CN210819344U - Plunger mounting tool for plunger pump - Google Patents
Plunger mounting tool for plunger pump Download PDFInfo
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- CN210819344U CN210819344U CN201921679417.XU CN201921679417U CN210819344U CN 210819344 U CN210819344 U CN 210819344U CN 201921679417 U CN201921679417 U CN 201921679417U CN 210819344 U CN210819344 U CN 210819344U
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Abstract
The utility model relates to a plunger mounting tool for plunger pump. The plunger mounting tool for the plunger pump comprises a cylinder body, wherein the lower part of the cylinder body is provided with a centering insertion section, the centering insertion section is used for being inserted into a step hole section of a cylinder sleeve in a centering mode, so that an orifice at the lower end of the cylinder body is aligned with an inner wall face, matched with a plunger ring, of the cylinder sleeve, the cylinder body is provided with a guide inner circumferential surface, and the guide inner circumferential surface is integrally of a truncated cone-shaped structure with the diameter size being large up and small down or is provided with a truncated cone. The cylinder body is inserted into the plunger mounting hole, the lower end hole opening of the cylinder body is aligned with the inner wall face, matched with the plunger ring, of the cylinder sleeve, the plunger with the plunger ring extends into the cylinder body, the plunger ring smoothly enters the cylinder sleeve after being extruded and contracted under the guiding action of the truncated cone-shaped structure or the truncated cone-shaped section, assembly of the plunger with the plunger ring and the cylinder sleeve is achieved, the process is simple and convenient to operate, time and labor are saved, and the situation that the plunger extends into the cylinder sleeve is avoided from scratching the shell of the plunger pump and the end face of the cylinder sleeve.
Description
Technical Field
The utility model relates to a plunger mounting tool for plunger pump.
Background
The liquid nitrogen pump truck is important equipment in petroleum and natural gas exploration and development, and a booster pump of a liquid nitrogen pump truck is conveyed to an evaporator after liquid nitrogen is sucked by a cold end of the liquid nitrogen pump truck. The cold end of the liquid nitrogen pump works in a low-temperature environment for a long time, and the requirements on cold fitting materials, assembly precision and the like are high.
The invention patent application with application publication number CN109404274A discloses a cold end of a low-temperature high-pressure plunger pump, the cold end comprises a cold end shell, a plunger and a cylinder sleeve, the plunger is arranged in the cylinder sleeve, the cylinder sleeve is positioned in the cold end shell, the cold end of the plunger pump is of a long and thin structure, the cylinder sleeve is positioned in the middle of the cold end shell, a plurality of plunger rings are arranged on the plunger, and the outer diameter of each plunger ring is slightly larger than the inner diameter of the cylinder sleeve.
Plunger ring belongs to the vulnerable part, and it is higher to need regular maintenance and change frequency, and the back is accomplished in the plunger maintenance, at the in-process of equipment, need pack into the cylinder liner with the plunger of plunger ring in, just can get into the cylinder liner because the plunger ring contracts after, the plunger pump cold junction is long and thin structure moreover, and the cylinder liner is located the intermediate position of cold junction casing for the operation that the cylinder liner was packed into to the plunger is comparatively complicated. The plunger is sent into the cylinder sleeve by the following two modes: one is to use a flat-head screwdriver, the head part of the flat-head screwdriver is used for extruding a plunger ring to deform the plunger ring, and then the plunger with the plunger ring is sent into a cylinder sleeve; the other method is to wrap the paper with the adhesive tape outside a plunger with a plunger ring to compress and deform the plunger ring, then send the plunger into a cylinder sleeve, and finally pull out the paper with the adhesive tape. However, in the mode of using the flat-head screwdriver, the plunger ring and the plunger are easily damaged in the process that the head of the flat-head screwdriver extrudes the plunger ring, so that the normal use of the plunger pump is influenced; in the mode of using the paper wrapped with the adhesive tape, residual paper scraps are easy to remain in the cylinder sleeve in the process of drawing the paper out, and the normal operation of the plunger pump is further influenced.
