CN201412318Y - Plunger pump packing box leak-free return flow type sealing device - Google Patents
Plunger pump packing box leak-free return flow type sealing device Download PDFInfo
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- CN201412318Y CN201412318Y CN2009201276437U CN200920127643U CN201412318Y CN 201412318 Y CN201412318 Y CN 201412318Y CN 2009201276437 U CN2009201276437 U CN 2009201276437U CN 200920127643 U CN200920127643 U CN 200920127643U CN 201412318 Y CN201412318 Y CN 201412318Y
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- 238000012856 packing Methods 0.000 title claims abstract description 74
- 238000007789 sealing Methods 0.000 title claims abstract description 25
- 210000004907 gland Anatomy 0.000 claims abstract description 83
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims description 116
- 238000009825 accumulation Methods 0.000 claims description 23
- 238000005213 imbibition Methods 0.000 claims description 17
- 230000013011 mating Effects 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 4
- 238000004512 die casting Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 208000004141 microcephaly Diseases 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 7
- 230000006837 decompression Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000003912 environmental pollution Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 241000521257 Hydrops Species 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
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- 230000007797 corrosion Effects 0.000 description 2
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- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
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Abstract
The utility model discloses a plunger pump packing box leak-free return flow type sealing device, which comprises a back-leak pipeline, a pump component, first stage packing material, second stage packing material, a packing material gland, an intermediate leaking liquid collecting cavity and a back-leak pipeline, wherein the outside of a packing box body is matched with a pump bracket, the pump component in the front portion of the pump bracket is fixed on the front wall body of the pump bracket by bolts, a convex shoulder on the front end of the packing box body is located between the pump bracket and the pump component, a sealing element arranged between the adjoining planes of the convex shoulder of the packing box body and the pump component is located outside a plunger of a plunger pump. Compared with the prior art, the plunger pump packing box leak-free return flow type sealing device has the beneficial effects that the first stage packing material and the second stage packing material are independently compressed, the outer secondary sealing does not leak, the eccentric wear between the plunger and the packing material is small, the decompression space is large, the decompression effect is excellent, the back-leak of circular multi-channel does not be blocked, an external back-leak pipeline is omitted, and the sealing device has compact structure, non lead hidden dangers and environment pollution, reliable sealing performance and long service life.
Description
Technical field
The utility model relates to a kind of seal arrangement of reciprocating volumetric pump, particularly a kind of plunger pump Stuffing box non-leakage reversed flow type seal arrangement.
Background technique
Plunger pump is when fed sheet of a media, plunger and stuffing box packing friction easily cause heating and wearing and tearing, need to be lubricated with liquid medium, and the Lubricants of plunger pump is exactly to be transferred medium itself by what the pressure active chamber provided, therefore, there is the problem of leakage inevitably in plunger pump.Now, because environmental protection consciousness is more and more stronger, also more and more higher to the nothing leakage requirement of equipment.On the leakage problem that solves plunger pump, except that improvement to the stuffing box packing material, also sealing configuration has been carried out continuous perfect, as adopt outer circulation return drain formation, seal cage assemble return after the leakage leak, double seal intermediate section dropping liquid draws the back and regularly concentrates modes such as recovery, more than because to be subjected to structural limitations to return small opening less, return the sealing material chip precipitation of leaking in the medium and cause back that small opening stops up, influence back and leak effect, cause the external sealed leakage rate to increase gradually, can not really play the effect that reduces to leak; Simultaneously, outer circulation is returned and is Lou had baroque problem, and there was loaded down with trivial details problem in regularly concentrated reclaimer operation after time leakage caused environmental pollution problems, double seal intermediate section dropping liquid to draw easily after the seal cage gathering leakage.In addition, existing plunger pump Stuffing box is to be connected on the pump housing parts by pressing plate and screw, pressing plate cooperates with the seam of the preceding body of wall of pump bracket, pump housing parts are connected on the pump bracket by bolt, because the body of wall width is narrower, the quality of fit of pressing plate and preceding body of wall seam is lower, so the coaxality of the plunger of plunger pump and transmission case link is poor, cause plunger and stuffing box packing eccentric wear, cause leakage aggravation and plunger pump life-span low.Chinese patent publication number CN1414245, open April 30 2003 date, invention and created name " reciprocating pump reduced pressure sealing gland seal device ", a kind of gland sealed reciprocating pump reduced pressure sealing gland seal device that is used to replace is disclosed, solved the wear problem of packing seal mode, but pump is in the discharge opeing process, the higher plunger pump of pressure particularly, the liquid that high-pressure working chamber leaks relatively largely directly enters decompression chamber, though leakage through the decompression but still have elevated pressures, and the sealing configuration in the decompression chamber outside is simple, so the problem that still exists hydrops to leak.Chinese patent publication number CN101225805, open July 23 2008 date, invention and created name " non-leakage reversed flow type plunger pump ", the hydrops external pipeline returns the leakage Stuffing box non-leakage reversed flow type plunger pump of mode in the middle of disclosing a kind of the employing, sealing means to the plunger pump Stuffing box compares effective improvement, but still the plunger that exists inside and outside stuffing box packing to adopt same follower to compress to be brought and the problem of stuffing box packing serious wear, simultaneously, also exist the complicated and external connector of form structure to become flexible and cause the hidden danger of leakage.
