Middle liquid flowing and feeding pipe structure of double-push and double-discharge type material pushing centrifugal machine

Abstract

The invention discloses a middle liquid flowing feeding pipe structure of a double-push and double-discharge type material pushing centrifugal machine, relates to the technical field of material pushing centrifugal machines, and has the advantages that a feeding pipe can also convey washing liquid, and the interior of a screen barrel is convenient to clean. According to the technical scheme, the washing device is characterized by comprising a main pipeline used for flowing of suspension slurry and a secondary pipeline located in the main pipeline and used for flowing of washing liquid, one end of the secondary pipeline extends out of the main pipeline through a bent pipe, the other end of the secondary pipeline is closed and penetrates out of the main pipeline and a material pushing disc, and a plurality of washing holes are formed in the outer wall penetrating out of the material pushing disc.

Description

Technical Field

[0001] The invention relates to the technical field of pusher centrifuges, in particular to a middle liquid feeding pipe structure of a double-push and double-outlet pusher centrifuge. Background Art

[0002] A centrifuge is a machine that uses centrifugal force to separate liquid from solid particles or components in a mixture of liquid and liquid. Pusher centrifuge, as a continuously operating filtering centrifuge, is widely used in the field of solid-liquid separation.

[0003] A Chinese patent with application number CN202121781704.9 discloses a piston bidirectional pushing centrifuge, including a piston rotating rod body that performs horizontal linear motion and rotational motion, an inner sleeve is arranged between the piston rotating rod body and the bearing seat body, the bearing seat body is arranged in an outer shell, a drum member is arranged on the side of the bearing seat body, a screen member is arranged inside the drum member, a pusher member is arranged inside the screen member, a through hole is arranged near the screen member, the outer wall of the pusher member contacts the inner surface of the screen member, and the pusher member performs repeated linear motion along the axial direction inside the screen member, the pusher member is connected to the side of the piston rotating rod body through a connecting member, a distribution hopper is arranged on the side of the pusher member away from the piston rotating rod body, and a feed pipe is arranged on the side of the distribution hopper.

[0004] The above-mentioned feed pipe only delivers suspension slurry and cannot deliver washing liquid to clean the screen cylinder.

[0005] Therefore, the applicant has developed a new technical solution in the actual production process to solve the above technical problems. Summary of the invention

[0006] In view of the above technical deficiencies, the purpose of the present invention is to provide an intermediate liquid feed pipe structure for a double-push double-outlet pusher centrifuge, which has the advantage that the feed pipe can also transport washing liquid, thereby facilitating cleaning of the inside of the screen cylinder.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides an intermediate liquid feeding pipe structure of a double-push double-outlet pusher centrifuge, comprising a main pipe for conveying suspension slurry and a secondary pipe located in the main pipe and for conveying washing liquid, wherein one end of the secondary pipe extends out of the main pipe through a bend pipe, and the other end is closed and passes through the main pipe and a pusher plate, and a plurality of washing holes are opened on the outer wall passing through the pusher plate.

[0008] By adopting the above technical scheme, the main pipeline transports the suspension slurry into the centrifuge, the secondary pipeline transports the washing liquid into the centrifuge, and the screen cylinder inside the push plate is cleaned through the washing hole. The elbow and one side of the main pipeline are both located on the outer wall of the centrifuge, which is convenient for introducing the washing liquid and the suspension slurry in turn. At this time, the feed pipe can also transport the washing liquid, which is convenient for cleaning the inside of the screen cylinder.

[0009] Preferably, the secondary pipeline is provided with an inverted cone disk on the outer wall passing through the main pipeline, the end of the inverted cone disk with a larger taper is distributed toward the pushing plate, and the secondary pipeline is coaxially distributed with the main pipeline.

[0010] Preferably, the secondary pipeline is provided with an adjusting member that enables the washing liquid sprayed from some washing holes on the secondary pipeline to be sprayed alternately onto the pushing plate and the pushing chassis.

[0011] Preferably, the adjusting member comprises a movable tube which is slidably connected to the outer wall of the secondary pipe and has a semi-arc longitudinal cross-section, and the movable tube is provided with a plurality of pairs of figure-eight flow guide holes, wherein an outlet of one flow guide hole in each pair of flow guide holes faces toward the pushing chassis, and an outlet of the other flow guide hole faces toward the pushing plate, and each pair of flow guide holes is alternately connected with one of the washing holes, and the secondary pipe is provided with a pushing member which pushes the movable tube to move horizontally back and forth.

[0012] Preferably, the pushing member includes a vertical column arranged on the outer wall of the secondary pipe passing through the pushing plate and distributed perpendicular to the length direction of the secondary pipe, the moving tube is provided with a sliding groove for the vertical column to slide into, and the sliding groove is distributed along the length direction of the secondary pipe, a connecting rod is provided on the outer wall of the moving tube, and a cross bar located between the pushing plate and the pushing chassis is provided at one end of the connecting rod away from the moving tube, and balls sliding on the pushing plate and the pushing chassis are respectively provided at both ends of the cross bar, and an annular driving groove for the balls to slide is provided on the pushing plate and the pushing chassis.

[0013] Preferably, when the pushing chassis drives the pushing plate and the cross bar to move toward the bottom of the screen cylinder, the outlets of each pair of guide holes are connected to the guide holes and washing holes distributed toward the pushing plate; when the pushing chassis drives the pushing plate and the cross bar to move away from the bottom of the screen cylinder, the outlets of each pair of guide holes are connected to the guide holes and washing holes distributed on the surface of the pushing chassis.

[0014] Preferably, one end of the main pipeline is connected to the suspension slurry pipe through a feed flange, and a washing flange is provided on the elbow pipe after it passes through the main pipeline away from the secondary pipeline, and the elbow pipe is connected to the washing liquid pipe through the washing flange.

[0015] Preferably, the installation method of the elbow, the secondary pipeline and the main pipeline is as follows: Step 1: Weld one end of the elbow to one side of the secondary pipe; Step 2: A connecting hole is opened on the main pipeline and connected with the elbow away from the secondary pipeline. Then the secondary pipeline and the elbow are inserted into the main pipeline together so that one end of the elbow is connected with the connecting hole. At this time, the elbow is welded to the wall of the connecting hole outside the main pipeline. Step 3: Weld a straight tube to the outer wall of the main pipeline so that the straight tube is connected to the bent pipe. At this time, the washing flange is welded to the straight tube.

[0016] Preferably, two or more reinforcing ribs of equal height are evenly arranged on the outer wall of the secondary pipe in the circumferential direction. When the secondary pipe enters the main pipe, one end of each reinforcing rib away from the secondary pipe contacts the inner wall of the main pipe.

[0017] Preferably, after placing the secondary pipe into the main pipe in the above second step, the secondary pipe is made coaxial with the main pipe through equal-height reinforcing ribs, and a stopper located on one side of the equal-height reinforcing ribs is provided on the inner wall of the main pipe. When one side of the equal-height reinforcing ribs collides with the stopper, one end of the bent pipe is connected to the connecting hole.

[0018] The beneficial effects of the present invention are as follows: the main pipeline transports the suspension slurry into the centrifuge, the secondary pipeline transports the washing liquid into the centrifuge, the screen cylinder inside the push plate is cleaned through the washing hole, the elbow and one side of the main pipeline are both located on the outer wall of the centrifuge, which is convenient for introducing the washing liquid and the suspension slurry in turn, and at this time, the feed pipe can also transport the washing liquid, which is convenient for cleaning the inside of the screen cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of this embodiment; Figure 2 This is a schematic diagram of the structure of the feed pipe in the centrifuge according to the present embodiment; Figure 3 This is a schematic diagram of the structure of the mobile tube in this embodiment; Figure 4 for Figure 3 The enlarged structural diagram of the middle A part; Figure 5 This is a schematic diagram of the structure of the vertical column in this embodiment; Figure 6 This is a schematic diagram of the structure of the embodiment for reflecting the equal-height reinforcing ribs; Figure 7 for Figure 6Schematic diagram of the enlarged structure of part B in the middle.

[0021] Description of reference numerals: In the figure: 1. main pipeline; 11. secondary pipeline; 111. inverted cone disk; 112. moving pipe; 113. guide hole; 114. pushing chassis; 115. equal height reinforcing ribs; 116. pillar; 12. elbow; 13. pushing plate; 14. washing hole; 15. vertical column; 151. slideway; 16. connecting rod; 161. cross bar; 162. ball bearing; 163. driving groove; 17. feed flange; 18. washing flange; 19. connecting hole; 191. straight tube; 192. block; 2. screen cylinder; 3. rotating drum. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] A middle liquid feeding pipe structure of a double-push double-outlet push centrifuge, such as Figure 1 and Figure 2 , including a main pipeline 1 for carrying suspension slurry and a secondary pipeline 11 located in the main pipeline 1 and used for carrying washing liquid. One end of the main pipeline 1 passes through the outside of the centrifuge, and the other end extends into the screen cylinder 2. One end of the secondary pipeline 11 extends out of the main pipeline 1 through a bend 12, and the other end is closed and passes through the main pipeline 1 and a push plate 13, and a plurality of washing holes 14 are opened on the outer wall passing through the push plate 13. At this time, the bend 12 can be a 90° bend 12.

[0024] like Figure 1 and Figure 2 The main pipeline 1 transports the suspension slurry into the centrifuge, and the secondary pipeline 11 transports the washing liquid into the centrifuge, and the screen cylinder 2 inside the push plate 13 is cleaned through the washing hole 14. The elbow 12 and one side of the main pipeline 1 are both located on the outer wall of the centrifuge, which is convenient for respectively passing the washing liquid and the suspension slurry. At this time, the feed pipe can also transport the washing liquid, which is convenient for cleaning the inside of the screen cylinder 2. A plurality of spray holes can also be opened at the closed end of the secondary pipeline 11. Set according to needs.

[0025] like Figure 1 and Figure 2, the secondary pipe 11 is provided with an inverted cone 111 on the outer wall passing through the main pipe 1, and the end of the inverted cone 111 with a larger taper is distributed toward the push plate 13, and the secondary pipe 11 is coaxially distributed with the main pipe 1. At this time, the inverted cone 111 can make the suspension slurry coming out of the feed pipe hit the inverted cone 111, and then enter the distributor for acceleration and distribution. Reduce uneven distribution, which easily causes centrifuge vibration. At this time, the central axis of the inverted cone 111, the secondary pipe 11 and the main pipe 1 are all coaxially distributed.

[0026] like Figure 1 and Figure 2 In application, the parts around the main pipeline 1 are arranged as follows: the main pipeline 1 is installed in a feed pipe seat, the secondary pipeline 11 passes through a pusher plate 13, and the two sides of the pusher plate 13 are respectively equipped with a main distributor and an auxiliary distributor (for detailed structure, please refer to the patent content of the application number 2025102540479 for a double-push and double-outlet solid-liquid separation structure for a pusher centrifuge and its centrifuge applied by the applicant), the outer side of the pusher plate 13 is a drum 3, the drum 3 is equipped with a screen cylinder 2, the pusher chassis 114 performs rotary motion and reciprocating motion, and the pusher chassis 114 is located in the drum 3; there are 8 pillars 116 on the pusher chassis 114, and the pusher plate 13 is installed on the pillars 116. After the centrifuge is finished working, materials will be retained on both the pusher plate 13 and the pusher chassis 114.

[0027] like Figure 3 and Figure 4 and Figure 5 Therefore, in order to clean the materials on the pushing plate 13 and the pushing bottom plate 114 , an adjusting member is provided on the secondary pipe 11 so that the washing liquid sprayed from some washing holes 14 on the secondary pipe 11 is sprayed alternately on the pushing plate 13 and the pushing bottom plate 114 .

[0028] like Figure 3 and Figure 4 and Figure 5The adjusting member includes a moving tube 112 which is slidably connected to the outer wall of the secondary pipe 11 and has a semi-arc longitudinal section. The moving tube 112 is distributed along the curvature of the outer wall of the secondary pipe 11 and is distributed in the upper semicircle of the secondary pipe 11. A plurality of pairs of figure-eight flow guide holes 113 are opened on the moving tube 112. An outlet of one flow guide hole 113 in each pair of flow guide holes 113 faces the pushing chassis 114, and an outlet of the other flow guide hole 113 faces the pushing plate 13. Each pair of flow guide holes 113 is alternately connected to one of the washing holes 14. A pushing member for pushing the moving tube 112 to move horizontally back and forth is provided on the secondary pipe 11. At this time, the pushing member pushes the moving tube 112 to move reciprocally, so that the guide hole 113 guides the washing liquid in the washing hole 14 to the pushing plate 13 or the pushing chassis 114, and the density of the washing holes 14 outside the moving tube 112 is greater than the density of the washing holes 14 inside the moving tube 112, and the washing holes 14 outside the moving tube 112 are convenient for spraying the washing liquid into the screen cylinder 2 to wash the screen cylinder 2.

[0029] like Figure 3 and Figure 4 and Figure 5 The pushing member includes a vertical column 15 which is arranged on the outer wall of the secondary pipe 11 passing through the pushing plate 13 and is distributed perpendicular to the length direction of the secondary pipe 11. A sliding groove 151 is provided on the moving pipe 112 for the vertical column 15 to slide into. At this time, the vertical column 15 and the secondary pipe 11 are stationary, and the sliding groove 151 is distributed along the length direction of the secondary pipe 11. A connecting rod 16 is provided on the outer wall of the moving pipe 112. The connecting rod 16 and the vertical column 15 are staggered. A cross bar 161 located between the pushing plate 13 and the pushing chassis 114 is provided at one end of the connecting rod 16 away from the moving pipe 112. Balls 162 sliding on the pushing plate 13 and the pushing chassis 114 are respectively provided at both ends of the cross bar 161. Annular driving grooves 163 for the balls 162 to slide are provided on the pushing plate 13 and the pushing chassis 114. When the pushing chassis 114 and the pushing plate 13 move back and forth horizontally, the cross bar 161 is also driven to move back and forth horizontally. At this time, the cross bar 161 drives the moving tube 112 to move back and forth horizontally on the secondary pipe 11 through the connecting rod 16, so that the guide hole 113 on the moving tube 112 is connected with the washing hole 14, so as to change the direction of the washing liquid spray. At this time, the setting of the driving groove 163 facilitates the driving chassis and the pushing plate to rotate together, and the ball 162 slides in the driving groove 163, while the moving tube 112 does not rotate with the pushing chassis 114 and the pushing plate 13 under the limitation of the vertical column 15.

[0030] like Figure 3 and Figure 4 and Figure 5When the pushing chassis 114 drives the pushing plate 13 and the cross bar 161 to move toward the bottom of the screen cylinder 2, the outlets of each pair of guide holes 113 are connected to the guide holes 113 distributed on the pushing plate 13 and the washing holes 14, and the pushing plate 13 moves toward the moving tube 112; when the pushing chassis 114 drives the pushing plate 13 and the cross bar 161 to move away from the bottom of the screen cylinder 2, the outlets of each pair of guide holes 113 are connected to the guide holes 113 distributed on the surface of the pushing chassis 114 and the washing holes 14, and the pushing chassis 114 moves toward the moving tube 112, thereby facilitating the cleaning of the pushing chassis 114 by the washing liquid.

[0031] like Figure 3 and Figure 4 and Figure 5 One end of the main pipeline 1 is connected to the suspension slurry pipe through the feed flange 17, and the elbow 12 is provided with a washing flange 18 after passing through the main pipeline 1 away from the secondary pipeline 11. The elbow 12 is connected to the washing liquid pipe through the washing flange 18. At this time, the suspension slurry pipe and the washing liquid pipe are both provided with pumps to pump the suspension slurry and the washing liquid into the main pipeline 1 and the elbow 12 respectively.

[0032] like Figure 6 and Figure 7 , the installation method of the elbow 12, the secondary pipeline 11 and the main pipeline 1 is as follows: The first step: first weld one end of the elbow 12 to one side of the secondary pipe 11; Step 2: A connecting hole 19 is provided on the main pipeline 1, which is connected to the elbow 12 away from the secondary pipeline 11. Then, the secondary pipeline 11 and the elbow 12 are inserted into the main pipeline 1 together, so that one end of the elbow 12 is connected to the connecting hole 19. At this time, the elbow 12 is welded to the wall of the connecting hole 19 outside the main pipeline 1. The weld is as follows: Figure 7 As shown; Step 3: Weld the straight tube 191 to the outer wall of the main pipeline 1 so that the straight tube 191 is connected to the elbow 12. At this time, the washing flange 18 is welded to the straight tube 191. The weld is as shown in FIG. Figure 7 As shown, it is convenient to install the secondary pipeline 11 and the elbow 12 into the main pipeline 1 at this time.

[0033] like Figure 6 and Figure 7Two or more equal-height reinforcing ribs 115 are evenly arranged on the outer wall of the secondary pipe 11 in the circumferential direction. The equal-height reinforcing ribs 115 mean that the height of each reinforcing rib is the same. When the secondary pipe 11 enters the main pipe 1, the ends of each reinforcing rib away from the secondary pipe 11 are in contact with the inner wall of the main pipe 1. After the secondary pipe 11 is placed in the main pipe 1 in the above second step, the secondary pipe 11 is made coaxial with the main pipe 1 through the contour reinforcement ribs 115. A stopper 192 located on one side of the contour reinforcement ribs 115 is provided on the inner wall of the main pipe 1. When one side of the contour reinforcement ribs 115 conflicts with the stopper 192, one end of the elbow 12 is connected with the connecting hole 19. At this time, the contour reinforcement ribs 115 make the secondary pipe 11 coaxial with the main pipe 1, which is convenient for ensuring the coaxiality of the secondary pipe 11 and the main pipe 1 when welding the elbow 12 on the wall of the connecting hole 19. The contour reinforcement ribs 115 play a positioning role. The setting of the stopper 192 limits the length of the secondary pipe 11 extending into, which is convenient for aligning the elbow 12 with the connecting hole 19.

[0034] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A middle liquid feeding pipe structure of a double-push double-outlet pusher centrifuge, characterized in that: The invention comprises a main pipeline (1) for carrying a suspension slurry and a secondary pipeline (11) located in the main pipeline (1) and for carrying a washing liquid. One end of the secondary pipeline (11) extends out of the main pipeline (1) through a bend (12), and the other end is closed and passes through the main pipeline (1) and a push plate (13). A plurality of washing holes (14) are provided on the outer wall passing through the push plate (13).

2. The intermediate liquid feeding pipe structure of a double-push and double-outlet pusher centrifuge according to claim 1, characterized in that: The secondary pipeline (11) is provided with an inverted cone disk (111) on the outer wall of the secondary pipeline (11) passing through the main pipeline (1), and the end of the inverted cone disk (111) with a larger taper is distributed toward the pusher disk (13), and the secondary pipeline (11) is coaxially distributed with the main pipeline (1).

3. The intermediate liquid feeding pipe structure of a double-push and double-outlet pusher centrifuge according to claim 1, characterized in that: The secondary pipe (11) is provided with an adjusting member that enables the washing liquid sprayed from some washing holes (14) on the secondary pipe (11) to be sprayed alternately onto the pushing plate (13) and the pushing bottom plate (114).

4. The intermediate liquid feeding pipe structure of a double-push and double-outlet pusher centrifuge according to claim 3, characterized in that: The regulating member comprises a moving tube (112) which is slidably connected to the outer wall of the secondary pipe (11) and has a semi-arc longitudinal section. The moving tube (112) is provided with a plurality of pairs of figure-eight flow guide holes (113). The outlet of one flow guide hole (113) in each pair of flow guide holes (113) faces the material pushing bottom plate (114), and the outlet of the other flow guide hole (113) faces the material pushing plate (13). Each pair of flow guide holes (113) is alternately connected to one of the washing holes (14). The secondary pipe (11) is provided with a pushing member for pushing the moving tube (112) to move back and forth horizontally.

5. The intermediate liquid feeding pipe structure of a double-push and double-outlet pusher centrifuge according to claim 4, characterized in that: The pushing member comprises a vertical column (15) arranged on the outer wall of the secondary pipe (11) passing through the pushing plate (13) and distributed perpendicularly to the length direction of the secondary pipe (11); a slide groove (151) for the vertical column (15) to slide into is provided on the moving pipe (112); the slide groove (151) is distributed along the length direction of the secondary pipe (11); a connecting rod (16) is provided on the outer wall of the moving pipe (112); a cross bar (161) located between the pushing plate (13) and the pushing base plate (114) is provided at one end of the connecting rod (16) away from the moving pipe (112); balls (162) sliding on the pushing plate (13) and the pushing base plate (114) are provided at both ends of the cross bar (161); and an annular driving groove (163) for the balls (162) to slide is provided on both the pushing plate (13) and the pushing base plate (114).

6. The intermediate liquid feeding pipe structure of a double-push and double-outlet pusher centrifuge according to claim 5, characterized in that: When the pushing chassis (114) drives the pushing plate (13) and the cross bar (161) to move toward the bottom of the screen cylinder (2), the outlets of each pair of guide holes (113) distributed toward the pushing plate (13) are connected to the washing holes (14); when the pushing chassis (114) drives the pushing plate (13) and the cross bar (161) to move toward the bottom of the screen cylinder (2), the outlets of each pair of guide holes (113) distributed toward the surface of the pushing chassis (114) are connected to the washing holes (14).

7. The intermediate liquid feeding pipe structure of a double-push and double-outlet pusher centrifuge according to claim 2, characterized in that: One end of the main pipeline (1) is connected to the suspension slurry pipe via a feed flange (17); the elbow (12) is provided with a washing flange (18) after passing through the main pipeline (1) away from the secondary pipeline (11); the elbow (12) is connected to the washing liquid pipe via the washing flange (18).

8. The intermediate liquid feeding pipe structure of a double-push and double-outlet pusher centrifuge according to claim 7, characterized in that: The method for installing the elbow (12), the secondary pipeline (11) and the main pipeline (1) is as follows: The first step is to weld one end of the elbow (12) to one side of the secondary pipe (11); Step 2: A communication hole (19) is provided on the main pipe (1) and is connected to the elbow (12) away from the secondary pipe (11). The secondary pipe (11) and the elbow (12) are then inserted into the main pipe (1) together so that one end of the elbow (12) is connected to the communication hole (19). At this time, the elbow (12) is welded to the wall of the communication hole (19) outside the main pipe (1); Step 3: Weld a straight tube (191) to the outer wall of the main pipeline (1) so that the straight tube (191) is connected to the curved tube (12). At this time, the washing flange (18) is welded to the straight tube (191).

9. The intermediate liquid feeding pipe structure of a double-push and double-outlet pusher centrifuge according to claim 8, characterized in that: Two or more reinforcing ribs (115) of equal height are evenly arranged on the outer wall of the secondary pipe (11) in the circumferential direction. When the secondary pipe (11) enters the main pipe (1), the ends of each reinforcing rib away from the secondary pipe (11) are in contact with the inner wall of the main pipe (1).

10. The intermediate liquid feeding pipe structure of a double-push and double-outlet pusher centrifuge according to claim 9, characterized in that: After the secondary pipe (11) is placed in the main pipe (1) in the second step, the secondary pipe (11) is made coaxial with the main pipe (1) by means of the equal-height reinforcing ribs (115), and a stopper (192) is provided on the inner wall of the main pipe (1) and is located on one side of the equal-height reinforcing ribs (115). When one side of the equal-height reinforcing ribs (115) contacts the stopper (192), one end of the elbow (12) is connected to the connecting hole (19).

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