CN218494329U

CN218494329U - Valve rod protective sleeve provided with indicating ring and valve provided with protective sleeve

Info

Publication number: CN218494329U
Application number: CN202221081125.8U
Authority: CN
Inventors: 李明树
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-08
Filing date: 2022-05-08
Publication date: 2023-02-17
Anticipated expiration: 2032-05-08
Also published as: WO2023216859A1

Abstract

A valve stem protecting sleeve with indicating ring and valve with said protecting sleeve can remotely and omnidirectionally know the height position of valve stem by observing said indicating ring, so knowing the opening degree of valve. An indicating ring is arranged outside the protective sleeve body and can synchronously lift along with the lifting of the valve rod. The method comprises a magnetic attraction method, wherein the sleeve body is made of non-magnetic materials such as plastics and aluminum, a magnet is fixedly arranged at the top of the valve rod in the sleeve, the indicating ring outside the sleeve is made of magnetic materials such as steel, and the magnet attracts the indicating ring to lift. Secondly, a needling method is adopted; and thirdly, a rope traction method. The three methods have their advantages, wherein the magnetic attraction method has the simplest structure and the widest application range. The attached figure is a protective sleeve by a magnetic attraction method.

Description

Valve rod protective sleeve provided with indicating ring and valve provided with protective sleeve

Technical Field

The utility model relates to a pipeline valve is valve rod protective sheath for door especially disposes valve rod indicating ring to can observe the valve rod protective sheath of valve rod high position at remote through observing indicating ring, and be equipped with the valve of this protective sheath.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). The valve stem is one of the important parts of the valve. The upper end of the valve rod is connected with an actuating mechanism or a handle, and the lower end directly drives the valve core to move or rotate so as to realize the opening and closing or adjusting function of the valve.

In actual production operation, the environment of the valve is generally poor, and particularly, the open-stem manual valve is used. The valve rod is exposed for a long time, and besides wind and rain, dust and silt are stuck on grease coated on the valve rod, so that the valve rod is easy to rust, the valve is inflexible to open and close, and even the valve cannot be closed. To solve this problem, the simplest method is to use a sleeve directly over the valve stem. There are several disadvantages to this approach. One is as follows: the height of the valve stem, i.e., the closing and opening of the valve, is not visible, and if the valve is stuck, the operator does not know whether it is in place or stuck. When the pipeline is debugged, accidents are very easy to happen because the opening and closing of the valve cannot be observed. The second is that: when the valve is completely closed, the protective sleeve is not fixed and is easy to fall off and lose. Because no good solution exists, the valve rod is often directly exposed on site.

Many efforts have been made by those in the industry to solve this problem. For example, CN212899971U, "a new transparent valve rod protection sleeve for electric device", approved in 2021, is a multi-section telescopic structure using transparent materials, which also realizes the function of protecting the valve rod, when the valve is closed, the valve rod descends, and due to the multi-section telescopic structure, the protection sleeve also can partially descend, which can shorten the length of the protection sleeve. The valve stem position can also be seen from a particular side (the side of the elongated plastic panel 4) when newly installed. It has several fatal weaknesses: in addition to the complexity that necessarily results in difficult machining and high cost, the greatest problem is the inability to remotely and universally observe the height of the valve stem, which is necessary for the operation of the piping system in which the valve is used. Therefore, the patent cannot be popularized and used on site. In fact, the protective sleeve is made of transparent materials, and a lot of data are reported before. But this is only one of the ideas and is of course poor. The reasons for this are three: one is the light problem. It is known that the high light is clearly seen from the low light and the low light is not clearly seen from the high light through the glass, and when the sunlight and the observer are in the same direction, the height of the valve rod is difficult to clearly see by the long-distance observer through the protective sleeve. The second is that: the valve rod is generally coated with butter, the inner wall of the protective sleeve cannot be contacted with the valve rod, and thus, the transparent material is not transparent for a long time; thirdly, many valves are used outdoors, the outside of the protective sleeve is inevitably and gradually stained with dust, and the transparency of the protective sleeve is inevitably worse and worse along with the increase of time. Therefore, the valve rod protective sleeve made of the light-transmitting material cannot be widely popularized and used on site due to the fact that the valve rod height, namely the valve opening degree, cannot be observed clearly for a long time in an all-round and long-distance mode.

