A valve casting production waste gas treatment device and its use method

Abstract

The present invention relates to the field of valve casting technology, and discloses a valve casting production waste gas treatment equipment and a use method thereof, comprising a support frame, a sliding mechanism slidingly connected to the interior of the support frame, a vertically arranged fixed cylinder fixedly connected to the bottom of the sliding mechanism, a first hydraulic rod being provided on the outside of the fixed cylinder, a hollow cylinder being fixedly connected to the outside of the sliding sleeve, a hollow hose being connected to the top of the hollow cylinder, a guide assembly being provided on the outside of the hollow hose, a connecting steel wire being provided inside the fixed cylinder, and the top of the connecting steel wire being fixedly connected to the sliding mechanism; in the present invention, the hollow cylinder, waste gas pretreatment assembly, suction hood and waste gas treatment mechanism are provided, and when the casting liquid is cast into the interior of the mold, the hollow cylinder and the waste gas pretreatment assembly are provided above the mold, at this time, the waste gas generated by the contact between the casting liquid and the mold can be actively inhaled, which can effectively reduce the waste gas directly discharged into the interior of the factory building, thereby purifying the environment inside the factory building and effectively ensuring the health of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of valve casting, in particular to a valve casting production waste gas treatment device and a use method thereof. Background Art

[0002] Traditionally, valves are cast by pouring liquid metal into a casting cavity that matches the shape of the valve. After cooling and solidification, parts or blanks are obtained. During casting, the cast material is heated to liquid metal, such as copper, iron, aluminum, tin, etc., and the mold material can be sand and metal. During the casting process, the molten metal comes into contact with the casting system, the mold and sand core wall, and various coatings, generating a large amount of waste gas.

[0003] In the existing casting process, workers hold the mold with clamps and place it under the casting cylinder. The molten metal inside is injected into the mold by rotating the casting cylinder. However, a large amount of waste gas is generated when the casting liquid comes into contact with the mold, and the waste gas is directly discharged into the factory. Workers inhale the waste gas for a long time, which seriously affects their health. Therefore, in order to solve the above problems, a valve casting production waste gas treatment equipment and its use method are proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a valve casting production waste gas treatment device and a method of using the same to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] As an optional solution of the valve casting production waste gas treatment equipment and the use method thereof described in the present invention, wherein: a valve casting production waste gas treatment equipment and the use method thereof, comprising a support frame, a sliding mechanism for sliding horizontally sliding in a sliding connection inside the support frame, a vertically arranged fixed cylinder fixedly connected to the bottom of the sliding mechanism, a first hydraulic rod is provided on the outside of the fixed cylinder, the top of the first hydraulic rod is fixedly connected to the sliding mechanism, a sliding sleeve is slidably connected to the bottom of the fixed cylinder, a hollow cylinder is fixedly connected to the outside of the sliding sleeve, a hollow hose is connected to the top of the hollow cylinder, a guide assembly is provided on the outside of the hollow hose, and one end of the guide assembly is fixedly connected to the support frame, a connecting steel wire is provided inside the fixed cylinder, the top of the connecting steel wire is fixedly connected to the sliding mechanism, the bottom of the connecting steel wire is fixedly connected to the placement cylinder, and a mold body is provided inside the placement cylinder;

[0007] The other end of the hollow hose is connected to the telescopic hollow cylinder, the bottom of the telescopic hollow cylinder is connected to the exhaust gas pretreatment component, the top of the telescopic hollow cylinder is fixedly connected to the exhaust gas treatment mechanism, the outer side of the exhaust gas treatment mechanism is fixedly connected to the support frame, the bottom of the exhaust gas pretreatment component is connected to an evenly distributed air suction hood, and a second hydraulic rod is provided on both sides of the telescopic hollow cylinder, the top of the second hydraulic rod is fixedly connected to the support frame, and the bottom of the second hydraulic rod is connected to the exhaust gas pretreatment component.

