CN211875249U - Ball valve capable of locking handle - Google Patents

Abstract

The utility model discloses a but ball valve of locking handle belongs to valve technical field, including valve body, valve gap, valve core ball, valve rod and handle, the valve body with valve gap fixed connection constitutes and is used for placing the valve body chamber of valve core ball, the top of valve rod is equipped with the flat axle, be equipped with on the handle with flat axle matched with flat hole, one side that the handle is located the flat hole is the handle body of rod, the opposite side that the handle is located the flat hole is equipped with open slot and screw hole. The utility model discloses the one end of well handle is equipped with the open slot, with the taut structure of bolt, can lock the handle, effectively eliminates the dimensional error of valve rod and handle, guarantees that the handle switch position is accurate targets in place, prevents simultaneously that the handle is not hard up and drops.

Description

Ball valve capable of locking handle

Technical Field

The utility model relates to the technical field of valves, in particular to but ball valve of locking handle.

Background

Ball valves (ball valve) come out in 50 s of the 20 th century, and with the rapid development of science and technology and the continuous improvement of production process and product structure, the ball valves have rapidly developed into a main valve class in short 40 years. The use of ball valves is increasing year by year in countries with industrially developed western industries.

In China, the ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, and plays a significant role in national economy. It has the action of rotating 90 degrees, the cock body is a sphere, and a circular through hole or a channel passes through the axis of the cock body. The ball valve is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, and can be closed tightly only by rotating 90 degrees and a small rotating moment.

The existing ball valve is provided with a flat hole on a handle, the flat hole is matched with a flat shaft on a valve rod, the valve rod is driven by the handle, the valve rod controls an opening and closing part ball body, the opening and closing of the valve are realized, and the opening and closing position is limited by the handle and a positioning sleeve. However, when there is a dimension error between the flat hole and the flat shaft, the fit clearance between the handle and the valve rod is too large, so that the switch position of the handle is inaccurate, and the switch of the valve is affected in a serious condition

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a but handle locking's ball valve solves current ball valve and leads to the unsafe problem of handle switch position because handle and valve rod fit clearance are too big.

(II) technical scheme

In order to solve the technical problem, the utility model provides a technical scheme does:

the utility model provides a but handle's ball valve of locking, including valve body, valve gap, valve core ball, valve rod and handle, the valve body with valve gap fixed connection constitutes and is used for placing the valve body chamber of valve core ball, the top of valve rod is equipped with the flat axle, be equipped with on the handle with flat axle matched with flat hole, one side that the handle is located the flat hole is the handle body of rod, the opposite side that the handle is located the flat hole is equipped with open slot and screw hole.

Preferably, the head of the valve rod is provided with an arc ring groove, and when the bolt penetrating through the threaded hole locks the handle, the bolt penetrates through the arc ring groove.

Preferably, the joint of the valve rod and the valve body is sequentially sleeved with a lower filler, a middle filler, an upper filler, a large compression ring and a butterfly spring from bottom to top.

Preferably, graphite packing is arranged above the butterfly spring, and a compression nut is arranged above the graphite packing.

Preferably, the lower filler, the middle filler and the upper filler are annular bodies respectively, the upper surface of the lower filler is provided with a first rib, the lower surface of the middle filler is provided with a first groove matched with the first rib, the upper surface of the middle filler is provided with a second rib, and the lower surface of the upper filler is provided with a second groove matched with the second rib.

Wherein, preferably, the lower filler, the middle filler and the upper filler are PTFE fillers respectively.

Wherein, preferably, one side above the gland nut is provided with a positioning sleeve for limiting the displacement of the handle.

Preferably, the handle is further provided with a standby lock hole.

(III) advantageous effects

The technical scheme provided by the utility model, compared with prior art, following beneficial effect has:

1. the utility model discloses the open slot is established to handle one end, with the taut structure of bolt, can lock the handle, effectively eliminates the dimensional error of valve rod and handle, guarantees that the handle switch position is accurate targets in place, prevents simultaneously that the handle is not hard up and drops.

2. According to utility model one end at the handle is equipped with reserve lockhole, can cooperate with the locating hole on the valve body when needs, pins the handle position, prevents that the accident of valve from closing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other embodiments can be obtained according to the drawings without creative efforts;

fig. 1 is a schematic structural view of a lockable handle ball valve according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic top view of the handle of the present invention;

FIG. 4 is a schematic structural view of the valve stem of the present invention;

fig. 5 is a schematic view of the structure of fig. 4 along direction a.

