Liquid blocking plate water blocking structure applied to horizontal spiral pushing centrifugal machine

Abstract

The utility model relates to a liquid blocking plate water blocking structure applied to a horizontal spiral pushing centrifugal machine, which is characterized in that a flow guide ring with a conical hole is connected to a liquid blocking plate, a closed ring in clearance fit with the flow guide ring is connected to a rotary drum, and the size of the clearance is set to be 0.5-2mm; and liquid accidentally leaking into the gap generates centrifugal force under the action of the closed ring rotating at a high speed and flows into the liquid collecting cavity along the inclined surface of the conical hole, so that the liquid is effectively prevented from leaking into the residue collecting cavity through the gap between the rotary drum and the liquid blocking plate in the working process of the centrifugal machine. The technical problem that when a traditional horizontal type spiral material pushing centrifugal machine works, part of separation liquid leaks into a solid-phase material collecting area from a gap between a rotary drum and a liquid blocking plate, and consequently the solid-liquid separation effect is reduced is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to centrifuge technical field, concretely relates to the liquid baffle water resisting structure for horizontal screw pushing material centrifuge. BACKGROUND

[0002] The horizontal screw pushing material centrifuge is mainly composed of a rotary drum, a screw pushing material device, a driving motor for driving the rotary drum and the screw pushing material device to rotate at different speeds, a machine shell covering the rotary drum, and a liquid baffle arranged in the machine shell. The liquid baffle is arranged at the outlet end of the rotary drum to separate the liquid separated by the rotary drum from the solid material pushed out by the screw pushing material device. The specific structure of the horizontal screw pushing material centrifuge can be found in the utility model patent with the patent number 201620975932.2 and the name "Horizontal Screw Sedimentation and Filtration Centrifuge".

[0003] However, since the rotary drum is in motion and the liquid baffle is stationary, there is a sealing difficulty between the two, resulting in a gap between the liquid baffle and the rotary drum. A small part of the liquid separated by the rotary drum will mix into the solid material through the gap, reducing the solid-liquid separation effect. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that part of the separated liquid will leak into the solid material collection area from the gap between the rotary drum and the liquid baffle during the operation of the traditional horizontal screw pushing material centrifuge, reducing the solid-liquid separation effect.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of a liquid baffle water resisting structure for a horizontal screw pushing material centrifuge, which includes a rotary drum, a machine shell, and a liquid baffle. The rotary drum is arranged in the machine shell, and the axial direction of the rotary drum is horizontally arranged. The liquid baffle is annular and is vertically fixedly connected to the inner wall of the machine shell, dividing the internal space of the machine shell into a liquid collection cavity and a slag collection cavity arranged side by side. The rotary drum is arranged in the liquid collection cavity, and the mouth of the rotary drum is close to the liquid baffle. A large number of filter holes are arranged on the circumferential wall of the rotary drum. A flow guide ring is detachably connected to the inner edge of the liquid baffle. The inner hole of the flow guide ring is a conical hole, and the conical surface of the conical hole faces the liquid collection cavity. A closing ring is fixedly connected to one end of the rotary drum close to the liquid baffle. The outer wall of the closing ring is a conical surface that matches the gap of the conical hole. A gap of 0.5mm-2mm is left between the flow guide ring and the closing ring.

[0006] As a preferred scheme, the inner wall of the small-diameter end of the flow guide ring extends radially inward to form a water-blocking ring with a wedge-shaped cross section, the side of the water-blocking ring facing the liquid collecting cavity is an annular plane perpendicular to the axial direction of the flow guide ring, the side of the water-blocking ring facing away from the liquid collecting cavity is inclined toward the central axis of the flow guide ring, the side of the water-blocking ring facing the liquid collecting cavity is provided with an annular embedding groove, the outer edge of the annular embedding groove is connected with the conical surface of the conical hole, the sealing ring is provided with an annular boss corresponding to the annular embedding groove, the annular boss is inserted into the annular embedding groove and is in clearance fit with the annular embedding groove, and the clearance between the annular embedding groove and the annular boss is 0.5mm-2mm.

[0007] As a preferred scheme, the angle between the inclined surface of the conical hole and the central axis of the conical hole is 45°.

[0008] As a preferred scheme, the end face of the sealing ring facing the slag collecting cavity is further provided with a lead-in convex ring inserted into the central hole of the water-blocking ring, the outer diameter of the lead-in convex ring is smaller than the inner diameter of the water-blocking ring, the outer diameter of the end of the lead-in convex ring away from the sealing ring is larger than that of the other end, the outer wall of the lead-in convex ring is a conical surface, an acute-angle reentrant corner is formed at the connection between the lead-in convex ring and the sealing ring, and the inner edge of the water-blocking ring is opposite to the reentrant corner.

[0009] The utility model discloses the beneficial effect is: the utility model discloses through connecting the flow guide ring with conical hole on the liquid baffle, connecting the sealing ring with the clearance fit of flow guide ring on the rotary drum, and the clearance size is set between 0.5mm-2mm, make the liquid that accidentally leaks into the clearance under the action of the centrifugal force of high -speed rotation sealing ring, and flow along the inclined surface of conical hole to the liquid collecting cavity, thereby effectively avoid the centrifuge in the working process, and the liquid that leaks into the slag collecting cavity between the rotary drum and the liquid baffle. Solve the technical problem that the partial separation liquid will leak into the solid phase material collection area between the rotary drum and the liquid baffle when the traditional horizontal screw pushing material centrifuge works, and lead to solid -liquid separation effect reduces. ACCURATE DRAWINGS

[0010] The specific implementation of the utility model will be further explained in combination with the drawings, wherein:

[0011] Figure 1 It is the structure schematic diagram of the utility model;

[0012] Figure 2 It is Figure 1 The enlarged view of A part in it;

[0013] Figure 1 And Figure 2 In it: 1, rotary drum; 2, machine shell; 3, liquid baffle; 4, liquid collecting cavity; 5, slag collecting cavity; 6, filter hole; 7, flow guide ring; 8, sealing ring; 9, conical hole; 10, water-blocking ring; 11, annular embedding groove; 12, annular boss; 13, lead-in convex ring; 14, reentrant corner. DETAILED DESCRIPTION

[0014] The specific implementation of the present application will be described in detail below with reference to the accompanying drawings.

[0015] As shown in Figure 1 and Figure 2 The liquid baffle water blocking structure applied to the horizontal screw pushing centrifuge comprises a drum 1, a casing 2 and a liquid baffle 3, the drum 1 is arranged in the casing 2, the axial direction of the drum 1 is horizontally arranged, the liquid baffle 3 is annular, the liquid baffle 3 is vertically fixedly connected to the inner wall of the casing 2, the inner space of the casing 2 is divided into a liquid collecting cavity 4 and a slag collecting cavity 5 arranged in left and right directions, the drum 1 is arranged in the liquid collecting cavity 4 and the mouth of the drum 1 is close to the liquid baffle 3, the bottom of the drum 1 is connected to the rotating shaft of the centrifuge, a screw pushing device is further connected to the inside of the drum 1, the screw pushing device and the drum are driven to rotate at different speeds by a driving motor, the drum 1 separates the solid-liquid mixed material in the inside of the drum 1, and the screw pushing device pushes the solid phase material to the mouth of the drum 1 and into the slag collecting cavity 5. A large number of filter holes 6 are arranged on the circumferential wall of the drum 1, a flow guide ring 7 is detachably connected to the inner edge of the liquid baffle 3, the inner hole of the flow guide ring 7 is a conical hole 9, the conical surface of the conical hole 9 faces the liquid collecting cavity 4, one closed ring 8 is fixedly connected to one end of the drum 1 close to the liquid baffle 3, the outer wall of the closed ring 8 is a conical surface which is gap matched with the conical surface of the conical hole 9, and a gap of 0.5mm-2mm is left between the flow guide ring 7 and the closed ring 8.

[0016] The present embodiment preferably extends radially inward on the inner wall of the small-diameter end of the flow guide ring 7 to form a water blocking ring 10 with a wedge-shaped cross section, the side of the water blocking ring 10 facing the liquid collecting cavity 4 is an annular plane perpendicular to the axial direction of the flow guide ring 7, the side of the water blocking ring 10 opposite to the liquid collecting cavity 4 is inclined towards the central axis of the flow guide ring 7, the side of the water blocking ring 10 facing the liquid collecting cavity 4 is provided with an annular embedding groove 11, the outer edge of the annular embedding groove 11 is connected to the conical surface of the conical hole 9, the closed ring 8 is provided with an annular protrusion 12 corresponding to the annular embedding groove 11, the annular protrusion 12 is inserted into the annular embedding groove 11 and gap matched with the annular embedding groove 11, and the gap between the annular embedding groove 11 and the annular protrusion 12 is 0.5mm-2mm.

[0017] The gap matched annular embedding groove 11 and the annular protrusion 12 are arranged to guide the liquid between the flow guide ring 7 and the closed ring 8 to flow back into the liquid collecting cavity 4 when the drum 1 is stopped. As shown in Figure 1 The liquid between the flow guide ring 7 and the closed ring 8 above the drum 1 will flow into the annular embedding groove 11 along the gap. At this time, the liquid in the annular embedding groove 11 will flow downward along the annular side wall thereof, and finally gather between the flow guide ring 7 and the closed ring 8 below the drum 1, and then flow back into the liquid collecting cavity 4. Thus, the liquid remaining between the flow guide ring 7 and the closed ring 8 after the drum 1 is stopped is reduced from leaking into the slag collecting cavity 5.

[0018] The angle between the inclined surface of the conical hole 9 and the central axis of the conical hole 9 is 45° in the embodiment, and in practical application, the angle between the inclined surface of the conical hole 9 and the central axis of the conical hole 9 can be selected between 30° and 60°.

[0019] The embodiment further provides a connecting convex ring 13 inserted into the center hole of the water blocking ring 10 on the end face of the closed ring 8 facing the slag collecting cavity 5, the outer diameter of the connecting convex ring 13 is smaller than the inner diameter of the water blocking ring 10, the outer diameter of the end of the connecting convex ring 13 away from the closed ring 8 is larger than the other end, the outer wall of the connecting convex ring 13 is a conical surface, an acute female corner 14 is formed at the connection between the connecting convex ring 13 and the closed ring 8, and the inner edge of the water blocking ring 10 is opposite to the female corner 14.

[0020] The connecting convex ring 13 is arranged to avoid that the liquid overflowing from the annular embedding groove 11 above the rotating drum 1 directly leaks into the slag collecting cavity 5. The female corner on the connecting convex ring 13 effectively avoids that the liquid dropping on the connecting convex ring 13 flows to the side of the slag collecting cavity 5, and completely avoids the problem that the liquid leaks into the slag collecting cavity 5 to pollute the solid phase material and reduce the solid-liquid separation effect.

[0021] The working process of the utility model is as follows: Figure 1 and Figure 2 As shown in the figure, the centrifuge rotates at high speed when working, and centrifugal separation is performed on the solid-liquid mixed material in the rotating drum 1. After separation, the liquid is thrown into the liquid collecting cavity 4. Since the liquid is thrown into the liquid collecting cavity 4 from all directions, part of the liquid is thrown onto the liquid blocking plate 3 above the rotating drum 1, and then flows downward along the liquid blocking plate 3 into the conical hole 9 of the flow guide ring 7. Since the gap between the flow guide ring 7 and the closed ring 8 is very small, the liquid flowing into the conical hole 9 of the flow guide ring 7 will contact the closed ring 8. The closed ring 8 rotates at high speed with the rotating drum 1, and thus drives the liquid to flow circumferentially. The centrifugal force generated by the flowing liquid will flow along the conical hole 9 to the large-diameter end, and finally return to the liquid collecting cavity 4.

[0022] When the rotating drum 1 stops rotating, the liquid on the inner wall of the conical hole 9 loses power and flows downward along the inner wall of the conical hole 9 under the action of gravity. The liquid located below the central axis of the rotating drum 1 directly flows back into the liquid collecting cavity 4, and the liquid on the inner wall of the conical hole 9 located above the central axis of the rotating drum 1 may flow into the annular embedding groove 11. Part of the liquid in the annular embedding groove 11 flows downward along the annular embedding groove 11 and finally flows back into the conical hole 9, and then flows back into the liquid collecting cavity 4. Part of the liquid overflows the annular embedding groove 11, drops onto the connecting convex ring 13, and flows downward to the annular embedding groove 11 located below the rotating drum 1 under the guidance of the female corner 14, and then flows back into the liquid collecting cavity 4 through the conical hole 9.

[0023] It can be seen that the liquid blocking plate water blocking structure applied to the horizontal screw pushing material centrifuge can effectively avoid that the liquid in the liquid collecting cavity 4 enters the slag collecting cavity through the gap between the liquid blocking plate 3 and the rotary drum 1 to contaminate the solid phase material, and overcomes the technical problem that the solid-liquid separation effect is reduced.

[0024] The above examples only exemplarily illustrate the principles and effects of the present application and some applied examples, and are not used to limit the present application; it should be noted that, for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A liquid blocking plate water blocking structure applied to a horizontal screw pushing centrifuge, comprising a rotary drum (1), a machine shell (2) and a liquid blocking plate (3), the rotary drum (1) is arranged in the machine shell (2), the rotary drum (1) is arranged horizontally in the axial direction, the liquid blocking plate (3) is annular, the liquid blocking plate (3) is fixedly connected to the inner wall of the machine shell (2) vertically, and the machine shell (2) is divided into a left liquid collecting cavity (4) and a right slag collecting cavity (5) arranged in parallel by the liquid blocking plate (3), the rotary drum (1) is arranged in the liquid collecting cavity (4), and the rotary drum (1) is close to the liquid blocking plate (3) at the mouth portion, a large number of filter holes (6) are arranged on the circumferential wall of the rotary drum (1), and the liquid blocking plate (3) is provided with a plurality of water blocking holes (7) arranged in the axial direction, the water blocking holes (7) are arranged in the liquid blocking plate (3) in the axial direction, and the water blocking holes (7) are arranged in the liquid blocking plate (3) in the axial direction. The inner edge of the liquid blocking plate (3) is detachably connected with a flow guide ring (7), the inner hole of the flow guide ring (7) is a conical hole (9), the conical surface of the conical hole (9) faces the liquid collecting cavity (4), one end of the rotary drum (1) close to the liquid blocking plate (3) is fixedly connected with a closed ring (8), the outer wall of the closed ring (8) is a conical surface which is in clearance fit with the conical hole (9), and a gap of 0.5mm-2mm is left between the flow guide ring (7) and the closed ring (8).

2. The liquid blocking structure for the liquid blocking plate of a horizontal pusher centrifuge according to claim 1, wherein The small-diameter end of the flow guide ring (7) is radially extended inward to form a water blocking ring (10) with a wedge-shaped cross section, the surface of the water blocking ring (10) facing the liquid collecting cavity (4) is a ring-shaped plane perpendicular to the axial direction of the flow guide ring (7), the surface of the water blocking ring (10) facing away from the liquid collecting cavity (4) is inclined towards the central axis of the flow guide ring (7), the surface of the water blocking ring (10) facing the liquid collecting cavity (4) is provided with an annular embedding groove (11), the outer edge of the annular embedding groove (11) is connected with the conical surface of the conical hole (9), the closed ring (8) is provided with an annular boss (12) corresponding to the annular embedding groove (11), the annular boss (12) is inserted into the annular embedding groove (11) and is in clearance fit with the annular embedding groove (11), and the clearance between the annular embedding groove (11) and the annular boss (12) is 0.5mm-2mm.

3. The liquid blocking structure for the liquid blocking plate of a horizontal pusher centrifuge according to claim 1, wherein The angle between the inclined surface of the conical hole (9) and the central axis of the conical hole (9) is 45°.

4. The liquid barrier structure for the liquid barrier plate of a horizontal pusher centrifuge according to claim 2, wherein The end surface of the closed ring (8) facing the slag collecting cavity (5) is further provided with a lead-in boss ring (13) inserted into the central hole of the water blocking ring (10), the outer diameter of the lead-in boss ring (13) is smaller than the inner diameter of the water blocking ring (10), the outer diameter of the end of the lead-in boss ring (13) away from the closed ring (8) is larger than that of the other end, so that the outer wall of the lead-in boss ring (13) is a conical surface, an acute female corner (14) is formed at the connection between the lead-in boss ring (13) and the closed ring (8), and the inner edge of the water blocking ring (10) is opposite to the female corner (14).

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