Anti-blocking solid-liquid separation equipment

Abstract

The invention relates to anti-blocking solid-liquid separation equipment which effectively solves the problems that the separation effect of materials with different water contents is poor, the filtering precision is low, and a filter screen is easy to block. According to the technical scheme, the device comprises a support, a rotatable filter cylinder is arranged in the middle of the support, a water receiving barrel with openings in the upper side and the rear side is arranged in the filter cylinder, and the water receiving barrel is fixed; a secondary filter screen is arranged in the water receiving bucket; the filter cylinder rotates to drive the secondary filter screen to swing in a reciprocating manner; an arc-shaped shell located over the filter cartridge is installed on the support, and the lower side of the arc-shaped shell is open and is attached to the filter cartridge; a feeding baffle and a discharging baffle are arranged on the left side and the right side of the arc-shaped shell. The arc-shaped shell is connected with a feeding pipe; a plurality of extrusion blocks are uniformly distributed on the circumference of the filter cartridge, the extrusion blocks can penetrate through the arc-shaped shell after rotating along with the filter cartridge, and the filter cartridge can be suitable for solid-liquid mixtures with different water contents through different rotating speeds of the filter cartridge; secondary filtration is achieved, the filter cartridge is self-cleaned, and blockage is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation, in particular to anti-blocking solid-liquid separation equipment. Background Art

[0002] Common solid-liquid separation equipment mainly includes: plate and frame filter press, chamber filter press, vacuum filter, centrifuge, horizontal screw extruder, etc. Different types of equipment are used in different scenarios. Among them, horizontal screw extruders are usually used in manure-water separation, sewage treatment, chemical raw material separation, crop processing, etc.

[0003] The horizontal screw extruder has a good effect on solid-liquid separation with normal water content. However, it has a poor effect on solid-liquid separation with low water content. Taking feces or sewage mixture as an example, feces or sewage will generally be temporarily stored in a sedimentation tank for storage and pre-separation, which leads to a higher water content in the feces in the early stage of suction separation. However, for feces with a high water content, due to the small amount of solid components, the solid material is difficult to gather and squeeze quickly, resulting in difficulty in establishing the extrusion force inside the screw extrusion mechanism, and due to the large feces flow, the humidity of the solid material at the outlet is high.

[0004] In addition, the aperture of the screen commonly used in the horizontal screw extruder industry is 0.8-1mm, mainly to avoid excessive internal pressure. It is impossible to use a screen with a smaller aperture, which leads to poor filtration accuracy and more solid materials in the clear liquid. The screen cannot be self-cleaned or replaced, and is easily blocked, affecting work efficiency.

[0005] In summary, for solid-liquid mixtures with different water contents, the use of a screw extruder cannot effectively solve the extrusion separation problem when the water content is high, and the filtration accuracy is poor, resulting in more solid materials in the clear liquid. Summary of the invention

[0006] In view of the above situation, in order to solve the problems existing in the prior art, the purpose of the present invention is to provide an anti-blocking solid-liquid separation equipment, which can effectively solve the problems of poor separation effect of materials with different water contents, low filtration accuracy, and easy clogging of the filter.

[0007] The technical solution includes a bracket, a rotatable filter cartridge is arranged in the middle of the bracket, a water receiving bucket with openings on the upper side and the rear side is arranged inside the filter cartridge, and the water receiving bucket is fixed; a secondary filter screen is arranged inside the water receiving bucket; the rotation of the filter cartridge can cause the secondary filter screen to swing back and forth; An arc-shaped shell is installed on the bracket and is located directly above the filter cartridge. The lower side of the arc-shaped shell is open and fits with the filter cartridge. A feed baffle and a discharge baffle are arranged on the left and right sides of the arc-shaped shell. A feed pipe is connected to the arc-shaped shell. A plurality of extrusion blocks are evenly distributed on the circumference of the filter cartridge, and the extrusion blocks can pass through the arc-shaped shell after rotating with the filter cartridge.

