CN217056565U - Structure for preventing valve rod from blowing out - Google Patents
Structure for preventing valve rod from blowing out Download PDFInfo
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- CN217056565U CN217056565U CN202220979610.0U CN202220979610U CN217056565U CN 217056565 U CN217056565 U CN 217056565U CN 202220979610 U CN202220979610 U CN 202220979610U CN 217056565 U CN217056565 U CN 217056565U
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- safety
- valve rod
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Abstract
The utility model discloses a valve rod blowout prevention structure, which comprises a valve body, a valve rod, a packing pad and a safety plug screw; the top of the valve body forms a filler space, and a flow passage is formed inside the valve body; the packing gasket is arranged at the bottom end of the packing space and used for sealing packing, one end of the valve rod penetrates through the packing space and the packing gasket and extends into the valve body, and the other end of the valve rod extends to the outer side of the valve body; the valve body and the packing pad are respectively provided with an installation channel and an installation groove corresponding to the safety plug screw, and the installation channel and the installation groove are used for installing the safety plug screw; the utility model can realize the limit of the packing pad through the installation between the safety screw plug and the installation groove; whether liquid leakage or material leakage exists can be judged through the safety screw plug; dismantle safe plug screw, whether the position that can also observe the packing pad produces the displacement, be convenient for judge and reveal the reason.
Description
Technical Field
The utility model relates to the technical field of valves, concretely relates to prevent that valve rod blows off structure.
Background
Valve products in the mechanical manufacturing industry usually open or close a fluid channel by rotating a valve rod and a valve core, and a sealing state is required to be kept between the valve rod and a valve body.
In current chemical industry and light industry, valve structure is used in many places, the most common one is exactly ordinary ball valve rod, be provided with a valve rod on the through-hole of valve body, there is the boss on the valve rod, under the normal condition of valve body internal pressure, the valve rod can not the departure, but under the condition that valve body internal pressure risees unusually, owing to do not set up on the valve rod and the safety device between the valve body, the condition that risees unusually can make the danger that the valve rod flew out in the valve, this can bring serious hidden danger for safety in production. Therefore, a need exists for a valve structure that is highly safe and simple in construction.
In addition, a valve rod of the valve is one of important parts of the valve, the sealing effect on the valve rod is one of important indexes for determining the quality of the valve, the existing valve rod sealing is generally that a packing sealing device is sleeved on the valve rod, such as a rubber sealing ring, the mode is simple in structure and convenient and easy to use, but under the working conditions of long-term use or temperature alternation, the liquid and the packing part are often leaked.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a utility model aims at providing a prevent that valve rod blows off structure.
In order to achieve the purpose of the utility model, the utility model adopts the technical proposal that: a valve rod blowout prevention structure comprises a valve body, a valve rod, a packing pad and a safety plug screw; the top of the valve body forms a filler space, and a flow passage is formed inside the valve body; the packing gasket is arranged at the bottom end of the packing space and used for sealing packing, one end of the valve rod penetrates through the packing space and the packing gasket and extends into the valve body, and the other end of the valve rod extends to the outer side of the valve body;
the valve body and the packing pad are respectively provided with an installation channel and an installation groove corresponding to the safety plug screw, and the installation channel and the installation groove are used for installing the safety plug screw.
Wherein, the safety screw plug is made of rigid material; preferably, the safety screw plug is made of stainless steel material; optimally, the safety screw plug is 316L of molybdenum-containing stainless steel, has good performance of resisting chloride corrosion, and is suitable for liquids with different pH values; when liquid leaks from the interior of the valve body, the corrosion effect of the leaked liquid on the safety bolt is low.
Preferably, the outer side of the safety plug screw is provided with a thread, and the safety plug screw is self-locked in the installation channel and the installation groove through the thread; the safety screw plug is made of rigid materials, and can realize locking with the mounting groove through the self-locking function of the safety screw plug, so that the limit of the packing pad can be realized; through the pressure of packing and the locking of safe plug screw, strengthened the fixed effect of packing pad greatly, avoided the condition that the pressure rises unusually in the valve, the valve rod drives the packing pad and flies out together.
Preferably, a sealing gasket is arranged between the installation channel and the safety plug screw, so that the sealing effect of the safety plug screw is enhanced.