Summary of the invention
The purpose of this utility model is exactly at the deficiencies in the prior art, provide a kind of intermediate relief leakage collection chamber volume big, inside and outside stuffing box packing compresses separately, do not have take back that fistulae road, compact structure, sealability are reliable outward, the eccentric wear between plunger and stuffing box packing is little, the plunger pump Stuffing box seal arrangement of long service life and non-environmental-pollution.
For achieving the above object, the utility model adopts following technological scheme:
A kind of plunger pump Stuffing box non-leakage reversed flow type seal arrangement, comprise go back to the fistulae road, pump housing parts, pump housing parts are provided with the pump housing, imbibition chamber and active chamber, be provided with one-way valve between imbibition chamber and the active chamber, the plunger of plunger pump is slidingly fitted in the hole of pump housing sidewall, the front end of plunger is arranged in active chamber, the rear end of plunger is passed the filler casing and is connected with the transmission part of plunger pump, be provided with the chopped-off head stuffing box packing in the filler casing, the secondary seal filler, Gland, middle leakage accumulation chamber, middle leakage accumulation chamber is between chopped-off head stuffing box packing and secondary seal filler, chopped-off head stuffing box packing and secondary seal filler surround and are slidingly fitted in the plunger outside, the two ends of going back to the fistulae road are communicated with imbibition chamber and middle leakage accumulation chamber respectively, described Stuffing box external body is combined with pump bracket, the pump housing parts in pump bracket the place ahead are connected on the preceding body of wall of pump bracket by bolt, the front end of filler casing is provided with convex shoulder, convex shoulder is between pump bracket and pump housing parts, the preceding body of wall of pump bracket is exposed in the rear end of filler casing, be provided with seal element between the mating face of filler casing convex shoulder and pump housing parts, seal element is positioned at the plunger outside.
The front end body of wall that cooperates of filler casing and pump bracket can be any one of interference fit, transition fit and Spielpassung, but for ease of the installation, maintenance convenient disassembly with guarantee enough quality of fits, usually adopt transition or Spielpassung, and less employing interference fit
After adopting as above technological scheme, Stuffing box directly is engaged in the pump bracket front end body of wall, so the good rigidly of Stuffing box, compact structure, the guiding crosshead coaxality of the plunger of plunger pump and transmission case is good, and the eccentric wear of plunger and stuffing box packing is little, good seal performance, the long service life of plunger pump; Seal element between the mating face of convex shoulder and pump housing parts guarantees that the convex shoulder of filler casing and the mating face of pump housing parts do not have leakage.
Preferably, the filler box house is provided with the ladder cylindrical hole, and the ladder cylindrical hole is made of front end through hole, leading portion endoporus, rear end macropore, is formed with interior step between front end through hole and the leading portion endoporus, and the diameter of front end through hole is greater than plunger diameter; Described Gland is made up of chopped-off head Gland and secondary Gland, the chopped-off head Gland is slidingly fitted in the rear end macropore of filler casing by cylindrical, between the fitting surface of chopped-off head Gland and rear end macropore, be provided with the O RunddichtringO, the O RunddichtringO is arranged in the seal ring ring groove shape groove at chopped-off head Gland middle part, the front end of chopped-off head Gland is provided with boss and bottom through-hole, the diameter of boss is less than the leading portion diameter of bore of filler casing, bottom through-hole axially runs through boss, the diameter of bottom through-hole is greater than plunger diameter, the chopped-off head stuffing box packing is located in the leading portion endoporus of filler casing, and between the interior step of the front-end face of chopped-off head Gland boss and filler casing leading portion endoporus, the rear of chopped-off head Gland is provided with the nut gland, the nut gland is connected by the rear end microcephaly that screw thread and filler casing are provided with screw thread, the inside of chopped-off head Gland is provided with secondary stuffing hole, secondary stuffing hole and bottom through-hole form interior step, the chopped-off head Gland is connected with secondary Gland by the tapped hole that secondary stuffing hole rear end is provided with, the diameter of bore of secondary Gland is greater than plunger diameter, the secondary seal filler is located in the secondary stuffing hole of chopped-off head Gland, and between the interior step of the front-end face of secondary Gland and secondary stuffing hole; The leakage accumulation chamber is made up of toroidal cavity, annular groove, through hole in the middle of described, toroidal cavity is looped around the boss outside of chopped-off head Gland, be to surround formed annular space by the front end hole wall of chopped-off head stuffing box packing, filler box back macropore, the boss of chopped-off head Gland front end, annular groove is that the bottom through-hole hole wall by plunger, chopped-off head stuffing box packing, secondary seal filler, chopped-off head Gland surrounds formed annular space, through hole is arranged on the sidewall of chopped-off head Gland front end boss, and the two ends of through hole are communicated with toroidal cavity and annular groove respectively.Because chopped-off head, secondary seal filler are implemented to compress separately, when secondary seal filler place takes place to leak, only needing to adjust secondary Gland further compresses the secondary seal filler, just can effectively improve sealing effect, and can not aggravate the wearing and tearing of chopped-off head stuffing box packing and plunger, sealability is reliable, the liquid that leaks between chopped-off head stuffing box packing and plunger, play self-lubricating function, reduced the wearing and tearing between chopped-off head stuffing box packing and plunger, prolonged product working life; Simultaneously, guarantee not have leakage between convex shoulder and pump housing part bonding face at the seal element that is provided with between the mating face of convex shoulder and pump housing parts, the O RunddichtringO in chopped-off head Gland and the filler box back macropore guarantees that it cooperates nothing leakage between cylndrical surface; Formed middle leakage accumulation chamber volume is big between chopped-off head stuffing box packing and secondary seal filler, the pressured fluid that leaks out from chopped-off head stuffing box packing rear, after the leakage accumulation chamber, pressure significantly reduces, for the inclusion seal of secondary seal filler has been created condition in the middle of entering.
