Vacuumizing device of exhaust extruder

Abstract

A vacuumizing device of an exhaust extruder comprises a rack, a water tank and a water ring vacuum pump, the water tank and the water ring vacuum pump are arranged on the rack, an oil-water separator is mounted in the water tank, a vacuumizing exhaust seat of an extruder barrel is connected with the oil-water separator through a connecting pipe, and the water ring vacuum pump is connected with the oil-water separator through an air inlet pipe. An exhaust pipe is arranged at the upper end of the water tank and connected with the water-ring vacuum pump, the water tank is provided with an exhaust port, an overflow port and a drain outlet, and a cooling pipe internally provided with cooling water is wound in the water tank. The exhaust device is reasonable and compact in structure, good in exhaust effect, small in occupied space and low in cost, and waste gas collection and water circulation are integrated.

Description

Technical Field

[0001] This utility model belongs to the field of polymer material processing machinery technology, and relates to a vacuum device for an exhaust extruder. Background Technology

[0002] Plastic vented extruders are suitable for materials with high moisture content. The barrel of the plastic vented extruder is equipped with an exhaust port, which can remove moisture and some volatile oils from the raw materials, so that the extruded products can eliminate adverse reactions such as bubbles and pits.

[0003] For extruders requiring high exhaust efficiency, a vacuum device is used at the exhaust port to create a negative pressure environment at the barrel exhaust port, effectively removing moisture and other harmful substances. Extruder exhaust vacuuming typically uses a water ring vacuum pump; however, water ring vacuum pumps require continuous water replenishment, and the exhaust gas contains a significant amount of wastewater that needs to be collected and treated. This necessitates a complex exhaust gas collection system. Furthermore, the exhaust gas from plastic extruders contains a large amount of oil and other organic matter, and the temperature is very high. Without oil-water separation and cooling, these substances can damage the water ring vacuum pump. Additionally, the high temperature of the exhaust gas from plastic extruders necessitates cooling by a water tank.

[0004] Therefore, a vacuum device needs to be designed to achieve the effects of water circulation and waste gas collection and purification. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a vacuuming device for an exhaust extruder with a reasonable and compact structure and good performance, in view of the above-mentioned technical status.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a vacuum device for an exhaust extruder, characterized in that: it includes a frame, a water tank and a water ring vacuum pump installed on the frame, an oil-water separator is installed in the water tank, the vacuum exhaust seat of the extruder barrel is connected to the oil-water separator through a connecting pipe, the water ring vacuum pump is connected to the oil-water separator through an air inlet pipe, an exhaust pipe is provided at the upper end of the water tank and connected to the water ring vacuum pump, the water tank is provided with an exhaust port, an overflow port and a drain port, and a cooling pipe containing cooling water is coiled inside the water tank.

[0007] As an improvement, the frame includes a base plate and a platform, with a water tank mounted on the platform, a water ring vacuum pump mounted on the base plate and located on the left side of the water tank, and an oil-water separator in the form of a sleeve-like structure with openings at the front and back, and the oil-water separator being horizontally installed inside the lower part of the water tank near the left side.

[0008] Furthermore, the lower front and rear sides of the water tank are provided with circular openings through which the front and rear ends of the oil-water separator pass. The front and rear ends of the oil-water separator have folded edges that abut against the outer walls of the openings. Front and rear cover plates are provided at the front and rear openings of the oil-water separator, and the front and rear cover plates are fixed to the edges by bolts.

[0009] Furthermore, the front cover of the oil-water separator is provided with a connector and an air inlet pipe that are connected to the connecting pipe and the air inlet pipe, wherein the inner end of the air inlet pipe extends to the rear side near the oil-water separator.

[0010] Furthermore, the cooling pipe is a copper pipe, which is coiled inside the water tank and located on the right side of the oil-water separator. The right side of the water tank is provided with a cooling pipe inlet, a cooling pipe outlet, and a cooling water inlet, and valves are provided at the cooling pipe inlet, cooling pipe outlet, and cooling water inlet.

[0011] Furthermore, a water pipe is provided on the left side of the water tank, which is connected to the inlet of the water ring vacuum pump. A float valve is provided inside the water tank, and a water tank cover is provided at the top of the water tank. An exhaust port is opened on the water tank cover, and a filter cotton is provided at the exhaust port.

[0012] Finally, the overflow port is located on the upper right side of the water tank, and the drain port is located on the bottom right side of the water tank. Valves are provided at both the overflow port and the drain port.

[0013] Compared with existing technologies, the advantages of this invention are as follows: An oil-water separator is installed inside the water tank. The oil-water separator is connected to the vacuum exhaust seat of the extruder via a connecting pipe and to a water ring vacuum pump via an air inlet pipe. The exhaust gas from the vacuum pump returns to the water tank, where it undergoes oil-water separation and cooling before being discharged. This achieves a water circulation and exhaust gas collection and purification effect. The water tank not only stores water but also functions as an exhaust gas collection tank. Cooling pipes are installed inside the water tank to cool the high-temperature exhaust gas. Both ends of the oil-water separator can be opened for easy cleaning. This invention has a reasonable and compact structure, good exhaust effect, and integrates exhaust gas collection and water circulation, occupying little space and having a low cost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0015] Figure 2 for Figure 1 Top view. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1 , 2As shown, a vacuum device for an exhaust extruder includes a frame 1, a water tank 2 mounted on the frame 1, and a water ring vacuum pump 3. An oil-water separator 4 is installed inside the water tank 2. The vacuum exhaust seat 8 of the extruder barrel 7 is connected to the oil-water separator 4 via a connecting pipe 9. The water ring vacuum pump 3 is connected to the oil-water separator 4 via an air inlet pipe 31. An exhaust pipe 32 is provided at the upper end of the water tank 2 and connected to the water ring vacuum pump 3. The water tank 1 is provided with an exhaust port 201, an overflow port 21, and a drain port 22. A cooling pipe 5 containing cooling water is coiled inside the water tank 2.

