CN212455025U - Main control valve body for engineering machinery - Google Patents
Main control valve body for engineering machinery Download PDFInfo
- Publication number
- CN212455025U CN212455025U CN202021029448.3U CN202021029448U CN212455025U CN 212455025 U CN212455025 U CN 212455025U CN 202021029448 U CN202021029448 U CN 202021029448U CN 212455025 U CN212455025 U CN 212455025U
- Authority
- CN
- China
- Prior art keywords
- flow passage
- row
- vertical flow
- vertical
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Valve Housings (AREA)
Abstract
The utility model relates to a main control valve body for engineering machinery, which comprises a main body; the main body is rectangular, and twelve runner ports are arranged on the upper end face of the main body; twelve runner ports are arranged on the lower end surface of the main body; three runner ports are arranged on the front end surface of the main body; three runner ports are arranged on the rear end face of the main body; the left end face and the right end face of the main body are respectively provided with a square convex block, the upper end face of the convex block is lower than the upper end face of the main body, the lower end face of the convex block is flush with the lower end face of the main body, the upper end face of the convex block on the left side is provided with two flow passage holes, the left end face of the convex block on the left side is provided with a flow passage port, and the upper end face of the convex block on the; the body is integral with the lug. Compact structure and convenient production.
Description
Technical Field
The utility model relates to a main part foundry goods, concretely relates to engineering machine is main control valve body for machine tool.
Background
The control valve is used as a key part in a hydraulic system and has the advantages of high integration level, strong reliability, long service life and the like. The valve body is made of nodular cast iron, a casting runner is complex and large, the surface of the casting is irregular, no chill can be placed, and the riser position of the casting is difficult to place, so that isolated hot nodes of the casting are more and dispersed, the phenomenon of shrinkage cavity level of the casting is easy to occur, and the product leaks in a pressure state. The valve body casting has the following problems:
1) the casting defects of casting shrinkage cavity, shrinkage porosity, internal pores and the like, particularly the defect of micro pores in the casting are overcome, and the compactness of the internal structure is improved, so that no leakage exists under the high-pressure working state with the rated pressure of more than or equal to 50 Mpa.
2) And controlling the straightness of the cast blank of the main valve hole to be less than or equal to 1.0 millimeter.
3) The clearance of the core assembly results in the control of dimensional deviations of the casting.
Disclosure of Invention
The utility model provides a main control valve body for engineering machine tool:
the technical scheme of the utility model:
a main control valve body for engineering machinery comprises a main body, wherein the main body is rectangular, and twelve runner ports are arranged on the upper end surface of the main body; twelve runner ports are arranged on the lower end surface of the main body; three runner ports are arranged on the front end surface of the main body; three runner ports are arranged on the rear end face of the main body; the left end face and the right end face of the main body are respectively provided with a square convex block, the upper end face of the convex block is lower than the upper end face of the main body, the lower end face of the convex block is flush with the lower end face of the main body, the upper end face of the convex block on the left side is provided with two flow passage holes, the left end face of the convex block on the left side is provided with a flow passage port, and the upper end face of the convex block on the; the body is integral with the lug.
Twelve vertical flow channels are arranged in the main body and are main valve holes, the upper end and the lower end of each vertical flow channel are respectively connected with the upper end face and the lower end face of the main body in a one-to-one correspondence mode, two vertical flow channels are arranged in the left side protruding block, the upper end of each vertical flow channel is respectively connected with the flow channel holes in the upper end face of the left side protruding block in a one-to-one correspondence mode, two vertical flow channels are arranged in the right side protruding block, the upper ends of the vertical flow channels are respectively connected with the flow channel holes in the upper end face of.
The upper sections of the front-row second vertical flow channel and the front-row third vertical flow channel, the front-row fourth vertical flow channel and the front-row fifth vertical flow channel, the rear-row second vertical flow channel and the rear-row third vertical flow channel, and the rear-row fourth vertical flow channel and the rear-row fifth vertical flow channel are respectively communicated through upper transverse auxiliary flow channels, and all the upper transverse auxiliary flow channels are leveled.
