CN109848916B - Blow-down valve sleeve extraction tool and valve sleeve disassembly and extraction method thereof - Google Patents
Blow-down valve sleeve extraction tool and valve sleeve disassembly and extraction method thereof Download PDFInfo
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- CN109848916B CN109848916B CN201910209865.1A CN201910209865A CN109848916B CN 109848916 B CN109848916 B CN 109848916B CN 201910209865 A CN201910209865 A CN 201910209865A CN 109848916 B CN109848916 B CN 109848916B
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- pull claw
- sleeve
- valve sleeve
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- 238000000605 extraction Methods 0.000 title claims abstract description 33
- 210000000078 claw Anatomy 0.000 claims abstract description 126
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 238000010009 beating Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000002783 friction material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a drain valve sleeve extraction tool which comprises a vertically-used ejector rod, wherein the lower end of the ejector rod is an abutting end, the upper end of the ejector rod is a rotary force application end, an external thread is arranged on the ejector rod and is provided with a support arm, the middle part of the support arm is vertically provided with a threaded hole and is in rotary joint fit with the ejector rod, two sides of the support arm are respectively hinged with a strip-shaped pull claw arm, the whole pull claw arm extends towards the abutting end direction of the ejector rod, the length of the pull claw arm is greater than the depth of a valve sleeve, the end part, close to the abutting end of the ejector rod, of the pull claw arm extends outwards to be provided with a pull claw, when the pull claw arm is folded to be in an abutting ejector rod state, the distance between the outer ends of the two pull claw arms is smaller than the diameter of the valve sleeve, the thickness of the pull claw is smaller than the height of a lower slotting of the valve sleeve, and the width of the pull claw is smaller than the slotting width, so that the pull claw can be inserted into a slotting. The invention also discloses a valve sleeve disassembly and extraction method of the valve sleeve type blow-down valve. The valve sleeve type blow-down valve can conveniently realize the valve sleeve disassembly of the valve sleeve type blow-down valve, can improve the valve sleeve disassembly efficiency and avoid the damage of the valve sleeve caused by forced disassembly.
Description
Technical Field
The invention relates to a blow-down valve disassembly tool, in particular to a blow-down valve sleeve extraction tool and a valve sleeve disassembly and extraction method thereof.
Background
The valve sleeve type blow-down valve is a common manual blow-down switch valve which is developed from a stop valve and is driven by a hand wheel to rotate 90 degrees to lift a valve rod so as to realize the purpose of opening and closing. In the production process of natural gas, liquid-solid impurities in raw gas need to be separated, and the separated impurities need to be discharged outside the system. At present, valve sleeve type blow-down valves are often adopted to discharge liquid and solid impurities.
The structure of a general valve pocket type blow-down valve comprises a valve body, wherein a valve pocket installation cavity is formed in the valve body, a valve pocket is vertically installed in the valve pocket installation cavity, the bottom end of the valve pocket is downwards communicated with a pipeline interface on one side of the valve body, a groove is formed in the peripheral side of the lower portion of the valve pocket and is communicated with a pipeline interface on the other side of the valve body along the circumferential direction, a valve core is arranged in the valve pocket, the upper end of the valve core is upwards connected to the outside of the valve body through a valve rod and is provided with a hand wheel, and external threads are arranged on the valve rod and are matched with internal threads of a connecting piece on the upper portion of the valve body. Thus, the upper and lower positions of the valve core are adjusted by rotating the valve rod through the hand wheel, and the communication and closing of pipeline interfaces at two sides of the valve body can be realized. The self-cleaning device has the advantages of small moment, simple and convenient operation, easy realization of quick opening and closing, self-cleaning in the sewage discharging process and the like.
The valve sleeve type blow-down valve is required to ensure tightness, the valve sleeve and the valve sleeve mounting cavity are matched tightly, and the valve sleeve type blow-down valve has the sealing ring to ensure matched sealing effect. Meanwhile, when the sewage is used, waste liquid impurities often have larger corrosiveness, faults such as damage to a valve core and a valve seat sealing ring of the sewage valve are easy to occur, and the valve sleeve is required to be taken out for cleaning, checking or replacing the sealing ring in the maintenance process of the valve.
