CN212216976U

CN212216976U - Sand outlet door device of sand mixer for resin sand

Info

Publication number: CN212216976U
Application number: CN202020960793.2U
Authority: CN
Inventors: 虞峰; 殷荣
Original assignee: Suzhou Sunshine Machinery Manufacture Co ltd
Current assignee: Suzhou Sunshine Machinery Manufacture Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-12-25
Anticipated expiration: 2030-05-29

Abstract

The utility model relates to a sand outlet door device of a sand mixer for resin sand, which comprises a frame and a hopper erected on the frame, wherein the lower end of the hopper is provided with a sand outlet, the sand outlet is provided with a sand outlet door, the sand outlet door is in a circular arc shape protruding downwards, the cross section of the sand outlet door is in a circular arc shape, the sand outlet door and the sand outlet door are concentrically arranged, and the sand outlet door is abutted against a pipe orifice of the sand outlet; the lower end of the hopper is provided with two connecting shafts which are arranged symmetrically about the center of the width direction of the frame, and connecting plates extend upwards from two sides of the sand outlet door close to the connecting shafts and are rotatably connected with the connecting shafts; the rack is provided with a driving assembly, the driving assembly comprises a driving motor arranged on the rack, a driving gear coaxially arranged with a rotating shaft of the driving motor, a connecting gear arranged on the connecting plate, and a chain connecting the driving gear and the connecting gear, and the connecting gear and the connecting shaft are coaxially arranged. The utility model discloses have normal switching and go out the sand door, promote the effect of the stability of roller mill work.

Description

Sand outlet door device of sand mixer for resin sand

Technical Field

The utility model belongs to the technical field of the technique of roller mill equipment and specifically relates to a sand outlet door device of roller mill for resin sand is related to.

Background

The resin sand is molding sand or core sand in which synthetic resin is used as a binder of sand grains. The sand is added with a resin and a hardening agent, wherein the resin is cured by an irreversible crosslinking reaction by the hardening agent, thereby imparting necessary strength to the mold or core.

The sand used for casting the resin sand is mixed with core sand in a certain proportion and is used after being uniformly mixed in the sand mixer, the hopper 2 of the existing sand mixer is a conical hopper, as shown in figure 1, a sand outlet door 7 is arranged at a sand outlet 6 of the conical hopper, and the sand outlet door 7 is driven by a hydraulic cylinder 26 outside the hopper 2 to open or close the sand outlet door 7, so that the mixed sand material is discharged.

The prior art described above has the following drawbacks: the sand outlet 6 of the hopper 2 is opened by the hydraulic cylinder driving sand outlet door 7, the resin sand drops to the collecting device from the sand outlet 6 of the sand mixer hopper 2, when the resin sand in the hopper 2 is scattered from a high place to a low place, the splashing condition can appear on part of the resin sand, resin with high viscosity is added into the resin sand, the splashing resin sand can be adhered to the telescopic rod of the hydraulic cylinder 26, thereby the normal operation of the hydraulic cylinder 26 can be influenced, the abnormal opening and closing of the sand outlet door 7 can be caused, and the sand outlet stability of the sand mixer hopper 2 can be influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a sand outlet door device of roller mill for resin sand, it has normal switching sand outlet door, promotes the advantage of roller mill job stabilization nature.

The above object of the present invention can be achieved by the following technical solutions: a sand outlet door device of a sand mixer for resin sand comprises a frame and a hopper erected on the frame, wherein a sand outlet is formed in the lower end of the hopper, a sand outlet door for opening and closing the sand outlet is arranged at the sand outlet, the sand outlet is in the shape of a circular arc protruding downwards, the section of the sand outlet door is in the shape of a circular arc, and the sand outlet door are concentrically arranged;

the lower end of the hopper is provided with two connecting shafts which are arranged symmetrically about the center of the width direction of the frame, and connecting plates extend upwards from two sides of the sand outlet door close to the connecting shafts and are rotatably connected with the connecting shafts;

be equipped with in the frame and be used for driving connecting plate pivoted drive assembly, drive assembly including install in driving motor in the frame, with the coaxial drive gear that sets up of driving motor's pivot, set up connecting gear on the connecting plate, connect drive gear and connecting gear's chain, connecting gear and the coaxial setting of connecting axle.

