塑料检查井系统外观结构形式
Appearance structure form of plastic inspection well system
对市场产品结构进行归纳，具体有4种结构，各有优势：
There are 4 structures for market product structure, each has its own advantages.
1、井座主体无筋，支管撑口有筋（第1种）
1, the main body of the well body is not reinforced, and the supporting pipe has first bars.
特点：
Characteristic：
（1）模具套模易实现，比单独一套模具生产成本相对低；
(1) the die set is easy to realize, and the production cost is lower than that of a single mold.
（2）接管承口强度相对较好、井座椭圆度相对好控制；
(2) the strength of the nozzle is relatively good, and the ellipticity of the well seat is relatively good.
（3）井身强度相对差一些，对模具冷却要求高。
(3) the relative strength of the wellbore is relatively poor, which requires high cooling for the mould.
2、井座主体外表有筋，接管承口无筋（第2种）
2, the main body of the well body is stiffened, and the nozzles of the nozzles are not reinforced (second kinds).
特点：
Characteristic：
（1）模具套模易实现，模具投入成本低；
(1) the die set is easy to realize, and the cost of mold input is low.
（2）井身强度相对较高，井筒承口椭圆度大；
(2) the wellbore strength is relatively high, and the wellbore port ellipticity is large.
（3）缺点：接口承口椭圆度难控制，对模具冷却要求高。
(3) drawback: the ellipticity of the interface socket is difficult to control, and the mold cooling requirement is high.
3、井座主体、接管承口都有筋（第3种）
3, the main body of the well body and the port of the nozzle are all reinforced (third kinds).
特点：
Characteristic：
（1）井身、接管承口强度相对较好、椭圆度相对好控制；
(1) the strength of well body and nozzle is relatively good, and the ellipticity is relatively good.
（2）缺点是模具套模实现困难，模具投入成本较高。
(2) the drawback is that it is difficult to realize the die set and the cost of mold input is high.
4、井座主体、接管承口都有筋，底部加筋（第4种）
4, the main body of the well body and the port of the nozzle are all reinforced, and the bottom is reinforced (fourth kinds).
（1）底部加筋，能够提高落锤抗冲击能力；
(1) bottom reinforcement can improve the impact resistance of drop hammer.
（2）产品表面加筋，能够提高荷载能力，易达到标准要求；
(2) surface reinforcement can improve the load capacity, access to standard requirements;
（3）承插口底部加筋，能够提高安装时与管材端口接平，生产时减少收缩。
(3) the reinforcement at the bottom of the socket can raise the connection between the port and the pipe end and reduce shrinkage during production.
（4）模具套模易实现，结构轻化，重量比同行减轻3%
(4) the die set is easy to realize, the structure is lighter and the weight is reduced by 3% compared with the counterparts.