Die-casting waste gas treatment device

Abstract

The utility model discloses a die-casting waste gas treatment device, which relates to the technical field of waste gas treatment, and comprises a bottom plate, a die-casting machine fixedly arranged on the upper surface of the bottom plate, a protective cover, a smoke suction structure and a cleaning structure, and the protective cover comprises a fixed cover fixedly arranged on the left side surface of the bottom plate and a sliding groove formed in the upper surface of the bottom plate; the moving cover is slidably mounted on the upper surface of the bottom plate, the material taking opening is formed in the surface of the moving cover, and the shielding assembly is arranged in the moving cover. Compared with the prior art, the range hood has the beneficial effects that the stainless steel filter screen plate is arranged in the exhaust fume collecting hood, large-particle oil fume is adsorbed before the fume enters the fan, the oil fume which is not completely absorbed can be adsorbed on the fan blades, and oil stains on the surfaces of the fan blades are cleaned through timing steam injection by matching with the integrated steam generator and the spray head assembly; the water inlet pipe guarantees continuous water supply, and therefore the situation that a large amount of oil smoke is attached to the fan blades to affect the smoke suction efficiency can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a die casting waste gas treatment device. Background Technology

[0002] A die-casting machine is a machine used for pressure casting. It includes both hot-chamber and cold-chamber types. Both are further divided into vertical and horizontal types. Under pressure, the die-casting machine injects molten metal into a mold, where it cools and solidifies. After the mold is opened, a solid metal casting is obtained.

[0003] Chinese patent announcement number CN210996378U discloses a waste gas treatment device for a die-casting machine, relating to the field of die-casting processing technology. It includes a gas collection hood positioned above the die-casting machine, a suction pipe on the hood, a suction fan on the suction pipe for drawing fumes into the suction pipe, an atomizing chamber connected to the end of the suction fan away from the gas collection hood, an atomizing nozzle for spraying absorbent liquid at the upper end of the atomizing chamber, an openable / closable water outlet at the lower end of the atomizing chamber, an air outlet pipe on the side of the atomizing chamber away from the suction pipe, and an adsorption element on the suction pipe located between the suction fan and the atomizing chamber. To prevent defects such as shrinkage cavities and porosity in die-cast parts, a release agent is applied to the mold. At high temperatures, the release agent generates waste gas containing harmful substances. This invention effectively reduces the harmful substances in the waste gas.

[0004] However, this device has the following drawbacks in use: Although it can absorb exhaust gas, the exhaust gas produced by the die-casting machine contains a large amount of oil fumes. Since the suction fan is positioned at the front of the atomization chamber, a large amount of oil fumes will adhere to the fan blades when the fan absorbs the fumes. Prolonged use will affect the suction efficiency of the fan, thus impacting the absorption of exhaust gas. To address these drawbacks:

[0005] Therefore, we propose a die-casting waste gas treatment device. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a die-casting waste gas treatment device.

[0007] To address the problems existing in the prior art, the present invention adopts the following technical solution:

[0008] A die-casting exhaust gas treatment device includes a base plate, a die-casting machine fixedly mounted on the upper surface of the base plate, and further includes:

[0009] The protective cover includes a fixed cover fixedly installed on the left side of the base plate, a sliding groove opened on the upper surface of the base plate, a movable cover slidably installed on the upper surface of the base plate, a material inlet opened on the surface of the movable cover, a shielding component set inside the movable cover, and a locking component set on the surface of the protective cover, and a roller is provided at the lower end of the movable cover.

[0010] The smoking structure comprises a pre-filter assembly disposed inside a protective cover and a power assembly disposed on the left side of the protective cover;

[0011] The power assembly includes a fan housing fixedly installed on the left side of the fixed cover, a fan blade rotatably installed on the inner wall of the fan housing, a motor fixedly installed on the left side of the fan housing, and an exhaust pipe fixedly installed at the exhaust port of the fan housing, with the output end of the motor fixedly connected to the shaft end of the fan blade.

[0012] The cleaning structure is located inside the fan housing and includes a spray head fixedly installed on the inner wall of the fan housing, a steam generator fixedly installed on the back of the protective cover, a drain pipe fixedly installed at the output end of the steam generator, and a water inlet pipe fixedly installed at the input end of the steam generator. One end of the drain pipe extends into the inside of the fan housing and is connected to the water inlet end of the spray head.

[0013] Preferably, the locking assembly includes locking blocks rotatably mounted on the front and back of the movable cover, a locking groove formed on the lower surface of the locking blocks, and locking pins fixedly mounted on the front and back of the fixed cover, wherein the locking groove allows the locking pins to be inserted.

