CN218543226U - Soft sealing gate valve - Google Patents
Soft sealing gate valve Download PDFInfo
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- CN218543226U CN218543226U CN202222986915.7U CN202222986915U CN218543226U CN 218543226 U CN218543226 U CN 218543226U CN 202222986915 U CN202222986915 U CN 202222986915U CN 218543226 U CN218543226 U CN 218543226U
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Abstract
The utility model relates to a gate valve technical field, a soft sealing gate valve, including valve body, valve gap, gland, packing, hand wheel, valve rod and valve plate, be equipped with the passageway that supplies the medium to flow in the valve body, be equipped with the slot under the passageway is located the valve gap, the ditch inslot is equipped with the boss, and the boss top is the arc surface structure, the valve gap constitutes an activity chamber with the valve body above the boss, and hand wheel, valve rod and valve plate are to last and down connected, and the valve plate can reciprocate in activity chamber and slot, and valve plate outside parcel has the elastic sealing layer, and the valve plate is down back, and the elastic sealing layer of first half both sides of valve plate can the butt at the boss lateral wall, and the elastic sealing layer of valve plate the latter half both sides can the butt on slot lateral wall and bottom surface, constitutes axial, radial two-way joint seal structure. The utility model discloses help solving current seal structure and warping the influence because of the casting easily, elasticity compression volume is not enough when leading to sealed, sealed effect poor problem.
Description
Technical Field
The utility model belongs to the technical field of the gate valve technique and specifically relates to a soft sealing gate valve is related to.
Background
In the control of fluid pipelines, gate valves are used to achieve fluid interception and control. The gate valves on the market are various in types and mainly divided into hard seal gate valves and soft seal gate valves, wherein the soft seal gate valves are simple in structure and convenient to operate, and therefore the soft seal gate valves are widely applied.
The stainless steel 304 groove soft sealing gate valve disclosed in Chinese patent CN202122336757.6 comprises a valve body, the fixed surface of the valve body is provided with a valve cover, the inside of one end of the valve cover is provided with a valve rod, the bottom end of the valve rod is fixedly connected with a valve plate, the valve body is designed as a flat valve base, the inside of the valve body is coated with epoxy resin, the valve body is made of stainless steel 304, the top end of the valve rod is rotatably connected with a valve rod nut, the outer wall of the top end of the valve rod is provided with threads, the valve rod is rotatably connected with the valve rod nut through the threads, the inside of the top end of the valve rod is fixedly connected with a connecting rod, the top end of the connecting rod is fixedly connected with a hand wheel, the top end of the hand wheel is fixedly provided with a plurality of groups of anti-slip strips, and a top pipe of the valve cover is fixedly provided with a gland nut.
In the technical scheme, the abutting surfaces between the two sides of the valve plate and the groove are in a conical surface structure, axial sealing is formed by the abutting surfaces of the valve plate and the groove in the axial direction, but the axial sealing surface structure is easy to deform in the casting process, and the compression amount is insufficient when the valve plate and the groove are elastically abutted due to expansion, so that the sealing performance is insufficient, and water leakage is easy to occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a soft sealing gate valve helps solving current seal structure and warp the influence because of the casting easily, and elastic compression volume is not enough when leading to sealing, the poor problem of sealed effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a soft sealing gate valve, includes valve body, valve gap, gland, hand wheel, valve rod and valve plate, be equipped with the passageway that supplies the medium to flow in the valve body, the passageway is located and is equipped with the slot under the valve gap, and the ditch inslot is equipped with the boss, and the boss top is the arc surface structure, the valve gap constitutes an activity chamber with the valve body above the boss, and hand wheel, valve rod and valve plate are connected extremely from top to bottom, and the valve plate can reciprocate at activity chamber and ditch inslot, and the valve plate outside parcel has the elastic sealing layer, and the valve plate is down back, and the elastic sealing layer of valve plate upper half both sides can the butt at the boss lateral wall, and the elastic sealing layer of valve plate latter half both sides can the butt on slot lateral wall and bottom surface, constitutes axial, ascending two-way joint seal structure radially.