Disclosure of Invention

The utility model aims at providing a several kinds of simple structure, preparation are easy, can guarantee that the valve rod normally works, especially can be long-term, remote, all-round, clear observe the valve rod highly be the valve rod protective sheath of the several kinds of structures of the degree of opening of valve and be equipped with the valve of this protective sheath.

The utility model discloses a realize like this: a valve rod position indicating ring is arranged outside the valve rod protective sleeve, and when the valve rod ascends and descends due to opening and closing of the valve, the indicating ring ascends and descends synchronously along with the ascending and descending of the valve rod. The synchronous lifting method and structure of the indicating ring and the valve rod are various, one is a magnetic attraction method, the protective sleeve is made of non-magnetic materials such as plastics and aluminum, a magnet is fixedly arranged at the top of the valve rod in the sleeve, and the indicating ring outside the sleeve is made of steel or other magnetic materials. When the valve rod moves up and down in the sleeve, the indicating ring outside the sleeve moves up and down along with the magnet. The magnetic attraction method can also be made into a plurality of cylinders of telescopic sleeves, when the telescopic sleeves are made, the top cover of the sleeve body can be made of magnetic materials, and when the valve rod descends, the magnet at the top of the valve rod can attract the valve rod to descend firstly. The second method is a needling method: two through grooves are formed in two sides of the protective sleeve, a pointer capable of rotating relative to the valve rod is installed at the top end of the valve rod, two ends of the pointer penetrate out of the protective sleeve through the through grooves, the indicating ring is installed at two ends of the pointer, and when the valve rod goes up and down, the valve rod drives the pointer and the pointer drives the indicating ring to go up and down synchronously. The protective sleeve is likely to be elastically deformed after being grooved at two sides, and therefore an anti-deformation reinforcing ring can be added at a necessary position. Thirdly, a rope traction method: the top of the valve rod is tied with a rope, the rope passes through the side part of the top end of the protective sleeve to the side part of the bottom of the protective sleeve and then returns to the side surface of the upper part of the protective sleeve through another pulley, the position corresponding to the top of the valve rod is connected with an indicating ring, a rope is connected behind the indicating ring, and a spring or a gravity hammer is connected behind the rope. When the valve rod descends, the valve rod drives the rope and the rope drives the indicating ring to descend synchronously (the spring is pulled at the moment), and when the valve rod ascends, the spring or the gravity hammer drives the rope and the rope drives the indicating ring to descend. (the rope can be 1 or 2 to 3.) the protective sleeve by the magnetic attraction method and the pointer method can also be made into a telescopic type.

Drawings

Fig. 1 is a front view of a schematic structural diagram of a valve rod and a valve rod protection sleeve of a magnetic suction method single-cylinder structure according to the present invention.

Fig. 2 is a front view of a schematic structural diagram of a valve stem and a valve stem protection sleeve of a magnetic attraction telescopic structure according to the present invention. The figure is a 2-cylinder type, and the structure of a plurality of cylinders is similar.

Fig. 3 is a front view of a structure of a valve stem and a valve stem protection sleeve of the pointer type structure.

Fig. 4 isbase:Sub>A cross-sectional view taken along the planebase:Sub>A-base:Sub>A in fig. 3.

Fig. 5 is a partially enlarged view of fig. 3.

Fig. 6 is a schematic view of a through groove of a valve stem protection sleeve of the pointer structure shown in fig. 3.

Fig. 7 is a schematic view of a valve stem protection sleeve of a rope pulling structure according to the present invention.

In the figure:

1: hand wheel fixing nut 2: fastener 3: valve rod 4: a protective sleeve body 4b, a section 2 c of the telescopic protective sleeve: combined protective sleeve chassis 5: the indicating ring 6: the top cover 7: fastener 8: magnet 9: non-magnetic gasket 10: gasket 11: pointer 12: pointer shaft 13: reinforcing ring 14: through slots 15 on the sock: spring 16: pulley 17: rope 18: rope fastening ring

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Figure 1 is the valve rod protective sleeve of magnetic suction method of valve. The main components include a protective sleeve 4, a magnet 8 and an indicator ring 5. The protective sleeve body 4 is sleeved on the valve rod 3 and fixed on the hand wheel fixing nut 1 through the fastener 2, the magnet 8 is fixed on the valve rod 3 through the fastener 7 and the non-magnetic gasket, and the indicating ring 5 is attracted by the magnet 8 through the protective sleeve body 4 and ascends and descends along with the ascending and descending of the valve rod. The protective sleeve is externally coated with marks of the upper dead point and the lower dead point of the valve rod, a certain number of small grids (for example, 10 small grids) can be drawn between the upper dead point and the lower dead point, and an operator can see the closing condition of the valve at a remote place. Because it has only one cylinder, it can be called single-cylinder protective sleeve.

