Waste gas treatment machine for lost foam casting

Abstract

The utility model discloses a waste gas treatment machine for lost foam casting, which comprises a casting mould barrel body, and a dust removal mechanism is arranged at the upper end of the casting mould barrel body. According to the waste gas treatment machine for lost foam casting and the dust removal mechanism, the problem that activated carbon is blocked by waste gas dust is solved, in the process that waste gas floats upwards from a casting mold barrel body, a motor drives a fan to guide the waste gas floated into an air inducing shell into a second ventilation pipe, and the fan drives a spraying pipe to rotate on a connector through a connecting rod at the same time; water sprayed by the spraying pipe adsorbs and gathers large particles in the waste gas and flows into the water guiding groove through an opening of the second ventilation pipe, so that large-particle dust in the waste gas is removed while the waste gas is led out, the problem that activated carbon is blocked by the waste gas dust is solved, and the problem that sealing is not tight due to the fact that a sealing rubber ring becomes soft when heated is solved through the cooling mechanism. In the water flowing process, heat in the sealing rubber ring is taken away, and therefore it is guaranteed that the sealing rubber ring is not overheated.

Description

Technical Field

[0001] The utility model relates to the technical field of foundry waste gas treatment, in particular to an exhaust gas treatment machine for lost foam casting. Background Technique

[0002] Lost foam casting is a full-mold casting that uses binder-free dry sand combined with vacuum pumping technology. It is to bond and combine foam models similar to the size and shape of the casting into a model cluster. After brushing refractory coating and drying, it is vibrated and molded in dry quartz sand, and poured under negative pressure to vaporize the model. The liquid metal occupies the position of the model and forms a casting after solidification and cooling;

[0003] The waste gas treatment of lost foam casting generates a spraying process. The liquid paint forms atomized dust particles and volatile benzene under the action of air pressure, which will quickly block the micropores of the activated carbon and make the activated carbon ineffective. Granular activated carbon is selected for the activated carbon. The discharged low-concentration organic gas is adsorbed on its active surface, and the purified gas is discharged at high altitude through the exhaust air duct up to standard. Content of the Utility Model

[0004] The purpose of the utility model is to provide an exhaust gas treatment machine for lost foam casting to solve the problem of exhaust gas dust blocking the activated carbon proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions, including: a casting mold barrel body, and a dust removal mechanism is arranged at the upper end of the casting mold barrel body.

[0006] Preferably, a first ventilation pipe is connected to the upper end of the casting mold barrel body. The upper end of the first ventilation pipe is fixedly connected with an air induction housing. A motor is arranged on one side surface of the air induction housing. One end surface of the output shaft of the motor is fixedly connected with a fan. One side surface center of the rotating shaft of the fan is fixedly connected with a connecting rod. One end surface of the connecting rod is fixedly connected with a spray pipe. A second ventilation pipe is connected to one side of the air induction housing. A fixing frame is fixedly connected to the inner wall surface of the second ventilation pipe. Activated carbon is arranged inside the second ventilation pipe. A connection head is fixedly penetrated through the middle of the fixing frame. One end of the connection head is connected with a connecting pipe. One end of the connecting pipe is connected with a pressure pump.

[0007] By adopting the above technical solutions, the dust removal mechanism solves the problem of exhaust gas dust blocking the activated carbon.

[0008] Preferably, a cooling mechanism is arranged at the upper end of the casting mold barrel body. The cooling mechanism includes: a sealing rubber ring is connected to the upper end of the casting mold barrel body. A diversion pipe is arranged on the surface of the sealing rubber ring. One end of the diversion pipe is connected with a return pipe. One end of the return pipe is connected with a water diversion tank. The lower end of the water diversion tank is connected with a rotating water tank.

[0009] With the above technical solution, the cooling mechanism solves the problem that the sealing rubber ring becomes soft when heated, resulting in poor sealing.

[0010] Preferably, one end of the output shaft of the motor penetrates through the inner wall of the air guiding housing, one end of the spray pipe is rotatably arranged at one end of the connector, and a sealing ring is provided at the rotational connection between the spray pipe and the connector.

[0011] With the above technical solution, it provides an institutional basis for the dust removal mechanism.

[0012] Preferably, spray heads are evenly distributed on the surface of the spray pipe, one end of the connecting pipe penetrates through the inner wall of the second ventilation pipe, and an opening is provided on the surface of the second ventilation pipe.

[0013] With the above technical solution, to ensure the spraying effect, water flows out from the opening of the second ventilation pipe.

[0014] Preferably, an annular depression is provided on the surface of the sealing rubber ring, a water collecting groove is provided inside the water guiding groove, and a diversion pipe is connected to the lower end of the water collecting groove of the water guiding groove, and one end of the return pipe penetrates through one side inner wall of the water guiding groove.

[0015] With the above technical solution, the depression on the surface of the sealing rubber ring increases the contact area with the diversion pipe and the return pipe, ensuring the cooling effect.

