CN203566615U - Valve seat drawing tool - Google Patents
Valve seat drawing tool Download PDFInfo
- Publication number
- CN203566615U CN203566615U CN201320584930.7U CN201320584930U CN203566615U CN 203566615 U CN203566615 U CN 203566615U CN 201320584930 U CN201320584930 U CN 201320584930U CN 203566615 U CN203566615 U CN 203566615U
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- CN
- China
- Prior art keywords
- valve seat
- tool
- depressed part
- sub
- drawing valve
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- 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 - Lifetime
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Abstract
The utility model discloses a valve seat drawing tool used for drawing a valve seat. The valve seat drawing tool comprises a drawing jaw (70) connected with the valve seat and a connecting rod (10) connected with the drawing jaw (70), wherein the drawing jaw (70) comprises a body (710) and a connecting part (60), the connecting part (60) is arranged on the body (710) in a sleeved mode and clamped at the end of the body (710), a concave part (714) is formed in the outer surface, far away from the end, of the body (710), and the concave part (714) makes a gap formed between the outer surface of the body (710) which stretches into the valve seat and expands and the inner wall of the valve seat. The valve seat drawing tool can still be normally used even when the valve seat deforms.
Description
Technical field
The utility model relates to a kind of tight fit parts drawing device used that separates, and relates in particular to a kind of tool for drawing valve seat.
Background technology
In oil field operation, particularly in the operation such as reinforcing oil well, pressure break, acidifying, sand control, the pressure bearing along with valve seat in pump head body and the continuous increase of impact load, again because valve seat is tightly pressed in pump head body, bring great difficulty therefore to the dismounting of valve seat.
The drawing device that dismounting valve seat is used at present adopts being used in conjunction with of pulling claw and pull bar, and pulling claw is divided into two parts, pins fixing with connector.The two-part bottom of pulling claw is close to and is stretched in valve seat, and pull bar screws in pulling claw, two parts spreading of pulling claw, and the inwall butt of the outer wall of pulling claw and valve seat, the flange of pulling claw snaps onto on the end face bottom valve seat.By the pull bar application of force, control pulling claw valve seat is pulled out.
But, while adopting above-mentioned tool for drawing valve seat, and reckon without valve seat and can deform after long-term use, thereby its internal diameter can subside and causes this drawing device normally to work.
Utility model content
Main purpose of the present utility model is, for the defect that in prior art, the distortion due to valve seat causes drawing device normally to work, even if provide a kind of valve seat to be out of shape the tool for drawing valve seat that also can normally work.
A kind of tool for drawing valve seat that the utility model provides, for drawing valve seat, described tool for drawing valve seat comprises the pulling claw engaging with described valve seat and the pull bar being connected with described pulling claw, described pulling claw comprises body and connector, described connector be set on described body and holding in the end of described body, on outer surface at described body away from described end, offer depressed part, described depressed part makes to stretch between the outer surface of the body in described valve seat and after opening and the inwall of described valve seat and forms space.
Above-mentioned tool for drawing valve seat, described body comprises the halfbody of two separation, two described halfbodies are all arranged in described connector and between described two halfbodies and form opening, at least one halfbody in two described halfbodies, have described depressed part.
Above-mentioned tool for drawing valve seat, described body is cylindric, and described depressed part is circumferentially arranged on the whole outer surface away from the described body of described end along described body.
Above-mentioned tool for drawing valve seat, described body is cylindric, and described depressed part is circumferentially arranged on the part outer surface away from the described body of described end along described body.
Above-mentioned tool for drawing valve seat, each described halfbody include offer the first sub-body of described depressed part and along described the first sub-body towards the second sub-body extending away from described depressed part; Described the first sub-body and the second sub-body are formed with the stepped connecting portion of cross section at adjoiner.
Above-mentioned tool for drawing valve seat, described connecting portion place offers to the chamfering away from described end lopsidedness, and the angle of described chamfering is 30 ° to 60 °.
Above-mentioned tool for drawing valve seat, the degree of depth of described depressed part is 0.1mm to 2mm.
Above-mentioned tool for drawing valve seat, described pull bar is arranged with pressure nut, pressure nut backing plate and hydraulic cylinder from top to bottom successively, and described hydraulic cylinder is used for controlling described pulling claw and pulls out described valve seat.
Enforcement the beneficial effects of the utility model are: by by the reduced thickness of the outer wall of the subregion on the body of pulling claw, it is stretched between the outer wall of body in valve seat, after opening and the inwall of valve seat and form the space that certain gap deforms to reserve certain common valve seat internal diameter.Such drawing device has been considered the distortion of valve seat internal diameter when design, thereby even when valve seat internal diameter is deformed, this drawing device also can normally be worked.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
The structural representation of the preferred embodiment of the tool for drawing valve seat that Fig. 1 provides for the utility model;
Fig. 2 is the structural representation of the body of pulling claw in Fig. 1.
