Casting sand adding equipment

Abstract

The utility model discloses casting sand adding equipment which comprises a box body, and the top of the box body is communicated with a feeding hopper. The sand adding mechanism comprises a screen frame, an arc-shaped seat, a vibration spring, an inhaul cable and a valve plate, a discharging opening is formed in one side of the box body and communicates with the input end of external grinding equipment, and the bottom end of the screen frame is rotationally connected to the inner wall of the box body and is close to the bottom of the discharging opening. The sand feeding device has the advantages that by arranging the sand feeding mechanism, when a large amount of sand exists on the screen, the screen is increased under the gravity action of the sand, and the vibration spring is compressed, so that the valve plate is pulled through the inhaul cable, the valve plate rotates reversely to reduce the gap between the valve plate and the inner wall of the feeding hopper, and then the sand feeding amount is automatically reduced; on the contrary, when the amount of the sand on the screen is small, the sand feeding amount is automatically increased, and finally the discharging of the sand is kept in a relatively uniform and stable state.

Description

Technical Field

[0001] The utility model relates to the technical field of casting equipment, in particular to a casting sand adding equipment. Background Art

[0002] Foundry sand adding equipment is a device used to process sand materials in foundry equipment. Usually, after the sand and gravel are sent into the sand adding box, they pass through an inclined filter screen. The sand and gravel with larger particle sizes pass through the filter screen and enter the grinding box for grinding and crushing, while the sand and gravel with smaller particle sizes pass through the filter screen for easy use.

[0003] Patent application number CN202220681881.8 discloses a foundry sand adding device, which controls the amount of sand entering by manually controlling the rotation of a baffle. In this method, the amount of sand entering cannot be automatically controlled, which increases the workload of the staff. Utility Model Content

[0004] The utility model aims to provide a foundry sand adding device to solve the problem that the amount of sand entering cannot be automatically controlled in the traditional technology, which increases the workload of the staff.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A casting sand adding device comprises: a box body, the top of which is connected to a feed hopper; a sand adding mechanism, which comprises a mesh frame, an arc seat, a vibration spring, a cable and a valve plate; a discharge port is provided on one side of the box body, the discharge port is connected to an input end of an external grinding device, the bottom end of the mesh frame is rotatably connected to the inner wall of the box body and is close to the bottom of the discharge port, a side of the box body away from the discharge port is fixedly connected to an arc seat, the top end of the mesh frame is connected to the arc seat, a vibration spring is fixedly connected between the mesh frame and the arc seat, and the The end of the screen frame close to the arc seat is fixedly connected to a pull cable, the end of the pull cable away from the screen frame passes through the arc seat, the inner wall of the box and the feed hopper and is fixedly connected to a valve plate, the top of the valve plate is rotatably connected to the inner wall of the feed hopper, an arc groove is provided at the bottom of the arc seat, the top of the screen frame is slidably connected in the arc groove, the end of the vibration spring away from the screen frame is fixedly connected to the bottom of the arc groove, the lower surface of the screen frame and the bottom of the arc seat are fixedly connected to the same sealing cover, wherein the arc groove and the vibration spring are located in the space surrounded by the screen frame, the arc seat and the sealing cover.

[0007] In order to better achieve the above purpose, the utility model adopts a further technical solution: the same rope groove is opened in the arc seat, the box body and the feed hopper, and the pull rope is matched with the internal clearance of the rope groove.

[0008] In order to better achieve the above purpose, the utility model adopts a further technical solution: the valve plate is arranged obliquely, and the bottom end of the valve plate is inclined to point toward the top end of the screen frame.

[0009] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: a support spring is fixedly connected to the bottom of the valve plate, and one end of the support spring away from the valve plate is fixedly connected in the feed hopper.

[0010] The utility model has the advantages that, by arranging the sand adding mechanism, the sand material falls to the top of the screen along the valve plate, thereby improving the overall utilization effect of the screen, and under the elastic force of the vibration spring, the screen swings back and forth around its own bottom end, and shakes the sand material to the discharge port, while allowing the sand material with smaller particle size to pass through the screen, and facilitates the sand material with larger particle size to be shaken to the discharge port, effectively avoiding the sand material from being retained on the screen and blocking the mesh of the screen; when there is more sand material on the screen, the screen is subjected to a greater gravity effect of the sand material, and the vibration spring is compressed, thereby pulling the valve plate through the cable, and the valve plate rotates in the opposite direction to reduce the gap between the valve plate and the inner wall of the feed hopper, thereby automatically reducing the amount of sand fed; on the contrary, when there is less sand material on the screen, the amount of sand fed is automatically increased, and finally the sand material discharge is kept in a relatively uniform and stable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a vertical cross-sectional structural schematic diagram of the utility model;

[0013] Figure 3 for Figure 2 The enlarged schematic diagram of part A in the middle;

[0014] Figure 4 for Figure 2 Enlarged schematic diagram of part B in the middle.

