Screw extrusion type solid-liquid separation equipment

Abstract

The utility model discloses spiral extrusion type solid-liquid separation equipment, which relates to the field of solid-liquid separation and comprises a separator, a filter disc is arranged at one end of a rotating rod, a plurality of groups of filter holes are formed in the filter disc, and a liquid guide hole is connected to the bottom of the filter disc. The spiral blade conveys excrement poured into the separator, when the excrement is conveyed in the filter cylinder, most liquid in the excrement can be filtered out from the filter cylinder due to extrusion of the spiral blade, and when the excrement is conveyed to the end of the filter cylinder, the liquid in the excrement can be filtered out from the filter cylinder. Liquid extruded by excrement close to the inner wall of the separation bin flows into the bottom of the separation bin along the inclined inner wall of the separation bin, liquid extruded by excrement close to the filter disc enters the filter disc through the filter holes, and liquid collected in the filter disc flows into the bottom of the separation bin through the liquid guide holes connected with the bottom of the filter disc. The dehydration efficiency of the excrement is improved by shortening the separation path of the extruded liquid in the excrement.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation, specifically a spiral extrusion type solid-liquid separation device. Background Technology

[0002] The screw extrusion solid-liquid separator is a specialized mechanical device used to efficiently separate the solid and liquid components in a mixture. It is widely used in the treatment of livestock and poultry manure. It can effectively separate the solid part of the manure, which can be further processed into organic fertilizer to achieve resource recycling. The liquid part can also meet emission standards after subsequent treatment, which greatly reduces the environmental pressure of livestock and poultry farming and improves the environmental protection level and resource utilization efficiency of the entire farming industry.

[0003] The working principle of the screw extrusion solid-liquid separation equipment is based on screw propulsion and extrusion filtration. The solid-liquid mixture to be processed is evenly conveyed into the equipment through the feeding device. The material moves axially under the push of the screw blades. Due to the limitation of the screen aperture, the liquid part can flow out through the screen, while the solid particles are intercepted inside the screen.

[0004] As the shaft pitch of the screw gradually decreases, the pressure exerted on the material by the screw and the screen gradually increases, causing the liquid inside the material to separate from the material through the screen. Because the liquid separated from the mixture close to the screw needs a long time to permeate before it can flow out through the screen, when the mixture is conveyed to the discharge port by the screw, it still contains some liquid. This results in poor solid-liquid separation effect of the screw extrusion solid-liquid separation equipment for feces. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a spiral extrusion solid-liquid separation device to solve the technical problem that the spiral extrusion solid-liquid separation device has poor solid-liquid separation effect on feces.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a spiral extrusion solid-liquid separation device, comprising a separator, a feed pipe at the top of the separator, a separation chamber inside the separator, a filter cylinder inside the separation chamber, a rotating rod inside the filter cylinder, threaded blades sleeved on the outer wall of the rotating rod, a filter disc at one end of the rotating rod, multiple sets of filter holes inside the filter disc, a liquid guiding hole connected to the bottom of the filter disc, a discharge box on one side of the separator, and an extrusion plate inside the discharge box.

[0007] By adopting the above technical solution, the problem of poor solid-liquid separation effect of screw extrusion solid-liquid separation equipment for feces is solved. The screw blades convey the feces poured into the separator. When the feces are conveyed inside the filter cylinder, most of the liquid in the feces will be filtered out by the screw blades. When the feces are conveyed to the end of the filter cylinder, the liquid squeezed out by the feces near the inner wall of the separation chamber will flow along the inclined inner wall of the separation chamber to the bottom of the separation chamber, while the liquid squeezed out by the feces near the filter plate will enter the filter plate through the filter holes. The liquid collected in the filter plate will flow into the bottom of the separation chamber through the liquid guide hole connected to the bottom of the filter plate. By shortening the separation path of the liquid squeezed out of the feces, the dewatering efficiency of the feces is increased.

[0008] The present invention is further configured such that a motor is installed at the end of the rotating rod, and the pitch of the spiral blades gradually decreases.

[0009] Preferably, the motor drives the spiral blades to rotate via a rotating rod. As the pitch of the spiral blades gradually decreases, the pressure exerted on the feces between the spiral blades and the filter cartridge gradually increases. Under this continuously increasing pressure, the liquid remaining in the feces is further squeezed out through the filter cartridge.

[0010] The present invention is further configured such that a support frame is installed on the outer wall of the filter cartridge, and the support frame is fixedly installed on the inner wall of the separation chamber.

[0011] Preferably, the support frame suspends the filter cartridge at the port on one side of the separation chamber.

