CN2341142Y

CN2341142Y - Controllable continuous batching gas sampler

Info

Publication number: CN2341142Y
Application number: CN 98203548
Authority: CN
Inventors: 杨洪新
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-21
Filing date: 1998-04-21
Publication date: 1999-09-29
Anticipated expiration: 2008-04-21

Abstract

The utility model relates to a controllable continuous quantitative gas sampler which is mainly used for the field measurement of the downhole gases of mines in a detector tube method. The utility model is composed of a gas cylinder (4), a piston (5), a bearing (6), a threaded rod (7), a screw pin (9), a handle (10), a deflection ring (12), etc. The utility model is characterized in that the utility model is provided with a set of screw systems and a deflection mechanism. The screw systems are utilized to realize the quantitative sampling of the suction piston at a uniform speed, and meanwhile, the deflection mechanism is matched to realize the quick-return characteristic of a gas production mechanism; therefore, the gas production operation is more convenient, accurate and rapid, the result of quantitative analysis can be achieved, and cost can be remarkably reduced.

Description

A kind of controllable type continuous and quantitative gas sampler

The utility model relates to mechanical, particularly a kind of controllable type continuous and quantitative gas sampler.

As everyone knows, the harmful poisonous gas of down-hole, mine, can carry out on-the-spot fast quantification with gas fast measuring instrument detects, but, because this type of detecting instrument is very expensive, and main detection part needs periodic replacement, thereby it is higher to detect cost, China all adopts the detector tube method to carry out the mine gas on-site measurement in most of mines at present, because common sampling thief is difficult to realize at the uniform velocity quantitative sampling when manual, can only accomplish half-quantitative detection, the precision of its detection is difficult to guarantee, because according to the requirement of detector tube determination method, if gather 100 milliliters gas, should in the time about 100 seconds, finish, during manual operations, then be difficult to reach this requirement, because piston and connecting rod all armrest are moving, it is slided in cylinder and axis hole, because the kinetic force of friction of the stiction that the speed of sliding is very low when beginning to slide when sliding is big, in order to make its motion, at first must impose bigger power and overcome stiction, as long as be difficult to keep the piston uniform motion once sliding, and also be difficult to reach the sampling flow requirement of 1 milliliters/second, the accuracy of number of samples and sample rate is relatively poor, and this is the shortcoming that the operation of manual directly pull is difficult to overcome, because the quantity and the flow of sampling are inaccurate, will have influence on the precision of detector tube analytic approach check toxic and harmful.

The purpose of this utility model is exactly the shortcoming that exists at above-mentioned common sampling thief, provides a kind of controllable type to connect the quantitative gas sampling thief, has solved the problem that sampling thief is taken a sample at regular time and quantity, and improves the accuracy of sampling.

The technical solution of the utility model:

According to the purpose of this utility model, provide a kind of controllable type to connect the quantitative gas sampling thief, its scheme is the spiral system of design one cover control piston stroke, and making its pitch is 1mm, and the cross-sectional area of cylinder is 1000mm ²By a miniature bearing cylinder and spiral connecting rod are joined, get when the displacement ring and to put full when position, three spiral pins are by in the jacking hole, and forming a screw, the spiral connecting rod can rotate in screw, at this moment, whenever handle rotates a circle, piston is with regard to mobile 1mm, and the volume of cylinder just increases 1mL, as long as the angular velocity of joystick is the sampling flow requirement that week/s just can satisfy 1mI/s, in order to reach the sampling of continuous several times ground, modified gear with quickreturn characteristics of the ad hoc meter of this spiral system is when needing exhaust, as long as rotate the displacement ring, allow the displacement ring be in the room, spiral pin is return and is made screw become unthreaded hole, and connecting rod just can slide in the hole, can rapidly piston be returned to initial position, after again the displacement ring being resetted, wait for sampling next time.

Accompanying drawings structure of the present utility model and embodiment:

Fig. 1 is a cross-sectional schematic of the present utility model.

Fig. 2 is a screw mechanism of the present utility model working position cross-sectional schematic.