The normal work of plunger pump is all influenced easily to the mode of above-mentioned two kinds of installation plungers, does not have specialized tool in these two kinds of modes moreover, and the assembly process is wasted time and energy, very inconvenient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a plunger mounting tool for plunger pump for solve the technical problem that the operation of packing into the cylinder liner with the plunger of plunger ring is comparatively complicated, very inconvenient among the prior art.
In order to achieve the above object, the utility model discloses plunger mounting tool for plunger pump's technical scheme is: the plunger mounting tool for the plunger pump comprises a cylinder body which is inserted into a corresponding plunger mounting hole of a plunger pump shell in a pluggable mode, wherein a centering insertion section is arranged at the lower portion of the cylinder body and is used for being inserted into a step hole section at the corresponding end of a cylinder sleeve in a pluggable mode, so that an opening at the lower end of the cylinder body is aligned with the inner wall face matched with a plunger ring on the cylinder sleeve, the cylinder body is provided with a guiding inner peripheral surface, the guiding inner peripheral surface is used for guiding the plunger ring to enter the cylinder sleeve through the opening at the lower end of the cylinder body, and the guiding inner peripheral surface is integrally of a truncated cone structure with the size larger in the upper portion and the smaller in the lower portion or is provided with a.
The utility model has the advantages that: the cylinder body is inserted into the plunger mounting hole, so that the centering insertion section of the cylinder body is in centering insertion with the step hole section of the cylinder sleeve, so that the orifice at the lower end of the cylinder body is aligned with the inner wall surface of the cylinder sleeve matched with the plunger ring, the plunger extends into the cylinder body along the guiding inner circumferential surface of the cylinder body, in the process, the plunger ring on the plunger is compressed by the frustum-shaped structure or the frustum-shaped section until the plunger ring completely enters the barrel, and enters the cylinder sleeve along the orifice at the lower end of the cylinder body to ensure that the plunger ring is correspondingly matched with the inner wall surface on the cylinder sleeve, then the cylinder body is taken out from the plunger mounting hole, in the mode of using the cylinder body to mount the plunger, only the inner circumferential surface of the cylinder body is used for guiding to extrude the plunger ring by the cylinder body, and other tools are not used, the assembling process is simple and convenient, time and labor are saved, and the cylinder sleeve or the plunger pump shell can be prevented from being scratched in the assembling process of the plunger.
Further, the guiding inner circumferential surface is provided with a cylindrical section positioned at the lower part of the cylinder body, the upper end of the cylindrical section is in transition connection with the lower end of the truncated cone section, and the lower end of the cylindrical section forms a lower end hole of the cylinder body. The arrangement of the cylindrical section structure facilitates the alignment arrangement of the lower end of the cylindrical section and the inner wall surface, matched with the plunger ring, on the cylinder sleeve, the alignment arrangement of the orifice at the lower end of the barrel and the inner wall surface, matched with the plunger ring, on the cylinder sleeve can be realized, and the smooth and clamping-stagnation-free assembling process of the plunger and the cylinder sleeve can be ensured.
Further, the size of the centering insertion section in the axial direction of the cylinder body is larger than the axial size of the step hole section on the cylinder sleeve. The cylinder body with the structural size ensures that the lower end face of the cylinder body is in stop fit with the step face on the cylinder sleeve after the cylinder body and the cylinder sleeve are inserted in a centering way, so that the influence on the installation of the plunger with the plunger ring caused by a gap at the contact position of the lower end face of the cylinder body and the cylinder sleeve can be avoided.
Furthermore, the barrel body is movably sleeved with a squeezing ring, the squeezing ring is used for supporting and jacking the opening of the plunger mounting hole, the lower part of the squeezing ring is provided with jacking parts extending or distributed along the circumferential direction, and the jacking parts extend downwards to be squeezed between the hole wall of the plunger mounting hole and the barrel body so as to fix the barrel body in the plunger pump shell. Be provided with plunger mounting tool for plunger pump of crowded tight ring, the accessible is crowded into between plunger pump shell and the barrel with the roof pressure portion of crowded tight ring, remedies the manufacturing error of barrel to fix the barrel in plunger pump shell, avoid the barrel to move in the barrel footpath relative cylinder liner and plunger pump shell.
