CN2055212U - Temp. controlled automatic flow control valve - Google Patents

Abstract

The utility model relates to a temperature controlled automatic flow control valve capable of replacing an automatic flow control system which is composed of a thermosensitive element, a secondary amplifying meter and an electromagnetic valve. The utility model mainly comprises an inflow pipe, a valve body and a valve core, wherein, the valve core is composed of two parts of a valve part and a spiral metal ring. When the spiral metal ring is influenced by fluid temperature, the opening and the closing of the valve can be automatically controlled, and the magnitude of the opening and the closing can be controlled. The temperature controlled automatic flow control valve has the advantages that assistant power and a secondary meter are not required, and industrial water can be saved. When the utility model is used for the automatic flow control of cooling water in a thin oil lubricating device, oil in an oil tank can be transported to lubricating points of equipment under the condition that temperature difference is only +-1DEG. C. The utility model also has the advantages of simple structure, high reliability and low cost.

Description

Temp. controlled automatic flow control valve

The utility model belongs to the automatic flow modulating valve in control, the regulation technology field.

At present, in the thin oil lubricating device of metallurgical and heavy machinery, the cooling water that circulating lubrication and unstable temperature fluid are cooled off, its Flow-rate adjustment and the control of oil liquid temperature is achieved in that in the fluid that is cooled thermosensitive element is set, temperature variation by fluid causes that the curtage signal changes in the circuit of thermosensitive element place, amplify instrument through secondary again and go control executing mechanism---the action of solenoid valve, by the logical of electromagnetic valve cooling water and disconnected, finish temperature control to fluid with this.This automatic flow control system is to rely on electric variable and the common realization of solenoid valve, and its deficiency is: 1. solenoid valve can only present the switching two states, thereby fluid is sent under the state of temperature indention curvilinear motion often.2. thermosensitive element, secondary meter and solenoid valve are malfunctioning sometimes unavoidably, and occur thus that cooling water interrupts and oil liquid temperature is too high, cause the damage accident of main process equipment, cause heavy economic losses.

The purpose of this utility model is the deficiency that overcomes above-mentioned automatic flow control system, and a kind of temp-control type automatic flow modulating valve by the directly automatic regulated fluid flow of temperature-sensing element is provided.

The technical solution of the utility model is: to having valve body, the flow control valve of spool and influent stream pipe improves, making valve body is that an inwall has the cylindrical shell that has fluid output on conical surface (or cylndrical surface) and the wall, the other end of valve body is equipped with valve gap or is has the end cylinder-shaped, spool partly is made up of valve and spirality metal circle two, valve is that an outer wall has the cylindrical shell that has fluid output on conical surface (or cylndrical surface) and the wall, one end of valve is connected with an end of spirality metal circle or makes one, and the other end of spirality metal circle is connected with valve body or influent stream pipe.The spirality metal circle can be made by bimetallic material or memory alloy.

Preferably the inwall of valve body and the outer wall of valve are processed into conical surface, be threaded and/or use the screw tightening valve body upper end-hole and influent stream are effective simultaneously, be convenient to adjustment like this, improve the degree of regulation of flow control valve matching gap between the conical surface of valve body and valve.

The utility model is owing to introduced temperature-sensing element---with the spirality metal circle of bimetallic material or memory alloy manufacturing, thereby can be by the temperature variation that flows to fluid, cause the spirality metal circle to rotate a certain angle, drive valve opening, close, transfer greatly and turn down, reach purpose the Flow-rate adjustment of effluent fluid.

Advantage of the present utility model is that it does not need auxiliary power, does not also need secondary meter and solenoid valve, just can utilize the flow of the automatic regulated fluid of temperature variation of fluid.It is when being used for cooling water that thin oil lubricating device cools off circulation fluid and carrying out Flow-rate adjustment, can change along with change the cooling water temperature that causes owing to oil liquid temperature, automatic rotating valve, regulate the flow of cooling water, make fluid in the fuel tank have only ± be transported under 1 ℃ the situation each lubricating point of equipment in the temperature difference, and make simple in structure, the reliability raising of automatic flow control system in the thin oil lubricating device, also reduced cost, further saved industrial water.

The utility model also can be used for the temp-control type automatic flow of other industrial fluids (liquid or gas) to be regulated, and the cooling water automatic flow that is used for oily temperature control in for example various machine tool hydraulic systems is regulated.

The embodiment who provides below in conjunction with accompanying drawing is further described specifically structure of the present utility model.

Fig. 1 is a kind of cooling water flow temp-control type automatic flow modulating valve example structure schematic representation control, that have upper and lower valve casing that is used for.

Fig. 2 is the A-A cutaway view Amplified image of Fig. 1.

Fig. 3 is after spool turns over an angle clockwise among Fig. 2, valve when modulating valve is in the flow maximum rating and valve body relative position schematic representation.

Fig. 4 is after spool turns over an angle counterclockwise, spool when modulating valve is in closed condition and valve body relative position schematic representation.

As shown in Figure 1, temp-control type automatic flow modulating valve mainly is made up of influent stream pipe (1), valve body (2) and spool (4).Be convenient to discharging in order to make cooling water, the influent stream pipe (1) of present embodiment all is welded into one with last valve casing (10) with outflow tube (9), following valve casing (8) is connected (or directly being threaded) with last valve casing (10) with bolton, forms the single channel valve casing that has only a water inlet and a water out.One end of one end of influent stream pipe (1) and valve body (4) is with being threaded, and uses the screw tightening, and the other end of valve body (2) is the end cylinder-shaped (or valve gap is housed).Valve body (2) is that an inwall has the cylindrical shell that has fluid output (8) on conical surface and the wall.Spool (4) is made up of spirality metal circle (3) and valve (5) two-part, spirality metal circle (3) is made by bimetallic material, valve (5) is that an outer wall has the cylindrical shell that has fluid output (6) on conical surface and the wall, one end of one end of valve (5) and spirality metal circle (3) is made one, the other end port of valve (5) can be the opening shape, also can be the shape of remaining silent.The other end of spirality metal circle (3) and influent stream pipe (1) load can be drive fit, the bonding or alternate manner connection of also available binder.

