CN113059321A - Production and processing method of plunger pump for high-quality high-pressure cleaning machine - Google Patents
Production and processing method of plunger pump for high-quality high-pressure cleaning machine Download PDFInfo
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- CN113059321A CN113059321A CN202110325503.6A CN202110325503A CN113059321A CN 113059321 A CN113059321 A CN 113059321A CN 202110325503 A CN202110325503 A CN 202110325503A CN 113059321 A CN113059321 A CN 113059321A
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
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Abstract
The invention discloses a production and processing method of a plunger pump for a high-quality high-pressure cleaning machine, which comprises the following processing steps: the pump shell and the pump cover are respectively fixed on a machine tool workbench by adopting a four-jaw chuck, the four-jaw chuck is ensured to be coaxial with the machine tool workbench, the edge of the end part of the pump shell is turned inwards by 1-1.5cm through a machine tool, a convex ring is formed at the end part of the pump shell, and the surface of the pump cover is turned into 1.5-3cm through the machine tool to form a circular groove. According to the invention, the fixing groove is arranged on the connecting surface of the pump shell and the pump cover, the middle part of the fixing groove is cut into the water-drop-shaped sealing groove by a horizontal cutter at an angle of 45 degrees in two directions, the side ring on the sealing ring is embedded into the water-drop-shaped sealing groove during installation, the pump cover is fastened through the bolt to extrude the sealing ring, so that the two side surfaces of the sealing ring are completely attached to the sealing groove, the sealing performance is improved, and the convex ring at the end part of the pump shell is in threaded connection with the groove on the inner wall of the pump cover during installation of the pump cover, so that the sealing performance of the pump.
Description
Technical Field
The invention relates to the technical field of plunger pump processing, in particular to a production and processing method of a plunger pump for a high-quality high-pressure cleaning machine.
Background
The plunger pump is one of water pumps, the whole water pump industry is a typical investment pull type industry, and the market demand is greatly influenced by national macro policies, particularly by the macro policies of water conservancy, building, energy and other industries. The hydraulic plunger pump belongs to one type of plunger pumps, no enterprise with annual output value more than 10 million yuan exists in the hydraulic industry, even the enterprise with annual output value more than 5 million yuan can yield fingers, and the annual total sales of the whole industry is not as high as that of one enterprise. When the matching industry does not have the ability of competing with foreign enterprises, the artificial control means of the imported products to the domestic market is strong and unconscious. The fact that most profits of the engineering machinery are taken away by the matching parts not only causes great pain to host production enterprises, but also can no longer be expected. Based on this situation, capital for host plants and other industrial areas is constantly entering the hydraulic industry. Billions of dollars of investment into the hydraulic industry. The situation will undoubtedly increase the competition strength in the industry and change the original industrial pattern and order. The plunger pump is a typical positive displacement hydraulic machine, is driven by a prime mover, converts input mechanical energy into pressure energy of liquid, and then inputs the pressure energy and the flow into a system, is a power source of a hydraulic system, and is widely applied to various industries in industrial production and daily life because the plunger pump can convey liquid under high pressure.
The high pressure cleaning machine is one cleaning apparatus with high pressure plunger pump to generate high pressure water to wash the surface of the object, and the high pressure water will strip away the dirt and wash away the dirt to clean the surface of the object. Because the high-pressure water column is used for cleaning dirt, a little cleaner is needed to be added unless the dirt is stubborn oil stain, and the foam generated by strong water pressure can take away the common dirt, the high-pressure cleaning is also one of the most scientific, economic and environment-friendly cleaning modes acknowledged in the world. The high pressure of the high pressure washer is from the plunger pump.
At present, only adopt the bolt to carry out this fixedly between the pump body of current plunger pump and the apron, in long-time use, because pump body internal pressure is great, liquid can flow out through the gap between apron and the pump body, influences normal use. For this reason, a new scheme needs to be designed to give improvements.
Disclosure of Invention
The invention aims to provide a production and processing method of a plunger pump for a high-quality high-pressure cleaning machine, which solves the problems in the background art and meets the actual use requirements.