Further, the radial dimension of the outer peripheral surface of the pressing portion extending in the circumferential direction is gradually reduced from top to bottom. The top pressure portion circumference atress that circumference extension was arranged is even, and the radial dimension of the outer peripheral face of top pressure portion from top to bottom reduces gradually, and the lower part of the top pressure portion of being convenient for squeezes into between plunger pump casing and the barrel, and the position of convenient fixed barrel reduces because barrel preparation error makes the radial play volume that the relative cylinder liner of barrel produced.
Further, the radial cross section of the outer peripheral surface of the pressing portion is arc-shaped, so that the radial dimension of the outer peripheral surface of the pressing portion is gradually reduced from top to bottom. The radial cross section of the outer peripheral surface of the jacking portion is arc-shaped, so that more jacking portions can enter a gap between the cylinder body and the plunger pump shell, the position of the cylinder body relative to the cylinder sleeve can be fixed, and the circumferential movement amount of the cylinder body relative to the cylinder sleeve can be further reduced.
Further, the tight-squeezing ring is a rubber ring. The tight ring of crowded tight ring is the rubber circle, and the rubber circle receives extrusion deformation, and the area of contact of the crowded tight ring of multiplicable and crowded tight ring and barrel and crowded tight ring and the drill way of plunger mounting hole, reducible crowded tight ring is to the outer peripheral face of barrel and to the wearing and tearing of plunger pump casing, avoids the rigid contact between crowded tight ring and barrel and crowded tight ring and the plunger pump casing.
Furthermore, the tight ring has the face of cylinder that is used for with the outer peripheral face of barrel closely cooperates. The cylindrical surface of the tight-squeezing ring is tightly attached to the peripheral surface of the barrel, so that the friction force between the tight-squeezing ring and the barrel can be increased, and the fixation of the tight-squeezing ring to the position of the barrel can be strengthened.
Further, the upper end of the barrel has an out-turned flange extending circumferentially of the barrel. The outward-turning flange is convenient for an operator to hold and is also convenient for arranging a lifting handle on the outward-turning flange.
Furthermore, a lifting handle for an operator to hold is fixedly arranged on the eversion flange. The outward-turning flange is provided with a lifting handle for an operator to hold, so that the operation of the operator is facilitated.
Drawings
Fig. 1 is a schematic structural view of a plunger mounting tool for a plunger pump according to an embodiment 1 of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 1 in use;
FIG. 4 is an enlarged view taken at A in FIG. 3;
in the figure: 1-cold end housing section;
2-cylinder sleeve;
3-a cylinder body;
4-centering the splicing section;
6-a frustoconical section;
7-a cylindrical section;
8-inner wall surface;
9-squeezing the ring;
10-outer peripheral surface;
11-everting the flange;
12-lifting and placing a handle;
13-a support portion;
14-a handle portion;
15-jacking and pressing part.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses an embodiment 1 of plunger mounting tool for plunger pump:
before describing the structure of the plunger mounting tool for the plunger pump in the present embodiment, the structure of the plunger pump will be described.
As shown in fig. 3, the plunger pump is specifically a liquid plunger pump, and in this embodiment, the plunger pump is a liquid nitrogen plunger pump.