[0014] Preferably, one end of the exhaust pipe is connected to an external oil-gas separator.

[0015] Preferably, a drain pipe is fixedly installed on the surface of the fan casing, the drain pipe is connected to an external collection cylinder, and a valve is provided on the surface of the drain pipe.

[0016] Preferably, one end of the water inlet pipe is connected to an external water supply system.

[0017] Preferably, the shielding assembly includes a guide post fixedly installed on the inner wall of the movable cover, and a closed door slidably installed on the surface of the guide post, and a rubber shielding strip is provided on the front of the protective cover.

[0018] Preferably, the pre-filter assembly includes a smoke extraction pipe fixedly installed on the right side of the fixed cover, a smoke collection hood fixedly installed on the right end of the smoke extraction pipe, and a stainless steel filter screen plate fixedly installed on the inner wall of the smoke collection hood by bolts, and the smoke collection hood is positioned directly above the mold closing position.

[0019] Preferably, one end of the smoke extraction pipe is connected to the interior of the fan casing.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. The smoke hood has a built-in stainless steel filter screen that adsorbs large particles of oil fumes before the smoke enters the fan. The oil fumes that are not completely absorbed will be adsorbed on the fan blades. In conjunction with the integrated steam generator and spray head assembly, the oil stains on the surface of the fan blades are cleaned by timed steam spray. The drain pipe is connected to the collection cylinder to realize the recycling of waste liquid, and the water inlet pipe ensures a continuous water supply, thereby avoiding the problem of a large amount of oil fumes adhering to the fan blades and affecting the smoke extraction efficiency.

[0022] 2. The structure adopts a combination of fixed cover and sliding movable cover. The movable cover can be opened and closed flexibly by the rollers at the bottom of the movable cover. The protective cover is equipped with guide column sliding closed door and rubber shielding strip inside. After opening the closed door, the material receiving port can be exposed for easy material receiving. The rubber shielding strip can reduce the opening range of the material receiving port, thereby preventing a large amount of flue gas from being discharged along the material receiving port and effectively preventing a large amount of waste gas from leaking out. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an undue limitation. In the drawings:

[0024] Figure 1 This is a three-dimensional first-view schematic diagram of the present invention;

[0025] Figure 2 This is a three-dimensional second-view schematic diagram of the present invention;

[0026] Figure 3 This is a cross-sectional view of the present invention;

[0027] Figure 4 This is a three-dimensional schematic diagram of the fixing cover of this utility model;

[0028] Figure 5 This is a three-dimensional schematic diagram of the movable cover of this utility model;

[0029] Figure 6 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 7 This is a three-dimensional schematic diagram of the locking block of this utility model.

[0031] The following components are listed in the diagram: 10 Base plate, 11 Die casting machine, 20 Fixed cover, 21 Moving cover, 22 Roller, 30 Fan housing, 31 Fan blade, 32 Motor, 33 Exhaust pipe, 40 Spray head, 41 Steam generator, 42 Drain pipe, 43 Water inlet pipe, 50 Locking block, 51 Locking groove, 52 Locking pin, 60 Sewage pipe, 70 Guide column, 71 Enclosed door, 72 Rubber shielding strip, 80 Smoke extraction pipe, 81 Smoke collection hood, 82 Stainless steel filter screen. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0033] Please see Figure 1-7 This utility model provides a technical solution: a die casting exhaust gas treatment device, including a base plate 10, a die casting machine 11 fixedly installed on the upper surface of the base plate 10, and also including a protective cover, a smoke extraction structure and a cleaning structure.

[0034] The protective cover includes a fixed cover 20 fixedly installed on the left side of the base plate 10, a sliding groove opened on the upper surface of the base plate 10, a movable cover 21 slidably installed on the upper surface of the base plate 10, a material inlet opened on the surface of the movable cover 21, a shielding component set inside the movable cover 21, and a locking component set on the surface of the protective cover. The lower end of the movable cover 21 is provided with a roller 22, and a sealing gasket is provided on the opposite side of the movable cover 21 and the fixed cover 20. When the movable cover 21 is pulled, the roller 22 contacts the ground to form rolling friction, which makes it easy for the movable cover 21 to detach from the fixed cover 20. The movable cover 21 can be flexibly opened and closed through the roller 22 at the bottom of the movable cover 21, thereby exposing the die-casting machine 11 for easy maintenance and repair of the die-casting machine 11.

