CN204900996U - Flange structure connecting device for valve - Google Patents

Abstract

The utility model relates to a flange structure connecting device for valve, connecting device includes a pair of connection semicircle ring that half -and -half sets up, connect and to have a recess that extends along its circumferencial direction on the inner wall of semicircle ring, and two recesses of connecting on two back inner walls of semicircles ring concatenation constitute the cavity that holds the embedding of two flange end excircles jointly, the both sides tip position of connecting the semicircle ring all has a fixed part, has one and hold the bolt through -hole that the bolt passed on the fixed part, and a connecting bolt passes and lies in two and connect the semicircles ring with behind the bolt through -hole on two fixed parts of one end, and its both ends are all tightened fixedly through coupling nut. The utility model has the advantages of: connect the semicircle through two and encircle the butt clamp, accomplish the fastening to two flange to two bolts tight two are connected the semicircles ring and in order evenly to compress tightly the gasket, are realized reliable sealing up, the utility model discloses simple structure, handling ease, low in manufacturing cost.

Description

A kind of valve flange structural couplings

Technical field

The utility model relates to a kind of valve, particularly a kind of valve flange structural couplings.

Background technique

At present, for the valve that there is with some the mesolow valve of flange arrangement, connecting end form is flange, its flange arrangement, when connecting, according to designing requirement or the symmetrical multiple bolt hole of relevant criterion on flange, is bolted two flanges, bolt is tightened in turn by rule symmetrically and evenly, attention can not overtorquing, in order to avoid damage pad by pressure, is generally as the criterion to be screwed to not leak, finally need control flange gap, its gap should be consistent.

For said structure when connecting flange, there is following defect: the first, flange need process multiple bolt hole, adds and need use special bushing plate man-hour, manufacture cost is high, processed complex; The second, repeatedly need tighten in turn by rule symmetrically and evenly when connecting bolt is fastening, to ensure between two flanges that gap is consistent, assembling difficulty is large, such as, Figure 1 shows that 18 "-300Lb valve end flange bolt tighten precedence diagram; 3rd, after a long time use, bolts and nuts easily become rusty extremely valve, valve dismounting and difficulty of disintegrating; 4th, for meeting the demand of bolt and nut connection to installing space, product cost increases.

Model utility content

The technical problems to be solved in the utility model is to provide a kind of valve flange structural couplings, uniform stressed when flange can be made to assemble, and automatically ensures that its gap is consistent, effectively realizes sealing, and solution assembling difficulty is large, the problem of processed complex.

For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of valve flange structural couplings, described flange arrangement is made up of two adpting flanges, also pad is installed between two adpting flanges, two adpting flanges are connected by connection set, and its innovative point is: described connection set comprises a pair connection semicircular ring arranged half;

The inwall of described connection semicircular ring has a groove extended along its circumferencial direction, and two connect the cavity that the semicircular ring groove spliced on latter two inwall forms appearance two adpting flange ends embeddings jointly;

The both side ends position of described connection semicircular ring all has a fixing part, fixing part has the bolt hole that an appearance bolt passes, one connecting bolt connects semicircular ring with after the bolt hole on two fixing parts of one end through being positioned at two, and its two ends are all tightened fixing by attaching nut.

Further, the groove of described connection semicircular ring inwall is wedge shape, and is provided with at the circumference cylindrical of two adpting flanges and corresponding with groove carves angle.

The utility model has the advantage of: in the utility model, semicircular ring is connected to folder by two panels, what complete two adpting flanges is fastening, and two bolts and tight two connect semicircular ring with even compress gasket, uniform stressed during two flange assemblings, automatically ensure that its gap is consistent, effectively realize sealing, solve the problem that assembling difficulty is large; The utility model makes the dismounting of valve or disintegrates compared with prior art, and workload can be fallen and is several times lower than tens times; Placement of the present utility model is reliable, and less to requirements of installation space; The utility model structure is simple, be convenient to processing, low cost of manufacture.

Be wedge shape by the groove design that will connect semicircular ring inwall, the outer of two adpting flanges is designed to corresponding carve angle, when assembling, can realize automatic alignment, and ensure that connecting semicircular ring has enough decrements to two adpting flanges when compressing.

Accompanying drawing explanation

Fig. 1 is original technology 18 "-300Lb valve end flange bolt tighten precedence diagram.

Fig. 2 is the schematic diagram of valve flange structural couplings of the present utility model.

Fig. 3 is the scheme of installation of connection set of the present utility model.

Fig. 4 is the A portion enlarged view of Fig. 3.

Embodiment

Schematic diagram is as shown in figs 2-4 known, valve flange arrangement of the present utility model is made up of two adpting flanges, be respectively adpting flange 41, lower adpting flange 43, between upper adpting flange 41, lower adpting flange 43, pad 42 is also installed, is connected by connection set between upper adpting flange 41, lower adpting flange 43.

Schematic diagram is as shown in Figure 2 known, connection set comprises a pair connection semicircular ring 34 arranged half, the inwall connecting semicircular ring 34 has a groove 35 extended along its circumferencial direction, and two connect semicircular ring 34 and splice groove 35 on latter two inwall and jointly form the cavity holding upper adpting flange 41 and lower adpting flange 43 cylindrical and embed.

Connect the groove 35 of semicircular ring 34 inwall in wedge shape, and be provided with at the circumference cylindrical of upper adpting flange 41 and lower adpting flange 43 and corresponding with groove 35 carve angle.

In the both side ends position connecting semicircular ring 34, all there is a fixing part 31, fixing part 31 has the bolt hole that an appearance bolt passes, one connecting bolt 33 connects semicircular ring 34 with after the bolt hole on two fixing parts 31 of one end through being positioned at two, and the two ends of connecting bolt 33 are all tightened fixing by attaching nut 32.

Working principle: when being fixed the flange arrangement in valve, the outer end that semicircular ring 34 is enclosed within upper adpting flange 41 and lower adpting flange 43 is respectively connected by two, and in the groove 35 that the end of adpting flange 41 and lower adpting flange 43 is embedded on connection semicircular ring 34 inwall, simultaneously, in utilization adpting flange 41 and lower adpting flange 43 end carve angle and wedge shape groove 35 carries out automatic alignment, also ensure that have enough decrements and adjustment surplus to pad 42 simultaneously, two two ends connecting semicircular ring 34 connect respectively by a connecting bolt 33, upon connection, the two ends of connecting bolt 33 are tightened respectively by a nut 32, in the process that nut 32 is tightened, the dependence of two connection semicircular ring 34 is carved angle and is shunk inward, in even clamping, adpting flange 41 and lower adpting flange 43 are with compression gasket 42, realize sealing reliably.

The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (2)

1. a valve flange structural couplings, described flange arrangement is made up of two adpting flanges, also be provided with pad between two adpting flanges, two adpting flanges are connected by connection set, it is characterized in that: described connection set comprises a pair connection semicircular ring arranged half;

The inwall of described connection semicircular ring has a groove extended along its circumferencial direction, and two connect the cavity that the semicircular ring groove spliced on latter two inwall forms appearance two adpting flange ends embeddings jointly;

The both side ends position of described connection semicircular ring all has a fixing part, fixing part has the bolt hole that an appearance bolt passes, one connecting bolt connects semicircular ring with after the bolt hole on two fixing parts of one end through being positioned at two, and its two ends are all tightened fixing by attaching nut.

2. valve flange structural couplings according to claim 1, is characterized in that: the groove of described connection semicircular ring inwall is wedge shape, and is provided with at the circumference cylindrical of two adpting flanges and corresponding with groove carves angle.