CN215059670U - Ultra-short ball valve - Google Patents

Abstract

The utility model relates to the technical field of valves, in particular to an ultra-short ball valve, which comprises a valve body, a valve cover, a ball body and a valve rod, wherein the valve body is detachably connected with the valve cover; the ball body is in mortise and tenon joint with the valve rod and is arranged in the valve body; the valve rod penetrates through the inner cavity of the valve body and penetrates out of the packing box at the top of the valve body. The utility model is convenient to be disassembled and assembled during maintenance, and has few parts required to be replaced during maintenance and low maintenance cost; the utility model has short installation length and lighter weight than the fluorine-lined ball valve with the same specification; the valve has compact and simple integral structure, convenient installation and wide application range; when the valve is closed, the accumulated materials at the runners at the two ends are less; key parts such as the valve body, the valve core and the like are all processed and manufactured by adopting stainless steel lining fluoroplastic, and have special performances such as long-time strong corrosion medium resistance, ageing resistance and the like; the valve has good rigidity of the whole structure, stable operation, safety, reliability and long service life when in use.

Description

Ultra-short ball valve

Technical Field

The utility model relates to the technical field of valves, in particular to ultrashort type ball valve.

Background

The ball valve is a valve whose opening and closing member (ball) is driven by valve rod and can make rotary motion around the axis of ball valve, and is mainly used for cutting, distributing and changing flow direction of medium in pipeline, and it only has need of 90 deg. rotation operation and small turning moment to tightly close valve. At present, most of domestic fluoroplastic lining ball valves are designed and manufactured according to the structure length of European standard, national standard or American standard, and the fluoroplastic lining valves are long in overall length and heavy in structure. At present, fluoroplastic lining ball valves at home and abroad are designed in a two-piece typical structure, a left valve body and a right valve body are connected into an integral valve through an intermediate flange, most ball shafts are designed in an integral structure, and only pure metal valves can be arranged in the current industry of one-piece ball valve structures.

For the two-piece structure design adopted by the existing fluoroplastic lining ball valve, the following problems exist in the practical use of customers: the ball valve structure with the fluoroplastic lining has the advantages that the structure volume of the ball valve is large, the length of the ball valve structure is long, and the ball valve structure cannot be used in occasions with narrow installation spaces. Secondly, in some special occasions, for example when the valve is used as a bottom valve of a reaction tank, because the fluoroplastic lining ball valve is generally longer in structure, more accumulated materials are generated at a flow passage when the valve is closed. And thirdly, the left valve body and the right valve body of the fluorine-lined ball valve are connected together by bolts and hexagon nuts, and are installed in a pipeline for a long time to bear the tensile load and the bending load of the pipeline, so that the joint of the left valve body and the right valve body is loosened, and the condition of leakage is generated. The ball shaft is designed in an integrated mode, the ball shaft of the fluoroplastic lining ball valve is worn and leaks in the using process, and when the ball shaft and a sealing ring need to be replaced and maintained, the ball shaft can be taken out for replacement only by completely disassembling accessories such as a packing, a gland and a handle of the ball valve. Therefore, there is a need for improving the structure of the existing fluoroplastic lined ball valve to solve the deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a change among the correlation technique and wash trouble problem, provide an ultrashort type ball valve, need wash the inside or when changing the accessory of ball valve, only need pull out the valve gap and can take out spheroid and valve seat sealing washer and wash or change, need not like traditional fluoroplastics lining ball valve must all pull down the accessories such as valve rod, filler, gland and just can wash the maintenance to the ball valve, easy dismounting when the valve is maintained, the spare part of maintaining required change is few, the maintenance cost is low.

In order to solve the technical problem, the utility model is realized by the following technical scheme: an ultra-short ball valve comprises a valve body, a valve cover, a ball body and a valve rod, wherein the valve body is detachably connected with the valve cover; the ball body is in mortise and tenon joint with the valve rod and is arranged in the valve body; the valve rod penetrates through the inner cavity of the valve body and penetrates out of the packing box at the top of the valve body.

As the preferred scheme, install the disk seat sealing washer in the valve body.

As a preferred scheme, a square counter bore is formed in the ball body, and a boss matched with the square counter bore is arranged on the valve rod.

Preferably, the ball is installed in the valve body and is in contact with the valve seat sealing ring.

Preferably, a valve seat sealing ring is also installed in the valve cover.

Preferably, the valve body is detachably connected with the valve cover through a screw.

As a preferred scheme, the valve body is sequentially provided with a corrugated packing, a push ring, an elastic press ring, a gland, a positioning sheet and a hexagonal thin nut.

Preferably, a handle is mounted on the valve stem.

Compared with the prior art, the beneficial effects of the utility model are that: when the interior of the ball valve needs to be cleaned or accessories are replaced, the ball body and the valve seat sealing ring can be taken out for cleaning or replacement only by detaching the valve cover, the ball valve can be cleaned and maintained without completely detaching the accessories such as the valve rod, the packing, the gland and the like the traditional fluoroplastic lining ball valve, the valve is convenient to disassemble and assemble during maintenance, the parts required to be replaced during maintenance are few, and the maintenance cost is low; the utility model has short installation length and lighter weight than the fluorine-lined ball valve with the same specification; the valve has compact and simple integral structure, convenient installation and wide application range; when the valve is closed, the accumulated materials at the runners at the two ends are less; key parts such as the valve body, the valve core and the like are all processed and manufactured by adopting stainless steel lining fluoroplastic, and have special performances such as long-time strong corrosion medium resistance, ageing resistance and the like; the valve has good rigidity of the whole structure, stable operation, safety, reliability and long service life when in use.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a cross-sectional view of the internal structure of the present invention in a closed state;

fig. 4 is a sectional view of the internal structure of the present invention in the open state.