On the basis of the technical scheme, in order to reduce the influence of poor sealing effect caused by easy deformation of longitudinal inclined plane casting and poor control of molding quality, the groove is of a vertical groove hole structure, and the end surface of the inner side of the groove is of a vertical surface structure.
On the basis of the technical scheme, in order to improve the radial abutting sealing area, two sides of the top of the valve plate are provided with transverse flanges, and the cross section of the valve plate is a T-shaped outline.
On the basis of the technical scheme, in order to guarantee under sealed effect the prerequisite, poppet valve plate structural stability, the inside base plate that is made by the cast iron material that has of valve plate, the base plate outside has the elastic sealing layer of being made by the rubber material.
On the basis of the technical scheme, the valve rod is in threaded connection with the valve cover.
On the basis of the technical scheme, the top of the packing gland is provided with a dustproof cover.
Compared with the prior art, the utility model discloses at least, including following advantage:
the utility model discloses a terminal surface is the slot of vertical face structure in setting up in the passageway in the valve body, and set up the boss in the slot, regard the arc surface at boss top as radial seal face, an elasticity butt for the elastic sealing layer in the cooperation valve plate outside, thereby constitute radial seal structure, this radial seal structure is in coordination with the axial seal structure combined action between valve plate bottom and the slot, compare in current structure and rely on axial seal completely, and the shaping deviation because of the inclined plane precision in the casting process brings easily is not enough, this scheme can alleviate casting pressure, promote the product leakproofness.
Drawings
FIG. 1 is a front cross-sectional view of a soft seal gate valve;
FIG. 2 is a front cross-sectional view of the valve body of FIG. 1;
FIG. 3 is a side cross-sectional view of the valve body of FIG. 1;
fig. 4 is a side sectional view of the soft seal gate valve.
The figure is marked with: 1. a valve body; 11. a channel; 12. a trench; 13. a boss; 14. a movable cavity; 2. a valve cover; 3. a packing gland; 4. a hand wheel; 5. a valve stem; 6. a valve plate; 61. a first sealing region; 62. a second sealing area; 63. a third sealing zone; 7. and a dust cover.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following detailed description is made with reference to the accompanying drawings and specific embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from the embodiments described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the one element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Referring to fig. 1 to 4, the present embodiment discloses a soft seal gate valve, which includes a valve body 1, a valve cap 2, a packing gland 3, a sealing packing, a hand wheel 4, a valve rod 5 and a valve plate 6.
The valve body 1 is used as a base, a channel 11 for medium flowing is arranged in the valve body 1, the channel 11 horizontally faces left and right, and penetrates through the valve body 1 to be connected with an external pipeline.
With reference to fig. 2 and 3, the channel 11 in the valve seat is located right below the valve cover 2, the groove 12 is a vertical groove structure, and the end surface of the inner side of the groove is a vertical plane structure, which helps to reduce the influence of poor sealing effect caused by easy deformation of longitudinal slope casting and poor molding quality control. The top of the inner side of the groove 12 is provided with two symmetrically arranged bosses 13, the bosses 13 transversely extend inwards, and the top surfaces of the bosses 13 are in a circular arc line structure in a side view.
The valve cover 2 and the valve body 1 form a movable cavity 14 above the boss 13, the valve plate 6 is fixed at the bottom of the valve rod 5 through T-shaped bolt connection, the valve plate 6 is of a plate body structure facing front and back, the valve plate is perpendicular to the channel 11, the valve plate 6 can move up and down in the movable cavity 14 and the groove 12, and the outer side of the valve plate 6 is wrapped by an elastic sealing layer.
Further, in order to guarantee under sealed effect the prerequisite, promote valve plate 6 structural stability, valve plate 6 is inside to have the base plate of being made by the cast iron material, and the base plate outside has the elastic sealing layer of being made by the rubber material.
