CN202805404U - Middle-sized centrifugal nodular cast iron pipe cement coating and lining machine - Google Patents

Abstract

The utility model relates to a medium-sized cement lining machine for centrifugal ductile iron pipes, which belongs to the technical field of lining cement for centrifugal ductile iron pipes; The supporting wheel set and the driven supporting wheel set, the stop wheel is installed on the side end of the frame near the driven supporting wheel set, the middle supporting wheel set is installed between the driving supporting wheel set and the driven supporting wheel set, and the active supporting wheel set A pressure wheel is respectively installed above the wheel group, the intermediate supporting wheel group and the driven supporting wheel group, and each pressure wheel is controlled to lift by a hydraulic cylinder; the utility model adds a group of supporting wheels between the two groups of supporting wheels and the pressing wheels. Wheels and pressure rollers make it small in runout, stable in operation and good in lining quality when performing cement lining high-speed rotation, not only making the lining quality of medium-sized ductile iron pipes better, but also lining two specifications of DN300 and DN350 Ductile Iron Pipe, expanding the range of lining types.

Description

A medium-sized centrifugal ductile iron pipe cement lining machine

technical field

The utility model relates to a medium-sized centrifugal ductile iron pipe cement lining machine, which belongs to the technical field of centrifugal ductile iron pipe lining cement. the

Background technique

In order to meet the requirements of urban sanitary water supply, prevent rust and other harmful substances from polluting tap water and prevent pipeline corrosion, when ductile iron pipes are used in urban water supply pipelines, the inner wall generally needs to be coated with cement mortar lining. There are usually two methods of coating cement mortar lining for ductile iron pipes: spraying and centrifugal lining, and the centrifugal lining is the most widely used method in various casting pipe factories. The surface of the cement mortar lining coated by the method is smooth, uniform and flat, has high bonding strength with the pipe wall, is not easy to fall off, and has a high degree of production mechanization. Therefore, the ISO-4179 standard stipulates that the inner wall of pressure pipes and non-pressure pipes must be coated with cement lining by centrifugal lining method, and has made clear regulations on the quality of cement lining. the

Ductile iron pipes are lined using specially designed cement lining machines. The existing medium-sized cement lining machine is designed with two sets of support rollers and pressure roller devices, which can only line medium-sized centrifugal ductile iron pipes of DN400-800, and the quality is not ideal when lining DN400 and DN500 ductile iron pipes. The two pipe types of DN300 and DN350 cannot be lined at all. the

Utility model content

The utility model overcomes the shortcomings of the prior art, and the technical problem to be solved is to provide a medium-sized centrifugal ductile iron pipe cement lining machine with good lining quality and a wide range of lining types. the

In order to solve the above technical problems, the technical solution adopted by the utility model is: a medium-sized centrifugal ductile iron pipe cement lining machine, including a frame, a stepping conveyor, a driving supporting wheel group, a driven supporting wheel group, an intermediate support The wheel group, the pressure roller and the retaining wheel, the stepping conveyor is installed under the frame, the driving supporting wheel group and the driven supporting wheel group are installed on the frame, the shaft end of the driving supporting wheel group is fixed with a pulley, and the pulley passes through The belt is connected to the motor shaft of the variable frequency motor, and a retaining wheel is installed on the side end of the frame close to the driven supporting wheel group, and an intermediate supporting wheel group is installed between the driving supporting wheel group and the driven supporting wheel group. The supporting roller group, the intermediate supporting roller group and the driven supporting roller group are all composed of two supporting rollers symmetrically installed on the frame. Wheels, each pressure wheel is controlled by a hydraulic cylinder to lift. the

The supporting rollers of the driving supporting roller group and the driven supporting roller group are composed of three rubber-mounted wheels, and the supporting rollers of the intermediate supporting roller group are composed of two rubber-mounted rollers. the

The pressure wheel is composed of two hanging rubber wheels. the

Compared with the prior art, the utility model has the beneficial effects that: the utility model adds a set of support rollers and pressure rollers between the two sets of support rollers and pressure rollers, so that it will not jump when the cement lining is rotating at high speed. Small quantity, stable operation, and good lining quality not only make the lining quality of medium-sized ductile iron pipes better, but also line ductile iron pipes of DN300 and DN350 specifications, expanding the range of lining types. the

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described. the

Fig. 1 is the structural representation of the utility model. the

In the figure: 1 is the frame, 2 is the stepping conveyor, 3 is the driving roller group, 4 is the driven roller group, 5 is the intermediate roller group, 6 is the pressure roller, 7 is the retaining wheel, 8 is the pulley , 9 is a hydraulic cylinder, and 10 is a ductile iron pipe. the

Detailed ways

As shown in Figure 1, the utility model is a medium-sized centrifugal ductile iron pipe cement lining machine, including a frame 1, a stepping conveyor 2, a driving supporting wheel group 3, a driven supporting wheel group 4, and an intermediate supporting wheel group 5 , pressure roller 6 and retaining roller 7, a stepping conveyor 2 is installed under the frame 1, a driving supporting roller group 3 and a driven supporting roller group 4 are installed on the frame 1, and one end of the shaft body of the driving supporting roller group 3 A belt pulley 8 is fixed, and the belt pulley 8 is connected to the motor shaft of the variable frequency motor through a belt. On the end of the side of the frame 1 close to the driven supporting wheel group 4, a retaining wheel 7 is installed, and the driving supporting wheel group 3 and the driven supporting wheel group 4 is installed with a middle supporting roller group 5, the driving supporting roller group 3, the middle supporting roller group 5 and the driven supporting roller group 4 are all composed of two supporting rollers symmetrically installed on the frame 1, and the driving supporting rollers A pressure roller 6 is respectively installed above the group 3 , the intermediate support roller group 5 and the driven support roller group 4 , and each pressure roller 6 is controlled to lift by a hydraulic cylinder 9 . the

The supporting rollers of the driving supporting roller group 3 and the driven supporting roller group 4 are composed of three hanging rubber wheels, and the supporting rollers of the intermediate supporting roller group 5 are composed of two hanging rubber wheels. the

Described pinch wheel 6 is made of two hanging rubber wheels. the

The step conveyor 2 in the utility model is made up of lifting beam, translational beam and driving device, and driving device is made up of lifting oil cylinder and flat moving oil cylinder, and this is prior art. the

The utility model adds an intermediate supporting wheel group between the driving supporting wheel group and the driven supporting wheel group, so that the nodular cast iron pipe 10 rotates more smoothly during cement lining, the jumping amount is small, and the centrifugal dehydration effect is better; and It can also carry out cement lining on centrifugal ductile iron pipes with two small specifications of DN300 and DN350, which improves the performance of equipment, improves product quality and expands the processing range. the

work process

The stepping conveyor 2 of the utility model lifts, translates, and descends the ductile iron pipe 10 and then sends it to the three support wheel groups 3, 4, and 5 below the frame 1, and starts three hydraulic cylinders 9 to control three A pressure wheel 6 descends to hold down the ductile iron pipe 10, starts the frequency conversion motor and drives the active supporting roller group 3 to rotate, and drives the ductile iron pipe 10 to rotate through the active supporting roller group 3 and performs centrifugal lining with cement mortar. The retaining wheel 7 withstands the socket end of the ductile iron pipe 10 to prevent axial movement when it rotates at high speed. The frequency conversion motor drives the ductile iron pipe 10 to stop automatically after the set rotation time is completed, and three hydraulic cylinders 9 are started to make the three The pressure roller 6 rises to the upper limit position, and the stepping conveyor 2 is started to lift, translate and descend the ductile iron pipe 10, and then send the lined ductile iron pipe 10 out of the frame 1, while another ductile iron pipe is sent into Go to the positions of the three support wheel groups 3, 4, and 5, and repeat the above operation steps even if the lining operation is performed on the next ductile iron pipe.

Claims (3)

1. one kind medium-sized centrifugal ductile cast iron pipes cement lining coating machine, comprise frame (1), stepping conveyor (2), active roller station group (3), driven support roller group (4), middle support roller group (5), pinch roller (6) and gear wheel (7), the below of frame (1) is equipped with stepping conveyor (2), active roller station group (3) and driven support roller group (4) are installed on the frame (1), axis body one end of active roller station group (3) is fixed with belt pulley (8), belt pulley (8) is connected with the motor shaft of variable-frequency motor by belt, the upper side end near driven support roller group (4) of frame (1) is equipped with gear wheel (7), it is characterized in that: support roller group (5) in the middle of being equipped with between active roller station group (3) and the driven support roller group (4), described active roller station group (3), middle support roller group (5) and driven support roller group (4) consist of by two support rollers that symmetry is installed on the frame (1), active roller station group (3), middle support roller group (5) and driven support roller group (4) top are separately installed with a pinch roller (6), and each pinch roller (6) is all by a hydraulic cylinder (9) control lifting.

2. a kind of medium-sized centrifugal ductile cast iron pipes cement lining coating machine according to claim 1, it is characterized in that: the support roller of described active roller station group (3) and driven support roller group (4) is three kiss-coating wheels and consists of, and the support roller of described middle support roller group (5) is that two kiss-coatings wheels consist of.

3. a kind of medium-sized centrifugal ductile cast iron pipes cement lining coating machine according to claim 1 and 2 is characterized in that: described pinch roller (6) is that two kiss-coatings wheels consist of.

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