CN212242072U - Cooling device for plastic pipe production - Google Patents
Cooling device for plastic pipe production Download PDFInfo
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- CN212242072U CN212242072U CN202020961079.5U CN202020961079U CN212242072U CN 212242072 U CN212242072 U CN 212242072U CN 202020961079 U CN202020961079 U CN 202020961079U CN 212242072 U CN212242072 U CN 212242072U
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Abstract
The utility model provides a cooling device for plastic pipe production, belonging to the technical field of pipe production equipment, comprising a plurality of cooling water tanks which are arranged along the axial direction of the pipe at intervals, wherein the temperature of cooling water in the cooling water tanks is gradually decreased along the advancing direction of the pipe; the cooling water tanks are provided with pipe inlets and pipe outlets which are coaxially arranged; the air-cooled water boiler also comprises a circulating water pipe and an air-cooled box, wherein a circulating water pump and a heat exchange mechanism are arranged on the circulating water pipe; the air cooling box is arranged between two adjacent cooling water tanks, and a fan for blowing the pipes is arranged inside the air cooling box. The cooling device for producing the plastic pipes, provided by the utility model, can gradually exchange heat with cooling water with gradually decreased temperature, so that the cooling speed of the pipes can be increased, and the damage strength caused by too fast temperature reduction of the pipes can be avoided; the heat exchange mechanism ensures that the temperature of the cooling water in each cooling water tank is distributed in a step shape; the air cooling box can assist water cooling and accelerate the cooling speed of the pipe.
Description
Technical Field
The utility model belongs to the technical field of tubular product production facility, more specifically say, relate to a cooling device is used in production of plastics tubular product.
Background
The plastic pipe is generally extruded and formed in extrusion equipment, the temperature of the formed pipe is high, the pipe needs to be cooled, and the structural strength of the cooled pipe is enhanced; in the prior art, the temperature is mostly reduced by a water cooling mode, and the pipe is contacted with water by adopting a spraying or soaking mode to generate heat exchange; the cooling speed is not easy to control by adopting a water cooling mode, when the water temperature is higher, the cooling speed of the pipe is slow, and the water temperature is too low, so that the cooling speed of the pipe is too high, and the structure of the pipe is damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cooling device is used in production of plastics tubular product aims at solving the technical problem that cooling rate is difficult to control in the tubular product cooling process.
In order to achieve the above object, the utility model adopts the following technical scheme: the cooling device for producing the plastic pipes comprises a plurality of cooling water tanks which are arranged along the axial direction of the pipes at intervals and used for loading cooling water with different temperatures, wherein the temperatures of the cooling water in the cooling water tanks are gradually decreased along the advancing direction of the pipes; the plurality of cooling water tanks are provided with pipe inlets and pipe outlets, and the pipe inlets and the pipe outlets of the plurality of cooling water tanks are coaxially arranged; the plurality of pipe inlets and the plurality of pipe outlets are respectively provided with a sealing structure for preventing cooling water from leaking; the water inlet of the circulating water pipe is communicated with the bottom of the cooling water tank, and the water outlet of the circulating water pipe is communicated with the top of the cooling water tank; the circulating water pipe is provided with a circulating water pump for driving cooling water to flow in the circulating water pipe; the circulating water pipe is also provided with a heat exchange mechanism for adjusting the temperature of the cooling water; and the air cooling boxes are arranged between every two adjacent cooling water tanks, and a fan used for blowing the pipes is arranged in each air cooling box.
