Roasting furnace for precoated sand processing

Abstract

The utility model is applicable to the technical field of precoated sand processing, and provides a roasting furnace for precoated sand processing, which comprises a mixing box and a dispersing box, the dispersing box is mounted above the mixing box through a support plate, a dispersing component is mounted in the dispersing box, a mixing component is mounted in the mixing box, and the dispersing component and the mixing component are connected through a driving component; when the sand grains fall onto the inclined bearing arc plates from the sand grain inlet, the sand grains can slide downwards along the gradient in the process that the rotating rod drives the bearing arc plates to rotate, and in the process that the bearing arc plates rotate right opposite to the sand grain inlet to right opposite to the sand grain outlet, due to the fact that the inclination angles of all the bearing arc plates are different, the sand grains can slide downwards along the gradient. According to the sand mixing device, the supporting arc plates are arranged, so that the sliding distances of sand grains on the supporting arc plates are different, the sand grains in the different supporting arc plates can fall into different positions in the mixing box, dispersion of the sand grains is achieved, a large number of sand grains are prevented from being accumulated and entering fixed positions in the mixing box, and uniform mixing of resin and the sand grains can be rapidly achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coated sand processing, in particular to a baking furnace for coated sand processing. Background Art

[0002] Coated sand is a molding sand or core sand whose surface is covered with a layer of solid resin film before molding. There are two coating processes: cold method and hot method: cold method uses ethanol to dissolve the resin, and adds urotropine during the sand mixing process, so that the two are coated on the surface of the sand, and the ethanol evaporates to obtain coated sand; hot method preheats the sand to a certain temperature, adds resin to melt it, stirs to coat the resin on the surface of the sand, adds urotropine aqueous solution and lubricant, cools, crushes, and sieves to obtain coated sand, which is used for steel castings and iron castings. Coated sand usually uses a roasting furnace in the hot processing process. In the existing roasting furnace, during the mixing process of sand and resin, since the temperature of the sand itself is not as high as the temperature of the resin after heating in the roasting furnace, the direct addition of sand affects the temperature in the furnace, which is easy to cause energy waste, and the sand and resin are easy to agglomerate during the melting process, affecting the processing effect.

[0003] The Chinese utility model patent with publication number CN216205243U discloses a high-efficiency and energy-saving roasting furnace for coated sand processing, including a base, a roasting furnace body is fixedly installed on the upper end of the base, a heater is fixedly installed on the lower end of the base, the roasting furnace body and the heater are electrically connected, a side plate is fixedly installed on the right end of the roasting furnace body, a motor seat is fixedly installed on the right end of the side plate, a stirring device is fixedly installed on the upper end of the motor seat, and the stirring device penetrates the side plate and extends into the roasting furnace body, a preheating furnace is fixedly installed on the upper left end of the side plate, a Jiaolong conveying mechanism is arranged in the preheating furnace, a connecting belt is commonly sleeved between the Jiaolong conveying mechanism and the stirring device, a sand grain feed hopper is fixedly connected to the upper end of the side plate, and the sand grain feed hopper is communicated with the inside of the preheating furnace. The utility model can effectively prevent the coated sand grains and resin from agglomerating.

[0004] However, the above utility model still has some shortcomings:

[0005] During the use of the above-mentioned utility model, sand particles enter the preheating furnace and are preheated through the Jiaolong conveying mechanism and the heat conduction pipe. The heated sand particles enter the roasting furnace body through the discharge pipe and are mixed with the resin. During this process, the heated sand particles will accumulate at the discharge pipe when entering the roasting furnace body through the discharge pipe. The resin and sand particles need to be continuously mixed by the stirring rod and the stirring blades so that the sand particles in the discharge pipe can gradually enter the roasting furnace body, and the stirring and mixing efficiency is low. Utility Model Content

[0006] The utility model provides a baking furnace for processing coated sand, aiming to solve the problems mentioned in the above background technology.

[0007] The utility model is implemented as follows: a baking furnace for coated sand processing comprises a mixing box and a dispersion box, wherein the dispersion box is installed above the mixing box through a support plate, a dispersion component is installed in the dispersion box, a mixing component is installed in the mixing box, the dispersion component and the mixing component are connected through a driving component, and the dispersion component disperses the sand particles and then sends them into the mixing box for stirring and mixing the sand particles and resin.

[0008] Preferably, the dispersion component includes a rotating rod, which is rotatably installed in the dispersion box, and a plurality of inclined receiving arc plates are fixedly connected to the side wall of the rotating rod through a fixed plate, and the inclination angles of the receiving arc plates are different; in this scheme, the sand particles fall into the receiving arc plates with different inclination angles, and the sand particles will slide different distances in the receiving arc plates within the same rotation time, so that the sand particles in each receiving arc plate fall to different positions, thereby achieving dispersion of the sand particles.

[0009] Preferably, several of the receiving arc plates are evenly installed on the side walls of the rotating rod, a connecting plate is fixedly connected between the side walls of every two adjacent receiving arc plates, the length direction of the receiving arc plate is consistent with the axial direction of the rotating rod, and the arc lengths of several of the receiving arc plates are different.

[0010] Preferably, a sand inlet is provided at the top of the dispersion box, and the sand inlet is provided close to a side of the receiving arc plate with a higher inclined height.

[0011] Preferably, a sand outlet is provided at the bottom of the dispersion box, a stirring inlet is provided at the top of the mixing box, a baffle is installed on the side between the sand outlet and the stirring inlet, and the baffle is arranged on the inner side of the support plate.

[0012] Preferably, the mixing assembly includes a mixing rod, which is rotatably installed in the mixing box, and a mixing blade is connected to the side wall of the mixing rod, and a plurality of mixing holes are opened on the mixing blade; in this scheme, the rotation of the mixing rod drives the rotating blade to rotate to stir and mix the gum and sand in the mixing box.

[0013] Preferably, a mounting frame is installed on the side wall of the mixing box, the driving assembly is installed on the mounting frame, the driving assembly includes a driving motor, the right end of the mixing rod passes through the right side wall of the mixing box and is connected to the output shaft end of the driving motor, the right end of the rotating rod passes through the right side wall of the dispersion box and is rotatably connected to the mounting frame; rotating wheels are mounted on the side walls of the mixing rod and the rotating rod, and the two rotating wheels are transmission-connected to the belt; in this scheme, the rotating rod and the mixing rod are synchronously driven to rotate through the transmission of the driving motor, the transmission wheel and the belt.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] When sand falls from the sand inlet to the inclined receiving arc plate, the sand will slide downward along the slope as the rotating rod drives the receiving arc plate to rotate. In the process of rotating from the receiving arc plate facing the sand inlet to facing the sand outlet, due to the different inclination angles of each receiving arc plate, the distances that the sand slides on each receiving arc plate are different. Therefore, the sand in different receiving arc plates will fall at different positions in the mixing box, thereby achieving dispersion of the sand and avoiding a large amount of sand from accumulating in fixed positions in the mixing box, so that the resin and sand can be quickly mixed evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the utility model;

[0017] Figure 2 It is a front cross-sectional schematic diagram (partial cross-section) of the utility model;

[0018] Figure 3 It is a right side cross-sectional schematic diagram of the mixing box and the dispersion box in the utility model;

[0019] In the figure:

[0020] 1. Mixing box; 2. Dispersion box; 3. Mounting frame; 4. Sand inlet; 5. Sand outlet; 6. Stirring inlet; 7. Baffle; 8. Support plate;

[0021] 9. Mixing assembly; 91. Mixing rod; 92. Mixing blade; 93. Mixing hole;

[0022] 10. Dispersed components; 101. Rotating rod; 102. Fixed plate; 103. Receiving arc plate; 104. Connecting plate;

[0023] 11. driving assembly; 111. driving motor; 112. rotating wheel; 113. belt. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1-3 The utility model provides a technical solution: a baking furnace for processing coated sand, comprising a mixing box 1 and a dispersion box 2, the dispersion box 2 is installed above the mixing box 1 through a support plate 8, a dispersion component 10 is installed in the dispersion box 2, a mixing component 9 is installed in the mixing box 1, the dispersion component 10 and the mixing component 9 are connected through a driving component 11, the dispersion component 10 disperses the sand particles and then sends them into the mixing box 1 for stirring and mixing the sand particles and the resin.

