Environment-friendly dust removal device for cable extruder

Abstract

The invention relates to the technical field of cable extruders, and provides an environment-friendly dust removal device for a cable extruder, which comprises a cooling box, a gap is formed between the liquid level of cooling water and a top plate at the upper part of the cooling box, and an exhaust pipe is arranged at the upper end of one side, far away from the extruder, of the cooling box; the venturi ejector is provided with an air inlet, a liquid inlet and an ejection opening, the air inlet is connected with an external high-pressure air source, the liquid inlet is communicated with the interior of the cooling box and used for the venturi ejector to suck cooling water, the ejection opening extends to the position above the liquid level of the cooling water and points to a top plate on the upper portion of the cooling box, and the cooling water ejected by the ejection opening is sputtered and atomized on the top plate; the second-stage treatment box is arranged on the top plate of the cooling box, the interior of the second-stage treatment box is used for containing water, the exhaust pipe is communicated with the interior of the second-stage treatment box, and a port of the exhaust pipe is located in the water in the second-stage treatment box. By means of the technical scheme, the problem that in the existing dust removal technology, the dust removal effect on the cooling box is not ideal is solved.

Description

Technical Field

[0001] This invention relates to the field of cable extruder technology, and in particular to an environmentally friendly dust removal device for cable extruders. Background Technology

[0002] After the cable extruder extrudes the sheath, the cable enters a cooling box for cooling. Because the temperature of the freshly extruded cable is high, it undergoes intense vaporization upon entering the cooling box, causing a large amount of water vapor to rise. As the water vapor rises, it carries up the fine dust adhering to the cable surface, forming white smoke—water vapor carrying dust upwards. The dust generated here needs to be collected and treated. The existing treatment method involves collecting the water vapor and guiding it through a long path to a dust removal device for processing. This processing path is long and requires cooling and stabilizing the water vapor. Corrosion and leakage are prone to occur along the path, resulting in unsatisfactory dust removal effects.

[0003] The cable entering the cooling box produces white smoke mixed with a lot of dust. However, the existing dust removal technology is not effective enough for the cooling box, and a more efficient dust removal method is needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an environmentally friendly dust removal device for cable extruders, which addresses the above-mentioned technical deficiencies and solves the problem of unsatisfactory dust removal effect in the cooling box in the existing dust removal technology.

[0005] The technical solution adopted in this invention is as follows: An environmentally friendly dust removal device for a cable extruder is provided, comprising a cooling tank, cooling water inside the cooling tank, a cable passing through the cooling tank, a gap between the cooling water level and the top plate of the cooling tank, and an exhaust pipe at the upper end of the cooling tank on the side away from the extruder; characterized in that it further comprises: A Venturi injector has an air inlet, a liquid inlet, and a spray nozzle. The air inlet is connected to an external high-pressure air source, and the liquid inlet is connected to the interior of the cooling tank for drawing in cooling water. The spray nozzle extends above the surface of the cooling water and points towards the top plate of the upper part of the cooling tank. The cooling water sprayed from the spray nozzle is atomized and splashed on the top plate. A secondary treatment tank is installed on the top plate of the cooling tank and is used to contain water. The upper part of the secondary treatment tank has a pressure stabilizing pipe for venting. The venting pipe is connected to the interior of the secondary treatment tank, and the port of the venting pipe is located in the water inside the secondary treatment tank.

[0006] Further optimization of this technical solution also includes: A guide tube is installed inside the cooling tank, with an inner diameter larger than the outer diameter of the cable. The cable passes through the inside of the guide tube, and the liquid inlet is connected to the inside of the guide tube.

[0007] To further optimize this technical solution, the end of the guide tube near the extruder has an annular flow-limiting cover, and the cable passes through the flow-limiting cover into the guide tube.

[0008] To further optimize this technical solution, a heat conduction arrangement is made between the secondary processing tank and the top plate of the cooling tank, and the water inside the secondary processing tank is used to cool the top plate.

[0009] To further optimize this technical solution, the secondary treatment tank has an inlet pipe and an outlet pipe, and the interior contains flowing water.

[0010] To further optimize this technical solution, the Venturi injector and the guide tube constitute a cooling and dust removal unit. The cooling and dust removal unit includes two Venturi injectors. In the transverse direction and perpendicular to the axis of the guide tube, the guide tube is located between the two Venturi injectors, and the liquid inlet of both Venturi injectors is connected to the inside of the guide tube.

[0011] To further optimize this technical solution, several cooling and dust removal units are arranged at intervals inside the cooling box in the direction of cable movement within the cooling box.