Preferably, going back to the fistulae road is made of the casing passage and the pump housing passage of mutual perforation, the casing passage comprises that end face ring gathers groove, the poly-groove of end face ring is positioned at any side of filler casing convex shoulder and pump housing parts pump housing junction plane, end face ring gathers groove or is located on the filler casing convex shoulder, perhaps be located on the pump housing, be provided with in the poly-groove of end face ring return small opening along the Stuffing box axon to being communicated with middle leakage accumulation chamber; Pump housing passage is zigzag, pump housing passage is made up of inlet passage, outlet passage, connecting passage, the inlet passage that is arranged on top is positioned at the bottom of the poly-groove of end face ring, and gather groove with end face ring and connect, being located at the outlet passage of bottom and the imbibition chamber of pump housing parts connects, connecting passage is connected inlet passage and outlet passage, and pump housing passage is positioned at the outlet of pump housing outer surface by screw and sealer sealing; Be provided with outer sealing element between the mating face of described convex shoulder and pump housing parts, outer sealing element is positioned at the outside of the poly-groove of end face ring; Going back to the fistulae road takes back the leakage in the middle leakage accumulation chamber in the imbibition chamber of Plunger pump body parts by inside, there are not outer take back fistulae road, compact structure, eliminated the hidden danger of external pipeline rate of fault height and befouling environment, the poly-groove of end face ring has further been strengthened the effect of easing stress of middle leakage accumulation chamber, guarantees that further sealability is reliable.
Preferably, the chopped-off head stuffing box packing comprises the guide sleeve of front end, is provided with the first filler group, central ring pad, the second filler group and back end ring pad between guide sleeve and the chopped-off head Gland successively, the quantity of the central ring pad and the second filler group at least one; Guide sleeve, central ring pad, back end ring pad can adopt stainless steel, low carbon steel, cast iron, Cuprum alloy, zinc base alloy, graphite, graphite-based to fill any one manufacturing in metallic dust die casting, the filled polytetrafluoroethylene product material, above-mentioned material with corrosion resistance and not worn piston be principle, and definite according to the medium operating mode, as parameters such as medium kind, operating temperature, working pressures; The first filler group and the second filler group are made up of at least two square weave packings, the material of square weave packing can adopt any one manufacturing in carbon fiber, polytetrafluoroethylene fiber, aramid fiber or the shuffling fiber, its material is mainly determined according to the medium operating mode, guarantee that plunger and stuffing box packing wearing and tearing are little, long service life.
Preferably, the secondary seal filler is made up of the ring spacer of baffle ring, stuffing box packing group and the rear end of front end; Ring spacer and baffle ring can adopt stainless steel, low carbon steel, cast iron, Cuprum alloy, zinc base alloy, graphite, graphite-based to fill any one manufacturing in metallic dust die casting, the filled polytetrafluoroethylene product material, above-mentioned material with corrosion resistance and not worn piston be principle, and determine according to the medium operating mode; The stuffing box packing group is made up of at least two square weave packings, or the combination of square weave packing and V rubber seal, the material of square weave packing can adopt any one manufacturing in carbon fiber, polytetrafluoroethylene fiber, aramid fiber or the shuffling fiber, its material is mainly determined according to the medium operating mode, the nothing leakage is a prerequisite under the 1.0Mpa pressure to satisfy, guarantee that plunger and stuffing box packing wearing and tearing are little, secondary seal does not have leakage, long service life.
Aforementioned chopped-off head stuffing box packing and described structure of secondary seal filler or combining form; those skilled in the art does not carry out similar structure or the combination that creative work is realized; all belong to reprint of the present utility model or copy, all will fall into protection domain of the present utility model.
Preferably, seal element is the O type rubber ring that is located in any side ring groove of convex shoulder and pump housing part bonding face, assembling or change convenient.
