Slurry pipeline filtration device for wet-molding electrical porcelain

Abstract

The present invention discloses a slurry pipeline filtering device for wet-process forming electrical porcelain, comprising an input pipeline (1) and an output pipeline (2); a multi-partition filter screen (3) rotatably matched with the output pipeline (2) is provided in the output pipeline (2); at least one partition of the multi-partition filter screen (3) surrounds the outlet of the input pipeline (1), and the multi-partition filter screen (3) can be rotated to switch the partition surrounding the outlet of the input pipeline (1); the filtering device is used in a slurry pipeline for wet-process forming electrical porcelain, thereby avoiding the introduction of solid impurities into the slurry, and after the filter screen is saturated, a new partition can be switched to align with the input pipeline, and the newly switched partition can continue to work smoothly. When all the partitions are switched to work and saturated, the filter screen can be disassembled and cleaned, thereby greatly extending the working time of the filter screen compared with the traditional fixed filter screen.

Description

Technical Field

[0001] The invention relates to the technical field of electrical porcelain production equipment components, in particular to a slurry pipeline filtering device for wet-process formed electrical porcelain. Background Art

[0002] Wet forming is one of the production methods of electrical porcelain. Impurities in the mud are the main factors affecting the performance of electrical porcelain insulators, especially the rubber sealing ring debris produced by the plunger pump. This is because the plunger pump is the main equipment for preparing mud by wet filter pressing. After the mud is screened to remove iron, the plunger pump oil pump drives two ceramic plungers to pressurize the mud and inject it into the filter press. The ceramic plunger works in a reciprocating motion. In order to ensure the pressure, a rubber sealing ring is added between the cylinder body and the plunger and water is added to cool it to ensure the seal. Since the reciprocating motion of the ceramic plunger can easily cause the rubber sealing ring to wear, the sealing ring debris will enter the slurry, resulting in pores or melt spots in the porcelain blank after firing. These defects become the weak links of mechanical damage and electrical breakdown of the porcelain insulator, seriously affecting the performance of the insulator. Therefore, filtering the mud slurry output by the plunger pump for impurities to avoid introducing solid impurities into the mud of the filter press is the key to ensuring product performance requirements and improving product qualification rate. However, installing a traditional pipe filter in the output pipe of the plunger pump will cause the filter to be saturated and blocked too quickly due to the large mud flow output by the plunger pump, resulting in frequent disassembly and cleaning of the filter, seriously affecting production progress and economic benefits. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art to at least a certain extent: to provide a slurry pipeline filtering device for wet-molded electrical porcelain, which does not require frequent disassembly and cleaning of the filter screen, thereby extending the service life.

[0004] The technical solution of the present invention is as follows: a slurry pipeline filtering device for wet-molded electrical porcelain, comprising an input pipeline and an output pipeline; a multi-partition filter screen is provided in the output pipeline and is rotatably matched with the output pipeline; at least one partition of the multi-partition filter screen surrounds the outlet of the input pipeline and the multi-partition filter screen can be rotated to switch the partition surrounding the outlet of the input pipeline.

[0005] As an optimization, the multi-partition filter screen includes a cylindrical filter screen, a radial flange provided on the upper end of the cylindrical filter screen and an annular groove provided at the lower end of the cylindrical filter screen; it is used to accommodate and collect impurities; the outer wall of the annular groove is gap-fitted with the inner wall of the output pipe; the upper end edge of the outer wall of the annular groove is located below the outlet of the input pipe; and filter holes are evenly arranged at the bottom of the annular groove.

[0006] As an optimization, the outer edge of the radial flange is clearance-matched with the inner wall of the output pipe; the lower surface of the radial flange is located above the outlet of the input pipe;

[0007] As an optimization, the cylindrical filter screen is evenly provided with a plurality of partition plates around its circumference, for dividing the cylindrical filter screen into a plurality of partitions. The partition plates are welded or integrally formed with the cylindrical filter screen, the radial flange, and the side wall of the annular groove.

[0008] As an optimization, the outer edge of the partition plate is loosely matched with the inner wall of the output pipe; when any partition of the multi-partition filter screen faces the outlet of the input pipe, the outer edges of the partition plates constituting the partition are located on both sides of the outlet of the input pipe;

[0009] As an optimization, a partition switching drive assembly is provided at the upper end of the output pipe, which is used to drive the rotation and switching of the multi-partition filter to the partition facing the outlet of the input pipe.

[0010] As an optimization, the partition switching drive assembly includes a sealing cover arranged at the upper end of the output pipe, a turntable rotatably matched with the sealing cover, and an adjusting nut connected to the turntable by a thread.

[0011] The multi-partition filter screen is coaxially fixed to the turntable.

[0012] Specifically, the radial flange upper surface of the multi-partition filter screen and the lower surface of the turntable are fixed by a connecting rod.

[0013] As an optimization, the sealing cover is connected to the output pipe through a flange; the sealing cover is provided with a center hole, and the upper surface of the turntable is coaxially provided with a screw that can rotatably cooperate with the center hole, and the screw passes through the center hole and is fixed to the adjusting nut.

[0014] As a further optimization, filtering holes are evenly arranged on the partition plate.

[0015] As a further optimization, a diverter rib is radially provided in the input pipe at the outlet thereof.

[0016] Preferably, the filter aperture is smaller than the filter aperture of the cylindrical filter screen.

[0017] The present invention also improves the application of a slurry pipeline filtering device for wet-process formed electrical porcelain, which is used for slurry filtering between a plunger pump and a filter press in the production of wet-process formed electrical porcelain.

[0018] The present invention has the following beneficial effects: the filter device is used in a slurry pipeline for wet-process forming electrical porcelain, the input pipeline is connected to the slurry outlet pipeline of the plunger pump, and the output pipeline is connected to the input pipeline of the filter press. When the mud slurry is output from the slurry outlet pipeline of the plunger pump, the slurry passes through the filter device, effectively filtering out impurities in the mud slurry and rubber sealing ring debris worn by the plunger operation, thereby avoiding the introduction of solid impurities into the mud, ensuring process and product performance requirements, and improving product qualification rate. After the filter screen is saturated, a new partition can be switched to align with the input pipeline, and the newly switched partition can continue to work smoothly. When all partitions are switched to work and saturated, the filter screen can be disassembled and cleaned. Compared with the traditional fixed filter screen, the working time of the filter screen is greatly extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the slurry pipeline filtering device for wet-molded electrical porcelain in Example 1.

[0020] Figure 2 This is a schematic diagram of the explosion structure of the slurry pipeline filtering device for wet-process formed electrical porcelain in Example 1.

[0021] Figure 3 This is a partial cross-sectional structural diagram of the slurry pipeline filtering device for wet-process formed electrical porcelain in Example 1.

[0022] Figure 4 This is a schematic diagram of the main structure of the slurry pipeline filtering device for wet-molded electrical porcelain in Example 1.

[0023] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the AA axis.

[0024] Figure 6 This is a schematic diagram of the explosion structure of the slurry pipeline filtering device for wet-process formed electrical porcelain in Example 2.

[0025] Figure 7 This is a schematic diagram of the main structure of the slurry pipeline filtering device for wet-molded electrical porcelain in Example 2.

[0026] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure in the middle BB direction.

[0027] Figure 9 This is a schematic diagram of the three-dimensional cross-sectional structure of the slurry pipeline filtering device for wet-process formed electrical porcelain in Example 2.

[0028] Figure 10 This is a schematic diagram of the usage status of the slurry pipeline filtering device for wet-process formed electrical porcelain in Example 2.

[0029] Figure 11 for Figure 10Schematic diagram of the usage status after switching partitions.

[0030] Among them, 1. Input pipe; 2. Output pipe; 3. Multi-partition filter screen; 4. Cylindrical filter screen; 5. Radial flange; 6. Annular groove; 7. Partition plate; 8. Sealing cover; 9. Turntable; 10. Adjusting nut; 11. Diverter rib. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] Example 1

[0033] Figure 1-5 An example of a slurry pipeline filtering device for wet-process formed electrical porcelain is provided, comprising an input pipeline 1 and an output pipeline 2; a multi-partition filter screen 3 is provided in the output pipeline 2 and rotatably engaged therewith; one partition of the multi-partition filter screen 3 surrounds the outlet of the input pipeline 1 and the multi-partition filter screen 3 can be rotated to switch the partition surrounding the outlet of the input pipeline 1.

[0034] The multi-zone filter 3 includes a cylindrical filter 4, a radial flange 5 at the upper end of the cylindrical filter 4, and an annular groove 6 at the lower end of the cylindrical filter 4. The annular groove 6 is used to accommodate and collect impurities. The outer wall of the annular groove 6 is clearance-matched with the inner wall of the output pipe 2. The upper edge of the outer wall of the annular groove 6 is located below the outlet of the input pipe 1. The bottom of the annular groove 6 is evenly distributed with filter holes. The filter holes at the bottom of the annular groove 6 have a smaller aperture than the filter holes of the cylindrical filter 4. This prevents liquid accumulation in the annular groove 6 while maximizing the collection and storage of filtered impurities. The filter hole diameter of the cylindrical filter 4 is determined according to actual needs.

[0035] The outer edge of the radial flange 5 is loosely fitted with the inner wall of the output pipe 2; the lower surface of the radial flange 5 is located above the outlet of the input pipe 1;

[0036] The cylindrical filter screen 4 is evenly provided with three partition plates 7 in the circumferential direction; used to divide the cylindrical filter screen 4 into three partitions, such as Figure 5 As shown, the included angle between the three partition plates is 120°. The partition plates 7 are welded to the cylindrical filter screen 4, the radial flange 5, and the sidewall of the annular groove 6. In other words, the annular groove 6 is also divided into several areas by the partition plates 7. The input pipe 1 and the output pipe 2 are vertically connected. The relationship between the inner diameter Φ1 of the input pipe 1 and the inner diameter Φ2 of the output pipe 2 is Φ1 ≤ Φ2 * sin(π / 3).

[0037] The outer edge of the partition plate 7 is in clearance with the inner wall of the output pipe 2; when any partition of the multi-partition filter 3 is facing the outlet of the input pipe 1, the outer edges of the partition plate 7 constituting the partition are located on both sides of the outlet of the input pipe 1, such as Figure 3 and Figure 5 As shown, the partition formed by the partition plates 7, radial flanges 5 and the side walls of the annular groove 6 on both sides of the outlet of the input pipe 1 completely surrounds the outlet of the input pipe 1 and filters the fluid passing through the outlet.

[0038] The gaps between the outer edge of the radial flange 5, the outer wall of the annular groove 6, the outer edge of the partition plate 7, and the inner wall of the output pipe 2 are all smaller than the diameter of the filter holes at the bottom of the annular groove 6, or are 0 mm. The multi-partition filter 3 is coaxially disposed within the output pipe 2.

[0039] A partition switching drive assembly is provided at the upper end of the output pipe 2 for driving the rotation of the multi-partition filter 3 to switch the partition facing the outlet of the input pipe 1 .

[0040] like Figure 2 As shown, the partition switching drive assembly includes a sealing cover 8 provided at the upper end of the output pipe 2, a turntable 9 rotatably matched with the sealing cover 8, and an adjusting nut 10 connected to the turntable 9 by threads.

[0041] The multi-partition filter 3 is coaxially fixed to the turntable 9 .

[0042] The upper surface of the radial flange 5 of the multi-partition filter 3 and the lower surface of the turntable 9 are fixed via a connecting rod.

[0043] The sealing cover 8 is connected to the output pipe 2 through a flange; the sealing cover 8 is provided with a center hole, and the upper surface of the turntable 9 is coaxially provided with a screw that can rotatably cooperate with the center hole. The screw passes through the center hole and is fixed to the adjusting nut 10.

[0044] In order to improve the rotational sealing between the sealing cover 8 and the turntable 9, a sealing ring groove is provided on the upper surface of the turntable 9 for installing a sealing ring.

[0045] The end of the screw is provided with arrows in the form of equilateral triangles pointing to different partitions, indicating the center positions of the three partitions and conveniently aligning the partitions adjusted and switched by the adjusting nut 10 with the axis of the input pipe 1. Specifically, an indicator line passing through the center of the sealing cover 8 and coplanar with the axis of the input pipe 1 can be provided on the sealing cover 8. In this way, by rotating the adjusting nut 10 in the tightening direction, the screw can simultaneously drive the seal between the sealing cover 8 and the turntable 9 and rotate the turntable 9. When any corner of the equilateral triangle arrows aligns with the above-mentioned indicator line, the alignment and switching of the partitions of the multi-partition filter 3 with the input pipe 1 are achieved.

[0046] This filter device is used in a slurry pipeline for wet-process electric porcelain molding. The input pipeline 1 is connected to the slurry outlet pipeline of the plunger pump, and the output pipeline 2 is connected to the input pipeline of the filter press. When the slurry is discharged from the plunger pump outlet pipeline, the slurry passes through the filter device, effectively filtering out impurities in the slurry and rubber seal debris caused by piston operation. This prevents the introduction of solid impurities into the slurry, ensures process and product performance requirements, and improves product qualification rate. After the filter screen is saturated, the rotating disk 9 can be rotated by rotating the adjusting nut 10. The rotating disk 9 drives the multi-zone filter screen 3 to rotate via a connecting rod, switching a new zone to align with the input pipeline 1. The specific alignment operation is determined by whether one corner of the arrow of the equilateral triangle is aligned with the indicator line. The newly switched zone can continue to operate smoothly. When all zones are switched and saturated, the filter screen can be removed and cleaned. Compared with traditional fixed filter screens, the filter screen operating time is greatly extended. The annular groove 6 can accommodate and collect more impurities, extending the saturation time of the cylindrical filter screen 4. The device of the present invention requires little investment, is simple and practical, and solves the long-standing problem of seal ring debris and other harmful solid particles being introduced into the green body of wet-molded porcelain insulators. Furthermore, the device extends the seal ring replacement cycle, reducing costs and labor intensity. The seal ring replacement cycle can be extended from 7-10 days to over 30 days, and the sieve plate cleaning of the roughing mill can be improved from irregular to weekly, resulting in long-term economic benefits.

[0047] Example 2

[0048] like Figure 6-9As shown, as a further improvement to Example 1, this embodiment features uniformly spaced filter holes on the partition plates 7, with the filter holes having the same diameter as the filter holes in the cylindrical filter screen 4. A diverter rib 11 is radially disposed at the outlet of the input pipe 1. The diverter rib 11 is longitudinally disposed within the input pipe 1 and has a triangular cross-section. The diverter rib 11 diverts the fluid entering the input pipe 1 to the partition plates 7 on either side of the cylindrical filter screen 4. This improved structure not only increases the effective flux of the multi-partition filter screen 3 but also further delays filter screen saturation, enabling the screen's zone switching and backwashing self-cleaning effect.

[0049] The following combination Figure 10-11 The working principle of this embodiment is described. Figure 10 The middle U partition is opposite to the outlet of the input pipe 1. Due to the presence of the diverter rib 11, the mud and impurities are prevented from directly impacting the cylindrical filter screen 4, and the impurities are effectively slowed down from being embedded and attached in the filter holes of the cylindrical filter screen 4; and the diverter rib 11 diverts the fluid of the input pipe 1 to the partition plates 7 on both sides of the direct impact, so that the impurities are mainly accumulated on the filter holes of the partition plates 7. After the impurities on the partition plates 7 are saturated and switched to the W zone, the impurities on the partition plates 7 at the boundary between the U zone and the W zone are rotated to the back of the fluid impact, thereby recoil-separating the impurities originally accumulated and attached to the partition plates 7 and collecting them into the annular groove 6, realizing the self-purification effect of the filter screen. The same is true when the W zone filter screen is switched to the V zone after being saturated. Therefore, the above structure can realize the recoil essence effect of the partition plate 7 when switching partitions, which can further extend the effective working time of the filter screen in Example 1, and has long-term economic benefits when used in slurry pipelines for wet-process electric porcelain.

[0050] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0051] Various changes and modifications will undoubtedly become apparent to those skilled in the art upon reading the foregoing description. Therefore, the appended claims should be construed to encompass all changes and modifications within the true intent and scope of the present invention. Any and all equivalents within the scope of the claims should be considered to be within the intent and scope of the present invention.

Claims

1. A slurry pipeline filtering device for wet-molding electrical porcelain, characterized in that: It comprises an input pipe (1) and an output pipe (2); a multi-partition filter (3) rotatably matched with the output pipe (2) is provided in the output pipe (2); at least one partition of the multi-partition filter (3) surrounds the outlet of the input pipe (1), and the multi-partition filter (3) can be rotated to switch the partition surrounding the outlet of the input pipe (1); The multi-partition filter (3) comprises a cylindrical filter (4), a radial flange (5) provided at the upper end of the cylindrical filter (4), and an annular groove (6) provided at the lower end of the cylindrical filter (4); the annular groove (6) is used to accommodate and collect impurities; the outer wall of the annular groove (6) is clearance-matched with the inner wall of the output pipe (2); the upper end edge of the outer wall of the annular groove (6) is located below the outlet of the input pipe (1); and the bottom of the annular groove (6) is evenly provided with filter holes; The cylindrical filter screen (4) is evenly provided with a plurality of partition plates (7) in the circumferential direction, which are used to divide the cylindrical filter screen (4) into a plurality of partitions; The outer edge of the partition plate (7) is loosely fitted with the inner wall of the output pipe (2); when any partition of the multi-partition filter (3) faces the outlet of the input pipe (1), the outer edges of the partition plate (7) constituting the partition are located on both sides of the outlet of the input pipe (1); The partition plate (7) is evenly provided with filter holes; A diverter rib (11) is radially provided in the input pipe (1) at its outlet.

2. The slurry pipeline filtering device for wet-molding electrical porcelain according to claim 1, characterized in that: The outer edge of the radial flange (5) is in clearance fit with the inner wall of the output pipe (2); the lower surface of the radial flange (5) is located above the outlet of the input pipe (1).

3. The slurry pipeline filtering device for wet-molding electrical porcelain according to claim 2, characterized in that: A partition switching drive assembly is provided at the upper end of the output pipe (2), which is used to drive the rotation of the multi-partition filter (3) to switch the partition facing the outlet of the input pipe (1).

4. The slurry pipeline filtering device for wet-molding electrical porcelain according to claim 3, characterized in that: The partition switching drive assembly comprises a sealing cover (8) provided at the upper end of the output pipe (2), a turntable (9) rotatably engaged with the sealing cover (8), and an adjusting nut (10) threadedly connected to the turntable (9); the multi-partition filter (3) is coaxially fixed to the turntable (9).

5. The slurry pipeline filtering device for wet-molding electrical porcelain according to claim 4, characterized in that: The sealing cover (8) is connected to the output pipe (2) via a flange; the sealing cover (8) is provided with a center hole, and the upper surface of the turntable (9) is coaxially provided with a screw that is rotatably matched with the center hole, and the screw passes through the center hole and is fixed to the adjusting nut (10).

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