In order to achieve the purpose, the invention provides the following technical scheme: a production and processing method of a plunger pump for a high-quality high-pressure cleaning machine comprises the following processing steps:
the method comprises the following steps: respectively fixing the pump shell and the pump cover on a machine tool workbench by adopting a four-jaw chuck, ensuring that the four-jaw chuck is coaxial with the machine tool workbench, turning 1-1.5cm inwards at the edge of the end part of the pump shell by a machine tool, forming a convex ring at the end part of the pump shell, and turning 1.5-3cm inwards at the surface of the pump cover by the machine tool to form a circular groove;
step two: the disc-shaped milling cutter is used for milling threads matched with each other at the milling positions on the inner wall of the groove and the outer wall of the convex ring, and the forming blade is replaced to repeatedly run two empty cutters so as to reduce the surface roughness of the threads;
step three: fixing grooves are respectively formed in opposite surfaces of the pump shell and the pump cover, the fixing grooves are annular, and the center of the annular width is positioned at one tenth of the position from the outer walls of the pump shell and the pump cover to the center;
step four: after a knife is inserted at an angle of 45 degrees from the center of the fixed groove and extends into the groove for 2-4cm, the knife is pulled out, a sealing groove is formed in the middle of the fixed groove, after the knife is inserted at an angle of-45 degrees from the center of the fixed groove and extends into the sealing groove for 2-4cm, the knife is pulled out, an annular bulge is formed in the middle of the inner wall of the sealing groove, the cross section of the annular bulge is in an equilateral triangle shape, and then the annular bulge;
step five: removing burrs at the cutting parts on the surfaces of the pump shell and the pump cover by using a triangular scraper, blowing off the burrs by using an air gun, immersing the pump shell and the pump cover into an ultrasonic cleaning machine, cleaning the pump cover and the pump shell by using an industrial cleaning agent, and taking out and drying after cleaning;
step six: replacing a polishing head of the polishing machine with a rough polishing head, extending the polishing head into the sealing groove, and roughly polishing the sealing groove to form fine burrs on the inner wall of the sealing groove;
step seven: the method comprises the following steps of installing components such as an eccentric disc, a plunger, a spring, a cylinder body and a one-way valve inside a pump shell, placing the end part of a sealing ring in a sealing groove opening after the installation is finished, hammering one side of the sealing ring into a sealing groove of the pump shell by using a mallet, assembling the pump cover, tapping a shell by using the mallet during the assembly of the pump cover to enable the other side of the sealing ring to enter the sealing groove of the pump cover, rotating the pump cover in the tapping process to enable a convex ring to be in threaded connection with the surface of a groove, and fastening by using a bolt after;
step eight: injecting oil liquid into a crankcase to carry out testing, firstly adjusting the pressure to 1/5 with specified working pressure, running for 3-6min, then adjusting the pressure to 1/3 with specified working pressure, running for 3-6min, finally adjusting the pressure to the specified working pressure, running for 30min, monitoring the oil temperature, the pressure, the flow and the state of a pump, and filling in a pump correction record;
step nine: placing the tested plunger pump in an ultrasonic cleaning machine to clean oil attached to the surface, and drying the plunger pump by using a hot air blower after cleaning;
step ten: and numbering the plunger pumps, fixing labels, and finally boxing and warehousing.
In a preferred embodiment of the present invention, the seal ring includes a center ring and a side ring, the seal groove and the side ring are both annular and have a droplet-shaped cross section, and the burr on the inner wall of the seal groove is gradually inserted into the surface of the side ring along with the fastening of the bolt.
As a preferable embodiment of the invention, the inner cavity of the pump shell is tapered towards two ends, the inner wall of the end part of the convex ring is provided with a straight section of 2.5-4.5cm towards the inside of the pump shell, and the end part of the straight section is connected with the end part of the tapered section.
In the fifth step, the ultrasonic cleaning frequency is 28KHz, the cleaning time is 15-25min, the cleaning temperature is 55-75 ℃, and the drying temperature is 80 ℃.
As a preferred embodiment of the invention, the threads are respectively arranged in the middle of the outer wall of the convex ring and the inner wall of the groove, and 2-4 circles are respectively arranged from the middle to two sides.
As a preferred embodiment of the present invention, the bolt is disposed at a center position of a distance from the groove to the fixing groove.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to a pump cover, which is characterized in that a fixed groove is arranged on the connecting surface of a pump shell and a pump cover, a water-drop-shaped sealing groove is formed in the middle of the fixed groove by cutting with a horizontal cutter at an angle of 45 degrees in two directions, a side ring on a sealing ring is embedded into the water-drop-shaped sealing groove during installation, the sealing groove is composed of a center ring with a square cross section and a side ring with a water-drop-shaped cross section, the side rings are arranged in the middle of two sides of the center ring, the side rings are embedded into the sealing groove during installation of the sealing ring, the pump cover is fastened through bolts to extrude the sealing ring, so that the surfaces of the side rings are completely attached to the sealing groove, two side walls of the center ring are attached to the fixed groove, the sealing performance is improved, and a convex ring at the.
