Exhaust and dehumidification screw material pipe group

Abstract

The utility model relates to an exhaust dehumidification screw material pipe group, a screw comprises a conveying pipeline and a screw body arranged at the axis of the conveying pipeline, an exhaust valve is arranged on the conveying pipeline corresponding to the front end of the screw body, the exhaust valve is detachably installed on the side wall of the conveying pipeline, the upper end and the lower end of the exhaust valve are communicated, and the exhaust valve is detachably installed on the side wall of the conveying pipeline. The pipe diameter of one end, close to the conveying pipeline, of the exhaust valve is smaller than that of one end away from the conveying pipeline. Through the structure of the screw rod, the pressure of the melt on the double-screw-flight section is large, at the moment, the exhaust valve is arranged, gas can be directly exhausted into the atmosphere from the exhaust valve, the melt can be prevented from rushing out of the exhaust valve through the channel structure with the small lower portion and the large upper portion, and therefore safety is guaranteed, and raw materials are not wasted.

Description

Technical Field

[0001] The utility model relates to the field of fluid transportation, in particular to an exhaust dehumidification screw material pipe group. Background Art

[0002] In the process of fluid transportation, gas and liquid often mix. For liquids with low viscosity, a gas-liquid separation valve can be used to separate gas and liquid. However, most existing gas-liquid separation valves have complex structures and high costs.

[0003] Therefore, there is a need in the art for a simple device for achieving gas separation during the transportation of low-viscosity fluids. Summary of the invention

[0004] The purpose of the utility model is to provide an exhaust dehumidification screw material pipe group in order to overcome the defects of the above-mentioned prior art.

[0005] The purpose of this application is also to provide the application of the above-mentioned gas-liquid separation valve.

[0006] In order to achieve the purpose of the utility model, the present application provides the following technical solutions.

[0007] In a first aspect, the present application provides an exhaust dehumidification screw material pipe group, which includes a conveying pipe and a screw body arranged at the axis of the conveying pipe, and is characterized in that an exhaust valve is provided on the conveying pipe corresponding to the front end of the screw body, and the exhaust valve is detachably installed on the side wall of the conveying pipe. The upper and lower ends of the exhaust valve are connected, and the diameter of the exhaust valve at one end close to the conveying pipe is smaller than the diameter of the end away from the conveying pipe.

[0008] In one embodiment of the first aspect, the exhaust valve includes a support seat, the bottom of the support seat is fixed to the side wall of the delivery pipe by bolts, the bottom and top of the support seat are connected, and the top is connected to the atmosphere.

[0009] In an implementation manner of the first aspect, the exhaust valve comprises a cover plate, and a side edge of the cover plate is connected to the top of the support seat via a rotating shaft.

[0010] In an implementation of the first aspect, a three-way catalytic converter is disposed in the center of the cover plate.

[0011] In an implementation manner of the first aspect, a handle is provided on a side of the cover plate opposite to the rotating shaft.

[0012] In one embodiment of the first aspect, the screw unit includes a feeding section, a diverter shuttle section, a double screw section and a metering section arranged in sequence from the rear end to the front end; along the axial feeding direction of the screw unit, the screw thread width of the feeding section gradually decreases, the lead gradually increases, and the minor diameter gradually increases, the screw thread lead and minor diameter of the metering section gradually increase, and an exhaust valve is arranged at a position corresponding to the double screw section on the material pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The structure of the screw causes the melt to have a higher pressure in the double-screw section. At this time, an exhaust valve is provided so that the gas can be directly discharged from the exhaust valve to the atmosphere. In addition, by providing a channel structure with a small bottom and a large top, the melt can be prevented from rushing out of the exhaust valve, thereby ensuring safety and preventing the waste of raw materials.

[0015] (2) A cover plate is provided, and a three-way catalytic converter is provided inside the cover plate, which can volatilize water vapor to avoid the phenomenon of white mist at the outlet of the exhaust valve, and can purify the exhaust gas to avoid polluting the atmosphere;

[0016] (3) The melt accumulated in the exhaust valve can be easily cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the exhaust dehumidification screw tube group in this application;

[0018] Figure 2 This is a schematic diagram of the structure of the exhaust valve after closing in this application;

[0019] Figure 3 This is a schematic diagram of the structure of the exhaust valve after opening in this application;

[0020] Figure 4 This is a schematic diagram of the structure of the support seat of this application;

[0021] Figure 5 This is a schematic diagram of the structure of the cover plate of this application.