[0012] To further optimize this technical solution, the Venturi injector is tilted, and the injection port is tilted in the direction of the side where the cable moves out of the cooling box.

[0013] The beneficial effects of this invention are as follows: 1. The Venturi sprayer disperses cooling water from the cooling tank into a mist-like droplet shape, which is then further atomized upon impact and splashing on the top plate. The atomized water then descends, adsorbing dust carried by water vapor and drawing it into the cooling water. This allows for rapid processing of large quantities of dust, reducing its outward flow and improving processing efficiency. Dust carried by water vapor discharged through the exhaust pipe can also be adsorbed and removed by water in the secondary treatment tank.

[0014] 2. A Venturi injector is used. The external high-pressure air source is either low-temperature or ambient-temperature air. When the high-speed air is injected into the Venturi injector, cooling water is drawn into the injector. The air and water mix, which cools the cooling water. After the cooling water is sprayed out of the nozzle, it hits the top plate and splashes into smaller droplets, which fall back into the cooling water in the cooling tank. While removing dust, the water temperature is lowered, which can better cool the cables. The external low-temperature air source is fully utilized to reduce dust and cool the cables at the same time.

[0015] 3. The cooling water in the cooling box is in a flowing state, flowing from the side where the cable exits to the side where the cable enters, and finally the dust flows out for filtration and collection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial structural diagram of the cooling and dust removal unit of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure from the right side view of the present invention; The markings in the diagram are as follows: 1. Cooling box; 101. Exhaust pipe; 102. Top plate; 2. Venturi injector; 201. Air inlet; 202. Liquid inlet; 203. Injection port; 3. Secondary treatment box; 301. Pressure stabilizing pipe; 302. Water inlet pipe; 303. Water outlet pipe; 4. Flow guide pipe; 401. Flow limiting cover; 5. Cooling and dust removal unit. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] To keep the drawings concise, each figure only schematically shows the parts relevant to the invention, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] like Figure 1-3 As shown, an environmentally friendly dust removal device for a cable extruder includes a cooling tank 1, with cooling water inside the cooling tank 1. The cable passes through the cooling tank 1, and there is a gap between the liquid level of the cooling water and the top plate 102 at the top of the cooling tank 1. The upper end of the cooling tank 1 on the side away from the extruder has an exhaust pipe 101; it also includes: The Venturi injector 2 has an air inlet 201, a liquid inlet 202, and a spray nozzle 203. The air inlet 201 is connected to an external high-pressure air source, and the liquid inlet 202 is connected to the interior of the cooling tank 1 for drawing in cooling water. The spray nozzle 203 extends above the surface of the cooling water and points towards the top plate 102 on the upper part of the cooling tank 1. The cooling water sprayed from the spray nozzle 203 is atomized and splashed on the top plate 102. The secondary treatment tank 3 is installed on the top plate 102 of the cooling tank 1 and is used to contain water. The upper part of the secondary treatment tank 3 has a pressure stabilizing pipe 301 for venting. The vent pipe 101 is connected to the interior of the secondary treatment tank 3, and the port of the vent pipe 101 is located in the water inside the secondary treatment tank 3.

[0022] In use, the cooling box 1 is located next to the extrusion head of the cable extruder. The cable is extruded from the extrusion head of the extruder and enters the cooling box 1 for cooling. The cable enters from the left side of the cooling box 1 and exits from the right side. Inside the cooling box 1, cooling water flows in from the right side and flows out from the left side, immersing the cable for cooling. In the figure, conventional settings such as rollers for cable rolling support are omitted. The high-pressure air source and Venturi injector 2 in the plant allow the high-pressure air source to enter the Venturi injector 2 at high speed. The air source draws in the coolant from the cooling tank 1 through the inlet 202 and then disperses the coolant into large droplets through the nozzle 203. The nozzle 203 is higher than the surface of the cooling water to avoid affecting the spray speed. The atomized droplets are large droplets, which can adsorb the dust carried by the water vapor. The large droplets are then sprayed upwards and finally hit the top plate 102. After the impact, the atomization is further enhanced, reducing the droplet volume and expanding the coverage area. The small droplets after splashing fall naturally under gravity, adsorbing dust during the fall and carrying the dust into the cooling water, which plays a role in dust suppression. Most of the dust can be collected in the cooling tank 1 and discharged from the cooling tank 1 under the flow of cooling water. The cooling water can be filtered externally and reused.

[0023] When the water is atomized by impacting the top plate 102, small water droplets will gather on the top plate 102, then gradually gather into large raindrops, and finally drip into the cooling water below. The atomization is mostly in the form of small water droplets, which can fall naturally by gravity, thus playing a role in dust suppression.