Preferably, at least two of number of openings on the chopped-off head Gland front end boss sidewall, and upwards evenly distribute from the bottom of boss sidewall, the quantity of through hole is determined according to the size of chopped-off head Gland front end boss, backflow requires and the intensity of chopped-off head Gland is principle to satisfy, hole count very little, produce no standby hole, obstruction back and be back to middle leakage accumulation chamber, secondary seal filler outer end can produce leakage, hole count is too many, influence the intensity and the working life of chopped-off head Gland, guarantee that leakage is in time reduced pressure and do not leak and working life of level Gland from secondary seal filler outer end.
Preferably, the poly-groove of end face ring is located on the convex shoulder end face of filler casing; Outer sealing element between described convex shoulder and pump housing part bonding face is the O type rubber seal that is located in the filler casing convex shoulder end face annular groove, and is simple in structure, easy to process.
Preferably, at least two of time small opening quantity in the poly-groove of filler casing end face ring, and annular distribution makes progress from the bottom of circular groove, returning the quantity and the distribution form of small opening determines according to the physical dimension of filler casing, backflow requires and the intensity of filler casing is principle to satisfy, hole count very little, producing no standby hole, obstruction back is back in the poly-groove of filler casing end face ring, secondary seal filler outer end can produce leakage, hole count is too many, influence the intensity and the working life of filler casing, the distribution of returning small opening can be even distribution, also can be up and down symmetry or asymmetric non-uniform Distribution, determine, guarantee that leakage is in time reduced pressure and do not leak and working life of filler casing from secondary seal filler outer end with the concrete external structure of the Stuffing box that is used for different operating modes.
Preferably, O type rubber ring is positioned at the poly-groove the same side of end face ring, and O type rubber ring is arranged in the annular groove on the filler casing convex shoulder end face, and is simple in structure, easy to process.
Adopt the utility model of technique scheme, pressured fluid in the plunger pump pressure active chamber is through the clearance leakage between plunger surface and the chopped-off head stuffing box packing, lubricated plunger and chopped-off head stuffing box packing, and simultaneously the through hole from the chopped-off head Gland front end boss sidewall return drain in the middle of the leakage accumulation chamber, after the poly-groove decompression of the end face ring on the convex shoulder end face of a plurality of times small openings in the filler casing of middle leakage accumulation chamber, annular configuration, filler casing, by being positioned at the zigzag pump housing passage on the Plunger pump body, the imbibition chamber of inflow pump body component.Simultaneously, plunger pump suction-operated that produces in the imbibition process makes leakage be back to the imbibition chamber of pump housing parts smoothly; When the plunger pump discharge opeing, because the one-way valve effect in the pump housing parts active chamber, pressure in the imbibition chamber is usually at 0.1MPa～0.3MPa, so the secondary seal filler outside pressure reduction in middle leakage accumulation chamber and the atmosphere is much smaller than the designing requirement of 1.0Mpa, so, even remain in the leakage collection chamber or leak into the liquid of leakage collection chamber from the pressure active chamber, can be from secondary seal filler and plunger junction plane to external leakage yet.Realize not having the outer fistulae road, compact structure, backflow of taking back and do not had obstructions, the nothing hidden danger that leaks, non-environmental-pollution.
The utility model beneficial effect compared with prior art is, chopped-off head, secondary seal filler compress separately, and secondary seal does not have leakage, eccentric wear between plunger and stuffing box packing is little, and pressure reduction space is big, and effect of easing stress is good, the ring-type multichannel returns does not Lou have obstruction, do not take back the fistulae road outside having, compact structure does not have the hidden danger that leaks, non-environmental-pollution,, sealability is reliable, long service life.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation;
Fig. 2 is the A-A sectional view among the utility model Fig. 1;
Fig. 3 is the B-B sectional view among the utility model Fig. 1;
Fig. 4 is 2 times small opening distribution or asymmetrical distribution of the utility model embodiment schematic representation;
Fig. 5 is 3 times small openings of the utility model embodiment schematic representation that are symmetrically distributed up and down.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described, but therefore the utility model is not limited among the following embodiment:
Embodiment 1 is referring to Fig. 1, a kind of working pressure is a 35Mpa plunger pump Stuffing box non-leakage reversed flow type seal arrangement, comprise go back to fistulae road 9, pump housing parts 7, pump housing parts 7 are provided with the pump housing 71, imbibition chamber 72 and active chamber, be provided with one-way valve between imbibition chamber 72 and the active chamber, the plunger 73 of plunger pump is slidingly fitted in the hole of the pump housing 71 sidewalls, the front end of plunger 73 is arranged in active chamber, the rear end of plunger 73 is passed filler casing 2 and is connected with the transmission part of plunger pump, be provided with chopped-off head stuffing box packing 3 in the filler casing 2, secondary seal filler 5, Gland 4, middle leakage accumulation chamber 8, middle leakage accumulation chamber 8 is between chopped-off head stuffing box packing 3 and secondary seal filler 5, chopped-off head stuffing box packing 3 and secondary seal filler 5 surround and are slidingly fitted in plunger 73 outsides, the two ends of going back to fistulae road 9 are communicated with imbibition chamber 72 and middle leakage accumulation chamber 8 respectively, described filler casing 2 outsides are combined with pump bracket 6, the pump housing parts 7 in pump bracket 6 the place aheads are connected on the preceding body of wall of pump bracket 6 by bolt, the front end of filler casing 2 is provided with convex shoulder 22, convex shoulder 22 is between pump bracket 6 and pump housing parts 7, the preceding body of wall of pump bracket 6 is exposed in the rear end of filler casing 2, be provided with seal element 23 between the mating face of filler casing 2 convex shoulders 22 and pump housing parts 7, seal element 23 is positioned at plunger 73 outsides.
