaded down with trivial details; And the suction valve of prior art is the Normally closed type suction valve, because spring rate is big, the stroke of valve plate can not be very big, so airway resistance is bigger.Among the figure: 1, valve body; 2, valve plate; 3, valve rod; 4, wear-resistant seal circle; 5, Returnning spring.

Summary of the invention

The utility model technical issues that need to address have provided a kind of used for air compressor air inlet capacity regulating valve, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises: valve body; In valve body, comprise: the valve plate on valve body top; The contacting point of valve plate and valve body is a seal ring; A valve rod that passes valve plate, an end of valve rod connects an end of a Returnning spring; Also comprise: an end that connects the damping spring of the Returnning spring the other end; The other end of damping spring connects a piston; Also comprise: the solenoid valve inlet end is connected by the inlet end of first flexible pipe with the integrated valve that contains atmospheric valve, and the exhaust end of solenoid valve directly is connected on the integrated valve piston of integrated valve and with air cavity below the piston and communicates; Pressurized gas acts on piston and the integrated valve piston simultaneously when solenoid valve is opened, integrated valve exhaust end one side communicates with valve body by second flexible pipe and finishes pressurized gas emptying, the other end transfers valve to link to each other with appearance, finishes the step-less adjustment of compressor air-discharging amount under the effect of Rong Tiaofa.

Compared with prior art, the beneficial effects of the utility model are: produce such as phenomenons such as spiral, turbulent flows when taking into full account air by the valve road, it is minimum that difference pressuring loss is dropped to; Not reducing under its safe, reliable, durable prerequisite, with the air inlet valve body, atmospheric valve, pressure regulator (also claiming Rong Tiaofa), solenoid valve and pipeline fittings organically combination integrate, and reduce pilot line, and be both attractive in appearance, is convenient to again install connect; It is little to start load, reduces the starting time of the inrush current and the shortening motor of motor; And the air inflow of under the control system effect, regulating compressor, make itself and user's gas consumption keep the coupling of an economy, improve the performance of air compressor, reduce specific power, reach really energy-conservation effect.

Description of drawings

Fig. 1 is a suction valve structural representation in the prior art;

Fig. 2 is the utility model structural representation;

Fig. 3 is the plan view of Fig. 2.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

By Fig. 2, Fig. 3 as seen: the utility model comprises: valve body 1; In valve body 1, comprise: the valve plate 2 on valve body 1 top; The contacting point of valve plate 2 and valve body 1 is a seal ring 4; A valve rod 3 that passes valve plate 2, an end of valve rod 3 connects an end of a Returnning spring 5; Also comprise: an end that connects the damping spring 6 of Returnning spring 5 the other ends; The other end of damping spring 6 connects a piston 7; Also comprise: solenoid valve 8 inlet ends are connected by the inlet end of first flexible pipe 11 with the integrated valve 10 that contains atmospheric valve, and the exhaust end of solenoid valve directly is connected on the integrated valve piston 13 of integrated valve 10 and with air cavitys below the piston 7 and communicates; Pressurized gas acts on piston 7 and the integrated valve piston 13 simultaneously when solenoid valve is opened, integrated valve exhaust end one end communicates with valve body 1 by second flexible pipe 12 and finishes pressurized gas emptying, the other end transfers valve 9 to link to each other with appearance, finishes the step-less adjustment of compressor air-discharging amount under the effect of Rong Tiaofa.

Solenoid valve in the utility model is loading and is unloading the control gaseous discharge that can cut out suction port when switching; Hold and transfer valve and the organic coupling of air inlet valve body, the emptying speed of control atmospheric valve is regulated air inflow and user's gas consumption.

Produce such as phenomenons such as spiral, turbulent flows when the utility model has taken into full account air by the valve road, it is minimum that difference pressuring loss is dropped to; Because of with the air inlet valve body, atmospheric valve, pressure regulator (also claiming Rong Tiaofa), solenoid valve and pipeline fittings organically combination integrate, and reduce pilot line, and be both attractive in appearance, is convenient to again install connect, and reduced cost of production simultaneously; Not oil spout when air compressor unloading or shutdown are guaranteed in the Returnning spring design; Solenoid valve is also just taken condensed water out of so together loading and unload when switching and the control gaseous of closing suction port can being discharged, and fundamentally guaranteeing does not have condensed water to gather; Reduce the inrush current and the starting time of motor; Under the control system effect, regulate the air inflow of compressor, make itself and user's gas consumption keep the coupling of an economy, improve the performance of air compressor, reduce specific power, reach really energy-conservation effect.

The utility model organically makes up valve body, solenoid valve, Rong Tiaofa, atmospheric valve and pipeline fittings and integrates, and reduces pilot line, and is both attractive in appearance, is convenient to again install connect.

When the air compressor air compressor started or unload, solenoid valve got electric, and intrasystem pressurized gas acts on the piston, moved on the piston valve plate is closed, and atmospheric valve is opened simultaneously, with intrasystem pressurized air emptying, kept system pressure, reduced main motor load; When air compressor loads, the solenoid valve dead electricity, by the effect of the gas differential pressure of valve plate both sides, valve plate moves down, and valve is opened the air compressor proper functioning, and atmospheric valve cuts out simultaneously.

Claims

1. a used for air compressor air inlet capacity regulating valve comprises: valve body (1); In valve body (1), comprise: the valve plate (2) on valve body (1) top; The contacting point of valve plate (2) and valve body (1) is seal ring (4); A valve rod (3) that passes valve plate (2), an end of valve rod (3) connects an end of a Returnning spring (5); It is characterized in that also comprising: an end that connects the damping spring (6) of Returnning spring (5) the other end; The other end of damping spring (6) connects a piston (7); Also comprise: solenoid valve (8) inlet end is connected by the inlet end of first flexible pipe (11) with the integrated valve that contains atmospheric valve (10), and the integrated valve piston (13) that the exhaust end of solenoid valve directly is connected integrated valve (10) upward and with air cavity below the piston (7) communicates; Integrated valve exhaust end one end communicates with valve body (1) by second flexible pipe (12), and the other end links to each other with Rong Tiaofa (9).