The front-row second vertical flow channel and the rear-row second vertical flow channel, the front-row fourth vertical flow channel and the rear-row fourth vertical flow channel, the front-row sixth vertical flow channel and the middle section of the rear-row sixth vertical flow channel are connected through longitudinal auxiliary flow channels, the longitudinal auxiliary flow channels on the two sides are flush, the middle longitudinal auxiliary flow channel is higher than the longitudinal auxiliary flow channels on the two sides, and the front end and the rear end of each longitudinal auxiliary flow channel are connected with the flow channel openings on the front end face and the rear end face of the main body in a one-to.
Annular grooves are arranged at the upper sections of the front row first vertical flow passage, the front row seventh vertical flow passage, the rear row first vertical flow passage and the rear row seventh vertical flow passage, all the annular grooves are flush with the longitudinal auxiliary flow passages at the two sides, and are respectively connected with the longitudinal auxiliary flow passages at the same side through transition flow passages.
The front row second vertical flow passage and the front row third vertical flow passage, the front row fourth vertical flow passage and the front row fifth vertical flow passage, the rear row second vertical flow passage and the rear row third vertical flow passage, and the rear row fourth vertical flow passage and the rear row fifth vertical flow passage are respectively communicated through lower transverse auxiliary flow passages, all the lower transverse auxiliary flow passages are flush, and the lower transverse auxiliary flow passages are correspondingly connected with flow passage openings on the left end surface of the left bump.
The lower ends of the front row first vertical flow passage, the front row seventh vertical flow passage, the rear row first vertical flow passage and the rear row seventh vertical flow passage are respectively connected with vertical auxiliary flow passages, and the lower ends of the vertical auxiliary flow passages are correspondingly connected with flow passage ports on the lower end faces of the left side convex block and the right side convex block one by one;
the vertical auxiliary flow channels are connected with the lower transverse auxiliary flow channels in a one-to-one correspondence mode.
The front row third vertical flow passage, the front row fifth vertical flow passage, the back row third vertical flow passage and the back row fifth vertical flow passage are respectively provided with two annular grooves, the annular grooves are positioned between the upper transverse auxiliary flow passage and the lower transverse auxiliary flow passage, the front row fourth vertical flow passage and the front row fifth transverse flow passage are respectively provided with a square groove, the square groove is positioned below the middle longitudinal auxiliary flow passage, the annular grooves on the lower sides of the front row third vertical flow passage and the front row fifth vertical flow passage are respectively connected with the square groove of the front row fourth vertical flow passage through transition flow passages, and the annular grooves on the lower sides of the back row third vertical flow passage and the back row fifth vertical flow passage are respectively connected with the square groove of the back row fourth vertical flow passage through transition flow passages.
The straightness of the main valve hole is less than or equal to 1.0 millimeter.
Index parameters of the valve body are as follows:
1) the material is as follows: QT 600-3.
2) The tensile strength of the body is as follows: not less than 600 MPa.
3) Yield strength: not less than 370 MPa.
4) HB hardness: 190-270.
5) Spheroidization grade: 1-3 grades.
6) The metallographic structure should meet the evaluation of GB/T9441-2009.
7) Graphite size grade: 6-8 grades.
8) Has no defects of slag inclusion, pores, shrinkage cavity and shrinkage porosity.
9) A valve body: 149 KG.
The casting method of the main control body adopts a resin sand process, and the loam core forms an internal flow passage of the main body and is formed by combining the main core and the small core; the main core is a phi 18 hollow pipe, and holes are formed in the side face of the main core.
The casting method comprises the following steps:
1) core making
The core is made by adopting Jinying B570US magnetite sand and an oil pressure core shooter, which can ensure the complete molding of the sand core, avoid the phenomenon that the sand core is not shot (surface molding, and the inside has a cavity) and combine.
