CN102818066A

CN102818066A - Flow control valve

Info

Publication number: CN102818066A
Application number: CN201210314882XA
Authority: CN
Inventors: 陈堃
Original assignee: WUXI MAIXIN TECHNOLOGY INDUSTRIAL Co Ltd
Current assignee: WUXI MAIXIN TECHNOLOGY INDUSTRIAL Co Ltd
Priority date: 2012-08-30
Filing date: 2012-08-30
Publication date: 2012-12-12

Abstract

The invention provides a flow control valve. The flow control valve comprises a mounting seat, a sliding sleeve, a temperature sensor, a spring and a plug, the mounting seat is fixed at a valve port and is provided with an internal thread, the sliding sleeve is cylindrical, the spring is sleeved outside the sliding sleeve and is a compression spring, the temperature sensor is connected with the sliding sleeve, the temperature sensor and the sliding sleeve with the spring are mounted in the mounting seat, the plug is barrel-shaped, an external thread is arranged on the side wall of the plug and connected with the internal thread of the mounting seat, and the temperature sensor butts against the plug due to elasticity of the spring. By the flow control valve, when the outdoor temperature difference is high, oil supply of a system during start of equipment at low temperature can be guaranteed by the aid of a low-temperature bypass pipeline control device, incapability of starting the equipment or equipment failure in a short period after the equipment is started is prevented, safety of products is promoted, and oil supply is guaranteed.

Description

Flow control valve

Technical field

The present invention relates to a kind of flow control valve, be mainly used in a kind of valve in the oil circuit.

Technical background

The shortcoming of existing technology is, at extremely frigid zones, it is low excessively because of oily temperature when causing device start that indoor/outdoor temperature-difference is excessive, and flowability is too poor and cause that the internal system fuel feeding is not enough, can't normally start or equipment failure takes place in the short time after startup thereby equipment occurs.Therefore, need a kind of special construction to guarantee that equipment can normally start and can equipment failure not take place because of the oil mobility difference under cryogenic conditions.

Summary of the invention

In order to overcome above defective, the present invention provides a kind of flow control valve, and former pipeline is installed a bypass tube road, and with the valve port place that flow control valve is installed this bypass line, during high temperature, this bypass line is obstructed; During low temperature, this bypass line can make the oil in the former oil pipe flow out from bypass line, directly gets into equipment needed thereby.

For solving above technical problem, the present invention provides a kind of flow control valve, and said flow control valve comprises fitting seat, flip sleeve, temperature transducer, spring and shutoff; Fitting seat is fixed on the valve port place, and fitting seat has internal thread; Flip sleeve is a Cylindrical object, and spring housing is at flip sleeve external compression spring, and temperature transducer is connected with flip sleeve, is installed in the fitting seat with the flip sleeve that has spring; Shutoff is barrel-shaped, and sidewall has outside thread, be connected with the fitting seat internal thread, temperature transducer since the elastic force effect of spring put and peak in the shutoff.

Further, said flip sleeve one end has shoulder, and spring clip is at shoulder;

Further, the other end of said flip sleeve has radial slot.

Further, said temperature transducer has push rod, and this push rod is put and peaked at shutoff.

Further, has gasket seal between said shutoff and the connecting base.

Control valve structure of the present invention can make equipment when the outdoor temperature difference is big; System's fuel feeding when making the device start when the low temperature through low temperature bypass line control gear is guaranteed; The equipment of preventing can't start or start generation equipment failure problem in the short time of back; Promote security of products, got rid of the fuel feeding problem.

Description of drawings

Fig. 1 is the unimpeded structure graph of flow control valve low temperature of the present invention;

Fig. 2 is flow control valve alternating temperature of the present invention half logical structure graph;

Fig. 3 is a flow control valve high temperature closure structure graph of the present invention;

Mark is following among the figure: the 1-bypass line; The 2-fitting seat; The 3-flip sleeve; The 4-shutoff; The 5-push rod; The 6-temperature transducer; The 7-spring; The 8-gasket seal; The negotiable zone of 9-; 10-first valve port; 11-second valve port.

Arrow among the figure is represented the direction that oil flows in pipeline.