Referring to Fig. 1, described filler casing 2 inside are provided with ladder cylindrical hole 21, ladder cylindrical hole 21 is made of front end through hole 213, leading portion endoporus 211, rear end macropore 212, step 214 in being formed with between front end through hole 213 and the leading portion endoporus 211, and the diameter of front end through hole 213 is greater than plunger 73 diameters; Described Gland 4 is made up of chopped-off head Gland 41 and secondary Gland 42, chopped-off head Gland 41 is slidingly fitted in the rear end macropore 212 of filler casing 2 by cylindrical, between the fitting surface of chopped-off head Gland 41 and rear end macropore 212, be provided with O RunddichtringO 44, O RunddichtringO 44 is arranged in the seal ring ring groove shape groove at chopped-off head Gland 41 middle parts, the front end of chopped-off head Gland 41 is provided with boss 412 and bottom through-hole 414, the diameter of boss 412 is less than leading portion endoporus 211 diameters of filler casing 2, bottom through-hole 414 axially runs through boss 412, the diameter of bottom through-hole 414 is greater than plunger 73 diameters, chopped-off head stuffing box packing 3 is located in the leading portion endoporus 211 of filler casing 2, and between the interior step 214 of the front-end face of chopped-off head Gland 41 boss 412 and filler casing 2 leading portion endoporus 211, the rear of chopped-off head Gland 41 is provided with nut gland 43, nut gland 43 is connected by the rear end microcephaly 14 that screw thread and filler casing 2 are provided with screw thread, the inside of chopped-off head Gland 41 is provided with secondary stuffing hole 411, secondary stuffing hole 411 forms interior step 411b with bottom through-hole 414, chopped-off head Gland 41 is connected with secondary Gland 42 by the tapped hole 411a that secondary stuffing hole 411 rear ends are provided with, the diameter of bore of secondary Gland 42 is greater than plunger 73 diameters, secondary seal filler 5 is located in the secondary stuffing hole 411 of chopped-off head Gland 41, and between the interior step 411b of the front-end face of secondary Gland 42 and secondary stuffing hole 411; Leakage accumulation chamber 8 is by toroidal cavity 81 in the middle of described, annular groove 82, through hole 83 is formed, toroidal cavity 81 is looped around boss 412 outsides of chopped-off head Gland 41, be by chopped-off head stuffing box packing 3, the front end hole wall of filler casing 2 rear end macropores 212, the boss 412 of chopped-off head Gland 41 front ends surrounds formed annular space, annular groove 82 is by plunger 73, chopped-off head stuffing box packing 3, secondary seal filler 5, bottom through-hole 414 hole walls of chopped-off head Gland 41 surround formed annular space, through hole 83 is arranged on the sidewall of chopped-off head Gland 41 front end boss 412, and the two ends of through hole 83 are communicated with toroidal cavity 81 and annular groove 82 respectively.
Referring to Fig. 1, described time fistulae road 9 is made of the casing passage 91 and the pump housing passage 92 of mutual perforation, casing passage 91 comprises that end face ring gathers groove 221, the poly-groove 221 of end face ring is positioned at any side of filler casing 2 convex shoulders 22 and pump housing parts 7 pump housings 71 junction planes, end face ring gathers groove 221 or is located on filler casing 2 convex shoulders 22, perhaps be located on the pump housing 71, the small opening 222 that returns that is provided with in the poly-groove 221 of end face ring axially is communicated with middle leakage accumulation chamber 8 along filler casing 2; Pump housing passage 92 is zigzag, pump housing passage 92 is made up of inlet passage 921, outlet passage 922, connecting passage 923, the inlet passage 921 that is arranged on top is positioned at the bottom of the poly-groove 221 of end face ring, and gather groove 221 with end face ring and connect, the outlet passage 922 that is located at the bottom is connected with the imbibition chamber 72 of pump housing parts 7, connecting passage 923 is connected inlet passage 921 and outlet passage 922, and pump housing passage 92 is positioned at the outlet of the pump housing 71 outer surfaces by screw and sealer sealing; Be provided with outer sealing element 24 between the mating face of described convex shoulder 22 and pump housing parts 7, outer sealing element 24 is positioned at the outside of the poly-groove 221 of end face ring.