Fig. 3 is a non-helical mechanism of the present utility model working position cross-sectional schematic.

(1) be that detector tube, (2) are that bearing, (7) for screw rod, (8) for spring, (9) for spiral pin, (10) for handle, (11) be nut, (12) for displacement ring, (13) for axle sleeve, (14) for little air valve, (15) for piston ring, (16) be atmos-valve for cylinder, (5) for piston, (6) for end cap, (4) for O-ring seal, (3).

Shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, the utility model namely is made of screw rod (7), handle (10), piston (5), bearing (6), little air valve (14), the piston ring (15) of pitch by 1mm a spiral system that overlaps the control piston stroke, and the cross-sectional area of cylinder (4) is 1000mm², by piston (5), miniature bearing (6) cylinder (4) and screw rod (7) are joined, when Displacement ring (12) is got and is put full when position, and three spiral pins (9) are by in the jacking hole, and forms a screw, Screw rod (7) can rotate in screw, and whenever handle (10) one week of rotation, piston (5) is just mobile 1mm, the volume of cylinder (4) just increases 1mI, as long as the revolution of joystick just can satisfy and adopt The sample traffic requirement, as shown in Figure 2, in order to reach the sampling of continuous several times ground, at spiral Be provided with a modified gear with quickreturn characteristics in the system, in the time that exhaust need to being taken a sample again, only Rotate displacement ring (12), allow displacement ring (12) be in the room, under the effect of spring (8), Spiral pin (9) is return, and makes screw become unthreaded hole, and screw rod (7) just can slide in unthreaded hole, gas from Discharge in the little air valve (14), can rapidly piston be return initial position, again the displacement ring is resetted After, wait for next time sampling; Be provided with atmos-valve (16) in the front end inboard of cylinder (4), Its arranged outside end cap (3), sealing ring (2), be provided with in the rear end of its cylinder (4) axle sleeve (13), Displacement ring (12), nut (11).

Accompanying drawing 3 explanations embodiment of the present utility model in conjunction with the accompanying drawings 1:

As shown in Figure 2, diagrammatic cross-section during for the utility model screw mechanism working position, earlier detector tube (1) is inserted in the O-ring seal (2) during use, the ring of turn displacement then (12), three spiral pins (9) are by in the jacking hole, form a screw, screw rod (7) can rotate in screw, whenever handle (10) rotates a circle, gas enters in the cylinder (4) through atmos-valve (16), piston (5) is with regard to mobile 1mm, and the volume of cylinder (4) just increases 1mI, as long as the revolution of joystick (10) just can satisfy the sampling flow requirement, reach the sampling of continuous several times ground, make the detection of detector tube (1) accurate, fast, when needing exhaust, as long as rotate displacement ring (12), allow displacement ring (12) be in the room, spiral pin (9) is return, and makes screw become unthreaded hole, and screw rod (7) just can slide in unthreaded hole, gas is discharged through little air valve (14), piston (5) returns to initial position rapidly, after displacement ring (12) being resetted, waits for sampling next time again.

The utility model is simple in structure, easy to operate, determination and analysis reliable results, accurate.

Claims

1, a kind of controllable type continuous and quantitative gas sampler, it is by the special spiral system of a cover realize bleeding the at the uniform velocity quantitative sampling of piston, be equipped with special modified gear simultaneously, realize the quickreturn characteristics of gas production mechanism, it is characterized in that the spiral system of throw of poston promptly is made of screw rod (7), handle (10), piston (5), bearing (6), little air valve (14), the piston ring (15) of a constant pitch; The cross-sectional area of cylinder (4) is 1000mm ², the pitch of screw rod (7) is 1mm, is provided with atmos-valve (16) in the front end inboard of cylinder (4), at its arranged outside end cap (3) and O-ring seal (2), is provided with axle sleeve (13), displacement ring (12), nut (11) in the rear end of its cylinder (4); Go up sheathed piston ring (15) at piston (5), piston (5) joins by miniature bearing (6) and screw rod (7), and piston (5) is driven in cylinder (4) by screw rod (7) and slides.