CN209280072U - A kind of Anti-freezing water meter machine core - Google Patents

Abstract

The utility model relates to a kind of Anti-freezing water meter machine cores, impeller box including gearcase and below gearcase, the gearcase bottom offers the aperture above impeller box, and the aperture is sealed by the movable plate that can be moved up, and the spring for heading on movable plate downwards is provided in the gearcase.The utility model Anti-freezing water meter cassette mechanism structure is novel, and design rationally, can move upwardly so that impeller box inner space increases by movable plate, and to alleviate ice cube to the pressure of impeller box side wall, effective protection impeller box prevents from freezing and impeller box is caused to burst.

Description

A kind of Anti-freezing water meter machine core

Technical field

The utility model relates to a kind of Anti-freezing water meter machine cores.

Background technique

In winter or cold district, the water in running water pipe can freeze, and the water in the impeller box of water meter movement is equally It can freeze, after water build-ups ice, volume becomes larger, and impeller box is easy for explosion damage, and water meter loses function of measuring.

Utility model content

In view of this, can be effectively prevent the purpose of the utility model is to provide a kind of Anti-freezing water meter machine core of structure novel Icing causes impeller box to burst.

The utility model using following scheme realize: a kind of Anti-freezing water meter machine core, including gearcase and be located at gearcase under The impeller box of side, the gearcase bottom offer the aperture above impeller box, and the aperture is by the work that can move up Movable plate seals, and the spring for heading on movable plate downwards is provided in the gearcase.

Further, it is provided with impeller in the impeller box, is sealed on the upside of the gearcase by upper cover, in the movable plate Portion offers the through-hole being upward through for the impeller shaft of impeller；Middle side part has the hollow shaft extended downwardly under upper cover, hollow The peripheral part of axle portion is arranged with the first sealing ring, has on the upside of the through-hole of the movable plate and upwardly extends and cover on hollow shaft Tubular portion.

Further, the movable plate upper edge have close to gearcase inner wall and can opposite ring bodies that it is slided, Cyclic annular outer circumferential portion is arranged with the second sealing ring.

Further, the lower part side of the impeller box offers water inlet, and the top side of impeller box offers water outlet Mouthful, strainer is cased with outside the lower part of impeller box.

Compared with prior art, the utility model has the following beneficial effects: the utility model Anti-freezing water meter cassette mechanism structure Novelty, design rationally, can move upwardly so that impeller box inner space increases, by movable plate to compensate volume after water freezing The space of increase, alleviates pressure of the ice cube to impeller box side wall, and effective protection impeller box prevents from freezing and impeller box is caused to burst.

For the purpose of this utility model, technical solution and advantage is more clearly understood, specific embodiment will be passed through below And relevant drawings, the utility model is described in further detail.

Detailed description of the invention

Fig. 1 is the utility model embodiment sectional view；

Fig. 2 is the utility model embodiment explosive view；

Figure label explanation: 100- gearcase, the aperture 110-, 120- movable plate, 121- through-hole, 122- tubular portion, 123- Ring bodies, the second sealing ring of 124-, 130- upper cover, 131- hollow shaft, the first sealing ring of 132-, 133- third sealing ring, 200- impeller box, 300- spring, 400- impeller, 410- impeller shaft, 500- strainer.

Specific embodiment

As shown in Figure 1 and 2, a kind of Anti-freezing water meter machine core, the impeller box including gearcase 100 and positioned at 100 lower section of gearcase 200,100 bottom of gearcase offers the aperture 110 above impeller box 200, and the aperture 110 is by that can move up Movable plate 120 seal, be provided in the gearcase 100 and head on the spring 300 of movable plate, the water knot in impeller box downwards When ice, since volume becomes larger, movable plate can be by the upward pushing tow of ice, so that impeller box inner space increases, to alleviate ice cube to leaf The pressure of box side wall is taken turns, effective protection impeller box prevents from freezing and impeller box is caused to burst.

In the present embodiment, impeller 400 is provided in the impeller box 200,100 upside of gearcase is by upper cover 130 It seals, the through-hole 121 being upward through for the impeller shaft 410 of impeller 400 is offered in the middle part of the movable plate 120；130 downside of upper cover Middle part has the hollow shaft 131 extended downwardly, and the peripheral part of hollow shaft 131 is arranged with the first sealing ring 132, the activity Have on the upside of the through-hole 121 of plate 120 and upwardly extends and cover the tubular portion 122 on hollow shaft, tubular portion 122 and middle control axle portion Be slidably matched and provide guiding role for the activity of movable plate.

In the present embodiment, 120 upper edge of movable plate have close to gearcase inner wall and can opposite its slide Ring bodies 123, cyclic annular outer circumferential portion are arranged with the second sealing ring 124, and the first sealing ring 132 and the second sealing ring 124 can be protected The leakproofness for demonstrate,proving gearcase inner cavity, prevents water from entering in gearcase.

In the present embodiment, the lower part side of the impeller box 200 offers water inlet, and the top side of impeller box opens up There is water outlet, strainer 500 is cased with outside the lower part of impeller box.

Above-mentioned any technical solution disclosed in the utility model unless otherwise stated, if it discloses numberical range, So disclosed numberical range is preferred numberical range, and any it should be appreciated by those skilled in the art preferred numerical value Range is only the numerical value that technical effect is obvious or representative in many enforceable numerical value.Since numerical value is more, It is impossible to exhaust, so the utility model discloses component values just to illustrate the technical solution of the utility model, also, above-mentioned The numerical value enumerated should not constitute the limitation that protection scope is created to the utility model.

If the utility model is open or relates to the components or structural member of connection fastened to each other, except as otherwise sound It is bright outer, it is fixedly connected it is to be understood that connection (such as using bolt or screw connection) can be removedly fixed, can also manage Solution are as follows: it is non-removable to be fixedly connected with (such as riveting, welding), certainly, connection fastened to each other or integral structure ( Such as manufactured using casting technique is integrally formed) replaced (obviously can not be using except integrally formed technique).

In addition, for indicating positional relationship or shape applied in above-mentioned any technical solution disclosed by the utility model Term its meaning includes approximate with its, similar or close state or shape unless otherwise stated.

Either component provided by the utility model by multiple individual component parts either assembled, or The separate part that integrally formed technique manufactures.

Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it System；Although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should Understand: specific implementation of the utility model can still be modified or is equally replaced to some technical characteristics It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model In range.

Claims (4)

1. a kind of Anti-freezing water meter machine core, the impeller box including gearcase and below gearcase, it is characterised in that: the gear Cassette bottom portion offers the aperture above impeller box, and the aperture is sealed by the movable plate that can be moved up, the gearcase Inside it is provided with the spring for heading on movable plate downwards.

2. Anti-freezing water meter machine core according to claim 1, it is characterised in that: impeller is provided in the impeller box, it is described It is sealed on the upside of gearcase by upper cover, offers the through-hole being upward through for the impeller shaft of impeller in the middle part of the movable plate；Under upper cover Middle side part has the hollow shaft extended downwardly, and the peripheral part of hollow shaft is arranged with the first sealing ring, and the movable plate leads to Have on the upside of hole and upwardly extends and cover the tubular portion on hollow shaft.

3. Anti-freezing water meter machine core according to claim 2, it is characterised in that: the movable plate upper edge has close to tooth It takes turns box inner wall and the second sealing ring can be arranged with respect to the ring bodies of its sliding, cyclic annular outer circumferential portion.

4. Anti-freezing water meter machine core according to claim 1, it is characterised in that: the lower part side of the impeller box offer into The mouth of a river, the top side of impeller box offer water outlet, are cased with strainer outside the lower part of impeller box.