Since the valve sleeve and the valve cavity are sealed by the sealing ring, after the sealing ring is damaged or the impurities block scaling, the valve sleeve is difficult to extract because the valve sleeve has not enough gripping position. The method of knocking the valve sleeve, pipe tongs seaming and the like is usually adopted on site, so that people are easily injured by slipping, and the valve sleeve is easily damaged.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: how to provide a drain valve pocket extraction tool and a valve pocket extraction method thereof which can conveniently realize the valve pocket disassembly, improve the valve pocket disassembly efficiency and avoid the damage of the valve pocket caused by forced disassembly.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides a drain valve pocket extraction tool and valve pocket dismantles extraction method thereof, which is characterized in that, the drain valve pocket extraction tool comprises a push rod which is vertical when using, the push rod lower extreme is the butt end, the upper end is rotatory application of force end, be provided with the external screw thread on the push rod and install a support arm, the support arm middle part vertically sets up screw hole and push rod and connects the cooperation soon, the support arm both sides respectively articulate and have a rectangular form pull claw arm, pull claw arm whole orientation push rod butt direction extends to set up, pull claw arm length is greater than the valve pocket degree of depth, pull claw arm is close to the tip of push rod butt end outwards extension and is provided with the pull claw, pull claw arm draws in and is in when laminating push rod state two pull claw outer end intervals and be less than the valve pocket diameter, pull claw thickness is less than valve pocket lower part fluting height and pull claw width and is less than fluting width makes and draws claw can insert in the fluting.
Therefore, when the valve sleeve is disassembled, after the connecting piece at the upper part of the valve body is disassembled and the upper end of the valve sleeve is exposed, the valve sleeve can be extracted by means of the tool. When the valve sleeve is extracted, the pull claw arm is firstly folded to be close to the ejector rod, the abutting end of the ejector rod and the pull claw arm are downwards fed into the valve sleeve, the abutting end of the ejector rod abuts against the bottom of the valve body below the valve sleeve mounting cavity, and then the pull claw arm is outwards opened, so that the pull claw is inserted into the valve sleeve slot. Then, only the upper end of the pull claw arm and the support arm are held to be fixed, the ejector rod is rotated, and the valve sleeve can be gradually driven to be steadily lifted out of the valve sleeve mounting cavity by means of threaded fit between the ejector rod and the support arm. Therefore, the valve sleeve can be conveniently and stably disassembled and extracted, the disassembly efficiency is improved, and the valve sleeve can be prevented from being damaged due to forced disassembly.
Further, the rotary force application end of the ejector rod is provided with a force application rod inserting hole which transversely penetrates through the ejector rod.
Therefore, the force application rod can be conveniently inserted into the force application rod inserting hole, and then the ejector rod is driven to rotate in a mode of rotating the force application rod, so that force application is facilitated.
Further, the cross section of the rotary force application end of the ejector rod is a regular polygon with even sides.
Therefore, the spanner can be conveniently clamped or sleeved, and the ejector rod is enabled to rotate by applying force to the spanner, so that the force application is more convenient.
Further, the ejector rod abutting end is provided with an abutting seat, the end part of the ejector rod is rotatably arranged in the abutting seat by means of a bearing, and the lower end face of the abutting seat forms an abutting face.
Like this, the butt seat relies on the fixed butt of butt face to install the valve body bottom position in chamber below the valve pocket, and when rotatory ejector pin, the butt seat keeps fixedly can avoid the valve body to suffer the damage, reduces ejector pin rotation resistance simultaneously, more conveniently realizes dismantling and draws.
Further, the lower end of the abutting seat is fixedly provided with a layer of friction material for improving friction force.
Therefore, the friction force can be further improved, and the ejector rod is prevented from rotating to drive the abutting seat to rotate.
Further, the upper surface of the pulling claw is provided with fine groove threads.
Therefore, when the pulling claw is used for pulling the slotting to apply force, the thin fluted threads can be used for preventing the pulling claw from slipping out of the slotting due to slipping on the slotting of the valve sleeve during lifting, so that the inner wall of the valve sleeve is damaged.
Further, two sides of the upper end of the pulling claw arm are provided with upwards extending lugs which are symmetrically arranged left and right, the end part of the supporting arm is clamped in the lugs, the lugs are provided with hinge shaft holes, and the pulling claw arm is hinged and installed on the supporting arm through the through hinge shaft.
