CN219413717U - Stop valve - Google Patents

Abstract

The utility model discloses a stop valve, which comprises a valve body, wherein a packing mechanism is arranged on the valve body, and the valve body is connected with a packing arranged in a connecting way through a gland arranged on the valve body so as to extrude the packing arranged in the packing mechanism; the pushing mechanism comprises a supporting part, a cavity for storing filler is arranged in the middle of the supporting part, and a supporting plate for bearing the filler is arranged at the bottom of the cavity; an upper backing ring is arranged at the upper end of the supporting part, a lower backing ring is arranged at the lower end of the supporting part, and an internal threaded hole is further formed in the upper backing ring; when the bolt is connected with the internal thread hole, the whole packing mechanism can be taken out from the valve body by pulling the bolt upwards, and then the packing inside the packing mechanism is taken out, so that the replacement of the packing is simple and convenient, and the maintenance cost of the valve is reduced. In conclusion, the packing chamber is designed into the sleeve type, so that the packing chamber is convenient to replace and purchase integrally, and meanwhile, workers can replace rapidly on site conveniently, and the common workers can replace the packing chamber in a few minutes through the instruction book.

Description

Stop valve

Technical Field

The utility model relates to the technical field of valves, in particular to a stop valve

Background

At present, the valve end of the existing valve is sealed by adopting a common packing gland structure, and the valve is easy to leak and block due to factors such as erosion of internal media, damage of frequent actions, aging of the valve and the like after long-term use, if the problems occur, the following solutions are generally adopted: (1) The packing is replaced on line, and the packing box has small space, so the success rate of completely polishing the packing is small, and the packing needs a long time, and the site conditions cannot be allowed and satisfied. (2) The valve is taken off line to replace the filler, and the maintenance time and temporary replacement spare parts or bypass of the valve are required to be provided on site. (3) The valve or the valve body needs to be replaced again, and the cost is high.

Disclosure of Invention

The present utility model is directed to a stop valve to solve the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the stop valve comprises a valve body, wherein a packing mechanism is arranged on the valve body, and the valve body is connected with a packing arranged in the valve body through a gland, so that the packing is extruded in the packing mechanism; the packing mechanism comprises a supporting part, a cavity for storing packing is arranged in the middle of the supporting part, and a supporting plate for bearing the packing is arranged at the bottom of the cavity; an upper backing ring is arranged at the upper end of the supporting part, and a lower backing ring is arranged at the lower end of the supporting part; the upper backing ring and the lower backing ring are respectively provided with a sealing ring, and the upper backing ring is also provided with an internal threaded hole.

As a preferable technical scheme of the utility model: the upper backing ring and the lower backing ring are also provided with ring grooves for installing the sealing rings.

As a preferable technical scheme of the utility model: and the valve body is also provided with an accommodating area for accommodating the upper backing ring.

As a preferable technical scheme of the utility model: the number of the internal threaded holes is two, and the two internal threaded holes are symmetrically arranged on the upper backing ring.

As a preferable technical scheme of the utility model: the material of the filling mechanism is rubber.

By adopting the technical scheme, the utility model has the beneficial effects that: when the bolt is connected with the internal thread hole, the whole packing mechanism can be taken out from the valve body by pulling the bolt upwards, and then the packing inside the packing mechanism is taken out, so that the replacement of the packing is simple and convenient, and the maintenance cost of the valve is reduced. In conclusion, the packing chamber is designed into the sleeve type, so that the packing chamber is convenient to replace and purchase integrally, and meanwhile, workers can replace rapidly on site conveniently, and the common workers can replace the packing chamber in a few minutes through the instruction book.

Drawings

FIG. 1 is a schematic diagram of an exploded construction of the present utility model;

FIG. 2 is a schematic diagram of the main structure of the packing mechanism of the present utility model;

FIG. 3 is a schematic cross-sectional view of a packing mechanism of the present utility model.

In the figure: 1. a gland; 2. a seal ring; 3. a filler; 4. a filler mechanism; 40. an upper backing ring; 41. a ring groove; 42. a cavity; 43. an internal threaded hole; 44. a support part; 45. a lower backing ring; 46. a support plate; 5. a receiving area; 6. and a valve body.

