PLASTIC TANK WITH A CONNECTION DEVICE
A plastic tank having a connection device for the plastic tank. The connection device includes a connection nipple, composed of a low-emission material, which is to be inserted into or attached to, from the outside, an opening of a tank wall of the plastic tank. A counter-piece is arranged to lay flat against the inside of the tank wall around the opening. The connection nipple is connected by screw connection or clip connection to the counter-piece. A seal is arranged around the opening between the outside of the tank wall and a sealing face of the connection nipple that faces the outside of the tank wall.
1 . A plastic tank, comprising:
a tank body having a tank wall with an opening;
a connection device that includes a connection nipple that consists of a low-emission material, the connection nipple having a sealing face that faces an outer surface of the tank wall, the connection nipple being attached to the opening from outside of the tank wall;
a counter-piece arranged abut flatly against an inner surface of the tank wall around the opening, wherein the connection nipple is to the counter-piece via a screw connection; and
a seal arranged around the opening between the outer surface of the tank wall and the sealing face.
2 . The plastic tank of claim 1 , wherein the low-emission material consists of polyoxymethylene (POM).
3 . The plastic tank of claim 1 , wherein the counter-piece consists of polyoxymethylene.
4 . The plastic tank of claim 1 , wherein the counter-piece consists of high density polyethylene (HDPE).
5 . The plastic tank of claim 1 , wherein the counter-piece is sheathed with high density polyethylene (HDPE).
6 . The plastic tank of claim 1 , wherein the connection nipple is configured to connect a line.
7 . The plastic tank of claim 1 , wherein the connection nipple comprises a temperature sensor.
8 . The plastic tank of claim 1 , wherein the counter-piece is connected to the inner surface of the tank wall via a weld connection so as to lay flat against the tank wall around the opening.
9 . A plastic tank, comprising:
a tank body having a tank wall with an opening;
a connection device that includes a connection nipple that consists of a low-emission material, the connection nipple having a sealing face that faces an outer surface of the tank wall, the connection nipple being inserted into the opening from outside of the tank wall;
a counter-piece arranged abut flatly against an inner surface of the tank wall around the opening, wherein the connection nipple is to the counter-piece via a screw connection; and
a seal arranged around the opening between the outer surface of the tank wall and the sealing face.
10 . The plastic tank of claim 9 , wherein the low-emission material consists of polyoxymethylene (POM).
11 . The plastic tank of claim 9 , wherein the counter-piece consists of polyoxymethylene.
12 . The plastic tank of claim 9 , wherein the counter-piece consists of high density polyethylene (HDPE).
13 . The plastic tank of claim 9 , wherein the counter-piece is sheathed with high density polyethylene (HDPE).
14 . The plastic tank of claim 9 , wherein the connection nipple is configured to connect a line.
15 . The plastic tank of claim 9 , wherein the connection nipple comprises a temperature sensor.
16 . The plastic tank of claim 9 , further comprising a supporting sleeve arranged on the inside of the counter-piece.
17 . The plastic tank of claim 1 , wherein the counter-piece is hooked in at the inside of the tank wall.
18 . A method for manufacturing a plastic tank having a connection device, the method comprising:
thermoforming a plastic material to form the plastic tank while simultaneously welding a counter-piece to an inner surface of a tank wall;
arranging, after the thermoforming, a connection nipple from outside the plastic tank and then connecting the connection nipple to the counter-piece.
19 . The method of claim 18 , further comprising, after the thermoforming and before the arranging, forming opening in the tank wall, wherein the arranging comprises arranging the counter-piece through the opening from outside the plastic tank.
20 . The method of claim 18 , further comprising, after the thermoforming and before the arranging, applying a seal to the tank wall at a position of the counter-piece.