CN114367807B - Drawing device and drawing system - Google Patents
Drawing device and drawing system Download PDFInfo
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- CN114367807B CN114367807B CN202111530147.8A CN202111530147A CN114367807B CN 114367807 B CN114367807 B CN 114367807B CN 202111530147 A CN202111530147 A CN 202111530147A CN 114367807 B CN114367807 B CN 114367807B
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- valve seat
- piece
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- supporting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Details Of Reciprocating Pumps (AREA)
- Lift Valve (AREA)
Abstract
The application relates to the technical field of a valve seat drawing device and discloses a drawing device and a drawing system. The drawing device comprises a plurality of drawing pieces and supporting pieces, each drawing piece comprises a first end and a second end, the first end is used for being clamped with the bottom end of the valve seat, and the second end is used for being connected with the driving piece; the plurality of drawing pieces are arranged in the pump cavity of the valve seat and are arranged at intervals along the circumferential direction of the pump cavity; the supporting piece is arranged on the inner sides of the pulling pieces and is in stressed abutting joint with the pulling pieces so as to limit radial displacement between the first end of the pulling piece and the valve seat. Compared with the prior art, set up in a plurality of drawing with drawing a atress butt through support piece, and then effectively avoid at the in-process that the valve seat was drawn, a plurality of drawing a radial movements to the pump chamber inboard, can be in drawing the in-process, maintain the clamping force between valve seat and the drawing piece, improve the stability and the drawing efficiency that the valve seat and the drawing piece were drawn the in-process, avoid drawing repeatedly and damage the part in the valve seat.
Description
Technical Field
The application relates to the technical field of valve seat drawing devices, in particular to a drawing device and a drawing system.
Background
When the valve seat is disassembled, a plurality of pulling claws are required to be assembled in a pump cavity of the valve seat, one end of each pulling claw is radially clamped with the end part of the valve seat, and then the pulling claws are pulled by a power device to be disassembled. At present, in the process of drawing the valve seat with the centering sleeve, the centering sleeve is positioned in an inner hole of the valve seat, and the screw rod can only be clamped with the other end of the drawing claw to drive the drawing claw to move axially. Because there is the interval space between a plurality of drawing claws, at the dismantlement in-process, can produce the displacement of radially contracting to the pump chamber inboard between a plurality of drawing claws, lead to unable stable joint between drawing claw and the valve seat, reduced the success rate of drawing, the workman has to repeat the process of drawing, so not only reduces and consumes more time, and serious probably leads to the part damage in the valve seat, has improved the dismantlement cost.
Disclosure of Invention
In order to solve the technical problem that the clamping cannot be stabilized in time between the drawing device and the valve seat in the prior art, the main purpose of the application is to provide the drawing device and the drawing system which can be stably clamped between the drawing device and the valve seat.
In order to achieve the purpose of the invention, the following technical scheme is adopted in the application:
according to an aspect of the present application, there is provided a drawing apparatus including:
the drawing pieces comprise first ends and second ends, the first ends are used for being clamped with the bottom end of the valve seat, and the second ends are used for being connected with the driving piece;
the drawing pieces are arranged in the pump cavity of the valve seat and are arranged at intervals along the circumferential direction of the pump cavity;
the supporting piece is arranged on the inner side of the drawing pieces and is abutted to the drawing pieces in a stress manner so as to limit the radial displacement between the first end of the drawing piece and the valve seat.
According to an embodiment of the present application, a stressed abutting surface is arranged between the support member and the drawing member, and the stressed abutting surface is an arc-shaped surface.
According to an embodiment of the present application, the supporting member is cylindrical, and the circumferential side of the supporting member forms the force-receiving abutting surface.
According to an embodiment of the application, the support member comprises a fitting portion through which the support member is detachably connected with the first end of the drawing member.
According to an embodiment of the application, wherein the valve seat is including righting the cover, right the cover establish in the bottom of valve seat, draw the first end of piece with right set joint, right the cover including spacing portion, the assembly part with spacing portion is in assembly connection in the axial of pump chamber.
According to an embodiment of the application, wherein assembly portion is the shaft part structure, spacing portion is the shaft hole, right the cover with support piece passes through the shaft part with the connection can be dismantled in the shaft hole.