By adopting the technical scheme, when the hopper discharges sand, the driving motor drives the driving gear, the driving gear is meshed with the chain to drive the connecting gear to rotate, the connecting plate is further driven to rotate along the circumferential direction of the connecting shaft, the sand discharging door slides along the arc shape of the sand discharging opening until the sand discharging door is completely opened, and sand falls into the collecting device from the sand discharging opening; whole sanding process, the resin sand can persist partly and bond in sand outlet department, the sand outlet door has the shearing force of downward sloping to the resin sand of sand outlet department under the rotation of connecting axle, thereby the resin sand that will bond in sand outlet department is cuted down, the resin sand that unloads from hopper department produces and splashes, the resin sand adhesion that splashes is on chain and connecting gear, the chain is the cooperation in tooth and chain hole with connecting gear's meshing, the resin sand of adhesion does not influence drive assembly's normal function, thereby be favorable to sand outlet door's normal switching, promote the stability of roller mill work.

The present invention may be further configured in a preferred embodiment as: the connecting plate is provided with a connecting wheel, the connecting wheel is coaxially sleeved on the connecting shaft, and a bearing is arranged between the connecting wheel and the connecting shaft.

Through adopting above-mentioned technical scheme, the fifth wheel rotates along the connecting axle under the drive of bearing, and the protection fifth wheel does not contact with the connecting axle to reduce fifth wheel and connecting axle pivoted coefficient of friction, reduce the wearing and tearing between fifth wheel and the connecting axle, the life of extension fifth wheel is favorable to reduction in production cost.

The present invention may be further configured in a preferred embodiment as: the connecting shaft is provided with a rotating groove along the circumferential direction, and the inner side wall of the connecting wheel is provided with a rotating ring which is in inserted connection with the rotating groove.

Through adopting above-mentioned technical scheme, the fixed connection wheel is favorable to the fifth wheel pivoted stability in connecting axle axial position to improve the stability that the resin sand dropped, reduce the scope that the resin sand splashes, further reduce the resin sand and splash to chain, connecting gear on, improve the meshing rate of chain and connecting gear, stabilize the normal switching of sand outlet door and sand outlet, promote the stability of roller mill work.

The present invention may be further configured in a preferred embodiment as: the connecting plate includes the hang plate of being connected with the sand outlet door, with hang plate fixed connection's fixed plate, the hang plate upwards extends along the edge slope of sand outlet door, the fixed plate sets up the top at the hang plate, the hang plate is equipped with two, fixed plate and fifth wheel fixed connection.

Through adopting above-mentioned technical scheme, according to the setting of hang plate and fixed plate to the resin sand separation that will sputter is within hang plate, fixed plate and sand outlet door, and further reduction resin sand sputters to chain, connecting gear on, further improves the meshing rate of chain and connecting gear, thereby is favorable to sand outlet door normal switching sand outlet, promotes the stability of roller mill work.

The present invention may be further configured in a preferred embodiment as: the connecting gear is detachably connected with the connecting wheel, and a fixing piece is arranged between the connecting gear and the connecting wheel.

Through adopting above-mentioned technical scheme, the mounting will be connected the gear and fix on the fifth wheel, is convenient for simultaneously with trading connection gear, effectively improves the meshing of connecting gear and chain to effectively improve sand outlet door pivoted stability, sand outlet door can be normal switching, promote the stability of roller mill work.

The present invention may be further configured in a preferred embodiment as: the rack is provided with a mounting block, the mounting block is erected on the rack, the mounting block is provided with a placing plate, and the placing plate is fixedly connected with the driving motor.

Through adopting above-mentioned technical scheme, further fixed driving motor's position to the stable distance between drive assembly and the sand outlet is ensured to fixed drive gear's position, further reduces resin sand and sputters to chain, connecting gear on, improves drive assembly job stabilization nature, thereby is favorable to the switching of sand outlet door.

The present invention may be further configured in a preferred embodiment as: the sand outlet door covers the sand outlet, and the area of the sand outlet door is larger than the opening area of the sand outlet.

By adopting the technical scheme, the sand outlet is completely covered by the sand outlet door, so that the resin sand is prevented from permeating from the sand outlet of the hopper of the sand mixer, and the utilization rate of the resin sand is improved; the sand outlet door protects the driving motor, resin sand sputtered in a blocking mode is bonded on the driving motor, the service life of the driving motor is prolonged, and the production cost of an enterprise is reduced.