Thus, the device is convenient to install and favorable for stress balance.
Further, the upper ends of the pull claw arms are close to the positions of the support arms, an adjusting screw hole is respectively formed in the opposite directions of the two pull claw arms in a penetrating mode, the two adjusting screw holes are located on the same horizontal plane, an adjusting screw rod is arranged in the adjusting screw holes in a matched mode, the distance from the adjusting screw rod to the pull claw is larger than the distance from the upper port of the valve sleeve to the lower grooving, two symmetrical external threads are arranged on the adjusting screw rod and are respectively matched in the adjusting screw hole, one end of the adjusting screw rod penetrates through the corresponding adjusting screw hole, then a section of extending section horizontally extends outwards, and a handle is arranged at the outer end of the adjusting screw rod.
Like this, firstly can drive adjusting screw through the rotation handle and rotate, and then drive the reliable control that realizes two pull claw arms and open and shut for the instrument inserts the in-process, and pull claw arm can keep in folding state reliably, avoids opening back scratch sleeve inner wall, and controllable pull claw arm is opened after pull claw arm is put down in place, makes and pulls the claw and can insert in the sleeve lower part fluting reliably, and after pulling the claw inserted the fluting simultaneously, also can not produce pull claw arm and skid to draw in the phenomenon that leads to pull claw to slide out damage valve barrel inner wall in the in-process of pulling. Secondly, in the process of rotating the ejector rod, the valve sleeve can be more conveniently ensured not to synchronously rotate along with the ejector rod and obtain upward lifting force by holding the handle.
Further, an adjusting member is arranged at the upper end of the pull claw arm, close to the support arm, and extends outwards along the horizontal direction, and the adjusting screw hole is formed in the adjusting member.
Thus, the screw hole is more convenient to adjust and set.
Further, the extension section of the adjusting screw is further screwed with a locking nut, the locking nut is used for locking the adjusting screw after the adjusting screw is adjusted in place, the stability of opening and closing control of the pull claw arm is guaranteed, the fixed locking of the expansion angle of the pull claw arm in the valve sleeve extraction process is guaranteed, and the inner wall of the valve sleeve is prevented from being damaged due to sliding caused by sliding of the pull claw.
Further, a section of yielding section is further arranged at the position, close to the abutting end, of the lower end of the ejector rod, the length of the yielding section is larger than the depth of a threaded hole in the middle of the support arm, and the diameter of the yielding section is smaller than that of the external thread section on the ejector rod and is connected with the external thread section, so that the support arm can rotate and fall into the yielding section; the novel anti-falling device comprises a push rod, and is characterized by further comprising a slide rod sleeve, wherein the inner diameter of the slide rod sleeve is larger than the maximum outer diameter of the push rod, a heavy hammer is sleeved on the slide rod sleeve in a sliding mode, a limiting round table for preventing the heavy hammer from sliding out is arranged at each of two ends of the slide rod sleeve, a force application conducting block is arranged at each of two ends of the heavy hammer, and a circle of abdicating groove capable of containing the limiting round table is formed in the outer end of the force application conducting block, which is away from the heavy hammer.
Therefore, before the valve sleeve is disassembled and extracted, the valve sleeve is usually in a clamping and blocking state, and the ejector rod can not be rotated due to the fact that the ejector rod is directly disassembled with great force. Therefore, the weight structure is added. After a pull claw arm stretches into a sleeve and is controlled to be unfolded so that the pull claw is inserted into a sleeve slot, the pull claw is firstly propped downwards to be connected to the side surface of the lower part of the slot, then the pull claw arm is kept to be motionless to rotate a top rod until a support arm falls into a yielding section, the support arm is propped against a supporting seat to limit and prevent the top rod from sliding out, but at the moment, no threaded fit exists between the top rod and the support arm any more, then a slide bar sleeve is sleeved outside the top rod, a limiting round platform and the support arm at one end of the slide bar sleeve are attached, then the slide bar sleeve is kept in a vertical state, a weight is used for hammering the support arm from top to bottom, downward force of the weight is transmitted to the sleeve through the support arm, so that the sleeve is loosened relative to the valve body, then the slide bar sleeve is taken down, and the top rod is screwed into the support arm and screwed to the lower end supporting seat and the bottom of the valve body below a valve sleeve is fixedly propped and connected to the valve housing; and then the adjusting screw is kept motionless by the handle, and the ejector rod is rotated, so that the valve sleeve does not synchronously rotate along with the ejector rod and can be lifted upwards by means of threaded fit with the ejector rod until the valve sleeve is taken out upwards. Therefore, the sleeve can be beaten by the heavy hammer, the sleeve is loosened to be beneficial to extraction, and meanwhile, the beating is convenient, quick and reliable to realize, and the screw thread of the ejector rod cannot be damaged during beating, so that the valve sleeve extraction is fast and reliable in colleges and universities.
