CN209943566U - Glue injection valve - Google Patents
Glue injection valve Download PDFInfo
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- CN209943566U CN209943566U CN201920640343.2U CN201920640343U CN209943566U CN 209943566 U CN209943566 U CN 209943566U CN 201920640343 U CN201920640343 U CN 201920640343U CN 209943566 U CN209943566 U CN 209943566U
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- glue injection
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Abstract
A glue injection valve comprises: the valve body is provided with a glue injection channel and a valve hole; the valve core extends into the valve hole and is provided with a glue through hole; its characterized in that the valve opening is along the direction of stretching into of case including in proper order: the inner wall of the connecting section is provided with an internal thread; the tail part of the valve core is provided with an external thread matched with the internal thread; the flow-through section is provided with a smooth inner wall, and the aperture of the flow-through section is smaller than or equal to that of the connecting section; the middle part of the valve core is provided with a smooth outer wall which can be jointed with the flow section; the middle part of the valve core is provided with the glue through hole; the aperture of the sealing section is gradually reduced along the extending direction of the valve core; the valve core is provided with a head part which can be compacted on the sealing section and is tightly matched with the sealing section. The glue injection valve has good sealing performance and can be effectively applied to the pressurized plugging operation of high-pressure medium leakage.
Description
Technical Field
The utility model belongs to the technical field of the area is pressed and is blocked part, concretely relates to injecting glue valve.
Background
The pressurized leakage stoppage is that when various parts of equipment, flanges, pipelines, valves and the like of a production device leak, a clamp is arranged at the leaking part to form a sealed cavity, and then sealant is injected into the cavity by using an injection oil pump, a high-pressure oil pipe, a glue injection gun and a glue injection valve to fill the whole cavity space, so that the extrusion force of the sealant is balanced with the pressure of a leaking medium, and a new sealing structure is established to block each channel of a leaking pore and block the leakage of the medium.
The glue injection valve is a key device of the whole injection system. The glue injection valve is arranged at the fully-opened position after the glue injection valve is installed on the clamp, so that the medium effect of discharging the sealing cavity is achieved, and the excessive pressure cannot be generated in the sealing cavity. The glue valve is opened and paid attention to in the glue injection process, so that the safe operation of filling the glue stick can be ensured. After the glue injection is finished, the glue injection valve is closed, and the high-pressure glue injection gun can be safely disassembled. Therefore, in the operation process, the sealing performance of the glue injection valve is high or low, and the success of plugging operation is directly related.
The structure of the existing glue injection valve is shown in fig. 1, which generally includes a valve body 1 'and a valve core 2', and also can refer to the utility model patent 'glue injection valve and leaking stoppage component' with patent number 201621286280.8, the disclosed glue injection valve includes a shell (equivalent to a valve body) and a glue injection channel, a glue injection switch (equivalent to a valve core) is arranged on the glue injection channel, the glue injection switch is a screwing bolt, the screwing bolt includes a rod part and a head part arranged at one end of the rod part, a through hole is arranged on the rod part, and the through hole extends along the axial direction perpendicular to the rod part. Through the rotation of the screwing bolt, the through hole in the screwing bolt is aligned to the glue injection channel, and then the glue injection valve is opened.