[0022] In the accompanying drawings, 1 is an exhaust valve, 11 is a support seat, 12 is a cover plate, 13 is a rotating shaft, 14 is a three-way catalytic converter, 15 is a handle, 16 is an exhaust channel, 17 is a bolt, 2 is a screw, 21 is a feeding section, 22 is a double screw section, and 3 is a conveying pipeline. DETAILED DESCRIPTION

[0023] Unless otherwise defined, the technical or scientific terms used in this specification and claims shall have the ordinary meanings understood by persons having ordinary skills in the technical field to which the present invention belongs. All the values ​​from the lowest value to the highest value listed herein refer to all the values ​​obtained by incrementing one unit between the lowest value and the highest value when the difference between the lowest value and the highest value is more than two units.

[0024] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be noted that in the specific description of these embodiments, for the sake of concise description, this specification cannot provide a detailed description of all the features of the actual embodiments. Without departing from the spirit and scope of the present invention, those skilled in the art may modify and replace the embodiments of the present invention, and the resulting embodiments are also within the scope of protection of the present invention.

[0025] In a specific embodiment, the present application provides an exhaust dehumidification screw material pipe group, wherein the screw includes a conveying pipe and a screw body arranged at the axis of the conveying pipe, and is characterized in that an exhaust valve is provided on the conveying pipe corresponding to the front end of the screw body, and the exhaust valve is detachably installed on the side wall of the conveying pipe, and the upper and lower ends of the exhaust valve are connected, and the diameter of the exhaust valve at the end close to the conveying pipe is smaller than the diameter of the end away from the conveying pipe. The raw material melts in the conveying pipe, and when it reaches the exhaust valve position, the molten raw material is diluted and baked to turn the moisture into gas and discharge from the exhaust valve. Through the second stage of secondary compression, the melt is made denser and the mixing is more uniform, and the moisture is discharged again, and the water vapor is evaporated by the heat energy of the material pipe. Through the heat radiation and secondary compression of the molten plastic, the purpose of dehumidification is achieved, the drying equipment is eliminated, and the electricity bill and equipment investment are saved. Since the exhaust dehumidification screw tube assembly of the present application is for low-viscosity melts, when the melt is transported to the top of the screw, the gas and liquid have been basically separated. As long as an outlet is set, the gas can be easily separated from the melt. Therefore, the present application only sets a simple exhaust valve to discharge the gas into the atmosphere. However, in order to avoid the melt being taken out of the conveying pipeline during gas discharge, the present application sets the exhaust valve to a structure with a large top and a small bottom, giving the melt a buffer space, so that it adheres to the inner wall of the exhaust valve and finally flows back into the conveying pipeline under the action of gravity.

[0026] In a specific embodiment, the exhaust valve includes a support seat, the bottom of the support seat is fixed to the side wall of the delivery pipeline by bolts, the bottom and top of the support seat are connected, and the top is connected to the atmosphere.

[0027] In a specific embodiment, the exhaust valve includes a cover plate, and one side of the cover plate is connected to the top of the support seat through a rotating shaft. When the screw is not in use, the melt solidifies and adheres to the exhaust valve. The cover plate is set to an openable and closable structure, which can facilitate the removal of this part of the solidified raw material to avoid contamination of subsequent products.

[0028] In a specific embodiment, a three-way catalytic converter is provided in the center of the cover plate. When the gas is discharged from the screw to the outside, the air pressure drops sharply from high pressure, and the water vapor will condense to produce white mist. Although the white mist is not too dangerous to people, it is not beautiful for a production workshop to emit white mist all the time. Therefore, the utility model adds a three-way catalytic converter in the cover plate. Since the entire exhaust valve is fixedly installed on the conveying pipeline, and the exhaust valve is made of metal, the temperature of the entire exhaust valve (including the three-way catalytic converter) is relatively high. During the rising process, the white mist contacts the high-temperature three-way catalytic converter and is reheated and vaporized, solving the problem of emitting white mist. In addition, in addition to water vapor, the discharged gas is also mixed with some volatile harmful gases. If it is directly discharged into the atmosphere, it will endanger the health of the staff. The three-way catalytic converter used in this application can effectively remove this part of the harmful gas, thereby avoiding environmental pollution. The three-way catalytic converter used in this application can be provided with metal screens above and below, and the existing three-way catalyst can be placed in the middle.

[0029] In a specific embodiment, a handle is provided on the side of the cover plate opposite to the rotating shaft.

[0030] In a specific embodiment, the screw unit includes a feeding section and a double-screw section arranged in sequence from the rear end to the front end; along the axial feeding direction of the screw unit, the thread width of the feeding section gradually decreases, the lead gradually increases, and the minor diameter gradually increases, and an exhaust valve is arranged at a position corresponding to the double-screw section on the material pipe. This arrangement can ensure that the pressure of the material gradually increases during the conveying process (mainly during the stroke of the feeding section), so that gas-liquid separation can be achieved at the exhaust valve.

[0031] Example

[0032] The following will describe in detail an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiment.

[0033] Example 1

[0034] An exhaust dehumidification screw tube group, the structure of which is as follows Figure 1As shown, it mainly includes a conveying pipeline 3, a screw 2 arranged inside the conveying pipeline 3, and an exhaust valve 1 fixed to the side wall of the conveying pipeline 3. The screw 2 is sequentially arranged with a feeding section 21 and a double-screw section 22 from the rear end to the front end. The screw 2 and the conveying pipeline 3 used in this embodiment are both prior arts.

[0035] The exhaust valve 1 includes a support seat 11 and a cover plate 12 fixed on the support seat through a rotating shaft 13, wherein the center of the support seat 11 is connected at both ends to form an exhaust passage 16 that is smaller at the bottom and larger at the top. The bottom of the support seat 11 is fixed to the side wall of the delivery pipe 33 by bolts 17, and the exhaust valve 1 is located at the top of the delivery pipe 33. The center of the cover plate 12 is also hollow, and at least one layer of three-way catalytic converter 14 is arranged therein, and a handle 15 is arranged on the other side of the cover plate 12.

[0036] When the exhaust dehumidification screw material pipe group 2 is running, the solid particles are melted and transported forward with the screw 2 to form a mixture of melt and gas, and the pressure gradually increases. When transported to the double screw section 22, an exhaust valve is set on the conveying pipeline 3. Since the viscosity of the melt is small, the gas and liquid are easily separated, and the gas can be directly discharged from the exhaust valve. A small amount of melt ejected upward with the gas settles in the exhaust channel 16 and flows back into the conveying pipeline 3. The rising gas is heated and degraded by the high-temperature three-way catalytic converter 14 and discharged into the atmosphere, avoiding the generation of white fog and reducing pollution.

[0037] The above description of the embodiments is to facilitate those of ordinary skill in the art to understand and apply the present application. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without having to pay creative labor. Therefore, the present application is not limited to the embodiments herein, and improvements and modifications made by those skilled in the art based on the contents disclosed in the present application without departing from the scope and spirit of the present application are within the scope of the present application.

Claims

1. An exhaust dehumidification screw material pipe group, the screw material pipe group comprises a conveying pipeline and a screw body arranged at the axis of the conveying pipeline, characterized in that: An exhaust valve is provided on the conveying pipeline corresponding to the front end of the screw body. The exhaust valve is detachably mounted on the side wall of the conveying pipeline. The upper and lower ends of the exhaust valve are connected, and the diameter of the exhaust valve at one end close to the conveying pipeline is smaller than the diameter of the end away from the conveying pipeline.

2. The exhaust dehumidification screw feed pipe assembly according to claim 1, characterized in that: The exhaust valve comprises a support seat, the bottom of which is fixed to the side wall of the delivery pipeline by bolts, the bottom and top of the support seat are connected, and the top is connected to the atmosphere.

3. The exhaust dehumidification screw feed pipe assembly according to claim 2, characterized in that: The exhaust valve comprises a cover plate, and a side edge of the cover plate is connected to the top of the support seat through a rotating shaft.

4. The exhaust dehumidification screw feed pipe assembly according to claim 3, characterized in that: A three-way catalytic converter is arranged in the center of the cover plate.

5. The exhaust dehumidification screw material pipe assembly according to claim 3, characterized in that: A handle is provided on the cover plate at one side opposite to the rotating shaft.

6. The exhaust dehumidification screw tube assembly according to any one of claims 1 to 5, characterized in that: The screw body includes a feeding section and a double-screw section arranged in sequence from the rear end to the front end; along the axial feeding direction of the screw body, the thread width of the feeding section gradually decreases, the lead gradually increases, and the minor diameter gradually increases, and an exhaust valve is arranged on the material pipe at a position corresponding to the double-screw section.

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