Fig. 2 is a retractable magnetic attraction protective sleeve. The sleeve body 4 consists of a 1 st section 4 of a telescopic sleeve combined sleeve body, a 2 nd section 4b of a telescopic combined sleeve and a combined protective sleeve chassis 4c, the top cover 6 is made of magnetic materials such as steel or embedded with the magnetic materials, and the rest parts are the same as those in the figure 1. When the valve rod descends, the magnet magnetic force attracts the indicating ring to descend, and simultaneously attracts the 2 nd section 4b of the sleeve body to descend, when the indicating ring descends to a certain height, the 2 nd section 4b of the sleeve body touches the bottom, and at the moment, the valve rod increasing force overcomes the attraction between the magnet 8 and the top cover 6 to continue descending. The sock chassis 4c is a possible choice for different ways of manufacturing the sock body. The rest items are the same as the single-cylinder protective sleeve.

Fig. 3 is a front view of the valve stem and the valve stem protection sleeve of the pointer structure provided by the invention. The main components are composed of a protective sleeve body 4 with a through groove 12, a pointer 11 and an indicating ring 5. The protective sheath body 4 cover is fixed on hand wheel fixation nut 1 at valve rod 3 and through fastener 2, and pointer 11 passes through pointer shaft 12 to be installed at valve rod 3 top, and its point portion stretches out the protective sheath and leads to the groove outward. The pointer can rotate around the pointer shaft and can move up and down along with the valve rod in the through groove of the sleeve body. The indicating ring 5 is fixed at the tip of the pointer outside the sleeve body. When the valve rod goes up and down, the pointer drives the indicating ring to go up and down, and if the sleeve body rotates, the pointer can also rotate along with the sleeve body. The valve rod and the valve rod protective sleeve of the pointer type structure can also be made into a telescopic type.

Fig. 7 is a front view of a valve stem boot of a rope pulling arrangement according to the present invention. The main components of the device mainly comprise a protective sleeve body 4, an indicating ring 5, a pulley 16 and a rope 17. The rope is tied on a rope tying ring 18 which can rotate on the top of the valve rod 3, the rope 17 passes through the side part of the top end of the sleeve body 4 to the side part of the bottom of the protective sleeve and then returns to the side surface of the upper part of the protective sleeve through another pulley, the indicating ring 5 is connected at the position corresponding to the top of the valve rod 3, the back of the indicating ring 5 is also connected with a rope, and the back of the rope is connected with a spring 15 or a gravity hammer. When the valve rod 3 descends, the valve rod 3 drives the rope 17 and the rope 17 drives the indicating ring 5 to descend synchronously (the spring 15 is pulled at the moment), and when the valve rod 3 ascends, the spring 15 or the gravity hammer drives the rope and the rope drives the indicating ring to descend. (the number of the ropes may be 1 or 2 to 3.)

The bottom structures of the sleeve bodies of the schemes can be universal. The sleeve body can be fixed on the hand wheel by using a fastener shown in the figure, and other modes such as threads, binding bands and the like can also be used. When there is no opening above the cover and the bottom of the cover is well sealed, the necessary breathing hole should be set in the right position in consideration of the air flow problem caused by the lifting of the valve rod.

Of the above 3 schemes, the 1 st magnetic attraction method is the simplest to implement, and thus can be used in most cases. It also has disadvantages: the sleeve body material cannot use steel which is most easily obtained and has high strength, but only can use non-magnetic materials such as plastics or aluminum and the like; secondly, the cleaning requirement outside the sleeve body is highest, and the sleeve body cannot be too dirty, otherwise the up-down lifting of the indicating ring can be influenced. The 2 nd pointer method is the most reliable and can use steel, but 2 through grooves are arranged on two sides of the pointer method, and although elastic shielding leaf sheets which do not influence the lifting of the pointer and the indicating ring can be arranged beside the through grooves, water and dust can enter the sleeve. The 3 rd rope drawing method does not have the above-mentioned disadvantages, but its structure is slightly complicated. The scheme can be selected for different requirements.