[0008] As an optional solution of the valve casting production waste gas treatment equipment and its use method described in the present invention, wherein:

[0009] The guide assembly includes a sliding wheel, a connecting rod and a sliding rod. A hollow hose is provided on the outside of the sliding wheel. The sliding wheel is rotatably connected to the connecting rod inside. The other end of the connecting rod is fixedly connected to the sliding rod. The other end of the sliding rod is fixedly connected to the sliding plate. The outside of the sliding plate is slidably connected to a hollow column, and the outside of the hollow column is fixedly connected to the support frame.

[0010] As an optional solution of the valve casting production waste gas treatment equipment and its use method described in the present invention, wherein:

[0011] A first spring is fixedly connected to the outer side of the sliding plate, and the other end of the first spring is fixedly connected to the hollow column.

[0012] As an optional solution of the valve casting production waste gas treatment equipment and its use method described in the present invention, wherein:

[0013] The exhaust gas treatment mechanism includes a fixed frame, a circulating water frame and a water tank. The bottom of the fixed frame is connected to the support frame. The fixed frame is provided with a circulating water frame, a water tank and an air pump. The input end of the air pump is connected to an input pipe, and the other end of the input pipe is connected to the telescopic hollow cylinder. The output end of the air pump is connected to an output pipe, and the other end of the output pipe is connected to a horizontal cylinder. A horizontally arranged horizontal plate is fixedly connected to the inside of the water tank, and evenly distributed hollow platforms are fixedly connected to the inside of the horizontal plate.

[0014] As an optional solution of the valve casting production waste gas treatment equipment and its use method described in the present invention, wherein:

[0015] Evenly distributed ventilation holes are provided above the transverse tube. The interior of the hollow platform is hollow, and the tip of the hollow platform is downwardly arranged.

[0016] As an optional solution of the valve casting production waste gas treatment equipment and its use method described in the present invention, wherein:

[0017] A first water pump and a second water pump are provided between the circulating water frame and the water tank, the input end of the first water pump is communicated with the water tank, the output end of the first water pump is communicated with the circulating water frame, the input end of the second water pump is communicated with the circulating water frame, the output end of the second water pump is communicated with the water tank, and the outer sides of the first water pump and the second water pump are fixedly connected to the fixed frame.

[0018] As an optional solution of the valve casting production waste gas treatment equipment and its use method described in the present invention, wherein:

[0019] A mesh plate arranged in a transverse direction is fixedly connected inside the circulating water frame, and a one-way valve is fixedly connected outside the output pipe.

[0020] As an optional solution of the valve casting production waste gas treatment equipment and its use method described in the present invention, wherein:

[0021] The exhaust gas pretreatment assembly includes a pretreatment frame and a collection frame. The top of the pretreatment frame is connected to the telescopic hollow cylinder. The bottom of the second hydraulic rod is fixedly connected to the pretreatment frame. The pretreatment frame is slidably connected to the collection frame. The collection frame is fixedly connected to an evenly distributed guide cover. The bottom of the pretreatment frame is fixedly connected to evenly distributed guide columns. The bottoms of the guide columns are fixedly connected to an air suction cover.

[0022] As an optional solution of the valve casting production waste gas treatment equipment and its use method described in the present invention, wherein:

[0023] Guide plates are slidably connected to both sides of the bottom of the collection frame, and the bottom of the guide plates is fixedly connected to the pre-processing frame;

[0024] A transversely arranged filter screen plate is provided above the collection frame, and the outer side of the filter screen plate is fixedly connected to the pre-processing frame.