[0016] Preferably, the upper end of the water guiding groove is connected to the opening on the surface of the second ventilation pipe, and a water outlet is provided on one side surface of the rotating water tank.

[0017] With the above technical solution, it provides a structural basis for the cooling mechanism.

[0018] Compared with the prior art, the beneficial effects of the present utility model are: The waste gas treatment machine for lost foam casting:

[0019] 1. The dust removal mechanism solves the problem of waste gas dust clogging the activated carbon. During the process of the waste gas floating upward from the casting mold barrel, the motor drives the fan to introduce the waste gas floating into the air guiding housing into the second ventilation pipe. The fan drives the spray pipe to rotate on the connector through the connecting rod at the same time. The water sprayed by the spray pipe adsorbs and aggregates the large particles in the waste gas and flows into the water guiding groove through the opening of the second ventilation pipe, thereby removing the large particle dust in the waste gas while the waste gas is led out, avoiding the problem of waste gas dust clogging the activated carbon.

[0020] 2. The cooling mechanism solves the problem that the sealing rubber ring becomes soft when heated, resulting in poor sealing. During the flow of exhaust gas in the mold casting barrel, the high-temperature gas transfers heat to the sealing rubber ring at the upper end of the mold casting barrel. The sealing rubber ring becomes soft when heated, and the sealing effect deteriorates. The water flowing into the water diversion tank will flow into the water collection tank in the water diversion tank and flow into the return pipe through the diversion pipe at the lower end. During the flow of water, the heat in the sealing rubber ring is taken away, ensuring that the sealing rubber ring will not overheat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic three-dimensional structure diagram of the connection between the mold casting barrel of the present invention and the sealing rubber ring;

[0022] Figure 2 It is a schematic three-dimensional sectional structure diagram of the connection between the diversion pipe and the water diversion tank of the present invention;

[0023] Figure 3 It is a schematic three-dimensional sectional structure diagram of the connection between the fan and the connecting rod of the present invention;

[0024] Figure 4 It is a schematic three-dimensional sectional structure diagram of the connection between the spray pipe and the connector of the present invention;

[0025] Figure 5 It is a schematic three-dimensional structure diagram of the connection between the return pipe and the water tank of the present invention;

[0026] Figure 6 It is a schematic three-dimensional structure diagram of the connection between the air induction housing and the motor of the present invention.

[0027] In the figure: 1. Mold casting barrel; 2. Sealing rubber ring; 3. Air induction housing; 4. Motor; 5. First ventilation pipe; 6. Diversion pipe; 7. Second ventilation pipe; 8. Water diversion tank; 9. Rotary water tank; 10. Pressurization pump; 11. Connecting pipe; 12. Fan; 13. Connecting rod; 14. Spray pipe; 15. Fixed bracket; 16. Activated carbon; 17. Return pipe; 18. Connector. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figure 1-6, the present utility model provides a technical solution: an exhaust gas treatment machine for lost foam casting, comprising: a casting mold barrel body 1, a dust removal mechanism is provided at the upper end of the casting mold barrel body 1, a first ventilation pipe 5 is connected to the upper end of the casting mold barrel body 1, a blower housing 3 is fixedly connected to the upper end of the first ventilation pipe 5, a motor 4 is provided on one side surface of the blower housing 3, one end surface of the output shaft of the motor 4 is fixedly connected with a fan 12, a connecting rod 13 is fixedly connected to the center of one side surface of the rotating shaft of the fan 12, a spray pipe 14 is fixedly connected to one end surface of the connecting rod 13, a second ventilation pipe 7 is connected to one side of the blower housing 3, a fixing frame 15 is fixedly connected to the inner wall surface of the second ventilation pipe 7, activated carbon 16 is provided inside the second ventilation pipe 7, a connecting head 18 is fixedly penetrated through the middle of the fixing frame 15, a connecting pipe 11 is connected to one end of the connecting head 18, a pressure pump 10 is connected to one end of the connecting pipe 11, one end of the output shaft of the motor 4 penetrates through the inner wall of the blower housing 3, one end of the spray pipe 14 is rotatably arranged at one end of the connecting head 18, and a sealing ring is provided at the rotating connection of the spray pipe 14 and the connecting head 18. Spray heads are evenly distributed on the surface of the spray pipe 14. One end of the connecting pipe 11 penetrates through the inner wall of the second ventilation pipe 7. An opening is provided on the surface of the second ventilation pipe 7. Before starting, a water pipe is connected to the pressure pump 10. The water pressurized by the pressure pump 10 passes through the connecting pipe 11 and the connecting head 18 and enters the spray pipe 14. Then the motor 4 is started. During the process that the exhaust gas floats upward from the casting mold barrel body 1 through the first ventilation pipe 5, the motor 4 drives the fan 12 to introduce the exhaust gas floating into the blower housing 3 into the second ventilation pipe 7. The fan 12 drives the spray pipe 14 to rotate on the connecting head 18 through the connecting rod 13 at the same time. The water sprayed by the spray pipe 14 on one side of the fixing frame 15 adsorbs and aggregates the large particles in the exhaust gas and flows into the water diversion trough 8 through the opening of the second ventilation pipe 7. Thus, the large particle dust in the exhaust gas is removed while the exhaust gas is led out, avoiding the problem that the exhaust gas dust blocks the activated carbon 16.