Further, in order to improve the radial abutting sealing area, two sides of the top of the valve plate 6 are provided with transverse flanges, and the cross section of the valve plate 6 is a T-shaped profile. The valve plate 6 has a downwardly extending flange at its lower end. Through the arrangement of the flange, the elastic deformation amount of the key area is large, which is beneficial to dealing with the stress which needs to be overcome by the sealing structure of the key area, and the sealing effect is further guaranteed.
In a specific implementation process, after the valve plate 6 descends to a sealing position, the bottom of the transversely extending flanges at two sides of the upper half part of the outer elastic sealing layer of the valve plate 6 can abut against the top surface of the boss 13 to form abutting sealing between two horizontal planes, so that a first sealing area 61 is formed; two sides of the upper half part of the valve plate 6 are abutted against the vertical side wall of the upper half part of the groove 12 to form a second sealing area 62; the bottom flange of the valve plate 6 abuts against the bottom surface of the groove 12, forming an abutting seal between two horizontal planes, thus constituting a third sealing zone 63. In addition, the front side and the rear side of the lower half part of the turning plate are abutted with the side wall of the groove 12 to form an axial sealing structure.
It should be noted that when the valve plate 6 is closed, the primary sealing function is the first sealing area 61 and the third sealing area 63, i.e. the overall sealing is mainly based on radial sealing, which is different from the prior art. Of course, in order to ensure sufficient sealing, the scheme is provided with an axial and radial bidirectional combined sealing structure.
Furthermore, the top of the packing gland 3 is provided with a dust cover 7, so that a dust prevention effect can be achieved on a sealing structure at the bottom.
The soft seal gate valve is not limited to stainless steel, but may be made of ductile iron, copper, or the like.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a soft sealing gate valve, includes valve body (1), valve gap (2), gland (3), sealing filler, hand wheel (4), valve rod (5) and valve plate (6), its characterized in that, be equipped with in valve body (1) and supply passageway (11) that the medium flows, passageway (11) are located and are equipped with slot (12) under valve gap (2), are equipped with boss (13) in slot (12), and boss (13) top is the arc surface structure, valve gap (2) and valve body (1) constitute one activity chamber (14) above boss (13), and hand wheel (4), valve rod (5) and valve plate (6) are to last and connect down, and valve plate (6) can reciprocate in activity chamber (14) and slot (12), and valve plate (6) outside parcel has the elasticity sealing layer, and valve plate (6) are down the back, and the elasticity sealing layer of valve plate (6) top half both sides can the butt on boss (13) lateral wall, and the elasticity of valve plate (6) the latter half both sides can the butt on slot (12) lateral wall and bottom surface, constitute axial, radial two-way joint seal structure.
2. A soft seal gate valve according to claim 1, characterized in that the groove (12) is a vertical slot structure, and the inner side end face is a vertical face structure.
3. A soft seal gate valve according to claim 2, characterized in that the valve plate (6) is provided with transverse flanges on both sides of the top, the cross-sectional view of the valve plate (6) being a T-shaped profile.
4. A soft seal gate valve according to claim 1, characterized in that the valve plate (6) has a base plate made of cast iron inside and an elastic sealing layer made of rubber outside.
5. A soft sealing gate valve according to claim 1, characterized in that the valve stem (5) is screwed to the valve cover (2).
6. A soft sealing gate valve according to claim 1, characterized in that the packing gland (3) is provided with a dust cap (7) on top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222986915.7U CN218543226U (en) | 2022-11-08 | 2022-11-08 | Soft sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222986915.7U CN218543226U (en) | 2022-11-08 | 2022-11-08 | Soft sealing gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218543226U true CN218543226U (en) | 2023-02-28 |
Family
ID=85261227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222986915.7U Active CN218543226U (en) | 2022-11-08 | 2022-11-08 | Soft sealing gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218543226U (en) |
-
2022
- 2022-11-08 CN CN202222986915.7U patent/CN218543226U/en active Active
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