CN203272120U - Convenient valve cover assembly - Google Patents
Convenient valve cover assembly Download PDFInfo
- Publication number
- CN203272120U CN203272120U CN 201320268959 CN201320268959U CN203272120U CN 203272120 U CN203272120 U CN 203272120U CN 201320268959 CN201320268959 CN 201320268959 CN 201320268959 U CN201320268959 U CN 201320268959U CN 203272120 U CN203272120 U CN 203272120U
- Authority
- CN
- China
- Prior art keywords
- valve gap
- seal
- fluid cylinder
- lower seal
- gland
- 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.)
- Expired - Fee Related
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- Lift Valve (AREA)
Abstract
The utility model discloses a convenient valve cover assembly. A through hole with a step is formed in the inner cavity of a hydraulic cylinder, a press cover is arranged on the step of the through hole in a sitting mode, a sealing groove is formed in step the edge of the inner cavity of the hydraulic cylinder, an upper seal and a lower seal are arranged in the sealing groove, the outer circle of the upper seal and the outer circle of the lower seal are both in contact with the vertical face of the sealing groove of the hydraulic cylinder, the lower end face of the lower seal is arranged on the plane of the sealing groove of the hydraulic cylinder in a sitting mode, the inner circle surface of the upper end of the lower seal is in contact with the circumference of a press cover body, and the conical surface of the outer circle of the upper end of the lower seal is in contact with the conical inner circle surface of the upper seal; a valve cover is arranged above the press cover, the valve cover is arranged inside the hydraulic cylinder in a sleeved mode, an adjusting screwed plug is arranged in an axis hole of the valve cover in a sleeved mode, and a spring is arranged between the lower end face of the adjusting screwed plug and the upper end face of the press cover. The convenient valve cover assembly is simple in structure, flexible in operation, safe and reliable, and can effectively prevent the valve cover from loosening.
Description
Technical field
The utility model belongs to the oil drill equipment technical field, relates to a kind of portable type valve gap assembly.
Background technique
The valve gap assembly is to affect one of drilling pump overall performance important spare part, due to the complexity of working environment and sealing medium, has restricted to a great extent the smooth running of drilling pump.
At present, the valve gap assembly of drilling pump all adopts scyewed joint, tightens by knocking, and its not enough main manifestations is: 1) its pretightening force size of knocking moment that places one's entire reliance upon, labor intensity is large, and is easily loosening.2) easily thorn is bad for valve gap and Sealing, and working life is short, changes frequent.3) safety reliability is poor, changes efficient low.
The model utility content
The purpose of this utility model is to provide a kind of portable type valve gap assembly, has solved the employing scyewed joint that exists in the prior art, tightens by knocking, causes safety reliability poor, the problem that working life is short.
The technological scheme that the utility model adopts is, a kind of portable type valve gap assembly, be provided with through hole with the level in the fluid cylinder inner chamber, sit on this through hole step gland is arranged, at fluid cylinder inner chamber step along being provided with seal groove, sealing and lower seal are installed in the sealing groove, the cylindrical of upper sealing and lower seal all contacts with fluid cylinder seal groove facade, the lower end surface of lower seal is sitting on fluid cylinder seal groove plane, the upper end internal circular surfaces of lower seal contacts with gland main body circumference, and the upper end cylindrical conical surface of lower seal contacts with the taper internal circular surfaces of upper sealing;
The top of gland is provided with valve gap, and valve gap is sleeved in fluid cylinder, is set with the adjusting plug in the axle center hole of valve gap, between the lower end surface of adjusting plug and the upper-end surface of gland, spring is installed.
Portable type valve gap assembly of the present utility model, its characteristics also are:
Spring is selected belleville spring or cylindrically coiled spring.
Regulating plug and valve gap spins by screw thread; Valve gap and fluid cylinder are threaded connection.
The beneficial effects of the utility model are, simple in structure, flexible operation, safe and reliable can adapt to the structure needs of drilling pump fluid end, can prevent effectively that valve gap is loosening, prevents that drilling fluid from leaking.
Description of drawings
Fig. 1 is the structural representation of the utility model portable type valve gap assembly.
In figure, 1. regulate plug, 2. valve gap, 3. spring, 4. fluid cylinder, 5. gland, 6. on sealing, 7. lower seal.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
with reference to Fig. 1, the structure of the utility model device is, be provided with through hole with the level in fluid cylinder 4 inner chambers of drilling pump, this through-hole diameter is up big and down small, sit on this through hole step gland 5 is arranged, at fluid cylinder 4 inner chamber steps along being provided with seal groove, sealing 6 and lower seal 7 are installed in the sealing groove, the cylindrical of upper sealing 6 and lower seal 7 all contacts with fluid cylinder 4 seal groove facades, the lower end surface of lower seal 7 is sitting on fluid cylinder 4 seal groove planes, the upper end internal circular surfaces of lower seal 7 contacts with gland 5 main body circumference, the upper end cylindrical conical surface of lower seal 7 contacts with the taper internal circular surfaces of upper sealing 6, the top of gland 5 is provided with valve gap 2, valve gap 2 by the cylindrical thread set in fluid cylinder 4 (valve gap 2 is threaded with fluid cylinder 4), be set with in the axle center hole of valve gap 2 and regulate plug 1, regulate plug 1 and spin with valve gap 2 screw threads, between the lower end surface of adjusting plug 1 and the upper-end surface of gland 5, spring 3 is installed.
Spring 3 is selected belleville spring or cylindrically coiled spring.
7 two compositions of upper sealing 6 and lower seal " metal to metal " sealing configuration, also can be for single-piece or many compositions.
The working principle of the utility model device is,
At first upper sealing 6 and lower seal 7 are arranged in the seal groove of fluid cylinder 4 through holes successively, gland 5 is mounted thereto.Valve gap 2 is spun by screw thread thereupon and pack in fluid cylinder 4, and tighten valve gap 2 and hold out against gland 5, make gland 5 compress upper sealing 6 and lower seals 7, thereby set up " metal to metal seal ", section in formation, lower section, hoop cylndrical surface is totally three sealing surfaces.At last spring 3 is packed in the axle center hole of valve gap 2, the pretightening force state regulating plug 1 and tighten to setting makes and regulate plug 1 Compress Spring 3, but the fluctuation pressures in spring 3 active balance fluid cylinders 4 also has locking effect to valve gap 2 simultaneously.When finding in the peep hole of fluid cylinder 4 that drilling fluid leaks, only need (to tight direction) suitably rotate valve gap 2 and (or) regulate plug 1, can set up new sealing surface.When the upper sealing 6 of needs dismountings, lower seal 7, only need the integral body valve gap 2 of back-outing, can take out in turn all parts.
The characteristics of the utility model device also show:
1) seal assembly of upper sealing 6 and lower seal 7 compositions, realized the sealing of end face seal and hoop, and good sealing effect is easy to adjust, can reuse, and utilization ratio is high, saves cost.
2) after valve gap 2 is tightened, can be according to the size of the drilling liquid pressure in fluid cylinder 4, rotation is in good time regulated plug 1 with the fluctuation of balanced drilling liquid fluctuation pressure, effectively prevents the loosening of valve gap 2.
3) valve gap assembly flexible operation, safety reliability is high, long service life.
Claims (3)
1. portable type valve gap assembly, its characteristics are: be provided with through hole with the level in fluid cylinder (4) inner chamber, sit on this through hole step gland (5) is arranged, at fluid cylinder (4) inner chamber step along being provided with seal groove, sealing (6) and lower seal (7) are installed in the sealing groove, the cylindrical of upper sealing (6) and lower seal (7) all contacts with fluid cylinder (4) seal groove facade, the lower end surface of lower seal (7) is sitting on fluid cylinder (4) seal groove plane, the upper end internal circular surfaces of lower seal (7) contacts with gland (5) main body circumference, the upper end cylindrical conical surface of lower seal (7) contacts with the taper internal circular surfaces of upper sealing (6),
The top of gland (5) is provided with valve gap (2), and valve gap (2) is sleeved in fluid cylinder (4), is set with in the axle center hole of valve gap (2) to regulate plug (1), between the lower end surface of adjusting plug (1) and the upper-end surface of gland (5), spring (3) is installed.
2. portable type valve gap assembly according to claim 1, its characteristics are: described spring (3) is selected belleville spring or cylindrically coiled spring.
3. portable type valve gap assembly according to claim 1, its characteristics are: described adjusting plug (1) spins by screw thread with valve gap (2); Valve gap (2) is threaded connection with fluid cylinder (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320268959 CN203272120U (en) | 2013-05-16 | 2013-05-16 | Convenient valve cover assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320268959 CN203272120U (en) | 2013-05-16 | 2013-05-16 | Convenient valve cover assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272120U true CN203272120U (en) | 2013-11-06 |
Family
ID=49502549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320268959 Expired - Fee Related CN203272120U (en) | 2013-05-16 | 2013-05-16 | Convenient valve cover assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203272120U (en) |
-
2013
- 2013-05-16 CN CN 201320268959 patent/CN203272120U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140516 |