The valve core in the existing common glue injection valve is of a full-thread structure and is a coarse thread, and the full-thread valve core has no tightening force due to the influence of the centering position of the through hole in the valve core and the glue injection channel and is in a free connection state; the clearance of the coarse thread is larger; therefore, the plugging operation on medium-pressure and low-pressure leakage media can meet the requirement, but when the plugging operation is performed in a high-pressure medium, the medium leaks out of the valve body along the threads, so that the plugging failure is caused. Therefore, the success rate of pressurized leakage stoppage is influenced, the glue filling rate is increased, great safety risks are brought to leakage stoppage operators, the repeated utilization rate is low after the high-temperature and high-pressure glue injection valve is recovered, and great influence is also caused to the stable operation of the device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to prior art's current situation, it is good to provide a leakproofness, can effectively be applied to the injecting glue valve in the area of the high pressure medium leakage and press the leaking stoppage operation.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a glue injection valve comprises:
the valve body is internally provided with a glue injection channel for medium circulation and a valve hole communicated with the glue injection channel;
the valve core extends into the valve hole and is in sealing fit with the valve hole, and a glue through hole communicated with the glue injection channel is formed in the valve core;
its characterized in that the valve opening is along the direction of stretching into of case including in proper order:
the inner wall of the connecting section is provided with an internal thread; the tail part of the valve core is provided with an external thread matched with the internal thread;
the flow-through section is provided with a smooth inner wall, and the aperture of the flow-through section is smaller than or equal to that of the connecting section; the middle part of the valve core is provided with a smooth outer wall which can be attached to the flow section; the middle part of the valve core is provided with the glue through hole;
the aperture of the sealing section is gradually reduced along the extending direction of the valve core; the valve core is provided with a head part which can be compacted on the sealing section and is tightly matched with the sealing section.
As an improvement, the glue through hole is oval, and the direction of the long axis of the oval glue through hole corresponds to the extending direction of the valve core. So, can not consider to lead to the centering position of gluey hole and injecting glue passageway, the case can be twisted to the end until with the sealed section in close contact with of valve body all the time, has guaranteed the flow area of medium.
In order to reduce the amount of play, the internal and external threads are preferably fine threads.
In the scheme, the whole sealing section is a funnel-shaped necking, and the head of the valve core is of a cone structure matched with the sealing section. So, the head of case inserts the sealed section internal energy and realizes sealed with the compaction of sealed section, plays the self sealss effect, simultaneously because of the head of case and the in close contact with of sealed section for external screw thread on the case afterbody also produces tight power with the internal thread on the valve opening, thereby has improved the leakproofness. And the cone structure at the head part of the valve core is convenient for the valve core to align with the valve hole and extend into the valve hole.
In order to further improve the sealing performance of the glue injection valve, it is preferable that the inner wall of the circulation section is enclosed to form a cylinder, and the middle part of the valve core is of a cylinder structure attached to the circulation section.
And finally, the valve core is integrally T-shaped and comprises a transverse connector and a vertical rod part, and the tail part, the middle part and the head part are positioned on the rod part of the valve core.
Compared with the prior art, the utility model has the advantages of: the valve hole on the valve body is provided with a structure with a connecting section, a circulating section and a sealing section, the tail part of the valve core is in threaded connection with the connecting section, the middle part of the valve core is in sealing fit with the smooth inner wall of the circulating section, and the head part of the valve core is compacted on the sealing section and is in tight contact with the sealing section, so that the valve core can be screwed to the bottom until the valve core is in tight contact with the sealing section after extending into the valve hole, a self-sealing effect is achieved, and a medium is prevented from leaking; simultaneously, because of the head compaction of case on the seal segment, with seal segment in close contact with for the external screw thread of case afterbody also produces the tight power with the internal thread on the valve opening, thereby has increased the leakproofness of threaded connection department, prevents that the medium from revealing from threaded connection department. Therefore, the utility model discloses a glue injection valve has better leakproofness, can be applied to in the high temperature high pressure leaking stoppage operation, effectively prevents the medium and reveals, has ensured the success rate of area pressure leaking stoppage. Just the utility model discloses a glue injection valve simple structure is convenient for implement.
Drawings
FIG. 1 is a schematic diagram of a prior art glue injection valve;
fig. 2 is the structural schematic diagram of the glue injection valve in the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 2, in order to implement the preferred embodiment of the glue injection valve of the present invention, the glue injection valve includes a valve body 1 and a valve core 2.