According to an embodiment of the present application, wherein the support member comprises:
the guide part is of a circular truncated cone structure, the upper bottom surface of the guide part faces the first end of the drawing part, and the lower bottom surface of the guide part faces the second end of the drawing part;
the supporting part is of a cylindrical structure, one end of the supporting part is smoothly connected with the lower bottom surface of the guide part, and the side surface of the supporting part and the drawing part form a stress abutting surface.
According to an embodiment of the application, a first clamping piece is arranged at a first end of the drawing piece, a second clamping piece is arranged at the bottom end of the valve seat, and the first clamping piece and the second clamping piece are clamped in a matched mode to limit relative displacement between the drawing piece and the valve seat;
draw the second end of piece and be provided with third joint spare, the driving piece includes fourth joint spare, third joint spare with fourth joint spare cooperation joint, with the driving piece is with a plurality of draw relative displacement between the piece.
According to an embodiment of the present application, the first clamping member is a boss structure extending toward one side of the valve seat, and the third clamping member is a boss structure extending toward the inner side of the pump cavity.
According to another aspect of the present application, there is provided a drawing system comprising the drawing apparatus described above.
According to the technical scheme, the drawing device and the drawing system have the advantages and positive effects that:
a plurality of first ends and the valve seat joint of drawing the piece, the second end is connected with the driving piece, a plurality of drawing the piece interval set up in the pump chamber of valve seat week is upwards, advances to drive when drawing the axial displacement of piece second end along the pump chamber at the drive, support piece atress butt is in a plurality of draw the inboard of piece, just also maintain all the time draw the piece with the atress joint of valve seat avoids draw the first end of piece with radial displacement appears in the bottom of valve seat, make the valve seat with draw and maintain stably joint state between the piece, and then improve the valve seat and draw the stability of piece drawing the in-process and draw efficiency, avoid drawing repeatedly and damage the part in the valve seat.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic cross-sectional structural view of a drawing apparatus provided in an embodiment of the present application;
fig. 2 is a schematic perspective view of a drawing member in a drawing apparatus according to an embodiment of the present disclosure;
fig. 3 is a schematic perspective view of a supporting member in a drawing apparatus according to an embodiment of the present disclosure;
fig. 4 is a schematic structural view of a cross section of a partial structure in a drawing apparatus according to an embodiment of the present disclosure;
fig. 5 is another schematic cross-sectional structure diagram of a partial structure of a drawing apparatus according to an embodiment of the present disclosure;
fig. 6 is a schematic perspective view of a centering sleeve in a drawing device according to an embodiment of the present disclosure;
fig. 7 is a schematic perspective view of a driving member in a drawing apparatus according to an embodiment of the present disclosure;
FIG. 8 is a schematic cross-sectional view of a drawing system according to an embodiment of the present disclosure;
fig. 9 is a schematic perspective view of a drawing system according to an embodiment of the present application.
Wherein:
10. drawing the piece;
101. a first end; 102. a second end;
103. a first side surface; 104. a second side surface;
105. a first clip member; 106. a third clamping piece;
20. a valve seat;
201. a pump chamber; 202. a centralizing sleeve; 221. a limiting part; 203. a second clip member;
30. a drive member; 301. a fourth clamping piece; 302. a first rod body; 303. a second rod body;
40. a support member;
401. an assembling portion; 402. a guide part; 403. a support portion; 404. a hand-held portion;
50. a stressed abutting surface;
60. a valve box; 70. a hydraulic system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
During the operation of the well cementation pump, the suction valve body assembly and the discharge valve body assembly of each cylinder of the hydraulic end assembly are switched on and off once in each punching of the plunger. The valve body assembly is arranged in a taper hole matched with the valve box and is in interference fit. In the continuous opening and closing process of the valve body assembly, the valve seat assembly is gradually hammered tightly by the valve body assembly under the action of high-pressure liquid. However, the valve seat assembly belongs to a vulnerable part, and the valve body assembly needs to be replaced regularly when the valve body assembly is continuously opened and closed. The valve seat can be pulled out only by a pull force of 150kN at most in the disassembly process, so that a special pulling tool needs to be designed to disassemble the valve seat assembly.
