CN2285377Y - Check valve for pumping well - Google Patents

Abstract

The utility model relates to a valve for a manpower pressure well. The sealing performance of the utility model can satisfy the condition that when water is fetched again with twenty-four hours, the water used for extracting the water does not need to be added; the valve body and a valve cover are in screw connection and form a valve cavity; the center of the bottom of the valve body is provided with a water inlet, and the inner bottom of the valve body is successively provided with a sealing washer, an annular glass sheet and a glass valve sheet from top to bottom; the top of the valve cover is provided with a water outlet, and the sealing washer and the annular glass sheet are pressed on the bottom of the valve body. As the annular glass sheet is pressed on the bottom surface of the valve body through the valve cover and the sealing washer is added in the middle, the water inlet can be smoothly and tightly plugged when the glass valve sheet falls on the annular glass sheet, and the water can not flow out from the water inlet; accordingly, the extraction water can be nearly kept for twenty-four hours.

Description

Kill-job ends the Vent valve

The utility model relates to a kind of valve, particularly the one way stop peturn valve used of manpower kill-job.

Middle samll cities and towns and vast rural area generally adopt manpower to obtain the daily life water, the each water intaking of existing kill-job as longer with the time lag of last time water intaking, then need in kill-job, could extrude after a certain amount of diversion of perfusion earlier the water in the well, its reason is that structure such as Fig. 4 are adopted in existing kill-job, safety check shown in Figure 5, it is pressed with the rubber band 16 of a band tongue 13 with trim ring 12 at water intake 15 places of well body 11 bottoms, the tip of the tongue has counterweight 14, when promoting the kill-job piston, upwards dig at the effect sublingua 13 of pressure reduction and to open water intake 15, piston presses down or when static, tongue 13 topped water intake 15 water intakings or diversion realized non-return under the effect of gravity and pressure reduction.Because the tongue 13 that rubber is made is difficult to guarantee that with 11 of castiron well bodies watertight cooperates, existing slowly, Vent leaks, make the storage life of diversion in well generally can not be above 2 hours, cause the situation of adding diversion before the setting-out, in addition, tongue 13 is in the operating mode that constantly rolls up under the lid all the year round, ruptures often.

The purpose of this utility model is a kind of kill valve of design, and its sealing should be able to make kill-job use at every turn at interval that the Vent of diversion leaks seldom in 24 hours, satisfy during this period in once more water intaking do not need to add in addition the needs of diversion, simultaneously, valve has long working life.

For achieving the above object, the utility model adopts following technological scheme, valve body is threaded with valve gap and forms valve pocket, valve body bottom centre is provided with water intake, the end, be equipped with seal washer, ring glass sheet and glass valve block from bottom to top successively in the valve body, and the valve gap top is provided with water outlet and seal washer, ring glass sheet are pressed on the valve body bottom.

The diameter of glass valve block is less than the internal diameter of valve gap and greater than the center bore of ring glass sheet.Valve outer wall has annular groove, and groove is built-in with seal ring.

Owing to adopt valve gap that the ring glass sheet is pressed on the valve body bottom surface and the centre is added with seal washer, and the glass valves sheet can smooth closely shutoff water intake when dropping on the ring glass sheet, water can't be flowed out from water intake, thereby guaranteed that diversion can retain nearly 24 hours

Description of drawings:

Fig. 1 embodiment's plan view;

The A-A sectional view of Fig. 2 Fig. 1;

The scheme of installation of Fig. 3 valve in kill-job;

The plan view of the existing kill valve of Fig. 4;

The B-B sectional view of Fig. 5 Fig. 4.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing, and referring to Fig. 1, seal ring 1 is enclosed within valve body 2 outer rims, and valve gap 4 tops are provided with one group of water outlet 3; Referring to Fig. 2, seal ring 1 lock ring is in the groove of valve body 2 outer walls, valve body 2 heelpieces have seal ring 8 made of rubber and by valve gap 4 ring glass sheet 7 are compressed, and glass sheet 5 freely is shelved on the ring glass sheet 8, and it should be able to cover the whole of water intake 6 and can tiltedly not be stuck in the valve pocket; Referring to Fig. 3, assembly 9 water intakes of valve plug downwards can use in the bottom of well head 10, and the sealing between assembly 9 and the well head 10 is realized by seal ring 1.

Claims (3)

1, kill-job ends the Vent valve, valve body (2) is threaded with valve gap (4), it is characterized in that: valve body (2) bottom centre is provided with water intake (6), the interior end of valve body (2), be equipped with seal washer (8), ring glass sheet (7) and glass valve block (5) from bottom to top successively, and valve gap (4) top is provided with water outlet (3) and seal washer (8), ring glass sheet (7) are pressed on valve body (2) bottom.

2, kill-job according to claim 1 ends the Vent valve, it is characterized in that: the diameter of glass valve block (5) is less than the internal diameter of valve gap (4) and greater than the center bore of ring glass sheet (7).

3, kill-job according to claim 1 and 2 ends the Vent valve, it is characterized in that: valve body (2) outer wall has annular groove, and groove is built-in with seal ring (1).

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