Embodiment

Shown in Fig. 1-3, flow control valve comprises fitting seat 2, flip sleeve 3, temperature transducer 6, spring 7 and shutoff 4; Fitting seat 2 is fixed on second valve port, 11 places, and fitting seat 2 has internal thread; Flip sleeve 3 is a Cylindrical object, and spring 7 is enclosed within flip sleeve 3 external compression springs 7, and temperature transducer 6 is connected with flip sleeve 3, is installed in the fitting seat 2 with the flip sleeve that has spring 73; Shutoff 4 is barrel-shaped, and sidewall has outside thread, is connected with fitting seat 2 internal threads, and temperature transducer 6 is because the elastic force effect of spring 7 is put peaks in the shutoff 4.

Flip sleeve 3 one ends have shoulder, and spring 7 is stuck in shoulder;

The other end of flip sleeve 3 has radial slot.

Temperature transducer 6 has push rod 5, and this push rod 5 is put and peaked in the shutoff 4.

Has gasket seal 8 between shutoff 4 and the connecting base 2.

Shown in Fig. 1-3; One bypass tube road 1, former pipeline is set on oiling the direction of passing through; This pipeline directly connects the oily equipment that needs; Be provided with first valve port 10 in bypass line 1 and former pipeline joint, and on bypass line 1, be provided with second valve port 11 with first valve port, 10 opposite positions, the above two valve port is used to install this flow control valve.Flip sleeve 3 is contained on first valve port 10, and shutoff 4 is contained on second valve port 11, utilizes temperature inductor 6 on the flip sleeve 3 to control flip sleeve 3 with spring 7 and slidably reciprocates at first valve port, 10 places.

As shown in Figure 1, be the unimpeded structure graph of flow control valve low temperature of the present invention.Have among the figure and can find out, the negotiable zone under this state is maximum, is when the temperature transducer sense temperature is low, and the temperature transducer push rod contracts in temperature transducer.Under the low-temperature condition, oil mobility is very poor in the oil circuit, through bypass line, the oil in original oil circuit is drawn, and gets into work system.

As shown in Figure 2, be flow control valve alternating temperature of the present invention half logical structure graph; As can be seen from the figure, when temperature raise to some extent, the negotiable zone under this state diminished, and promptly the oily discharge value of this moment is less, and the overhang of temperature transducer push rod from temperature transducer is bigger.This moment, temperature raise to some extent, and the oil mobility in the oil circuit is better, and a part of oil can normally get into work system through original oil circuit, and another part can directly get into work system through the oil pipe in the bypass line.

As shown in Figure 3, be flow control valve high temperature closure structure graph of the present invention; As can be seen from the figure; Negotiable zone under this state is zero, and the overhang of temperature transducer push rod from temperature transducer is maximum, promotes flip sleeve; And then pressure spring; Flip sleeve is realized the complete shutoff of first valve port under the condition of high temperature that the oil that has good fluidity in the oil circuit gets into work system through original oil circuit.

This flow control valve provided by the invention, simple in structure, need not original pipeline is carried out large-scale transformation, only need install a bypass tube road additional, this flow control valve is installed, along with variation of temperature, realize flow control.Have at oil under the condition of high temperature of good fluidity, bypass line is closed under the control of flow control valve, does not influence the normal operation of existing equipment, and is convenient and swift, practices thrift cost.

Embodiment of the present invention does not constitute the restriction to the application's scope; Within every spirit in the present invention design and the principle, any modification that one of skill in the art can make, be equal to and replace and improvement etc. all should be included within protection scope of the present invention.

Claims

1. a flow control valve is characterized in that, said flow control valve comprises fitting seat, flip sleeve, temperature transducer, spring and shutoff;

Fitting seat is fixed on the valve port place, and fitting seat has internal thread;

Flip sleeve is a Cylindrical object, and spring housing is at flip sleeve external compression spring,

Temperature transducer is connected with flip sleeve, is installed in the fitting seat with the flip sleeve that has spring;

Shutoff is barrel-shaped, and sidewall has outside thread, be connected with the fitting seat internal thread, temperature transducer since the elastic force effect of spring put and peak in the shutoff.

2. flow control valve according to claim 1 is characterized in that, said flip sleeve one end has shoulder, and spring clip is at shoulder.

3. flow control valve according to claim 2 is characterized in that the other end of said flip sleeve has radial slot.

4. flow control valve according to claim 1 is characterized in that said temperature transducer has push rod, and this push rod is put and peaked at shutoff.

5. flow control valve according to claim 1 is characterized in that, has gasket seal between said shutoff and the connecting base.