[0025] As an optional solution of the valve casting production waste gas treatment equipment and its use method described in the present invention, wherein:

[0026] The steps are as follows:

[0027] Step 1: Connect an external power supply, place the support frame between the casting cylinder and the cooling sand pile, and place the cooling sand pile directly below the exhaust pretreatment component and the suction hood:

[0028] Step 2: When in use, workers clamp the mold body with a clamp and place it inside the placement cylinder. By starting the first hydraulic rod, the sliding sleeve is driven downward to facilitate the sliding sleeve to be placed on the outside of the connecting steel wire. Then, the clamp is used to assist the mold body to move toward the side of the casting cylinder. The casting cylinder rotates to pour the internal molten metal into the mold body. The hollow cylinder is used to absorb the exhaust gas overflowing from the mold body.

[0029] Step 3: After the casting is completed, the sliding mechanism is activated to drive the connecting wire, the placement cylinder and the mold body to move together, while the clamp still clamps the mold body to assist the mold body in moving;

[0030] Step 4: When the mold body moves to the vicinity of the sand pile, the mold body is clamped by a clamp and placed on the sand pile. The exhaust gas pretreatment component and the air suction hood are driven downward by activating the second hydraulic rod. At this time, the exhaust gas pretreatment component and the air suction hood are used to absorb the exhaust gas overflowing from the mold body;

[0031] Step 5: The exhaust gas enters the exhaust gas treatment mechanism through the exhaust gas pretreatment component and the telescopic hollow cylinder, and the exhaust gas is treated inside the exhaust gas treatment mechanism.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] In the present invention, the device is provided with a hollow cylinder, an exhaust gas pretreatment component, an air suction hood and an exhaust gas treatment mechanism. When the casting liquid is cast into the interior of the mold, the hollow cylinder and the exhaust gas pretreatment component are provided above the mold. At this time, the exhaust gas generated by the contact between the casting liquid and the mold can be actively inhaled, which can effectively reduce the exhaust gas directly discharged into the interior of the factory, thereby purifying the environment inside the factory and effectively ensuring the health of the workers.

[0034] At the same time, the connecting steel wire and the placement cylinder cooperate with the sliding mechanism to assist the mold body in moving after casting, greatly reducing the labor intensity of the staff. The sliding sleeve is driven downward by the first hydraulic rod, which can effectively shorten the shaking amplitude of the connecting steel wire, ensure the normal transfer of the mold body, and avoid the overflow of casting liquid when the mold body is moved;

[0035] When the exhaust gas passes through the hollow cylinder and hollow hose or through the suction hood and exhaust gas pretreatment component into the telescopic hollow cylinder and the exhaust gas treatment mechanism, the exhaust gas is treated by the exhaust gas treatment equipment inside the exhaust gas treatment mechanism, thereby greatly reducing the harmfulness of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A;

[0038] Figure 3 It is a structural schematic diagram of the guide assembly of the present invention;

[0039] Figure 4 Schematic diagram of the structure of the exhaust gas treatment mechanism of the present invention;

[0040] Figure 5Schematic diagram of the structure of the exhaust gas pretreatment component of the present invention.

[0041] In the figure: 1. Support frame; 2. Sliding mechanism; 3. Fixed cylinder; 4. First hydraulic rod; 5. Sliding sleeve; 6. Hollow cylinder; 7. Hollow hose; 8. Guide assembly; 801. Sliding wheel; 802. Connecting rod; 803. Sliding rod; 804. Sliding plate; 805. First spring; 806. Hollow column; 9. Exhaust gas treatment mechanism; 901. Fixed frame; 902. Circulating water frame; 903. Water tank; 904. Air pump; 905. Inlet pipe; 906. Outlet pipe; 907. One-way valve; 908, horizontal cylinder; 909, horizontal plate; 910, hollow platform; 911, mesh plate; 912, first water pump; 913, second water pump; 10, telescopic hollow cylinder; 11, second hydraulic rod; 12, exhaust gas pretreatment assembly; 1201, pretreatment frame; 1202, collection frame; 1203, guide cover; 1204, guide column; 1205, guide plate; 1206, filter mesh plate; 13, suction hood; 14, connecting wire; 15, placement cylinder; 16, mold body. DETAILED DESCRIPTION

