Automatic sand adding flow control device for valve body casting sand box

Abstract

The utility model discloses an automatic sand adding flow control device for a valve body casting sand box, which comprises a sand storage assembly, a material control assembly is arranged at one end of the sand storage assembly, a stirring assembly is arranged in the sand storage assembly, a plurality of groups of sand barrels and a conveying belt are arranged below the sand storage assembly, the sand storage assembly comprises a box body, and a sand adding assembly is arranged in the box body. Through the arrangement of the sand storage assembly and the material control assembly, the pneumatic push rod is started to indirectly drive the movable plate to move, and the multiple sets of second discharging holes in the movable plate are controlled to be communicated with the multiple sets of first discharging holes in the bottom of the box body through the moving distance of the movable plate; accordingly, the effect that sand is discharged out of the box body through the first discharging holes and the second discharging holes is achieved, meanwhile, the multiple sets of second discharging holes are arranged, it can be guaranteed that the sand is evenly discharged into the sand barrel below, and the use efficiency of the sand adding device is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve body casting technology, specifically to an automatic control device for sand feeding flow in a valve body casting sand box. Background Technology

[0002] Valve body casting refers to the manufacturing method of valve parts by pouring molten metal into a mold, cooling and solidifying it to obtain the desired shape. Among them, sand casting is a commonly used method for valve body casting. The main functions of adding sand in the valve body casting process include supporting the casting, transferring heat, forming the shape of the casting, and storing molten metal.

[0003] Existing sand-adding devices typically use a housing and an electric discharge valve to add sand to the sand bucket below. However, the electric discharge valve discharges sand too centrally below its discharge port, making it difficult to evenly distribute the sand into the sand bucket. This can easily cause sand accumulation, requiring secondary processing before compaction and reducing the efficiency of the sand-adding device. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic sand-feeding flow control device for a valve body casting sand box. Through the arrangement of a sand storage component and a material control component, a pneumatic push rod is activated to move a moving rod. Simultaneously, the moving rod moves a moving plate. Based on the distance traveled, several sets of second discharge holes on the moving plate are connected to several sets of first discharge holes at the bottom of the box, thereby achieving the effect of discharging sand from the box through the first and second discharge holes. Furthermore, by controlling the overlap between the second and first discharge holes, the sand-feeding speed is controlled. Simultaneously, the arrangement of several sets of second discharge holes ensures that sand is evenly discharged into the sand bucket below, achieving a uniform sand-feeding effect, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic sand-feeding flow control device for a valve body casting sand box, comprising a sand storage component, a material control component installed at one end of the sand storage component, a stirring component installed inside the sand storage component, several sets of sand buckets and a conveyor belt arranged below the sand storage component, the sand storage component comprising a box body, several sets of first discharge holes being opened through the bottom of the inner cavity of the box body, the material control component comprising a fixed frame fixedly installed at the bottom of the box body, the bottom of the box body extending into the interior of the fixed frame, a pneumatic push rod fixedly installed at one end of the fixed frame, a moving rod fixedly installed at one end of the pneumatic push rod, a movable rod movably extending into the interior of the fixed frame, and a moving plate fixedly installed at one end of the moving rod, several sets of second discharge holes being opened through the top of the moving plate, the top of the moving plate being in contact with the bottom of the box body.

[0006] Preferably, two sets of limiting plates are symmetrically fixedly installed at the bottom of the box, and the two sets of limiting plates and the bottom of the box form a groove, with one end of the movable plate inserted through and movable into the inside of the groove.

[0007] Preferably, the plurality of first discharge holes and the plurality of second discharge holes are arranged in a matrix, and when discharge begins, the plurality of first discharge holes and the plurality of second discharge holes are independently connected.

[0008] Preferably, the bottom of the fixing frame is provided with a discharge port, which is located below the second discharge hole.

[0009] Preferably, several sets of sand buckets are movably placed on top of the conveyor belt, and when sand is added, the top opening of one set of sand buckets is located at the bottom of the discharge port.

[0010] Preferably, the stirring assembly includes a servo motor fixedly bolted to one side of the housing, the output shaft of the servo motor being keyed to a rotating rod, the outer arc surface of the rotating rod being rotatably connected to both ends of the housing, and several sets of stirring rods being fixedly installed in the middle of the rotating rod.

