CN213794074U - Vacuum pouring device for production of nodular cast iron pipe fittings - Google Patents

Abstract

The utility model relates to the technical field of cast iron pipe fitting production, in particular to a vacuum casting device for producing nodular cast iron pipe fittings, which can conveniently separate dry sand from the cast iron pipe fittings after casting, improve the work efficiency and reduce the influence on the production efficiency; including the sand box, a pedestal, the evacuation machine, communicating pipe, the filter tip, the multiunit bracing piece, the ring carrier, the multiunit link, the closing plate, two sets of removal racks, two sets of drive gear, two sets of drive shafts, two sets of mounts and two sets of mechanisms of beating, the filter tip is installed in communicating pipe and sand box intercommunication department, all be provided with the sealing layer on ring carrier inner wall and the outer wall, two sets of drive gear suit respectively is fixed to two sets of drive shafts on, two sets of drive shaft both ends are passed two sets of mounts respectively, two sets of drive shafts and two sets of mount rotatable coupling, two sets of drive gear respectively with two sets of removal rack toothing, two sets of mechanisms of beating are installed respectively in two sets of mount top regions.

Description

Vacuum pouring device for production of nodular cast iron pipe fittings

Technical Field

The utility model relates to a technical field of cast iron pipe fitting production especially relates to a vacuum casting device is used in production of nodular cast iron pipe fitting.

Background

As is well known, a nodular cast iron pipe is a pipe fitting which is made by adding a nodulizer of magnesium or rare earth magnesium combined with gold into molten iron before casting to nodulize graphite and reduce stress concentration, so that the pipe fitting has the advantages of high strength, high elongation, impact resistance, corrosion resistance, good sealing property and the like; the inner wall adopts a cement mortar lining, so that the water delivery environment of the pipeline is improved, the water supply capacity is improved, and the energy consumption is reduced; the pipe orifice adopts a flexible interface, and the pipe material has larger elongation rate, so that the flexibility of the pipeline is better, the pipe can work together with soil around the pipeline in the buried pipeline, the stress state of the pipeline is improved, and the reliability of the operation of a pipe network is improved. Therefore, in the water supply industry of China, a nodular cast iron pipe is usually used as a main pipe fitting, in the existing process of pouring the nodular cast iron pipe fitting, the pipe fitting is often cast in a vacuum pouring lost foam mode, the nodular cast iron pipe fitting is poured in a vacuum state, a foam pattern wrapped by dry sand is gasified, a metal liquid replaces the foam pattern, and the cast iron pipe fitting is formed after cooling.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a after the pouring is accomplished, can conveniently separate dry sand and cast iron pipe fitting, improve work efficiency, reduce the vacuum pouring device for nodular cast iron pipe fitting production to production efficiency's influence.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a vacuum casting device for nodular cast iron pipe fitting production comprises a sand box, a base, a vacuumizing machine, a communicating pipe, a filter tip, a plurality of groups of supporting rods, an annular supporting frame, a plurality of groups of connecting frames, a sealing plate, two groups of moving racks, two groups of driving gears, two groups of driving shafts, two groups of fixing frames and two groups of hammering mechanisms, wherein a storage cavity is arranged in the sand box, a casting opening is communicated and arranged at the top of the sand box, a blanking opening is communicated and arranged at the bottom of the sand box, two ends of the plurality of groups of connecting frames are respectively connected with the sealing plate and the bottom of the sand box, two ends of the plurality of groups of supporting rods are respectively connected with the annular supporting frame and the base, the vacuumizing machine is arranged on the base, two ends of the communicating pipe are respectively communicated with the vacuumizing machine and the sand box, the filter tip is arranged at the communication position of the communicating pipe and the sand box, sealing layers are respectively arranged on the inner wall and the outer wall of the annular supporting frame, and the inner walls of the sealing plate and the blanking opening are both contacted with the sealing layers, the two sets of movable racks are mounted on the outer wall of the sand box, the two sets of fixing frames are mounted on the base, the two sets of driving gears are respectively sleeved and fixed on the two sets of driving shafts, two ends of the two sets of driving shafts respectively penetrate through the two sets of fixing frames, the two sets of driving shafts are rotatably connected with the two sets of fixing frames, the two sets of driving gears are respectively meshed with the two sets of movable racks, and the two sets of hammering mechanisms are respectively mounted in the area above the two sets of fixing frames.

Specifically, every group of the two groups of hammering mechanisms all comprises a fixed plate, a moving rod, a half gear, a driving rack, a limiting spring, a limiting block and a hammering block, the fixed plate is installed on the fixing frame, a through hole is formed in the fixed plate, the moving rod penetrates through the through hole, the two ends of the moving rod are respectively connected with the driving rack and the limiting block, the two ends of the limiting spring are respectively connected with the limiting block and the fixed plate, the hammering block is installed on the limiting block, a positioning frame is arranged on the fixed plate, a driving shaft is arranged on the half gear, the two ends of the driving shaft are respectively connected with the positioning frame in a penetrating mode, and the half gear is meshed with the driving rack.

The vacuum-pumping device comprises an arc-shaped discharging plate and a plurality of groups of mounting rods, wherein two ends of each group of mounting rods are connected with the bottom of the arc-shaped discharging plate and the top of a base respectively, and the vacuum-pumping machine is located in the area below the arc-shaped discharging plate.

The device comprises a driving shaft, a driving shaft and two groups of rotating handles, wherein the two groups of rotating handles are arranged on the driving shaft respectively.

Specifically, still include multiunit antiskid seat, multiunit antiskid seat is all installed in the base bottom.

Specifically, still include two sets of holding rings and two sets of fixed hooks, two sets of holding rings and two sets of fixed hooks are all installed on the base lateral wall.

(III) advantageous effects

Compared with the prior art, the utility model provides a vacuum casting device is used in production of nodular cast iron pipe fitting possesses following beneficial effect: filling partial sand material into a sand box, compacting by a beating mechanism, placing a foam mould for pouring into the sand box, placing the foam mould on bottom sand, adding the sand material into the sand box, controlling two groups of beating mechanisms to beat the sand box to compact the sand material, laying a plastic film on the surface of the sand box after the sand material is laid, controlling a pouring cup to control a vacuumizer to start working, vacuumizing the interior of the sand box by the vacuumizer, reducing the sand material to enter the vacuumizer through a filter tip to damage the vacuumizer, fastening and forming dry sand in the sand box after vacuumizing is finished, pouring raw materials into the sand box through a pouring gate after the raw materials are melted, gasifying a foam mould sample, replacing the position of molten metal and forming in a space formed by the foam mould sample, continuing vacuumizing treatment, stopping vacuumizing and returning air after gradual condensation, the external driving equipment controls the two groups of driving shafts to rotate, the two groups of driving shafts drive the driving gears to rotate, the two groups of movable racks move downwards along the two groups of driving gears, so that the sand box and the sealing plate move downwards, dry sand is loosened along with the downward movement of the sand box, and meanwhile, the two groups of cooking large mechanisms are driven to continuously beat the dry sand or directly beat the dry sand on a cast after the pouring is finished, so that the dry sand on the surface of the cast is convenient to drop and separate from the cast, the dry sand can be conveniently separated from a cast iron pipe after the pouring is finished, the working efficiency is improved, and the influence on the production efficiency is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of another view angle of the present invention;

FIG. 3 is a schematic illustration of the fit of the snorkel and filter;

FIG. 4 is a schematic view of a portion of the hammer mechanism;

in the drawings, the reference numbers: 1. a sand box; 2. a base; 3. a vacuum extractor; 4. a communicating pipe; 5. a filter tip; 6. a support bar; 7. an annular support frame; 8. a connecting frame; 9. a sealing plate; 10. moving the rack; 11. a drive gear; 12. a drive shaft; 13. a fixed mount; 14. a sealing layer; 15. a fixing plate; 16. a travel bar; 17. a half gear; 18. driving the rack; 19. a limiting spring; 20. a limiting block; 21. beating the blocks; 22. a positioning frame; 23. an arc-shaped stripper plate; 24. mounting a rod; 25. rotating the handle; 26. an anti-slip seat; 27. a positioning ring; 28. and (5) fixing the hook.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a vacuum casting device for ductile cast iron pipe production comprises a sand box 1, a base 2, a vacuumizer 3, a communicating pipe 4, a filter tip 5, a plurality of groups of support rods 6, an annular support frame 7, a plurality of groups of connecting frames 8, a sealing plate 9, two groups of moving racks 10, two groups of driving gears 11, two groups of driving shafts 12, two groups of fixing frames 13 and two groups of hammering mechanisms, wherein a storage cavity is arranged in the sand box 1, a casting opening is communicated with the top of the sand box 1, a blanking opening is communicated with the bottom of the sand box 1, two ends of the plurality of groups of connecting frames 8 are respectively connected with the sealing plate 9 and the bottom of the sand box 1, two ends of the plurality of groups of support rods 6 are respectively connected with the annular support frame 7 and the base 2, the vacuumizer 3 is arranged on the base 2, two ends of the communicating pipe 4 are respectively communicated with the vacuumizer 3 and the sand box 1, the filter tip 5 is arranged at the communicating pipe 4 and the sand box 1, sealing layers 14 are arranged on the inner wall and the outer wall of the annular supporting frame 7, the sealing plate 9 and the inner wall of the blanking port are in contact with the sealing layers 14, two groups of movable racks 10 are arranged on the outer wall of the sand box 1, two groups of fixing frames 13 are arranged on the base 2, two groups of driving gears 11 are respectively sleeved and fixed on two groups of driving shafts 12, two ends of each group of driving shafts 12 respectively penetrate through the two groups of fixing frames 13, the two groups of driving shafts 12 are rotatably connected with the two groups of fixing frames 13, the two groups of driving gears 11 are respectively meshed with the two groups of movable racks 10, two groups of hammering mechanisms are respectively arranged in the area above the two groups of fixing frames 13, each group of hammering mechanisms in the two groups of hammering mechanisms respectively comprises a fixing plate 15, a movable rod 16, a half gear 17, a driving rack 18, a limiting spring 19, a limiting block 20 and a hammering block 21, the fixing plate 15 is arranged on the fixing frames 13, and through holes are arranged on the fixing plate 15, the vacuum extractor comprises a moving rod 16, a through hole, a limiting block 20, a limiting spring 19, a beating block 21, an arc discharging plate 23, a plurality of groups of mounting rods 24, a driving shaft, a positioning frame 22, a semi-gear 17, two sets of positioning handles 25, two sets of anti-skidding seats 26, two sets of positioning rings 27 and two sets of fixing hooks 28, wherein the moving rod 16 penetrates through the through hole, two ends of the moving rod 16 are respectively connected with the driving rack 18 and the limiting block 20, two ends of the limiting spring 19 are respectively connected with the limiting block 20 and the fixing plate 15, two ends of the driving shaft penetrate through the positioning frame 22 and are rotatably connected with the positioning frame 22, the semi-gear 17 is meshed with the driving rack 18, two ends of the plurality of mounting rods 24 are respectively connected with the bottom of the arc discharging plate 23 and the top of a base 2, the vacuum extractor 3 is positioned in the area below the arc discharging plate 23, the vacuum extractor further comprises the two sets of rotating handles 25, the two sets of rotating handles 25 are respectively mounted on the two sets of anti-skidding driving shafts 12, the plurality of anti-skidding seats 26, the sets of anti-skidding seats 26 are respectively mounted at the bottom of the base 2, the two sets of positioning rings 27 and the fixing hooks 28, two sets of holding rings 27 and two sets of holding hooks are mounted on the side wall of the base 2.

The utility model discloses a vacuum casting device is used in production of nodular cast iron pipe fitting can strengthen the frictional force between base 2 and the contact surface through multiunit antiskid seat 26, reduce the displacement of base 2, improve holistic stability, and can make things convenient for fixed connection a plurality of bases 2 and a plurality of pouring mechanisms through holding ring 27 and fixed hook 28, when it is using, at first fill partial sand material in sand box 1, through beating the mechanism jolt ramming, put the foam mould for pouring into sand box 1, and place on the bed sand, and add sand material to it, control two sets of beating mechanism to beat sand box 1, make the sand material jolt ramming, after the sand material is laid, lay the plastic film on its surface, and mode pouring basin, control evacuation machine 3 to begin work, evacuation machine 3 carries out the evacuation processing to the inside of sand box 1, and can reduce through filter tip 5 that the sand material gets into and causes the damage to evacuation machine 3 in evacuation machine 3, after the vacuumizing is finished, the dry sand in the sand box 1 is tightly molded, at the moment, the pouring is carried out, the raw materials are poured into the sand box 1 through a pouring gate after being melted, the foam pattern is gasified, the molten metal replaces the position of the molten metal and is molded in a space formed by the foam pattern, the vacuumizing treatment is continued, after the raw materials are gradually condensed, the vacuumizing and the air return are stopped, the two groups of rotary handles 25 are rotated through an external driving device or directly and manually, the two groups of driving shafts 12 are controlled to rotate, the two groups of driving shafts 12 drive the driving gears 11 to rotate, the two groups of moving racks 10 move downwards along the two groups of driving gears 11, so that the sand box 1 and the sealing plate 9 move downwards, the dry sand is loosened along with the downward movement of the sand box 1, and simultaneously two groups of cooking mechanisms are driven to continuously beat the dry sand or directly beat on the cast after the pouring, the dry sand on the surface of the cast sand falls and is conveniently separated from the cast sand, and after the pouring is finished, can conveniently separate dry sand and cast iron pipe fitting, improve work efficiency, reduce the influence to production efficiency, when the sand material constantly falls, can play certain effect of blockking and reposition of redundant personnel through arc stripper 23, avoid the sand material directly to drop to evacuation machine 3 on.

When the beating mechanism works, the movable shaft is driven to rotate only by the driving belt, the half gear 17 is driven to rotate continuously by the driving shaft, the half gear 17 is meshed with the driving rack 18 to drive the driving rack 18 to move, the movable rod 16 drives the beating block 21 to move and compress the limiting spring 19, after the half gear 17 is separated from the driving rack 18, the beating block 21 rebounds under the elastic force of the limiting spring 19 to beat on the sand box 1 or a casting, and the operation is repeated continuously to finish repeated beating.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A vacuum casting device for nodular cast iron pipe fitting production is characterized by comprising a sand box (1), a base (2), a vacuum-pumping machine (3), a communicating pipe (4), a filter tip (5), a plurality of groups of supporting rods (6), an annular supporting frame (7), a plurality of groups of connecting frames (8), a sealing plate (9), two groups of moving racks (10), two groups of driving gears (11), two groups of driving shafts (12), two groups of fixing frames (13) and two groups of hammering mechanisms, wherein a storage cavity is arranged in the sand box (1), a casting port is communicated and arranged at the top of the sand box (1), a blanking port is communicated and arranged at the bottom of the sand box (1), two ends of the plurality of groups of connecting frames (8) are respectively connected with the sealing plate (9) and the bottom of the sand box (1), two ends of the plurality of groups of supporting rods (6) are respectively connected with the annular supporting frame (7) and the base (2), the vacuum-pumping machine (3) is arranged on the base (2), the two ends of the communicating pipe (4) are respectively communicated with the vacuum-pumping machine (3) and the sand box (1), the filter tip (5) is arranged at the communicated position of the communicating pipe (4) and the sand box (1), the inner wall and the outer wall of the annular supporting frame (7) are respectively provided with a sealing layer (14), the sealing plate (9) and the inner wall of the blanking port are respectively contacted with the sealing layer (14), the two groups of movable racks (10) are respectively arranged on the outer wall of the sand box (1), the two groups of fixing frames (13) are respectively arranged on the base (2), the two groups of driving gears (11) are respectively sleeved and fixed on the two groups of driving shafts (12), the two ends of the two groups of driving shafts (12) respectively penetrate through the two groups of fixing frames (13), the two groups of driving shafts (12) are rotatably connected with the two groups of fixing frames (13), and the two groups of driving gears (11) are respectively meshed with the two groups of movable racks (10), the two groups of hammering mechanisms are respectively arranged in the area above the two groups of fixing frames (13).

2. The vacuum casting device for producing ductile iron pipe fittings according to claim 1, wherein each of the two sets of hammering mechanisms comprises a fixing plate (15), a moving rod (16), a half gear (17), a driving rack (18), a limiting spring (19), a limiting block (20) and a hammering block (21), the fixing plate (15) is mounted on the fixing frame (13), a through hole is formed on the fixing plate (15), the moving rod (16) passes through the through hole, both ends of the moving rod (16) are respectively connected with the driving rack (18) and the limiting block (20), both ends of the limiting spring (19) are respectively connected with the limiting block (20) and the fixing plate (15), the hammering block (21) is mounted on the limiting block (20), a positioning frame (22) is arranged on the fixing plate (15), and a driving shaft is arranged on the half gear (17), both ends of the driving shaft penetrate through the positioning frame (22) and are rotatably connected with the positioning frame (22), and the half gear (17) is meshed with the driving rack (18).

3. The vacuum casting device for producing the ductile iron pipe fitting according to claim 2, further comprising an arc-shaped discharging plate (23) and a plurality of sets of mounting rods (24), wherein two ends of the plurality of sets of mounting rods (24) are respectively connected with the bottom of the arc-shaped discharging plate (23) and the top of the base (2), and the vacuum extractor (3) is positioned in the area below the arc-shaped discharging plate (23).

4. The vacuum casting apparatus for the production of spheroidal graphite cast iron pipe according to claim 3, further comprising two sets of rotating handles (25), wherein the two sets of rotating handles (25) are respectively mounted on the two sets of driving shafts (12).

5. The vacuum casting device for producing ductile iron pipe fittings according to claim 4, further comprising a plurality of sets of anti-slip seats (26), wherein the plurality of sets of anti-slip seats (26) are all installed at the bottom of the base (2).

6. The vacuum casting device for producing ductile iron pipe fittings according to claim 5, further comprising two sets of positioning rings (27) and two sets of fixing hooks (28), wherein the two sets of positioning rings (27) and the two sets of fixing hooks are both mounted on the side wall of the base (2).

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