The invention also discloses a valve sleeve disassembly and extraction method of the valve sleeve type blow-down valve, which is characterized by comprising the following steps:
a, firstly, acquiring a blow-down valve sleeve extraction tool as described above;
b, when the valve sleeve is disassembled, firstly, the connecting piece at the upper part of the valve body is disassembled and the upper end of the valve sleeve is exposed; the valve sleeve extracting tool of the blow-down valve is adopted, the pull claw arm is folded to be close to the ejector rod by rotating the adjusting screw rod, the ejector rod is rotated to adjust the position of the support arm, so that the distance from the abutting end of the ejector rod to the pull claw is consistent with the position of the valve sleeve slotting to the bottom of the valve body, which is measured in advance, and the abutting end of the ejector rod and the pull claw arm are downwards fed into the valve sleeve;
c, when the push rod abutting end contacts with the bottom of the valve body, the pull claw automatically aligns to the slotting position, and then the adjusting screw is rotated to enable the pull claw arm to be opened and the pull claw to be inserted into the corresponding slotting;
d, rotating the ejector rod to downwards abut against the lower side surface of the slotting, then keeping the pull claw arm to be motionless to rotate the ejector rod upwards until the support arm falls into the abdication section, limiting the support arm by the abutting seat to prevent the ejector rod from sliding out, and at the moment, no threaded fit exists between the ejector rod and the support arm;
e, sleeving the sliding rod sleeve outside the ejector rod, enabling a limit round table at one end of the sliding rod sleeve to be attached to the support arm, keeping the sliding rod sleeve in a vertical state, hammering the support arm from top to bottom by using a heavy hammer, and transmitting downward force of the heavy hammer to the sleeve through the support arm, so that the sleeve is loose relative to downward displacement of the valve body;
f, taking down the sliding rod sleeve, screwing the ejector rod into the support arm and screwing the ejector rod into the lower end abutting seat to fixedly abut against the bottom of the valve body below the valve sleeve mounting cavity; the adjusting screw is kept still by the handle, the ejector rod is continuously rotated downwards, and the valve sleeve is gradually driven to be steadily lifted out of the valve sleeve mounting cavity by means of threaded fit between the ejector rod and the support arm.
In summary, the valve pocket disassembly of the valve pocket type blow-down valve can be conveniently realized, the valve pocket disassembly efficiency can be improved, and the damage of the valve pocket caused by forced disassembly can be avoided.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of a tool for extracting a valve pocket of a blow-down valve and a method for extracting the valve pocket of the blow-down valve according to the present invention.
Fig. 2 is a perspective view of fig. 1.
Fig. 3 is a schematic view of the tool of fig. 1 with the slide bar sleeve removed.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Preferred embodiments: as shown in figures 1-3, the drain valve sleeve extraction tool and the valve sleeve disassembly and extraction method thereof comprise a push rod 1 which is vertical in use, wherein the lower end of the push rod 1 is an abutting end, the upper end is a rotary force application end, an external thread is arranged on the push rod 1 and is provided with a support arm 2, the middle part of the support arm 2 is vertically provided with a threaded hole in a screwed connection fit with the push rod, two sides of the support arm 2 are respectively hinged with a strip-shaped pull claw arm 3, the whole pull claw arm 3 extends towards the abutting end direction of the push rod, the length of the pull claw arm 3 is greater than the valve sleeve depth, the end part of the pull claw arm close to the abutting end of the push rod is outwards extended and provided with a pull claw 4, when the pull claw arm 3 is folded to be in an abutting push rod state, the distance between the outer ends of the two pull claws is smaller than the diameter of the valve sleeve, the thickness of the pull claw 4 is smaller than the grooving height of the lower part of the valve sleeve, and the pull claw width is smaller than the grooving width, so that the pull claw can be inserted into a grooving.