Wherein, a glue injection channel 11 for medium (sealant) circulation and a valve hole 12 communicated with the glue injection channel 11 are arranged in the valve body 1. In this embodiment, the glue injection channel 11 is arranged along the axial direction of the valve body, and penetrates through the valve body 1 from two ends of the valve body 1 to form a sealant inlet 11a for injecting sealant and a sealant outlet 11b for allowing the sealant to flow out, and the sealant is injected into the sealed cavity of the leakage part through the sealant outlet 11 b. The valve hole 12 is arranged along the radial direction of the valve body 1 and is perpendicular to the glue injection channel 11 so that the valve core 2 can extend into the valve hole. The valve hole 12 includes a connection section 121, a flow section 122, and a sealing section 123 in sequence along the extending direction of the valve element 2. Wherein, the inner wall of the connecting section 121 is provided with an internal thread N for connecting the valve core, and in order to further prevent the medium leakage, the internal thread N is preferably a fine thread. The circulation section 122 has a smooth inner wall, the glue injection channel 11 is communicated with the circulation section 122, the aperture of the circulation section 122 is smaller than that of the connection section 121, and the circulation section 122 is connected with the connection section 121 (in this embodiment, the circulation section 122 and the connection section 121 are coaxially distributed, and a step is formed at the connection position of the circulation section 122 and the connection section 121, so that the valve element 2 can be limited and the medium leakage can be further prevented, and of course, the apertures between the circulation section 122 and the connection section 121 can be the same, so that the valve element 2 can be inserted into the valve hole 12 and tightly matched with the valve hole 12). The sealing section 123 is connected to the flow section 122, and the aperture of the sealing section 123 is gradually reduced along the extending direction of the valve element 2.
The valve core 2 extends into the valve hole 12 and is in sealing fit with the valve hole 12, a glue through hole 20 communicated with the glue injection channel 11 is formed in the valve core 2, and the glue through hole 20 is radially arranged on the valve core 2. The valve core 2 has a tail portion 21, a middle portion 22 and a head portion 23, and is respectively matched with the connecting section 121, the flow section 122 and the sealing section 123 of the valve hole 12 (in this embodiment, in order to facilitate the rotation of the valve core 2, the valve core structure is similar to a bolt structure and is T-shaped, and includes a transverse connector and a vertical rod portion, and the tail portion 21, the middle portion 22 and the head portion 23 are sequentially located at the rod portion of the valve core 2). The tail part 21 of the valve core 2 is provided with an external thread W matched with the internal thread N, and the external thread W is also a fine thread. The middle part 22 of the valve core 2 has a smooth outer wall closely attached to the flow section 122, and the middle part 22 of the valve core 2 is provided with the glue through hole 20. The head 23 of the valve element 2 can be pressed against the sealing section 123 and can be tightly fitted to the sealing section 123.
In order to improve the sealing effect, the inner wall of the flow section 122 is enclosed to be cylindrical, the middle part 22 of the valve core 2 is a cylinder attached to the flow section 122, and the wall surfaces of the flow section 122 and the middle part 22 of the valve core 2 can be both smooth so as to realize attachment.
In order to realize compaction and sealing, the whole sealing section 123 is in a funnel-shaped necking shape, and the head part 23 of the valve core 2 is in a cone structure matched with the sealing section 123 so as to be tightly pressed on the sealing section 123, prevent a medium from leaking out of the sealing section 123 and realize self-sealing. And the compacted valve core 2 has a tendency of moving towards the tail part 21 of the valve core 2 under the action of pressing force, so that the external thread W at the tail part 21 of the valve core 2 and the internal thread N on the valve hole 12 also generate tension, the connecting force between the internal thread and the external thread is further improved, and the sealing property is improved.
In this embodiment, in order to realize that the valve element 2 can be screwed to the bottom, and the centering position between the glue through hole 20 and the glue injection channel 11 is not considered, the flowing volume of the sealant is increased, the cross section of the glue through hole 20 is designed to be oval (of course, it may be a waist shape, etc.), and the direction of the major axis of the oval glue through hole 20 corresponds to the extending direction of the valve element 2. Thus, in order to achieve alignment with the glue injection channel 11, the position of the valve core 2 in the extending direction can be selected in various ways according to the size of the long axis of the elliptical glue through hole 20, and the valve core 2 can be screwed to the bottom until being in close contact with the sealing section 123 of the valve body 1.