The present invention may be further configured in a preferred embodiment as: and polytetrafluoroethylene layers are arranged on the surfaces of the sand outlet door, the connecting gear and the chain.

Through adopting above-mentioned technical scheme, the polytetrafluoroethylene layer has high lubricated non-stick nature, prevents that the resin sand that sputters from bonding on sand outlet door, connecting gear, chain, improves the meshing rate of chain and connecting gear to the normal switching of drive sand outlet door that can be stable promotes sand mixer job stabilization nature.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the sand outlet door, the connecting shaft and the driving assembly are arranged, so that the sand outlet door can be normally opened and closed, and the working stability of the sand mixer is improved;

2. through the coaxial arrangement of the sand outlet and the sand outlet door, the sand outlet door has downward-inclined shearing force on the resin sand material bonded on the wall of the sand outlet, so that the resin sand bonded on the sand outlet is sheared, the normal opening and closing of the sand outlet door are further improved, and the working stability of the sand mixer is improved;

3. through the setting of fifth wheel, rotation groove and rotating ring, fixed connection wheel is favorable to the fifth wheel pivoted stability in connecting axle axial position to improve the stability that the resin sand dropped, reduce the scope that the resin sand spattered, further reduce the resin sand and splash to chain, connecting gear on, improve the meshing rate of chain and connecting gear, stabilize the normal switching of sand outlet door and sand outlet, promote the stability of roller mill work.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the background art;

FIG. 2 is a schematic structural view of the whole of the present embodiment;

FIG. 3 is a cross-sectional view of the hopper of the present embodiment;

FIG. 4 is a schematic view of the connection structure between the hopper and the driving assembly in the present embodiment;

FIG. 5 is a partially enlarged view of part A in this example 4

Fig. 6 is a schematic view of a connection structure between the connection plate and the hopper in the present embodiment.

In the figure, 1, a frame; 2. a hopper; 3. placing the plate; 4. a buffer column; 5. a sand outlet pipe; 6. a sand outlet; 7. a sand outlet door; 8. a connecting plate; 9. an inclined plate; 10. a fixing plate; 11. a connecting shaft; 12. a connecting wheel; 13. a bearing; 14. connecting holes; 15. connecting a screw rod; 16. a connecting rod; 17. a rotating groove; 18. a rotating ring; 19. mounting blocks; 20. mounting a plate; 21. a drive assembly; 22. a drive motor; 23. a drive gear; 24. a connecting gear; 25. a chain; 26. and a hydraulic cylinder.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Examples

Referring to fig. 2, in order to disclose the sand outlet device of the sand mixer for the resin sand, the sand outlet device comprises a frame 1 and a hopper 2 erected on the frame 1, wherein the hopper 2 is a conical hopper, placing plates 3 are correspondingly arranged on two side walls of the hopper 2, the length direction of the placing plates 3 is arranged along the length direction of the frame 1, three buffer columns 4 are arranged between each placing plate 3 and the corresponding frame 1, and the buffer columns 4 are made of elastic materials, such as rubber; three buffer column 4 is along the length direction evenly distributed who places board 3, and hopper 2 is when the compounding, and buffer column 4 is used for alleviating hopper 2 to the pressure of frame 1, prolongs the life of hopper 2.

Referring to fig. 2 and 3, the upper end of the hopper 2 is a feeding end, the lower end of the hopper 2 is communicated with a sand outlet pipe 5, and the sand outlet pipe 5 and the hopper 2 are coaxially arranged; go out sand pipe 5 and keep away from the one end of hopper 2 and seted up sand outlet 6, sand outlet 6 department is equipped with the sand outlet door 7 that is used for switching sand outlet 6, and sand outlet 6 is downward bellied circular-arcly, and sand outlet door 7 cross-section is arc, and sand outlet 6, sand outlet door 7's cross-section arc sets up with one heart, and the radius of sand outlet door 7 inside wall equals the orificial radius of sand outlet 6, and sand outlet door 7 slides along the orificial radian of sand outlet 6.

Referring to fig. 2 and 3, in order to prevent the resin sand from overflowing from the sand outlet 6, the sand outlet door 7 covers the sand outlet 6; the area of the sand outlet door 7 is larger than the opening area of the sand outlet 6.