As shown in fig. 3, this liquid nitrogen plunger pump includes the plunger pump casing, and the plunger pump casing includes liquid nitrogen plunger pump's cold junction casing part 1, and cold junction casing part 1 has the cylinder inner peripheral surface, is provided with cylinder liner 2 in the cold junction casing part 1, and cold junction casing part 1 is long and thin structure, and the plunger mounting hole that is used for inserting the plunger is seted up to cold junction casing part 1's upper end. The cylinder sleeve 2 is located in the middle of the cold end shell part 1, the cylinder sleeve 2 is of a generally tubular structure, the tubular structure is provided with a through hole for assembling a plunger, the through hole comprises a small-diameter hole section and a large-diameter hole section, a step surface is arranged between the small-diameter hole section and the large-diameter hole section, and the inner wall surface 8 of the small-diameter hole section is used for being in sealing fit with a plunger ring (not shown) on the plunger (not shown); the large diameter bore section is located at the upper end of the cylinder liner 2 forming a stepped bore section of the cylinder liner 2 for cooperation with a valve seat (not shown) in the cold end housing portion 1.
In the process of installing the plunger, the plunger with the plunger ring is required to be inserted into the plunger installation hole and then enter the small-diameter hole section of the cylinder sleeve 2, and the inner wall surface 8 of the small-diameter hole section is in sealing fit with the outer peripheral surface of the plunger ring.
The plunger installation tool for the plunger pump in the embodiment, as shown in fig. 1 to 3, includes a barrel 3, the barrel 3 has an inner hole extending up and down along an axial direction of the barrel, the barrel 3 can be used to be inserted into a plunger installation hole, a centering insertion section 4 is provided at a lower part of the barrel 3, the centering insertion section 4 is used to be inserted into a step hole section of a cylinder sleeve 2 in a centering manner, so that an orifice at a lower end of the barrel is aligned with an inner wall surface of the cylinder sleeve 2, which is matched with a plunger ring.
The inner bore peripheral surface of the cylinder 3 is a guide inner peripheral surface for guiding the plunger with the plunger ring to be fitted into the cylinder liner 2. The guiding inner peripheral surface is provided with a truncated cone-shaped section 6 with the diameter size being large at the top and small at the bottom, and the diameter size of the upper end of the guiding inner peripheral surface is largest, so that the plunger ring is extruded under the guiding action of the truncated cone-shaped section 6 in the process that the plunger sleeved with the plunger ring is assembled in the cylinder sleeve 2 along the upper end of the cylinder 3, and the plunger ring is ensured to smoothly enter the cylinder 3 after being extruded and contracted.
In this embodiment, the guiding inner circumferential surface further has a cylindrical section 7 located below the truncated cone section 6, the upper end of the cylindrical section 7 is in smooth transition connection with the lower end of the truncated cone section 6, the lower end of the cylindrical section 7 forms a lower end orifice of the cylinder, after the cylinder 3 and the cylinder liner 2 are aligned and inserted in place, the lower end of the cylindrical section 7 is aligned with the inner wall surface 8 of the small-diameter hole section, the lower end orifice of the cylinder is aligned with the inner wall surface 8 of the small-diameter hole section on the cylinder liner 2, and therefore it is ensured that the plunger with the plunger ring smoothly enters the small-diameter hole section of the cylinder liner 2 from the cylinder 3, and the plunger ring is attached to.
In this embodiment, as shown in fig. 3, the outer peripheral surface of the centering insertion section 4 is a cylindrical surface, which facilitates the insertion and fitting of the barrel 3 and the plunger mounting hole, and the radial dimension of the outer peripheral surface of the centering insertion section 4 is smaller than the radial dimension of the outer peripheral surface of the upper portion of the barrel 3, so that a step is formed at the upper end of the centering insertion section 4 on the barrel 3, which facilitates the insertion and fitting of the centering insertion section 4 and the step hole section; the radial dimension of the outer peripheral surface of the centering insertion section 4 is slightly smaller than the inner diameter dimension of the step hole section, so that the centering insertion section 4 and the step hole section are favorably and smoothly inserted, the radial dimension of the outer peripheral surface of the upper part of the cylinder body 3 is slightly smaller than the radial dimension of the outer peripheral surface of the cylinder sleeve 2, the upper part of the cylinder body 3 and the cold end shell part 1 are favorably and smoothly inserted, and the centering insertion of the cylinder body 3 and the cylinder sleeve 2 is realized.