Referring to Fig. 1, described chopped-off head stuffing box packing 3 comprises the guide sleeve 31 of front end, be provided with the first filler group 32, central ring pad 33, the second filler group 35 and back 34, one central ring pads 33 of end ring pad and two second filler groups 35 between guide sleeve 31 and the chopped-off head Gland 41 successively; Guide sleeve 31, central ring pad 33, back end ring pad 34 adopt the Cuprum alloy manufacturing; The first filler group 32 is made up of three square weave packings, and two second filler groups 35 are made up of equal two square weave packings, and the material of square weave packing adopts the carbon fiber manufacturing.
Referring to Fig. 1, described secondary seal filler 5 is made up of the ring spacer 51 of baffle ring 53, stuffing box packing group 52 and the rear end of front end; Ring spacer 51 and baffle ring 53 adopt the Cuprum alloy manufacturing, and stuffing box packing group 52 is made up of two square weave packings, and the material of square weave packing adopts the carbon fiber manufacturing.
Referring to Fig. 1, described seal element 23 is the O type rubber ring in any side ring groove that is located at convex shoulder 22 and pump housing parts 7 mating faces.。
Referring to Fig. 2, through hole 83 quantity on described chopped-off head Gland 41 front end boss 412 sidewalls are 4, and upwards evenly distribute from the bottom of boss 412 sidewalls.
Referring to Fig. 1, the poly-groove 221 of end face ring is located on convex shoulder 22 end faces of filler casing 2; Outer sealing element 24 between described convex shoulder 22 and pump housing parts 7 mating faces is for being located at the O type rubber seal in the filler casing 2 convex shoulders 22 end face annular grooves.
Referring to Fig. 3, time small opening 222 quantity in the poly-groove 221 of filler casing 2 end face rings are 4, and upwards evenly distribute from the bottom of circular groove 221.
Referring to Fig. 1, O type rubber ring 23 is positioned at poly-groove 221 the same sides of end face ring, and O type rubber ring 23 is arranged in the annular groove on filler casing 2 convex shoulders 22 end faces.
Claims (10)
1, a kind of plunger pump Stuffing box non-leakage reversed flow type seal arrangement, comprise go back to fistulae road (9), pump housing parts (7), pump housing parts (7) are provided with the pump housing (71), imbibition chamber (72) and active chamber, be provided with one-way valve between imbibition chamber (72) and the active chamber, the plunger of plunger pump (73) is slidingly fitted in the hole of the pump housing (71) sidewall, the front end of plunger (73) is arranged in active chamber, the rear end of plunger (73) is passed filler casing (2) and is connected with the transmission part of plunger pump, be provided with chopped-off head stuffing box packing (3) in the filler casing (2), secondary seal filler (5), Gland (4), middle leakage accumulation chamber (8), middle leakage accumulation chamber (8) is positioned between chopped-off head stuffing box packing (3) and the secondary seal filler (5), chopped-off head stuffing box packing (3) and secondary seal filler (5) surround and are slidingly fitted in plunger (73) outside, the two ends of going back to fistulae road (9) are communicated with imbibition chamber (72) and middle leakage accumulation chamber (8) respectively, it is characterized in that: described filler casing (2) outside is combined with pump bracket (6), the pump housing parts (7) in pump bracket (6) the place ahead are connected on the preceding body of wall of pump bracket (6) by bolt, the front end of filler casing (2) is provided with convex shoulder (22), convex shoulder (22) is positioned between pump bracket (6) and the pump housing parts (7), the preceding body of wall of pump bracket (6) is exposed in the rear end of filler casing (2), be provided with seal element (23) between the mating face of filler casing (2) convex shoulder (22) and pump housing parts (7), seal element (23) is positioned at plunger (73) outside.
2, plunger pump Stuffing box non-leakage reversed flow type seal arrangement according to claim 1, it is characterized in that: described filler casing (2) inside is provided with ladder cylindrical hole (21), ladder cylindrical hole (21) is made of front end through hole (213), leading portion endoporus (211), rear end macropore (212), be formed with interior step (214) between front end through hole (213) and the leading portion endoporus (211), the diameter of front end through hole (213) is greater than plunger (73) diameter; Described Gland (4) is made up of chopped-off head Gland (41) and secondary Gland (42), chopped-off head Gland (41) is slidingly fitted in the rear end macropore (212) of filler casing (2) by cylindrical, between the fitting surface of chopped-off head Gland (41) and rear end macropore (212), be provided with O RunddichtringO (44), O RunddichtringO (44) is arranged in the seal ring ring groove shape groove at chopped-off head Gland (41) middle part, the front end of chopped-off head Gland (41) is provided with boss (412) and bottom through-hole (414), the diameter of boss (412) is less than leading portion endoporus (211) diameter of filler casing (2), bottom through-hole (414) axially runs through boss (412), the diameter of bottom through-hole (414) is greater than plunger (73) diameter, chopped-off head stuffing box packing (3) is located in the leading portion endoporus (211) of filler casing (2), and be positioned between the step (214) of the front-end face of chopped-off head Gland (41) boss (412) and filler casing (2) leading portion endoporus (211), the rear of chopped-off head Gland (41) is provided with nut gland (43), nut gland (43) is connected by the rear end microcephaly (14) that screw thread and filler casing (2) are provided with screw thread, the inside of chopped-off head Gland (41) is provided with secondary stuffing hole (411), secondary stuffing hole (411) forms interior step (411b) with bottom through-hole (414), chopped-off head Gland (41) is connected with secondary Gland (42) by the tapped hole (411a) that secondary stuffing hole (411) rear end is provided with, the diameter of bore of secondary Gland (42) is greater than plunger (73) diameter, secondary seal filler (5) is located in the secondary stuffing hole (411) of chopped-off head Gland (41), and is positioned between the interior step (411b) of the front-end face of secondary Gland (42) and secondary stuffing hole (411); Leakage accumulation chamber (8) is by toroidal cavity (81) in the middle of described, annular groove (82), through hole (83) is formed, toroidal cavity (81) is looped around boss (412) outside of chopped-off head Gland (41), be by chopped-off head stuffing box packing (3), the front end hole wall of filler casing (2) rear end macropore (212), the boss (412) of chopped-off head Gland (41) front end surrounds formed annular space, annular groove (82) is by plunger (73), chopped-off head stuffing box packing (3), secondary seal filler (5), bottom through-hole (414) hole wall of chopped-off head Gland (41) surrounds formed annular space, through hole (83) is arranged on the sidewall of chopped-off head Gland (41) front end boss (412), and the two ends of through hole (83) are communicated with toroidal cavity (81) and annular groove (82) respectively.