When the valve seat is disassembled, a plurality of pulling claws are required to be assembled in a pump cavity of the valve seat, one end of each pulling claw is radially clamped with the end part of the valve seat, and then the pulling claws are pulled by a power device to be disassembled. In the process of drawing the existing valve seat with the centering sleeve, the centering sleeve is positioned in an inner hole of the valve seat, and the screw rod can only be clamped with the other end of the drawing claw to drive the drawing claw to axially move. Because there is the interval space between a plurality of pull claws, at the dismantlement in-process, can produce the displacement of radially contracting to the pump chamber inboard between a plurality of pull claws, lead to unable stable joint between pull claw and the valve seat, reduced the success rate of drawing, the workman has to repeat the process of drawing, so not only reduces and consumes more time, and serious probably leads to the part damage in the valve seat, has improved the dismantlement cost. In order to solve the technical problem that the clamping connection cannot be stabilized in time between the drawing device and the valve seat in the prior art, the drawing device and the drawing system which can be stably clamped with the valve seat are provided.
Referring to fig. 1 to 3, the first ends 101 of the pulling members 10 are clamped with the valve seat 20, the second ends 102 are connected with the driving member 30, the pulling members 10 are arranged on the circumference of the pump cavity 201 of the valve seat 20 at intervals, and when the driving member drives the second ends 102 of the pulling members 10 to move axially along the pump cavity 201, the supporting member 40 is forced to abut against the inner sides of the pulling members 10, so that the forced clamping of the pulling members 10 with the valve seat 20 is always maintained, the radial displacement between the first ends 101 of the pulling members 10 and the bottom end of the valve seat 20 is avoided, the stable clamping state between the valve seat 20 and the pulling members 10 is maintained, the stability and the pulling efficiency of the pulling members 20 and the pulling members 10 in the pulling process are further improved, and the parts in the pulling seat 20 are prevented from being damaged repeatedly.
In an embodiment, a plurality of the drawing pieces 10 have an interval therebetween, so as to assemble a drawing claw into the pump cavity 201 of the valve seat 20, the drawing claws are clamped with the bottom end of the valve seat 20 through the first ends 101, and the driving piece 30 can drive the valve seat 20 to move in the axial direction by pulling the second ends 102 of the drawing claws, so as to achieve the purpose of disassembly.
Draw piece 10 including first side 103 and second side 104, first side 103 towards with valve seat 20, and as with the face of valve seat 20 atress contact, second side 104 towards support piece 40, and as with support piece 40 atress contact surface, and then, make draw piece 10 is pressed from both sides and is located support piece 40 with between the valve seat 20, through support piece 40 avoids draw piece 10 is in axial displacement's in-process, and is a plurality of radial movement appears between drawing piece 10, the influence draw piece 10 with the stability of joint between the valve seat 20.
In an embodiment, the plurality of pulling members 10 are disposed in the pump cavity 201, such that the axial length of the pulling member 10 is the same as the axial length of the pump cavity 201 of the valve seat 20, the plurality of supporting members 40 may be disposed, or the supporting member 40 has a certain axial length, so as to increase the area of the axial stressed abutting surface 50 between the supporting member 40 and the second side surface 104 of the pulling member 10, and further prevent the pulling member 10 from contracting radially towards the inside of the pump cavity 201 at a position away from the second end 102 of the pulling member 10, so as to maintain the stressed abutting between the first side surface 103 of the pulling member 10 and the valve seat 20 at different axial positions, thereby preventing the pulling member 10 from deforming or bending, and improving the stability during the pulling process.
In an embodiment, the driving member 30 is a screw rod, the screw rod includes a drawing end (not labeled in the figure), the drawing end can be clamped with the second end 102 of the drawing member 10, so that the second end 102 of the drawing member 10 abuts against the inner wall of the pump cavity 201 of the valve seat 20, the axial movement of the drawing member 10 in the inner hole of the valve box 60 can be drawn, and the radial displacement between the second end 102 of the drawing member 10 and the valve seat 20 is limited by the drawing end.
