CN219282573U - Novel needle valve without packing - Google Patents
Novel needle valve without packing Download PDFInfo
- Publication number
- CN219282573U CN219282573U CN202320242844.1U CN202320242844U CN219282573U CN 219282573 U CN219282573 U CN 219282573U CN 202320242844 U CN202320242844 U CN 202320242844U CN 219282573 U CN219282573 U CN 219282573U
- Authority
- CN
- China
- Prior art keywords
- needle valve
- sealing
- valve body
- valve rod
- packing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000012856 packing Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 239000000945 filler Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 210000004907 gland Anatomy 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of valves, in particular to a novel needle valve without packing, which comprises a valve body, a needle valve rod, a sealing cover and a handle, wherein the needle valve rod slides in the valve body; the needle valve rod is provided with a limit sealing step and is tightly matched with the valve body; the sealing cover is provided with a limit sealing groove which is tightly matched with the limit sealing step on the needle valve rod. The handle is twisted to move the needle valve stem up and down by the threads. The utility model has the advantages that: firstly, the traditional filling structure is removed, and the sealing structure of the oil cylinder is changed, so that the sealing performance is better; secondly, simple structure, low in manufacturing cost.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a novel needle valve without filling.
Background
The traditional needle valve comprises a soft seat or a hard seat needle valve, wherein the packing and a valve rod are sealed by pressing an internal packing gland, so that the packing forms an inter-shaft extrusion force on packing in a packing box, and the packing is deformed to realize sealing by the sealing specific pressure between the valve rod and the gland. If the needle valve works under the high-pressure working condition, the sealing structure cannot meet the requirement, and further the phenomena of running, overflowing, dripping and leaking are caused. In terms of sealing mechanism, the sealing belongs to forced sealing, in other words, the sealing belongs to a plugging type passive sealing, because the packing deforms under the action of the pressing force of the gland shaft, the elastic deformation force causes the sealing specific pressure to decrease from the outer side of the valve body to the inner side along the axial direction of the valve rod, and the leakage pressure of the medium decreases from the inner side to the outer side, so that the sealing effect is difficult to achieve. Structurally, the stuffing box is arranged on the top of the valve cover and outside the pressure-bearing shell, so that the integrity of the pressure-bearing shell of the valve serving as pressure-bearing equipment is destroyed, and the necessary result of stuffing leakage is caused from the beginning.
Therefore, the utility model provides a novel needle valve without filler, which adopts a sealing structure of an oil cylinder and does not need to add filler.
Disclosure of Invention
The present utility model aims to provide a novel needle valve without packing, which solves the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a novel need not needle valve of packing, includes valve body, needle valve pole, sealed lid and handle, and needle valve pole slides in the valve body, and the handle passes through the bolt fastening on needle valve pole, and sealed lid is fixed and is sealed to the valve body above the valve body, its characterized in that: the valve body is of an integrated structure, and the inner wall of the valve body is provided with four grooves capable of being provided with sealing rings for holes, so that no filler is required to be added; the needle valve rod is provided with a limit sealing step, and the needle valve rod is tightly matched with the valve body.
Preferably, the sealing cover is provided with a limit sealing groove which is tightly matched with the limit sealing step on the needle valve rod.
Preferably, the needle valve rod is provided with threads matched with the sealing cover.
Compared with the prior art, the utility model has the beneficial effects that: firstly, the traditional filling structure is removed, and the sealing structure of the oil cylinder is changed, so that the sealing performance is better; secondly, simple structure, low in manufacturing cost.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1. a valve body; 2. a sealing ring for the hole; 3. a needle valve stem; 301. a thread; 302. limiting and sealing the step; 4. sealing cover; 401. limiting and sealing the groove; 5. a handle.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the present utility model provides a technical solution: a novel needle valve without packing comprises a valve body 1, a needle valve rod 3, a sealing cover 4 and a handle 5, wherein the needle valve rod 3 slides in the valve body 1, the handle 5 is fixed on the needle valve rod 3 through a bolt, the sealing cover 4 is fixed above the valve body 1 and seals the valve body 1,
the valve body 1 is of an integrated structure, and the inner wall is provided with four grooves capable of being provided with sealing rings 2 for holes, so that no filler is required to be added; the needle valve rod 3 is provided with a limit sealing step 302, and the needle valve rod 3 is tightly matched with the valve body 1; the sealing cover 4 is provided with a limiting sealing groove 401 which is tightly matched with a limiting sealing step 302 on the needle valve rod 3, the needle valve rod 3 is provided with a thread 301 matched with the sealing cover 4, the needle valve rod 3 is moved up and down through the twisting handle 5, the limiting sealing step 302 moves in the limiting sealing groove 401, and the moving distance is ensured, because the needle valve rod 3 is tightly matched with the valve body 1 and the sealing cover 4 and is provided with a hole sealing ring 2, the filling material does not need to be added.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a novel need not needle valve of packing, includes valve body (1), needle valve pole (3), sealed lid (4) and handle (5), and needle valve pole (3) slide in valve body (1), and handle (5) are fixed on needle valve pole (3) through the bolt, and sealed lid (4) are fixed and are sealed valve body (1) above valve body (1), its characterized in that: the valve body (1) is of an integrated structure, and the inner wall of the valve body is provided with four grooves capable of being provided with sealing rings (2) for holes, so that no filler is required to be added; the needle valve rod (3) is provided with a limit sealing step (302), and the needle valve rod (3) is tightly matched with the valve body (1).
2. A novel, filler-free needle valve as claimed in claim 1, wherein: the sealing cover (4) is provided with a limit sealing groove (401) which is tightly matched with the limit sealing step (302) on the needle valve rod (3).
3. A novel, filler-free needle valve as claimed in claim 1, wherein: the needle valve rod (3) is provided with threads (301) matched with the sealing cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320242844.1U CN219282573U (en) | 2023-02-17 | 2023-02-17 | Novel needle valve without packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320242844.1U CN219282573U (en) | 2023-02-17 | 2023-02-17 | Novel needle valve without packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219282573U true CN219282573U (en) | 2023-06-30 |
Family
ID=86939844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320242844.1U Active CN219282573U (en) | 2023-02-17 | 2023-02-17 | Novel needle valve without packing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219282573U (en) |
-
2023
- 2023-02-17 CN CN202320242844.1U patent/CN219282573U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Kaitai Fluid Control System Co.,Ltd. Assignor: JIANGSU KAIAO MACHINERY MANUFACTURING Co.,Ltd. Contract record no.: X2024980014131 Denomination of utility model: A new type of needle valve without packing Granted publication date: 20230630 License type: Common License Record date: 20240905 |