[0011] Preferably, a support frame is fixedly installed at one end of the box, and a feed pipe is connected to the top of the box.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention, through the setting of a sand storage component and a material control component, indirectly drives several sets of second discharge holes on the moving plate to connect with several sets of first discharge holes at the bottom of the box by activating a pneumatic push rod. This achieves the effect of discharging sand through the first and second discharge holes into the box. Furthermore, by controlling the overlap between the second and first discharge holes, the sand adding speed can be controlled. At the same time, by using several sets of second discharge holes, sand can be evenly discharged into the sand bucket below, achieving a uniform sand adding effect and improving the efficiency of the sand adding device.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the installation structure of the stirring assembly of this utility model;

[0017] Figure 3This is an exploded view of the material control component of this utility model;

[0018] Figure 4 This is a schematic diagram of the installation structure of the limiting plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the box body of this utility model.

[0020] In the diagram: 1. Sand storage assembly; 11. Support frame; 12. Box body; 13. Feed pipe; 14. First discharge hole; 15. Limiting plate; 16. Slot; 2. Material control assembly; 21. Fixing frame; 22. Discharge port; 23. Pneumatic push rod; 24. Moving rod; 25. Moving plate; 26. Second discharge hole; 3. Mixing assembly; 31. Servo motor; 32. Rotating rod; 33. Mixing rod; 4. Sand bucket; 5. Conveyor belt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides an automatic control sand feeding flow device for a valve body casting sand box, including a sand storage component 1, a material control component 2 installed at one end of the sand storage component 1, a stirring component 3 installed inside the sand storage component 1, and several sets of sand buckets 4 and a conveyor belt 5 arranged below the sand storage component 1. The sand storage component 1 includes a box body 12, and several sets of first discharge holes 14 are opened through the bottom of the inner cavity of the box body 12. The material control component 2 includes a fixed frame 21 fixedly installed at the bottom of the box body 12, and the bottom of the box body 12 extends through to the interior of the fixed frame 21. A pneumatic push rod 23 is fixedly installed at one end of the fixed frame 21, and a moving rod 24 is fixedly installed at one end of the pneumatic push rod 23. One end of the moving rod 24 extends movably through to the interior of the fixed frame 21, and a moving plate 25 is fixedly installed at one end of the moving rod 24. Several sets of second discharge holes 26 are opened through the top of the moving plate 25, and the top of the moving plate 25 is in contact with the bottom of the box body 12.

[0023] In use, by setting up the sand storage component 1 and the material control component 2, the pneumatic push rod 23 is activated to drive the moving rod 24 to move. As the moving rod 24 moves, it also drives the moving plate 25 to move. According to the distance moved, the several sets of second discharge holes 26 on the moving plate 25 are connected to several sets of first discharge holes 14 at the bottom of the box 12, so as to achieve the effect of discharging sand through the first discharge holes 14 and the second discharge holes 26. By controlling the overlap between the second discharge holes 26 and the first discharge holes 14, the sand adding speed is controlled. At the same time, by setting up several sets of second discharge holes 26, the sand can be evenly discharged into the sand bucket 4 below, so as to achieve the effect of uniform sand adding.

[0024] Two sets of limiting plates 15 are symmetrically fixedly installed at the bottom of the box 12. The two sets of limiting plates 15 and the bottom of the box 12 form a groove 16. One end of the movable plate 25 is inserted through the groove 16. Utilizing the connection between the box 12 and the two sets of limiting plates 15, the movable plate 25 can only move left and right inside the groove 16 under the restriction of the limiting plates 15, so that the top of the movable plate 25 is always in contact with the bottom of the box 12, which is convenient for opening or closing the discharge.

[0025] Several sets of first discharge holes 14 and several sets of second discharge holes 26 are arranged in a matrix. When discharge begins, the several sets of first discharge holes 14 and several sets of second discharge holes 26 are independently connected. Through the matrix arrangement and independent connection of the first discharge holes 14 and several sets of second discharge holes 26, the dispersion area of ​​sand discharge is expanded, so that the sand can be evenly discharged into the interior of the sand bucket 4, thereby improving the efficiency of sand addition.

[0026] The bottom of the fixed frame 21 is provided with a discharge port 22, which is located below the second discharge hole 26. Through the connection between the fixed frame 21, the discharge port 22 and the second discharge hole 26, the sand discharged through the second discharge hole 26 is directly discharged into the sand bucket 4 from the discharge port 22.

[0027] Several sets of sand buckets 4 are placed on top of the conveyor belt 5. When sand is added, the top opening of one set of sand buckets 4 is located at the bottom of the discharge port 22. The conveyor belt 5 can continuously add sand to different sand buckets 4, improving the efficiency of automated production. When the sand bucket 4 that needs to be added moves to the bottom of the discharge port 22, the sand is discharged from the discharge port 22 into the interior of the sand bucket 4.