[0024] Some of the smoke and dust still flow with the water vapor to the exhaust pipe 101, and enter the secondary treatment box 3 above through the exhaust pipe 101. The exhaust pipe 101 extends into the water in the secondary treatment box 3, and the smoke and dust enter the water again to be adsorbed and removed. Finally, the gas is discharged from the pressure stabilizing pipe 301, which plays a role in stabilizing the pressure.

[0025] The exhaust pipe 101 is connected to the secondary treatment box 3 through an inverted "U" shaped pipe, which can prevent backflow.

[0026] The exhaust pipe 101 is located on the right side of the cooling tank 1, that is, away from the side where the cable enters. The pressure regulating pipe 301 is located on the left side, that is, on the side of the secondary treatment tank 3 away from the exhaust pipe 101, so that the gas has sufficient time to flow in the water within the secondary treatment tank 3.

[0027] The Venturi injector 2 utilizes an external high-pressure air source, which is either low-temperature or ambient-temperature air. When mixed with coolant, it can cool the coolant. When the coolant comes into contact with a hot cable, it will heat up rapidly. After being sprayed by the Venturi injector 2, it can reduce dust and cool the water at the same time, thus improving the cooling efficiency of the cooling water.

[0028] Furthermore, it also includes: a guide pipe 4, which is disposed inside the cooling box 1, with an inner diameter larger than the outer diameter of the cable, the cable passing through the inside of the guide pipe 4, and the liquid inlet 202 communicating with the inside of the guide pipe 4.

[0029] During use, the Venturi injector 2 draws coolant from the guide tube 4 through the guide tube 4, which can accelerate the flow of cooling water in the guide tube 4. The cable passes through the guide tube 4 and there is a certain gap between it and the inner wall of the guide tube 4, which ensures sufficient water for heat conduction. At the same time, it can make the cooling water around the cable flow fully in the limited space, improve the contact efficiency between the cable and the cooling water, and improve the cooling efficiency.

[0030] Furthermore, the end of the guide tube 4 near the extruder has an annular flow restrictor 401, through which the cable passes into the guide tube 4.

[0031] In use, the end of the guide pipe 4 closest to the extruder is the left end, i.e., the side where the cable enters the guide pipe 4. A flow-limiting cap 401 is installed to block flow between the guide pipe 4 and the left side. When the Venturi injector 2 draws cooling water from the guide pipe 4, more cooling water comes from the right side, and the cooling water temperature on the right side is relatively lower than that on the left. To further improve the blocking effect, a flexible cloth or similar material can be placed inside the flow-limiting cap 401. The cable passes through the flexible cloth into the guide pipe 4, resulting in good flow restriction.

[0032] Furthermore, a heat conduction arrangement is provided between the secondary processing tank 3 and the top plate 102 on the upper part of the cooling tank 1, and the water inside the secondary processing tank 3 is used to cool the top plate 102.

[0033] The secondary treatment tank 3 has an inlet pipe 302 and an outlet pipe 303, and the inside contains flowing water.

[0034] During use, the water in the secondary treatment tank 3 can also be used as cooling water to cool the top plate 102. The cooling effect is achieved when the droplets sprayed by the Venturi injector 2 collide with and come into contact with the top plate 102, as well as when small water droplets accumulate on the top plate 102. When water vapor comes into contact with the top plate 102, it can liquefy the water, collect water droplets, and adsorb dust.

[0035] The water in the secondary treatment tank 3 is flowing water, which enters from the inlet pipe 302 on the right and flows out from the outlet pipe 303 on the left. The flowing water maintains the low temperature of the top plate 102. There is a gap between the top plate 102 and the cooling water in the cooling tank 1. The internal cooling water cannot quickly cool the top plate 102. Furthermore, the cooling tank 1 needs to be designed with a top-opening structure, meaning that the top plate 102 can be lifted, which affects the heat transfer between the top plate 1 and the lower part of the cooling tank 1.

[0036] Furthermore, the Venturi injector 2 and the guide tube 4 constitute a cooling and dust removal unit 5. The cooling and dust removal unit 5 includes two Venturi injectors 2. In the transverse direction and perpendicular to the axis of the guide tube 4, the guide tube 4 is located between the two Venturi injectors 2. The liquid inlet 202 of both Venturi injectors 2 are connected to the inside of the guide tube 4.

[0037] In the direction of cable movement within the cooling box 1, a plurality of cooling and dust removal units 5 are spaced apart within the cooling box 1.