Preferably, the safety screw plug is provided with a first sealing ring, so that the sealing effect of the safety screw plug is enhanced.
Preferably, a communicating channel penetrating through the safety plug screw is formed in the safety plug screw, one end of the communicating channel is communicated with the packing pad, and the other end of the communicating channel is locked through a screw.
Under the general condition, screw locking intercommunication passageway, when needing to detect whether weeping, then dismantle the screw, whether have the fluid to flow in observing the intercommunication passageway, can also judge through observing fluidic kind whether liquid reveals or packs in the valve body and reveal, need not to dismantle the valve body and judge, increased efficiency.
When liquid leaks, the liquid in the valve body fills the communication channel, and liquid leakage or material leakage is judged; and then the safety screw plug is disassembled, whether the position of the packing pad generates displacement or not is observed, and whether the leakage reason is the packing pad or not can be judged.
And when no liquid leaks, judging that no liquid leaks when no liquid is filled in the communication channel, and mounting the screw again.
Preferably, the axial direction of the communicating channel is perpendicular to the axial direction of the valve body, namely, the communicating channel is perpendicular to the moving direction of the valve rod, when liquid leakage or material leakage occurs, the valve rod can extrude the liquid leakage or the material leakage into the communicating channel during movement, and observation is facilitated.
Preferably, a limiting boss is arranged on the outer side wall of the valve rod and is positioned below the packing gasket; the lower surface of the packing pad is used for limiting the limiting boss.
Preferably, install the second sealing washer on the spacing boss, increased the sealed effect of valve rod.
Preferably, the axial direction of the safety screw plug is perpendicular to the axial direction of the valve body; the safety plug screw is perpendicular to the moving direction of the valve rod, when the internal pressure of the valve rises abnormally, the safety plug screw can effectively reduce the moving trend of the valve rod under the action of air pressure, so that the impact force on a packing pad and a packing space can be buffered, and the valve rod is prevented from flying out.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the utility model discloses a valve rod blowout prevention structure, wherein a valve body and a packing pad are respectively provided with an installation channel and an installation groove corresponding to a safety plug screw, and the installation channel and the installation groove are used for installing the safety plug screw; the limit of the packing pad can be realized through the installation between the safety screw plug and the installation groove;
2. the utility model discloses a valve rod blow-out prevention structure, which can judge whether liquid leakage or material leakage occurs through a safety screw plug; the safety screw plug is disassembled, whether the position of the packing pad generates displacement or not is observed, and the leakage reason is convenient to judge;
3. the utility model discloses a valve rod blowout prevention structure, which is simple in bullet installation, strong in reliability and long in service life; the cost is low, and the method is suitable for popularization and application.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of a position a of the present invention.
Wherein: 1. a valve body; 2. a valve stem; 3. a filler pad; 4. a safety plug screw; 5. a filler space; 6. a limiting boss; 7. sealing gaskets; 8. installing a channel; 9. mounting grooves; 10. a first seal ring; 11. a second seal ring; 12. a screw; 13. a communication channel.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understandable, the present invention is further described in detail with reference to the accompanying drawings and the detailed description, wherein the drawings are simplified schematic drawings, which illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention, and it is to be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Referring to fig. 1 and 2, a valve stem blowout prevention structure includes a valve body 1, a valve stem 2, a packing pad 3 and a safety plug screw 4; the top of the valve body 1 forms a filler space 5, and a flow passage is formed inside the valve body; the packing pad 3 is arranged at the bottom end of the packing space 5 and used for sealing packing, one end of the valve rod 2 penetrates through the packing space 5 and the packing pad 3 and extends into the valve body 1, and the other end of the valve rod extends to the outer side of the valve body 1;
the valve rod 2 controls the opening or closing of the flow passage of the valve body 1 by moving up and down.
A limiting boss 6 is arranged on the outer side wall of the valve rod 2, and the limiting boss 6 is positioned below the packing pad 3; the lower surface of the packing pad 3 is used for limiting the limiting boss 6; and a second sealing ring 11 is arranged on the limiting boss 6.
The valve body 1 and the packing pad 3 are respectively provided with an installation channel 8 and an installation groove 9 corresponding to the safety plug screw 4; the outer side of the safety plug screw 4 is provided with threads, and the safety plug screw 4 is self-locked in the installation channel 8 and the installation groove 9 through the threads; the safety screw plug 4 is made of 316L stainless steel.