As Fig. 1,2,3, five equilibrium ground on the wall of valve body (2) (or not five equilibrium ground) has some (for example 24) fluid outputs (7), on the wall of valve (5) also five equilibrium ground (or not five equilibrium but accordingly) have some (for example 24) fluid outputs (6).Fluid output (6,7) can be long trough, also can rounded or other shape.

As Fig. 1, after cooling water enters the inner chamber of spool (4) by the inlet of influent stream pipe (1), flow out through fluid output (6) on the valve (5) and the fluid output (7) on the valve body (2), because modulating valve is that draining conveniently is provided with upper and lower valve casing, so cooling water from fluid output (7) outflow, through the inner wall edge rising of valve casing (8) down, discharge through the outlet of outflow tube (9) again.When the temperature of the cooling water that enters influent stream pipe (1) raises, the variation of water temperature can cause temperature-sensing element--spirality metal circle (3) temperature distortion, drive valve (5) by angle of Fig. 2 position clockwise direction rotation, arrive Fig. 3 position, make the passage between the fluid output (7) of the fluid output (6) of valve (5) and valve body (2) become big, thereby make the flow of cooling water transfer big automatically.Otherwise when the temperature of cooling water reduces, the fluid output (6) that then can make valve (5) and passage between the fluid output (7) of valve body (2) diminish until closing (see figure 4), thereby the flow of cooling water is turned down automatically until being zero.

Above-mentioned temp-control type automatic flow modulating valve, it when being used for thin oil lubricating device the water-cooling tube water outlet that is installed in fuel tank, need be controlled at the requirement of a certain temperature range (for example 30 ℃---40 ℃) according to oily temperature, then when oil temperature during greater than upper limiting temperature (for example 40 ℃), this valve is in the peak rate of flow state automatically, when oil temperature during less than lower limit temperature (for example 30 ℃), this valve is in closed condition automatically.Its reason is, the variation of oil temperature can influence conversely that the water temperature in the water-cooling tube changes in the fuel tank, and then has influence on the variation of interior the water temperature of spool (4), causes the automatic adjusting to cooling water self flow, realizes conversely again oil warm adjusting and control.Suppose that valve (5) is originally for closing (being inside and outside fluid output (6,7) poor opening mutually), then when oily temperature rise raises the cooling water temperature that enters flow control valve, valve (5) just turns over an angle automatically, make inside and outside fluid output (6,7) form path, cooling water is flowed away in a large number, take away heat, cause the oil temperature to descend rapidly.Recover normal when the oil temperature, then the water temperature in the spool (4) can make spirality metal circle (3) return to a certain normal position, causes valve (5) to be in the state of slightly opening.When the oil temperature was low excessively, then water temperature made valve (5) be in closed condition.When oily temperature raises once more, then water temperature makes valve (5) reopen again.Continuous and so forth, then can make lubricant oil require to be transported to each lubricating point with normal oil temperature.This valve can reduce by 2/3 than the cost of the automatic flow control system in the existing thin oil lubricating device, and reliability but improves, and the life-span greatly prolongs, and can also save industrial water in a large number.

The utility model can produce the product of various different sizes according to different temperature ranges and flow adjustment range when implementing, to be fit to the needs of various use occasions. Simultaneously, valve casing can also be made existing two influent stream mouths has again two to go out head piece (for example a water inlet and an oil inlet, add a water out and an oil export), and two fluid passages (such as aquaporin and oily passage) isolate mutually other shapes such as binary channels valve casing that produce mutually temperature effect.

Claims (4)

1, a kind of temp-control type automatic flow modulating valve has valve body (2) and spool (4), and an end of valve body (2) is connected with influent stream pipe (1), it is characterized in that:

A, valve body (2) are that an inwall has conical surface or cylndrical surface, and have the cylindrical shell of fluid output (7) on the wall, and the other end of valve body (2) is equipped with valve gap or is has the end cylinder-shaped;

B, spool (4) are made up of valve (5) and spirality metal circle (3) two-part, valve (5) is that an outer wall has conical surface or cylndrical surface, and have the cylindrical shell of fluid output (6) on the wall, an end of valve (5) is connected with an end of spirality metal circle (3) or makes one;

The other end of c, spirality metal circle (3) is connected with valve body (2) or influent stream pipe (1);

D, spirality metal circle (3) are made by bimetallic material or memory alloy.

2, flow control valve according to claim 1 is characterized in that: valve body (2) upper end-hole and influent stream pipe (1) are with being threaded and using screw tightening, the other end of spirality metal circle (3) and influent stream pipe (1) drive fit or bonding with binder.

3, flow control valve according to claim 1 and 2 is characterized in that: the fluid output (6,7) on valve body (2) and the valve (5) can be long trough, also can be rounded.

4, flow control valve according to claim 1 and 2, it is characterized in that: be provided with upper and lower valve casing, influent stream pipe (1) all is welded into one with last valve casing (10) with outflow tube (9), and following valve casing (8) is connected with bolton with last valve casing (10) or directly is threaded.

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