[0012] The present invention is further configured such that a fixing column is fixed to the outer wall of the filter disc, and the center points of the filter disc, the separation chamber and the rotating rod are on the same straight line.

[0013] Preferably, when the feces are conveyed to one end of the filter cylinder by the spiral blades, the feces are squeezed along the outer wall of the filter disc to one side of the squeezing plate, so that the feces can be wrapped around the outer wall of the filter disc.

[0014] The present invention is further configured such that the end of the liquid guiding hole is inclined, and the end of the liquid guiding hole is connected to the bottom end of the inner wall of the separation chamber.

[0015] Preferably, the liquid collected in the filter plate flows into the bottom of the separation chamber through the liquid guide hole connected to the bottom of the filter plate. The inclined liquid guide hole can reduce the liquid residue in the liquid guide hole.

[0016] The present invention is further configured such that a spring is installed on one side of the extrusion plate, and one end of the spring is fixed to the inner wall of the discharge box.

[0017] Preferably, the spring will press the squeezing plate against the port of the separation chamber until the squeezing force of the feces at the end of the filter cartridge is greater than the squeezing force of the spring on the squeezing plate, so that the feces can be discharged from the port of the separation chamber.

[0018] The present invention is further configured such that one end of the extrusion plate is provided with two sets of limiting rods, and the ends of the limiting rods are located inside the discharge box.

[0019] Preferably, the limiting rod limits the movement of the extrusion plate to prevent the extrusion plate from tilting due to uneven pressure from the extrusion of feces.

[0020] The present invention is further configured such that the port of the separation chamber and the bottom of the inner wall of the separation chamber are both inclined, and the bottom of the separation chamber is connected to an outlet pipe.

[0021] Preferably, when the feces at one end of the filter cylinder are squeezed, the squeezed liquid flows along the inclined inner wall of the separation chamber and is discharged through the outlet pipe.

[0022] The present invention is further configured such that two sets of scrapers are installed on both sides of the filter disc, and the ends of the scrapers are connected to drive rods, and one end of the drive rod is connected to the end of the rotating rod.

[0023] Preferably, the scraper is configured as an isosceles trapezoid. During the rotation of the rotating rod, the rotation of the rotating rod will drive the two sets of scrapers to rotate on the outer wall of the filter disc through the drive rod, so that the scraper scrapes off the solid feces attached to the filter disc, preventing the solid feces attached to the outer wall of the filter disc from clogging the filter holes on the filter disc.

[0024] In summary, the present invention has the following main advantages:

[0025] 1. This utility model solves the problem of poor solid-liquid separation effect of screw extrusion solid-liquid separation equipment for feces by setting up a separator, spiral blades, filter cylinder, filter disc, extrusion plate and spring. The spiral blades convey the feces poured into the separator. When the feces are conveyed in the filter cylinder, most of the liquid in the feces will be filtered out by the extrusion of the spiral blades. When the feces are conveyed to the end of the filter cylinder, the liquid squeezed out by the feces near the inner wall of the separation chamber will flow into the bottom of the separation chamber along the inclined inner wall of the separation chamber. The liquid squeezed out by the feces near the filter disc will enter the filter disc through the filter holes. The liquid collected in the filter disc will flow into the bottom of the separation chamber through the liquid guide hole connected to the bottom of the filter disc. By shortening the separation path of the liquid squeezed out of the feces, the dehydration efficiency of the feces is increased.

[0026] 2. This utility model is equipped with scrapers, drive rods and rotating rods. Two sets of scrapers are installed on both sides of the filter disc, and the scrapers are set in an isosceles trapezoid. During the rotation of the rotating rod, the rotation of the rotating rod will drive the two sets of scrapers to rotate on the outer wall of the filter disc through the drive rod, so that the scrapers scrape off the solid feces attached to the filter disc, preventing the solid feces attached to the outer wall of the filter disc from clogging the filter holes on the filter disc. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0028] Figure 2 This is an internal sectional view of the separator of this utility model;

[0029] Figure 3 This is a cross-sectional view of the inside of the discharge box of this utility model;

[0030] Figure 4 This is a structural diagram of the internal structure of the filter cartridge of this utility model;

[0031] Figure 5 For the present utility model Figure 2 Enlarged view of Figure A;

[0032] Figure 6 For the present utility model Figure 3 A magnified view of image B.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Separator; 101. Feed pipe; 102. Discharge pipe; 103. Separation chamber; 2. Motor; 201. Rotating rod; 202. Spiral blade; 3. Filter cylinder; 301. Support frame; 4. Discharge box; 5. Extrusion plate; 501. Spring; 502. Limiting rod; 6. Filter disc; 601. Filter holes; 602. Liquid guiding holes; 603. Fixed column; 7. Scraper; 701. Drive rod. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of this utility model will be described below based on its overall structure.