3, plunger pump Stuffing box non-leakage reversed flow type seal arrangement according to claim 1, it is characterized in that: described time fistulae road (9) is made of the casing passage (91) and the pump housing passage (92) of mutual perforation, casing passage (91) comprises that end face ring gathers groove (221), end face ring gathers any side that groove (221) is positioned at filler casing (2) convex shoulder (22) and pump housing parts (7) pump housings (71) junction plane, end face ring gathers groove (221) or is located on filler casing (2) convex shoulder (22), perhaps be located on the pump housing (71), end face ring gathers the small opening (222) that returns that is provided with in the groove (221) and axially is communicated with middle leakage accumulation chamber (8) along filler casing (2); Pump housing passage (92) is zigzag, pump housing passage (92) is made up of inlet passage (921), outlet passage (922), connecting passage (923), the inlet passage (921) that is arranged on top is positioned at the bottom of the poly-groove (221) of end face ring, and gather groove (221) with end face ring and connect, the outlet passage (922) that is located at the bottom is connected with the imbibition chamber (72) of pump housing parts (7), connecting passage (923) is connected inlet passage (921) and outlet passage (922), and pump housing passage (92) is positioned at the outlet of the pump housing (71) outer surface by screw and sealer sealing; Be provided with outer sealing element (24) between the mating face of described convex shoulder (22) and pump housing parts (7), outer sealing element (24) is positioned at the outside of the poly-groove (221) of end face ring.
4, plunger pump Stuffing box non-leakage reversed flow type seal arrangement according to claim 1, it is characterized in that: described chopped-off head stuffing box packing (3) comprises the guide sleeve (31) of front end, be provided with the first filler group (32), central ring pad (33), the second filler group (35) and back end ring pad (34) between guide sleeve (31) and the chopped-off head Gland (41) successively, the quantity of the central ring pad (33) and the second filler group (35) at least one; Guide sleeve (31), central ring pad (33), back end ring pad (34) can adopt stainless steel, low carbon steel, cast iron, Cuprum alloy, zinc base alloy, graphite, graphite-based to fill any one manufacturing in metallic dust die casting, the filled polytetrafluoroethylene product material; The first filler group (32) and the second filler group (35) are made up of at least two square weave packings, and the material of square weave packing can adopt any one manufacturing in carbon fiber, polytetrafluoroethylene fiber, aramid fiber or the shuffling fiber.
5, plunger pump Stuffing box non-leakage reversed flow type seal arrangement according to claim 1 is characterized in that: described secondary seal filler (5) is made up of the ring spacer (51) of baffle ring (53), stuffing box packing group (52) and the rear end of front end; Ring spacer (51) and baffle ring (53) can adopt stainless steel, low carbon steel, cast iron, Cuprum alloy, zinc base alloy, graphite, graphite-based to fill any one manufacturing in metallic dust die casting, the filled polytetrafluoroethylene product material, stuffing box packing group (52) is made up of at least two square weave packings, or the combination of square weave packing and V rubber seal, the material of square weave packing can adopt any one manufacturing in carbon fiber, polytetrafluoroethylene fiber, aramid fiber or the shuffling fiber.
6, plunger pump Stuffing box non-leakage reversed flow type seal arrangement according to claim 1 is characterized in that: described seal element (23) is the O type rubber ring in any side ring groove that is located at convex shoulder (22) and pump housing parts (7) mating face.
7, plunger pump Stuffing box non-leakage reversed flow type seal arrangement according to claim 2, it is characterized in that: at least two of through hole (83) quantity on described chopped-off head Gland (41) front end boss (412) sidewall, and from the upwards even distribution in the bottom of boss (412) sidewall.