[0008] Preferably, the bracket is composed of two front and rear vertical plates and multiple support columns between the vertical plates; multiple outer rollers are arranged on the front and rear vertical plates, and the outer rollers are in contact with the outer edge surface of the filter cartridge; one of the outer rollers is driven by the main motor.

[0009] Preferably, mounting grooves are provided at the left and right ends of the arc-shaped shell, and the feed baffle and the discharge baffle are respectively located in the left and right mounting grooves, and a plurality of compression springs are provided in the mounting grooves; the feed baffle and the discharge baffle have arc chamfered ends in contact with the filter cartridge; the cross-section of the extrusion block is triangular; an auxiliary motor and a driving shaft driven by the auxiliary motor are installed on the bracket, a rope is wound around the driving shaft, and the free end of the rope is fixed to the arc chamfered end of the discharge baffle.

[0010] Preferably, a plurality of inner rollers contacting the inner wall of the filter cartridge are fixed on the outer side of the water receiving bucket; and the rear end of the water receiving bucket is fixed on the bracket via a support rod.

[0011] Preferably, a fixed shaft in the front-to-back direction is fixed in the water receiving bucket, a sleeve is fixed to the secondary filter screen via multiple support rods, the sleeve is sleeved on the outside of the fixed shaft, a passive lever is fixed directly above the sleeve, and multiple active levers are evenly distributed on the circumference of the inner wall of the filter cartridge.

[0012] Preferably, the left and right sides of the water receiving bucket are provided with straight edge sections which are gap-matched with the inner wall of the filter cartridge, and a clearance groove corresponding to the active lever is opened in the middle of the straight edge section.

[0013] Preferably, a pressure sensor is provided on the discharge baffle, and the pressure sensor is connected to a controller, and the controller controls the start and stop of the auxiliary motor.

[0014] Preferably, an air outlet nozzle located directly below the filter cartridge is fixed on the bracket.

[0015] Advantages of the present invention: 1. Through different rotation speeds of the filter cartridge, it can be applied to solid-liquid mixtures with different water contents; in the early stage when the water content is relatively high, low rotation speed can quickly filter the liquid; when the water content is small, high rotation speed can increase the extrusion frequency and avoid blockage.

[0016] 2. By rotating the filter cartridge, the filter screen involved in the filtration part can be replaced in real time, thus avoiding filter screen clogging.

[0017] 3. Through secondary filtration, the filtering accuracy can be effectively improved without the need for additional drive, and the entire structure is cleverly coordinated.

[0018] 4. By controlling the opening timing of the discharge baffle, the extrusion force can be effectively adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional schematic diagram of the present invention Figure Ⅰ .

[0020] Figure 2 A three-dimensional schematic diagram of the present invention Figure II .

[0021] Figure 3 It is an exploded view of the cooperation of the filter cartridge 2, the water receiving bucket 3, and the secondary filter screen 4 of the present invention.

[0022] Figure 4 It is the front view of the present invention.

[0023] Figure 5 It is a front cross-sectional view of the present invention.

[0024] Figure 6 It is the right side view of the present invention.

[0025] Figure 7 It is a top view of the present invention. DETAILED DESCRIPTION

[0026] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0027] This embodiment provides an anti-blocking solid-liquid separation device, including an external frame structure, namely a bracket 1. The structure inside the bracket 1 is mainly divided into two parts, the upper part is the feeding and extrusion part; the lower part is mainly the filtering part.

[0028] The filtering part at the bottom is mainly composed of three layers, the outermost layer is the filter cartridge 2, the middle layer is the water receiving bucket 3, and the innermost layer is the secondary filter screen 4. The front and rear ends of the filter cartridge 2 are both open, the front end of the water receiving bucket 3 has an end cover, the top and rear are open, and the secondary filter screen 4 is an arc-shaped filter screen sheet, with an end cover set at the front end. The rear end of the secondary filter screen 4 exceeds the rear end of the water receiving bucket 3, and the rear end of the water receiving bucket 3 exceeds the rear end of the filter cartridge 2. In this way, it is convenient to receive the corresponding discharged materials at the rear end. The filter cartridge 2 can rotate, the water receiving bucket 3 is fixed, and the secondary filter screen 4 swings back and forth. The secondary filter screen 4 is at the upper opening of the water receiving bucket 3, and can receive the liquid filtered from the filter cartridge 2, which flows into the water receiving bucket 3 after being filtered by the secondary filter screen 4.