In the figure: 1. the valve comprises a valve body, 2 parts of a valve cover, 3 parts of a valve core ball, 4 parts of a valve rod, 4-1 parts of a flat shaft, 4-2 parts of an arc ring groove, 5 parts of a positioning sleeve, 6 parts of a valve body cavity, 7 parts of a handle, 7-1 parts of a handle rod body, 7-2 parts of a flat hole, 7-3 parts of an open slot, 7-4 parts of a standby lock hole, 7-5 parts of a threaded hole, 8 parts of lower filler, 9 parts of middle filler, 10 parts of upper filler, 11 parts of a large press ring, 12 parts of a butterfly spring, 13 parts of graphite filler, 14 parts of a gland nut

Detailed Description

The technical solution of the present invention will be described clearly and completely below with reference to specific embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-5, the present embodiment provides a handle lockable ball valve, which includes a valve body 1, a bonnet 2, a core ball 3, a valve rod 4, and a handle 7, wherein the valve body 1 and the bonnet 2 are fixedly connected to form a valve body cavity 6 for placing the core ball 3, a flat shaft 4-1 is disposed at the top end of the valve rod 4, a flat hole 7-2 matched with the flat shaft 4-1 is disposed on the handle 7, the handle 7 is designed to be the flat hole 7-2, and is matched with the flat shaft 4-1 of the valve rod 4, the handle 7 drives the valve rod 4, and the valve rod 4 controls an opening and closing ball to open and close the valve.

One side of the handle 7, which is positioned at the flat hole 7-2, is provided with a handle rod body 7-1, and the other side of the handle, which is positioned at the flat hole 7-2, is provided with an open slot 7-3 and a threaded hole 7-5. During assembly, the handle can be locked by tightening the bolt, so that the size error between the valve rod 4 and the handle 7 is effectively eliminated, and the handle is prevented from loosening.

Meanwhile, the head of the valve rod 4 is provided with an arc ring groove 4-2, and the bolt penetrates through the handle threaded hole to lock the handle 7, and the outer diameter of the bolt also penetrates through the arc ring groove 4-2 at the head of the valve rod, so that the valve rod cannot fall off even if the handle is loosened.

Arc ring groove

The joint of the valve rod 4 and the valve body 1 is sequentially sleeved with a lower filler 88, an inner filler 9, an upper filler 10, a large compression ring 11 and a butterfly spring 12 from bottom to top. The lower filler 8, the middle filler 9 and the upper filler 10 are respectively PTFE fillers.

With the increase of the service time, the filler is continuously aged or burned, the sealing pretightening force of the filler is reduced due to the factors, leakage is finally caused, and the valve disc spring is installed to play a role in delaying the reduction of the sealing pretightening force of the filler so as to realize continuous sealing. Graphite packing 13 is arranged above the butterfly spring 12, the graphite packing 13 is composed of two parts of graphite packing 13 and a graphite gasket, and a compression nut 14 is arranged above the graphite packing 13. PTFE and graphite double packing and other sealing designs of the valve body 1 have the fireproof function. The outer high temperature resistant graphite packing 13 and graphite gasket can still function as a seal when the inner PTFE is burned off due to a media fire.

Wherein, lower filler 8, middle filler 9, go up filler 10 and be the tourus respectively, the upper surface of lower filler 8 is equipped with first bead, and the lower surface of middle filler 9 is equipped with the first recess with first bead matched with, and the upper surface of middle filler 9 is equipped with the second bead, goes up filler 10 lower surface and is equipped with the second recess with second bead matched with. When the compression nut 14 compresses, the lower packing 8, the middle packing 9 and the upper packing 10 can be tightly combined, and the sealing effect is further improved.

Wherein, one side above the compression nut 14 is provided with a positioning sleeve 5 for limiting the displacement of the handle 7. The switch position depends on the limit of the handle and the locating sleeve 5.

The handle 7 is also provided with a standby lock hole 7-4 which can be locked when needed, the relative position of the handle 7 and the valve body can be fixed through the lock hole, and the valve is kept in an opening or closing state and is not opened or closed randomly by irrelevant people.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a but handle's ball valve is locked, includes valve body, valve gap, valve core ball, valve rod and handle, the valve body with valve gap fixed connection constitutes and is used for placing the valve body chamber of valve core ball its characterized in that: the top of valve rod is equipped with the flat axle, be equipped with on the handle with flat axle matched with flat hole, one side that the handle is located the flat hole is the handle body of rod, the opposite side that the handle is located the flat hole is equipped with open slot and screw hole.

2. A lockable handle ball valve as claimed in claim 1, wherein: the head of the valve rod is provided with an arc ring groove, and when the bolt penetrating through the threaded hole locks the handle, the bolt penetrates through the arc ring groove.

3. A lockable handle ball valve as claimed in claim 1, wherein: the valve rod with the junction of valve body from up the cover is equipped with down filler, well filler, goes up filler, big clamping ring and butterfly spring from down in proper order.

4. A lockable handle ball valve as claimed in claim 3, wherein: graphite packing is arranged above the butterfly spring, and a compression nut is arranged above the graphite packing.

5. A lockable handle ball valve as claimed in claim 3, wherein: the lower filler, the middle filler and the upper filler are respectively annular bodies, the upper surface of the lower filler is provided with a first convex edge, the lower surface of the middle filler is provided with a first groove matched with the first convex edge, the upper surface of the middle filler is provided with a second convex edge, and the lower surface of the upper filler is provided with a second groove matched with the second convex edge.

6. A lockable handle ball valve as claimed in claim 3, wherein: the lower filler, the middle filler and the upper filler are PTFE fillers respectively.

7. A lockable handle ball valve as claimed in claim 4, wherein: and a positioning sleeve for limiting the displacement of the handle is arranged on one side above the compression nut.

8. A lockable handle ball valve as claimed in claim 1, wherein: the handle is also provided with a standby lock hole.

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