[0035] The locking assembly includes a locking block 50 rotatably mounted on the front and back of the movable cover 21, a locking groove 51 formed on the lower surface of the locking block 50, and a locking pin 52 fixedly mounted on the front and back of the fixed cover 20. The locking groove 51 allows the locking pin 52 to be inserted. When the fixed cover 20 and the movable cover 21 are combined, the locking block 50 can be rotated to drive the locking groove 51 into the locking pin 52, thereby fixing the fixed cover 20 and the movable cover 21 into one unit.

[0036] The shielding assembly includes a guide post 70 fixedly installed on the inner wall of the movable cover 21, and a sealing door 71 slidably installed on the surface of the guide post 70. A rubber shielding strip 72 is provided on the front of the protective cover, positioned at the material inlet. When the fixed cover 20 and the movable cover 21 are combined, opening the sealing door 71 exposes the material inlet for easy material retrieval. The rubber shielding strip 72 reduces the opening range of the material inlet, thereby preventing a large amount of flue gas from being discharged along the material inlet and effectively preventing the leakage of large amounts of waste gas.

[0037] The fume extraction structure consists of a pre-filter assembly located inside the protective cover and a power assembly located on the left side of the protective cover. The pre-filter assembly includes a fume extraction pipe 80 fixedly installed on the right side of the fixed cover 20, a fume collection hood 81 fixedly installed at the right end of the fume extraction pipe 80, and a stainless steel filter screen 82 fixedly installed on the inner wall of the fume collection hood 81 by bolts. The fume collection hood 81 is located directly above the mold closing position. When the die-casting machine 11 separates the mold, the generated fumes can quickly enter the fume collection hood 81, and the stainless steel filter screen 82 can filter large particles of oil fumes at this time.

[0038] The power assembly includes a fan housing 30 fixedly installed on the left side of the fixed cover 20, a fan blade 31 rotatably installed on the inner wall of the fan housing 30, a motor 32 fixedly installed on the left side of the fan housing 30, and an exhaust pipe 33 fixedly installed at the exhaust port of the fan housing 30. The output end of the motor 32 is fixedly connected to the shaft end of the fan blade 31. One end of the exhaust pipe 33 is connected to an external oil-gas separator. One end of the smoke extraction pipe 80 is connected to the interior of the fan housing 30. The drive motor 32 can drive the fan blade 31 to rotate, thereby generating suction at the position of the smoke collection hood 81. When the oil and gas in the smoke collection hood 81 enters the fan housing 30, the unabsorbed oil and gas will be adsorbed on the fan blade 31. Then the oil and gas will be transported to the external oil-gas separator through the exhaust pipe 33 for oil-gas separation.

[0039] The cleaning structure is located inside the fan housing 30. It includes a spray head 40 fixedly installed on the inner wall of the fan housing 30, a steam generator 41 fixedly installed on the back of the protective cover, a drain pipe 42 fixedly installed at the output end of the steam generator 41, and a water inlet pipe 43 fixedly installed at the input end of the steam generator 41. One end of the drain pipe 42 extends into the inside of the fan housing 30 and is connected to the water inlet end of the spray head 40 to drive the steam generator 41. At this time, the steam generator 41 generates high-temperature steam and delivers it into the spray head 40. After the steam is sprayed onto the fan blades 31, it can clean the oil stains on the surface of the fan blades 31. A waterproof sealing ring is provided at the connection between the fan housing 30 and the motor 32 to prevent steam from entering the motor 32 cavity.

[0040] A drain pipe 60 is fixedly installed on the surface of the fan housing 30. The drain pipe 60 is connected to an external collection cylinder, and a valve is provided on the surface of the drain pipe 60. One end of the water inlet pipe 43 is connected to an external water supply system. The drain pipe 60 is connected to the collection cylinder to realize waste liquid recovery, and the water inlet pipe 43 ensures continuous water supply, thereby avoiding the problem of a large amount of oil smoke adhering to the fan blades 31, which affects the smoke extraction efficiency.

[0041] Specifically, the working principle and operation method of this utility model are as follows:

[0042] The movable cover 21 slides open and closes: the movable cover 21 is slid open and close by sliding the bottom roller 22 to separate or close from the fixed cover 20, which facilitates the maintenance of the die-casting machine 11. After merging, the locking block 50 is rotated so that the locking groove 51 is engaged with the locking pin 52 of the fixed cover 20 to form a sealed space.

[0043] Leakage prevention component: The closed door 71 slides along the guide post 70 to control the opening and closing of the material inlet, and the flexible rubber shielding strip 72 narrows the opening to prevent a large amount of exhaust gas from leaking out during material handling.