In this embodiment, as shown in fig. 3, the length of the centering insertion section 4 in the axial direction of the cylinder 3 is greater than the length of the step hole section of the cylinder sleeve 2 in the axial direction of the cylinder sleeve 2, so as to ensure that the lower end surface of the centering insertion section 4 is in stop fit with the step surface on the cylinder sleeve 2 after the cylinder 3 and the cylinder sleeve 2 are inserted in place, and thus a gap is prevented from being left between the lower end surface of the centering insertion section 4 and the step surface of the cylinder sleeve 2, and the plunger with the plunger ring is prevented from being jammed during the assembly process.
In the embodiment, in the using process of the plunger mounting tool, the cylinder 3 is inserted into the plunger mounting hole, so that the lower end surface of the centering insertion section 4 is in stop fit with the step surface on the cylinder sleeve 2, the cylinder 3 and the cylinder sleeve 2 are ensured to be centered and inserted in place, and the cylindrical section and the inner wall surface 8 of the small-diameter hole section of the cylinder sleeve 2 are aligned; in-process at the assembly plunger, the plunger that will have the plunger ring stretches into in the barrel, in this process, the plunger ring is under the guide extrusion effect of truncated cone section 6, get into in the cylinder section of barrel 3 smoothly, and along the cooperation department of cylinder section and path hole section, get into in the path hole section of cylinder liner 2, finally make the plunger ring laminate mutually with the internal wall 8 of path hole section, realize the assembly of plunger and cylinder liner 2 that has the plunger ring, this process operation is simple and convenient, time saving and labor saving, can avoid the plunger to directly stretch into the in-process fish tail cold junction casing part 1 and the cylinder liner 2 terminal surface of cylinder liner 2.
In the plunger mounting tool for the plunger pump, as shown in fig. 1 and 4, a tight-squeezing ring 9 is movably sleeved on the outer peripheral surface of a barrel 3, the tight-squeezing ring 9 is fitted with the outer peripheral surface of the upper part of the barrel 3, the tight-squeezing ring 9 is provided with a pressing part 15 extending along the circumferential direction of the tight-squeezing ring 9, the pressing part 15 extends downwards, the pressing part 15 is provided with an outer peripheral surface 10, and the radial dimension of the outer peripheral surface 10 is gradually reduced from top to bottom.
After barrel 3 and cylinder liner 2 peg graft in place, because the peripheral face of the centering grafting section 4 of barrel 3 has machining error, although insert centering grafting section 4 in the step hole section of cylinder liner 2, the adaptation nature of barrel 3 and cylinder liner 2 can be reduced to the radial clearance between the centering grafting section 4 of cylinder liner 2 and barrel 3, reduces the alignment precision of interior wall face 8 on cylinder section and the cylinder liner 2. At this moment, the position of the cylinder 3 needs to be manually adjusted along the radial direction of the cylinder 3 until the visual cylindrical section is aligned with the inner wall surface 8 of the cylinder sleeve 2, and then the pressing ring 9 is pressed downwards, so that the pressing ring 9 supports and presses the orifice of the plunger mounting hole, as shown in fig. 4, the pressing part 15 is pressed into a gap between the cold end shell part 1 and the cylinder 3, and then the cylinder 3 is fixed in the cold end shell part 1, thereby ensuring the centering and positioning of the cylinder 3 and the cold end shell part 1, compensating the manufacturing error of the cylinder 3, and limiting the play of the cylinder 3 in the radial direction.
Correspondingly, after the plunger assembly is completed, the tight-extruding ring 9 is pulled out from the gap between the cold-end shell part 1 and the barrel 3 by moving the tight-extruding ring 9 upwards, and then the barrel 3 is lifted upwards so as to conveniently take the barrel 3 out of the cold-end shell part 1.
