混流泵是利用叶轮旋转产生的离心力和推力联合作用工作，斜向出流，又称斜流泵，有蜗式（卧式）和导叶式（立式）两种。当原动机带动叶轮旋转后，对液体的作用既有离心力又有轴向推力，是离心泵和轴流泵的综合，液体斜向流出叶轮。因此它是介于离心泵和轴流泵之间的一种泵。混流泵的比转速高于离心泵，低于轴流泵，一般在300-500之间。它的扬程比轴流泵高，但流量比轴流泵小，比离心泵大。拍门 具有流道正向单向开启和反向关闭的作用。配重式 拍门 借助于配重的平衡作用，
Mixed flow pump is the use of centrifugal force and impeller thrust generated by the joint action of the impeller, oblique out flow, also known as oblique flow pump, there are snail (horizontal) and guide vane (vertical) two kinds. When the prime mover drives the impeller to rotate, the centrifugal force and axial thrust are combined to the liquid, which is the synthesis of centrifugal pump and axial flow pump, and the liquid is inclined out of the impeller. Therefore, it is a pump between centrifugal pump and axial pump. The specific speed of mixed flow pump is higher than that of centrifugal pump, lower than that of axial flow pump, usually between 300-500. Its head is higher than the axial flow pump, but the flow is smaller than the axial flow pump, larger than the centrifugal pump. The flap gate has the function of forward unidirectional opening and reverse closing of the flow passage. Counterweight beating door is balanced by counterweight,
在水流的作用下使门页自动开启或关闭，或稍加外力作用使门页开启或关闭；浮箱式
The door is opened or closed automatically under the action of water flow, or the door is opened or closed by a little external force; the floating box is opened or closed
拍门 则利用门页在水中的浮力，在水流的作用下使门页开启或关闭。
The flap door utilizes the buoyancy of the door page in the water and opens or closes the door page under the action of the flow.
用途/安装说明
Use / installation instructions
拍门安装使用注意事项：
Points for attention in installation and use of racket door:
1、拍门安装可以与法兰连接，可预埋，也可永插；
1, the installation of the door can be connected with the flange, can be embedded, can also be permanently inserted;
2、配重拍门使用时，如果正向水力不足，不能开启门页，可根据安装位置需要设置不等重量的配重装置；
2, the use of counterweight beat door, if the forward hydraulic insufficient, can not open the door page, according to the installation position need to set unequal weight counterweight device;
3、多台拍门安装时，如因起吊条件限制需分号安装，应注意标记，因每台拍门的门座和门页连接属偶配，不能互换；
3, the installation of more than one door, such as lifting conditions for the need for semicolon installation, attention should be paid to mark, because each beat door door and door page connection is a pair, can not be interchanged;
4、穿墙管安装轴线与水平方向的夹角应大于或等于零度；
4. The angle between the installation axis of the through wall pipe and the horizontal direction should be greater than or equal to zero;
5、拍门安装后，门座与门页间有3mm左右的间隙属正常现象，当门页受到反向回流水压时，间隙会减少；
5, the door is installed, and the clearance between the portal page about 3mm is a normal phenomenon, when the page is a reverse flow of water pressure, the gap will be reduced;
6、为防止拍门铰链轴销松脱，拍门在安装后必须将铰链轴处的锁紧螺钉对准铰链轴槽锁紧，再将螺母并紧，并定期检查以防造成危险。型槽模具 一次性止血带 保定水处理设备 一次性止血带 保定空压机 北京真空泵
6. In order to prevent the loosening of the hinge pin of the swing door, the locking bolt of the hinge shaft must be locked at the hinge shaft groove after installation, and then the nut is tightened tightly and checked regularly to prevent the danger.
7、本公司目前生产的拍门主要适用于单向流水的圆形出水口，如用户需要适用于方形出水口的拍门可向本公司定做。
7, the current production of the door is mainly applicable to one-way water circular water outlet, such as the user needs for square water outlet door can be customized to our company.