Screening structure for shakeout machine

Abstract

The utility model discloses a screening structure for a shakeout machine, and relates to the technical field of casting equipment. The screening machine comprises a screening box, the screening box is made of one of soft iron and silicon steel, a conductive winding is arranged outside the screening box, a motor is arranged inside the screening box, a flow guide cover is arranged above the motor, and scraping strips are arranged below the motor in a bilateral symmetry mode. The screening box generates magnetism through the conductive winding to magnetically absorb and collect scrap iron, dust is collected and filtered through cooperation of the fan and the dust filtering plate, the dust is prevented from polluting the operation environment, and the problems that in the prior art, as the scrap iron is adsorbed by the magnet, the space for molding sand to pass through in the material passing opening is gradually reduced, and the production efficiency is high are solved. Meanwhile, the collected scrap iron and molding sand are inconvenient to take out, and in the prior art, a large amount of dust is likely to be generated in the using process, so that the operation environment is polluted.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting equipment, in particular to a screening structure for a shakeout machine. Background Art

[0002] As one of the important equipment in the sand casting production process, the sand shakeout machine uses vibration and impact to separate the molding sand and casting in the mold. It can effectively separate the molding sand from the mold, making it easier to recover and reuse the molding sand. In the process of sand recovery, the molding sand is often mixed with some iron filings, which requires screening of the molding sand and iron filings.

[0003] After searching, the authorization announcement number CN213437125U and the authorization announcement date 2021.06.15 disclose a screening machine for a vibrating sand falling machine, comprising a box body, the upper end of the box body is provided with a feed port connected to it, the inner side wall of the box body is fixedly connected to a support frame by bolts, the upper end of the support frame is welded with a sleeve, the support column is sleeved in the sleeve, and two support columns are provided, and a screen is fixedly connected between the two support columns by bolts, and a screening frame is provided below the screen, and several material passages are provided at the lower end of the screening frame, and magnets are provided in the material passages; the beneficial effects of this utility model are: by setting the screening frame, screening processing is facilitated, iron filings in the sand can be screened and separated, and the iron filings are conveniently recovered, and by setting the gantry bracket and the spiral roller, there will be no blockage during the screening process, which greatly improves work efficiency.

[0004] The existing technology uses vibration and magnets to separate the molding sand and castings. However, in actual use, as the magnets adsorb the iron filings, the space for the molding sand to pass through the material inlet gradually becomes smaller, which makes it easy to get blocked. At the same time, it is inconvenient to remove the collected iron filings and molding sand. In addition, the existing technology easily generates a lot of dust during use and pollutes the operating environment. To this end, we provide a screening structure for a sand shakeout machine to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a screening structure for a sand falling machine, which uses a conductive winding to make the screening box generate magnetism to magnetically absorb and collect iron chips, and the cooperation of a fan and a dust filter plate to realize dust collection and filtration, thereby preventing dust from polluting the operating environment. The utility model solves the problem that in the prior art, as the magnet adsorbs the iron chips, the space for the molding sand to pass through the material port gradually becomes smaller, which makes it easy to get blocked, and it is inconvenient to take out the collected iron chips and molding sand. In addition, the prior art easily generates a large amount of dust during use, thereby polluting the operating environment.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a screening structure for a shakeout machine, comprising a screening machine, wherein the screening machine comprises a screening box, wherein the screening box is made of one of soft iron and silicon steel, a conductive winding is arranged on the outside of the screening box, a motor is arranged on the inside of the screening box, a flow guide cover is arranged above the motor, and scrapers are symmetrically arranged on the left and right sides of the motor;

[0008] A dust collector is provided at the rear of the screening machine, and the dust collector includes a dust box. A dust filter plate is provided inside the dust box. A box cover is detachably fixed to the upper wall of the dust box, a fan is fixed to the upper wall of the box cover, and a box door is provided on the left wall of the dust box.

[0009] The utility model is further configured such that a mounting plate is fixed to the lower wall of the motor, and both ends of the mounting plate are fixedly connected to the screening box, and supporting legs are evenly fixed along the edge of the lower wall of the screening box.

[0010] The utility model is further configured such that a box cover is detachably fixed to the upper wall of the screening box, a sand feed box is fixed to the upper wall of the box cover, and the interior of the sand feed box is communicated with the interior of the screening box.

[0011] The utility model is further configured such that the cross section of the scraper bar is triangular, the scraper bar contacts the inner wall of the screening box, and a mounting bar is detachably fixed to the inner side wall of the scraper bar.

[0012] The utility model is further configured such that a rotating rod is fixed on the power output shaft of the motor, a connecting rod is fixed on the outer peripheral wall of the rotating rod, and the outer end of the connecting rod is fixedly connected to the mounting bar.

[0013] The utility model is further configured such that the air guide cover is conical in shape, and the outer diameter of the air guide cover is smaller than the inner diameter of the screening box; protrusions are symmetrically fixed on the side walls of the air guide cover, and the protrusions are fixedly connected to the screening box.

[0014] The utility model is further configured such that a dust discharge groove is provided at the position of the box door corresponding to the left wall of the dust removal box, the box door is rotatably connected to the dust removal box by a hinge, and the hinge is located at the front end of the box door, a bolt is provided at the rear end of the box door, and the bolt is threadedly connected to the dust removal box, and a handle is fixed to the left wall of the box door.

[0015] The utility model is further configured such that an exhaust hole is opened in the middle position of the box cover, a protective net is fixed to the upper wall of the fan, a boss is provided along the edge of the lower wall of the dust filter plate, and the boss is fixedly connected to the dust removal box.

[0016] The utility model is further configured such that a tee pipe is fixed to the front wall of the dust removal box, and collection boxes are fixed to the other two ends of the tee pipe, and the two collection boxes are respectively located behind the lower end of the screening box and behind the sand inlet box, and the collection box located behind the sand inlet box is detachably fixed to the box cover.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model provides a conductive winding and a screening box, and energizes the conductive winding to make the screening box magnetic. The molding sand to be screened moves from the upper side to the lower side of the screening box. Under the action of magnetism, the iron filings in the molding sand are attracted by the magnetism of the screening box, and the molding sand passes through the lower end of the screening box and falls into a collecting container. The screening box loses its magnetism by de-energizing the conductive winding, and the iron filings can fall into another collecting container. Compared with the prior art, the combination of the conductive winding and the screening box can avoid blockage when screening the molding sand and iron filings, and is convenient for collecting the molding sand and iron filings separately, solving the problem of the prior art that as the magnet adsorbs the iron filings, the space for the molding sand to pass through in the material passage gradually becomes smaller, which makes it easy to get blocked, and it is inconvenient to take out the collected iron filings and molding sand.

[0019] 2. The utility model sets a fan and a dust filter plate. The fan generates airflow to suck the dust generated at the feed and discharge of the screening box into the dust removal box, and uses the dust filter plate to collect and filter the dust, so as to prevent the dust from floating around and polluting the environment. It solves the problem that the existing technology easily generates a large amount of dust during use and pollutes the operating environment.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is an overall structural diagram of a screening structure for a sand shakeout machine.

[0023] Figure 2 This is a structural diagram of the interior of the screening machine.

[0024] Figure 3 This is a diagram of the connection structure between the guide cover and the protrusion.

[0025] Figure 4This is the structural diagram of the dust collector.

[0026] Figure 5 This is an exploded view of part of the dust collector structure.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1- screening machine, 101- box cover, 101a- sand inlet box, 102- motor, 102a- rotating rod, 103- air guide cover, 103a- protrusion, 104- mounting strip, 104a- scraper strip, 104b- connecting rod, 105- conductive winding, 106- screening box, 106a- mounting plate, 107- support leg, 2- dust collector, 201- box door, 201a- handle, 202- dust removal box, 202a- three-way pipe, 202b- dust exhaust trough, 202c- boss, 203- collection box, 204- fan, 204a- protective net, 205- box cover, 205a- exhaust hole, 206- dust filter plate. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1

[0031] See also Figures 1-3 The utility model is a screening structure for a sand falling machine, comprising a screening machine 1, the screening machine 1 comprising a screening box 106, the lower side of the screening box 106 is gradually narrowed, so that iron filings and molding sand can be smoothly discharged from the screening box 106, and the screening box 106 is circular, and the material of the screening box 106 is one of soft iron and silicon steel. The above material generates magnetism when the conductive winding 105 is energized, and has no magnetism when the power is off, so that the iron filings can be smoothly discharged from the screening box 106, and the outside of the screening box 106 is provided with a conductive winding 105, and the inside of the screening box 106 is provided with a motor 102 for driving the rotating rod 102a to rotate, and a deflector 103 is provided above the motor 102 for making the molding sand falling into the middle of the deflector 103 move to the peripheral wall of the deflector 103, and scraping bars 104a are symmetrically provided below the motor 102 for scraping off the residue on the inner wall of the screening box 106;

[0032] Specifically, a mounting plate 106a is fixed to the lower wall of the motor 102, and both ends of the mounting plate 106a are fixedly connected to the screening box 106. Support legs 107 are evenly fixed along the edges of the lower wall of the screening box 106 to support the screening box 106.

