CN216459876U - Mechanical reciprocating type safe injection molding gun - Google Patents
Mechanical reciprocating type safe injection molding gun Download PDFInfo
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- CN216459876U CN216459876U CN202122629280.0U CN202122629280U CN216459876U CN 216459876 U CN216459876 U CN 216459876U CN 202122629280 U CN202122629280 U CN 202122629280U CN 216459876 U CN216459876 U CN 216459876U
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Abstract
The utility model discloses a mechanical reciprocating type safe injection molding gun, which comprises a piston rod, a return spring, a rear cylinder cover, a front cylinder cover, a cylinder body, a plastic loading cylinder, a threaded joint, a stop valve, an injection molding joint and a grease injection valve nut, wherein the front cylinder cover, the cylinder body, the plastic loading cylinder, the threaded joint, the stop valve, the injection molding joint and the grease injection valve nut are coaxially and sequentially arranged; the front cylinder cover is in threaded connection with the cylinder body, and an oil inlet is formed in the front cylinder cover; the cylinder body is fixed with the plastic cylinder through the rear cylinder cover; the plastic cylinder, the threaded joint, the stop valve, the injection joint and the grease injection valve nut are sequentially in threaded connection; the piston rod is fixed in the cylinder body through a return spring, the hollow cylinder body and the plastic cylinder form a stroke channel of the piston rod, and the plastic cylinder is provided with an injection molding opening. The mechanical reciprocating type safe injection molding gun can perform secondary injection molding sealing on the sleeve pair seal when the oil sleeve head is maintained.
Description
Technical Field
The utility model relates to the technical field of maintenance and repair of a wellhead device and a casing head in the petroleum and natural gas industry, in particular to a mechanical reciprocating type safe injection molding gun.
Background
In the field maintenance and repair work of a wellhead device and a casing head, secondary injection molding sealing needs to be carried out on a casing auxiliary seal, but the existing injection molding gun cannot be directly used for wellhead maintenance operation, so that the injection molding gun for wellhead maintenance operation needs to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a mechanical reciprocating type safe injection molding gun which can be directly used for wellhead maintenance operation.
The technical scheme adopted by the utility model is as follows: the mechanical reciprocating type safe injection molding gun comprises a piston rod, a return spring, a rear cylinder cover, a front cylinder cover, a cylinder body, a plastic cylinder, a threaded joint, a stop valve, an injection molding joint and a grease injection valve nut which are coaxially and sequentially arranged; the front cylinder cover is in threaded connection with the cylinder body, and an oil inlet is formed in the front cylinder cover; the cylinder body is fixed with the plastic cylinder through the rear cylinder cover; the plastic cylinder, the threaded joint, the stop valve, the injection joint and the grease injection valve nut are in end-to-end threaded connection; the piston rod is fixed in the cylinder body through a return spring, the hollow cylinder body and the plastic cylinder form a stroke channel of the piston rod, and the plastic cylinder is provided with an injection molding opening.
As a preferred mode of the mechanical reciprocating type safe injection molding gun, O-shaped sealing rings are arranged between the front cylinder cover and the outer wall of the cylinder body, between the inner wall of the cylinder body and two ends of the piston rod, and between the rear cylinder cover and the plastic loading cylinder.
As a preferred mode of the mechanical reciprocating type safe injection molding gun, the front cylinder cover, the cylinder body, the piston rod, the rear cylinder cover, the plastic cylinder, the injection molding joint and the grease injection valve nut are all made of 35CrMo materials.
As a preferred mode of the mechanical reciprocating type safe injection molding gun, the return spring adopts 60Si2And a Mn material.
As a preferred mode of the mechanical reciprocating type safe injection molding gun, the mechanical reciprocating type safe injection molding gun further comprises a sealing gasket, and the sealing gasket is arranged on the end face of the injection molding joint in the grease injection valve nut.
The utility model has the beneficial effects that: the mechanical reciprocating type safe injection molding gun can perform secondary injection molding sealing on the sleeve pair seal when the oil sleeve head is maintained.
Drawings
FIG. 1 is a cross-sectional view of a mechanically reciprocating safety injection molding gun of the present disclosure.
Fig. 2 is a partial view of a portion of fig. 1.
Reference numerals: 1. a front cylinder cover; 101. an oil inlet; 2. a cylinder body; 3. a piston rod; 4. a return spring; 5. a rear cylinder cover; 6. installing a plastic cylinder; 601. an injection molding port; 7. a threaded joint; 8. a stop valve; 9. injection molding a joint; 10. a grease injection valve nut; 11. and a gasket.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings, but embodiments of the present invention are not limited thereto.
Example 1:
referring to fig. 1, a mechanical reciprocating type safe injection molding gun comprises a piston rod 3, a return spring 4, a rear cylinder cover 5, a front cylinder cover 1, a cylinder body 2, a plastic cylinder 6, a threaded joint 7, a stop valve 8, an injection joint 9 and a grease injection valve nut 10 which are coaxially and sequentially arranged.
The front cylinder cover 1 is in threaded connection with the cylinder body 2, and an oil inlet 101 is formed in the front cylinder cover 1. The cylinder body 2 is fixed with the plastic cylinder 6 through the rear cylinder cover 5. The plastic cylinder 6, the threaded joint 7, the stop valve 8, the injection joint 9 and the grease injection valve screw cap 10 are connected in a head-to-tail threaded manner. The piston rod 3 is fixed in the cylinder body 2 through a return spring 4, and the hollow cylinder body 2 and the plastic containing cylinder 6 form a stroke channel of the piston rod 3. Referring to fig. 2, the plastic cylinder 6 is provided with an injection molding opening 601.
Specifically, O-shaped sealing rings are arranged between the front cylinder cover 1 and the outer wall of the cylinder body 2, between the inner wall of the cylinder body 2 and the two ends of the piston rod 3, and between the rear cylinder cover 5 and the plastic cylinder 6, so that sealing is realized.
The front cylinder cover 1, the cylinder body 2, the piston rod 3, the rear cylinder cover 5, the plastic cylinder 6, the injection joint 9 and the grease injection valve nut 10 are all made of 35CrMo materials. The return spring 4 adopts 60Si2And a Mn material.
In order to ensure the sealing between the grease filling valve nut 10 and the grease filling valve, a sealing gasket 11 is also provided on the end face of the injection joint 9 located in the grease filling valve nut 10.
The working principle of the utility model is as follows: when the sealing agent injection gun is used, the grease injection valve nut 10 at the front end of the injection gun is connected with a grease injection valve sealed by an oil casing head pair, the oil inlet 101 is connected with a hydraulic pipeline, the sealing agent is filled in the plastic filling cylinder 6, the stop valve 8 is opened, and the hydraulic pipeline pressurizes and pushes the piston rod 3 to inject the sealing agent into the sealing part of the casing head pair. After the injection, the pressure of the hydraulic pipeline is relieved, the piston rod 3 returns under the action of the return spring 4, the sealant is filled in the plastic cylinder 6 again and can be injected again, and the process is circulated until the sleeve is excited to form secondary sealing.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A mechanical reciprocating type safe injection molding gun is characterized by comprising a piston rod, a return spring, a rear cylinder cover, a front cylinder cover, a cylinder body, a plastic loading cylinder, a threaded joint, a stop valve, an injection molding joint and a grease injection valve nut which are coaxially and sequentially arranged; the front cylinder cover is in threaded connection with the cylinder body, and an oil inlet is formed in the front cylinder cover; the cylinder body is fixed with the plastic cylinder through the rear cylinder cover; the plastic cylinder, the threaded joint, the stop valve, the injection joint and the grease injection valve nut are in end-to-end threaded connection; the piston rod is fixed in the cylinder body through a return spring, the hollow cylinder body and the plastic cylinder form a stroke channel of the piston rod, and the plastic cylinder is provided with an injection molding opening.
2. The mechanical reciprocating type safe injection molding gun of claim 1, wherein O-shaped sealing rings are arranged between the front cylinder cover and the outer wall of the cylinder body, between the inner wall of the cylinder body and two ends of the piston rod, and between the rear cylinder cover and the plastic containing cylinder.
3. The mechanically reciprocating type safe injection molding gun of claim 1, wherein the front cylinder cover, the cylinder body, the piston rod, the rear cylinder cover, the plastic cylinder, the injection joint and the grease injection valve nut are all made of 35 CrMo.
4. The mechanically reciprocating safety injection gun of claim 1, wherein the return spring is 60Si2And a Mn material.
5. The mechanically reciprocating safety injection gun of claim 1, further comprising a gasket disposed on an end face of the injection fitting within the grease injection valve nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122629280.0U CN216459876U (en) | 2021-10-29 | 2021-10-29 | Mechanical reciprocating type safe injection molding gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122629280.0U CN216459876U (en) | 2021-10-29 | 2021-10-29 | Mechanical reciprocating type safe injection molding gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216459876U true CN216459876U (en) | 2022-05-10 |
Family
ID=81443656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122629280.0U Active CN216459876U (en) | 2021-10-29 | 2021-10-29 | Mechanical reciprocating type safe injection molding gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216459876U (en) |
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2021
- 2021-10-29 CN CN202122629280.0U patent/CN216459876U/en active Active
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