Referring to fig. 1 and 2, according to an embodiment of the present application, a first clamping member 105 is disposed at a first end 101 of the pulling member 10, a second clamping member 203 is disposed at a bottom end of the valve seat 20, and the first clamping member 105 and the second clamping member 203 are clamped in a matching manner to limit a relative displacement between the pulling member 10 and the valve seat 20;
draw second end 102 of piece 10 and be provided with third joint spare 106, driving piece 30 includes fourth joint spare 301, third joint spare 106 with fourth joint spare 301 cooperation joint, with driving piece 30 and a plurality of draw relative displacement between the piece 10.
As an example, the first clip member 105 is a boss structure extending to face one side of the valve seat 20, and the second clip member 203 is a groove adapted to the first clip member 105; further, the first clamping piece 105 is clamped with the second clamping piece 203 in a concave-convex matching manner in the radial direction;
third joint spare 106 is for facing the convex structure that the pump chamber 201 inboard extends, fourth joint spare 301 be with the recess of third joint spare 106 adaptation makes third joint spare 106 with the unsmooth cooperation joint of fourth joint spare 301, and then, realize driving piece 30 drives when drawing 10 axial displacement, through first joint spare 105 reaches second joint spare 203, and third joint spare 106 with fourth joint spare 301 realizes driving draw 10 and valve seat 20 with the synchronous axial displacement of driving piece 30, and then realize stable drawing.
In an embodiment, the pulling end of the driving member 30 is formed with a fourth catching member 301 to further improve the stability of the assembly between the driving member 30 and the pulling member 10.
Referring to fig. 7, the driving member 30 includes a first rod 302 and a second rod 303, the first rod 302 is configured to extend into the valve housing 60 and pull the second ends 102 of the plurality of pulling members 10 to move axially so as to pull the valve seat 20 with the centering sleeve 202 to move axially, and the second rod 303 is configured to be connected to the valve seat 20 without the centering sleeve 202 and a hydraulic system.
The periphery of the first rod body 302 is not required to be provided with threads so as to improve the assembly efficiency, and the periphery of the second rod body 303 is provided with threads so as to be assembled and connected with the valve seat 20 and the hydraulic system which are not provided with the centering sleeve 202 through the threads.
Referring to fig. 4 and 5, according to an embodiment of the present application, a force-receiving abutting surface 50 is provided between the supporting member 40 and the pulling member 10, and the force-receiving abutting surface 50 is an arc-shaped surface.
As an example, the support 40 has a plurality of abutment surfaces (not shown) for being in force-receiving abutment with the second side 104 of the puller 10, a force-receiving abutment surface 50 is formed between the abutment surfaces and the second side 104 of the puller 10, and the force-receiving abutment surface 50 is an arc-shaped surface to improve the stability of the force-receiving abutment between the puller 10 and the support 40.
In an embodiment, the drawing member 10 has an annular cylindrical structure, so that the first side 103 of the drawing member 10 can be completely attached to the inner wall of the pump chamber 201, and the second side 104 of the drawing member 10 can be completely attached to the driving member 30, such as a screw rod, to improve the stability during the drawing process.
Referring to fig. 4, the number of the pulling members 10 corresponds to the number of the abutting surfaces one by one.
Preferably, the area of the second side surface 104 is equal to the area of the contact surface, or the area of the contact surface is larger than the area of the second side surface 104, so as to further improve the stability between the puller 10 and the support 40.
Referring to fig. 5, according to an embodiment of the present application, wherein the supporting member 40 is cylindrical, the circumferential side of the supporting member 40 forms the stressed abutting surface 50, so that the supporting member 40 has a certain axial extension length, so that the circumferential side of the supporting member 40 is an abutting surface, the axis of the supporting member 40 coincides with the axis of the pump cavity 201, so as to improve the stability of the stressed abutting surface 50 of the drawing member 10.
According to an embodiment of the application, wherein support piece 40 includes assembly portion 401, support piece 40 passes through assembly portion 401 with the connection can be dismantled to the first end 101 of drawing piece 10, assembly portion 401 can set up to the buckle, with the first end 101 joint of drawing piece 10, and then avoid at the in-process of drawing, support piece 40 with axial displacement appears between drawing piece 10, improves the stability of atress butt, avoids a plurality of radial contraction appears between the first end 101 of drawing piece 10.
