Sand mixer for casting
Technical Field
The utility model relates to a roller mill technical field especially relates to a roller mill is used in casting.
Background
The sand mixer is a device which can uniformly mix all components in the molding sand and effectively coat the adhesive on the surface of the sand grains. The sand mixer is a main device for mixing foundry sand processing molding sand and is also a key device for obtaining qualified molding sand.
Some of the existing sand mixers are directly added with molding sand, adhesives and water to be stirred and mixed in the use process, the mode can not control the adding amount of various materials, the stirring can not be carried out quickly, the manpower is consumed to observe constantly, the manpower and the time are wasted, the existing sand mixers can generate fine particles to float in the air without being processed when the molding sand is added, the sand mixers are easily sucked into the body by on-site personnel, and the influence on the health is generated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects that the prior art cannot control the amount of molding sand and has no processing device, and providing a sand mixer for casting.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a sand mixer for casting comprises a mixing drum, wherein the lower surface of the mixing drum is communicated with a discharge port, a switch valve is arranged inside the discharge port, a motor is fixedly arranged on the upper surface of the mixing drum, an output shaft of the motor is coaxially connected with a rotating shaft, a stirring paddle is fixedly arranged on the outer surface of the rotating shaft, an intermittent feeding assembly is arranged on the upper surface of the mixing drum, a fan is fixedly arranged on the upper surface of the mixing drum, an air inlet of the fan is communicated with a connecting pipe, the lower end of the connecting pipe is communicated with the inside of the mixing drum, a filter screen is fixedly arranged at the communication position, a reciprocating assembly is arranged inside the mixing drum, the upper surface of the mixing drum is communicated with a molding sand port, the upper surface of the mixing drum is communicated with a bonding agent port, and the upper surface of the mixing drum is communicated with a water filling port;
the intermittent feeding assembly comprises a belt pulley group, one end of the belt pulley group is sleeved on the outer surface of the rotating shaft, a connecting shaft is inserted into the other end of the belt pulley group, a half gear is sleeved on the outer surface of the connecting shaft, the outer surface of the half gear is connected with a full gear in a meshed mode, a power shaft is fixedly installed on the lower surface of the full gear, the lower end of the power shaft penetrates through the upper surface of the stirring barrel and extends into the stirring barrel, the power shaft is rotatably connected with the stirring barrel, a cross baffle is fixedly installed at the lower end of the power shaft, and the surface of the cross baffle is attached to the molding sand port;
reciprocating assembly is including cup jointing the cam at the pivot surface, the surface sliding connection of cam has the concave plate, the fixed surface of concave plate installs the round bar, the surface cover of round bar is equipped with the stopper, the surface cover of round bar is equipped with the spring, the one end fixedly connected with scraper blade of round bar, and laminate each other between scraper blade and the filter screen.
Preferably, the lower end of the rotating shaft penetrates through the upper surface of the stirring barrel and extends to the inside, and the stirring paddle is arranged inside the stirring barrel.
Preferably, the lower end of the connecting shaft penetrates through the belt pulley group, and the lower end of the connecting shaft is rotatably connected with the upper surface of the stirring barrel.
Preferably, the surface of the half gear is provided with one eighth of the surface of the body, and each circle of the half gear can only drive the full gear to rotate one eighth.
Preferably, the limiting block is fixedly connected with the inner top surface of the stirring barrel, and the limiting block is in sliding fit with the round rod.
Preferably, one end of the spring is fixedly connected with the outer surface of the concave plate, and the other end of the spring is fixedly connected with the outer surface of the limiting block.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a set up intermittent type feed subassembly for when the roller mill stirs, the volume that makes each time add through the control of this subassembly all is equal, thereby has practiced thrift the manpower, increases work efficiency.
2. The utility model discloses a set up reciprocal subassembly for gas to in the agitator carries out filterable filter screen and can obtain clearing up, thereby can guarantee that the inside exhaust air of agitator can obtain filtering, has reached the healthy purpose of protection staff.
The utility model discloses a mutual cooperation between each part for at the roller mill during operation, can control the volume of the molding sand of adding each time, can practice thrift the manpower and accelerate work efficiency, and can also filter the outside exhaust air of agitator, protect staff's health.
Drawings
Fig. 1 is a schematic front view of a sand mixer for casting according to the present invention;
fig. 2 is a schematic front sectional view of a sand mixer for casting according to the present invention;
FIG. 3 is a schematic cross-sectional view of an intermittent feeding assembly of a sand mixer for casting according to the present invention;
fig. 4 is a schematic sectional view of a reciprocating assembly of a sand mixer for casting according to the present invention.
