CN213629177U - Valve rod protective sleeve - Google Patents

Abstract

The utility model discloses a valve rod protective sheath, including having the urceolus cover along the bar observation groove that the axial was seted up, and the suit in the inboard and transparent inner tube cover of urceolus cover. Because the strip-shaped observation groove is formed in the outer cylinder cover, an operator can conveniently judge the opening degree of the valve body according to the height of the valve rod. The utility model discloses establish the protective sheath into inside and outside two-layer, only set up the bar observation groove and cover in the urceolus, the inner tube cover is established for transparent. Therefore, not only can the operator continuously and conveniently judge the opening degree of the valve body, but also the adverse effects of sand wind and the like on the valve rod are effectively prevented, and the protection effect is reliable. Furthermore, the utility model discloses establish the protective sheath into inside and outside two-layer, can design the material of outer cover and interior cover respectively according to the performance requirement of difference, make the comprehensive properties of product obtain the optimum.

Description

Valve rod protective sleeve

Technical Field

The utility model relates to a valve accessories technical field especially relates to a valve rod protective sheath.

Background

The gate valve is widely used in petrochemical places due to the characteristics of good sealing performance, simple structure, no restriction on the flow direction of a medium and the like.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a typical gate valve in the prior art.

In the working process, the gate valve is usually in a long-term opening state, and the valve rod 5 extends out of the valve body 6 for a long time. Due to production requirements, many gate valves are arranged outdoors, so that the valve rod 5 is often exposed in the natural environment for a long time and easily rusts after a long time, or sand, dust, sundries and the like are adhered in the screw threads, and the normal use of the valve is affected.

Moreover, the exposed end of the valve rod 5 and the external thread thereof may scratch the human body or equipment, and certain unsafe factors exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can protect the reliable and convenient to use's of effect valve rod protective sheath.

In order to achieve the above object, the utility model provides a valve rod protective sheath, including having the outer barrel casing along the bar observation groove that the axial was seted up, and the suit in the inboard just transparent inner tube cover of outer barrel casing.

Preferably, the inner cylinder cover is provided with a scale groove corresponding to the strip-shaped observation groove.

Preferably, the bottom end of the outer cylinder cover is fixedly connected with a cover cap capable of being sleeved on the outer side of the top of the wheel hub of the valve body, and a magnet ring used for adsorbing the wheel hub is arranged on the inner side of the cover cap.

Preferably, the bottom of the inner cylinder cover is fixedly connected with a mounting ring, the top of the inner side of the cover is fixedly provided with a connecting bolt, and the mounting ring and the magnet ring are fixedly connected through the connecting bolt and a nut matched with the connecting bolt.

Preferably, buffering pads are arranged between the mounting ring and the cover and between the mounting ring and the magnet ring.

Preferably, the outer side of the outer cylinder cover is provided with a light reflecting structure extending along the axial direction.

Preferably, the light-reflecting structure is arranged in the strip-shaped observation groove and the light-reflecting structure, and the strip-shaped observation groove and the light-reflecting structure are arranged at intervals in the circumferential direction.

Preferably, the top of the outer cylinder cover is an arc top.

The utility model provides a valve rod protective sheath, including having the outer cylinder cover along the bar observation groove that the axial was seted up, and the suit in the inboard and transparent inner tube cover of outer cylinder cover. Because the strip-shaped observation groove is formed in the outer cylinder cover, an operator can conveniently judge the opening degree of the valve body according to the height of the valve rod. Because of only seting up the protection effect that the bar observation groove can obviously reduce the protective sheath, so the utility model discloses be not limited to this, still establish the protective sheath to inside and outside two-layer, only set up the bar observation groove on the urceolus covers, the inner tube cover is established to transparent.

Therefore, not only can the operator continuously and conveniently judge the opening degree of the valve body, but also the adverse effects of sand wind and the like on the valve rod are effectively prevented, and the protection effect is reliable.

Furthermore, the utility model discloses establish the protective sheath into inside and outside two-layer, can design the material of outer cover and interior cover respectively according to the performance requirement of difference, make the comprehensive properties of product obtain the optimum.

In a specific embodiment, the inner cylinder cover is provided with a scale groove corresponding to the strip-shaped observation groove; the operational convenience can be further improved.

In another specific embodiment, a cover cap capable of being sleeved on the outer side of the top of a hub of the valve body is fixedly connected to the bottom end of the outer cylinder cover, and a magnet ring for adsorbing the hub is arranged on the inner side of the cover cap; the arrangement can ensure that the relative position of the protective sleeve after the protective sleeve is arranged on the valve rod is more stable.