[0015] In the figure: 1 box body, 2 feed hopper, 3 mesh frame, 4 screen, 5 arc seat, 6 discharge port, 7 arc groove, 8 sealing cover, 9 vibration spring, 10 cable, 11 rope groove, 12 valve plate, 13 support spring. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] Reference Figure 1-Figure 4As shown, a casting sand adding device comprises: a box body 1, the top of the box body 1 is connected to a feed hopper 2; a sand adding mechanism, the sand adding mechanism comprises a mesh frame 3, an arc seat 5, a vibration spring 9, a cable 10 and a valve plate 12, a discharge port 6 is opened on one side of the box body 1, the discharge port 6 is connected to the input end of the external grinding equipment, the bottom end of the mesh frame 3 is rotatably connected to the inner wall of the box body 1, and is close to the bottom of the discharge port 6, the side of the box body 1 away from the discharge port 6 is fixedly connected to the arc seat 5, the top of the mesh frame 3 is connected to the arc seat 5, the vibration spring 9 is fixedly connected between the mesh frame 3 and the arc seat 5, and the mesh frame 3 is close to the bottom of the discharge port 6. A pull cable 10 is fixedly connected to one end near the arc seat 5, and the end of the pull cable 10 away from the screen frame 3 passes through the arc seat 5, the inner wall of the box body 1 and the feed hopper 2 and is fixedly connected to a valve plate 12, and the top of the valve plate 12 is rotatably connected to the inner wall of the feed hopper 2; an arc groove 7 is provided at the bottom of the arc seat 5, and the top of the screen frame 3 is slidably connected in the arc groove 7, and the end of the vibration spring 9 away from the screen frame 3 is fixedly connected to the bottom of the arc groove 7, and the lower surface of the screen frame 3 and the bottom of the arc seat 5 are fixedly connected to the same sealing cover 8, wherein the arc groove 7 and the vibration spring 9 are located in the space surrounded by the screen frame 3, the arc seat 5 and the sealing cover 8.

[0018] In this embodiment, the same rope groove 11 is formed in the arc seat 5 , the box body 1 and the feed hopper 2 , and the cable 10 is in clearance fit with the inner part of the rope groove 11 .

[0019] The valve plate 12 is arranged obliquely, and the bottom end of the valve plate 12 is inclined to point toward the top end of the screen frame 3 .

[0020] A support spring 13 is fixedly connected to the bottom of the valve plate 12 , and one end of the support spring 13 away from the valve plate 12 is fixedly connected in the feed hopper 2 .

[0021] When the utility model is used, when sand is added through the feed hopper 2, the sand falls on the valve plate 12, overcoming the support spring 13, and the valve plate 12 rotates downward to increase the feed diameter, so that more sand falls into the box body 1 from the gap between the valve plate 12 and the inner wall of the feed hopper 2; the valve plate 12 rotates to pull the cable 10, so that the top of the net frame 3 stretches the vibration spring 9 and slides to the top of the arc groove 7, so that the vibration spring 9 stretches and accumulates force, thereby improving the effect of subsequently driving the net frame 3 to vibrate; when the sand falls on the screen 4 on the net frame 3, the sand impacts the screen 4, and under the elastic force of the vibration spring 9, the screen 4 reciprocates around its bottom end, shaking off the sand to the discharge port 6, while allowing sand with a smaller particle size to pass through the screen 4, Sand with a larger particle size is shaken toward the discharge port 6, effectively preventing the sand from being retained on the screen 4 and blocking the mesh of the screen 4; when there is more sand on the screen 4, the screen 4 is subjected to an increased gravity effect of the sand, and the vibration spring 9 is compressed, thereby pulling the valve plate 12 through the cable 10, and the valve plate 12 rotates in the opposite direction to reduce the gap between the valve plate 12 and the inner wall of the feed hopper 2, thereby automatically reducing the amount of sand fed; and when there is less sand on the screen 4, the vibration spring 9 is less compressed, and the pulling effect of the cable 10 on the valve plate 12 is weak, thereby reducing the reverse rotation angle of the valve plate 12, and increasing the gap between the valve plate 12 and the inner wall of the feed hopper 2, thereby automatically increasing the amount of sand fed, and ultimately maintaining a relatively uniform and stable state of sand feeding.

Claims

1. A casting sand adding device, characterized in that: include: A box body (1), wherein the top of the box body (1) is connected to a feed hopper (2); a sand adding mechanism, wherein the sand adding mechanism comprises a screen frame (3), an arc seat (5), a vibration spring (9), a cable (10) and a valve plate (12); a discharge port (6) is provided on one side of the box body (1), wherein the discharge port (6) is connected to an input end of an external grinding device; the bottom end of the screen frame (3) is rotatably connected to the inner wall of the box body (1) and is close to the bottom of the discharge port (6); the side of the box body (1) away from the discharge port (6) is fixedly connected to the arc seat (5); the top end of the screen frame (3) is connected to the arc seat (5); a vibration spring (9) is fixedly connected between the screen frame (3) and the arc seat (5); the screen frame (3) is close to the arc seat (5) and is connected to the arc seat (5); ) is fixedly connected to a cable (10) at one end, the cable (10) at the end away from the screen frame (3) passes through the arc seat (5), the inner wall of the box body (1) and the feed hopper (2), and is fixedly connected to a valve plate (12), the top of the valve plate (12) is rotatably connected to the inner wall of the feed hopper (2), the bottom of the arc seat (5) is provided with an arc groove (7), the top of the screen frame (3) is slidably connected in the arc groove (7), the end of the vibration spring (9) away from the screen frame (3) is fixedly connected to the bottom of the arc groove (7), the lower surface of the screen frame (3) and the bottom of the arc seat (5) are fixedly connected to the same sealing cover (8), wherein the arc groove (7) and the vibration spring (9) are located in the space surrounded by the screen frame (3), the arc seat (5) and the sealing cover (8).

2. A casting sand adding device according to claim 1, characterized in that: The arc-shaped seat (5), the box body (1) and the feed hopper (2) are provided with a common rope groove (11), and the pull rope (10) is clearance-matched with the inner part of the rope groove (11).

3. A casting sand adding device according to claim 1, characterized in that: The valve plate (12) is arranged in an inclined manner, and the bottom end of the valve plate (12) is inclined to point toward the top end of the screen frame (3).

4. A casting sand adding device according to claim 1, characterized in that: A support spring (13) is fixedly connected to the bottom of the valve plate (12); one end of the support spring (13) away from the valve plate (12) is fixedly connected in the feed hopper (2).

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