Drawings
FIG. 1 is a view of the pump cover and pump housing of the present invention;
fig. 2 is an enlarged view of a in fig. 1.
In the figure, 1, a pump cover; 2. a pump housing; 3. a convex ring; 4. a groove 5 and a sealing ring; 6. a center ring; 7. a side ring; 8. deburring; 9. fixing grooves; 10. sealing the groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a production and processing method of a plunger pump for a high-quality high-pressure cleaning machine comprises the following processing steps:
the method comprises the following steps: the pump shell 2 and the pump cover 1 are respectively fixed on a machine tool workbench by adopting a four-jaw chuck, the four-jaw chuck is coaxial with the machine tool workbench, the edge of the end part of the pump shell 2 is turned inwards by 1.5cm by a machine tool, a convex ring 3 is formed at the end part of the pump shell 2, a circular groove 4 is formed by turning 2cm on the surface of the pump cover 1 by the machine tool, the groove 4 is at least 0.5cm deeper than the convex ring 3, and the diameter of the groove 4 is slightly larger than that of the convex ring 3, so that the convex ring 3 can be embedded into the groove 4;
step two: the disc-shaped milling cutter is used for milling threads matched with each other on the inner wall of the groove 4 and the outer wall of the convex ring 3, the forming blade is replaced, two cutting blank cutters are repeatedly moved, the cutting is moved along the original path, so that the surface roughness of the threads is reduced, the convex ring 3 is connected with the groove 4 through the threads in the installation process, and the installation tightness of the pump cover 1 and the pump shell 2 can be improved to a certain degree;
step three: fixing grooves 9 are respectively formed in opposite surfaces of the pump shell 2 and the pump cover 1, the fixing grooves 9 are annular, and the center of the annular width is located at one tenth of the position from the outer walls of the pump shell 2 and the pump cover 1 to the center;
step four: after a knife is inserted at an angle of 45 degrees from the center of the fixed groove 9 and extends into 3cm, a seal groove 10 is formed in the middle of the fixed groove 9, and after the knife is inserted at an angle of-45 degrees from the center of the fixed groove 9 and extends into a seal groove 103cm, the knife is extracted, an annular bulge is formed in the middle of the inner wall of the seal groove 10, the section of the annular bulge is in an equilateral triangle shape, the annular bulge is cut by horizontally inserting the knife, a complete seal groove 10 is formed, the section of the seal groove 10 is in an inverted water drop shape, the inner part and the outer part of the water drop-shaped seal groove 10 are small and large, the side rings 7 are matched with the water drop-shaped side rings 7 in section, the side rings 7 are embedded into the seal groove 10 and then attached to the inner wall of the seal groove 10, the sealing effect is improved;
step five: removing burrs 8 at the cutting parts of the surfaces of the pump shell 2 and the pump cover 1 by using a triangular scraper, blowing off the burrs 8 by using an air gun, immersing the pump shell 2 and the pump cover 1 into an ultrasonic cleaning machine, cleaning the pump cover 1 and the pump shell 2 by using an industrial cleaning agent, taking out and drying after cleaning, placing aside after drying the pump cover 1 and the pump shell 2, and performing next processing after the temperature of the pump cover 1 and the pump shell 2 is reduced to normal temperature;
step six: replacing a polishing head of the polishing machine with a rough polishing head, extending the polishing head into the sealing groove 10, roughly polishing the sealing groove 10, blowing out fragments in the sealing groove 10 by using an air gun after polishing, forming fine burrs 8 on the inner wall of the sealing groove 10, and enabling the fine burrs 8 to be in surface contact with the side ring 7 after the side ring 7 is embedded into the sealing groove 10, so that the connection stability is improved;
step seven: the method comprises the following steps of installing components such as an eccentric disc, a plunger, a spring, a cylinder body and a one-way valve inside a pump shell 2, placing the end part of a sealing ring 5 at an opening of a sealing groove 10 after the installation is finished, then hammering one side of the sealing ring 5 into the sealing groove 10 of the pump shell 2 by using a mallet, then assembling a pump cover 1, tapping a shell by using the mallet when the pump cover 1 is assembled, enabling the other side of the sealing ring 5 to enter the sealing groove 10 of the pump cover 1, rotating the pump cover 1 in the tapping process, enabling a convex ring 3 to be in threaded connection with the surface of a groove 4, and fastening by using;
step eight: injecting oil liquid into a crankcase to carry out testing, firstly adjusting the pressure to 1/5 with the specified working pressure, running for 4min, then adjusting the pressure to 1/3 with the specified working pressure, running for 4min, finally adjusting the pressure to the specified working pressure, running for 30min, monitoring the oil temperature, the pressure, the flow and the state of a pump, and filling in a pump correction record;
step nine: placing the tested plunger pump in an ultrasonic cleaning machine to clean oil attached to the surface, drying the plunger pump by using a hot air blower after cleaning, and adding a degreasing cleaning agent while ultrasonic cleaning to improve the cleaning effect;
step ten: and numbering the plunger pumps, fixing labels, and finally boxing and warehousing.