Therefore, when the valve sleeve is disassembled, after the connecting piece at the upper part of the valve body is disassembled and the upper end of the valve sleeve is exposed, the valve sleeve can be extracted by means of the tool. When the valve sleeve is extracted, the pull claw arm is firstly folded to be close to the ejector rod, the abutting end of the ejector rod and the pull claw arm are downwards fed into the valve sleeve, the abutting end of the ejector rod abuts against the bottom of the valve body below the valve sleeve mounting cavity, and then the pull claw arm is outwards opened, so that the pull claw is inserted into the valve sleeve slot. Then, only the upper end of the pull claw arm and the support arm are held to be fixed, the ejector rod is rotated, and the valve sleeve can be gradually driven to be steadily lifted out of the valve sleeve mounting cavity by means of threaded fit between the ejector rod and the support arm. Therefore, the valve sleeve can be conveniently and stably disassembled and extracted, the disassembly efficiency is improved, and the valve sleeve can be prevented from being damaged due to forced disassembly.
The rotary force application end of the ejector rod 1 is provided with a force application rod inserting hole 5 which transversely penetrates through the ejector rod.
Therefore, the force application rod can be conveniently inserted into the force application rod inserting hole, and then the ejector rod is driven to rotate in a mode of rotating the force application rod, so that force application is facilitated.
Wherein the cross section of the rotary force application end of the ejector rod 1 is a regular polygon with even sides.
Therefore, the spanner can be conveniently clamped or sleeved, and the ejector rod is enabled to rotate by applying force to the spanner, so that the force application is more convenient.
Wherein, ejector pin butt end is provided with a butt seat 6, and ejector pin 1 tip relies on the bearing rotatably to install in butt seat 6, and butt seat lower terminal surface forms the butt face.
Like this, the butt seat relies on the fixed butt of butt face to install the valve body bottom position in chamber below the valve pocket, and when rotatory ejector pin, the butt seat keeps fixedly can avoid the valve body to suffer the damage, reduces ejector pin rotation resistance simultaneously, more conveniently realizes dismantling and draws.
Wherein, the lower extreme of butt seat 6 fixedly is provided with the friction material that one deck was used for improving frictional force.
Therefore, the friction force can be further improved, and the ejector rod is prevented from rotating to drive the abutting seat to rotate.
Wherein the upper surface of the pulling claw 4 is provided with fine groove threads.
Therefore, when the pulling claw is used for pulling the slotting to apply force, the thin fluted threads can be used for preventing the pulling claw from slipping out of the slotting due to slipping on the slotting of the valve sleeve during lifting, so that the inner wall of the valve sleeve is damaged.
The two sides of the upper end of the pull claw arm 3 are provided with lugs which are symmetrically arranged left and right and extend upwards, the end part of the support arm 2 is clamped in the lugs by the lugs, the lugs are provided with hinge shaft holes, and the pull claw arm is hinged and installed on the support arm through a penetrating hinge shaft.
Thus, the device is convenient to install and favorable for stress balance.
Wherein, draw claw arm 3 upper end to be close to the support arm position, run through respectively along two opposite directions of drawing claw arm and be provided with an adjusting screw in two adjusting screw are located same horizontal plane and its fit in and be provided with an adjusting screw 7, adjusting screw 7 is greater than valve barrel upper port to lower part fluting distance to drawing claw distance, be provided with two sections external screw threads of symmetry on the adjusting screw 7 and respectively cooperate in an adjusting screw, one end of adjusting screw passes behind the corresponding adjusting screw a section extension section of horizontal outside extension and is provided with handle 8 in the outer end.
Like this, firstly can drive adjusting screw through the rotation handle and rotate, and then drive the reliable control that realizes two pull claw arms and open and shut for the instrument inserts the in-process, and pull claw arm can keep in folding state reliably, avoids opening back scratch sleeve inner wall, and controllable pull claw arm is opened after pull claw arm is put down in place, makes and pulls the claw and can insert in the sleeve lower part fluting reliably, and after pulling the claw inserted the fluting simultaneously, also can not produce pull claw arm and skid to draw in the phenomenon that leads to pull claw to slide out damage valve barrel inner wall in the in-process of pulling. Secondly, in the process of rotating the ejector rod, the valve sleeve can be more conveniently ensured not to synchronously rotate along with the ejector rod and obtain upward lifting force by holding the handle.