[0033] The upper wall of the screening box 106 is detachably fixed with a box cover 101, the upper wall of the box cover 101 is fixed with a sand inlet box 101a, and the inside of the sand inlet box 101a is communicated with the inside of the screening box 106. The sand entering the sand inlet box 101a will pass through the box cover 101 into the inside of the screening box 106 and fall to the middle position of the upper wall of the flow guide cover 103;

[0034] The cross section of the scraping strip 104a is triangularly arranged, and the scraping strip 104a is in contact with the inner wall of the screening box 106, facilitating the scraping of the inner wall of the screening box 106. The inner side wall of the scraping strip 104a is detachably fixed with a mounting strip 104;

[0035] The power output shaft of the motor 102 is fixed with a rotating rod 102a, the outer peripheral wall of the rotating rod 102a is fixed with a connecting rod 104b to improve the connection stability between the mounting strip 104 and the rotating rod 102a, and the outer end of the connecting rod 104b is fixedly connected with the mounting strip 104;

[0036] The flow guide cover 103 is conically arranged, and the outer diameter of the flow guide cover 103 is smaller than the inner diameter of the screening box 106. The side wall of the flow guide cover 103 is symmetrically fixed with a protrusion 103a, and the protrusion 103a is fixedly connected with the screening box 106. The above arrangement makes the sand move downward between the flow guide cover 103 and the screening box 106;

[0037] The operation process of the embodiment is as follows: the sand collecting container is placed below the discharge port of the screening box 106, the power supply of the conductive winding 105 is turned on, the conductive winding 105 is electrified to make the screening box 106 generate magnetism. At this time, the sand enters the sand inlet box 101a, and then passes through the box cover 101 to act on the middle position of the upper wall of the flow guide cover 103. At this time, under the action of the flow guide cover 103, the sand moves to the outer peripheral wall of the flow guide cover 103 and moves to the lower end of the screening box 106. At this time, the screening box 106 has magnetism to adsorb the iron filings in the sand, and the sand passes through the discharge port of the screening box 106 into the sand collecting container. After screening is completed, the iron filings collecting container is placed below the discharge port of the screening box 106. At this time, the conductive winding 105 is de-energized to make the screening box 106 lose magnetism. Under the action of gravity, the iron filings pass through the discharge port of the screening box 106 into the iron filings collecting container to complete the collection of the iron filings. At this time, the motor 102 is started to work to make the scraping strip 104a rotate to scrape the iron filings on the inner wall of the screening box 106.

[0038] Embodiment 2

[0039] Please refer to Figure 1 , 45 is a second embodiment of the present invention, which is based on the previous embodiment, but is different from the first embodiment in that: a dust collector 2 is provided at the rear of the screening machine 1, and the dust collector 2 includes a dust box 202, the upper side of the dust box 202 is open, and a dust filter plate 206 is provided inside the dust box 202 for filtering dust, and a box cover 205 is detachably fixed to the upper wall of the dust box 202. The dust filter plate 206 can be replaced by removing the box cover 205. A fan 204 is fixed to the upper wall of the box cover 205 for generating an airflow to suck dust into the dust box 202. A box door 201 is provided on the left wall of the dust box 202. The box door 201 is opened to expose the dust discharge slot 202b to clean the dust inside the dust box 202;

[0040] Specifically, a dust discharge slot 202b is provided on the left wall of the dust box 202 at the position where the box door 201 is located. The box door 201 is rotatably connected to the dust box 202 by a hinge, and the hinge is located at the front end of the box door 201. A bolt is provided at the rear end of the box door 201, and the bolt is threadedly connected to the dust box 202. A handle 201a is fixed to the left wall of the box door 201. The box door 201 can be opened by removing the bolt and operating the handle 201a to rotate the box door 201. When closing the box door 201, the rear wall of the box door 201 is brought into contact with the front wall of the dust box 202 by operating the handle 201a, so that the bolt is threadedly connected to the dust box 202.

[0041] An exhaust hole 205a is provided in the middle of the box cover 205. A protective net 204a is fixed to the upper wall of the fan 204. The protective net 204a is preferably made of metal to improve the protection performance. A boss 202c is provided along the edge of the lower wall of the dust filter plate 206 to provide a placement platform for the dust filter plate 206. The boss 202c is fixedly connected to the dust removal box 202.