When in use, the valve core 2 is screwed into the valve hole 12 and screwed to the bottom, and the valve core 2 and the valve body 1 can be connected in a sealing way. The opening and closing of the glue injection channel 11 can be controlled by rotating the valve core 2, namely when the glue through hole 20 on the valve core 2 is aligned with the glue injection channel 11, the glue injection channel 11 is opened; when the glue through hole 20 on the valve core 2 is staggered with the glue injection channel 11, the outer wall of the middle part 22 of the valve core 2 blocks the glue injection channel 11, and the glue injection channel 11 is closed.
The glue injection valve of the embodiment has no leakage phenomenon of the valve body of the glue injection valve in the steam pressurized plugging operation with high temperature of 450 ℃ and high pressure of 10.0MPA, and the opening and closing of the glue injection valve are reliable. For example, the flange of the air turbine in the olefin part has the phenomena of leakage stoppage and glue injection under pressure, medium steam, the temperature of 450 ℃, the pressure of 9.0MPA and the time of 2 months, and the leakage phenomenon of a glue injection valve does not occur.
Claims (6)
1. A glue injection valve comprises:
the valve body is internally provided with a glue injection channel for medium circulation and a valve hole communicated with the glue injection channel;
the valve core extends into the valve hole and is in sealing fit with the valve hole, and a glue through hole communicated with the glue injection channel is formed in the valve core;
its characterized in that the valve opening is along the direction of stretching into of case including in proper order:
the inner wall of the connecting section is provided with an internal thread; the tail part of the valve core is provided with an external thread matched with the internal thread;
the flow-through section is provided with a smooth inner wall, and the aperture of the flow-through section is smaller than or equal to that of the connecting section; the middle part of the valve core is provided with a smooth outer wall which can be jointed with the flow section; the middle part of the valve core is provided with the glue through hole;
the aperture of the sealing section is gradually reduced along the extending direction of the valve core; the valve core is provided with a head part which can be compacted on the sealing section and is tightly matched with the sealing section.
2. The glue injection valve of claim 1, wherein: the glue through hole is oval, and the direction of the long axis of the oval glue through hole corresponds to the extending direction of the valve core.
3. The glue injection valve of claim 1, wherein: the internal thread and the external thread are fine threads.
4. The glue injection valve of claim 1, wherein: the whole sealing section is a funnel-shaped necking, and the head of the valve core is of a cone structure matched with the sealing section.
5. The glue injection valve of claim 1, wherein: the inner wall of the circulation section is enclosed to form a cylinder, and the middle part of the valve core is of a cylinder structure attached to the circulation section.
6. The glue injection valve of claim 1, wherein: the valve core is integrally T-shaped and comprises a transverse connector and a vertical rod part, and the tail part, the middle part and the head part are positioned on the rod part of the valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640343.2U CN209943566U (en) | 2019-05-07 | 2019-05-07 | Glue injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640343.2U CN209943566U (en) | 2019-05-07 | 2019-05-07 | Glue injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209943566U true CN209943566U (en) | 2020-01-14 |
Family
ID=69131494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920640343.2U Active CN209943566U (en) | 2019-05-07 | 2019-05-07 | Glue injection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209943566U (en) |
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2019
- 2019-05-07 CN CN201920640343.2U patent/CN209943566U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315207 Jiaochuan Street Refining Road, Zhenhai District, Ningbo City, Zhejiang Province Patentee after: Zhenhai Petrochemical Construction and Installation Engineering Co.,Ltd. Address before: 315207 Jiaochuan Street Refining Road, Zhenhai District, Ningbo City, Zhejiang Province Patentee before: ZHENHAI PETROCHEMICAL JIANAN ENGINEERING Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |