Stirring equipment for refractory coating for casting

Abstract

The utility model discloses stirring equipment of refractory coating for casting, which comprises a coating barrel, a barrel cover, a first support, a motor, a stirrer and a timed stirring controller, the barrel cover is matched with the open end of the coating barrel, the timed stirring controller is used for controlling the motor to work in a timed manner, the first support is positioned in the coating barrel and fixed with the coating barrel, and a receding hole is formed in the barrel cover. The motor penetrates through the receding hole and then is fixed to the first support, the stirrer is located in the coating barrel, one end of the stirrer is fixed to the torque output end of the motor, and the motor is connected with the timing stirring controller. The fire-resistant coating stirring device can automatically stir fire-resistant coating on time, so that the fire-resistant coating is prevented from precipitating after standing.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, specifically to a mixing device for a refractory coating used in casting. Background Technology

[0002] Refractory coatings for casting are auxiliary materials applied to the surface of the core during the casting process to improve its surface refractory properties, chemical stability, resistance to molten metal erosion, and resistance to sand adhesion. Refractory coatings for casting can be made into pastes, slurries, or powders and applied to the surface of the core by methods such as spraying, brushing, impregnation, or flow application.

[0003] In casting production, since refractory coatings are used in large quantities, in order to improve production efficiency, they are usually mixed in batches according to a specified formula to form a refractory coating solution. The refractory coating is then placed in a container, and the refractory coating solution can be taken out of the container when needed.

[0004] Because the prepared refractory coating solution, if left to stand in the container for too long, will cause precipitation, the solution taken from the container will be uneven. After the refractory coating is applied to the core surface to form a refractory coating layer, the inconsistent concentration of the coating will compromise the refractory resistance of the core surface. Therefore, the current practice is to stir the refractory coating solution with a handheld electric stirrer before extracting it. This method is not only cumbersome but also physically demanding for the operators. Utility Model Content

[0005] This invention provides a stirring device for refractory coatings used in casting. This invention can automatically stir the refractory coatings on a regular basis, thereby preventing the refractory coatings from settling after standing.

[0006] The technical solutions to the above technical problems are as follows:

[0007] A mixing device for refractory coatings for casting includes a coating tank and a lid, the lid fitting into the open end of the coating tank. It also includes a first support, a motor, a stirrer, and a timed stirring controller for controlling the operation of the motor. The first support is located inside the coating tank and fixed to it. The lid has a clearance hole, through which the motor passes and is fixed to the first support. The stirrer is located inside the coating tank, with one end of the stirrer fixed to the torque output end of the motor. The motor is connected to the timed stirring controller.

[0008] Furthermore, the bucket lid includes a fixed lid and a movable lid. The fixed lid is fitted with the paint bucket, and the movable lid is hinged to the fixed lid. The movable lid is fitted with the paint bucket with a clearance. Both the fixed lid and the movable lid are provided with notches. After the fixed lid and the movable lid are assembled, the notches on the fixed lid and the movable lid constitute the clearance hole.

[0009] Furthermore, a clearance opening is provided between the first support and the inner wall of the paint bucket for pouring refractory paint into the paint bucket.

[0010] Furthermore, the timed stirring controller includes a control component, a DC power supply, a resistor, a transistor, and a thyristor. The control component is connected to the DC power supply. The output terminal of the control component is connected to one end of the resistor. The other end of the resistor is connected to the base of the transistor. The collector of the transistor is connected to the DC power supply. The emitter of the transistor is grounded. The control terminal of the thyristor is connected to the collector of the transistor. One end of the thyristor is connected to the motor. The other end of the thyristor is connected to the AC power supply. The AC power supply is connected to the motor.

[0011] Furthermore, it also includes a base and a feeding platform. The paint bucket and the feeding platform are located on the base, and the feeding platform cooperates with the paint bucket.

[0012] This utility model has the following advantages:

[0013] 1. After fixing the motor to the first bracket, the motor is used to replace manual labor in stirring the paint, reducing the physical exertion of workers.

[0014] 2. Stirring not only prevents the refractory coating solution from settling, but also ensures good suspension with fewer stirring cycles.

[0015] 3. By setting parameters through the timed stirring controller, the motor can be stirred at a specific time to meet the requirements of the coating. Attached Figure Description

[0016] Figure 1 This is a perspective view of the mixing equipment for refractory coatings used in casting.

[0017] Figure 2 In order to be in Figure 1 The diagram behind the active cover is hidden on the basis of this.

[0018] Figure 3 This is a schematic diagram of the first type of stirrer.

[0019] Figure 4 This is a schematic diagram of the second type of mixer.

[0020] Figure 5 This is the circuit diagram of a timed stirring controller.