As shown in fig. 2: the sealing ring 5 comprises a center ring 6 and a side ring 7, the sealing groove 10 and the side ring 7 are both annular, the cross section of the sealing groove is in a water drop shape, and burrs 8 on the inner wall of the sealing groove 10 are gradually pricked into the surface of the side ring 7 along with bolt fastening.
As shown in fig. 1: the inner cavity of the pump shell 2 is gradually reduced towards two ends, the inner wall of the end part of the convex ring 3 is provided with a straight section of 3.5cm towards the inside of the pump shell 2, and the end part of the straight section is connected with the end part of the gradually reduced section.
In a further improvement, in the fifth step, the ultrasonic cleaning frequency is 28KHz, the cleaning time is 25min, the cleaning temperature is 60 ℃, and the drying temperature is 80 ℃.
As shown in fig. 1: the screw thread sets up respectively in the middle part of 3 outer walls of bulge loops and 4 inner walls of recess, and sets up 3 rings respectively to both sides by the middle part, and the back in recess 4 is embedded into to the tip of bulge loop 3, and the screw thread contacts each other.
Specifically, the bolt is disposed at the center of the distance from the groove 4 to the fixing groove 9.
In the invention, a fixed groove 9 is arranged on the connecting surface of a pump shell 2 and a pump cover 1, a water-drop-shaped sealing groove 10 is formed in the middle of the fixed groove 9 by cutting with a horizontal cutter at an angle of 45 degrees in two directions, a side ring 7 on a sealing ring 5 is embedded into the water-drop-shaped sealing groove 10 during installation, the sealing groove 10 consists of a central ring 6 with a square cross section and side rings 7 with water-drop-shaped cross sections, the side rings 7 are arranged in the middle of two sides of the central ring 6, the side rings 7 are embedded into the sealing groove 10 during installation of the sealing ring 5, the sealing ring 5 is extruded by fastening the pump cover 1 through bolts, so that the surface of the side ring 7 is completely attached to the sealing groove 10, the two side walls of the central ring 6 are attached to the fixing groove 9, the sealing performance is improved, when the pump cover 1 is installed, the convex ring 3 at the end part of the pump shell 2 is in threaded connection with the groove 4 on the inner wall of the pump cover 1, and the sealing performance of the pump cover 1 and the pump shell 2 is further improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A production and processing method of a plunger pump for a high-quality high-pressure cleaning machine is characterized by comprising the following steps: the method comprises the following processing steps:
the method comprises the following steps: the pump shell (2) and the pump cover (1) are respectively fixed on a machine tool workbench by adopting a four-jaw chuck, the four-jaw chuck is ensured to be coaxial with the machine tool workbench, the edge of the end part of the pump shell (2) is turned inwards by 1-1.5cm through a machine tool, a convex ring (3) is formed at the end part of the pump shell (2), and a circular groove (4) is formed on the surface of the pump cover (1) by 1.5-3cm through the machine tool;
step two: the disc-shaped milling cutter is used for milling threads matched with each other at the milling positions on the inner wall of the groove (4) and the outer wall of the convex ring (3), and the forming blade is replaced to repeatedly run two empty cutters so as to reduce the surface roughness of the threads;
step three: fixing grooves (9) are respectively formed in opposite surfaces of the pump shell (2) and the pump cover (1), the fixing grooves (9) are annular, and the center of the annular width is positioned at one tenth of the position from the outer walls of the pump shell (2) and the pump cover (1) to the center;
step four: a knife is inserted into the center of the fixed groove (9) at an angle of 45 degrees and extends into the groove for 2-4cm, then the knife is pulled out, a sealing groove (10) is formed in the middle of the fixed groove (9), the knife is inserted into the groove (10) at an angle of-45 degrees and extends into the groove for 2-4cm, then the knife is pulled out, an annular bulge is formed in the middle of the inner wall of the sealing groove (10), the cross section of the annular bulge is in an equilateral triangle shape, and then the annular bulge is cut by horizontally inserting the knife, so that a complete sealing;