[0030] A cooling mechanism is provided at the upper end of the mold barrel 1. The cooling mechanism includes: a sealing rubber ring 2 is connected to the upper end of the mold barrel 1. A diversion pipe 6 is provided on the surface of the sealing rubber ring 2. One end of the diversion pipe 6 is connected to a return pipe 17. One end of the return pipe 17 is connected to a water diversion tank 8. The lower end of the water diversion tank 8 is connected to a rotating water tank 9. An annular depression is provided on the surface of the sealing rubber ring 2. A water collecting tank is provided inside the water diversion tank 8, and the lower end of the water collecting tank of the water diversion tank 8 is connected to the diversion pipe 6. One end of the return pipe 17 penetrates through one side inner wall of the water diversion tank 8. The upper end of the water diversion tank 8 is connected to the surface opening of the second ventilation pipe 7. An outlet is provided on one side surface of the rotating water tank 9. During the process of the exhaust gas flowing in the mold barrel 1, the high-temperature gas will transfer heat to the sealing rubber ring 2 at the upper end of the mold barrel 1. When the sealing rubber ring 2 is heated, it becomes soft and the sealing effect becomes poor. The water flowing into the water diversion tank 8 will flow into the water collecting tank inside the water diversion tank 8 and flow into the return pipe 17 from the diversion pipe 6 at the lower end. During the process of the water flowing, the heat in the sealing rubber ring 2 is taken away, so as to ensure that the sealing rubber ring 2 will not overheat. Subsequently, the water flows from the water diversion tank 8 into the rotating water tank 9 and flows out from the outlet on one side of the rotating water tank 9.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas treatment machine for lost foam casting, comprising: The mold barrel body (1) and the sealing rubber ring (2), characterized in that: a dust removal mechanism is provided at the upper end of the mold barrel body (1), and the dust removal mechanism includes: a first ventilation pipe (5) is connected to the upper end of the mold barrel body (1), the upper end of the first ventilation pipe (5) is fixedly connected to an air extraction housing (3), a motor (4) is provided on one side surface of the air extraction housing (3), one end surface of the output shaft of the motor (4) is fixedly connected to a fan (12), a connecting rod (13) is fixedly connected to the center of one side surface of the rotating shaft of the fan (12), a spray pipe (14) is fixedly connected to one end surface of the connecting rod (13), a second ventilation pipe (7) is connected to one side of the air extraction housing (3), a diversion pipe (6) is provided on the surface of the sealing rubber ring (2), one end of the diversion pipe (6) is connected to a return pipe (17), one end of the return pipe (17) is connected to a water diversion tank (8), a water collecting tank is provided inside the water diversion tank (8), and the lower end of the water collecting tank of the water diversion tank (8) is connected to the diversion pipe (6).

2. The waste gas treatment machine for lost foam casting according to claim 1, wherein: A fixing frame (15) is fixedly connected to the inner wall surface of the second ventilation pipe (7), activated carbon (16) is provided inside the second ventilation pipe (7), a connection head (18) is fixedly penetrated through the middle of the fixing frame (15), a connection pipe (11) is connected to one end of the connection head (18), and a pressure pump (10) is connected to one end of the connection pipe (11).

3. The waste gas treatment machine for lost foam casting according to claim 1, characterized in that: A cooling mechanism is provided at the upper end of the mold barrel body (1), and the cooling mechanism includes: a sealing rubber ring (2) is connected to the upper end of the mold barrel body (1), and a rotating water tank (9) is connected to the lower end of the water diversion tank (8).

4. The waste gas treatment machine for lost foam casting according to claim 2, wherein: One end of the output shaft of the motor (4) penetrates through the inner wall of the air extraction housing (3), one end of the spray pipe (14) is rotatably arranged at one end of the connection head (18), and a sealing ring is provided at the rotating connection between the spray pipe (14) and the connection head (18).

5. The waste gas treatment machine for lost foam casting according to claim 2, characterized in that: Spray heads are evenly distributed on the surface of the spray pipe (14), one end of the connection pipe (11) penetrates through the inner wall of the second ventilation pipe (7), and an opening is provided on the surface of the second ventilation pipe (7).

6. The waste gas treatment machine for lost foam casting according to claim 1, wherein: An annular depression is provided on the surface of the sealing rubber ring (2), and one end of the return pipe (17) penetrates through one side inner wall of the water diversion tank (8).

7. An exhaust gas treatment machine for lost foam casting according to claim 3, characterized in that: The upper end of the water diversion tank (8) is connected to the opening on the surface of the second ventilation pipe (7), and a water outlet is provided on one side surface of the rotating water tank (9).

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