2) Moulding
The common resin sand molding method adopts a phi 120 x 150 high-heating necking riser, the diameter of the necking neck of the necking riser is 60mm, and resin sand mixed by iron ore sand is used at the position of wall thickness; the influence of reverse compensation caused by the wall thickness is greatly reduced, meanwhile, the wall thickness part also adopts iron ore sand, so that the wall thickness part is preferentially solidified, the appearance is more perfect than that made by cold iron, and the riser can greatly improve the molten iron feeding capacity and efficiency. Meanwhile, the phenomenon of overheating at a riser is directly avoided by adopting the water inflow of the thin gates on the two side surfaces, after pouring is finished, the casting is subjected to anatomical detection again, the defects of shrinkage cavities, shrinkage porosity and the like are not found, other requirements can also meet the standard of QT600-3, and the appearance of the casting is very perfect.
3) Melting
Smelting molten iron, and inoculating by adopting a silicon-strontium inoculant; considering that in the casting process, the micro-pore phenomenon exists in the valve body, which is not a general outer surface pore, but a black spot shape appearing in the casting after the casting is finished, so that the use of the casting is seriously influenced, and the leakage phenomenon is caused; in order to solve the problem, multiple tests are carried out on smelting, and the inoculant adopted by the method is analyzed to have great influence on the defects, so that the inoculation is carried out by adopting the silicon-strontium inoculant, the coarse structure phenomenon can be well solved, the pressure test is free from leakage phenomenon after the processing, and the compactness of the casting is improved.
4) Pouring
Pouring by adopting water inflow from thin gates on two side surfaces; the thin gates on the two side surfaces are adopted for water inflow, so that the phenomenon of overheating at a riser is directly avoided; the defects of shrinkage cavities, shrinkage porosity and the like are not found in the anatomical detection of the casting, other requirements can also meet the standard of QT600-3, and the appearance of the casting is very perfect.
The phi 18 hollow pipe is adopted, holes are formed in the side face of the hollow pipe, the main hole is preferentially cooled by cooling bottom lubar ore, and a necking riser is used for preventing the casting from expanding, so that the straightness of the main valve hole is guaranteed to be smaller than 1.0 mm.
Resin sand mixed by the iron ore sand: mixing 50KG iron ore sand with 150G furan resin for 5 minutes, then mixing 50KG iron ore sand with 88G curing agent for 5 minutes, and then mixing and stirring the two to obtain the product for molding.
The utility model has the advantages of reasonable design, ingenious design, compact structure and convenient production.
Drawings
Fig. 1 is a perspective view of the valve body.
Fig. 2 is a perspective view of the internal flow passage of the valve body.
Fig. 3 is a front view of the flow passage inside the valve body.
Fig. 4 is a top view of the flow passage inside the valve body.
Fig. 5 is a bottom view of the flow passage inside the valve body.
Fig. 6 is a left side view of the flow passage inside the valve body.
Fig. 7 is a right side view of the internal flow passage of the valve body.
Fig. 8 is a rear view of the flow passage inside the valve body.
The figure shows a left lug 2, a right lug 3 and a main valve hole 4 of a main body 1.