Description of the embodiments

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "upper surface", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1-3, an embodiment of the present utility model is provided: the stop valve comprises a valve body 6, wherein a packing mechanism 4 is arranged on the valve body 6, and the valve body 6 is connected with a packing 3 which is arranged in a pressing cover 1 and is extruded in the packing mechanism 4; the packing mechanism 4 comprises a supporting part 44, a cavity 42 for storing packing is arranged in the middle of the supporting part 44, and a supporting plate 46 for bearing the packing 3 is arranged at the bottom of the cavity 42;

due to the arrangement of the supporting plate 46, the packing 3 is prevented from flowing out of the supporting part 44, and further after the gland 1 is connected with the valve body 6, the packing 3 can be promoted to deform, so that the packing 3 can be tightly held on the valve rod, and the leakage phenomenon is reduced.

Because the upper end of the supporting part 44 is provided with an upper backing ring 40, and the lower end of the supporting part 44 is provided with a lower backing ring 45; the upper backing ring 40 and the lower backing ring 45 are respectively provided with a sealing ring 2, so that when the gland 1 is pressed, the sealing rings 2 are extruded, at the moment, the two ends of the packing mechanism 4 can be ensured to be sealed, and the sealing capability of the packing mechanism 4 to a gap between the valve body 6 and the gland 1 is further improved.

Because the upper backing ring 40 is further provided with the internal threaded hole 43, after the bolt is connected with the internal threaded hole 43, the filler mechanism 4 can be easily taken out from the valve body 6 by pulling the bolt upwards, so that the dismantling efficiency of the filler mechanism 4 can be improved.

In summary, the packing chamber is designed into the sleeve type, so that the packing chamber is convenient to replace and purchase integrally, and meanwhile, workers can replace rapidly on site conveniently, and the common workers can replace the packing chamber in a few minutes through the instruction book.

Further, since the upper backing ring 40 and the lower backing ring 45 are further provided with the annular groove 41 for mounting the sealing ring 2, the sealing ring 2 can be positioned by using the annular groove 41, so as to avoid the leakage phenomenon caused by displacement of the sealing ring 2, and meanwhile, the annular groove 41 can also reduce the problem that the sealing ring 2 is squeezed and cracked due to excessive squeezing of the sealing ring 2.

On the basis of the scheme, the valve body 6 is also provided with the accommodating area 5 for accommodating the upper backing ring 40, so that the upper backing ring 40 can be accommodated by the accommodating area 5, and the upper backing ring 40 is prevented from being higher than the upper end face of the valve body 6; at the same time, the receiving area 5 can also lift the upper grommet 40 so that the packing element 4 is reliably located in the valve body 6.

Further, since the number of the internal threaded holes 43 is two, and the two internal threaded holes 43 are symmetrically arranged on the upper backing ring 40, the force can be synchronously applied from two ends, and the packing mechanism 4 is lifted upwards, so that the packing mechanism 4 is prevented from being blocked in the valve body 6 in the process of sliding upwards.

Furthermore, since the material of the packing mechanism 4 is rubber, the gap between the inner wall of the valve body 6 and the packing mechanism 4 can be further reduced by utilizing the deformation of the packing mechanism 4 itself, and the sealing capability can be further enhanced.

The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.

Claims (5)

1. A shut-off valve, characterized in that: the packing device comprises a valve body (6), wherein a packing mechanism (4) is arranged on the valve body (6), and the valve body (6) is connected with a packing (3) which is arranged in a pressing cover (1) to be pressed in the packing mechanism (4);

the packing mechanism (4) comprises a supporting part (44), a cavity (42) for storing packing is arranged in the middle of the supporting part (44), and a supporting plate (46) for bearing the packing (3) is arranged at the bottom of the cavity (42);

an upper backing ring (40) is arranged at the upper end of the supporting part (44), and a lower backing ring (45) is arranged at the lower end of the supporting part (44);

the upper backing ring (40) and the lower backing ring (45) are respectively provided with a sealing ring (2), and the upper backing ring (40) is also provided with an internal threaded hole (43).

2. A shut-off valve as defined in claim 1 wherein: the upper backing ring (40) and the lower backing ring (45) are also provided with annular grooves (41) for installing the sealing rings (2).

3. A shut-off valve as in claim 1 or 2 wherein: the valve body (6) is also provided with a containing area (5) for containing the upper backing ring (40).

4. A shut-off valve according to claim 3, wherein: the number of the internal threaded holes (43) is two, and the two internal threaded holes (43) are symmetrically arranged on the upper backing ring (40).

5. A shut-off valve as defined in claim 4 wherein: the material of the packing mechanism (4) is rubber material.