Referring to fig. 4, the lower extreme of hopper 2 is equipped with connecting axle 11, two connecting axles 11 are coaxial, the axial of two connecting axles 11 is the same with the diameter direction of sand outlet pipe 5, sand outlet door 7 upwards extends near the both sides of connecting axle 11 has connecting plate 8, connecting plate 8 includes hang plate 9 and fixed plate 10, hang plate 9 upwards extends along the edge slope of sand outlet door 7, hang plate 9 is provided with two, the one end of fixed plate 10 keeps away from the one end fixed connection of sand outlet door 7 with hang plate 9, fixed plate 10 upwards extends and two fixed plates 10 set up respectively in the both sides of corresponding connecting axle 11. The two fixing plates 10 are respectively connected with the two connecting shafts 11 in a rotating way.

Referring to fig. 4, the frame 1 is provided with a driving assembly 21 for driving the sand outlet door 7. The driving assembly 21 comprises a driving motor 22, a driving gear 23, a connecting gear 24 and a chain 25; an installation block 19 is erected on one side of the frame 1, which is positioned on the hopper 2, along the width direction of the frame 1, two ends of the installation block 19 are fixedly connected with the side wall of the frame 1, an installation plate 20 is horizontally installed on the installation block 19, a driving motor 22 is fixedly installed on the installation plate 20, and a driving gear 23 is coaxially installed at the end part of a rotating shaft of the driving motor 22; connecting gear 24 installs on the fixed plate 10 that is located the frame homonymy with drive gear 23, and connecting gear 24 sets up with connecting axle 11 is coaxial, and chain 25 cover is established on drive gear 23 and connecting gear 24, and chain 25 all sets up with drive gear 23, the meshing of connecting gear 24 to the normal switching of drive sand outlet door 7 that can be stable promotes the stability of roller mill work.

Referring to fig. 5 and 6, in order to reduce the friction coefficient of the fixing plate 10 with the connecting shaft, the wear of the fixing plate is reduced; a connecting wheel 12 is arranged on the fixing plate, the connecting wheel 12 is coaxially sleeved on the connecting shaft 11, a bearing 13 is arranged between the connecting wheel 12 and the connecting shaft 11, the bearing 13 and the connecting wheel 12 are coaxially arranged, and the diameter size of the outer side of the bearing 13 is equal to the diameter size of the inner side hole of the connecting wheel 12; a rotating groove 17 is circumferentially formed in one end, away from the hopper 2, of the connecting shaft 11, a rotating ring 18 is arranged on the side wall, facing the axis of the connecting wheel 12, of one side, close to the connecting shaft 11, of the connecting wheel 12, a side, provided with the rotating ring 18, of the connecting wheel 12 is sleeved in the rotating groove 17, and the bearing 13 is pressed into an inner side hole of the connecting wheel 12; connecting holes 14 are formed in one ends, far away from the hopper 2, of the two connecting shafts 11, connecting screws 15 are arranged in the connecting holes 14 close to the connecting gears 24, so that the bearings 13 are fixed in inner holes of the connecting wheels 12, and the connecting gears 24 are installed on the connecting wheels 12 on the fixing plates 10 on the same side of the rack 1 as the driving gear 23; wherein, all seted up the fixed orifices on fifth wheel 12 and the connecting gear 24, be equipped with the pin in the fixed orifices to connecting gear 24 fixed mounting is on fifth wheel 12, and connecting gear 24 can dismantle with fifth wheel 12 and be connected, the installation in earlier stage of being convenient for and the maintenance in later stage. A connecting rod 16 penetrates through the connecting hole 14 far away from the connecting gear 24, and a disc handle is arranged on one side of the connecting rod 16 far away from the connecting shaft 11, so that the connecting rod 16 is convenient for workers to install.

Referring to fig. 4, the surfaces of the sand outlet door 7, the connecting gear 24 and the chain 25 are all provided with polytetrafluoroethylene layers, so that sputtered resin sand is prevented from being bonded on the sand outlet door 7, the connecting gear 24 and the chain 25, the meshing rate of the chain 25 and the connecting gear 24 is improved, the sand outlet door 7 can be stably driven to be normally opened and closed, and the working stability of the sand mixer is improved.