In this embodiment, as shown in fig. 1, the outer peripheral surface 10 extends along the circumferential direction of the tightening ring 9, so that the tightening ring 9 is uniformly stressed in the circumferential direction, and the radial dimension of the outer peripheral surface 10 is gradually reduced from top to bottom, so that the lower portion of the pressing portion 15 is pressed into the gap between the cold end housing portion 1 and the cylinder 3. Specifically, as shown in fig. 1, the radial cross section of the upper peripheral surface 10 of the pressing portion 15 is arc-shaped, so that more pressing portions 15 can extend into the gap between the cylinder 3 and the cold end housing portion 1, which is helpful for fixing the position of the cylinder 3 relative to the cylinder sleeve 2, and further reduces the radial movement amount generated by the cylinder 3 relative to the cylinder sleeve 2 due to the manufacturing error of the cylinder 3.
In this embodiment, as shown in fig. 1, the tightening ring 9 is a rubber ring, and the rubber ring is deformed by extrusion, so that the contact area between the tightening ring 9 and the cylinder 3 and between the tightening ring 9 and the cold end housing part 1 can be increased, the wear of the tightening ring 9 to the outer peripheral surface of the cylinder 3 and to the cold end housing part 1 can be reduced, and the rigid contact between the tightening ring 9 and the cylinder 3 and between the tightening ring 9 and the cold end housing part 1 can be avoided.
As shown in fig. 1 and 4, the tightening ring 9 has a cylindrical surface for closely fitting with the outer peripheral surface of the upper portion of the barrel 3, and the cylindrical surface of the tightening ring 9 is closely sleeved on the outer peripheral surface of the upper portion of the barrel 3, so that the pressing force between the tightening ring 9 and the barrel 3 can be increased, the friction between the tightening ring 9 and the barrel 3 can be increased, and the fixation of the tightening ring 9 to the position of the barrel 3 can be enhanced.
In the embodiment, as shown in fig. 1 to 3, the barrel 3 has an outward-turning flange 11 extending along the circumference of the barrel 3 at the upper end thereof, a carrying handle 12 for an operator to hold is further provided on the outward-turning flange 11, the carrying handle 12 includes a handle portion 14 and a support portion 13 extending along the axial direction of the barrel 3, the handle portion 14 is connected to the upper end of the support portion 13 and extends towards the outside of the barrel 3, and the carrying handle 12 is provided to facilitate the operator to hold the carrying handle 12, so as to carry and place the barrel 3 in the cold-end housing portion 1.
The plunger mounting tool for the plunger pump is simple in use process, convenient to operate and convenient for assembling the plunger and the cylinder sleeve, and can not abrade the cold end shell part and the upper end surface of the cylinder sleeve and damage other parts on the plunger pump in the assembling process.
The utility model discloses an embodiment 2 of plunger mounting tool for plunger pump:
it differs from example 1 in that: the guide inner circumferential surface of the cylinder is not provided with a cylindrical section, the guide inner circumferential surface is integrally of a truncated cone-shaped structure, the lower end of the truncated cone-shaped structure forms a lower end orifice of the cylinder, the lower end of the truncated cone-shaped structure is aligned with the inner wall surface of the small-diameter hole section, the alignment arrangement of the lower end orifice of the cylinder and the inner wall surface of the small-diameter hole section is realized, and the guide inner circumferential surface of the structure can ensure that the plunger with the plunger ring smoothly enters the small-diameter hole section of the cylinder sleeve from the cylinder under the guide effect of the truncated cone-shaped structure, so that the plunger ring.
The utility model discloses an embodiment 3 of plunger mounting tool for plunger pump:
it differs from example 1 in that: under the condition that the manufacturing precision of the cylinder body is high, the length of the centering insertion section in the axial direction of the cylinder body is equal to the length of the step hole section of the cylinder sleeve in the axial direction of the cylinder sleeve, so that after the centering insertion section and the step hole section are inserted in place, the lower end face of the centering insertion section is in stop fit with the step face on the cylinder sleeve, and the phenomenon that a plunger with a plunger ring is clamped in the assembling process due to a gap between the lower end face of the centering insertion section and the step face of the cylinder sleeve is avoided.