[0028] The stirring assembly 3 includes a servo motor 31 fixedly bolted to one side of the housing 12. The output shaft of the servo motor 31 is keyed to a rotating rod 32. The outer arc surface of the rotating rod 32 is rotatably connected to both ends of the housing 12. Several sets of stirring rods 33 are fixedly installed in the middle of the rotating rod 32. When the servo motor 31 is started, it drives the rotating rod 32 to rotate. The rotation of the rotating rod 32 drives the several sets of stirring rods 33 to rotate in the housing 12, thereby achieving the effect of stirring the sand in the housing 12 and preventing the sand from accumulating and clumping inside the housing 12.

[0029] A support frame 11 is fixedly installed at one end of the box 12. The support frame 11 supports the entire sand adding equipment. The top of the box 12 is connected to the feed pipe 13. Through the setting of the feed pipe 13, the effect of continuous sand injection into the box 12 is achieved.

[0030] In practical use: First, the casting sand bucket 4 is moved to the bottom of the sand adding equipment via the conveyor belt 5. The pneumatic push rod 23 is activated to control the movement of the moving plate 25. By controlling the overlap between the second discharge hole 26 and the first discharge hole 14, the sand adding speed is controlled, and the sand is evenly scattered inside the sand bucket 4. When the sand adding is completed, the pneumatic push rod 23 resets the moving plate 25. At this time, several sets of second discharge holes 26 and several sets of first discharge holes 14 are completely misaligned, achieving the effect of shutting down the sand storage component 1 and continuing to add sand. Then, the conveyor belt 5 is activated again to transfer the next set of sand buckets 4 to the bottom of the sand adding equipment, and the same steps are followed to continue adding sand. Through the above device settings, the effect of uniform sand adding is achieved.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic control device for sand feeding flow rate in a valve body casting sand box, characterized in that: It includes a sand storage component (1), a material control component (2) is installed at one end of the sand storage component (1), a stirring component (3) is installed inside the sand storage component (1), and several sets of sand buckets (4) and a conveyor belt (5) are arranged below the sand storage component (1); The sand storage assembly (1) includes a box (12), and the bottom of the inner cavity of the box (12) is provided with a number of first discharge holes (14); The material control assembly (2) includes a fixed frame (21) fixedly installed at the bottom of the box (12). The bottom of the box (12) extends through the interior of the fixed frame (21). A pneumatic push rod (23) is fixedly installed at one end of the fixed frame (21). A moving rod (24) is fixedly installed at one end of the pneumatic push rod (23). One end of the moving rod (24) extends movably through the interior of the fixed frame (21). A moving plate (25) is fixedly installed at one end of the moving rod (24). Several sets of second discharge holes (26) are opened through the top of the moving plate (25). The top of the moving plate (25) is in contact with the bottom of the box (12).

2. The automatic sand feeding flow control device for valve body casting sand box according to claim 1, characterized in that: Two sets of limiting plates (15) are symmetrically fixedly installed at the bottom of the box (12). The two sets of limiting plates (15) and the bottom of the box (12) form a groove (16). One end of the movable plate (25) is inserted through the groove (16).

3. The automatic sand feeding flow control device for valve body casting sand box according to claim 1, characterized in that: Several groups of first discharge holes (14) and several groups of second discharge holes (26) are arranged in a matrix. When discharge begins, the several groups of first discharge holes (14) and several groups of second discharge holes (26) are independently connected.

4. The automatic sand feeding flow control device for valve body casting sand box according to claim 1, characterized in that: The bottom of the fixed frame (21) is provided with a discharge port (22), which is located below the second discharge hole (26).

5. The automatic sand feeding flow control device for valve body casting sand box according to claim 1, characterized in that: Several sets of sand buckets (4) are movably placed on top of the conveyor belt (5). When sand is added, the top opening of one set of sand buckets (4) is located at the bottom of the discharge port (22).

6. The automatic sand feeding flow control device for valve body casting sand box according to claim 1, characterized in that: The stirring assembly (3) includes a servo motor (31) fixedly bolted to one side of the housing (12). The output shaft of the servo motor (31) is keyed to a rotating rod (32). The outer arc surface of the rotating rod (32) is rotatably connected to both ends of the housing (12). Several sets of stirring rods (33) are fixedly installed in the middle of the rotating rod (32).

7. The automatic sand feeding flow control device for valve body casting sand box according to claim 1, characterized in that: A support frame (11) is fixedly installed at one end of the box (12), and a feed pipe (13) is connected to the top of the box (12).

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