[0030] Specifically, the dispersion component 10 disperses the sand particles entering the dispersion box 2 and then sends them into the mixing box 1, ensuring that the sand particles entering the mixing box 1 can be evenly contacted with the resin, thereby improving the mixing efficiency between the sand particles and the resin; the mixing component 9 stirs and mixes the resin and the sand particles; the driving component 11 synchronously controls the operation of the mixing component 9 and the dispersion component 10.

[0031] Furthermore, the dispersion component 10 includes a rotating rod 101, which is rotatably installed in the dispersion box 2. A plurality of inclined receiving arc plates 103 are fixedly connected to the side wall of the rotating rod 101 through a fixed plate 102, and the inclination angles of the receiving arc plates 103 are different.

[0032] like Figure 2As shown, four receiving arc plates 103 are arranged on the side wall of the rotating rod 101, and each receiving arc plate 103 is supported by two fixed plates 102. The fixed plates 102 connected to the lower inclined side of the receiving arc plate 103 have the same height, and the fixed plates 102 connected to the higher inclined side of the receiving arc plate 103 have different heights, so that the inclination angles of the receiving arc plates 103 are different.

[0033] When the sand particles fall onto the inclined receiving arc plate 103, the sand particles will slide downward along the slope as the rotating rod 101 drives the receiving arc plate 103 to rotate. In the process of rotating from the receiving arc plate 103 facing the sand inlet 4 to the receiving arc plate 103 facing the sand outlet 5, since the inclination angles of each receiving arc plate 103 are different, the sliding distances of the sand particles on each receiving arc plate 103 are different, so the sand particles will fall at different positions in the mixing box 1, thereby achieving dispersion of the sand particles.

[0034] Furthermore, a plurality of receiving arc plates 103 are evenly installed on the side walls of the rotating rod 101, and a connecting plate 104 is fixedly connected between the side walls of every two adjacent receiving arc plates 103. The length direction of the receiving arc plates 103 is consistent with the axial direction of the rotating rod 101, and the arc lengths of the plurality of receiving arc plates 103 are different.

[0035] Specifically, the connection plate 104 is provided to prevent sand from falling into the groove between the two receiving arc plates 103. At the same time, the connection plate 104 can be designed to be curved to fit the inner wall of the dispersion box 2 to ensure that the sand falls into the receiving arc plate 103 from the sand inlet 4.

[0036] Furthermore, a sand inlet 4 is provided at the top of the dispersion box 2 , and the sand inlet 4 is provided close to a side of the receiving arc plate 103 with a higher inclined height.

[0037] Specifically, the opening position of the sand inlet 4 is close to the side of the receiving arc plate 103 with a higher inclined height, which can ensure that the sand can slide along the slope in the chute of the receiving arc plate 103 to achieve the purpose of dispersion.

[0038] Furthermore, a sand outlet 5 is provided at the bottom of the dispersion box 2 , a stirring inlet 6 is provided at the top of the mixing box 1 , and a baffle 7 is installed on the side between the sand outlet 5 and the stirring inlet 6 , and the baffle 7 is arranged on the inner side of the support plate 8 .

[0039] Specifically, the baffle 7 is provided to ensure that the dispersed sand particles can all enter the mixing box 1 through the stirring inlet 6 after coming out of the sand particle outlet 5, thereby avoiding spillage.

[0040] Furthermore, the mixing assembly 9 includes a mixing rod 91 rotatably mounted in the mixing box 1 , a mixing blade 92 is connected to the side wall of the mixing rod 91 , and a plurality of mixing holes 93 are formed on the mixing blade 92 .

[0041] Specifically, when the mixing rod 91 rotates, the mixing blades 92 can be synchronously driven to mix and stir the sand and resin in the mixing box 1; the setting of the mixing holes 93 can disperse the lumps between the sand and the resin.

[0042] Furthermore, a mounting frame 3 is installed on the side wall of the mixing box 1, and a driving component 11 is installed on the mounting frame 3. The driving component 11 includes a driving motor 111. The right end of the mixing rod 91 passes through the right side wall of the mixing box 1 and is connected to the output shaft end of the driving motor 111. The right end of the rotating rod 101 passes through the right side wall of the dispersion box 2 and is rotatably connected to the mounting frame 3; rotating wheels 112 are mounted on the side walls of the mixing rod 91 and the rotating rod 101, and the two rotating wheels 112 are transmission-connected to the belt 113.

