CN87204247U

CN87204247U - Relief valve capable of showing the remains of gas

Info

Publication number: CN87204247U
Application number: CN 87204247
Authority: CN
Inventors: 段正香; 刘健德
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-05-22
Filing date: 1987-05-22
Publication date: 1988-04-27

Abstract

The utility model discloses a relief valve capable of showing the remains of gas. The relief valve capable of showing the remains of the gas is suitable to be arranged on the pipeline of a liquefied gas stove. The relief valve capable of showing the remains of the gas is improved on the basis of the existing relief valves. The utility model is mainly characterized in that the center of a relieving valve cap is provided with a pressure display device. When pressure gas enters the relief valve, the remains of the gas can be reflected from the display device. Users can determine gas changing time according to the display conditions of the relief valve. Therefore, the relief valve capable of showing the remains of the gas has the capacities of controlling the pressure and the flow of the gas and displaying the remains of the gas. The utility model has the advantages of simple structure, convenient operation and safety.

Description

Relief valve capable of showing the remains of gas

The utility model relates to a kind of reduction valve, is adapted to be contained on the pipeline of household liquified gas kitchen.

As everyone knows, reduction valve is one of device of household liquified gas kitchen indispensability.It is installed on the pipeline between steel cylinder and the stove, is used for the pressure and the flow of control gaseous.But this valve can not show the storage capacity of gas in the steel cylinder, causes people when cooking, and often owing to gas burnouts unexpected the stopping working of burner and worried, urgent hope has a kind of device of the interior gas reserves of steel cylinder that can show to come reminds people to take a breath on time.For addressing this problem, people have designed different pressure-display devices or warning device, but all are arranged separately on the steel cylinder or on the pipeline, have increased user's the trouble and the cost of kitchen range.

The purpose of this utility model provides a kind of reduction valve that can show the gas surplus.It not only can control gaseous pressure and flow, can show simultaneously the surplus of gas to make things convenient for the user to grasp time of exchanging gas.

Below in conjunction with accompanying drawing the utility model is carried out detailed narration.

Fig. 1 is the structural representation of the utility model pressure testing valve.

Fig. 2 is the schematic representation of pressure display unit among Fig. 1.

Pressure-reducing valve of the present utility model is to improve on the basis of existing pressure-reducing valve to form, and it comprises valve block (11), the formations such as relief spring (12), control lever (18), control link (19), valve gap (1), spring cup (8). This pressure-reducing valve is transformed aspect two. One, valve gap (1) middle part has been designed the step of a protrusion, opened a round thread hole (20) at the center of step, the bottom in hole (20) has the hole (5) that communicates with inlet chamber (21) and the hole (6) that communicates with hole (10), between hole (5) and hole (6), have groove (13), the screwed hole (20) in valve gap (1) On be provided with a display unit. This device is made up of display, nut (14), transparent shell (15) and protective cover (16). Display shows that by showing that mark (2), lower buoy (4), spring (3) form mark (2) is cylinder, is carved with many equidistant display lines (23) and alarming line (24) at its surface one end. Lower buoy (4) is cylinder, and the assembling form of this display is such: spring (3) is arranged on the tube bottom in the lower buoy (4), and demonstration mark (2) one ends insert in the lower buoy (4) spring is covered, as shown in Figure 1, 2. Display is contained in the housing (15), is fixed on nut (14) in the screwed hole (20) of valve gap (1), also is provided with the protective cover (16) with window in the outside of housing (15) in order to prevent collision. Its two, directly enter decompression valve pocket (17) in order to stop pressed gas, a closed screw (7) has been installed in inlet chamber (21), have pore (10) on the screw (7), hole (10) and hole (6), hole (9) consist of gas passage. After pressed gas is entered by inlet chamber (21) like this, enter display unit through via hole (5), groove (13) earlier, just enter then decompression valve pocket (17), emitted by outlet chamber (22).

The decompression principle of the utility model pressure-reducing valve is the same with the operation principle of existing pressure-reducing valve, it shows that surplus device is such: with this valve with after steel cylinder internal pressure gas connects, pressed gas at first enters the display unit on the pressure-reducing valve, under the effect of pressed gas, display is advanced to the top in the housing (15), up move after at this moment descending buoy (4) Compress Spring (3), all put until will show mark (2), lower buoy (4) end face at this moment coexists with the end face that shows mark (2) in the plane; When gas pressure drops to 2kg/cm²The time, lower buoy (4) moves down under the elastic force effect of spring (3), shows that mark (2) also exposes thereupon, can learn the pressure size of gas from showing display line (23) scale of marking on (2); When pressed gas drops to 1kg/cm²The time show that the alarming line (24) of mark (2) exposes, this moment, the user can consider according to own consumption the time of ventilation; When gas pressure is lower than 0.2kg/cm²The time, because the weight of display own overlaps from the bottom that housing (15) inner top drops to screw (20), spring is in free state, shows that the display line (23) on the mark (2) all exposes, and shows at this moment in the steel cylinder that gas seldom. The user is by after once using, and according to display line (23) scale of the demonstration mark (2) of display unit on this pressure-reducing valve, just can determine time of exchanging gas. So reached as mentioned above the purpose that shows gas surplus in the steel cylinder.

The utlity model has the function of decompression and demonstration gas surplus, the user is easy to use, safe, and simple structure is easy to manufacture.

Claims

1, the reduction valve that can show the gas surplus, comprise valve block [11], relief spring [12], control lever [18], control link [19], valve gap [1], adjust plug screw formations such as [8], it is characterized in that valve gap [1] middle part designed the step of a protrusion, opened a round thread hole [20] at the center of step, have the hole [6] that the hole [5] that communicates with air-inlet cavity [21] and hole [10] communicate in the bottom of tapped hole [20], in the hole [5], [6] have groove [13] between, on the tapped hole [20] of valve gap [1], be provided with one by display device, nut [14], transparent shell [15], the display unit that protective housing [16] constitutes has been installed a closed screw [7] in air-inlet cavity [21].

2, reduction valve according to claim 1, it is characterized in that the display device on the said display unit, form by showing mark (2), following buoy (4), spring (3), spring (3) is arranged on down the tube bottom in the buoy (4), show that the insertion of mark (2) one ends in the buoy (4) covers spring down, display device is contained in the housing (15), is fixed on nut (14) in the tapped hole (20) of valve gap (1).

3, reduction valve according to claim 2 is characterized in that the demonstration mark (2) in the said display device is cylindrical body, and its surperficial end is carved with many equidistant display lines (23) and alarming line (24).

4, reduction valve according to claim 1 is characterized in that having on the said closed screw (7) hole (10) that communicates with hole (9), (6).