The axial direction of the safety screw plug 4 is perpendicular to the axial direction of the valve body 1; because the safety plug screw 4 is made of rigid materials, the locking between the safety plug screw and the mounting groove 9 can be realized through the self-locking function of the safety plug screw, and therefore the limit of the packing pad 3 can be realized.
A sealing gasket 7 is further arranged between the installation channel 8 and the safety plug screw 4, a first sealing ring 10 is installed on the safety plug screw 4, and the sealing performance between the safety plug screw 4 and the installation channel 8 is guaranteed.
A communication channel 13 which penetrates through the safety screw plug 4 is formed in the safety screw plug 4, and the axial direction of the communication channel 13 is vertical to the axial direction of the valve body 1; one end of the communicating channel 13 is communicated with the packing pad 3, and the other end of the communicating channel is locked by a screw 12.
Generally, the screw 12 is locked with the communicating channel 13, when liquid leakage needs to be detected, the screw 12 is disassembled, and whether liquid flows out from the communicating channel 13 is observed;
when liquid leaks, the liquid in the valve body 1 fills the communication channel 13, and then liquid leakage or material leakage is judged; dismantle safe plug screw 4, observe the position of packing pad 3 and can judge whether the reason of revealing is packing pad 3.
And when no liquid leaks, if no liquid is filled in the communication channel 13, judging that no liquid leaks, and mounting the screw 12 again.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific cases.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A valve rod blowout prevention structure is characterized by comprising a valve body (1), a valve rod (2), a packing pad (3) and a safety plug screw (4); the top of the valve body (1) forms a packing space (5), and a flow channel is formed inside the valve body; the packing gasket (3) is arranged at the bottom end of the packing space (5) and used for sealing packing, one end of the valve rod (2) penetrates through the packing space (5) and the packing gasket (3) and extends into the valve body (1), and the other end of the valve rod extends to the outer side of the valve body (1);
the valve body (1) and the packing pad (3) are respectively provided with an installation channel (8) and an installation groove (9) corresponding to the safety plug screw (4), and the installation channel (8) and the installation groove (9) are used for installing the safety plug screw (4).
2. The blowout prevention structure of the valve stem according to claim 1, wherein the safety plug screw (4) is threaded on the outer side, and the safety plug screw (4) is self-locked in the installation channel (8) and the installation groove (9) through threads.
3. A valve stem blow-out prevention structure as defined in claim 1 wherein a sealing gasket (7) is further provided between the mounting passage (8) and the safety plug (4).
4. A valve stem blow-out prevention structure as claimed in claim 1, wherein a first seal ring (10) is mounted on the safety plug (4).
5. The blowout prevention structure of the valve stem according to claim 1, wherein the safety screw plug (4) is provided with a communication channel (13) extending through the safety screw plug (4), one end of the communication channel (13) is connected to the packing pad (3), and the other end is locked by a screw (12).
6. A stem blow-out prevention structure according to claim 5, wherein an axial direction of the communication passage (13) is arranged perpendicular to an axial direction of the valve body (1).
7. The valve rod blowout prevention structure according to claim 1, wherein a limiting boss (6) is arranged on the outer side wall of the valve rod (2), and the limiting boss (6) is positioned below the packing pad (3); the lower surface of the packing pad (3) is used for limiting the limiting boss (6).
8. The stem blow-out prevention structure of claim 7, wherein a second seal ring (11) is mounted on the limit boss (6).
9. A stem blow-out prevention structure according to claim 1, wherein an axial direction of the safety plug (4) is disposed perpendicular to an axial direction of the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220979610.0U CN217056565U (en) | 2022-04-26 | 2022-04-26 | Structure for preventing valve rod from blowing out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220979610.0U CN217056565U (en) | 2022-04-26 | 2022-04-26 | Structure for preventing valve rod from blowing out |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217056565U true CN217056565U (en) | 2022-07-26 |
Family
ID=82473190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220979610.0U Active CN217056565U (en) | 2022-04-26 | 2022-04-26 | Structure for preventing valve rod from blowing out |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217056565U (en) |
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2022
- 2022-04-26 CN CN202220979610.0U patent/CN217056565U/en active Active
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