CN2336158Y - Gas pipeline multiple-way valve - Google Patents

Abstract

The utility model discloses a gas pipeline converter used in a lab, which is characterized in that the converter is provided with gas by-pass pipe outer sheaths of which both sides are respectively provided with an air inlet hole and an air outlet hole, and movable inner cores, wherein each movable inner core is positioned in each outer sheath, the front part of each movable inner core is provided with an L-shaped lateral venthole, and the middle part is provided with a radial venthole. The two gas by-pass pipe outer sheaths are connected by a gas through pipe, and one side of each movable inner core can be communicated with a gas collecting device or a gas demonstrating device. When the movable inner cores are positioned in different positions, the gas pipes are respectively in a through state and in a current state by the L-shaped lateral ventholes. The utility model can prevents gas from leaking outwards, and is favorable for environmental protection and good health of teachers and students. The utility model has the advantages of simple structure, convenient use, good effect and low cost.

Description

A kind of gas piping transducer

The utility model relates to a kind of breadboard gas piping converter that can change the gas communication pipeline that is used for.

Now, when school duty room carries out the experiment of toxic gas, change the gap that collection gas container or gas reaction apparatus for demonstrating are extracted rubber tube, gas piping is in outside circulation status, and toxic gas escapes easily, is unfavorable for that environment and teachers and students are healthy.Lack at present and a kind ofly can prevent the gas piping converter that toxic gas escapes effectively when gas container or gas reaction apparatus for demonstrating are changed when collecting.

The purpose of this utility model provides and a kind ofly can prevent the gas piping transducer that toxic gas escapes effectively when collection body gas container or gas reaction apparatus for demonstrating are changed.

The utility model is achieved in that a kind of gas piping transducer, comprise the suction port that links to each other with the gas outlet pipe with external gas inlet pipe road respectively, the air outlet, its characteristics are: also have both sides to have inlet hole, the gas bypass suction tude overcoat of air outlet hole and gas bypass steam outlet pipe overcoat, and lay respectively at the movable inner core of the gas bypass pipe with overcoat close fit symmetry in the above-mentioned overcoat, between suction port and the gas bypass suction tude overcoat one side inlet hole, between air outlet and the gas bypass steam outlet pipe overcoat one side air outlet hole respectively with being threaded, and be equipped with seal ring, between the air outlet hole of gas bypass suction tude overcoat opposite side and the inlet hole of gas bypass steam outlet pipe overcoat opposite side with the gas straight pipe by being threaded, and be equipped with seal ring, the movable inner core of gas bypass pipe front portion has L shaped side direction vent, the middle part has and can connect outer packing into, the radially vent of air outlet hole, the rear portion is installed on handle, the overcoat inlet hole, air outlet hole and movable inner core joint are equipped with seal ring.

Above-mentioned a kind of gas piping transducer, its characteristics are: the movable inner core of described gas bypass pipe is installed in the overcoat by screw thread.

Above-mentioned a kind of gas piping transducer, its characteristics are: described suction port, air outlet, overcoat, movable inner core adopt polytetrafluoroethylplastic plastic to make.

The utility model can be fixed on transducer on the demonstrator with the front and back dividing plate when using, only need advancing the gas piping transducer, the air outlet respectively with the gas generator in when experiment, the gas device for recovering tail gas links to each other by rubber tube, with advancing of gas collection vessel or gas reaction apparatus for demonstrating, the air outlet links to each other with an end of two movable inner cores respectively, when drawing when pushing away movable inner core or rotary moveable inner core, can be with gas collection vessel or gas reaction apparatus for demonstrating the gas port that follows up respectively of the L shaped side direction vent by movable inner core respectively, the air outlet communicates, and gas can successfully be entered, discharge.When finishing or test, the gas collection finishes, oppositely push-and-pull activity inner core or rotary moveable inner core make the radially vent and the gas straight-through tube that are in by movable inner core directly be communicated with suction port and air outlet, the L shaped side direction vent that leads to gas collection vessel or gas reaction apparatus for demonstrating cuts off automatically, make unnecessary gas automatically backward the one-level relief opening carry or directly enter absorption liquid.In whole experiment, owing to gas moves in closed system, the purity height, experimental phenomena is obvious, can prevent that again gas from escaping simultaneously, when reaction gas is toxic gas, just plays preventing that toxic gas from endangering environment and teachers and students are healthy.This product is used for the laboratory, has advantage simple in structure, easy to use, effective, that cost is low.

Further specify below in conjunction with drawings and Examples:

Schematic representation when Fig. 1 is the utility model lateral communication,

Schematic representation when Fig. 2 is the utility model radial communication.