[0037] Please see Figure 1 — Figure 6The system includes a separator 1, with a feed pipe 101 at the top. Inside the separator 1 is a separation chamber 103, inside which is installed a filter cylinder 3. Inside the filter cylinder 3 is a rotating rod 201, with threaded blades 202 fitted onto its outer wall. A filter disc 6 is located at one end of the rotating rod 202, with multiple sets of filter holes 601 inside. A liquid guide hole 602 is connected to the bottom of the filter disc 6. A discharge box 4 is installed on one side of the separator 1, with an extrusion plate 5 inside. This design solves the problem of poor solid-liquid separation effect of screw extrusion solid-liquid separation equipment for feces. The screw blades 202 pour the liquid into the separator 1. The feces are conveyed inside the filter cylinder 3. As the feces are conveyed, most of the liquid in the feces is filtered out by the pressure of the spiral blades 202. When the feces are conveyed to the end of the filter cylinder 3, the liquid squeezed out by the feces near the inner wall of the separation chamber 103 will flow along the inclined inner wall of the separation chamber 103 to the bottom of the separation chamber 103. The liquid squeezed out by the feces near the filter plate 6 will enter the filter plate 6 through the filter hole 601. The liquid collected in the filter plate 6 will flow into the bottom of the separation chamber 103 through the liquid guide hole 602 connected to the bottom of the filter plate 6. By shortening the detachment path of the liquid squeezed out of the feces, the dehydration efficiency of the feces is increased.

[0038] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 A motor 2 is installed at the end of the rotating rod 201. The pitch of the spiral blade 202 gradually decreases. The motor 2 drives the spiral blade 202 to rotate through the rotating rod 201. As the pitch of the spiral blade 202 gradually decreases, the pressure on the feces between the spiral blade 202 and the filter cylinder 3 gradually increases. Under this continuously increasing pressure, the liquid remaining in the feces is further squeezed out through the filter cylinder 3.

[0039] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 A support frame 301 is installed on the outer wall of the filter cartridge 3, and the support frame 301 is fixedly installed on the inner wall of the separation chamber 103. The support frame 301 suspends the filter cartridge 3 at the port on one side of the separation chamber 103.

[0040] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 The outer wall of the filter disc 6 is fixed with a fixing column 603. The center points of the filter disc 6, the separation chamber 103 and the rotating rod 201 are on the same straight line. When the feces are conveyed to one end of the filter cylinder 3 by the spiral blade 202, the feces will be squeezed along the outer wall of the filter disc 6 to one side of the squeezing plate 5, so that the feces can be wrapped on the outer wall of the filter disc 6.

[0041] For details regarding the above embodiments, please refer to [link / reference]. Figure 2The end of the liquid guide hole 602 is inclined and the end of the liquid guide hole 602 is connected to the bottom of the inner wall of the separation chamber 103. The liquid collected in the filter plate 6 will flow into the bottom of the separation chamber 103 through the liquid guide hole 602 connected to the bottom of the filter plate 6. The inclined liquid guide hole 602 can reduce the liquid residue in the liquid guide hole 602.

[0042] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 A spring 501 is installed on one side of the extrusion plate 5, and one end of the spring 501 is fixed to the inner wall of the discharge box 4. The spring 501 will press the extrusion plate 5 against the port of the separation chamber 103 until the extrusion force of the feces at the end of the filter cylinder 3 is greater than the extrusion force of the spring 501 on the extrusion plate 5, so that the feces can be discharged from the port of the separation chamber 103.

[0043] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 Two sets of limiting rods 502 are provided at one end of the extrusion plate 5, and the ends of the limiting rods 502 are located inside the discharge box 4. The limiting rods 502 limit the movement of the extrusion plate 5 to prevent the extrusion plate 5 from tilting due to uneven pressure from the extrusion of feces.

[0044] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 The port of the separation chamber 103 and the bottom of the inner wall of the separation chamber 103 are both inclined. The bottom of the separation chamber 103 is connected to the liquid outlet pipe 102. When the feces at one end of the filter cylinder 3 are squeezed, the squeezed liquid will flow along the inclined inner wall of the separation chamber 103 to the liquid outlet pipe 102 for discharge.