Wherein, the upper end of the pull claw arm 3 is close to the position of the support arm and extends outwards along the horizontal direction, and an adjusting member 9 is arranged on the adjusting member 9 through an adjusting screw hole.
Thus, the screw hole is more convenient to adjust and set.
The extension section of the adjusting screw 7 rod is further screwed with a locking nut 10, the locking nut is used for locking the adjusting screw after the adjusting screw is adjusted in place, the stability of opening and closing control of the pull claw arm is guaranteed, the fixed locking of the expansion angle of the pull claw arm in the valve sleeve extraction process is guaranteed, and the inner wall of the valve sleeve is prevented from being damaged due to the fact that the pull claw slides out due to slipping.
The lower end of the ejector rod 1 is further provided with a section of yielding section 11 at the position close to the abutting end, the length of the yielding section 11 is greater than the depth of a threaded hole in the middle of the support arm, and the diameter of the yielding section is smaller than that of an external thread section on the ejector rod and is connected with the external thread section, so that the support arm can rotate and fall into the yielding section; the novel anti-slip device comprises a push rod, and is characterized by further comprising a slide rod sleeve 12, wherein the inner diameter of the slide rod sleeve 12 is larger than the maximum outer diameter of the push rod, a heavy punch 13 is sleeved on the slide rod sleeve in a sliding manner, a limiting round table 14 for preventing the heavy punch from sliding out is arranged at each of two ends of the slide rod sleeve 12, a force application conduction block 15 is arranged at each of two ends of the heavy punch 13, and a circle of abdicating groove capable of containing the limiting round table 14 is formed in the outer end of the force application conduction block 15, which is away from the heavy punch.
Therefore, before the valve sleeve is disassembled and extracted, the valve sleeve is usually in a clamping and blocking state, and the ejector rod can not be rotated due to the fact that the ejector rod is directly disassembled with great force. Therefore, the weight structure is added. After a pull claw arm stretches into a sleeve and is controlled to be unfolded so that the pull claw is inserted into a sleeve slot, the pull claw is firstly propped downwards to be connected to the side surface of the lower part of the slot, then the pull claw arm is kept to be motionless to rotate a top rod until a support arm falls into a yielding section, the support arm is propped against a supporting seat to limit and prevent the top rod from sliding out, but at the moment, no threaded fit exists between the top rod and the support arm any more, then a slide bar sleeve is sleeved outside the top rod, a limiting round platform and the support arm at one end of the slide bar sleeve are attached, then the slide bar sleeve is kept in a vertical state, a weight is used for hammering the support arm from top to bottom, downward force of the weight is transmitted to the sleeve through the support arm, so that the sleeve is loosened relative to the valve body, then the slide bar sleeve is taken down, and the top rod is screwed into the support arm and screwed to the lower end supporting seat and the bottom of the valve body below a valve sleeve is fixedly propped and connected to the valve housing; and then the adjusting screw is kept motionless by the handle, and the ejector rod is rotated, so that the valve sleeve does not synchronously rotate along with the ejector rod and can be lifted upwards by means of threaded fit with the ejector rod until the valve sleeve is taken out upwards. Therefore, the sleeve can be beaten by the heavy hammer, the sleeve is loosened to be beneficial to extraction, and meanwhile, the beating is convenient, quick and reliable to realize, and the screw thread of the ejector rod cannot be damaged during beating, so that the valve sleeve extraction is fast and reliable in colleges and universities.