As shown in Figure 1, a kind of gas piping transducer, comprise the suction port 1 that links to each other with the gas outlet pipe with external gas inlet pipe road respectively, air outlet 23, also have both sides to have inlet hole 3, air outlet hole 4 and inlet hole 10, the gas bypass suction tude overcoat 2 of air outlet hole 11 and gas bypass steam outlet pipe overcoat 9, and lay respectively at the movable inner core 17 of the gas bypass pipe with the overcoat close fit in the above-mentioned overcoat, 18, between suction port 1 and the gas bypass suction tude overcoat 2 one side inlet holes 3, between the air outlet hole 11 of air outlet 23 and gas bypass steam outlet pipe overcoat 9 one sides respectively with being threaded, and be equipped with seal ring 5,15, between the air outlet hole 4 of gas bypass suction tude overcoat 2 opposite sides and the inlet hole 10 of gas bypass steam outlet pipe overcoat 9 opposite sides with gas straight pipe 16 by being threaded, and be equipped with seal ring 8,12, for installing, take apart conveniently, the gas straight pipe can be divided into, following two sections, between use the rubber tube socket, the movable inner core 17 of gas bypass pipe, 18 front portions have L shaped side gas vent 19,20, the middle part has and can connect outer packing into, air outlet hole 3 and 4 and the radially vent 21 of 1O and 11,22, but the rear portion mounting knob packs into outward, air outlet hole and movable inner core joint are equipped with seal ring 6,7 and 13,14.

Above-mentioned suction port, air outlet, overcoat, movable inner core can adopt different materials to make, as plastics, pottery, rubber, glass make all can, be good to adopt polytetrafluoroethylmaterial material especially, such material does not change for severe corrosive materials such as chlorine.

During use, this gas piping transducer can be fixed on the demonstrator with the front and back dividing plate, suction port is communicated with gas generator, the air outlet is communicated with tail gas collecting device or subordinate's container, also this gas piping transducer several can be linked to be use together.Gas collection vessel or gas reaction apparatus for demonstrating is continuous with a side of the movable inner core of one group of gas bypass pipe of the present utility model, movable inner core and overcoat shape can be cylindrical also can be square, the move mode of movable inner core in overcoat can be push-and-pull or rotary, cylindrical when being shaped as, can make screw-thread fit becomes rotary.Push-and-pull or rotary moveable inner core, can make movable inner core be in L shaped side direction vent 19,20 respectively with inlet hole 3, air outlet hole 11 connected states, gas can enter gas collecting device or gas reaction apparatus for demonstrating smoothly.When reverse push-and-pull or rotary moveable inner core, can make movable inner core be in the radially inlet hole 3 and exhaust port 4 of vent 21,22 connection gas bypass suction tude overcoats 2, and the inlet hole 10 and exhaust port 11 of gas bypass steam outlet pipe overcoat 9, gas can directly enter next stage container or gas device for recovering tail gas.Use for convenient, can arrive above-mentioned two states when making push-and-pull or rotary moveable inner core fast, can on movable inner core, set up screens ring and so on thing or put on markings in two ends, make movable inner core be on the screens ring position or during the markings position, be in above-mentioned two states corresponding to the position of overcoat.

Because this product is equipped with seal ring, gas move a locking system, and minimizing escapes chance, for making the seal ring sealing effect better, and L shaped vent 19, the 20 and radially aperture of vent 21,22 should be less than the aperture of inlet hole, exhaust port.

Claims (3)

1, a kind of gas piping transducer, comprise the suction port that links to each other with the gas outlet pipe with external gas inlet pipe road respectively, the air outlet, it is characterized in that: also have both sides to have inlet hole, the gas bypass suction tude overcoat of air outlet hole and gas bypass steam outlet pipe overcoat, and lay respectively at the movable inner core of the gas bypass pipe with overcoat close fit symmetry in the above-mentioned overcoat, between suction port and the gas bypass suction tude overcoat one side inlet hole, between air outlet and the gas bypass steam outlet pipe overcoat one side air outlet hole respectively with being threaded, and be equipped with seal ring, between the air outlet hole of gas bypass suction tude overcoat opposite side and the inlet hole of gas bypass steam outlet pipe overcoat opposite side with the gas straight pipe by being threaded, and be equipped with seal ring, the movable inner core of gas bypass pipe front portion has L shaped side direction vent, the middle part has and can connect outer packing into, the radially vent of air outlet hole, the rear portion mounting knob, the overcoat inlet hole, air outlet hole and movable inner core joint are equipped with seal ring.

2, a kind of gas piping transducer according to claim 1, it is characterized in that: the movable inner core of described gas bypass pipe is installed in the overcoat by screw thread.

3, a kind of gas piping transducer according to claim 1 and 2 is characterized in that: described suction port, air outlet, overcoat, movable inner core adopt polytetrafluoroethylplastic plastic to make.

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