Discharging mechanism of centripetal pump of disc separator

Abstract

A discharging mechanism of a centripetal pump of a disc type separator comprises a feeding pipe, the centripetal pump is arranged in the circumferential direction of the feeding pipe, a pump chamber cover is installed outside the centripetal pump in a sleeved mode, and the pump chamber cavity is formed by the centripetal pump and the pump chamber cover. The pump chamber cavity, the centripetal pump and the joint seat are connected to form a discharging flow channel; and a first sealing ring and a second sealing ring are respectively arranged above and below the annular groove of the centripetal pump. By means of the centripetal pump discharging mechanism of the disc type separator, the liquid phase in the mixed flow area can effectively and completely flow back to the feeding pipe to participate in material separation again during two-phase separation, the slag phase removal rate is improved, and meanwhile liquid phase loss caused by slag discharging is effectively reduced; the mechanism can also be used for separating and discharging the part of liquid phase with very low content during three-phase separation.

Description

Technical Field

[0001] The present invention belongs to the technical field of separation equipment, and particularly relates to a centripetal pump discharging mechanism of a disc separator. Background Art

[0002] During the separation process of a disc separator, according to the characteristics of the material, it is generally liquid-solid two-phase separation and liquid-liquid-solid three-phase separation. During two-phase separation, the slag phase is discharged from the slag discharge port of the drum, and the liquid phase is discharged outside the machine from the light liquid outlet. During three-phase separation, the slag phase is also discharged from the slag discharge port of the drum, and the light and heavy liquid phases are discharged outside the machine from the light and heavy phase outlets respectively. When the drum discharges slag, a certain amount of material will inevitably be lost. When using two-phase separation to remove slag and separate the slag for materials with a relatively low slag content, the loss of materials is greater. Therefore, it is not very suitable to directly use two-phase separation for materials with high economic value and high recovery requirements. During three-phase separation, both the light and heavy liquid phases occupy a certain proportion more or less. If the content of a certain liquid phase is very low, the traditional three-phase separation discharging structure is not applicable either. Therefore, for these two types of materials, it is necessary to develop a discharging structure different from the traditional three-phase separation to meet the usage requirements of these materials. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a centripetal pump discharging mechanism of a disc separator, which is used to improve the slag phase removal efficiency by pumping back during two-phase separation while reducing the loss of the liquid phase; or for the separation of a certain liquid phase with a very low content during three-phase separation.

[0004] The present invention provides a centripetal pump discharging mechanism of a disc separator, including a feed pipe (6). A centripetal pump (1) is arranged in the circumferential direction of the feed pipe (6). A pump chamber cover (3) is sleeved and installed outside the centripetal pump, and a pump chamber cavity (2) is formed by the centripetal pump (1) and the pump chamber cover (3); a discharging flow channel is formed by connecting between the pump chamber cavity (2), the centripetal pump (1) and a joint seat (7); a first sealing ring (5) and a second sealing ring (4) are respectively installed above and below the annular groove of the centripetal pump (1).

[0005] As a further technical solution of the present invention, the centripetal pump (1) is directly and cooperatively connected with the joint seat (7).

[0006] Further, the feeding and discharging joint surface between the centripetal pump (1) and the joint seat (7) is a conical surface fit.

[0007] Further, the centripetal pump (1) is provided with a plurality of circular feeding holes and the same number of discharging holes connected correspondingly.

[0008] Further, a discharging hole is formed on the joint seat (7).

[0009] Furthermore, at the tapered mating surface between the centripetal pump (1) and the joint seat (7), an annular groove connected to the discharge port of the centripetal pump (1) and the discharge port of the joint seat (7) is respectively provided, and the two annular grooves are connected to form a passage.

[0010] The advantages of the present invention are that through the centripetal pump discharge mechanism of the disc separator, the liquid phase in the mixed flow area during two-phase separation can be effectively returned to the feed pipe to participate in the material separation again, improving the slag phase removal rate and effectively reducing the liquid phase loss caused by slag discharge; this mechanism can also be used for the separation and discharge of this part of the liquid phase with a very small content during three-phase separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of the present invention.

[0012] In the figure: 1. Centripetal pump, 2. Pump chamber, 3. Pump chamber cover, 4. Second sealing ring, 5. First sealing ring, 6. Feed pipe, 7. Joint seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] Please refer to Figure 1 , this embodiment provides a centripetal pump discharge mechanism for a disc separator. It includes a centripetal pump 1, a pump chamber 2, a pump chamber cover 3, a second sealing ring 4, a first sealing ring 5, a feed pipe 6, and a joint seat 7. The pump chamber cover 3, the pump chamber 2, the centripetal pump 1, and the joint seat 7 together form the discharge channel of the centripetal pump discharge mechanism of the disc separator. This part of the separated liquid phase is pumped from the pump chamber 2 into the centripetal pump 1, and then pumped into the joint seat 7 by the centripetal pump 1 and flows out.

[0014] The centripetal pump 1 is directly connected to the joint seat 7 in a tapered mating manner. A certain number of circular feed holes and the same number of discharge holes connected thereto are provided on the centripetal pump 1, and a discharge hole is provided on the joint seat 7. Annular grooves are provided on the tapered mating surfaces of the centripetal pump 1 and the joint seat 7, and the two annular grooves are connected and joined. The feed hole on the joint seat 7 is connected through the annular groove provided on the joint seat 7 and the annular groove provided on the centripetal pump 1, and then connected to the discharge hole of the centripetal pump 1 to form a discharge passage.

[0015] A first sealing ring 5 and a second sealing ring 4 are respectively installed at the upper and lower positions of the tapered annular groove of the centripetal pump 1 to achieve a sealing effect. These two sealing rings can also be installed at the upper and lower positions of the tapered annular groove of the joint seat 7 according to the structural requirements, and the same sealing effect can be achieved.

[0016] The discharge flow rate of the centripetal pump discharge mechanism can be adjusted by designing the number and size of the inlet and outlet holes of the centripetal pump 1 and the size of the discharge hole of the joint seat.

[0017] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above specific embodiments, and the above specific embodiments and the descriptions in the specification are only for further illustrating the principles of the present invention. Without departing from the spirit scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the claims and their equivalents.

Claims

1. A centripetal pump discharging mechanism for a disc separator, characterized in that: The invention comprises a feed pipe (6), a centripetal pump (1) is arranged on the circumference of the feed pipe (6), a pump chamber cover (3) is installed on the outer casing of the centripetal pump, and a pump chamber cavity (2) is formed by the centripetal pump (1) and the pump chamber cover (3); the pump chamber cavity (2) and the centripetal pump (1) are connected with a joint seat (7) to form a discharge flow channel; a first sealing ring (5) and a second sealing ring (4) are installed on the upper and lower parts of the annular groove of the centripetal pump (1), respectively.

2. A centripetal pump discharging mechanism for a disc-type separator according to claim 1, characterized in that: The centripetal pump (1) is directly connected to the joint seat (7).

3. The centripetal pump discharging mechanism of a disc separator according to claim 1, characterized in that: The inlet and outlet fitting surfaces of the centripetal pump (1) and the joint seat (7) are conical fitting surfaces.

4. The centripetal pump discharging mechanism of a disc separator according to claim 1, characterized in that: The centripetal pump (1) is provided with a plurality of feed holes and an equal number of discharge holes correspondingly connected thereto.

5. The centripetal pump discharging mechanism of a disc separator according to claim 1, characterized in that: The joint seat (7) is provided with a discharge hole.

6. The centripetal pump discharging mechanism of a disc separator according to claim 1, characterized in that: The conical fitting surfaces of the centripetal pump (1) and the joint seat (7) are respectively provided with an annular groove connected to the discharge port of the centripetal pump (1) and the discharge port of the joint seat (7), and the two annular grooves are connected to form a passage.

Images