The implementation principle of the above embodiment is as follows: starting the driving motor 22 to drive the rotating shaft of the driving motor 22 to rotate, so that the driving chain 25 drives the connecting wheel 12, the connecting wheel 12 rotates along the circumferential direction of the connecting shaft 11, and the sand outlet door 7 slides along the radian of the pipe orifice of the sand outlet 6;

when resin sand is adhered to the pipe orifice of the sand outlet 6, the side wall of the sand outlet door 7 is driven by the driving assembly 21 to provide a downward-inclined shearing force for the resin sand on the pipe orifice of the sand outlet 6, so that the resin sand on the pipe orifice of the sand outlet 6 is sheared off, the normal opening and closing of the sand outlet door 7 are facilitated, and the working stability of the sand mixer is improved;

for the setting of traditional sand outlet door 7 device, the utility model discloses a drive sand outlet door 7 remove drive assembly, resin sand produces when hopper 2 is unloaded and splashes, the resin sand adhesion that splashes is on chain 25 and connecting gear 24, and the meshing of chain 25 and connecting gear 24 is the cooperation in tooth and chain hole, and the resin sand of adhesion does not influence drive assembly's normal function to be favorable to sand outlet door 7's normal switching, promote the stability of roller mill work.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a sand outlet door device of roller mill for resin sand, includes frame (1) and erects in hopper (2) on frame (1), the lower extreme of hopper (2) is equipped with sand outlet (6), sand outlet (6) department is equipped with sand outlet door (7) that are used for switching sand outlet (6), its characterized in that: the sand outlet (6) is in the shape of a circular arc protruding downwards, the section of the sand outlet door (7) is in the shape of a circular arc, and the sand outlet (6) and the sand outlet door (7) are concentrically arranged;

the lower end of the hopper (2) is provided with two connecting shafts (11), the two connecting shafts (11) are symmetrically arranged relative to the center of the width direction of the rack (1), two sides of the sand outlet door (7) close to the connecting shafts (11) extend upwards to form connecting plates (8), and the connecting plates (8) are rotatably connected with the connecting shafts (11);

be equipped with on frame (1) and be used for driving connecting plate (8) pivoted drive assembly (21), drive assembly (21) including install in driving motor (22) in frame (1), with drive gear (23) of the coaxial setting of pivot of driving motor (22), set up connecting gear (24) on connecting plate (8), connect chain (25) of drive gear (23) and connecting gear (24), connecting gear (24) and connecting axle (11) coaxial setting.

2. The sand gate device of a sand mixer for resin sand according to claim 1, characterized in that: the connecting plate is characterized in that a connecting wheel (12) is arranged on the connecting plate (8), the connecting wheel (12) is coaxially sleeved on the connecting shaft (11), and a bearing (13) is arranged between the connecting wheel (12) and the connecting shaft (11).

3. The sand outlet device of the sand mixer for the resin sand according to claim 2, wherein a rotating groove (17) is formed in the connecting shaft (11) along the circumferential direction, a rotating ring (18) is arranged on the inner side wall of the connecting wheel (12), and the rotating ring (18) is in inserted fit with the rotating groove (17).

4. The sand gate device of a sand mixer for resin sand according to claim 1, characterized in that: connecting plate (8) include hang plate (9) be connected with sand outlet door (7), fixed plate (10) with hang plate (9) fixed connection, hang plate (9) upwards extend along the edge slope of sand outlet door (7), fixed plate (10) set up the top at hang plate (9), hang plate (9) are equipped with two, fixed plate (10) and fifth wheel (12) fixed connection.

5. The sand door discharging device of a sand mixer for resin sand according to claim 4, wherein the connecting gear (24) is detachably connected with the connecting wheel (12), and a fixing member is arranged between the connecting gear (24) and the connecting wheel (12).

6. The sand gate device of a sand mixer for resin sand according to claim 1, characterized in that: the mounting device is characterized in that a mounting block (19) is arranged on the rack (1), the mounting block (19) is erected on the rack (1), a placing plate (3) is mounted on the mounting block (19), and the placing plate (3) is fixedly connected with a driving motor (22).

7. The sand gate device of a sand mixer for resin sand according to claim 1, characterized in that: the sand outlet door (7) covers the sand outlet (6), and the area of the sand outlet door (7) is larger than the opening area of the sand outlet (6).

8. The sand gate device of a sand mixer for resin sand according to claim 1, characterized in that: and polytetrafluoroethylene layers are arranged on the surfaces of the sand outlet door (7), the connecting gear (24) and the chain (25).