step five: the method comprises the following steps of (1) removing burrs (8) at cutting positions on the surfaces of a pump shell (2) and a pump cover (1) by using a triangular scraper, blowing off the burrs (8) by using an air gun, immersing the pump shell (2) and the pump cover (1) into an ultrasonic cleaner, cleaning the pump cover (1) and the pump shell (2) by using an industrial cleaning agent, and taking out and drying after cleaning;
step six: replacing a polishing head of the polishing machine with a rough polishing head, extending the polishing head into the sealing groove (10), and roughly polishing the sealing groove (10) to form fine burrs (8) on the inner wall of the sealing groove (10);
step seven: the pump cover is characterized in that parts such as an eccentric disc, a plunger, a spring, a cylinder body and a one-way valve in the pump shell (2) are installed, after the installation is finished, the end part of a sealing ring (5) is arranged at the opening of a sealing groove (10), then a mallet is adopted to hammer one side of the sealing ring (5) into the sealing groove (10) of the pump shell (2), then the pump cover (1) is assembled, the mallet is used for flicking the shell when the pump cover (1) is assembled, the other side of the sealing ring (5) enters the sealing groove (10) of the pump cover (1), the pump cover (1) is rotated in the flicking process, the convex ring (3) is in threaded connection with the surface of the groove (4), and;
step eight: injecting oil liquid into a crankcase to carry out testing, firstly adjusting the pressure to 1/5 with specified working pressure, running for 3-6min, then adjusting the pressure to 1/3 with specified working pressure, running for 3-6min, finally adjusting the pressure to the specified working pressure, running for 30min, monitoring the oil temperature, the pressure, the flow and the state of a pump, and filling in a pump correction record;
step nine: placing the tested plunger pump in an ultrasonic cleaning machine to clean oil attached to the surface, and drying the plunger pump by using a hot air blower after cleaning;
step ten: and numbering the plunger pumps, fixing labels, and finally boxing and warehousing.
2. The production and processing method of the plunger pump for the high-quality high-pressure cleaning machine according to claim 1, characterized in that: sealing washer (5) are including center ring (6) and side ring (7), seal groove (10) and side ring (7) all are cyclic annular and the cross-section is the water droplet shape, and burr (8) of seal groove (10) inner wall pricks into side ring (7) surface along with the bolt-up gradually.
3. The production and processing method of the plunger pump for the high-quality high-pressure cleaning machine according to claim 1, characterized in that: the inner cavity of the pump shell (2) is gradually reduced towards two ends, the inner wall of the end part of the convex ring (3) is provided with a straight section of 2.5-4.5cm towards the inside of the pump shell (2), and the end part of the straight section is connected with the end part of the gradually reduced section.
4. The production and processing method of the plunger pump for the high-quality high-pressure cleaning machine according to claim 1, characterized in that: in the fifth step, the ultrasonic cleaning frequency is 28KHz, the cleaning time is 15-25min, the cleaning temperature is 55-75 ℃, and the drying temperature is 80 ℃.
5. The production and processing method of the plunger pump for the high-quality high-pressure cleaning machine according to claim 1, characterized in that: the threads are respectively arranged in the middle of the outer wall of the convex ring (3) and the inner wall of the groove (4), and 2-4 circles are respectively arranged from the middle to two sides.
6. The production and processing method of the plunger pump for the high-quality high-pressure cleaning machine according to claim 1, characterized in that: the bolt is arranged in the center of the distance from the groove (4) to the fixing groove (9).
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| CN202110325503.6A CN113059321B (en) | 2021-03-26 | 2021-03-26 | Production and processing method of plunger pump for high-quality high-pressure cleaning machine |
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| CN202110325503.6A CN113059321B (en) | 2021-03-26 | 2021-03-26 | Production and processing method of plunger pump for high-quality high-pressure cleaning machine |
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