[0042] Example 1:

[0043] See also Figure 1 and Figure 2 , the present invention provides a technical solution:

[0044] A valve casting production waste gas treatment equipment and a use method thereof, comprising a support frame 1, wherein the support frame 1 is internally slidably connected to a sliding mechanism 2 that slides laterally, the bottom of the sliding mechanism 2 is fixedly connected to a vertically arranged fixed cylinder 3, a first hydraulic rod 4 is provided on the outside of the fixed cylinder 3, the top of the first hydraulic rod 4 is fixedly connected to the sliding mechanism 2, a sliding sleeve 5 is slidably connected to the bottom of the fixed cylinder 3, the bottom of the first hydraulic rod 4 is slidably connected to the sliding sleeve 5, a hollow cylinder 6 is fixedly connected to the outside of the sliding sleeve 5, the top of the hollow cylinder 6 is connected to a hollow hose 7, a guide assembly 8 is provided on the outside of the hollow hose 7, and one end of the guide assembly 8 is fixedly connected to the support frame 1, a connecting steel wire 14 is provided inside the fixed cylinder 3, the top of the connecting steel wire 14 is fixedly connected to the sliding mechanism 2, the bottom of the connecting steel wire 14 is fixedly connected to a placement cylinder 15, and a mold body 16 is provided inside the placement cylinder 15;

[0045] The other end of the above-mentioned hollow hose 7 is connected to the telescopic hollow cylinder 10. The bottom of the above-mentioned telescopic hollow cylinder 10 is connected to the exhaust gas pretreatment component 12. The top of the above-mentioned telescopic hollow cylinder 10 is fixedly connected to the exhaust gas treatment mechanism 9. The outer side of the above-mentioned exhaust gas treatment mechanism 9 is fixedly connected to the support frame 1. The bottom of the above-mentioned exhaust gas pretreatment component 12 is connected to an evenly distributed suction hood 13. The suction hood 13 is used to treat the exhaust gas overflowing from the mold 16 above the sand pile. A second hydraulic rod 11 is provided on both sides of the above-mentioned telescopic hollow cylinder 10. The top of the above-mentioned second hydraulic rod 11 is fixedly connected to the support frame 1, and the bottom of the above-mentioned second hydraulic rod 11 is connected to the exhaust gas pretreatment component 12.

[0046] The steps are as follows:

[0047] Step 1: When in use, connect an external power source, lay the support frame 1 between the casting cylinder and the cooling sand pile, and lay the cooling sand pile directly below the exhaust gas pretreatment component 12 and the air hood 13:

[0048] Step 2: When in use, the worker clamps the mold body 16 with a clamp and places it inside the placement cylinder 15. By starting the first hydraulic rod 4, the sliding sleeve 5 moves downward, making it easy to put the sliding sleeve 5 on the outside of the connecting wire 14. Then, the clamp assists the mold body 16 to move toward the side of the casting cylinder, and the casting cylinder rotates to pour the internal molten metal into the mold body 16. The hollow cylinder 6 is used to absorb the exhaust gas overflowing from the mold body 16.

[0049] Step 3: After the casting is completed, the sliding mechanism 2 is activated to drive the connecting wire 14, the placement cylinder 15 and the mold body 16 to move together, while the clamp still clamps the mold body 16 to assist the movement of the mold body 16;

[0050] Step 4: When the mold body 16 moves to the vicinity of the sand pile, the mold body 16 is clamped by a clamp and placed above the sand pile. The exhaust gas pretreatment assembly 12 and the air suction hood 13 are driven downward by activating the second hydraulic rod 11. At this time, the exhaust gas pretreatment assembly 12 and the air suction hood 13 are used to absorb the exhaust gas overflowing from the mold body 16;

[0051] Step 5: The exhaust gas enters the exhaust gas treatment mechanism 9 through the exhaust gas pre-treatment component 12 and the telescopic hollow cylinder 10, and the exhaust gas is treated inside the exhaust gas treatment mechanism 9.