8, plunger pump Stuffing box non-leakage reversed flow type seal arrangement according to claim 3 is characterized in that: described end face ring gathers on convex shoulder (22) end face that groove (221) is located at filler casing (2); Outer sealing element (24) between described convex shoulder (22) and pump housing parts (7) mating face is for being located at the O type rubber seal in filler casing (2) convex shoulder (22) the end face annular groove.
9, plunger pump Stuffing box non-leakage reversed flow type seal arrangement according to claim 3, it is characterized in that: return at least two of small opening (222) quantity in the poly-groove (221) of described filler casing (2) end face ring, and the annular distribution that makes progress from the bottom of circular groove (221).
10, plunger pump Stuffing box non-leakage reversed flow type seal arrangement according to claim 6, it is characterized in that: described O type rubber ring (23) is positioned at poly-groove (221) the same side of end face ring, and O type rubber ring (23) is arranged in the annular groove on filler casing (2) convex shoulder (22) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201276437U CN201412318Y (en) | 2009-06-12 | 2009-06-12 | Plunger pump packing box leak-free return flow type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201276437U CN201412318Y (en) | 2009-06-12 | 2009-06-12 | Plunger pump packing box leak-free return flow type sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201412318Y true CN201412318Y (en) | 2010-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201276437U Expired - Fee Related CN201412318Y (en) | 2009-06-12 | 2009-06-12 | Plunger pump packing box leak-free return flow type sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201412318Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062050A (en) * | 2013-01-10 | 2013-04-24 | 宁波得利时泵业有限公司 | Packing seal device of rotor pump |
| CN104747432A (en) * | 2015-03-31 | 2015-07-01 | 中国石油大学(北京) | Single-plunger metering pump and pump head assembly thereof |
| CN105961141A (en) * | 2016-05-30 | 2016-09-28 | 徐州工程学院 | Automatic water supplying and irrigation device for crops and manufacturing method of key part thereof |
| CN106593430A (en) * | 2016-12-13 | 2017-04-26 | 中国石油集团川庆钻探工程有限公司 | Overlapped sealing device for underground sampler control mechanism |
| CN111577593A (en) * | 2020-06-09 | 2020-08-25 | 阿奥艾斯能源科技成都有限公司 | Plunger assembly structure with cooling function for plunger pump |
| CN112377404A (en) * | 2020-11-20 | 2021-02-19 | 江苏核电有限公司 | Nuclear-grade plunger pump sealing assembly and installation and adjustment method thereof |
| CN114046243A (en) * | 2021-11-10 | 2022-02-15 | 宝鸡航天动力泵业有限公司 | Sand prevention sealing device for plunger of horizontal directional drilling mud pump |
| CN114776578A (en) * | 2022-04-29 | 2022-07-22 | 江苏彩象园林机械有限公司 | Leakage-proof internal circulation type plunger pump |
| CN117212144A (en) * | 2023-10-12 | 2023-12-12 | 成都同流科技有限公司 | Anti-leakage rotary plunger pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062050A (en) * | 2013-01-10 | 2013-04-24 | 宁波得利时泵业有限公司 | Packing seal device of rotor pump |
| CN103062050B (en) * | 2013-01-10 | 2016-04-20 | 宁波得利时泵业有限公司 | The stuffing seal of rotor pump |
| CN104747432A (en) * | 2015-03-31 | 2015-07-01 | 中国石油大学(北京) | Single-plunger metering pump and pump head assembly thereof |
| CN105961141A (en) * | 2016-05-30 | 2016-09-28 | 徐州工程学院 | Automatic water supplying and irrigation device for crops and manufacturing method of key part thereof |
| CN106593430A (en) * | 2016-12-13 | 2017-04-26 | 中国石油集团川庆钻探工程有限公司 | Overlapped sealing device for underground sampler control mechanism |
| CN106593430B (en) * | 2016-12-13 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Overlapped sealing device for underground sampler control mechanism |
| CN111577593A (en) * | 2020-06-09 | 2020-08-25 | 阿奥艾斯能源科技成都有限公司 | Plunger assembly structure with cooling function for plunger pump |
| CN112377404A (en) * | 2020-11-20 | 2021-02-19 | 江苏核电有限公司 | Nuclear-grade plunger pump sealing assembly and installation and adjustment method thereof |
| CN112377404B (en) * | 2020-11-20 | 2021-12-17 | 江苏核电有限公司 | Nuclear-grade plunger pump sealing assembly and installation and adjustment method thereof |
| CN114046243A (en) * | 2021-11-10 | 2022-02-15 | 宝鸡航天动力泵业有限公司 | Sand prevention sealing device for plunger of horizontal directional drilling mud pump |
| CN114776578A (en) * | 2022-04-29 | 2022-07-22 | 江苏彩象园林机械有限公司 | Leakage-proof internal circulation type plunger pump |
| CN117212144A (en) * | 2023-10-12 | 2023-12-12 | 成都同流科技有限公司 | Anti-leakage rotary plunger pump |
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