As another embodiment of the present application, the sealing structure includes a first sealing structure disposed at the tube inlet and a second sealing structure disposed at the tube outlet; the first sealing structure comprises a first sleeve, a first sealing ring and a first valve, the first sleeve and the pipe inlet are coaxially arranged, one end of the first sleeve is used for being in sealing connection with the side wall of the cooling water tank, and the other end of the first sleeve is a free end; a plurality of first sealing rings are arranged at intervals along the axial direction of the first sleeve, the outer rings of the first sealing rings are all in sealing connection with the inner wall of the first sleeve, and the inner rings are all used for being in sliding connection with the outer wall of the pipe; the first valve is arranged between the first sealing ring and the pipe inlet and used for plugging the first sleeve;
the second sealing structure comprises a second sleeve, a second sealing ring and a second valve, the second sleeve and the pipe outlet are coaxially arranged, one end of the second sleeve is used for being in sealing connection with the side wall of the cooling water tank, and the other end of the second sleeve is a free end; the second valve is arranged on the second sleeve and used for plugging the second sleeve; the second sealing ring is arranged along the axial interval of the second sleeve and is provided with a plurality of second sealing rings, the second sealing rings are arranged between the pipe outlet and the second valve, the outer walls of the second sealing rings are hermetically connected with the inner wall of the second sleeve, and the inner rings are slidably connected with the outer wall of the pipe.
As another embodiment of the present application, the first valve comprises a first gate valve and the second valve comprises a second gate valve.
As another embodiment of the present application, the first valve includes a first ball valve, and a spool aperture of the first ball valve is greater than or equal to an outer diameter of the pipe, so that the pipe passes through the spool of the first ball valve; the second valve comprises a second ball valve, and the hole diameter of a valve core of the second ball valve is larger than or equal to the outer diameter of the pipe, so that the pipe penetrates through the valve core of the second ball valve.
As another embodiment of the present application, the first sealing ring includes a first silicone ring, an outer ring of the first silicone ring is connected to an inner wall of the first sleeve in a sealing manner, an inner ring of the first silicone ring is smaller than an outer diameter of the pipe, and the pipe can prop open the inner ring of the first silicone ring, so that the inner ring of the first silicone ring is in close contact with an outer wall of the pipe;
the second sealing ring comprises a second silica gel ring, the outer ring of the second silica gel ring is in sealing connection with the inner wall of the second sleeve, the inner ring is smaller than the outer diameter of the pipe, and the pipe can stretch the inner ring of the second silica gel ring so that the inner ring of the second silica gel ring is in close contact with the outer wall of the pipe.
As another embodiment of the application, a filtering component is arranged on the circulating water pipe to filter out solid impurities in the cooling water.
As another embodiment of this application, the position that cooling water tank's lateral wall is close to the top is equipped with first drain port, the one end of first drain pipe intercommunication, the other end intercommunication sewage collection device of first drain pipe.
As another embodiment of this application, the bottom of forced air cooling case is equipped with the second outlet, the one end of second drain pipe is communicate to the second outlet, the other end of second drain pipe with sewage collection device intercommunication.
As another embodiment of this application, the bottom of forced air cooling case is established to the infundibulate, and the small-bore end is used for with the second drain pipe intercommunication.
As another embodiment of the present application, a first water collecting hopper is arranged below the pipe inlet of a first one of the cooling water tanks in the traveling direction of the pipes, and is used for collecting cooling water leaked from the pipe inlet; and a second water collecting hopper is arranged below the pipe outlet of the last cooling water tank and used for collecting cooling water leaked from the pipe outlet.