[0042] A three-way pipe 202a is fixed to the front wall of the dust removal box 202, and collection boxes 203 are fixed to the other two ends of the three-way pipe 202a. The two collection boxes 203 are respectively located behind the lower end of the screening box 106 and behind the sand inlet box 101a. The collection box 203 located behind the sand inlet box 101a is detachably fixed to the box cover 101. The above arrangement allows dust to pass through the collection box 203 and the three-way pipe 202a into the interior of the dust removal box when the fan 204 is working.

[0043] The rest of the structure is the same as that of Example 1;

[0044] The operating process of this embodiment is: when the molding sand is being screened, the fan 204 is started. At this time, the dust passes through the collection box 203 and the three-way pipe 202a into the interior of the dust removal box, and then passes through the dust filter plate 206 and the exhaust hole 205a to be discharged from the dust removal box. During this period, when passing through the dust filter plate 206, the dust filter plate 206 filters the dust. The above can achieve the purpose of collecting dust and avoiding polluting the operating environment.

[0045] In addition, the electrical appliances in the screening structure of the shakeout machine are all electrically connected to the external power supply through conductive wires. At the same time, the electrical appliances are all existing technologies and their models are not limited here.

[0046] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0047] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A screening structure for a shakeout machine, comprising a screening machine (1), characterized in that: The screening machine (1) comprises a screening box (106), the material of the screening box (106) being one of soft iron and silicon steel, a conductive winding (105) being arranged outside the screening box (106), a motor (102) being arranged inside the screening box (106), a flow guide cover (103) being arranged above the motor (102), and scraping strips (104a) being symmetrically arranged below the motor (102); A dust collector (2) is provided at the rear of the screening machine (1), the dust collector (2) comprising a dust box (202), a dust filter plate (206) being provided inside the dust box (202), a box cover (205) being detachably fixed on the upper wall of the dust box (202), a fan (204) being fixed on the upper wall of the box cover (205), and a box door (201) being provided on the left wall of the dust box (202).

2. A screening structure for a shakeout machine according to claim 1, characterized in that: A mounting plate (106a) is fixed to the lower wall of the motor (102), and both ends of the mounting plate (106a) are fixedly connected to the screening box (106), and supporting legs (107) are evenly fixed along the edges of the lower wall of the screening box (106).

3. A screening structure for a shakeout machine according to claim 2, characterized in that: A box cover (101) is detachably fixed to the upper wall of the screening box (106), a sand feed box (101a) is fixed to the upper wall of the box cover (101), and the interior of the sand feed box (101a) is communicated with the interior of the screening box (106).

4. The screening structure for a shakeout machine according to claim 1, characterized in that: The cross section of the scraper bar (104a) is triangular, and the scraper bar (104a) contacts the inner wall of the screening box (106). The inner side wall of the scraper bar (104a) is detachably fixed with a mounting bar (104).

5. A screening structure for a shakeout machine according to claim 4, characterized in that: A rotating rod (102a) is fixed on the power output shaft of the motor (102), a connecting rod (104b) is fixed on the outer peripheral wall of the rotating rod (102a), and the outer end of the connecting rod (104b) is fixedly connected to the mounting bar (104).

6. The screening structure for a shakeout machine according to claim 1, characterized in that: The deflector (103) is arranged in a conical shape, and the outer diameter of the deflector (103) is smaller than the inner diameter of the screening box (106). The side wall of the deflector (103) is symmetrically fixed with protrusions (103a), and the protrusions (103a) are fixedly connected to the screening box (106).

7. The screening structure for a shakeout machine according to claim 1, characterized in that: A dust discharge slot (202b) is provided on the left wall of the dust removal box (202) at the location of the box door (201), and the box door (201) is rotatably connected to the dust removal box (202) via a hinge, and the hinge is located at the front end of the box door (201). A bolt is provided at the rear end of the box door (201), and the bolt is threadedly connected to the dust removal box (202). A handle (201a) is fixed to the left wall of the box door (201).

8. The screening structure for a shakeout machine according to claim 1, characterized in that: An exhaust hole (205a) is provided at the middle position of the box cover (205), a protective net (204a) is fixed to the upper wall of the fan (204), a boss (202c) is provided along the edge of the lower wall of the dust filter plate (206), and the boss (202c) is fixedly connected to the dust removal box (202).

9. The screening structure for a shakeout machine according to claim 3, characterized in that: A three-way pipe (202a) is fixed to the front wall of the dust removal box (202), and collection boxes (203) are fixed to the other two ends of the three-way pipe (202a), and the two collection boxes (203) are respectively located behind the lower end of the screening box (106) and behind the sand feeding box (101a), and the collection box (203) located behind the sand feeding box (101a) is detachably fixed to the box cover (101).

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