Detailed Description
As shown in fig. 1-8, a main control valve body for engineering machinery comprises a main body 1, wherein the main body 1 is rectangular, and twelve runner ports are arranged on the upper end surface of the main body 1; twelve runner ports are arranged on the lower end surface of the main body 1; three runner ports are arranged on the front end surface of the main body 1; three runner ports are arranged on the rear end surface of the main body 1; the left end face and the right end face of the main body 1 are respectively provided with a square lug 2 and a square lug 3, the upper end faces of the lug 2 and the lug 3 are lower than the upper end face of the main body 1, the lower end faces of the lug 2 and the lug 3 are flush with the lower end face of the main body 1, the upper end face of the left lug 2 is provided with two flow passage holes, the left end face of the left lug 2 is provided with a flow passage port, and the upper end face of the right lug 3 is provided with two flow passage ports; the main body 1 is integrated with a lug 2 and a lug 3; twelve vertical flow channels are arranged in the main body 1 and are main valve holes 4, the upper ends and the lower ends of the main valve holes are respectively connected with the flow channel ports on the upper end surface and the lower end surface of the main body in a one-to-one correspondence mode, two vertical flow channels are arranged in the left side bump, the upper ends of the left side bump are respectively connected with the flow channel ports on the upper end surface of the left side bump in a one-to-one correspondence mode, two vertical flow channels are arranged in the right side bump, the upper ends of the right side bump are respectively connected with the flow channel ports on the upper end; the upper sections of the front row second vertical flow channel and the front row third vertical flow channel, the front row fourth vertical flow channel and the front row fifth vertical flow channel, the rear row second vertical flow channel and the rear row third vertical flow channel, the rear row fourth vertical flow channel and the rear row fifth vertical flow channel are respectively communicated through upper transverse auxiliary flow channels, and all the upper transverse auxiliary flow channels are level; the front-row second vertical flow channel and the rear-row second vertical flow channel, the front-row fourth vertical flow channel and the rear-row fourth vertical flow channel, the front-row sixth vertical flow channel and the middle section of the rear-row sixth vertical flow channel are connected through longitudinal auxiliary flow channels, the longitudinal auxiliary flow channels on the two sides are flush, the longitudinal auxiliary flow channel in the middle is higher than the longitudinal auxiliary flow channels on the two sides, and the front end and the rear end of each longitudinal auxiliary flow channel are connected with the flow channel openings on the front end surface and the rear end surface of the main body in a one; annular grooves are arranged at the upper sections of the front row first vertical flow passage, the front row seventh vertical flow passage, the rear row first vertical flow passage and the rear row seventh vertical flow passage, all the annular grooves are flush with the longitudinal auxiliary flow passages at the two sides and are respectively connected with the longitudinal auxiliary flow passages at the same side through transition flow passages; the front row second vertical flow passage and the front row third vertical flow passage, the front row fourth vertical flow passage and the front row fifth vertical flow passage, the rear row second vertical flow passage and the rear row third vertical flow passage, and the rear row fourth vertical flow passage and the rear row fifth vertical flow passage are respectively communicated through lower transverse auxiliary flow passages, all the lower transverse auxiliary flow passages are flush, and the lower transverse auxiliary flow passages are correspondingly connected with flow passage ports on the left end surface of the left bump; the lower ends of the front row first vertical flow passage, the front row seventh vertical flow passage, the rear row first vertical flow passage and the rear row seventh vertical flow passage are respectively connected with vertical auxiliary flow passages, and the lower ends of the vertical auxiliary flow passages are correspondingly connected with flow passage ports on the lower end faces of the left side convex block and the right side convex block one by one; the vertical auxiliary flow channels are connected with the lower transverse auxiliary flow channels in a one-to-one corresponding mode; the front row third vertical flow passage, the front row fifth vertical flow passage, the back row third vertical flow passage and the back row fifth vertical flow passage are respectively provided with two ring grooves, the ring grooves are positioned between the upper transverse auxiliary flow passage and the lower transverse auxiliary flow passage, the front row fourth vertical flow passage and the front row fifth transverse flow passage are respectively provided with a square groove, the square groove is positioned below the middle longitudinal auxiliary flow passage, the ring grooves on the lower sides of the front row third vertical flow passage and the front row fifth vertical flow passage are respectively connected with the square groove of the front row fourth vertical flow passage through transition flow passages, and the ring grooves on the lower sides of the back row third vertical flow passage and the back row fifth vertical flow passage are respectively connected with the square groove of the back row fourth vertical flow passage through transition flow passages; the straightness of the main valve hole is less than or equal to 1.0 mm; the parameter indexes of the valve body are as follows: 1) the material is as follows: QT 600-3; 2) the tensile strength of the body is as follows: not less than 600 MPa; 3) yield strength: not less than 370 MPa; 4) HB hardness: 190-; 5) spheroidization grade: 1-3 grade; 6) the metallographic structure should meet the evaluation of GB/T9441-2009; 7) graphite size grade: 6-8 grades; 8) the defects of slag inclusion, pores, shrinkage cavities and shrinkage porosity are avoided; 9) a valve body: 149 KG; the valve body is formed by casting a resin sand process, and the mud core forms an internal flow passage of the main body and is formed by combining a main core and a small core; the main core is a phi 18 hollow pipe, and holes are formed in the side face of the main core.