In other specific embodiments, the top of the outer cylinder cover is designed to be an arc-shaped top, and the arrangement of the light reflecting structure can obviously improve the safety performance of the valve body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of a typical gate valve in the prior art;

FIG. 2 is a schematic structural view of a valve stem protector according to an embodiment of the present invention;

FIG. 3 is a bottom view of the valve stem boot of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the valve stem boot of FIG. 2;

FIG. 5 is an enlarged view of the structure at A in FIG. 4;

FIG. 6 is a schematic structural view of the inner cylinder cover of FIG. 2;

FIG. 7 is a schematic view of the valve stem boot of FIG. 2 in use.

The reference numerals in fig. 1 to 7 are as follows:

the device comprises an outer cylinder cover 1, a strip-shaped observation groove 2, a cover 21, an inner cylinder cover 22, a mounting ring 23, a connecting hole 24, a connecting bolt 25, a magnet ring 26, a counter bore 27, a nut 28, a scale groove 3, a cushion pad 31, a reflective sticker 33, a valve rod 5, a hand wheel 51, a wheel body 511, a spoke 512, a wheel hub 513 and a valve body 6.

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. 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.

The utility model provides a can protect the reliable and convenient to use's of effect valve rod protective sheath.

Referring to fig. 2-7, fig. 2 is a schematic structural view of a valve stem protection sleeve according to an embodiment of the present invention; FIG. 3 is a bottom view of the valve stem boot of FIG. 2; FIG. 4 is a schematic cross-sectional view of the valve stem boot of FIG. 2; FIG. 5 is an enlarged view of the structure at A in FIG. 4; FIG. 6 is a schematic structural view of the inner cylinder cover of FIG. 2; FIG. 7 is a schematic view of the valve stem boot of FIG. 2 in use.

In a first embodiment, the present invention provides a valve stem protection sleeve, which is mainly suitable for protecting the valve stem of a gate valve, but it does not mean that it can not be used for other types of valve bodies.

The valve rod protecting sleeve mainly comprises an outer cylinder cover 1, an inner cylinder cover 22 and an auxiliary component for directly matching with the valve rod 5.

The outer cylinder cover 1 is a cylinder with an open bottom, and may be made of stainless steel, and its inner cavity can accommodate the valve rod 5 and the inner cylinder cover 22. The lateral wall of outer barrel casing 1 is seted up along axially extended bar observation groove 2, and the quantity of bar observation groove 2 can be one or more.

The top of the outer cylinder cover 1 can be an arc top; therefore, accidental injury of the valve rod 5 and the threads of the valve rod to personnel and equipment can be effectively avoided, and new risk factors brought by the outer cylinder cover 1 can be prevented.

In addition, the outer side of the outer cylinder cover 1 may be further provided with a light reflecting structure (e.g. a light reflecting sticker 33 in the form of yellow-black stripes), which should extend along the axial direction of the outer cylinder cover 1, and the number of the light reflecting structure should match with the strip-shaped observation grooves 2 (and the scale grooves 3 to be described later); when both are provided in plural sets, they may be provided at intervals in the circumferential direction. For example, two strip-shaped observation slots 2 that are symmetrical left and right may be provided, and in this case, two reflective structures that are symmetrical front and back should be respectively provided at a position between the two strip-shaped observation slots 2.

The setting of reflection of light structure can obviously promote the safety in utilization of valve body.

The inner cylinder cover 22 is also in a cylinder shape with an open bottom end, and is nested inside the outer cylinder cover 1, and the valve rod 5 is positioned in the inner cavity of the inner cylinder cover 22. The inner cylinder cover 22 is a transparent cover, so that after the outer cylinder cover and the outer cylinder cover 1 are embedded into a whole, a relatively closed protective environment can be provided for the valve rod 5 in the inner cylinder cover, and a user can conveniently judge the opening degree of the valve body.

The utility model discloses establish the protective sheath into inside and outside two-layer, only set up the bar observation groove and cover in the urceolus, the inner tube cover is established for transparent. Therefore, not only can the operator continuously and conveniently judge the opening degree of the valve body, but also the adverse effects of sand wind and the like on the valve rod are effectively prevented, and the protection effect is reliable. Furthermore, the utility model discloses establish the protective sheath into inside and outside two-layer, can design the material of outer cover and interior cover respectively according to the performance requirement of difference, make the comprehensive properties of product obtain the optimum.

In one embodiment, the scale groove 3 may be further provided on the inner cylinder cover 22, and the scale groove 3 may be located at a position corresponding to the bar-shaped observation groove 2. Therefore, the specific opening degree of the gate valve can be calculated conveniently and accurately according to the specific height of the valve rod 5, and the convenience of an operator in actual work is further improved. Of course, the number of scale grooves 3 should match the number of bar-shaped observation grooves 2.

The valve stem protective sleeve provided by the utility model can also comprise a cover cap 21.

A cover 21 may be fixedly attached to the bottom end of the outer cylindrical housing 1, the cover 21 also being substantially cylindrical, having a radial dimension greater than that of the outer cylindrical housing 1 and being disposed substantially coaxially therewith. Please refer to the prior art for the fixed connection of the two, which is not described in detail herein.

The cap 21 can be placed on top of the boss 513 on the valve body 6 to initially position the valve stem protection sleeve on the hand wheel 51. Hand wheel 51 generally comprises wheel body 511, spokes 512 and hub 513. A magnet ring 26 may be further disposed on the inner side of the cover 21, and the magnet ring 26 is used to attach the hub 513, thereby further stabilizing the position of the stem protection sleeve relative to the hand wheel 51.

In addition, the bottom of the inner cylinder cover 22 can also be fixedly connected with a mounting ring 23, and a plurality of (for example, four) connecting holes 24 are reserved on the mounting ring 23; the top position of the inner side of the cover 21 can be fixedly provided with a connecting bolt 25, so that the connecting bolt 25 passes through the connecting hole 24 and is matched with a nut 28, and the fixed connection of the outer cylinder cover 1 and the inner cylinder cover 22 can be realized.

The magnet ring 26 can also be mounted by means of the connecting bolts 25, by simply providing the magnet ring 26 with through holes whose positions and dimensions are similar to those of the connecting holes 24.

Cushions 31 may also be provided, for example one cushion 31 between the mounting ring 23 and the cover 21, and one cushion 31 between the mounting ring 23 and the magnet ring 26, so that the mounting ring 23 is prevented from being crushed. The cushion 31 may be a rubber cushion.

Referring to FIG. 7, FIG. 7 is a schematic view of the valve stem boot of FIG. 2 in use; the figure includes a valve rod 5 and a hand wheel 51, and the valve rod 5 is matched with any one of the valve rod protective sleeves.

The hub 513 of the handwheel 51 may be provided as a steel hub to better fit the valve stem protection sleeve provided with the magnet ring 26.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is right above the utility model provides a valve rod protective sheath introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (8)

1. The valve rod protective sleeve is characterized by comprising an outer cylinder cover (1) and a transparent inner cylinder cover (22), wherein the outer cylinder cover (1) is provided with a strip-shaped observation groove (2) which is formed in the axial direction, and the transparent inner cylinder cover (22) is sleeved on the inner side of the outer cylinder cover (1).

2. The stem guard according to claim 1, characterized in that the inner cylinder housing (22) is provided with a scale groove (3) at a position corresponding to the strip-shaped observation groove (2).

3. The valve rod protective sleeve according to claim 1, characterized in that a cover cap (21) capable of being sleeved on the outer side of the top of a hub (513) of the valve body is fixedly connected to the bottom end of the outer cylinder cover (1), and a magnet ring (26) for adsorbing the hub (513) is arranged on the inner side of the cover cap (21).

4. The stem protection sleeve according to claim 3, characterized in that a mounting ring (23) is fixedly connected to the bottom of the inner cylinder cover (22), a connecting bolt (25) is fixedly arranged at the top of the inner side of the cover (21), and the mounting ring (23) and the magnet ring (26) are fixedly connected by the connecting bolt (25) and a nut (28) matched with the connecting bolt.

5. Valve stem boot according to claim 4, wherein a cushion (31) is provided between the mounting ring (23) and the cover (21) and between the mounting ring (23) and the magnet ring (26).

6. Valve stem boot according to any of claims 1 to 5, wherein the outer side of the outer cylinder housing (1) is provided with an axially extending light reflecting structure.

7. The valve stem boot of claim 6, wherein there are two sets of said strip-shaped sight grooves (2) and two sets of said light reflecting structures, and wherein said strip-shaped sight grooves (2) and said light reflecting structures are circumferentially spaced.

8. Valve stem boot according to claim 6, characterized in that the top of the outer cartridge housing (1) is a curved top.

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