CN2679452Y - Combined filler - Google Patents

Abstract

The utility model provides a combined filler composed of an upper filler, two or three middle filler and a lower filler press. The utility model is characterized in that the middle filler is in a V-shaped structure; two or three middle fillers are overlapped; the upper filler is arranged at the upper part of the middle fillers and the lower filler is arranged at the lower part. The beneficial effect of the utility model is that the utility model adopts combined fillers and the V-shaped structure has a self sealing action The utility model has the advantages of simple structure, low cost and reliable seal.

Description

Combined stuffing

Affiliated technical field

The utility model relates to a kind of combined stuffing, belongs to field of sealing technology.

Background technique

The sealing configuration of the valve shaft of the present employed butterfly valve of metallurgy industry, mainly adopt the Expanded graphite of in stuffing box, putting into 4 to 5 ring-types, compress, reach sealing effect by the distortion of Expanded graphite with Gland, but, easily leak at the filler place in the higher occasion of pressure.

Summary of the invention

In order to overcome the deficiency that the packing seal of butterfly valve shaft place is easily leaked in the higher occasion of pressure, the utility model provides a kind of combined stuffing, have self-packing effect,, solved the seal leakage problem at valve shaft place effectively particularly in the higher occasion of pressure medium.

The technological scheme that its technical problem that solves the utility model adopts is, a kind of combined stuffing, go up filler by 1,2 to 3 middle fillers, 1 following filler is pressed and is formed, wherein middle filler forming V-shape structure, 2 to 3 middle fillers stack up, filler is being housed above the middle filler, and filler is equipped with down in the below, will make combined type shaping filler put into stuffing box during use, compress with Gland, when pressure was higher, medium strutted the V-arrangement lip, is adjacent to valve shaft, pressure is high more, sealing effect is good more, and the material of filler has butadiene acrylonitrile rubber, second third glue, fluorine rubber etc. are to be suitable for different medium temperatures.

The beneficial effects of the utility model are to have adopted combined stuffing, and its V structure has self sealing action, and simple, cost is low, and sealing is reliable.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is embodiment's a tectonic maps.

Among the figure: 1. go up filler; 2. middle filler; 3. descend filler.

Embodiment

As shown in Figure 1, middle filler (2) is a v-shaped structure, and 2 to 3 middle fillers (2) stack up, present embodiment is 2 middle fillers (2), in the top of middle filler (2) filler (1) is housed, filler (3) is equipped with down in the below, will make combined stuffing put into stuffing box during use, compress with Gland, when pressure was higher, medium will go up filler (1) and middle filler (2) V-arrangement lip struts, and is adjacent to valve shaft, pressure is high more, and sealing effect is good more.

Claims (2)

1, a kind of combined stuffing is pressed and is formed by 1 last filler, 2 to 3 middle fillers, 1 following filler, it is characterized in that: middle filler forming V-shape structure, and 2 to 3 middle fillers stack up, and filler is being housed above the middle filler, and filler is equipped with down in the below.

2, combined stuffing according to claim 1 is characterized in that: the material of filler can be butadiene acrylonitrile rubber, second third glue, also can be fluorine rubber.

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