In the figure: 1. a stirring barrel; 2. a discharge port; 3. a motor; 31. a rotating shaft; 32. a stirring paddle; 4. an intermittent feed assembly; 41. a pulley set; 42. a connecting shaft; 43. a half gear; 44. all-gear; 45. a power shaft; 46. a cross baffle plate; 5. a fan; 51. a connecting pipe; 52. filtering with a screen; 6. a reciprocating assembly; 61. a cam; 62. a concave plate; 63. a round bar; 64. a limiting block; 65. a spring; 66. a squeegee; 7. a molding sand material port; 8. a binder port; 9. a water injection port.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example one
Referring to fig. 1-4, a sand mixer for casting comprises a mixing tank 1, a discharge port 2 is communicated with the lower surface of the mixing tank 1, a switch valve is arranged inside the discharge port 2 to facilitate discharging of mixed materials, a motor 3 is fixedly arranged on the upper surface of the mixing tank 1 to provide a power source for the device, an output shaft of the motor 3 is coaxially connected with a rotating shaft 31, a mixing paddle 32 is fixedly arranged on the outer surface of the rotating shaft 31 to mix various materials in the tank, an intermittent feeding assembly 4 is arranged on the upper surface of the mixing tank 1, a fan 5 is fixedly arranged on the upper surface of the mixing tank 1 to suck air in the tank, an air inlet of the fan 5 is communicated with a connecting pipe 51, the lower end of the connecting pipe 51 is communicated with the inside of the mixing tank 1, a filter screen 52 is fixedly arranged at the communicating position to mix molding sand particles contained in the air, a reciprocating assembly 6 is arranged inside the mixing tank 1, the upper surface of the stirring barrel 1 is communicated with a molding sand material port 7 to facilitate the molding sand to enter the barrel, the upper surface of the stirring barrel 1 is communicated with a binder material port 8 to facilitate the binder to enter the barrel, and the upper surface of the stirring barrel 1 is communicated with a water filling port 9;
the intermittent feeding assembly 4 comprises a belt pulley group 41, one end of which is sleeved on the outer surface of the rotating shaft 31, in order to drive a half gear 43 to rotate, a connecting shaft 42 is inserted into the other end of the belt pulley group 41, the belt pulley group 41 is fixed, the outer surface of the connecting shaft 42 is sleeved with the half gear 43, the outer surface of the half gear 43 is meshed with a full gear 44 and is matched with the half gear 43 for use, a power shaft 45 is fixedly installed on the lower surface of the full gear 44, the lower end of the power shaft 45 penetrates through the upper surface of the stirring barrel 1 and extends into the stirring barrel 1, the power shaft 45 is rotatably connected with the stirring barrel 1, a cross baffle 46 is fixedly installed at the lower end of the power shaft 45 in order to fix the position of the full gear 44, the molding sand port 7 is sealed, and the surface of the cross baffle 46 is attached to the molding sand port 7;
reciprocal subassembly 6 is including cup jointing the cam 61 at the pivot 31 surface, in order to realize reciprocal effect, the surface sliding connection of cam 61 has notch board 62, prevent to appear the dislocation when rotating with cam 61 and drop, the fixed surface of notch board 62 installs round bar 63, the surface cover of round bar 63 is equipped with stopper 64, inject the removal route of round bar 63, fix round bar 63 simultaneously, the surface cover of round bar 63 is equipped with spring 65, use with cam 61 cooperation, the one end fixedly connected with scraper blade 66 of round bar 63, and laminate each other between scraper blade 66 and the filter screen 52.
In this embodiment, when the stirring is started, the motor 3 and the fan 5 are started first, then the material to be used is added through the material hole at one time, the fan 5 discharges the gas in the stirring barrel, the sucked gas is discharged through the filtering of the filter screen 52, when the motor 3 is started, the rotating shaft 31 coaxially connected with the motor is driven to start rotating, so as to drive the stirring paddle 32 fixedly installed on the rotating shaft 31 to start stirring the material in the stirring barrel 1, and simultaneously, the half gear 43 sleeved on the outer surface of the connecting shaft 42 is driven to start rotating through the pulley group 41, so that the full gear 44 engaged with the motor starts rotating, as the half gear 43 rotates for one circle, the full gear 44 is driven to rotate for one eighth, so that the blocked molding sand outlet 7 is opened, and the molding sand enters the stirring barrel 1, when the half gear 43 rotates for the second circle, the full gear 44 drives the cross baffle 46 to block the molding sand outlet 7 again, realize intermittent type nature's feed, thereby can make the material stirring more even, save time, in pivot 31 pivoted, the cam 61 that its surface cup jointed also rotates in step, then can promote concave plate 62 to begin to remove gradually at the rotation in-process, drive round bar 63 and begin to remove and compression spring 65, round bar 63 removes and then can drive scraper blade 66 and begin to remove and clear up the surface of filter screen 52, when cam 61 rotates the half-turn and continues to rotate, concave plate 62 can begin to resume the normal position under spring 65's effect, and drive scraper blade 66 and resume the normal position, through reciprocating's removal, thereby to the reciprocal clearance of filter screen 52.
Example two
Referring to fig. 1-4, in this embodiment, basically the same as the first embodiment, it is more preferable that the lower end of the rotating shaft 31 penetrates through the upper surface of the stirring barrel 1 and extends to the inside, and the stirring paddle 32 is disposed inside the stirring barrel 1, in order to stir the mixture of the molding sand and the adhesive added inside the stirring barrel 1, the lower end of the connecting shaft 42 penetrates through the pulley set 41, and the lower end of the connecting shaft 42 is rotatably connected with the upper surface of the stirring barrel 1 to fix the pulley set 41, so as to prevent the occurrence of a failure during the rotation process, the teeth on the surface of the half gear 43 occupy one eighth of the main body, and each circle can only drive the full gear 44 to rotate one eighth, and by rotating one eighth, the cross baffle 46 is driven to intermittently open and close the molding sand feed opening 7, so as to control the amount of the molding sand added, the limiting block 64 is fixedly connected with the inner top surface of the stirring barrel 1, and the limiting block 64 is in sliding fit with the round rod 63, so that the round rod 63 is limited in moving path and fixed position, one end of the spring 65 is fixedly connected with the outer surface of the concave plate 62, and the other end of the spring 65 is fixedly connected with the outer surface of the limiting block 64.
The utility model discloses a mutual cooperation between each part for at the roller mill during operation, can control the volume of the molding sand of adding each time, can practice thrift the manpower and accelerate work efficiency, and can also filter the outside exhaust air of agitator, protect staff's health
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.