[0043] Specifically, the driving motor 111 controls the mixing rod 91 to rotate to mix and stir the resin and sand particles in the mixing box 1, and at the same time drives the rotating rod 101 to rotate through the transmission of the rotating wheel 112 and the belt 113 to disperse the sand particles.

[0044] Working principle and use process of the utility model: After the utility model is installed, the driving motor 111 controls the mixing rod 91 to drive the mixing blade 92 to rotate, and at the same time drives the rotating rod 101 and the receiving arc plate 103 to rotate through the transmission of the rotating wheel 112 and the belt 113;

[0045] In the above process, the sand enters the dispersion box 2 from the sand inlet 4 and falls on the inclined receiving arc plate 103, and the sand slides in the receiving arc plate 103. When the receiving arc plate 103 rotates from the sand inlet 4 to the sand outlet 5, the dispersed sand detaches from the receiving arc plate 103 and enters the mixing box 1 through the stirring inlet 6. Under the rotation of the mixing blades 92, the sand is mixed with the resin in the mixing box 1, thereby avoiding a large amount of sand from entering a fixed position in the mixing box 1, and quickly achieving uniform mixing between the resin and the sand.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roasting furnace for processing coated sand, characterized in that: The invention comprises a mixing box (1) and a dispersion box (2), wherein the dispersion box (2) is installed above the mixing box (1) via a support plate (8), a dispersion component (10) is installed in the dispersion box (2), and a mixing component (9) is installed in the mixing box (1), wherein the dispersion component (10) and the mixing component (9) are connected via a driving component (11), and the dispersion component (10) disperses sand particles and then sends the sand particles into the mixing box (1) for stirring and mixing the sand particles and the resin.

2. A roasting furnace for processing coated sand according to claim 1, characterized in that: The dispersion assembly (10) comprises a rotating rod (101) which is rotatably mounted in the dispersion box (2). A plurality of inclined receiving arc plates (103) are fixedly connected to the side wall of the rotating rod (101) via a fixing plate (102), and the inclination angles of the receiving arc plates (103) are different.

3. A baking furnace for processing coated sand as claimed in claim 2, characterized in that: A plurality of the receiving arc plates (103) are evenly installed on the side walls of the rotating rod (101), a connecting plate (104) is fixedly connected between the side walls of every two adjacent receiving arc plates (103), the length direction of the receiving arc plates (103) is consistent with the axial direction of the rotating rod (101), and the arc lengths of the plurality of receiving arc plates (103) are different.

4. A baking furnace for processing coated sand as claimed in claim 2, characterized in that: A sand inlet (4) is provided on the top of the dispersion box (2), and the sand inlet (4) is provided close to the side of the receiving arc plate (103) with a higher inclined height.

5. The calcining furnace for processing coated sand according to claim 1, characterized in that: The bottom of the dispersion box (2) is provided with a sand outlet (5), the top of the mixing box (1) is provided with a stirring inlet (6), a baffle (7) is installed on the side between the sand outlet (5) and the stirring inlet (6), and the baffle (7) is arranged on the inner side of the support plate (8).

6. A baking furnace for processing coated sand as claimed in claim 2, characterized in that: The mixing assembly (9) comprises a mixing rod (91) which is rotatably mounted in the mixing box (1). A mixing blade (92) is connected to the side wall of the mixing rod (91), and a plurality of mixing holes (93) are formed on the mixing blade (92).

7. A baking furnace for processing coated sand according to claim 6, characterized in that: A mounting frame (3) is mounted on the side wall of the mixing box (1), the driving assembly (11) is mounted on the mounting frame (3), the driving assembly (11) comprises a driving motor (111), the right end of the mixing rod (91) passes through the right side wall of the mixing box (1) and is connected to the output shaft end of the driving motor (111), and the right end of the rotating rod (101) passes through the right side wall of the dispersion box (2) and is rotatably connected to the mounting frame (3); Rotating wheels (112) are sleeved and mounted on the side walls of the mixing rod (91) and the rotating rod (101), and the two rotating wheels (112) are transmission-connected to the belt (113).

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