The specific embodiment
The tool for drawing valve seat that the utility model provides is mainly used in dismantling the valve seat in the pump head body of fracturing unit truck.
As shown in Figure 1, a kind of tool for drawing valve seat that the utility model provides, comprises pull bar 10, pulling claw 70 and is set in successively pressure nut 20, pressure nut backing plate 30 and the hydraulic cylinder 40 on pull bar 10.In the present embodiment, hydraulic cylinder 40 is connected with hydraulic pump 50, thereby control hydraulic cylinder 40 by hydraulic pump 50, works and provides pulling force for pulling claw 70.In pulling claw 70, have internal thread, the tail end of pull bar 10 is provided with the external screw thread matching with the internal thread of pulling claw 70, and both realize connection in the mode being threaded.In the present embodiment, pull bar 10 and the pressure nut 20, pressure nut backing plate 30 and the hydraulic cylinder 40 that are set in successively on pull bar 10 are the parts that tool for drawing valve seat is conventional, are well known to those skilled in the art, therefore do not repeat them here.
With reference to figure 2, in conjunction with shown in Fig. 1, it is cylindric that pulling claw 70 is roughly, and the inner surface of cylinder is provided with screw thread, for realizing and being threaded of pull bar 10.Pulling claw 70 comprises body 710 and connector 60.Connector 60 is set on body 710, and holding is in the end of body 710.Concrete, body 710 offers groove 715 in end.Connector 60 holdings are to fix in groove 715, and connector 60 is also comprised of two parts docking, by screw, both is fixed into a connector 60, when needs are untied this connector 60, only screw need be taken out.Facilitated and changed and dismounting.Body 710 comprises distinct two halfbodies (not label), and two halfbodies are all arranged in connector 60, by connector 60, two halfbodies is fastening and it is not got loose.Connector 60 does not get loose for two halfbodies that retrain body 710.Between two fastening halfbodies, be formed with opening 716, the bore of opening 716 increases from top to bottom gradually, is up-small and down-big shape.Two halfbodies arrange mutually dorsad at the flange 711 being provided with away from the other end that is provided with groove 715 on 711, two halfbodies of flange.In the present embodiment, the lower end of two halfbodies of body 710 is adjacent to and makes its structure that formation lower end diameter is little, upper end diameter is large so that it enters in valve seat.Enter after valve seat, the upper surface butt of the lower surface of connector 60 and valve seat, to prevent that whole body 710 from entering in valve seat.Can opening under the effect of gravity of body 710, thus the flange 711 of body 710 and the end face of valve seat bottom are interlocked, and the outer surface that is arranged in two halfbodies of the body 710 of valve seat fits with the inwall of valve seat respectively.
Effect of the present utility model is to make body 710 to enter after valve seat, forms space to reserve enough deflections with the contingent distortion of reply valve seat between the outer surface of two halfbodies of body 710 and the inwall of valve seat.
In the utility model, on the outer surface of the body 710 of the end away from for holding connector 60, offer depressed part 714.This depressed part 714 is at least opened on a halfbody of body 710.Preferably, on two halfbodies of body 710, all offer depressed part 714.Like this, after body 710 enters valve seat and after opening, the outer surface of two halfbodies of body 710 all and between the inwall of valve seat forms space.
Depressed part 714 can be opened on the whole outer surface away from the end body 710 of holding connector 60, also can be opened on the part outer surface of body 710.In order to save cost, reduce processing technology, preferably depressed part 714 is opened on the part outer surface of body 710.
In the present embodiment, body 710 is combined into cylindric by two halfbodies, and depressed part 714 is circumferentially offered along body 710, is circular-arc, and the diameter of circular arc is better consistent with the diameter of body, around body 710, arranges.
In order to make valve seat have enough deformation spaces, the degree of depth of depressed part 714 is set to 0.1mm to 2mm.Preferably, the degree of depth is made as 1mm-2mm, can prevent like this internal diameter of valve seat that larger deflection occurs.
In the present embodiment, depressed part 714 is along being circumferentially opened on the local outer surface of body 710.Each halfbody of body 710 includes the first sub-body (not label) that offers depressed part 714 and the second sub-body 712 that does not offer depressed part 714.The first sub-body is connected with the second sub-body 712.One end of the first sub-body is connected on groove 715, and the other end of the first sub-body is connected with one end of the second sub-body 712, and the other end of described the second sub-body 712 is connected with flange 711.The intersection of the first sub-body and the second sub-body 712 is formed with the stepped connecting portion of cross section 713.This is due to the wall thickness of the first sub-body, to be less than the wall thickness of the second sub-body, thereby has formed the stepped connecting portion 713 of cross section, and this connecting portion 713 arranges around body 710.For the ease of by valve seat pull-out, on connecting portion 713, offer to the chamfering of the lopsidedness lopsidedness of flange 711 (to) of end away from being provided with connector 60.The angle of chamfering is better for 30 ° to 60 °, is goodly 45 °, to apply active force in the process of extracting valve seat.Certainly, also can be to connecting portion 713 roundings.