In the figure:

1. the valve comprises a valve body, 2, a valve cover, 3, a ball body, 4, a valve rod, 5, a valve seat sealing ring, 6, corrugated packing, 7, a push ring, 8, an elastic press ring, 9, a press cover, 10, a positioning sheet, 11, a hexagonal thin nut, 12 and a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1 to 4, an ultra-short ball valve comprises a valve body 1, a valve cover 2, a ball body 3 and a valve rod 4, wherein the valve body 1 is detachably connected with the valve cover 2; the ball body 3 is in mortise and tenon joint with the valve rod 4 and is arranged in the valve body 1; the valve rod 4 penetrates into the inner cavity of the valve body 1 and penetrates out of the stuffing box at the top of the valve body 1.

In one embodiment, a valve seat sealing ring 5 is installed in the valve body 1, so that the sealing performance of the valve body 1 is ensured.

In one embodiment, the ball 3 is provided with a square counter bore, the valve rod 4 is provided with a boss matched with the square counter bore, and during assembly, the square counter bore on the ball 3 is matched with the square boss on the valve rod 4 to form a mortise-tenon joint structure.

In one embodiment, the ball 3 is installed in the valve body 1 and contacts with the valve seat sealing ring 5 to ensure the sealing performance.

In one embodiment, a seat seal 5 is also mounted within the bonnet 2.

In one embodiment, the valve body 1 and the valve cover 2 are detachably connected by screws.

In one embodiment, the valve body 1 is sequentially provided with a corrugated packing 6, a pushing ring 7, an elastic pressing ring 8, a pressing cover 9, a positioning sheet 10 and a hexagonal thin nut 11.

In one embodiment, the valve stem 4 has a handle 12 mounted thereon.

In addition, the valve body 1, the valve core and other key parts are all manufactured by adopting stainless steel lining fluoroplastic, and have special performances of long-time strong corrosion medium resistance, ageing resistance and the like.

The utility model discloses an assembly process as follows:

during assembly, the valve rod 4 firstly penetrates into the inner cavity of the valve body 1 and penetrates out of the stuffing box at the top of the valve body 1, and then a valve seat sealing ring 5 is arranged in the valve body 1; the ball body 3 is provided with a square counter bore which is matched with a square boss on the valve rod 4 to form a tenon-and-mortise connection structure, the ball body 3 is butted with the square boss of the valve rod 4 during assembly, and then the ball body 3 is arranged in the valve body 1 to be contacted with the valve seat sealing ring; then another valve seat sealing ring 5 is arranged in the valve cover 2, the valve cover 2 is arranged in the valve body 1, and the valve cover and the valve body are connected by using screws (the screws are not tightened); after the preassembling of parts in the valve body is completed, the corrugated packing 6, the pushing ring 7, the elastic pressing ring 8, the gland 9, the positioning piece 10 and the hexagonal thin nut 11 are sequentially installed on the valve body 1, and finally, after the ball shaft is tested by the handle 12 to be capable of flexibly rotating, the valve body, the valve cover connecting screw and the gland fastening screw are screwed down. When the utility model discloses when the super short type fluoroplastics lining ball valve need wash the inside or change accessory of ball valve after long-term the use, only need to tear out valve gap 2 and come out and to wash or change spheroid and valve seat seal circle, need not like traditional fluoroplastics lining ball valve must all tear down accessories such as valve rod, filler, gland and just can wash the maintenance to the ball valve, consequently the utility model discloses it is more convenient to maintain during the use, and use cost is lower.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims (8)

1. An ultrashort type ball valve which is characterized in that: the valve comprises a valve body (1), a valve cover (2), a ball body (3) and a valve rod (4), wherein the valve body (1) is detachably connected with the valve cover (2); the ball body (3) is in mortise and tenon joint with the valve rod (4) and is arranged in the valve body (1); the valve rod (4) penetrates from the inner cavity of the valve body (1) and penetrates out of the packing box at the top of the valve body (1).

2. The ultra-short ball valve of claim 1, wherein: and a valve seat sealing ring (5) is arranged in the valve body (1).

3. The ultra-short ball valve of claim 1, wherein: the ball body (3) is provided with a square counter bore, and the valve rod (4) is provided with a boss matched with the square counter bore.

4. The ultra-short ball valve of claim 2, wherein: the ball body (3) is arranged in the valve body (1) and is contacted with the valve seat sealing ring (5).

5. The ultra-short ball valve of claim 1, wherein: and a valve seat sealing ring (5) is also arranged in the valve cover (2).

6. The ultra-short ball valve of claim 1, wherein: the valve body (1) is detachably connected with the valve cover (2) through screws.

7. The ultra-short ball valve of claim 1, wherein: the valve body (1) is sequentially provided with a corrugated packing (6), a push ring (7), an elastic press ring (8), a gland (9), a positioning sheet (10) and a hexagonal thin nut (11).

8. The ultra-short ball valve of claim 1, wherein: and a handle (12) is arranged on the valve rod (4).

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