[0021] Paint bucket 1, discharge valve 1a, bucket lid 2, clearance hole 2a, fixed cover 2b, movable cover 2c, fixed cover 2b, first bracket 3, motor 4, stirrer 5, rotating shaft 5a, support rod 5b, annular component 5c, connecting sleeve 5d, mounting plate 5e, stirring blade 5f, connecting seat 5g, timed stirring controller 6, clearance port 7, base 8, feeding platform 9, feeding bucket 10, control component U1, DC power supply VCC, resistor R1, transistor Q1, thyristor Q2, DC power supply VCC, AC power supply V. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 5 As shown, the mixing equipment for casting refractory coating of this utility model includes a coating tank 1, a tank cover 2, a first support 3, a motor 4, a stirrer 5, and a timed stirring controller 6 for timed control of the motor 4. The following is a detailed description of each part and the relationship between them.

[0024] The paint bucket 1 has a discharge valve 1a at the bottom. When it is necessary to extract the refractory paint, the refractory paint can be released by opening the discharge valve 1a. The bucket lid 2 is fitted with the open end of the paint bucket 1. The bucket lid 2 is provided with a clearance hole 2a. The bucket lid 2 includes a fixed lid 2b and a movable lid 2c. Both the fixed lid 2b and the movable lid 2c are composed of a semi-circular part and a flanged part. The fixed lid 2b is fitted with the paint bucket 1. For example, the flanged part of the fixed lid 2b is fitted with the paint bucket 1 by interference fit, or the fixed lid 2b is fitted with the paint bucket 1 by clearance fit and then fixed by welding, or the fixed lid 2b is fitted with the paint bucket 1 by clearance fit and then fixed by screws.

[0025] The movable cover 2c is hinged to the fixed cover 2b. The movable cover 2c is in clearance fit with the paint bucket 1. The flanged part of the movable cover 2c is also in clearance fit with the paint bucket 1. Both the fixed cover 2b and the movable cover 2c have notches. After the fixed cover 2b and the movable cover 2c are assembled, the notches on the fixed cover 2b and the movable cover 2c form the clearance hole 2a. The movable cover 2c has a handle 2d on its circumference. The handle 2d is preferably integrally formed with the movable cover 2c. The handle 2d facilitates the flipping of the movable cover 2c, thereby facilitating the opening or closing of the movable cover 2c.

[0026] The first support 3 is located inside and fixed to the paint bucket 1. The first support 3 is fixed to the paint bucket 1 by welding. The first support 3 consists of a first support rod and a second support rod, which intersect to form a perpendicular state. A clearance opening 7 is provided between the first support 3 and the inner wall of the paint bucket 1 for pouring refractory paint into the paint bucket 1. When the movable cover 2c is in the closed state, the clearance opening 7 is located below the movable cover 2c.

[0027] The motor 4 passes through the clearance hole 2a and is fixed to the first bracket 3. The stirrer 5 is located inside the paint bucket 1. One end of the stirrer 5 is fixed to the torque output end of the motor 4. The motor 4 is connected to the timed stirring controller 6.

[0028] The stirrer 5 includes a rotating shaft 5a and a stirring assembly. The rotating shaft 5a is fixed to the torque output end of the motor 4, and the stirring assembly is fixed to the rotating shaft 5a. Figure 3 As shown, the stirring assembly includes a support rod 5b and an annular component 5c. One end of the support rod 5b is fixed to the rotating shaft 5a, and the other end of the support rod 5b is fixed to the annular component 5c.

[0029] like Figure 4 As shown, the stirring assembly can also adopt the following structure: the stirring assembly includes a rotating shaft 5a, a connecting sleeve 5d, a mounting plate 5e, and a stirring blade 5f. The connecting sleeve 5d is fixed to the stirring shaft 5, and a connecting seat 5g extending radially along the connecting sleeve 5d is provided on the connecting sleeve 5d. The mounting plate 5e and the connecting seat 5g are fixed by fasteners. One end of the stirring blade 5f is provided with an opening. After the stirring blade 5f is inserted into the mounting plate 5e through the opening, the stirring blade 5f is welded and fixed to the mounting plate 5e. The other end of the stirring blade 5f extends radially along the mounting plate 5e.

[0030] This type of mixing assembly has the advantage of easy assembly. Because the mixing blades 5f extend radially along the mounting plate 5e, when the mixing blades 5f rotate, the large contact area between the mixing blades 5f and the material results in a large mixing thrust, easily agitating the material. This mixing assembly can be equipped with multiple mixing blades 5f; therefore, it is particularly suitable for mixing materials with high viscosity.