The invention also discloses a valve sleeve disassembly and extraction method of the valve sleeve type blow-down valve, which comprises the following steps:
a, firstly, acquiring a blow-down valve sleeve extraction tool as described above;
b, when the valve sleeve is disassembled, firstly, the connecting piece at the upper part of the valve body is disassembled and the upper end of the valve sleeve is exposed; the valve sleeve extracting tool of the blow-down valve is adopted, the pull claw arm is folded to be close to the ejector rod by rotating the adjusting screw rod, the ejector rod is rotated to adjust the position of the support arm, so that the distance from the abutting end of the ejector rod to the pull claw is consistent with the position of the valve sleeve slotting to the bottom of the valve body, which is measured in advance, and the abutting end of the ejector rod and the pull claw arm are downwards fed into the valve sleeve;
c, when the push rod abutting end contacts with the bottom of the valve body, the pull claw automatically aligns to the slotting position, and then the adjusting screw is rotated to enable the pull claw arm to be opened and the pull claw to be inserted into the corresponding slotting;
d, rotating the ejector rod to downwards abut against the lower side surface of the slotting, then keeping the pull claw arm to be motionless to rotate the ejector rod upwards until the support arm falls into the abdication section, limiting the support arm by the abutting seat to prevent the ejector rod from sliding out, and at the moment, no threaded fit exists between the ejector rod and the support arm;
e, sleeving the sliding rod sleeve outside the ejector rod, enabling a limit round table at one end of the sliding rod sleeve to be attached to the support arm, keeping the sliding rod sleeve in a vertical state, hammering the support arm from top to bottom by using a heavy hammer, and transmitting downward force of the heavy hammer to the sleeve through the support arm, so that the sleeve is loose relative to downward displacement of the valve body;
f, taking down the sliding rod sleeve, screwing the ejector rod into the support arm and screwing the ejector rod into the lower end abutting seat to fixedly abut against the bottom of the valve body below the valve sleeve mounting cavity; the adjusting screw is kept still by the handle, the ejector rod is continuously rotated downwards, and the valve sleeve is gradually driven to be steadily lifted out of the valve sleeve mounting cavity by means of threaded fit between the ejector rod and the support arm.
In summary, the valve pocket disassembly of the valve pocket type blow-down valve can be conveniently realized, the valve pocket disassembly efficiency can be improved, and the damage of the valve pocket caused by forced disassembly can be avoided.
Claims (7)
1. The valve sleeve disassembly and extraction method of the valve sleeve type blow-down valve is characterized by comprising the following steps of:
a, firstly, acquiring a blow-down valve sleeve extraction tool; the drain valve sleeve extracting tool comprises a vertical ejector rod in use, wherein the lower end of the ejector rod is an abutting end, the upper end of the ejector rod is a rotary force application end, an external thread is arranged on the ejector rod and is provided with a support arm, a threaded hole is vertically arranged in the middle of the support arm and is in screwed fit with the ejector rod, two sides of the support arm are respectively hinged with a strip-shaped pull claw arm, the whole pull claw arm extends towards the abutting end direction of the ejector rod, the length of the pull claw arm is larger than the depth of a valve sleeve, the end part, close to the abutting end of the ejector rod, of the pull claw arm extends outwards to be provided with a pull claw, when the pull claw arm is folded to be in an abutting ejector rod state, the distance between the outer ends of the two pull claw arms is smaller than the diameter of the valve sleeve, and the thickness of the pull claw is smaller than the grooving height of the lower part of the valve sleeve and the width of the pull claw is smaller than the grooving width, so that the pull claw can be inserted into a grooving;
The ejector rod abutting end is provided with an abutting seat, the end part of the ejector rod is rotatably arranged in the abutting seat by virtue of a bearing, and the lower end surface of the abutting seat forms an abutting surface;
The upper ends of the pull claw arms are close to the support arm, an adjusting screw hole is respectively penetrated in the opposite directions of the two pull claw arms, the two adjusting screw holes are positioned on the same horizontal plane, an adjusting screw rod is arranged in the adjusting screw holes in a matched mode, the distance from the adjusting screw rod to the pull claw is larger than the distance from the upper port of the valve sleeve to the lower grooving, two symmetrical external threads are arranged on the adjusting screw rod and are respectively matched in the adjusting screw hole, one end of the adjusting screw rod penetrates through the corresponding adjusting screw hole, then a section of extending section horizontally extends outwards, and a handle is arranged at the outer end of the adjusting screw rod;
