CN219432483U

CN219432483U - Superhigh temperature valve rod guider

Info

Publication number: CN219432483U
Application number: CN202320450509.0U
Authority: CN
Inventors: 胡中; 姜卫平; 胡逸云
Original assignee: Wuxi Zhongcheng Automatic Control Valve Co ltd
Current assignee: Wuxi Zhongcheng Automatic Control Valve Co ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-07-28
Anticipated expiration: 2033-03-10

Abstract

The utility model relates to an ultra-high temperature valve rod guiding device which comprises a rod sleeve and a valve rod penetrating through the rod sleeve, wherein a connecting block is arranged at the proximal end of the rod sleeve, the connecting block is of a hollow structure, a lubricating bearing is arranged in the connecting block, the valve rod penetrates through the lubricating bearing in a sliding manner, the proximal end of the connecting block is connected with a connecting plate, at least four claw parts are arranged at the proximal end of the connecting plate, and the valve rod is clamped by the proximal ends of the four claw parts in a sliding manner. The ultrahigh-temperature valve rod guiding device comprises a rod sleeve, wherein the valve rod penetrates through the rod sleeve, and is respectively in sliding connection with a lubricating bearing in a connecting block and in sliding connection with a claw part at the proximal end of the connecting plate, so that a guiding effect on the valve rod is formed, the structure is simple, the valve rod is prevented from being blocked due to contact between the valve rod and the rod sleeve and the valve body, and the sealing effect of the valve body is ensured.

Description

Superhigh temperature valve rod guider

Technical Field

The utility model relates to the technical field of valve rods, in particular to an ultrahigh-temperature valve rod guiding device.

Background

At present, the domestic valve industry is becoming more and more popular, the manufacturing process of the valve has higher requirements on processing precision, and once the valve fails, the valve is difficult to repair.

Under the superhigh temperature working condition, the material expansion amount can not be accurately controlled, the gap between the valve rod and the valve body is difficult to control, the gap is too small to be blocked easily, and the gap is too large to vibrate easily so as not to play a role in guiding. The valve rod among the prior art is led and is adopted lubricated graphite of sealed ring cover structure inside lining or plastics generally, for example the chinese patent of utility model of document number CN108019528A, a guiding mechanism of novel valve rod is disclosed, guiding mechanism includes the guide holder, be equipped with the guide block groove on the guide holder, be equipped with a plurality of guide block and spring part in the guide block groove, the guide block is connected with the guide bar, the periphery of valve rod is equipped with the guide slot with guide bar matched with, one side of guide bar orientation guide slot is equipped with the rolling element, the surface of guide bar is equipped with the recess, the rolling element sets up in the recess and contradicts in the guide slot, the one end and the guide bar of guide block are connected, the other end supports the bottom in the guide block groove through the spring part, the guide block is along valve rod axis evenly distributed, symmetrical arrangement. According to the technical scheme, although the rolling elements are arranged in the guide grooves, the friction coefficient is reduced, the possibility of clamping between the valve rod and the guide grooves still exists, and the guide grooves and the rolling elements are difficult to replace if deformed and damaged.

Disclosure of Invention

In view of the above-described shortcomings of the prior art, it is an object of the present utility model to provide an ultra-high temperature valve stem guide apparatus that solves one or more of the problems of the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the ultrahigh-temperature valve rod guiding device comprises a rod sleeve and a valve rod penetrating through the rod sleeve, wherein a connecting block is arranged at the proximal end of the rod sleeve and is of a hollow structure, a lubricating bearing is arranged in the connecting block, the valve rod penetrates through the lubricating bearing in a sliding mode, a connecting plate is connected to the proximal end of the connecting block, at least four claw portions are arranged at the proximal end of the connecting plate, and the valve rod is clamped by the proximal ends of the claw portions in a sliding mode.

Further, one side, close to the valve rod, of the proximal end of the claw part is provided with an arc surface.

Further, the proximal end of the claw is rounded off near one side of the valve rod.

Further, the claw portions are annularly arranged at the proximal end of the connecting plate at intervals.

Further, the far end of the claw part is welded and connected with the connecting plate.

Further, the inner diameter of the connecting plate is the same as the inner diameter of the connecting block, and the inner diameter of the connecting block is larger than the outer diameter of the valve rod.

Further, the connecting block is connected with the connecting plate through at least four bolts.

Further, a screw hole is formed in the proximal end of the connecting block and is in threaded connection with the bolt.

Further, a groove for clamping the lubricating bearing is formed in the inner proximal end of the connecting block.

Further, the claw portion adopts nickel-based alloy, and wear-resistant ceramic materials are sprayed on the surface of the claw portion.

Compared with the prior art, the utility model has the following beneficial technical effects:

the ultrahigh-temperature valve rod guiding device comprises a rod sleeve, wherein the valve rod penetrates through the rod sleeve, and is respectively in sliding connection with a lubricating bearing in a connecting block and in sliding connection with a claw part at the proximal end of the connecting plate, so that a guiding effect on the valve rod is formed, the structure is simple, the valve rod is prevented from being blocked due to contact between the valve rod and the rod sleeve and a valve body, and the sealing effect of the valve body is ensured.

And (II) further, the connecting block is connected with the connecting plate through bolts, the connecting plate just covers the outlet of the groove, the lubrication bearing is prevented from being separated from the groove, the ultrahigh-temperature valve rod guiding device is convenient to detach and replace, the length of the groove is larger than that of the lubrication bearing, a space for thermal expansion is provided for the lubrication bearing, and the lubrication bearing is prevented from being blocked by the valve rod.

Drawings

Fig. 1 shows a schematic structural diagram of an ultra-high temperature valve stem guiding device according to an embodiment of the present utility model.

Fig. 2 shows a schematic bottom view of an ultra-high temperature valve stem guiding device according to an embodiment of the present utility model.

The reference numerals in the drawings:

1. a valve stem; 2. a rod sleeve; 3. a connecting block; 31. a groove; 32. lubricating the bearing; 33. a screw hole; 4. a claw portion; 41. round corners; 42. a cambered surface; 5. a connecting plate; 6. and (5) a bolt.

Detailed Description

For a better understanding of the utility model with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or essential characteristics thereof.

In the description of the present utility model, the positional or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the positional or positional relationship 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 elements 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 order to more clearly describe the structure of the above ultra-high temperature stem guide apparatus, the present utility model defines the terms "distal end" and "proximal end", taking fig. 1 as an example, the lower end of the stem sleeve 2 in fig. 1 is the proximal end, and the upper end of the stem sleeve 2 in fig. 1 is the distal end.

Example 1

Please refer to fig. 1 and 2, the ultra-high temperature valve rod guiding device comprises a rod sleeve 2, and a valve rod 1 passing through the rod sleeve 2, wherein a connecting block 3 is arranged at the proximal end of the rod sleeve 2, the connecting block 3 is provided with a hollow structure, a lubrication bearing 32 is arranged in the connecting block 3, the valve rod 1 slides through the lubrication bearing 32, a connecting plate 5 is connected with the proximal end of the connecting block 3, at least four claw parts 4 are arranged at the proximal end of the connecting plate 5, and the proximal end of the claw parts 4 slide and clamp the valve rod 1.

The following describes the specific structure of the claw portion 4 as follows:

referring to fig. 1 and 2, further, a cambered surface 42 is provided on a side of the proximal end of the claw portion 4, which is close to the valve stem 1, and the cambered surface 42 ensures that the claw portion 4 can completely fit the valve stem 1 when expanding or contracting.

Referring to fig. 1 and 2, further, the proximal end of the claw portion 4 is rounded 41 near the side of the valve rod 1, and the rounded 41 ensures that the valve rod 1 still slides smoothly when the claw portion 4 expands or contracts.

Referring to fig. 1 and 2, further, four claw portions 4 are annularly and equidistantly arranged at the proximal end of the connecting plate 5.

Referring to fig. 1 and 2, further, the claw portion 4 is welded to the connecting plate 5 at a distal end thereof.

Referring to fig. 1 and 2, further, the inner diameter of the connecting plate 5 is the same as the inner diameter of the connecting block 3, and the inner diameter of the connecting block 3 is larger than the outer diameter of the valve rod 1, so that the connecting plate 5 and the connecting block 3 are prevented from being expanded by heating and being blocked by the valve rod 1.

Referring to fig. 1 and 2, further, the connecting block 3 is connected to the connecting plate 5 by at least four bolts 6. Specifically, please continue to refer to fig. 1 and 2, the proximal end of the connecting block 3 is provided with a screw hole 33, and the bolt 6 passes through the connecting plate 5 to be in threaded connection with the screw hole 33.

Referring to fig. 1 and 2, further, a groove 31 into which the lubrication bearing 32 is engaged is formed at the proximal end of the inner side of the connection block 3. After the lubrication bearing 32 is clamped into the groove 31, the outlet of the groove 31 is just covered by the connecting plate 5, the lubrication bearing 32 is prevented from being separated from the groove 31, the length of the groove 31 is larger than that of the lubrication bearing 32, a space for thermal expansion is provided for the lubrication bearing 32, and the lubrication bearing 32 is prevented from being blocked with the valve rod 1.

Referring to fig. 1 and 2, further, the claw portion 4 is made of nickel-based alloy, and the surface of the claw portion 4 is coated with wear-resistant ceramic material, so as to improve toughness and impact resistance of the claw portion 4 and prolong the service life of the guiding device.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. Ultra-high temperature valve rod guider, its characterized in that: the ultrahigh-temperature valve rod guide device comprises a rod sleeve and a valve rod penetrating through the rod sleeve, wherein a connecting block is arranged at the proximal end of the rod sleeve and is of a hollow structure, a lubricating bearing is arranged in the connecting block, the valve rod penetrates through the lubricating bearing in a sliding mode, a connecting plate is connected with the proximal end of the connecting block, at least four claw parts are arranged at the proximal end of the connecting plate, and the proximal ends of the claw parts are used for sliding and clamping the valve rod.

2. The ultra-high temperature valve stem guide apparatus of claim 1, wherein: the proximal end of the claw part is provided with a cambered surface at one side close to the valve rod.

3. The ultra-high temperature valve stem guide apparatus of claim 2, wherein: the proximal end of the claw part is rounded off near one side of the valve rod.

4. The ultra-high temperature valve stem guide apparatus of claim 3, wherein: the claw parts are annularly arranged at the proximal end of the connecting plate at intervals.

5. The ultra-high temperature valve stem guide apparatus of claim 4, wherein: the far end of the claw part is welded and connected with the connecting plate.

6. The ultra-high temperature valve stem guide apparatus of claim 1, wherein: the inner diameter of the connecting plate is the same as that of the connecting block, and the inner diameter of the connecting block is larger than the outer diameter of the valve rod.

7. The ultra-high temperature valve stem guide apparatus of claim 6, wherein: the connecting block is connected with the connecting plate through at least four bolts.

8. The ultra-high temperature valve stem guide apparatus of claim 7, wherein: and the near end of the connecting block is provided with a screw hole which is in threaded connection with the bolt.

9. The ultra-high temperature valve stem guide apparatus of claim 6, wherein: and a groove for clamping the lubricating bearing is formed in the inner proximal end of the connecting block.

10. The ultra-high temperature valve stem guide apparatus of claim 1, wherein: the claw part adopts nickel-based alloy, and the surface of the claw part is sprayed with wear-resistant ceramic material.