[0052] When in use, an external power supply is connected. In traditional valve casting, when the casting liquid is cast into the mold body 16, a large amount of exhaust gas is generated at this time, and when the mold body 16 is transported, a large amount of exhaust gas will be discharged into the factory during the transportation process. At the same time, when the mold body 16 is moved, the workers generally clamp the mold body 16 with a clamp, which will greatly increase the labor intensity of the workers. In this device, the workers clamp the mold body 16 with a clamp, and the mold body 16 is placed inside the placement cylinder 15. The horizontal movement of the sliding mechanism 2 is used to drive the connecting wire 14 and the placement cylinder 15 to move, which greatly reduces the labor intensity. The labor intensity of the light workers is reduced. At this time, the casting cylinder is tilted to pour the casting liquid into the interior of the mold body 16, and the air pump 904 is started at the same time. The hollow cylinder 6 on the outside of the sliding sleeve 5 is used to absorb the exhaust gas. The exhaust gas enters the exhaust gas treatment mechanism 9 through the hollow hose 7 to treat the exhaust gas. When the sliding mechanism 2 moves to the other side, the mold body 16 can be taken out by the clamp and placed on top of the sand pile for natural cooling. The first hydraulic rod 4 is set to drive the sliding sleeve 5 to move downward to ensure that the connecting wire 14 is not easy to shake, further ensuring the stable movement of the mold body 16.

[0053] Example 2

[0054] This embodiment is an improvement made to Example 1. Figure 1 and Figure 3 Specifically, the guide assembly 8 includes a sliding wheel 801, a connecting rod 802 and a sliding rod 803. A hollow hose 7 is provided on the outside of the sliding wheel 801. The sliding wheel 801 is rotatably connected to the connecting rod 802 inside. The other end of the connecting rod 802 is fixedly connected to the sliding rod 803. The other end of the sliding rod 803 is fixedly connected to the sliding plate 804. The outer side of the sliding plate 804 is slidably connected to a hollow column 806, and the outer side of the hollow column 806 is fixedly connected to the support frame 1.

[0055] A first spring 805 is fixedly connected to the outer side of the sliding plate 804 , and the other end of the first spring 805 is fixedly connected to the hollow column 806 .

[0056] The sliding mechanism 2 is an existing sliding device, so no further description will be given. When the sliding mechanism 2 moves, its hollow hose 7 moves accordingly, and the provided sliding wheel 801 plays a guiding role. When its sliding mechanism 2 moves toward the direction of the exhaust gas pretreatment component 12, its sliding wheel 801, connecting rod 802, sliding rod 803 and sliding plate 804 move closer to the lateral end of the support frame 1, which is used to compress the first spring 805 to ensure stable sliding of the sliding mechanism 2. When it resets, under the action of the first spring 805, the sliding plate 804 is driven to reset, ensuring that the hollow hose 7 is compact and preventing it from loosening and separating from the sliding wheel 801.

[0057] Example 3

[0058] This embodiment is an improvement made to Example 2. Figure 1 and Figure 4 Specifically, the above-mentioned exhaust gas treatment mechanism 9 includes a fixed frame 901, a circulating water frame 902 and a water tank 903. The bottom of the above-mentioned fixed frame 901 is connected to the support frame 1. The above-mentioned fixed frame 901 is provided with a circulating water frame 902, a water tank 903 and an air pump 904. The input end of the air pump 904 is connected to an input pipe 905, and the other end of the input pipe 905 is connected to the telescopic hollow cylinder 10. The output end of the above-mentioned air pump 904 is connected to an output pipe 906, and the other end of the output pipe 906 is connected to a horizontal cylinder 908. The inside of the above-mentioned water tank 903 is fixedly connected to a horizontal plate 909 arranged horizontally, and the inside of the above-mentioned horizontal plate 909 is fixedly connected to evenly distributed hollow platforms 910.

[0059] Evenly distributed air vents are provided above the horizontal tube 908. The interior of the hollow platform 910 is hollow, and the tip of the hollow platform 910 is downwardly facing. This arrangement ensures that the exhaust gas is located inside the water tank 903 for a long time, ensuring the length of time the exhaust gas is in contact with the water body, thereby ensuring the quality of exhaust gas treatment.

[0060] A first water pump 912 and a second water pump 913 are provided between the circulating water frame 902 and the water tank 903. The input end of the first water pump 912 is communicated with the water tank 903, the output end of the first water pump 912 is communicated with the circulating water frame 902, the input end of the second water pump 913 is communicated with the circulating water frame 902, the output end of the second water pump 913 is communicated with the water tank 903, and the outsides of the first water pump 912 and the second water pump 913 are fixedly connected to the fixed frame 901.

[0061] A horizontally arranged mesh plate 911 is fixedly connected to the interior of the circulating water frame 902, and a one-way valve 907 is fixedly connected to the outside of the output pipe 906. The setting of the one-way valve 907 ensures that the gas can only flow in one direction to avoid water backflow.

[0062] When in use, part of the exhaust gas discharged by the mold body 16 enters the exhaust gas treatment mechanism 9 through the hollow cylinder 6, the hollow hose 7, and the telescopic hollow cylinder 10, while the mold body 16 on the sand pile enters the exhaust gas treatment mechanism 9 through the suction hood 13, the exhaust gas pre-treatment component 12 and the telescopic hollow cylinder 10. At this time, the exhaust gas enters the water tank 903 under the drive of the air pump 904, and the exhaust gas is discharged through the horizontal cylinder 908 and fully contacts the water inside the water tank 903 to remove some impurities in the exhaust gas. The horizontal plate 909 and the hollow platform 910 are set for In order to avoid direct discharge of exhaust gas, ensure the contact time between exhaust gas and water, and ensure that the exhaust gas is fully treated, the first water pump 912 is set to transport the water inside the water tank 903 to the inside of the circulating water frame 902, and the water containing impurities is filtered when passing through the mesh plate 911. At this time, the second water pump 913 is set to transport the clean water above the mesh plate 911 back to the inside of the water tank 903. At this time, the water can be circulated, and the water inside the water tank 903 can continue to contact with the exhaust gas and be purified, while impurities accumulate inside the circulating water frame 902.

[0063] Example 4

[0064] This embodiment is an improvement made to the implementation of Example 3. Figure 1 and Figure 5 Specifically, the exhaust gas pretreatment assembly 12 includes a pretreatment frame 1201 and a collection frame 1202. The top of the pretreatment frame 1201 is connected to the telescopic hollow cylinder 10, and the bottom of the second hydraulic rod 11 is fixedly connected to the pretreatment frame 1201. The pretreatment frame 1201 is slidably connected to the collection frame 1202. The collection frame 1202 is fixedly connected to an evenly distributed guide cover 1203. The bottom of the pretreatment frame 1201 is fixedly connected to evenly distributed guide columns 1204, and the bottoms of the guide columns 1204 are fixedly connected to the air intake cover 13.

[0065] Guide plates 1205 are slidably connected to both sides of the bottom of the collection frame 1202. The bottom of the guide plates 1205 is fixedly connected to the pre-processing frame 1201. The guide plates 1205 are used to ensure stable sliding of the collection frame 1202.

[0066] A transversely arranged filter screen plate 1206 is provided above the collection frame 1202 . The outer side of the filter screen plate 1206 is fixedly connected to the pre-treatment frame 1201 . The filter screen plate 1206 is used to filter solid impurities in the exhaust gas to achieve pre-treatment of the exhaust gas.