Referring to fig. 1 and 6, according to an embodiment of the present application, the valve seat 20 includes a centering sleeve 202, the centering sleeve 202 is disposed at a bottom end of the valve seat 20, the first end 101 of the drawing member 10 is clamped with the centering sleeve 202, the centering sleeve 202 includes a limiting portion 221, and the assembling portion 401 is assembled with the limiting portion 221 in an axial direction of the pump cavity 201.
The centering sleeve 202 is used to position the valve seat 20 and the valve housing 60 to prevent tilting.
The centering sleeve 202 is provided with the limiting portion 221, and after the assembling portion 401 is assembled with the limiting portion 221, the position of the supporting member 40 is limited on one hand, and the axial movement of the supporting member 40 relative to the drawing member 10 is prevented by the limiting portion 221 on the other hand.
Preferably, the limiting part 221 is arranged at the center of the centering sleeve 202, and when the assembling part 401 is arranged at the center of the supporting part 40, the supporting part 40 can be arranged at the axis position of the pump cavity 201 through the assembly of the assembling part 401 and the limiting part 221, so as to further improve the stability of the forced abutment between the supporting part 40 and the different drawing parts 10. The situation that the first end 101 of the pulling piece 10 is connected with the valve seat 20 in an unstable manner due to the fact that the pulling piece 10 moves radially in the pump cavity 201 to a large extent due to uneven stress is effectively avoided.
Referring to fig. 3, according to an embodiment of the present application, the assembling portion 401 is a shaft structure, the limiting portion 221 is a shaft hole, and the centering sleeve 202 and the supporting member 40 are detachably connected to the shaft hole through the shaft.
The shaft piece with shaft hole be assembled between/be connected between, spacing portion 221 with assembly portion 401 is located same axis, and with the coincidence of the axis of pump chamber 201.
In an embodiment, the supporting member 40 includes a holding portion 404, the holding portion 404 and the assembling portion 401 are disposed at two ends of the supporting member 40, manual installation of the supporting member 40 between the plurality of pulling members 10 is facilitated by the holding portion 404, or the supporting member 40 is taken out from the plurality of pulling members 10 is facilitated by the holding portion 404, so that assembling efficiency is improved.
According to an embodiment of the present application, wherein said support 40 comprises:
a guide 402 having a circular truncated cone structure, wherein an upper bottom surface of the guide 402 faces the first end 101 of the puller 10, and a lower bottom surface of the guide 402 faces the second end 102 of the puller 10;
and a support part 403 having a cylindrical structure, one end of which is smoothly connected to the lower bottom surface of the guide part 402, wherein the side surface of the support part 403 and the pulling element 10 form a force-bearing surface 50.
Through the convenient right of the side of guide part 402 support piece 40 assembles and fixes a position, improves assembly efficiency, supporting part 403 is the cylinder structure, just the side of supporting part 403 with the lower bottom surface of guide part 402 is smooth to be connected, and then, the accessible the toper side of guide part reduces support piece 40 by the second end 102 of drawing the piece 10 assemble to the resistance of drawing the first end 101 in-process of piece 10 avoids appearing inclining.
The supporting portion 403 is a cylindrical structure with a certain axial extension length, so as to form a stable forced abutment between the supporting portion 403 and the plurality of pulling pieces 10.
In an embodiment, the assembling portion 401 is assembled on the upper bottom surface of the guiding portion 402, the holding portion 404 is disposed on the side of the supporting portion 403 facing the second end 102 of the pulling member 10, and the holding portion 404 can be disposed in the middle of the supporting portion 403 to prevent the supporting member 40 from tilting during the assembling process.
The outer circumference of the hand-held portion 404 is provided with a screw thread (not shown) or an anti-slip ridge (not shown) to improve the assembling efficiency of a worker.
According to another aspect of the present application, there is provided a drawing system comprising the drawing apparatus described above.
Referring to fig. 8 and 9, a conventional drawing system of the valve seat 20 mainly includes a drawing device, a hydraulic system, a screw rod, a drawing claw structure and a drawing nut structure, which are in contact with the valve seat 20 and are pressed against each other.