[0038] In use, the cooling and dust removal unit 5 has a Venturi injector 2 installed on each side of the guide pipe 4, which can make full use of the internal space of the cooling box 1 to make the atomization dust removal range more comprehensive. The liquid inlet 202 of the two Venturi injectors 2 are connected to the guide pipe 4, so the rate at which coolant is drawn out from the guide pipe 4 is greater, which accelerates the flow of coolant around the cable.

[0039] Inside the cooling box 1, multiple cooling and dust removal units 5 are arranged at intervals along the direction of cable movement, which can make the atomized dust removal coverage area wider, improve the dust removal effect, and increase the flow speed of coolant around the cable.

[0040] The increase in coolant flow rate needs to be set in conjunction with thermal conductivity. When the coolant flows faster, no additional coolant is used for circulation. After the coolant is atomized and sprayed out by the Venturi injector 2, it cools down and returns to the coolant.

[0041] Furthermore, the Venturi injector 2 is inclined, and the injection port 203 is inclined in the direction of the side where the cable moves out of the cooling box 1.

[0042] When in use, the nozzle 203 of the Venturi injector 2 is tilted upwards towards the top plate 102 and tilted to the right, that is, towards the side where the cable is removed (the side where the cable is removed refers to the direction, not the right end of the cooling tank 1, meaning the Venturi injector 2 is not tilted towards the right end of the cooling tank 1). This means that after the Venturi injector 2 atomizes and sprays the cooling water to lower the temperature, it falls into the cooler cooling water on the right side and can continue to participate in cooling.

[0043] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. An environmentally friendly dust removal device for a cable extruder, comprising a cooling tank (1), cooling water inside the cooling tank (1), a cable passing through the cooling tank (1), a gap between the liquid level of the cooling water and the top plate (102) of the upper part of the cooling tank (1), and an exhaust pipe (101) at the upper end of the side of the cooling tank (1) away from the extruder; characterized in that, Also includes: The Venturi injector (2) has an air inlet (201), a liquid inlet (202) and a spray nozzle (203). The air inlet (201) is connected to an external high-pressure air source, and the liquid inlet (202) is connected to the interior of the cooling tank (1) for the Venturi injector (2) to draw in cooling water. The spray nozzle (203) extends above the surface of the cooling water and points towards the top plate (102) on the upper part of the cooling tank (1). The cooling water sprayed from the spray nozzle (203) is atomized by splashing on the top plate (102). The secondary treatment tank (3) is located on the top plate (102) of the cooling tank (1) and is used to contain water. The upper part of the secondary treatment tank (3) has a pressure stabilizing pipe (301) for venting. The vent pipe (101) is connected to the interior of the secondary treatment tank (3), and the port of the vent pipe (101) is located in the water inside the secondary treatment tank (3).

2. The environmentally friendly dust removal device for a cable extruder according to claim 1, characterized in that, Also includes: A guide pipe (4) is installed inside the cooling box (1), with an inner diameter larger than the outer diameter of the cable. The cable passes through the inside of the guide pipe (4), and the liquid inlet (202) is connected to the inside of the guide pipe (4).

3. The environmentally friendly dust removal device for a cable extruder according to claim 2, characterized in that, The guide tube (4) has an annular flow restrictor (401) at one end near the extruder, and the cable passes through the flow restrictor (401) into the guide tube (4).

4. The environmentally friendly dust removal device for a cable extruder according to claim 1, characterized in that, The secondary processing tank (3) and the top plate (102) on the upper part of the cooling tank (1) are connected by heat conduction. The water inside the secondary processing tank (3) is used to cool the top plate (102).

5. The environmentally friendly dust removal device for a cable extruder according to claim 4, characterized in that, The secondary treatment tank (3) has an inlet pipe (302) and an outlet pipe (303), and the interior contains flowing water.

6. The environmentally friendly dust removal device for a cable extruder according to claim 2, characterized in that, The Venturi injector (2) and the guide tube (4) constitute a cooling and dust removal unit (5). The cooling and dust removal unit (5) includes two Venturi injectors (2). In the transverse direction and perpendicular to the axis of the guide tube (4), the guide tube (4) is located between the two Venturi injectors (2). The liquid inlet (202) of the two Venturi injectors (2) is connected to the inside of the guide tube (4).

7. The environmentally friendly dust removal device for a cable extruder according to claim 6, characterized in that, In the direction of cable movement within the cooling box (1), a plurality of cooling and dust removal units (5) are provided at intervals within the cooling box (1).

8. The environmentally friendly dust removal device for a cable extruder according to claim 1, characterized in that, The Venturi injector (2) is tilted, and the nozzle (203) is tilted in the direction of the side where the cable moves out of the cooling box (1).

Images