The sock chassis 4c is a possible choice for different ways of manufacturing the sock body. The rest items are the same as the single-cylinder protective sleeve.

Whatever the mode of various protective sheaths, the connection and fixation of the chassis and the hand wheel or the hand wheel gland nut can be various forms such as a fastener, a thread, a binding belt and the like. The various forms of fixation described in the figures are interchangeable and may be used in combination.

Various protective sheaths of whatever mode, the protective sheath is coated with the mark of the upper dead point and the lower dead point of the valve rod, and a certain number of equal division small lattices (for example, 10 small lattices) can be drawn between the upper dead point and the lower dead point. In particular, the cells can be divided according to the flow area, which is more convenient for workers to operate.

During valve design, production, can join in marriage this type of protective sheath. And the valve rod protective sleeve is processed and configured during valve production, so that the valve is simpler, better in quality and lower in cost.

Claims

1. The utility model provides a valve rod protective sheath and be equipped with valve of this protective sheath that dispose and indicate ring which characterized by: the main components of the protective sleeve are as follows: the device comprises a sleeve body which is sleeved on the valve rod and is fixedly or movably fixed on a hand wheel or a hand wheel fixing nut, an indicating ring which is arranged outside the sleeve body and can lift along with the valve rod, and an indicating ring driving device, wherein when the valve rod lifts, the indicating ring and the valve rod lift synchronously.

2. A valve stem boot and a valve equipped with the boot as defined in claim 1, wherein: the synchronous lift of the indicating ring of protective sheath and valve rod can be realized with the magnetism method of inhaling: the sleeve body of the protective sleeve is made of non-magnetic materials such as plastics or aluminum, the indicating ring is made of magnetic materials such as steel, the driving indicating ring is a magnet which is arranged in the sleeve and fixed at the top of the valve rod, and when the valve rod goes up and down, the magnet attracts the indicating ring to go up and down simultaneously.

3. A valve stem boot and a valve equipped with the boot as defined in claim 1, wherein: when the protective sleeve is made into a multi-section telescopic type, the top cover of the sleeve body can be made of magnetic materials or inlaid with the magnetic materials, and when the valve rod descends, the magnet at the top of the valve rod can attract the valve rod to descend firstly.

4. A valve stem boot and valve equipped with the boot as defined in claim 1, wherein: the synchronous lifting of the indicating ring and the valve rod can be realized by a pointer method: two through grooves are formed in two sides of the protective sleeve, a pointer capable of rotating relative to the valve rod is installed at the top end of the valve rod, the two ends of the pointer penetrate out of the protective sleeve through the through grooves, the indicating ring is installed at two ends of the pointer, and when the valve rod goes up and down, the valve rod drives the pointer and the pointer drives the indicating ring to go up and down synchronously.

5. A valve stem shroud and valve equipped with the shroud as claimed in claim 4, wherein: in order to prevent the protective sleeve from deforming after being slotted, a reinforcing ring for preventing the protective sleeve from deforming can be added at a proper position of the protective sleeve.

6. A valve stem boot and a valve equipped with the boot as defined in claim 1, wherein: the synchronous lifting of the indicating ring and the valve rod can be realized by a rope traction method: the top of the valve rod is connected with a rope, the direction of the valve rod is changed through the two pulleys, the indicating ring is connected with the indicating ring, a spring or a gravity hammer is connected with the rope behind the indicating ring, when the valve rod descends, the valve rod drives the rope and the rope to drive the indicating ring to descend synchronously, and when the valve rod ascends, the spring or the gravity hammer drives the rope and the rope to drive the indicating ring to ascend.

7. A valve stem boot and a valve equipped with the boot as defined in claim 1, wherein: the small grid division between the upper dead point and the lower dead point outside the sleeve body can be divided according to the valve overflowing area, and can also be equally divided according to the height of the valve rod and the overflowing area.

8. The valve stem protective sleeve and the valve equipped with the protective sleeve as claimed in claim 1, wherein the protective sleeve is equipped to become the valve equipped with the protective sleeve when the valve is designed and produced; the protective sheath also can regard as the product alone, for the valve that does not equip the protective sheath originally is equipped with.