[0045] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 and Figure 6 Two sets of scrapers 7 are installed on both sides of the filter disc 6. The ends of the scrapers 7 are connected to drive rods 701, and one end of the drive rods 701 is connected to the end of the rotating rod 201. The scrapers 7 are set in an isosceles trapezoidal shape. During the rotation of the rotating rod 201, the rotation of the rotating rod 201 will drive the two sets of scrapers 7 to rotate on the outer wall of the filter disc 6 through the drive rod 701, so that the scrapers 7 scrape off the solid feces attached to the filter disc 6, preventing the solid feces attached to the outer wall of the filter disc 6 from clogging the filter holes 601 on the filter disc 6.

[0046] In practical operation, the present invention works as follows: First, mixed feces are fed into the separator 1 through the feed pipe 101. The motor 2 drives the spiral blades 202 to rotate via the rotating rod 201. The spiral blades 202 convey the feces into the filter cylinder 3. During the conveying process inside the filter cylinder 3, as the pitch of the spiral blades 202 gradually decreases, the squeezing force between the spiral blades 202 and the filter cylinder 3 gradually increases. Under this continuously increasing squeezing force, the liquid remaining in the feces is further squeezed out through the filter cylinder 3. When the feces reach the end of the filter cylinder 3, the subsequently conveyed feces will squeeze the feces located at the end of the filter cylinder 3, causing the feces to continue to be squeezed until it reaches the end of the filter cylinder 3. The squeezing force of the feces at the end of the filter cylinder 3 is greater than the squeezing force of the spring 501 on the squeezing plate 5. The squeezing plate 5 is squeezed to one side by the feces, so that the feces can be discharged from the port of the separation chamber 103. When the feces are squeezed at the end of the filter cylinder 3, the liquid squeezed out by the feces near the inner wall of the separation chamber 103 will flow along the inclined inner wall of the separation chamber 103 to the bottom of the separation chamber 103. The liquid squeezed out by the feces near the filter plate 6 will enter the filter plate 6 through the filter hole 601. The liquid collected in the filter plate 6 will flow into the bottom of the separation chamber 103 through the liquid guide hole 602 connected to the bottom of the filter plate 6. Finally, the liquid collected at the bottom of the separation chamber 103 will be discharged from the liquid outlet pipe 102.

[0047] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A screw extrusion type solid-liquid separation device, comprising a separator (1), characterized in that: The separator (1) is provided with a feed pipe (101) at the top. The separator (1) is provided with a separation chamber (103) inside. The separation chamber (103) is provided with a filter cylinder (3) inside. The filter cylinder (3) is provided with a rotating rod (201) inside. The outer wall of the rotating rod (201) is fitted with a spiral blade (202). One end of the rotating rod (201) is provided with a filter disc (6). The filter disc (6) is provided with multiple sets of filter holes (601) inside. The bottom of the filter disc (6) is connected with a liquid guide hole (602). The separator (1) is provided with a discharge box (4) on one side. The discharge box (4) is provided with a squeezing plate (5) inside.

2. The screw extrusion type solid-liquid separation device according to claim 1, characterized in that: A motor (2) is installed at the end of the rotating rod (201), and the pitch of the spiral blade (202) gradually decreases.

3. The screw extrusion type solid-liquid separation device according to claim 1, characterized in that: The outer wall of the filter cartridge (3) is fitted with a support frame (301), and the support frame (301) is fixedly installed on the inner wall of the separation chamber (103).

4. The screw extrusion type solid-liquid separation device according to claim 1, characterized in that: The outer wall of the filter disc (6) is fixed with a fixing column (603), and the center points of the filter disc (6), the separation chamber (103) and the rotating rod (201) are on the same straight line.

5. The screw extrusion type solid-liquid separation device according to claim 1, characterized in that: The end of the liquid guiding hole (602) is inclined, and the end of the liquid guiding hole (602) is connected to the bottom of the inner wall of the separation chamber (103).

6. The screw extrusion type solid-liquid separation device according to claim 1, characterized in that: A spring (501) is installed on one side of the extrusion plate (5), and one end of the spring (501) is fixed to the inner wall of the discharge box (4).

7. The screw extrusion type solid-liquid separation device according to claim 1, characterized in that: Two sets of limiting rods (502) are provided at one end of the extrusion plate (5), and the ends of the limiting rods (502) are located inside the discharge box (4).

8. The screw extrusion type solid-liquid separation device according to claim 1, characterized in that: The separation chamber (103) is inclined at both the port and the bottom of the inner wall of the separation chamber (103), and the bottom of the separation chamber (103) is connected to the liquid outlet pipe (102).

9. A screw extrusion type solid-liquid separation device according to claim 1, characterized in that: Two sets of scrapers (7) are installed on both sides of the filter disc (6). The ends of the scrapers (7) are connected to drive rods (701), and one end of the drive rods (701) is connected to the end of the rotating rods (201).

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