[0029] In some embodiments, in order to realize the rotation installation of the filter cartridge 2, the bracket 1 is composed of two front and rear vertical plates and multiple support columns between the vertical plates; multiple outer rollers 10 are arranged on the front and rear vertical plates, and the outer rollers 10 are in contact with the outer edge surface of the filter cartridge 2; one of the outer rollers 10 is driven by the main motor 11. Multiple inner rollers 16 in contact with the inner wall of the filter cartridge 2 are fixed on the outer side of the water receiving bucket 3. Thereby, the positioning of the filter cartridge 2 and the rotation of the filter cartridge 2 are realized. At the same time, the rear end of the water receiving bucket 3 is fixed to the bracket 1 through the support rod to realize the fixed installation of the water receiving bucket 3.

[0030] In some embodiments, in order to achieve the installation and swinging of the secondary filter screen 4, a fixed shaft 17 in the front-to-back direction is fixed in the water receiving bucket 3, and a sleeve 18 is fixed to the secondary filter screen 4 through multiple support rods. The sleeve 18 is sleeved on the outside of the fixed shaft 17, and a passive lever 19 is fixed directly above the sleeve 18. A plurality of active levers 20 are evenly distributed on the circumference of the inner wall of the filter cartridge 2. At the same time, straight edge sections 21 that match the gap with the inner wall of the filter cartridge 2 are provided on the left and right sides of the water receiving bucket 3, and a clearance groove 22 corresponding to the active lever 20 is provided in the middle of the straight edge section 21. In this way, after the filter cartridge 2 is rotated, the passive lever 19 is moved by the active lever 20 to achieve the unidirectional swinging of the secondary filter screen 4. When the active lever 20 no longer moves the passive lever 19, the secondary filter screen 4 is reset under the action of its own weight, achieving the purpose of reciprocating swinging screening.

[0031] In some embodiments, in order to better self-clean the filter cartridge 2, an air outlet nozzle is fixed on the bracket 1 and is located directly below the filter cartridge 2. The air pump and the air outlet nozzle are connected by a pipeline, so that the high-speed airflow from the air outlet nozzle cleans the side wall of the filter cartridge 2, effectively alleviating the blockage. The solid materials blown into the filter cartridge 2 will re-participate in filtration and extrusion.

[0032] The feeding and extrusion part located at the top mainly includes an arc-shaped shell 5 located directly above the filter cartridge 2, the lower side of the arc-shaped shell 5 is open and fits with the filter cartridge 2; a feed baffle 6 and a discharge baffle 7 are arranged on the left and right sides of the arc-shaped shell 5; a feed pipe 8 is connected to the arc-shaped shell 5; two extrusion blocks 9 are evenly distributed on the circumference of the filter cartridge 2, and the extrusion blocks 9 can pass through the arc-shaped shell 5 after the filter cartridge 2 rotates.

[0033] In some embodiments, in order to realize the opening and closing of the feed baffle 6 and the discharge baffle 7; the left and right ends of the arc-shaped shell 5 are provided with installation grooves 12, the feed baffle 6 and the discharge baffle 7 are respectively located in the left and right installation grooves 12, and a plurality of compression springs 13 are provided in the installation grooves 12; the feed baffle 6 and the discharge baffle 7, the ends in contact with the filter cartridge 2 are chamfered in an arc shape; the cross-section of the extrusion block 9 is triangular; an auxiliary motor 14 and a driving shaft driven by the auxiliary motor 14 are installed on the bracket 1, a rope 15 is wound around the driving shaft, and the free end of the rope 15 is fixed to the chamfered end of the discharge baffle 7.

[0034] In order to realize pressure control, a pressure sensor is provided on the discharge baffle 7, and the pressure sensor is connected to the controller, and the controller controls the start and stop of the auxiliary motor 14. By setting different pressure values, the start timing of the auxiliary motor 14 can be controlled, and then the extrusion stroke and extrusion force can be controlled.

[0035] The specific use process and working principle of this device are as follows: When the device is in use, the front end of the bracket 1 can be raised to make the front side of the entire device high and the rear side low, which is convenient for material flow. First, the mixed material enters the arc-shaped shell 5 through the suction pump from the feed pipe 8. Since the front, back, left and right sides of the arc-shaped shell 5 are all closed at this time, the material will be filtered through the filter cartridge 2, and the solid material will remain on the outside of the filter cartridge 2. The liquid will pass through the filter cartridge 2 and flow downward to the secondary filter screen 4. After fine filtration by the secondary filter screen 4, the clear liquid passes through the secondary filter screen 4 and flows into the water receiving bucket 3. It is discharged from the rear end of the water receiving bucket 3. The rear end of the secondary filter screen 4 also carries out corresponding reception, and some solid materials with smaller particle size will be discharged from here.

[0036] When the main motor 11 is started, the filter cartridge 2 will rotate. At this time, there are three functions. First, the working area of ​​the filter cartridge 2 will be replaced in real time, which avoids the blockage caused by the long-term operation of a single area of ​​the filter cartridge 2. At the same time, with the actual cleaning of the air outlet, it can ensure that the filter cartridge 2 is always in an efficient filtering state. Blockage is avoided, and real-time replacement and self-cleaning are achieved.

[0037] Secondly, an active lever 20 is provided inside the filter cartridge 2. As the filter cartridge 2 rotates, the active lever 20 will swing the passive lever 19 on the secondary filter screen 4 to realize the reciprocating swing of the secondary filter screen 4. The reciprocating swing of the secondary filter screen 4 can improve the filtering effect of the secondary filter screen 4, avoid clogging of the secondary filter screen 4, and quickly discharge residues on the secondary filter screen 4.

[0038] The third and most important function is the extrusion function. Since there are two extrusion blocks 9 on the outer wall of the filter cartridge 2, when the extrusion block 9 is rotated clockwise until it contacts the feed baffle 6, the inclined surface of the extrusion block 9 will push open the feed baffle 6, allowing the extrusion block 9 to enter the interior of the arc-shaped shell 5, and the feed baffle 6 will always contact the inclined surfaces on both sides of the extrusion block 9 to prevent the mixed material in the arc-shaped shell 5 from leaking out. After the extrusion block 9 enters the arc-shaped shell 5, the extrusion block 9 will compress the solid material in the arc-shaped shell 5 to the left and squeeze and dehydrate it; until the pressure sensor on the discharge baffle 7 reaches the preset value, the auxiliary motor 14 is started, and the discharge baffle 7 is driven to move upward through the rope 15, opening the left outlet of the arc-shaped shell 5, and the extruded material is discharged from the left side. When the high point of the extrusion block 9 passes through the discharge baffle 7, the auxiliary motor 14 is reset, and the discharge baffle 7 immediately falls under the use of the compression spring 13. The lower end surface of the discharge baffle 7, that is, the arc segment, will fit on the rear side surface of the extrusion block 9, preventing the mixed material from leaking from the left side.

[0039] By squeezing, the solid material can be further dehydrated under pressure, and the interior of the arc-shaped shell 5 can be emptied at the same time.

[0040] Therefore, by controlling the rotation speed of the filter cartridge 2 , the frequency of extrusion per unit time can be controlled to ensure smooth extrusion filtration in the arc-shaped housing 5 .

[0041] When encountering a high water content, since there is less solid material, frequent squeezing is not required, and the filter cartridge 2 can rotate slowly, or reciprocate in the area between the two squeezing blocks 9, that is, there is no need for the squeezing blocks 9 to enter the arc-shaped shell 5; at this time, only relying on the pressure of the suction pump or the weight of the material, it is possible to achieve rapid filtration of materials with high water content and self-cleaning of the filter cartridge 2.

[0042] When the water content is medium or low, the filter cartridge 2 needs to be rotated clockwise at high speed to achieve timely extrusion.

[0043] In the whole device, the outer side of the filter cartridge 2 is the discharge area of ​​the extruded material. The solid material attached to the extrusion block 9 will also be scraped off by the feed baffle 6 when the extrusion block 9 contacts the feed baffle 6 to avoid re-extrusion.

Claims

1. An anti-blocking solid-liquid separation device, comprising a support (1), wherein a rotatable filter cartridge (2) is provided in the middle of the support (1), characterized in that: A water receiving bucket (3) with openings on the upper side and the rear side is provided inside the filter cartridge (2), and the water receiving bucket (3) is fixed; a secondary filter screen (4) is provided inside the water receiving bucket (3); the filter cartridge (2) is rotated to move the secondary filter screen (4) to swing back and forth; An arc-shaped shell (5) is mounted on the bracket (1) and is located directly above the filter cartridge (2); the lower side of the arc-shaped shell (5) is open and fits the filter cartridge (2); a feed baffle (6) and a discharge baffle (7) are arranged on the left and right sides of the arc-shaped shell (5); and a feed pipe (8) is connected to the arc-shaped shell (5); A plurality of extrusion blocks (9) are evenly distributed on the circumference of the filter cartridge (2). The extrusion blocks (9) can pass through the arc-shaped housing (5) as the filter cartridge (2) rotates.

2. The anti-blocking solid-liquid separation equipment according to claim 1, characterized in that: The support (1) is composed of two front and rear vertical plates and a plurality of support columns between the vertical plates; a plurality of outer rollers (10) are provided on the front and rear vertical plates, and the outer rollers (10) are in contact with the outer edge surface of the filter cartridge (2); one of the outer rollers (10) is driven by a main motor (11).

3. The anti-blocking solid-liquid separation equipment according to claim 1, characterized in that: The arc-shaped housing (5) is provided with mounting grooves (12) at the left and right ends, the feed baffle (6) and the discharge baffle (7) are respectively located in the left and right mounting grooves (12), and a plurality of compression springs (13) are provided in the mounting grooves (12); the feed baffle (6) and the discharge baffle (7) have arc chamfered ends in contact with the filter cartridge (2); the cross section of the extrusion block (9) is triangular; an auxiliary motor (14) and a driving shaft driven by the auxiliary motor (14) are installed on the bracket (1), a rope (15) is wound around the driving shaft, and the free end of the rope (15) is fixed to the arc chamfered end of the discharge baffle (7).

4. The anti-blocking solid-liquid separation equipment according to claim 1, characterized in that: A plurality of inner rollers (16) in contact with the inner wall of the filter cartridge (2) are fixed on the outer side of the water receiving bucket (3); the rear end of the water receiving bucket (3) is fixed to the bracket (1) via a support rod.

5. The anti-blocking solid-liquid separation equipment according to claim 1, characterized in that: A fixed shaft (17) in the front-to-back direction is fixed inside the water receiving bucket (3); a sleeve (18) is fixed to the secondary filter screen (4) via a plurality of support rods; the sleeve (18) is sleeved on the outside of the fixed shaft (17); a passive lever (19) is fixed directly above the sleeve (18); and a plurality of active levers (20) are evenly distributed on the circumference of the inner wall of the filter cartridge (2).

6. The anti-blocking solid-liquid separation equipment according to claim 1, characterized in that: The left and right sides of the water receiving bucket (3) are provided with straight edge sections (21) that are gap-matched with the inner wall of the filter cartridge (2), and a clearance groove (22) corresponding to the active lever (20) is provided in the middle of the straight edge section (21).

7. The anti-blocking solid-liquid separation equipment according to claim 1, characterized in that: The discharge baffle (7) is provided with a pressure sensor, which is connected to a controller, and the controller controls the start and stop of the auxiliary motor (14).

8. The anti-blocking solid-liquid separation equipment according to claim 1, characterized in that: The bracket (1) is fixed with an air outlet nozzle located directly below the filter cartridge (12).

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