[0067] When the mold body 16 above the sand pile is collecting waste gas, the pretreatment frame 1201 is driven downward by starting the second hydraulic rod 11, so that the air suction hood 13 below it is close to the top of the mold body 16. By starting the air pump 904, the waste gas above the mold body 16 enters the guide column 1204 through the air suction hood 13, and a part of the solid impurities in the waste gas enters the guide hood 1203 and the collection frame 1202. When passing through the filter plate 1206, the solid impurities fall and are located inside the collection frame 1202. When use is completed, the collection frame 1202 is slid, and it is used to centrally process the solid impurities.

[0068] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A valve casting production waste gas treatment device, comprising a support frame (1), characterized in that: The support frame (1) is internally slidably connected to a sliding mechanism (2) that slides laterally. The bottom of the sliding mechanism (2) is fixedly connected to a vertically arranged fixed cylinder (3). A first hydraulic rod (4) is provided on the outside of the fixed cylinder (3). The top of the first hydraulic rod (4) is fixedly connected to the sliding mechanism (2). A sliding sleeve (5) is slidably connected to the bottom of the fixed cylinder (3). The bottom of the first hydraulic rod (4) is slidably connected to the sliding sleeve (5). A hollow cylinder (6) is fixedly connected to the outside of the sliding sleeve (5). The top of the hollow cylinder (6) is connected to a hollow hose (7). A guide assembly (8) is provided on the outside of the hollow hose (7), and one end of the guide assembly (8) is fixedly connected to the support frame (1). A connecting steel wire (14) is provided inside the fixed cylinder (3). The top of the connecting steel wire (14) is fixedly connected to the sliding mechanism (2). The bottom of the connecting steel wire (14) is fixedly connected to a placement cylinder (15). A mold body (16) is provided inside the placement cylinder (15). The other end of the hollow hose (7) is connected to the telescopic hollow cylinder (10), the bottom of the telescopic hollow cylinder (10) is connected to the exhaust gas pretreatment component (12), the top of the telescopic hollow cylinder (10) is fixedly connected to the exhaust gas treatment mechanism (9), the outer side of the exhaust gas treatment mechanism (9) is fixedly connected to the support frame (1), the bottom of the exhaust gas pretreatment component (12) is connected to the evenly distributed suction hood (13), and the two sides of the telescopic hollow cylinder (10) are provided with a second hydraulic rod (11), the top of the second hydraulic rod (11) is connected to the support frame ( 1) is fixedly connected, the bottom of the second hydraulic rod (11) is connected to the exhaust gas pretreatment component (12); the guide component (8) includes a sliding wheel (801), a connecting rod (802) and a sliding rod (803), the outer side of the sliding wheel (801) is provided with a hollow hose (7), the inner side of the sliding wheel (801) is rotatably connected to the connecting rod (802), the other end of the connecting rod (802) is fixedly connected to the sliding rod (803), the other end of the sliding rod (803) is fixedly connected to the sliding plate (804), the sliding The outer side of the plate (804) is slidably connected to a hollow column (806), and the outer side of the hollow column (806) is fixedly connected to the support frame (1); the outer side of the sliding plate (804) is fixedly connected to a first spring (805), and the other end of the first spring (805) is fixedly connected to the hollow column (806); the exhaust gas treatment mechanism (9) includes a fixed frame (901), a circulating water frame (902) and a water tank (903), the bottom of the fixed frame (901) is connected to the support frame (1), and the interior of the fixed frame (901) is provided with a circulating water tank (903). The invention relates to a frame (902), a water tank (903) and an air pump (904), wherein the input end of the air pump (904) is connected to an input pipe (905), and the other end of the input pipe (905) is connected to a telescopic hollow cylinder (10); the output end of the air pump (904) is connected to an output pipe (906), and the other end of the output pipe (906) is connected to a transverse cylinder (908); a transversely arranged transverse plate (909) is fixedly connected to the interior of the water tank (903), and uniformly distributed hollow platforms (910) are fixedly connected to the interior of the transverse plate (909).

2. The valve casting waste gas treatment equipment according to claim 1, characterized in that: The top of the transverse tube (908) is provided with evenly distributed ventilation holes. The interior of the hollow platform (910) is hollow, and the tip of the hollow platform (910) is downwardly disposed.

3. The valve casting waste gas treatment equipment according to claim 1, characterized in that: A first water pump (912) and a second water pump (913) are provided between the circulating water frame (902) and the water tank (903); the input end of the first water pump (912) is communicated with the water tank (903); the output end of the first water pump (912) is communicated with the circulating water frame (902); the input end of the second water pump (913) is communicated with the circulating water frame (902); the output end of the second water pump (913) is communicated with the water tank (903); and the outer sides of the first water pump (912) and the second water pump (913) are fixedly connected to the fixed frame (901).

4. The valve casting waste gas treatment equipment according to claim 1, characterized in that: A horizontally arranged mesh plate (911) is fixedly connected to the interior of the circulating water frame (902), and a one-way valve (907) is fixedly connected to the outside of the output pipe (906).

5. The valve casting waste gas treatment equipment according to claim 1, characterized in that: The exhaust gas pretreatment assembly (12) comprises a pretreatment frame (1201) and a collection frame (1202); the top of the pretreatment frame (1201) is connected to the telescopic hollow cylinder (10); the bottom of the second hydraulic rod (11) is fixedly connected to the pretreatment frame (1201); the interior of the pretreatment frame (1201) is slidably connected to the collection frame (1202); the interior of the collection frame (1202) is fixedly connected to uniformly distributed guide covers (1203); the bottom of the pretreatment frame (1201) is fixedly connected to uniformly distributed guide columns (1204); the bottoms of the guide columns (1204) are fixedly connected to suction covers (13).

6. The valve casting waste gas treatment equipment according to claim 5, characterized in that: Guide plates (1205) are slidably connected to both sides of the bottom of the collecting frame (1202), and the bottom of the guide plates (1205) is fixedly connected to the pre-processing frame (1201); A transversely arranged filter screen plate (1206) is provided above the collection frame (1202), and the outer side of the filter screen plate (1206) is fixedly connected to the pre-processing frame (1201).

7. The method for using the valve casting waste gas treatment equipment according to claim 1, characterized in that: The steps are as follows: Step 1: When using, connect an external power source, lay the support frame (1) between the casting cylinder and the cooling sand pile, and lay the cooling sand pile directly below the exhaust gas pretreatment component (12) and the suction hood (13): Step 2: When in use, the worker clamps the mold body (16) with a clamp and places it inside the placement cylinder (15). By starting the first hydraulic rod (4), the sliding sleeve (5) is driven to move downward, so that the sliding sleeve (5) is conveniently placed on the outside of the connecting steel wire (14). Then, the clamp is used to assist the mold body (16) to move toward the side of the casting cylinder, and the casting cylinder rotates to pour the internal molten metal into the mold body (16). The hollow cylinder (6) is used to absorb the exhaust gas overflowing from the mold body (16); Step 3: After the casting is completed, the sliding mechanism (2) is activated to drive the connecting wire (14), the placement cylinder (15) and the mold body (16) to move together, while the clamp still clamps the mold body (16) to assist the mold body (16) in moving; Step 4: When the mold body (16) moves to the vicinity of the sand pile, the mold body (16) is clamped by a clamp and placed above the sand pile, and the exhaust gas pretreatment component (12) and the air suction hood (13) are driven downward by starting the second hydraulic rod (11). At this time, the exhaust gas pretreatment component (12) and the air suction hood (13) are used to absorb the exhaust gas overflowed from the mold body (16); Step 5: The waste gas enters the waste gas treatment mechanism (9) through the waste gas pretreatment component (12) and the telescopic hollow cylinder (10), and the waste gas is treated inside the waste gas treatment mechanism (9).

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