When the existing valve seat 20 drawing device is used, the following defects or shortcomings exist:
1. the screw thread of the screw rod is easy to damage in the actual use process, so that the screw rod cannot be screwed into the puller and the pulling nut and cannot be normally used;
2. the lead screw needs to be guaranteed to be screwed for drawing the claw or drawing the nut for enough length, long time is needed, and the efficiency is low. If the screw is not screwed in place, the thread is damaged due to overlarge stress and cannot be normally used;
3. the drawing claw structure needs to ensure that the drawing claws are symmetrically arranged at two sides of the inner hole of the valve seat 20. Once the valve seat 20 is not symmetrically arranged, the valve seat can not be pulled out normally due to uneven stress;
4. the drawing claw structure is required to ensure that the drawing claw is horizontally placed on the valve seat 20. Once the drawing claw is not laid flat, the drawing claw has the defects that the thread is misplaced and cannot be screwed in or cannot be disassembled after being screwed in, and the normal use is influenced;
5. the pulling claw structure is interfered with the screw rod because the centering sleeve 202 is positioned in the inner hole (equivalent to the pump cavity 201) of the valve seat 20 assembly, the screw rod cannot be screwed into the screw rod for enough length, and the guide rod type valve body assembly cannot be pulled;
6. the drawing nut structure needs to screw the screw rod into the inner hole of the valve seat 20 assembly and then screw the screw rod tightly from the lower part of the valve seat 20 assembly. During the process of drawing the valve seat 20 assembly, the suction cavity needs to be disassembled and the nut needs to be tightened. In the process of drawing the lower valve seat 20 assembly, the drawing nut needs to be screwed after the upper water pipe is assembled, the operation is difficult, and time and labor are wasted.
The valve body assembly needs to ensure the coaxiality with the valve seat 20 assembly in the operation process. The common guide types are two, one is that the valve body assembly has four guide claws, and the guide claws are matched with the inner hole of the valve seat 20 assembly for positioning. The other valve assembly is a guide rod type valve body, and the valve body assembly is guided by an upper guide rod and a lower guide rod.
When the drawing claw structure is used for disassembling the valve seat 20 of the conventional non-righting sleeve 202 structure, the inner circle of the drawing claw is provided with full threads, and the lead screw needs to be completely screwed into the full threads (namely the bottom end of the valve seat 20), so that the drawing claw is ensured to be uniformly stressed.
The valve seat 20 with the structure of the centering sleeve 202 is interfered with the lead screw because the centering sleeve 202 is positioned at the bottom end of the valve, and the lead screw cannot be screwed into the valve seat 20 for a sufficient length to be assembled and connected with the valve seat 20 from the bottom end of the valve seat 20, so that the pull claw is not uniformly stressed at different axial positions.
The drawing device comprises an extender (equivalent to the supporting piece 40), a drawing claw (equivalent to the drawing piece 10), an O-shaped ring (not marked in the drawing), a hoop (not marked in the drawing), a flange plate (not marked in the drawing), a nut (not marked in the drawing), a screw rod (equivalent to the driving piece 30) and a hydraulic system 70 assembly.
The supporting piece 40 is a circular truncated cone-shaped structure with a guide post (equivalent to the assembling portion 401), the guide post is matched with the valve seat 20 centering sleeve 202 in use, the outer circular surface (equivalent to the supporting portion 403) of the circular truncated cone props open the pulling claw, and the flanging (equivalent to the first clamping piece 105) of the pulling claw is stably and reliably buckled on the end face of the bottom of the valve seat 20 in the pulling process.
The drawing claw is divided into two parts, and is provided with a flanging (equivalent to the first clamping piece 105), a step hole (equivalent to the third clamping piece 106), an outer circular shoulder and an O-shaped ring groove. An inner hole of the pulling claw is matched with an outer circular surface (equivalent to an abutting surface) of the extender, a flanging is matched with the bottom end surface of the valve seat 20, and a stepped hole (equivalent to a third clamping piece 106) is matched with a circular table at the bottom of the screw rod (equivalent to a fourth clamping piece 301), so that the pulling claw can move upwards along with the screw rod under the action of a hydraulic system;
the O-shaped ring groove ensures that the two parts of the drawing claws are integrated and can be symmetrically arranged and adjusted in the installation process. The cooperation of the circular shoulder and the clamp ensures that the drawing claw is a rigid whole in the process of drawing the valve seat 20 and cannot be opened.