The lower end of the ejector rod is also provided with a section of yielding section at the position close to the abutting end, the length of the yielding section is greater than the depth of the threaded hole in the middle of the support arm, and the diameter of the yielding section is smaller than that of the external thread section on the ejector rod and is connected with the external thread section, so that the support arm can rotate and fall into the yielding section; the device also comprises a slide bar sleeve, the inner diameter of the slide bar sleeve is larger than the maximum outer diameter of the ejector rod, a heavy hammer is sleeved on the slide bar sleeve in a sliding way, a limiting round table for preventing the heavy hammer from sliding out is respectively arranged at the two ends of the slide bar sleeve, the two ends of the heavy hammer are respectively provided with a force application conduction block, and a circle of abdication groove which can contain the limiting round table is arranged in the outer end of the force application conduction block, which is away from the heavy hammer;
b, when the valve sleeve is disassembled, firstly, the connecting piece at the upper part of the valve body is disassembled and the upper end of the valve sleeve is exposed; the valve sleeve extracting tool of the blow-down valve is adopted, the pull claw arm is folded to be close to the ejector rod by rotating the adjusting screw rod, the ejector rod is rotated to adjust the position of the support arm, so that the distance from the abutting end of the ejector rod to the pull claw is consistent with the position of the valve sleeve slotting to the bottom of the valve body, which is measured in advance, and the abutting end of the ejector rod and the pull claw arm are downwards fed into the valve sleeve;
c, when the push rod abutting end contacts with the bottom of the valve body, the pull claw automatically aligns to the slotting position, and then the adjusting screw is rotated to enable the pull claw arm to be opened and the pull claw to be inserted into the corresponding slotting;
d, rotating the ejector rod to downwards abut against the lower side surface of the slotting, then keeping the pull claw arm to be motionless to rotate the ejector rod upwards until the support arm falls into the abdication section, limiting the support arm by the abutting seat to prevent the ejector rod from sliding out, and at the moment, no threaded fit exists between the ejector rod and the support arm;
e, sleeving the sliding rod sleeve outside the ejector rod, enabling a limit round table at one end of the sliding rod sleeve to be attached to the support arm, keeping the sliding rod sleeve in a vertical state, hammering the support arm from top to bottom by using a heavy hammer, and transmitting downward force of the heavy hammer to the sleeve through the support arm, so that the sleeve is loose relative to downward displacement of the valve body;
f, taking down the sliding rod sleeve, screwing the ejector rod into the support arm and screwing the ejector rod into the lower end abutting seat to fixedly abut against the bottom of the valve body below the valve sleeve mounting cavity; the adjusting screw is kept still by the handle, the ejector rod is continuously rotated downwards, and the valve sleeve is gradually driven to be steadily lifted out of the valve sleeve mounting cavity by means of threaded fit between the ejector rod and the support arm.
2. The valve housing disassembly and extraction method of the valve housing type blowdown valve housing of claim 1, wherein: the rotary force application end of the ejector rod is provided with a force application rod inserting hole which transversely penetrates through the ejector rod.
3. The valve housing disassembly and extraction method of the valve housing type blowdown valve housing of claim 2, wherein: the cross section of the rotary force application end of the ejector rod is a regular polygon with even sides.
4. The valve housing disassembly and extraction method of the valve housing type blowdown valve housing of claim 1, wherein: the upper surface of the pulling claw is provided with fine groove threads.
5. The valve housing disassembly and extraction method of the valve housing blowdown valve of claim 4, wherein: the two sides of the upper end of the pull claw arm are provided with upwards extending lugs which are arranged in bilateral symmetry, the lugs clamp the end part of the support arm into the lugs, the lugs are provided with hinge shaft holes, and the pull claw arm is hinged and installed on the support arm through a penetrating hinge shaft.
6. The valve housing disassembly and extraction method of the valve housing type blowdown valve housing of claim 1, wherein: the upper end of the pulling claw arm is close to the position of the support arm and is provided with an adjusting member in a horizontally and transversely outwards extending mode, and the adjusting screw hole is formed in the adjusting member.
7. The valve housing disassembly and extraction method of the valve housing type blowdown valve housing of claim 1, wherein: the extension section of the adjusting screw is also screwed with a locking nut.
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| CN201910209865.1A CN109848916B (en) | 2019-03-22 | 2019-03-22 | Blow-down valve sleeve extraction tool and valve sleeve disassembly and extraction method thereof |
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| CN201910209865.1A CN109848916B (en) | 2019-03-22 | 2019-03-22 | Blow-down valve sleeve extraction tool and valve sleeve disassembly and extraction method thereof |
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| CN109848916A CN109848916A (en) | 2019-06-07 |
| CN109848916B true CN109848916B (en) | 2024-04-23 |
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