The utility model provides a cooling device for plastic pipe production's beneficial effect lies in: compared with the prior art, the cooling device for producing the plastic pipes has the advantages that after the pipes are extruded and formed, the pipes sequentially pass through the plurality of cooling water tanks to exchange heat with cooling water in the plurality of cooling water tanks, the temperature of the cooling water in the plurality of cooling water tanks is gradually decreased along the advancing direction of the pipes, and the pipes gradually exchange heat with the cooling water with the decreased temperature, so that the cooling speed of the pipes can be increased, and the damage strength caused by too fast temperature reduction of the pipes can be avoided;
the circulating water pump on the circulating water pipe drives the water in the cooling water tank to flow in the circulating water pipe, the temperature of the cooling water is increased after the cooling water exchanges heat with the pipe, the cooling water exchanges heat with the heat exchange mechanism in the circulating water pipe, the temperature of the cooling water is reduced, and the heat exchange mechanism can also ensure that the temperature of the cooling water in each cooling water tank is distributed in a step shape;
the air cooling box is arranged between the two adjacent cooling water tanks, air is blown through the fan to cool the pipe, and the air cooling mode can assist water cooling, so that the cooling speed of the pipe is increased, and the cooling speed of the pipe cannot be too high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a cooling device for plastic pipe production according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a cooling device for plastic pipe production according to another embodiment of the present invention;
fig. 3 is a schematic structural view of a cooling device for plastic pipe production according to another embodiment of the present invention;
fig. 4 is a schematic structural view of a cooling device for plastic pipe production according to yet another embodiment of the present invention;
in the figure:
1. a cooling water tank;
2. a circulating water pipe; 21. a water circulating pump; 22. a heat exchange mechanism; 23. a filter assembly;
3. an air cooling box; 4. a fan;
5. a first seal structure; 51. a first sleeve; 52. a first seal ring; 53. a first valve;
6. a second seal structure; 61. a second sleeve; 62. a second valve; 63. a second seal ring;
7. a first drain pipe; 8. a second drain pipe; 9. a sewage collection device; 10. a pipe.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a cooling device for plastic pipe production according to the present invention will now be described. The cooling device for producing the plastic pipe comprises a plurality of cooling water tanks 1 which are arranged at intervals along the axial direction of the pipe 10 and used for loading cooling water with different temperatures, wherein the temperature of the cooling water in the cooling water tanks 1 is gradually reduced along the advancing direction of the pipe 10; the plurality of cooling water tanks 1 are respectively provided with a pipe 10 inlet and a pipe 10 outlet, and the pipe 10 inlets and the pipe 10 outlets of the plurality of cooling water tanks 1 are coaxially arranged; sealing structures for preventing cooling water from leaking are arranged at the inlets of the pipes 10 and the outlets of the pipes 10;
the cooling water system further comprises a circulating water pipe 2 and an air cooling box 3, wherein a water inlet of the circulating water pipe 2 is communicated with the bottom of the cooling water tank 1, and a water outlet of the circulating water pipe 2 is communicated with the top of the cooling water tank 1; the circulating water pipe 2 is provided with a circulating water pump 21 for driving cooling water to flow in the circulating water pipe 2; the circulating water pipe 2 is also provided with a heat exchange mechanism 22 for adjusting the temperature of the cooling water; the air cooling box 3 is arranged between two adjacent cooling water tanks 1, and a fan 4 used for blowing the pipe 10 is arranged in the air cooling box.
Compared with the prior art, the cooling device for plastic pipe production provided by the utility model has the advantages that after the pipe 10 is extruded, the pipe sequentially passes through the plurality of cooling water tanks 1 to be subjected to heat exchange with cooling water in the plurality of cooling water tanks 1, the temperature of the cooling water in the plurality of cooling water tanks 1 is gradually decreased along the advancing direction of the pipe 10, the pipe 10 is subjected to heat exchange with the cooling water with gradually decreased temperature gradually, the cooling speed of the pipe 10 can be accelerated, and the damage strength caused by too fast temperature reduction of the pipe 10 can be avoided;
the circulating water pump 21 on the circulating water pipe 2 drives the water in the cooling water tanks 1 to flow in the circulating water pipe 2, the temperature of the cooling water is increased after the cooling water exchanges heat with the pipe 10, the cooling water exchanges heat with the heat exchange mechanism 22 in the circulating water pipe 2 to reduce the temperature of the cooling water, and the heat exchange mechanism 22 can also ensure that the temperature of the cooling water in each cooling water tank 1 is distributed in a step shape;
the air cooling box 3 arranged between the two adjacent cooling water tanks 1 blows air to cool the pipe 10 through the fan 4, and the air cooling mode can assist water cooling, so that the cooling speed of the pipe 10 is increased, and the cooling speed of the pipe 10 cannot be too high.
After the cooling water exchanges heat with the pipe 10, the temperature rises, so the heat exchange mechanism 22 is specifically a cooling mechanism, and can be set as a cooling pipe, the cooling pipe is communicated with the circulating water pipe 2, the cooling water flows in the cooling pipe, the cooling pipe is wrapped by the refrigerating device, and the heat of the cooling water is rapidly reduced in the recooling pipe.
A thermometer may be provided in the circulating water pipe 2 or the cooling water tanks 1 to precisely control the temperature of the cooling water in each cooling water tank 1.
As a specific embodiment of the cooling device for plastic pipe production provided by the present invention, please refer to fig. 2 and 3, the sealing structure includes a first sealing mechanism 5 disposed at the inlet of the pipe 10 and a second sealing mechanism 6 disposed at the outlet of the pipe 10;
the first sealing mechanism 5 comprises a first sleeve 51, a first sealing ring 52 and a first valve 53, the first sleeve 51 is coaxially arranged with the inlet of the pipe 10, one end of the first sleeve 51 is hermetically connected with the side wall of the cooling water tank 1, and the other end is a free end; a plurality of first sealing rings 52 are arranged at intervals along the axial direction of the first sleeve 51, the outer rings of the plurality of first sealing rings 52 are all in sealing connection with the inner wall of the first sleeve 51, and the inner rings are all used for being in sliding connection with the outer wall of the pipe 10; after entering the first sleeve 51, the pipe 10 moves along the axial direction of the first sleeve 51, the outer wall of the pipe 10 is in close contact with the first sealing ring 52, and water in the cooling water tank 1 is blocked by the first sealing rings 52 in multiple ways after entering the first sleeve 51, so that leakage is reduced; the first valve 53 is arranged between the first sealing ring 52 and the inlet of the pipe 10 and is used for plugging the first sleeve 51;
before the pipe 10 enters the first sleeve 51, the first valve 53 is in a closed state, water in the cooling water tank 1 cannot leak through the first sleeve 51, after the end of the pipe 10 enters the first sleeve 51, the end of the pipe firstly contacts the first sealing ring 52, sealing is formed between the outer wall of the pipe 10 and the first sealing ring 52, then the first valve 53 is opened, and the pipe 10 enters the cooling water tank 1.
The second sealing structure 6 comprises a second sleeve 61, a second sealing ring 63 and a second valve 62, the second sleeve 61 and the outlet of the pipe 10 are coaxially arranged, one end of the second sleeve is used for being in sealing connection with the side wall of the cooling water tank 1, and the other end of the second sleeve is a free end; the second valve 62 is arranged on the second sleeve 61 and used for plugging the second sleeve 61; a plurality of second sealing rings 63 are arranged at intervals along the axial direction of the second sleeve 61, the plurality of second sealing rings 63 are all arranged between the outlet of the pipe 10 and the second valve 62, the outer walls of the plurality of second sealing rings 63 are all connected with the inner wall of the second sleeve 61 in a sealing manner, and the inner rings are all used for being connected with the outer wall of the pipe 10 in a sliding manner;
before the pipe 10 passes through the cooling water tank 1, the second valve 62 is in a closed state, water in the cooling water tank 1 cannot leak through the second sleeve 61, after the pipe 10 passes through the cooling water tank 1 and enters the second sleeve 61, the outer wall of the pipe 10 is firstly sealed with the second sealing ring 63, then the second valve 62 is opened, and the pipe 10 passes through the second sleeve 61 and enters the air cooling box 3.
Referring to fig. 3, the valve may also be configured as a ball valve, wherein the first valve 53 includes a first ball valve, and the second valve 62 includes a second ball valve, and the bore diameter of the spool of the first ball valve is greater than or equal to the outer diameter of the pipe 10, so that the pipe 10 passes through the spool of the first ball valve; the valve core aperture of the second ball valve is larger than or equal to the outer diameter of the pipe 10, so that the pipe 10 passes through the valve core of the second ball valve.
As a specific implementation manner of the embodiment of the present invention, referring to fig. 2 and fig. 3, the first sealing ring 52 includes a first silica gel ring, an outer ring of the first silica gel ring is connected to an inner wall of the first sleeve 51 in a sealing manner, an inner ring of the first silica gel ring is smaller than an outer diameter of the pipe 10, and when the pipe 10 moves axially, the inner ring of the first silica gel ring can be spread, so that the inner ring of the first silica gel ring is in close contact with an outer wall of the pipe 10;
the second sealing ring 63 includes a second silicone ring, an outer ring of the second silicone ring is connected with an inner wall of the second sleeve 61 in a sealing manner, an inner ring of the second silicone ring is smaller than an outer diameter of the pipe 10, and the pipe 10 can support the inner ring of the second silicone ring so that the inner ring of the second silicone ring is in close contact with an outer wall of the pipe 10.
As a specific implementation of the embodiment of the utility model discloses please refer to and show fig. 4, the position that the lateral wall of coolant tank 1 is close to the top is equipped with first drainage port, the one end of first drainage pipe 7 of first drainage pipe intercommunication, the other end intercommunication sewage collection device 9 of first drainage pipe 7, circulating pipe 2 pours into like the cooling water into coolant tank 1 into, after the height of first drainage port was reachd to the liquid level of cooling water, the cooling water that is located the top liquid level flowed from first drainage port, during the outflow, the impurity that will float at the liquid level is taken out, reduce the solid impurity in the cooling water.
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 4, the bottom of the air cooling box 3 is provided with a second water outlet, the second water outlet communicates with one end of the second water discharging pipe 8, the other end of the second water discharging pipe 8 communicates with the sewage collecting device 9, after the cooling water in the cooling water tanks 1 at the two sides of the air cooling box 3 leaks through the pipe 10 inlet and the pipe 10 outlet, the cooling water enters the air cooling box 3, is collected at the bottom of the air cooling box 3, and is discharged into the sewage collecting device 9 from the second water outlet via the second water discharging pipe 8, so as to prevent the cooling water from leaking and flowing around to pollute the work site.
Preferably, the bottom of the air cooling box 3 is funnel-shaped, the small-caliber end is used for communicating with the second drain pipe 8, and after the cooling water leaks to the air cooling box 3, the cooling water is quickly collected and discharged from the bottom of the air cooling box 3.
As a specific implementation manner of the embodiment of the present invention, a first water collecting hopper is arranged below the pipe 10 inlet of the first cooling water tank 1 along the traveling direction of the pipe 10, and is used for collecting the cooling water leaked from the pipe 10 inlet; and a second water collecting hopper is arranged below the outlet of the pipe 10 of the last cooling water tank 1 and used for collecting cooling water leaked from the outlet of the pipe 10 and preventing the cooling water from flowing in a working site.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The cooling device for producing the plastic pipes is characterized by comprising a plurality of cooling water tanks which are arranged along the axial direction of the pipes at intervals and used for loading cooling water with different temperatures, wherein the temperatures of the cooling water in the cooling water tanks are gradually reduced along the advancing direction of the pipes; the plurality of cooling water tanks are provided with pipe inlets and pipe outlets, and the pipe inlets and the pipe outlets of the plurality of cooling water tanks are coaxially arranged; the plurality of pipe inlets and the plurality of pipe outlets are respectively provided with a sealing structure for preventing cooling water from leaking; further comprising:
a water inlet of the circulating water pipe is communicated with the bottom of the cooling water tank, and a water outlet of the circulating water pipe is communicated with the top of the cooling water tank; the circulating water pipe is provided with a circulating water pump for driving cooling water to flow in the circulating water pipe; the circulating water pipe is also provided with a heat exchange mechanism for adjusting the temperature of the cooling water;
and the air cooling boxes are arranged between every two adjacent cooling water tanks, and a fan used for blowing the pipes is arranged in each air cooling box.
2. The cooling device for plastic pipe production according to claim 1, wherein the sealing structure comprises a first sealing structure provided at the pipe inlet and a second sealing structure provided at the pipe outlet;
the first seal structure includes:
the first sleeve is coaxially arranged with the pipe inlet, one end of the first sleeve is used for being hermetically connected with the side wall of the cooling water tank, and the other end of the first sleeve is a free end;
the first sealing rings are arranged at intervals along the axial direction of the first sleeve, the outer rings of the first sealing rings are all in sealing connection with the inner wall of the first sleeve, and the inner rings are all in sliding connection with the outer wall of the pipe;
the first valve is arranged between the first sealing ring and the pipe inlet and used for plugging the first sleeve;
the second seal structure includes:
the second sleeve is coaxially arranged with the pipe outlet, one end of the second sleeve is used for being hermetically connected with the side wall of the cooling water tank, and the other end of the second sleeve is a free end;
the second valve is arranged on the second sleeve and used for plugging the second sleeve;
the second sealing ring is arranged along the axial interval of the second sleeve and is provided with a plurality of second sealing rings, the second sealing rings are arranged between the pipe outlet and the second valve, the outer walls of the second sealing rings are hermetically connected with the inner wall of the second sleeve, and the inner rings are slidably connected with the outer wall of the pipe.
3. The cooling device for plastic pipe production as claimed in claim 2, wherein the first valve comprises a first gate valve and the second valve comprises a second gate valve.
4. The cooling device for plastic pipe production according to claim 2, wherein the first valve comprises a first ball valve, and the bore diameter of a valve core of the first ball valve is larger than or equal to the outer diameter of the pipe, so that the pipe passes through the valve core of the first ball valve; the second valve comprises a second ball valve, and the hole diameter of a valve core of the second ball valve is larger than or equal to the outer diameter of the pipe, so that the pipe penetrates through the valve core of the second ball valve.
5. The cooling device for plastic pipe production according to claim 2, wherein the first sealing ring comprises a first silicone ring, an outer ring of the first silicone ring is connected with an inner wall of the first sleeve in a sealing manner, an inner ring of the first silicone ring is smaller than an outer diameter of the pipe, and the pipe can prop open the inner ring of the first silicone ring so that the inner ring of the first silicone ring is in close contact with an outer wall of the pipe;
the second sealing ring comprises a second silica gel ring, the outer ring of the second silica gel ring is in sealing connection with the inner wall of the second sleeve, the inner ring is smaller than the outer diameter of the pipe, and the pipe can stretch the inner ring of the second silica gel ring so that the inner ring of the second silica gel ring is in close contact with the outer wall of the pipe.
6. The cooling device for plastic pipe production as claimed in claim 1, wherein the circulating water pipe is provided with a filtering assembly for filtering solid impurities in the cooling water.
7. The cooling device for plastic pipe production according to any one of claims 1 to 6, wherein a first drainage port is provided on a side wall of the cooling water tank near the top, the first drainage port communicates with one end of a first drainage pipe, and the other end of the first drainage pipe communicates with a sewage collecting device.
8. The cooling device for plastic pipe production according to claim 7, wherein a second water outlet is provided at the bottom of the air cooling box, the second water outlet is communicated with one end of a second water drainage pipe, and the other end of the second water drainage pipe is communicated with the sewage collecting device.
9. The cooling device for plastic pipe production as claimed in claim 8, wherein the bottom of the air cooling box is funnel-shaped, and the small-caliber end is used for communicating with the second drain pipe.
10. The cooling device for plastic pipe production according to claim 1, wherein a first water collecting hopper for collecting cooling water leaking from the pipe inlet is provided below the pipe inlet of a first one of the cooling water tanks in a traveling direction of the pipe; and a second water collecting hopper is arranged below the pipe outlet of the last cooling water tank and used for collecting cooling water leaked from the pipe outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020961079.5U CN212242072U (en) | 2020-05-29 | 2020-05-29 | Cooling device for plastic pipe production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020961079.5U CN212242072U (en) | 2020-05-29 | 2020-05-29 | Cooling device for plastic pipe production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212242072U true CN212242072U (en) | 2020-12-29 |
Family
ID=73977514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020961079.5U Active CN212242072U (en) | 2020-05-29 | 2020-05-29 | Cooling device for plastic pipe production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212242072U (en) |
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2020
- 2020-05-29 CN CN202020961079.5U patent/CN212242072U/en active Active
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