[0031] like Figure 5 As shown, the timed stirring controller 6 includes a control component U1, a DC power supply VCC, a resistor R1, a transistor Q1, and a thyristor Q2. The control component U1 is connected to the DC power supply VCC. The control component U1 can be a microcontroller or a PLC. Since the microcontroller or PLC can work according to the programmed instructions, it is convenient to control the timing later. The output terminal of the control component U1 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the base of the transistor Q1. The collector of the transistor Q1 is connected to the DC power supply VCC, and the emitter of the transistor Q1 is grounded. The control terminal of the thyristor Q2 is connected to the collector of the transistor Q1. One end of the thyristor Q2 is connected to the motor 4, and the other end of the thyristor Q2 is connected to the AC power supply V. The AC power supply V is connected to the motor 4. The AC power supply V preferably uses 220V AC power.

[0032] After the refractory coating is stored in the coating tank 1, the timed stirring controller 6 is powered on. Starting from power-on, a timer is activated. For example, after one hour, the control unit U1 outputs a control signal to turn on transistor Q1. This control signal flows through resistor R1 and reaches the base of transistor Q1, turning it on. The collector of transistor Q1 outputs an electrical signal to the control electrode of thyristor Q2, turning it on. This allows AC power V to be applied across motor 4, enabling motor 4 to operate. Motor 4 drives the stirrer 5, which stirs the refractory coating. After a set time, for example, 20 minutes of stirring, the control unit U1 stops outputting control signals. At this time, transistor Q1 is in the off state, its collector stops outputting electrical signals, and thyristor Q2 is also in the off state. The circuit for motor 4 is disconnected, and motor 4 stops working due to lack of power. Thus, starting from the moment the control unit U1 stops outputting control signals, the control unit U1 outputs a 20-minute control signal every hour. This achieves the purpose of timed stirring of the refractory coating.

[0033] This utility model also includes a base 8 and a feeding platform 9. The paint bucket 1 and the feeding platform 9 are located on the base 8, and the feeding platform 9 cooperates with the paint bucket 1. During feeding, the feeding bucket 10 containing refractory paint is placed on the feeding platform 9, the movable cover 2c is opened, so that the feeding bucket 10 is tilted and aligned with the clearance opening 7, so that the refractory paint in the feeding bucket 10 is transferred into the paint bucket 1 for storage.

Claims

1. A stirring device for foundry refractory coating, comprising a coating bucket (1), a bucket cover (2) matched with the opening end of the coating bucket (1), a first support (3), a motor (4), a stirrer (5), a timing stirring controller (6) for timing the operation of the motor (4), the first support (3) being located in the coating bucket (1) and fixed with the coating bucket (1), the bucket cover (2) being provided with a clearance hole (2a), the bucket cover (2) comprising a fixed cover (2b) and a movable cover (2c), the fixed cover (2b) being matched with the coating bucket (1), the movable cover (2c) being hinged with the fixed cover (2b), the movable cover (2c) being matched with the coating bucket (1) with a clearance, the fixed cover (2b) and the movable cover (2c) being both provided with notches, the notches of the fixed cover (2b) and the movable cover (2c) forming the clearance hole (2a) after the fixed cover (2b) and the movable cover (2c) are spliced together, the motor (4) being fixed with the first support (3) after passing through the clearance hole (2a), the stirrer (5) being located in the coating bucket (1), one end of the stirrer (5) being fixed with the torque output end of the motor (4), the motor (4) being connected with the timing stirring controller (6), characterized in that, The first support (3) is composed of a first support rod and a second support rod, the first support rod and the second support rod cross to form a vertical state, and a gap (7) is left between the first support (3) and the inner wall of the paint bucket (1) for pouring refractory paint into the paint bucket (1), and the gap (7) is located below the movable cover (2c) when the movable cover (2c) is in a closed state.

2. The stirring apparatus for a refractory coating for casting according to claim 1, characterized by The timing stirring controller (6) comprises a control component (U1), a direct current power supply (VCC), a resistor (R1), a transistor (Q1) and a thyristor (Q2), the control component (U1) is connected with the direct current power supply (VCC), one end of the resistor (R1) is connected with the output end of the control component (U1), the other end of the resistor (R1) is connected with the base of the transistor (Q1), the collector of the transistor (Q1) is connected with the direct current power supply (VCC), the emitter of the transistor (Q1) is grounded, the control electrode of the thyristor (Q2) is connected with the collector of the transistor (Q1), one end of the thyristor (Q2) is connected with the motor (4), the other end of the thyristor (Q2) is connected with an alternating current power supply (V), and the alternating current power supply (V) is connected with the motor (4).

3. The stirring apparatus for the refractory coating for casting according to any one of claims 1 to 2, characterized by, The base (8), the feeding platform (9), the paint bucket (1) and the feeding platform (9) are located on the base (8), and the feeding platform (9) is matched with the paint bucket (1).

Images