[0018] The specific structure is as follows: Frame 1 includes a base plate and a platform. Water tank 2 is placed on the platform. Water ring vacuum pump 3 is placed on the base plate and located to the left of water tank 2. Oil-water separator 4 is a sleeve-shaped structure with openings at the front and rear. Oil-water separator 4 is horizontally installed inside the lower part of water tank 2, near the left side. Circular openings are provided on the front and rear sides of the lower part of water tank 2 for the front and rear ends of oil-water separator 4 to pass through. The front and rear ends of oil-water separator 4 have folded edges that abut against the outer walls of the openings. Front and rear cover plates 41 and 42 are provided at the front and rear openings of oil-water separator 4, and the front and rear cover plates 41 and 42 are fixed to the edges with bolts. Connector a and air inlet pipe b are provided on the front cover plate 41 of oil-water separator 4, which are connected to connecting pipe 9 and air inlet pipe 31. The inner end of air inlet pipe b extends to the rear side near oil-water separator 4.

[0019] Cooling pipe 5 is made of copper and is coiled inside water tank 2, located to the right of oil-water separator 4. The right side of water tank 2 has a cooling pipe inlet 51, a cooling pipe outlet 52, and a cooling water inlet 53. Valves are installed at the cooling pipe inlet 51, cooling pipe outlet 52, and cooling water inlet 53. A water supply pipe 33 is located on the left side of water tank 2 and connected to a water ring vacuum pump 3. A float valve 6 is installed inside water tank 2. A water tank cover 20 is located at the top of water tank 2, and an exhaust port 201 is located on the water tank cover 20. Filter cotton is installed at the exhaust port 201.

[0020] Overflow port 21 is located on the upper right side of water tank 2, and drain port 22 is located on the bottom right side of water tank 2. Valves are provided at overflow port 21 and drain port 22.

[0021] The working principle is as follows:

[0022] The extruder vacuum exhaust seat 8 is connected to the oil-water separator 4 via a connecting pipe 9. The oil-water separator 4 is then connected to the water ring vacuum pump 3 via an air inlet pipe 31. The water ring vacuum pump 3 then discharges the pre-purified gas containing moisture into the water tank 2 via an exhaust pipe 32. The high-temperature oily waste gas extracted from the plastic extruder enters the oil-water separator 4. After cooling, the oil and other organic substances condense, and the purified air is discharged through the exhaust port 201, achieving the effect of water circulation and waste gas collection and purification.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A vacuum device for an exhaust extruder, characterized in that: It includes a frame, a water tank mounted on the frame, and a water ring vacuum pump. An oil-water separator is installed inside the water tank. The vacuum exhaust seat of the extruder barrel is connected to the oil-water separator through a connecting pipe. The water ring vacuum pump is connected to the oil-water separator through an air inlet pipe. An exhaust pipe is provided at the top of the water tank and connected to the water ring vacuum pump. The water tank is equipped with an exhaust port, an overflow port, and a drain port. Cooling pipes containing cooling water are coiled inside the water tank.

2. The vacuum pumping device according to claim 1, characterized in that: The frame includes a base plate and a platform. The water tank is set on the platform. The water ring vacuum pump is set on the base plate and located on the left side of the water tank. The oil-water separator has a sleeve-like structure with openings at the front and back. The oil-water separator is horizontally installed inside the water tank at the lower part near the left side.

3. The vacuum pumping device according to claim 2, characterized in that: The lower front and rear sides of the water tank have circular openings for the front and rear ends of the oil-water separator to pass through. The front and rear ends of the oil-water separator have folded edges that abut against the outer walls of the openings. Front and rear cover plates are provided at the front and rear openings of the oil-water separator, and the front and rear cover plates are fixed to the edges by bolts.

4. The vacuum pumping device according to claim 3, characterized in that: The front cover of the oil-water separator is provided with a connector and an air inlet pipe that are connected to the connecting pipe and the air inlet pipe, wherein the inner end of the air inlet pipe extends to the rear side near the oil-water separator.

5. The vacuum pumping device according to claim 4, characterized in that: The cooling pipe is made of copper and is coiled inside the water tank and located on the right side of the oil-water separator. The right side of the water tank is provided with a cooling pipe inlet, a cooling pipe outlet, and a cooling water inlet. Valves are provided at the cooling pipe inlet, cooling pipe outlet, and cooling water inlet.

6. The vacuum pumping device according to any one of claims 1 to 5, characterized in that: The water tank has a water pipe on its left side that connects to the inlet of the water ring vacuum pump. The water tank is equipped with a float valve and a water tank cover at the top. The exhaust port is located on the water tank cover and is equipped with filter cotton.

7. The vacuum pumping device according to any one of claims 1 to 5, characterized in that: The overflow outlet is located on the upper right side of the water tank, and the drain outlet is located on the bottom right side of the water tank. Valves are provided at both the overflow outlet and the drain outlet.

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