The above disclosure is only for the preferred embodiment of the present invention, but not intended to limit itself, and any changes and modifications made by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.
Claims (3)
1. A main control valve body for engineering machinery comprises a main body; the device is characterized in that the main body is rectangular, and twelve runner ports are arranged on the upper end surface of the main body; twelve runner ports are arranged on the lower end surface of the main body; three runner ports are arranged on the front end surface of the main body; three runner ports are arranged on the rear end face of the main body; the left end face and the right end face of the main body are respectively provided with a square convex block, the upper end face of the convex block is lower than the upper end face of the main body, the lower end face of the convex block is flush with the lower end face of the main body, the upper end face of the convex block on the left side is provided with two flow passage holes, the left end face of the convex block on the left side is provided with a flow passage port, and the upper end face of the convex block on the; the body is integral with the lug;
twelve vertical flow channels are arranged in the main body and are main valve holes, the upper ends and the lower ends of the main valve holes are respectively connected with the flow channel ports on the upper end surface and the lower end surface of the main body in a one-to-one correspondence mode, two vertical flow channels are arranged in the left side convex block, the upper ends of the left side convex block are respectively connected with the flow channel ports on the upper end surface of the left side convex block in a one-to-one correspondence mode, two vertical flow channels are arranged in the right side convex block, the upper ends of the right side convex block are respectively connected with the flow channel;
the upper sections of the front row second vertical flow channel and the front row third vertical flow channel, the front row fourth vertical flow channel and the front row fifth vertical flow channel, the rear row second vertical flow channel and the rear row third vertical flow channel, the rear row fourth vertical flow channel and the rear row fifth vertical flow channel are respectively communicated through upper transverse auxiliary flow channels, and all the upper transverse auxiliary flow channels are level;
the front-row second vertical flow channel and the rear-row second vertical flow channel, the front-row fourth vertical flow channel and the rear-row fourth vertical flow channel, the front-row sixth vertical flow channel and the middle section of the rear-row sixth vertical flow channel are connected through longitudinal auxiliary flow channels, the longitudinal auxiliary flow channels on the two sides are flush, the longitudinal auxiliary flow channel in the middle is higher than the longitudinal auxiliary flow channels on the two sides, and the front end and the rear end of each longitudinal auxiliary flow channel are connected with the flow channel openings on the front end surface and the rear end surface of the main body in a one;
annular grooves are arranged at the upper sections of the front row first vertical flow passage, the front row seventh vertical flow passage, the rear row first vertical flow passage and the rear row seventh vertical flow passage, all the annular grooves are flush with the longitudinal auxiliary flow passages at the two sides and are respectively connected with the longitudinal auxiliary flow passages at the same side through transition flow passages;
the front row second vertical flow passage and the front row third vertical flow passage, the front row fourth vertical flow passage and the front row fifth vertical flow passage, the rear row second vertical flow passage and the rear row third vertical flow passage, and the rear row fourth vertical flow passage and the rear row fifth vertical flow passage are respectively communicated through lower transverse auxiliary flow passages, all the lower transverse auxiliary flow passages are flush, and the lower transverse auxiliary flow passages are correspondingly connected with flow passage ports on the left end surface of the left bump;
the lower ends of the front row first vertical flow passage, the front row seventh vertical flow passage, the rear row first vertical flow passage and the rear row seventh vertical flow passage are respectively connected with vertical auxiliary flow passages, and the lower ends of the vertical auxiliary flow passages are correspondingly connected with flow passage ports on the lower end faces of the left side convex block and the right side convex block one by one;
the vertical auxiliary flow channels are connected with the lower transverse auxiliary flow channels in a one-to-one corresponding mode;
the front row third vertical flow passage, the front row fifth vertical flow passage, the back row third vertical flow passage and the back row fifth vertical flow passage are respectively provided with two ring grooves, the ring grooves are positioned between the upper transverse auxiliary flow passage and the lower transverse auxiliary flow passage, the front row fourth vertical flow passage and the front row fifth transverse flow passage are respectively provided with a square groove, the square groove is positioned below the middle longitudinal auxiliary flow passage, the ring grooves on the lower sides of the front row third vertical flow passage and the front row fifth vertical flow passage are respectively connected with the square groove of the front row fourth vertical flow passage through transition flow passages, and the ring grooves on the lower sides of the back row third vertical flow passage and the back row fifth vertical flow passage are respectively connected with the square groove of the back row fourth vertical flow passage through transition flow passages;
the straightness of the main valve hole is less than or equal to 1.0 millimeter.