The utility model discloses an embodiment 4 of plunger mounting tool for plunger pump:
it differs from example 1 in that: under the condition that the manufacturing precision of the cylinder is high, the size of the cylinder meets the requirement that the centering insertion section is matched and inserted with the step hole section of the cylinder sleeve or the size of the cylinder meets the requirement that the upper part of the cylinder is matched and inserted with the inner circumferential surface of the cold end shell, after the centering insertion section is inserted in place with the step hole section, the position of the cylinder is fixed by utilizing the mutual blocking relation between the inner circumferential surface of the step hole section and the outer circumferential surface of the centering insertion section, the cylinder is limited to move, the cylindrical section of the guiding inner circumferential surface of the cylinder is flush with the inner wall surface of the cylinder sleeve, the cylinder is prevented from radially jumping in the plunger mounting hole of the cold end shell, and at the.
The utility model discloses an embodiment 5 of plunger mounting tool for plunger pump:
it differs from example 1 in that: the radial dimension of the outer peripheral surface of the top pressing portion in the up-down direction is equal, after the cylinder body and the cylinder sleeve are inserted in place and the inner wall surface of the cylinder sleeve is aligned, the lower portion of the top pressing portion can be pressed into a gap between the cold end shell portion and the cylinder body through manual extrusion so as to fix the cylinder body in the cold end shell portion and guarantee centering and positioning of the cylinder body.
The utility model discloses an embodiment 6 of plunger mounting tool for plunger pump:
it differs from example 1 in that: the outer peripheral surface of the top pressing portion is arranged at intervals along the circumferential direction of the squeezing ring, and the top pressing portion arranged by the structure can also enable the lower portion of the top pressing portion to extend into an assembly gap between the barrel and the cold end shell portion, so that the squeezing ring supports and presses the hole opening of the plunger mounting hole, the position of the barrel in the cold end shell portion is further fixed, the centering and the positioning of the barrel are guaranteed, and the manufacturing error of the barrel is made up.
The utility model discloses an embodiment 7 of plunger mounting tool for plunger pump:
it differs from example 1 in that: the radial dimension of the outer peripheral face of top splenium from top to bottom reduces gradually, and the radial cross section of the outer peripheral face of top splenium is sharp form, and the outer peripheral face is straight face promptly, and the top splenium that this kind of straight face set up also can be in the barrel and the cylinder liner is pegged graft the back of targetting in place, makes partial top splenium stretch into in the gap between barrel and the cold junction casing part, reduces the radial motion volume that the relative cylinder liner of barrel produced.
The utility model discloses an embodiment 8 of plunger mounting tool for plunger pump:
it differs from example 1 in that: the tight ring of crowded is made by other flexible materials such as cloth or skin, and for rigid material, flexible material is softer, receives the extrusion and has certain deformation volume, reducible wearing and tearing to barrel peripheral face and cold junction casing part tip.
The utility model discloses an embodiment 9 of plunger mounting tool for plunger pump:
it differs from example 1 in that: the inner peripheral surface of the tight ring is an arc surface protruding towards the center of the tight ring or an arc surface protruding away from the center of the tight ring, the tight ring is sleeved on the upper portion of the barrel body, the tight ring is attached to the outer peripheral surface of the upper portion of the barrel body after being deformed, and the tight ring is assembled between the barrel body and the cold end shell body, so that the fixation of the tight ring to the position of the barrel body is facilitated.
The utility model discloses an embodiment 10 of plunger mounting tool for plunger pump:
it differs from example 1 in that: the outward-turning flange of the cylinder body is not provided with a handle, so that an operator can hold the outward-turning flange by hands to lift and put the cylinder body; or the outward-turned flange of the cylinder body is not provided with a handle, the upper cylinder wall of the cylinder body is provided with an insertion hole for an operator to insert, and the operator can also lift and put the cylinder body when the operator inserts the hand into the insertion hole.