The operation principle of the tool for drawing valve seat that the utility model provides.
The lower end laminating of two halfbodies of body 710 is formed to a large structure of the little upper end diameter of lower end diameter, it is freely positioned in valve seat from top to bottom.The lower surface of connector 60 and the upper surface of valve seat connect, and hold up body 710.Body 710 freely opens under Action of Gravity Field, and flange 711 fastens the bottom of valve seat.Body 710 is contained in valve seat, due to the existence of the depressed part 714 on body 710, makes to form certain space between the outer surface of two halfbodies of the body 710 after opening and the inwall of valve seat.Pull bar is aimed in pulling claw to screw thread and screwed in connect, and sheathed hydraulic cylinder, pressure nut backing plate, pressure nut on pull bar successively, and hydraulic cylinder is connected with hydraulic pump.Primer fluid press pump, controls pulling claw valve seat is extracted.Drawing device adopts such structure, makes when certain distortion occurs the internal diameter of valve seat, and drawing device still can normally be worked.Such drawing device has been considered the distortion of valve seat internal diameter when design, thereby even when valve seat internal diameter is deformed, this drawing device also can normally be worked.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (8)
1. a tool for drawing valve seat, for drawing valve seat, described tool for drawing valve seat comprises the pulling claw (70) engaging with described valve seat and the pull bar (10) being connected with described pulling claw (70), described pulling claw (70) comprises body (710) and connector (60), described connector (60) is set in the upper also holding of described body (710) in the end of described body (710), it is characterized in that, on outer surface at described body (710) away from described end, offer depressed part (714), described depressed part (714) makes to stretch between the outer surface of the body (710) in described valve seat and after opening and the inwall of described valve seat and forms space.
2. tool for drawing valve seat according to claim 1, it is characterized in that, described body (710) comprises the halfbody of two separation, two described halfbodies are all arranged in described connector (60) and between described two halfbodies and form opening (716), have described depressed part (714) at least one halfbody in two described halfbodies.
3. tool for drawing valve seat according to claim 1, it is characterized in that, described body (710) is cylindric, and described depressed part (714) is circumferentially arranged on the whole outer surface away from the described body (710) of described end along described body (710).
4. tool for drawing valve seat according to claim 1, it is characterized in that, described body (710) is cylindric, and described depressed part (714) is circumferentially arranged on the part outer surface away from the described body (710) of described end along described body (710).
5. tool for drawing valve seat according to claim 2, it is characterized in that, each described halfbody include offer the first sub-body of described depressed part (714) and along described the first sub-body towards away from described depressed part (714) extend the second sub-body (712); Described the first sub-body and the second sub-body (712) are formed with the stepped connecting portion of cross section (713) at adjoiner.
6. tool for drawing valve seat according to claim 5, is characterized in that, described connecting portion (713) locates to offer the chamfering to away from described end lopsidedness, and the angle of described chamfering is 30 ° to 60 °.
7. according to the tool for drawing valve seat described in any one in claim 3 to 6, it is characterized in that, the degree of depth of described depressed part (714) is 0.1mm to 2mm.
8. tool for drawing valve seat according to claim 1, it is characterized in that, described pull bar (10) is arranged with pressure nut (20), pressure nut backing plate (30) and hydraulic cylinder (40) from top to bottom successively, and described hydraulic cylinder (40) pulls out described valve seat for controlling described pulling claw (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320584930.7U CN203566615U (en) | 2013-09-22 | 2013-09-22 | Valve seat drawing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320584930.7U CN203566615U (en) | 2013-09-22 | 2013-09-22 | Valve seat drawing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203566615U true CN203566615U (en) | 2014-04-30 |
Family
ID=50534373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320584930.7U Expired - Lifetime CN203566615U (en) | 2013-09-22 | 2013-09-22 | Valve seat drawing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203566615U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11964350B2 (en) | 2021-06-30 | 2024-04-23 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Puller, claw, and usage method of puller |
-
2013
- 2013-09-22 CN CN201320584930.7U patent/CN203566615U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11964350B2 (en) | 2021-06-30 | 2024-04-23 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Puller, claw, and usage method of puller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210129 Address after: 516000 No.1 Factory building, No.10 Yuanhui Road, Chenjiang street, Zhongkai high tech Zone, Huizhou City, Guangdong Province Patentee after: BAIQIN ENERGY TECHNOLOGY (HUIZHOU) Co.,Ltd. Address before: 518054 7th floor, Tianli central business square, Haide Third Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: PETRO-KING OILFIELD TECHNOLOGY Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |