Hose processing waste gas collecting device

Abstract

The utility model discloses a hose processing waste gas collecting device, which is used for collecting waste gas at an extrusion port of a die and comprises a main pipeline, the main pipeline is connected with negative pressure power, a gas collecting structure is arranged above the extrusion port of the die, a buffer tank is arranged between the gas collecting structure and the main pipeline, and the buffer tank is connected with the main pipeline. The buffer tank is sealed and arranged in a concave shape, a first collecting pipe is arranged between one end of the buffer tank and the gas collecting structure, a second collecting pipe is arranged between the other end of the buffer tank and the gas collecting structure, and an oil discharging pipe is arranged at the bottom of the buffer tank. The buffering box is additionally arranged before waste gas enters the main pipeline, waste gas flowing is slowed down, waste gas heat dissipation is promoted, most waste gas is easily condensed into waste oil liquid at the buffering box, backflow of the waste oil liquid to a mold extrusion opening is obviously reduced, waste gas entering the main pipeline is obviously reduced, oil dirt accumulation is reduced, and the service life of the mold is prolonged. And oil collection is also convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a waste gas collection device for hose processing. Background Technique

[0002] The basic principle of hose processing is that the raw material is first melted and then extruded into a tube shape by a mold, and then immediately cooled and shaped. The raw material melting process is fully enclosed, and only at the mold extrusion port will there be obvious waste gas escape due to temporary high temperature; this kind of waste gas is mainly in the atomized state of oil liquid components, and needs to be collected and treated uniformly to avoid air pollution and reduce the harm to the working environment and human health. As Figure 6 and Figure 7 shown, at present, the waste gas collection mainly extracts through a negative pressure system, and multiple sets of hose processing equipment share one negative pressure system. Therefore, there are many pipeline branches and long paths in the negative pressure system. After the waste gas cools down, it is easy to condense into waste oil liquid, and this condensation will occur in the long-distance waste gas collection pipeline. Therefore, after running for a period of time, obvious waste oil liquid will accumulate in the pipeline. This situation is that the waste oil liquid is easy to flow back to the mold extrusion port, polluting the newly formed hose and even affecting the hose quality, and the other is that oil scale is easy to accumulate on the inner wall of the pipeline, increasing the pipeline cleaning and maintenance frequency. Therefore, it is necessary to improve the waste gas collection method to improve the above situation. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a waste gas collection device for hose processing that significantly reduces the backflow of waste oil liquid, is conducive to reducing the accumulation of oil scale, and is convenient for oil liquid collection.

[0004] To solve the above technical problem, the technical solution of the utility model is: a waste gas collection device for hose processing, used to collect the waste gas at the mold extrusion port, including a main pipeline, the main pipeline is connected with a negative pressure power, a gas collection structure is arranged above the mold extrusion port, a buffer box is arranged between the gas collection structure and the main pipeline, the buffer box is airtight and arranged in a concave shape, a first collection pipe is arranged between one end of the buffer box and the gas collection structure, a second collection pipe is arranged between the other end of the buffer box and the gas collection structure, and an oil discharge pipe is arranged at the bottom of the buffer box.

[0005] As a preferred technical solution, the buffer box includes two oppositely arranged concave-shaped side plates, a far side plate is fixedly sealed between the corresponding far edges of the two concave-shaped side plates, a bottom plate is fixedly sealed between the bottom edges of the two concave-shaped side plates, a top plate is fixedly sealed between the corresponding top edges of the two concave-shaped side plates, a cleaning port is formed between the two top plates and the two concave-shaped side plates, and a U-shaped cover plate is buckled at the cleaning port.

[0006] As a preferred technical solution, the bottom plate is obliquely arranged and gradually decreases towards the drain pipe.

[0007] As a preferred technical solution, the buffer tank is located below the main pipeline, and the second collecting pipe is arranged vertically.

[0008] As a preferred technical solution, the gas collecting structure includes a gas collecting pipe that is slidably sleeved with the first collecting pipe, and a gas collecting port is arranged on the gas collecting pipe and faces the extrusion outlet of the mold.

[0009] Due to the adoption of the above technical solution, the waste gas collecting device for hose processing is used to collect the waste gas at the extrusion outlet of the mold, and includes a main pipeline. The main pipeline is connected with a negative pressure power source. A gas collecting structure is arranged above the extrusion outlet of the mold. A buffer tank is arranged between the gas collecting structure and the main pipeline. The buffer tank is airtight and arranged in a concave shape. A first collecting pipe is arranged between one end of the buffer tank and the gas collecting structure, and a second collecting pipe is arranged between the other end of the buffer tank and the gas collecting structure. A drain pipe is arranged at the bottom of the buffer tank. In the present invention, the buffer tank is added before the waste gas enters the main pipeline. The increased channel area is used to slow down the flow of the waste gas, and the larger surface area of the tank body is used to promote the heat dissipation of the waste gas. Most of the waste gas is easily condensed into waste oil liquid at the buffer tank. The waste oil liquid automatically flows to the bottom of the buffer tank under its own gravity and is discharged and collected through the drain pipe, which is convenient for oil liquid collection. The backflow of the waste oil liquid to the extrusion outlet of the mold is significantly reduced, and the waste gas entering the main pipeline is significantly reduced, which is beneficial to reducing the accumulation of oil scale. Description of the Drawings

[0010] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention. Among them:

[0011] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0012] Figure 2 is Figure 1 a three-dimensional structural schematic diagram from another perspective;

[0013] Figure 3 is a schematic diagram of the principle of waste gas collection in an embodiment of the present invention;

[0014] Figure 4 is Figure 3 the schematic diagram of the principle in the left view direction of;

[0015] Figure 5 is an exploded structural schematic diagram of the buffer tank in an embodiment of the present invention;

[0016] Figure 6 is a schematic diagram of the principle of waste gas collection in the prior art;

[0017] Figure 7 Yes Figure 6 Schematic diagram of the left - view direction.

[0018] In the figure: 1 - main pipeline; 2 - buffer tank; 21 - concave - shaped side plate; 22 - far side plate; 23 - bottom plate; 24 - top plate; 25 - cleaning port; 26 - U - shaped cover plate; 3 - first collection pipe; 4 - second collection pipe; 5 - oil drain pipe; 51 - oil drain valve; 6 - gas collection structure; 61 - gas collection pipe; 62 - gas collection port; 9 - die extrusion port; 91 - hose. Specific embodiments

[0019] The following further elaborates on the present utility model in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present utility model are described by way of illustration. Undoubtedly, those of ordinary skill in the art can recognize that, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the drawings and description are illustrative in nature and not used to limit the protection scope of the claims.

[0020] As Figures 1 to 5 As commonly shown, a waste gas collection device for hoses is used to collect waste gas at the die extrusion port 9, including a main pipeline 1. The main pipeline 1 is connected to a negative - pressure power source. The negative - pressure power source includes a negative - pressure fan, etc., which are well - known to those skilled in the art and will not be elaborated here and are not shown in the figure.

[0021] A gas collection structure 6 is provided above the die extrusion port 9. A buffer tank 2 is provided between the gas collection structure 6 and the main pipeline 1. The buffer tank 2 is airtight and is arranged in a concave shape. A first collection pipe 3 is provided between one end of the buffer tank 2 and the gas collection structure 6, a second collection pipe 4 is provided between the other end of the buffer tank 2 and the gas collection structure 6, and an oil drain pipe 5 is provided at the bottom of the buffer tank 2.

[0022] The buffer tank 2 has three functions in this embodiment. First, the flow channel in the buffer tank 2 is larger than that in the first collection pipe 3 and the second collection pipe 4, which can promote the slowdown of waste - gas flow. Second, the buffer tank 2 is integrally concave - shaped, and the first collection pipe 3 and the second collection pipe 4 are respectively connected to both ends of the buffer tank 2. The waste gas is equivalent to passing through a bend with a larger cross - sectional area, which can further promote the slowdown of waste - gas flow. Third, the surface area of the buffer tank 2 itself is larger, and the concave - shaped setting will further increase the surface area. The increase in the heat - dissipation area, combined with the significant slowdown of waste - gas flow in the buffer tank 2, enables most of the waste gas to condense at the buffer tank 2.

[0023] The buffer tank 2 in this embodiment includes two oppositely arranged concave-shaped side plates 21. A far side plate 22 is fixedly and hermetically arranged between the corresponding far edges of the two concave-shaped side plates 21. A bottom plate 23 is fixedly and hermetically arranged between the bottom edges of the two concave-shaped side plates 21. A top plate 24 is fixedly and hermetically arranged between the corresponding top edges of the two concave-shaped side plates 21. A cleaning opening 25 is formed between the two top plates 24 and the two concave-shaped side plates 21. A U-shaped cover plate 26 is buckled at the cleaning opening 25. Thus, when the U-shaped cover plate 26 is removed, it is easy to clean and maintain each side wall inside the buffer tank 2. And the setting of forming the cleaning opening 25 inside can release the space of other side plates of the buffer tank 2, so that the first collection pipe 3, the second collection pipe 4, and the oil discharge pipe 5 can all be directly welded to the buffer tank 2, which is beneficial to simplifying the manufacturing process. Of course, the fixed and hermetic connection between the far side plate 22, the top plate 24, the bottom plate 23 and the two concave-shaped side plates 21 is also preferably realized by welding.

[0024] Preferably, the bottom plate 23 is obliquely arranged so as to gradually decrease towards the oil discharge pipe 5, so as to promote the condensed oil liquid to flow to the oil discharge pipe 5 by itself. Of course, an oil discharge valve 51 can be arranged on the oil discharge pipe 5. Usually, the oil discharge valve 51 is closed, and the normal waste gas collection can be carried out in this embodiment; when the processing of the hose 91 stops and the waste gas collection stops, the oil discharge valve 51 is opened to discharge and collect the waste oil liquid. At this time, at least the first collection pipe 3 and the gas collection structure 6 can connect the buffer tank 2 and the external air pressure, so that the waste oil liquid can be discharged smoothly.

[0025] Preferably, the buffer tank 2 is located below the main pipeline 1, and the second collection pipe 4 is arranged vertically. Thus, the trace condensed oil liquid generated at the second collection pipe 4 can also flow back into the buffer tank 2, further promoting the collection of waste oil liquid.

[0026] In addition, the gas collection structure 6 in this embodiment includes a gas collection pipe 61 that is slidably sleeved with the first collection pipe 3. A gas collection port 62 is formed on the gas collection pipe 61 and faces the mold extrusion port 9. Thus, the gas collection structure 6 forms a telescopic type. This telescopic gas collection structure 6 can, on the one hand, facilitate the use of different-sized molds with different extended lengths, and on the other hand, can provide space for mold replacement after contraction.

[0027] In summary, in this embodiment, the buffer tank 2 is added before the waste gas enters the main pipeline 1. By using its increased channel area, the flow of the waste gas is slowed down, and by using the relatively large surface area of the tank body, the heat dissipation of the waste gas is promoted. Most of the waste gas is easily condensed into waste oil at the buffer tank 2. The waste oil automatically flows to the bottom of the buffer tank 2 under its own gravity and is discharged and collected through the oil discharge pipe 5, which is convenient for oil collection. The backflow of the waste oil to the extrusion outlet 9 of the mold is significantly reduced, and the waste gas entering the main pipeline 1 is significantly reduced, which is beneficial to reducing the accumulation of oil scale. In this embodiment, the buffer tank 2 is mainly added between the gas collection structure 6 and the main pipeline 1, and the structure is simple, which is convenient for direct improvement and use on the existing pipeline.

[0028] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only used to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A hose processing waste gas collection device, used to collect waste gas at the extrusion outlet of the mold, including a main pipe, the main pipe is connected to a negative pressure power, and is characterized in that: An air collecting structure is provided above the extrusion port of the die, a buffer box is provided between the air collecting structure and the main line, the buffer box is sealed and arranged in a concave shape, a first collecting pipe is provided between one end of the buffer box and the air collecting structure, a second collecting pipe is provided between the other end of the buffer box and the air collecting structure, and an oil drain pipe is provided at the bottom of the buffer box.

2. The hose processing exhaust gas collection device according to claim 1, characterized in that: The buffer box includes two oppositely arranged concave-shaped side panels, a distal plate is fixedly sealed between the distal edges corresponding to the two concave-shaped side panels, a bottom plate is fixedly sealed between the bottom edges of the two concave-shaped side panels, a top plate is fixedly sealed between the top edges corresponding to the two concave-shaped side panels, a cleaning port is formed between the two top plates and the two concave-shaped side panels, and a U-shaped cover plate is buckled at the cleaning port.

3. The hose processing exhaust gas collection device according to claim 2, characterized in that: The bottom plate is arranged in an oblique direction gradually descending toward the oil drain pipe.

4. The hose processing exhaust gas collection device according to claim 1, characterized in that: The buffer tank is located below the main pipe, and the second collecting pipe is arranged vertically.

5. The hose processing exhaust gas collection device according to claim 1, characterized in that: The gas collecting structure comprises a gas collecting pipe which is slidably fitted with the first collecting pipe, and a gas collecting port which is arranged toward the extrusion port of the die is opened on the gas collecting pipe.

Images