[0044] Waste gas treatment process

[0045] Smoke hood 81 captures: When the die-casting machine 11 opens the mold, the exhaust gas is quickly drawn in by the smoke hood 81 directly above the mold closing. Large particles of oil fumes are adsorbed by the stainless steel filter screen 82 inside the smoke hood 81, reducing the subsequent processing load.

[0046] Fan drive: Motor 32 drives fan blade 31 to rotate, creating negative pressure at the smoke collection hood 81, accelerating the intake of exhaust gas;

[0047] Preliminary oil-gas separation: Fine oil mist that is not intercepted by the stainless steel filter screen 82 enters the fan housing 30 with the airflow, and some of it is adsorbed on the surface of the fan blades 31. The remaining oil and gas are transported to the external oil-gas separator for further treatment through the exhaust pipe 33.

[0048] Steam cleaning: The steam generator 41 generates high-temperature steam, which is delivered to the spray head 40 inside the fan housing 30 through the drain pipe 42 and sprayed directionally onto the surface of the fan blades 31 to dissolve and wash away the oil stains.

[0049] Waste liquid recovery: Open the valve, and the oil-water mixture after cleaning will be discharged into the external collection cylinder through the drain pipe 60.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art based on the technical solution and concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A die-casting exhaust gas treatment device, comprising a base plate (10) and a die-casting machine (11) fixedly mounted on the upper surface of the base plate (10), characterized in that, Also includes: The protective cover includes a fixed cover (20) fixedly installed on the left side of the base plate (10), a sliding groove opened on the upper surface of the base plate (10), a movable cover (21) slidably installed on the upper surface of the base plate (10), a material inlet opened on the surface of the movable cover (21), a shielding component set inside the movable cover (21), and a locking component set on the surface of the protective cover, and a roller (22) is provided at the lower end of the movable cover (21). The smoking structure comprises a pre-filter assembly disposed inside a protective cover and a power assembly disposed on the left side of the protective cover; The power assembly includes a fan housing (30) fixedly installed on the left side of the fixed cover (20), a fan blade (31) rotatably installed on the inner wall of the fan housing (30), a motor (32) fixedly installed on the left side of the fan housing (30), and an exhaust pipe (33) fixedly installed at the exhaust port of the fan housing (30), and the output end of the motor (32) is fixedly connected to the shaft end of the fan blade (31); The cleaning structure is located inside the fan housing (30) and includes a spray head (40) fixedly installed on the inner wall of the fan housing (30), a steam generator (41) fixedly installed on the back of the protective cover, a drain pipe (42) fixedly installed at the output end of the steam generator (41), and a water inlet pipe (43) fixedly installed at the input end of the steam generator (41). One end of the drain pipe (42) extends into the inside of the fan housing (30) and is connected to the water inlet end of the spray head (40).

2. The die-casting waste gas treatment device according to claim 1, characterized in that: The locking assembly includes a locking block (50) rotatably mounted on the front and back of the movable cover (21), a locking groove (51) formed on the lower surface of the locking block (50), and a locking pin (52) fixedly mounted on the front and back of the fixed cover (20), wherein the locking groove (51) allows the locking pin (52) to be inserted.

3. The die-casting waste gas treatment device according to claim 1, characterized in that: One end of the exhaust pipe (33) is connected to an external oil-gas separator.

4. The die-casting waste gas treatment device according to claim 1, characterized in that: A drain pipe (60) is fixedly installed on the surface of the fan housing (30). The drain pipe (60) is connected to an external collection cylinder, and a valve is provided on the surface of the drain pipe (60).

5. The die-casting waste gas treatment device according to claim 1, characterized in that: One end of the water inlet pipe (43) is connected to the external water supply system.

6. The die-casting waste gas treatment device according to claim 1, characterized in that: The shielding assembly includes a guide post (70) fixedly installed on the inner wall of the movable cover (21), and a closed door (71) slidably installed on the surface of the guide post (70), and a rubber shielding strip (72) is provided on the front of the protective cover.

7. The die-casting waste gas treatment device according to claim 1, characterized in that: The pre-filter assembly includes a smoke extraction pipe (80) fixedly installed on the right side of the fixed cover (20), a smoke collection hood (81) fixedly installed on the right end of the smoke extraction pipe (80), and a stainless steel filter screen (82) fixedly installed on the inner wall of the smoke collection hood (81) by bolts, and the smoke collection hood (81) is located directly above the mold closing position.

8. The die-casting waste gas treatment device according to claim 7, characterized in that: One end of the smoke extraction pipe (80) is connected to the interior of the fan casing (30).

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