Claims (10)
1. The utility model provides a plunger mounting tool for plunger pump which characterized in that:
comprises a cylinder body which is used for being inserted into a corresponding plunger mounting hole of a plunger pump shell in a pluggable way,
the lower part of the cylinder body is provided with a centering insertion section which is used for centering insertion with a step hole section at the corresponding end of the cylinder sleeve so as to lead the orifice at the lower end of the cylinder body to be aligned with the inner wall surface matched with the plunger ring on the cylinder sleeve,
the cylinder body is provided with a guiding inner circumferential surface which is used for guiding the plunger ring to enter the cylinder sleeve through the lower end opening of the cylinder body,
the guide inner peripheral surface is integrally of a frustoconical structure or has a frustoconical section with a larger diameter dimension and a smaller diameter dimension to compress the plunger ring when the plunger ring is guided downward.
2. The plunger installation tool for a plunger pump according to claim 1, wherein: the guide inner circumferential surface is provided with a cylindrical section positioned at the lower part of the cylinder body, the upper end of the cylindrical section is in transition connection with the lower end of the truncated cone section, and the lower end of the cylindrical section forms a lower end hole of the cylinder body.
3. The plunger installation tool for a plunger pump according to claim 1, wherein: the size of the centering insertion section in the axial direction of the cylinder body is larger than the axial size of the step hole section on the cylinder sleeve.
4. The plunger installation tool for a plunger pump according to any one of claims 1 to 3, wherein: the barrel is movably sleeved with a compaction ring, the compaction ring is used for supporting and jacking the orifice of the plunger mounting hole, the lower part of the compaction ring is provided with jacking parts extending or distributed along the circumferential direction, and the jacking parts extend downwards to be used for being squeezed between the hole wall of the plunger mounting hole and the barrel so as to fix the barrel in a plunger pump shell.
5. The plunger installation tool for a plunger pump according to claim 4, wherein: the radial dimension of the peripheral surface of the jacking portion extending along the circumferential direction is gradually reduced from top to bottom.
6. The plunger installation tool for a plunger pump according to claim 5, wherein: the radial cross section of the outer peripheral surface of the top pressing portion is arc-shaped, so that the radial size of the outer peripheral surface of the top pressing portion is gradually reduced from top to bottom.
7. The plunger installation tool for a plunger pump according to claim 4, wherein: the squeezing ring is a rubber ring.
8. The plunger installation tool for a plunger pump according to claim 4, wherein: the tight-squeezing ring is provided with a cylindrical surface which is used for being closely matched with the peripheral surface of the cylinder body.
9. The plunger installation tool for a plunger pump according to any one of claims 1 to 3, wherein: the upper end of the barrel has an out-turned flange extending circumferentially of the barrel.
10. The plunger installation tool for a plunger pump according to claim 9, wherein: and a lifting handle for an operator to hold is fixedly arranged on the eversion flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921679417.XU CN210819344U (en) | 2019-10-09 | 2019-10-09 | Plunger mounting tool for plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921679417.XU CN210819344U (en) | 2019-10-09 | 2019-10-09 | Plunger mounting tool for plunger pump |
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| Publication Number | Publication Date |
|---|---|
| CN210819344U true CN210819344U (en) | 2020-06-23 |
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| CN201921679417.XU Active CN210819344U (en) | 2019-10-09 | 2019-10-09 | Plunger mounting tool for plunger pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227195A (en) * | 2021-12-24 | 2022-03-25 | 余姚鑫仕达汽车部件有限公司 | Plunger pump leather cup mounting device and using method thereof |
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2019
- 2019-10-09 CN CN201921679417.XU patent/CN210819344U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227195A (en) * | 2021-12-24 | 2022-03-25 | 余姚鑫仕达汽车部件有限公司 | Plunger pump leather cup mounting device and using method thereof |
| CN114227195B (en) * | 2021-12-24 | 2024-04-02 | 余姚鑫仕达汽车部件有限公司 | Plunger pump leather cup mounting device and use method thereof |
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