2. The main control valve body for construction machinery according to claim 1, wherein index parameters of the valve body are:
1) the material is as follows: QT 600-3;
2) the tensile strength of the body is as follows: not less than 600 MPa;
3) yield strength: not less than 370 MPa;
4) HB hardness: 190-;
5) spheroidization grade: 1-3 grade;
6) the metallographic structure should meet the evaluation of GB/T9441-2009;
7) graphite size grade: 6-8 grades;
8) without the defects of slag inclusion, air holes, shrinkage cavities and shrinkage porosity
9) A valve body: 149 KG.
3. The main control valve body for construction machinery according to claim 1, wherein the valve body is cast by a resin sand process, and a sand core constitutes an internal flow passage of the main body and is combined by the main core and the small core; the main core is a phi 18 hollow pipe, and holes are formed in the side face of the main core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021029448.3U CN212455025U (en) | 2020-06-08 | 2020-06-08 | Main control valve body for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021029448.3U CN212455025U (en) | 2020-06-08 | 2020-06-08 | Main control valve body for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212455025U true CN212455025U (en) | 2021-02-02 |
Family
ID=74491444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021029448.3U Active CN212455025U (en) | 2020-06-08 | 2020-06-08 | Main control valve body for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212455025U (en) |
-
2020
- 2020-06-08 CN CN202021029448.3U patent/CN212455025U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102728790A (en) | Sand-line iron mould casting process for grey cast iron flywheel housing of diesel engine | |
| CN108405803B (en) | Valve body and processing technology thereof | |
| CN100500330C (en) | Method for casting piston | |
| CN102699280B (en) | Sand mould of precoated sand for casting single piston ring and manufacturing method of sand mould | |
| CN113070447B (en) | Method for casting oil pressure casting | |
| CN201002125Y (en) | Piston blank casting mould | |
| CN212455025U (en) | Main control valve body for engineering machinery | |
| CN102990011A (en) | Casting molding process of large hook body cast steel element for petroleum drilling machine | |
| CN111649020A (en) | Main control valve body for engineering machinery and casting method thereof | |
| CN105665683A (en) | Local high-enhancement cooled piston casting device | |
| CN111940680A (en) | Method for forming nodular cast iron flywheel of medium-high speed high-power diesel engine | |
| CN202779612U (en) | Precoated sand mould used for monomer piston ring casting | |
| CN111550466A (en) | Hydraulic valve body with complex flow channel and casting method thereof | |
| CN115805299A (en) | Vertical casting system and casting method for railway vehicle buffer box body | |
| CN202343917U (en) | Casting mold device of two-liquid bimetal vertical-parted hammer head | |
| CN113404909B (en) | Control valve body casting of excavator | |
| CN116140549A (en) | Lifting box casting process | |
| CN110735955A (en) | Main control valve body used for engineering machinery and sand burying molding die thereof | |
| CN212682365U (en) | Casting device of thermal power ductile iron low-pressure inner cylinder and pouring structure thereof | |
| CN108273964B (en) | A kind of production method for the cylinder jacket improving surface quality | |
| CN103962504A (en) | Casting process for hydraulic main control valve blank | |
| CN215090519U (en) | Casting system of oil pressure foundry goods | |
| CN212455026U (en) | Hydraulic valve body with complex flow channel | |
| CN215033396U (en) | Oil cylinder hole sand core structure of oil pressure casting | |
| CN106493308A (en) | A kind of gate valve foundry goods of low cost without rising head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |