CN113819048A - Structure suitable for automatic compensation seal abrasion clearance of high pressure water plunger pump - Google Patents
Structure suitable for automatic compensation seal abrasion clearance of high pressure water plunger pump Download PDFInfo
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- CN113819048A CN113819048A CN202111235516.0A CN202111235516A CN113819048A CN 113819048 A CN113819048 A CN 113819048A CN 202111235516 A CN202111235516 A CN 202111235516A CN 113819048 A CN113819048 A CN 113819048A
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- plunger
- pressure
- seal
- sealed
- energy storage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/02—Packing the free space between cylinders and pistons
Abstract
The utility model provides a structure in automatic compensation seal wearing and tearing clearance suitable for high pressure water plunger pump, has adopted the sealed special structural design of combination of taking the backpressure, the band energy storage forms radial backpressure, use the spring energy storage along the plunger axial simultaneously, after sealed, the normal wearing and tearing of plunger form the clearance, can utilize the energy storage to remove the clearance from radial and axial two directions, can form lasting power of holding tightly between the sealed plunger of group, sealed and plunger life reach more than 4 times of traditional design structure. This patent plunger's sealed two-stage seal structure design has been adopted in the combination, and the one-level seal group has produced the infiltration phenomenon after long-time use, and the second grade pressure boost sealing joint just can come into use after the energy storage release, and the life of high pressure water descaling pump increases substantially, and the descaling quality is stable, and continuous production efficiency promotes, spare part and maintenance cost reduce substantially.
Description
Technical Field
The invention relates to the field of high-pressure water plunger pumps, in particular to a structure for automatically compensating a sealing abrasion gap suitable for a high-pressure water plunger pump.
Background
The high-pressure water plunger pump is widely used in the field of metal hot forming processing in the steel industry and is used for removing iron oxide scales formed on the surface of heated steel raw materials. With the social requirement on the surface quality of steel products becoming higher and higher, the requirement on the descaling pressure of steel rolling enterprises also becoming higher and higher, and the high-pressure water plunger pump develops towards the direction of high pressure and large flow. The plunger cylinder of the high-pressure water plunger pump is a supercharging device which compresses sucked low-pressure water at high speed to form high-pressure water jet and discharges the high-pressure water jet to a high-pressure pipeline through a liquid discharge valve. High pressure is realized through high-pressure seal assembly, and traditional high pressure water plunger pump uses the packing sealed, and when the high-speed reciprocal linear motion was done in the cylinder body to the plunger, and the high-speed friction of seal structure produced wearing and tearing, sealed wearing and tearing back and sealed and the unable automatic compensation of clearance grow between the plunger, cause the plunger jar infiltration, can only solve through changing after shutting down sealed, and is with low costs and high efficiency. After long-time water seepage, water seepage and pressure relief are gradually developed, the output pressure can be greatly reduced, the descaling effect of the steel product is seriously influenced, and the product quality and the working efficiency are influenced.
Traditional plunger cylinder uses the packing sealed, and the pollutant carrying capacity is poor, and the stereoplasm tiny particle that inhales in the aquatic is in between sealed face and the plunger surface, produces abrasive wear to the plunger surface when plunger high-speed motion, produces the clearance after the plunger surface wear and can not eliminate automatically between sealed, causes the plunger cylinder to reveal the decompression, seriously influences the normal use of plunger pump. The output pressure is greatly reduced after the plunger cylinder leaks, so that the high-pressure water descaling fails, the quality of steel products is influenced, and the production process is interrupted. Replacement of the seal and plunger assembly is required, spare part costs and maintenance costs are increased, and production interruptions result in reduced efficiency.
Disclosure of Invention
The invention discloses a structure for automatically compensating a seal abrasion gap of a high-pressure water plunger pump, which can maintain the continuous work of the plunger pump in a high-pressure state by eliminating the gap in time by an energy storage element after the abrasion gap of a seal assembly is enlarged, does not need to replace the seal, and realizes high-efficiency energy-saving and low-cost operation. In order to achieve the purpose, the invention provides the following technical scheme:
a structure suitable for the automatic compensation seal wearing clearance of the high-pressure water plunger pump, including LO backpressure combination seal; a plunger body, a gland plunger, a hexagonal bolt in a cylinder body, a first static seal, a spacer ring and five elements form a high-pressure seal chamber; the automatic compensation type high-pressure sealing device comprises an original spring, a spring guide sleeve, a backpressure sealing group I, a packing ring I and a plunger, wherein a working mechanism for automatically compensating a sealing abrasion gap is formed in a high-pressure sealing chamber; when the pressurization seal is observed that the high-pressure seal group slightly leaks, the pressurization seal is put into use after the pressurization screw cap is adjusted, the spring and cap are pre-tightened, the inner hexagonal bolt prevents the pressurization screw cap from loosening, and reliable pressurization is guaranteed.
The sealed internal surface of L type is opened there is the spiral groove, the stereoplasm granule that the pump contains in the suction water is by timely accomodating wherein, avoided the contact between stereoplasm granule and the plunger surface and formed the abrasive particle wearing and tearing, helix structure has avoided gathering of stereoplasm granule, the stereoplasm granule can be along the play water side of helix direction discharge pump, the life of plunger has been prolonged, O type circle internal diameter is less than the sealed external diameter of L type, prop open back O type circle energy storage, the cover forms the backpressure on the external diameter of L type circle, take place the clearance that wearing and tearing back and plunger produced at L type seal assembly and can be by timely automatic elimination, seal automatic plunger surface of hugging closely.
The original spring is installed in the high-pressure sealing chamber after being compressed and stored with energy, the spring guide sleeve is pushed to abut against the first backpressure sealing group, the first packing ring limits the movement of the backpressure sealing assembly by means of positioning of the chamber division spacer ring, when a gap is formed between seals after the sealing assembly is worn, the energy storage spring releases energy to timely and automatically eliminate the gap, the original elements and the plunger form a working mechanism for automatically compensating the abrasion gap of the seals in the high-pressure sealing chamber, the high-elasticity O-shaped ring after energy storage provides radial holding force to compensate the radial gap, the original spring compensates the axial gap, the gap formed after the sealing assembly is worn is automatically and timely eliminated, and the plunger pump is maintained to operate in a high-pressure state.
The invention solves the technical problems that: plunger of high pressure water descaling pump is sealed to adopt special structural design, and the contact surface design of sealed and plunger has spiral guide slot structure, is accomodate in the guide slot when inhaling aquatic to have the stereoplasm granule not hard to hard contact with the plunger surface, has avoided the emergence of abrasive particle wearing and tearing, and the stereoplasm granule also can not gather in the guide slot, can be along with in the helix reachs high-pressure chamber and the high-pressure pipeline of plunger pump, has avoided the wearing and tearing to the plunger, has improved the life of plunger.
This patent is sealed does not adopt traditional packing, has adopted the sealed special construction design of combination who takes the backpressure, and the hoop energy storage forms radial backpressure, uses the spring energy storage along the plunger axial simultaneously, after sealed, the normal wearing and tearing of plunger form the clearance, can utilize the energy storage to remove the clearance from radial and two directions of axial, can form lasting power of holding tightly between the sealed plunger of organizing, sealed and plunger life reach more than 4 times of traditional project organization. This patent plunger's sealed two-stage seal structure design has been adopted in the combination, and the one-level seal group has produced the infiltration phenomenon after long-time use, and the second grade pressure boost sealing joint just can come into use after the energy storage release, and the life of high pressure water descaling pump increases substantially, and the descaling quality is stable, and continuous production efficiency promotes, spare part and maintenance cost reduce substantially.
Compared with the prior art, the invention has the beneficial effects that: the high-pressure water plunger pump adopting the structure can automatically absorb and discharge hard particles sucked into water, automatically eliminates gaps by means of energy storage elements after sealing abrasion, effectively avoids abrasive wear of the plunger, prolongs the service life of the plunger and the sealing assembly, can continuously work in a high-pressure state for a long time, and realizes high efficiency, energy conservation and low cost operation.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a view of the L-shaped seal of the present invention;
Detailed Description
A structure suitable for the automatic compensation seal wearing clearance of the high-pressure water plunger pump, including LO backpressure combination seal; a high-pressure sealing chamber is formed by five elements, namely a plunger body gland 5, a plunger cylinder body 3, an inner hexagonal bolt 13, a first static seal 11 and a spacer ring 7; an original spring 15, a spring guide sleeve 16, a backpressure seal group I19, a packing ring I9 and a plunger 1 form a working mechanism for automatically compensating a seal abrasion gap in a high-pressure seal chamber, an L-shaped seal after energy storage provides a radial holding force to compensate a radial gap, the original energy storage spring 15 compensates an axial gap, three elements of a chamber partition ring 7, a pressurizing cylinder body 2 and a pressurizing screw cap 4 form a pressurizing seal chamber, and a pressurizing cylinder bottom ring 6, a backpressure seal group II 20, a packing ring II 10 and the plunger 1 form pressurizing high-pressure seal in the pressurizing seal chamber; when the pressurization seal is observed that the high-pressure seal group slightly leaks, the pressurization seal is put into use after the pressurization screw cap 4 is adjusted, the spring 22 is pre-tightened, the nut 21 and the inner hexagonal bolt 23 are pre-tightened to prevent the pressurization screw cap from loosening, and reliable pressurization is guaranteed.
The sealed internal surface of L type is opened there is the spiral recess, the stereoplasm granule that the pump contains in the suction water is by timely accomodating wherein, avoided the contact between stereoplasm granule and the plunger surface and formed the abrasive particle wearing and tearing, helix structure has avoided gathering of stereoplasm granule, the stereoplasm granule can be along the play water side of helix direction discharge pump, the life of plunger has been prolonged, O type ring 201 internal diameter is less than the external diameter of L type seal 101, strut back O type ring 201 energy storage, the cover forms the backpressure on the external diameter of L type ring, take place the clearance that wears to the back and plunger 101 produces at L type seal assembly and can be by timely automatic elimination, seal automatic plunger surface of hugging closely.
The original spring 15 is installed in a high-pressure sealing chamber after being compressed for energy storage, the spring guide sleeve 16 is pushed to abut against a backpressure sealing group I19, a packing ring I9 limits the movement of a backpressure sealing assembly by means of positioning of a chamber separating ring 7, when a gap is formed between seals after the sealing assembly is worn, the energy storage spring releases energy to automatically eliminate the gap in time, the original elements and the plunger 1 form a working mechanism for automatically compensating the abrasion gap of the seal in the high-pressure sealing chamber, the high-elasticity O-shaped ring 101 after energy storage provides radial holding force for compensating the radial gap, the original spring 15 for energy storage compensates the axial gap, the gap formed after the sealing assembly is worn is automatically and timely eliminated, and the plunger pump is maintained to operate in a high-pressure state.
The sealed group structure of LO type backpressure is accomodate aquatic stereoplasm granule, avoids sealed to the wearing and tearing on plunger surface, and the backpressure rubber ring cramps L and seals, and the radial clearance of compensation seal and plunger, the sealed internal surface of L is opened spiral groove and is received dirty leading dirty, and the energy storage of backpressure O type circle is followed and is cramped L and sealed.
The O-shaped ring 201 compensates a radial gap formed between the worn L-shaped ring and the plunger surface, the O-shaped ring 201 is designed in a small size and high elasticity mode, the O-shaped ring 201 is hooped outside the L-shaped ring 101 after being opened for energy storage, and the O-shaped ring releases energy after sealing and the plunger generate a gap, so that the gap is eliminated and the plunger is tightly held.
A plurality of OL backpressure seal are combined together, and certain area of contact is formed with the plunger surface, guarantees the sealed effect under high pressure.
The axial automatic pressing device of the seal group has the functions of: when the axial clearance is generated by the seal abrasion, the seal can be automatically pressed by the energy storage spring. And an original spring is arranged at the bottom of the plunger cylinder and is installed after pre-tightening energy storage. The pre-tightening force of the spring is applied to the back pressure sealing group through the guide sleeve to axially compress the back pressure sealing assembly. Can produce the clearance between sealed wearing and tearing back is sealed, and the automatic release of spring pretightning force compresses tightly the compaction with each sealed in the sealing group, and the continuous wearing and tearing of sealed, the clearance that produces can be compensated by energy storage spring is automatic, produces the power of holding tightly that lasts to the plunger surface, has prolonged sealed life greatly, has guaranteed sealed effect.
The original spring 15 automatically compresses the back pressure sealing assembly, potential energy is stored after the spring is installed and compressed, the spring releases energy after a gap is formed by seal abrasion, and the sealing assembly is automatically compressed.
The spring guide sleeve 16 is a copper thin-wall sleeve and is concentrically arranged with the plunger, a small gap is formed between the inner surface of the spring guide sleeve and the plunger, the inner surface of the spring guide sleeve and the plunger is used for guiding the plunger and reducing friction force, a bulge is designed on the left side of the outer surface of the spring guide sleeve to block the spring, the space distance formed by the bulge and the plunger body gland 5 is used for compressing and storing energy for the spring, and the spring pushes the guide sleeve to compact the sealing assembly when a gap is formed after sealing abrasion.
The first back pressure sealing assembly 19, 4 groups of OL back pressure seals are stacked back to form a sealing surface with the plunger to seal the high pressure water working principle generated after the plunger moves at high speed or other principles: 4 groups of OL back pressure sealing combination form a certain contact area, the sealing surface forms a wrapping structure with a certain pre-pressure on the plunger surface by means of continuous energy release of radial and axial energy storage elements, high-pressure water generated after the high-speed movement of the plunger is sealed, and the high-pressure water with a preset pressure is output to the high-pressure water plunger pump
The packing ring 14 limits the position of the back pressure seal assembly, balances the elastic force transmitted to the seal assembly from the original spring, has the same oblique angle as the L-shaped seal, provides supporting force for the seal assembly and limits the position of the seal assembly.
The pressure boost cylinder body, its functional role does: after the sealing assembly is operated for a long time and water seepage occurs, a pressure boosting cover is used for pressing a back pressure sealing assembly II, sealing surfaces are formed on the back pressure sealing assembly II and the surface of the plunger, the auxiliary sealing assembly I is used for sealing high-pressure water and maintaining high-pressure output of the high-pressure water plunger pump, the pressure boosting cover is screwed and pressed tightly on the back pressure sealing assembly II, a cap is screwed and pre-compressed to store energy by a spring, the spring props against the pressure boosting cover to prevent the pressure boosting cover from loosening, and long-lasting and reliable holding force is formed between the sealing and the plunger surface.
The back pressure sealing components of the second 20 and the third 3 groups of OL back pressure seals are stacked back to form a sealing surface with the plunger piston, high-pressure water generated after the plunger piston moves at a high speed is sealed, the 3 groups of OL back pressure seals form a certain contact area after being combined, a wrapping structure with a certain pre-pressure is formed on the plunger piston surface by the sealing surface by means of the pressing force of the pressurizing cover, and the high-pressure water generated after the plunger piston moves at a high speed is sealed
The pressurizing cover 4 is screwed to press the second pressurizing cover to tightly seal the assembly, the thick thread is designed, and the second pressurizing cover is rotated and then moved to the right to tightly seal the assembly.
The pre-tightening spring 22 pre-compresses energy to continuously release energy to compress the pressurizing cover to prevent the pressurizing cover from loosening, and the tower-shaped pressure spring performs pre-compression energy storage through the combining cap 21 to release energy to compress the pressurizing cover to prevent the pressurizing cover from loosening.
And cap 21 precompresses the pretightening spring after screwing, and the sustained release can compress the increasing cover, prevents it from becoming flexible, and fine tooth self-locking thread structure can not be back off and become flexible after screwing, guarantees the spring early warning energy storage, can advance or move back to adjust the size of the pretightening force of spring.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a structure in automatic compensation seal wearing and tearing clearance suitable for high pressure water plunger pump which characterized in that: the LO back pressure combined seal is included; a high-pressure sealing chamber is formed by five elements, namely a plunger body gland (5), a plunger cylinder body (3), an inner hexagonal bolt (13), a first static seal (11) and a spacer ring (7); an original spring (15), a spring guide sleeve (16), a backpressure sealing group I (19), a packing ring I (9) and a plunger (1) form a working mechanism for automatically compensating a sealing abrasion gap in a high-pressure sealing chamber, an L-shaped seal after energy storage provides a radial holding force to compensate a radial gap, the energy storage original spring (15) compensates an axial gap, three elements, namely a chamber partition ring (7), a pressurizing cylinder body (2) and a pressurizing screw cap (4), form a pressurizing sealing chamber, and a pressurizing cylinder bottom ring (6), a backpressure sealing group II (20), a packing ring II (10) and the plunger (1) form pressurizing high-pressure seal in the pressurizing sealing chamber; when the pressure boost is sealed and slightly reveals the high-pressure seal group, put into the use behind adjustment pressure boost spiral shell lid (4), pretension spring (22), and cap (21), interior hexagonal bolt (23) prevent that the pressure boost spiral shell lid is not hard up, guarantee reliable pressure boost.
2. The structure of claim 1, wherein: the sealed internal surface of L type is opened there is the spiral groove, the stereoplasm granule that the pump contains in the suction water is by timely accomodating wherein, avoided the contact between stereoplasm granule and the plunger surface and formed the abrasive particle wearing and tearing, helix structure has avoided the gathering of stereoplasm granule, the stereoplasm granule can be along the play water side of helix direction discharge pump, the life of plunger has been prolonged, O type circle (201) internal diameter is less than the external diameter of L type seal (101), prop open back O type circle (201) energy storage, the cover forms the backpressure on the external diameter of L type circle, take place the clearance that wearing and tearing back and plunger (101) produced at L type seal assembly and can be by timely automatic elimination, sealed automatic hugging closely the plunger surface.
3. The structure of claim 1, wherein: the original spring (15) is installed in a high-pressure sealing chamber after being compressed and stored with energy, a spring guide sleeve (16) is pushed to abut against a back pressure sealing group I (19), a packing ring I (9) limits the movement of a back pressure sealing assembly by positioning through a chamber separating ring (7), when a gap is generated between seals after the sealing assembly is abraded, the energy storage spring releases energy to automatically eliminate the gap in time, the original spring and the plunger (1) form a working mechanism for automatically compensating the abrasion gap of the seals in the high-pressure sealing chamber, a high-elasticity O-shaped ring (101) after energy storage provides radial holding force to compensate a radial gap, the original spring (15) compensates an axial gap, the gap formed after the sealing assembly is abraded is automatically and timely eliminated, and the plunger pump is maintained to operate in a high-pressure state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111235516.0A CN113819048A (en) | 2021-10-22 | 2021-10-22 | Structure suitable for automatic compensation seal abrasion clearance of high pressure water plunger pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111235516.0A CN113819048A (en) | 2021-10-22 | 2021-10-22 | Structure suitable for automatic compensation seal abrasion clearance of high pressure water plunger pump |
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| CN113819048A true CN113819048A (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111235516.0A Pending CN113819048A (en) | 2021-10-22 | 2021-10-22 | Structure suitable for automatic compensation seal abrasion clearance of high pressure water plunger pump |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2336172Y (en) * | 1998-05-15 | 1999-09-01 | 李全盛 | Leakless packing seal structure of valve |
| CN2641387Y (en) * | 2003-09-19 | 2004-09-15 | 徐州车氏密封有限公司 | L shape sliding ring type combined sealing |
| CN201858353U (en) * | 2010-10-28 | 2011-06-08 | 淄博爱科密封件有限公司 | L-O-combined-shaped sealing part |
| CN102628338A (en) * | 2011-06-20 | 2012-08-08 | 成都盛帮密封件股份有限公司 | Novel roller bit sealing ring |
| CN205013842U (en) * | 2015-09-29 | 2016-02-03 | 洛阳芳华机械制造有限公司 | Air damper is compound bearing seal of sound for axle |
| CN205172927U (en) * | 2015-12-02 | 2016-04-20 | 内蒙古中天宏远再制造股份公司 | Water under high pressure dephosphorization water pump |
| CN205678251U (en) * | 2016-06-13 | 2016-11-09 | 大唐华银电力股份有限公司金竹山火力发电分公司 | Hot blast regulation Circular ventilation door axle head composite sealing assembly |
-
2021
- 2021-10-22 CN CN202111235516.0A patent/CN113819048A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2336172Y (en) * | 1998-05-15 | 1999-09-01 | 李全盛 | Leakless packing seal structure of valve |
| CN2641387Y (en) * | 2003-09-19 | 2004-09-15 | 徐州车氏密封有限公司 | L shape sliding ring type combined sealing |
| CN201858353U (en) * | 2010-10-28 | 2011-06-08 | 淄博爱科密封件有限公司 | L-O-combined-shaped sealing part |
| CN102628338A (en) * | 2011-06-20 | 2012-08-08 | 成都盛帮密封件股份有限公司 | Novel roller bit sealing ring |
| CN205013842U (en) * | 2015-09-29 | 2016-02-03 | 洛阳芳华机械制造有限公司 | Air damper is compound bearing seal of sound for axle |
| CN205172927U (en) * | 2015-12-02 | 2016-04-20 | 内蒙古中天宏远再制造股份公司 | Water under high pressure dephosphorization water pump |
| CN205678251U (en) * | 2016-06-13 | 2016-11-09 | 大唐华银电力股份有限公司金竹山火力发电分公司 | Hot blast regulation Circular ventilation door axle head composite sealing assembly |
Non-Patent Citations (1)
| Title |
|---|
| 关醒凡: "《现代泵技术手册》", 宇航出版社 * |
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