The bottom of the screw rod is provided with a shoulder surface matched with the shoulder hole of the drawing claw, the two ends of the other part are provided with internal threads matched with the nut, and the middle part is provided with a polished rod (equivalent to the first rod body 302), so that the thread screwing length of the valve seat 20 assembly under drawing is saved.
The flange is a cylindrical disk with steps and is matched with the threaded inner hole of the valve box 60 to provide a horizontally placed plane for a hydraulic system.
The nut is an outer hexagonal nut and is matched with the top of the second rod body 303 of the screw rod.
The hydraulic system 70 includes a hydraulic cylinder and a manual oil pump, and applies force to the screw to control the pulling claw to pull out the valve seat 20. Other electrical and mechanical arrangements for providing the pulling force may be used in place of the hydraulic system 70.
It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these 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 (7)
1. A drawing apparatus, comprising:
the drawing pieces (10) comprise first ends (101) and second ends (102), the first ends (101) are used for being clamped with the bottom end of the valve seat (20), the second ends (102) are used for being connected with the driving piece (30), the drawing pieces (10) are arranged in a pump cavity (201) of the valve seat (20), and the drawing pieces (10) are circumferentially arranged at intervals along the pump cavity (201);
the support piece (40) is arranged on the inner side of the drawing pieces (10) and is in stressed abutment with the drawing pieces (10) so as to limit the radial displacement between the first end (101) of the drawing pieces (10) and the valve seat (20);
the supporting piece (40) comprises a mounting part (401), and the supporting piece (40) is detachably connected with the first end (101) of the drawing piece (10) through the mounting part (401);
the valve seat (20) comprises a centering sleeve (202), the centering sleeve (202) is arranged at the bottom end of the valve seat (20), the first end (101) of the drawing part (10) is clamped with the centering sleeve (202), the centering sleeve (202) comprises a limiting part (221), and the assembling part (401) is axially assembled and connected with the limiting part (221) in the pump cavity (201);
the assembling part (401) is of a shaft piece structure, the limiting part (221) is of a shaft hole, the righting sleeve (202) and the supporting piece (40) are connected in a detachable mode through the shaft piece and the shaft hole, and the shaft piece is connected with the shaft hole in an assembling mode.
2. The pulling device according to claim 1, characterized in that between said support (40) and said pulling element (10) there is a forced abutment surface (50), said forced abutment surface (50) being an arc-shaped surface.
3. The pulling device according to claim 2, characterized in that said support (40) is cylindrical, the peripheral side of said support (40) forming said forced abutment surface (50).
4. The drawing device according to claim 1, characterized in that said support (40) comprises:
a guide part (402) having a circular truncated cone structure, wherein an upper bottom surface of the guide part (402) faces a first end (101) of the drawing member (10), and a lower bottom surface of the guide part (402) faces a second end (102) of the drawing member (10);
and the supporting part (403) is of a cylindrical structure, one end of the supporting part is smoothly connected with the lower bottom surface of the guide part (402), and the side surface of the supporting part (403) and the drawing piece (10) form a stressed abutting surface (50).
5. The pulling device according to any one of the claims 1 to 4, characterized in that the first end (101) of the pulling member (10) is provided with a first snap-in member (105), the bottom end of the valve seat (20) is provided with a second snap-in member (203), and the first snap-in member (105) and the second snap-in member (203) are cooperatively snapped to limit the relative displacement between the pulling member (10) and the valve seat (20);
draw second end (102) of piece (10) and be provided with third joint spare (106), driving piece (30) include fourth joint spare (301), third joint spare (106) with fourth joint spare (301) cooperation joint, with driving piece (30) and a plurality of draw relative displacement between piece (10).
6. The pulling device of claim 5, characterized in that the first snap-in element (105) is a boss structure extending towards the side of the valve seat (20) and the third snap-in element (106) is a boss structure extending towards the inside of the pump chamber (201).
7. Drawing system, characterized in that it comprises a drawing device according to any one of claims 1 to 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111530147.8A CN114367807B (en) | 2021-12-14 | 2021-12-14 | Drawing device and drawing system |
| PCT/CN2022/134104 WO2023109462A1 (en) | 2021-12-14 | 2022-11-24 | Drawing device and drawing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111530147.8A CN114367807B (en) | 2021-12-14 | 2021-12-14 | Drawing device and drawing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114367807A CN114367807A (en) | 2022-04-19 |
| CN114367807B true CN114367807B (en) | 2023-03-14 |
Family
ID=81140454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111530147.8A Active CN114367807B (en) | 2021-12-14 | 2021-12-14 | Drawing device and drawing system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114367807B (en) |
| WO (1) | WO2023109462A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114367807B (en) * | 2021-12-14 | 2023-03-14 | 烟台杰瑞石油装备技术有限公司 | Drawing device and drawing system |
| CN115446772B (en) * | 2022-09-28 | 2024-05-24 | 北京奥菲德油气科技有限公司 | Valve seat extractor |
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| CN2542396Y (en) * | 2002-04-13 | 2003-04-02 | 中国石化胜利油田有限公司孤东采油厂 | Valve seat pulling tool for plunger displacement pump of fracturing truck |
| CN203863613U (en) * | 2014-06-05 | 2014-10-08 | 中国人民解放军第五七二一工厂 | Tight-holding drawing-type bearing neck bush disassembly tool |
| CN204308899U (en) * | 2014-12-18 | 2015-05-06 | 李瑞杰 | Cylinder drawing device |
| CN208100257U (en) * | 2018-04-23 | 2018-11-16 | 中国石油集团川庆钻探工程有限公司 | A kind of fracturing pump valve seat draw-off gear |
| CN208342730U (en) * | 2018-06-12 | 2019-01-08 | 烟台杰瑞石油装备技术有限公司 | A kind of thin-walled sliding sleeve disassembling fixture |
| CN215093326U (en) * | 2021-06-30 | 2021-12-10 | 兰州创百特交通科技有限公司 | Opposite-jacking type puller device |
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| CN2382516Y (en) * | 1999-07-15 | 2000-06-14 | 孙殿军 | Cylinder drawing device |
| US7996972B2 (en) * | 2007-11-26 | 2011-08-16 | Chih Kuo Hu | Puller driving structure |
| CN205200963U (en) * | 2015-10-26 | 2016-05-04 | 濮阳市中信激扬机械制造有限公司 | Tool for drawing valve seat |
| US10639752B2 (en) * | 2017-03-28 | 2020-05-05 | Alpha 3D Llc | Valve seat extraction device |
| CN207058006U (en) * | 2017-08-04 | 2018-03-02 | 汤生辉 | A kind of pipe sleeve puller |
| CN211589970U (en) * | 2019-12-19 | 2020-09-29 | 中国第一汽车股份有限公司 | Adjustable bearing puller |
| CN114367807B (en) * | 2021-12-14 | 2023-03-14 | 烟台杰瑞石油装备技术有限公司 | Drawing device and drawing system |
-
2021
- 2021-12-14 CN CN202111530147.8A patent/CN114367807B/en active Active
-
2022
- 2022-11-24 WO PCT/CN2022/134104 patent/WO2023109462A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2542396Y (en) * | 2002-04-13 | 2003-04-02 | 中国石化胜利油田有限公司孤东采油厂 | Valve seat pulling tool for plunger displacement pump of fracturing truck |
| CN203863613U (en) * | 2014-06-05 | 2014-10-08 | 中国人民解放军第五七二一工厂 | Tight-holding drawing-type bearing neck bush disassembly tool |
| CN204308899U (en) * | 2014-12-18 | 2015-05-06 | 李瑞杰 | Cylinder drawing device |
| CN208100257U (en) * | 2018-04-23 | 2018-11-16 | 中国石油集团川庆钻探工程有限公司 | A kind of fracturing pump valve seat draw-off gear |
| CN208342730U (en) * | 2018-06-12 | 2019-01-08 | 烟台杰瑞石油装备技术有限公司 | A kind of thin-walled sliding sleeve disassembling fixture |
| CN215093326U (en) * | 2021-06-30 | 2021-12-10 | 兰州创百特交通科技有限公司 | Opposite-jacking type puller device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023109462A1 (en) | 2023-06-22 |
| CN114367807A (en) | 2022-04-19 |
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