A device and method for treating waste liquid based on soft capsule production

Abstract

The application belongs to the technical field of waste liquid treatment of soft capsule production, and discloses a waste liquid treatment device based on soft capsule production, which comprises a separation assembly, the top end of the separation assembly is provided with a filter throwing assembly, the lower part of the separation assembly is provided with a base, and the separation assembly comprises an outer cylinder. Through the cooperation of the filter throwing assembly and the separation assembly, in combination with the linkage structure of the guide piece and the suspension rod, the filter throwing rod contacts the guide piece to realize rotation and vibration in the revolution process, so that filter hole blockage is avoided, and the filter hole diameter does not need to be reduced. In addition, the micropores with a diameter of 0.1-0.3 mm of the inner cylinder can accurately intercept small particle gelatin floc in the particle size range, and the inner cylinder shakes up and down under the action of the guide piece and the suspension rod, cooperates with the conical structure of the inner cylinder, promotes the small particle gelatin floc to smoothly slide and be recycled, realizes the synchronous achievement of anti-blocking and small particle gelatin recycling, and simultaneously considers the technical contradiction between the recycling of small particle gelatin floc with a particle size of 0.3 mm-0.4 mm and the anti-blocking of the filter hole.

Description

Technical Field

[0001] This invention belongs to the field of waste liquid treatment technology in soft capsule production, specifically a waste liquid treatment device and method based on soft capsule production. Background Technology

[0002] The production of soft capsules generates a large amount of waste liquid with a high gelatin content. Direct discharge of this waste liquid would waste resources and pollute the environment. Therefore, it is necessary to separate and treat the waste liquid to achieve gelatin recovery and ensure that the wastewater meets discharge standards. Existing conventional treatment devices either use a single filtration or centrifugation method. In the treatment of soft capsule production waste liquid, small gelatin flocs with a particle size of 0.3mm-0.4mm are difficult to recover. To prevent filter pore blockage, the filter pore size is increased, causing small gelatin flocs in this size range to be lost with the wastewater and cannot be recovered. Alternatively, the filter pore size is reduced to intercept small gelatin flocs, but this easily causes filter pore blockage, requiring frequent shutdowns for cleaning, which seriously affects the treatment efficiency.

[0003] Existing patent 1: Application number CN200810168592.2 provides a processing waste liquid treatment device. This scheme filters the processing waste liquid transported by the pump. The filter includes: a filter paper formed in a cylindrical shape; a cylinder that covers the outer periphery of the cylindrical filter paper and has multiple openings on the side; a bottom plate that closes the lower end of the cylindrical filter paper; and a top plate that closes the upper end of the cylindrical filter paper and has a waste liquid inlet for introducing the processing waste liquid transported by the pump. The cylindrical filter paper 41 is made of relatively inexpensive filter paper. The mesh of the filter paper can, for example, allow particles with a particle size of 0.3 to 0.4 μm to pass through. Therefore, in the treatment of waste liquid from soft capsule production, filtering small gelatin flocs with a particle size of 0.3 mm to 0.4 mm is slow and time-consuming.

[0004] Existing patent 2, application number CN202111554068.0, provides a waste liquid treatment device. This solution uses sedimentation to allow materials to settle on an L-shaped plate and a filter screen, and then extracts water to clean the impurities on the L-shaped plate and the filter screen. However, when dealing with small gelatin flocs with a particle size of 0.3mm-0.4mm in the waste liquid treatment of soft capsule production, they may be drawn away along with the water during pumping, affecting the recovery of small gelatin flocs with a particle size of 0.3mm-0.4mm.

[0005] Existing patent three, application number CN202110056114.8, provides a waste liquid treatment device for a laboratory. This solution uses a stirring rod to stir the waste liquid and precipitate, so that the waste liquid and precipitate are evenly mixed together, achieving the effect of stirring the waste liquid and precipitate. The precipitate is left on the filter screen. However, in the treatment of waste liquid from soft capsule production, when filtering small gelatin flocs with a particle size of 0.3mm-0.4mm, the small gelatin flocs with a particle size of 0.3mm-0.4mm may clog the mesh of the filter screen, making the waste liquid flow poorly during treatment.

[0006] In summary, existing conventional treatment devices either employ a single filtration method, making it difficult to recover small gelatin flocs (0.3mm-0.4mm in diameter) in soft capsule production wastewater treatment. If the filter pore size is increased to prevent clogging, these small gelatin flocs are easily lost with the wastewater and cannot be recovered. If the filter pore size is reduced to intercept the small gelatin flocs, it easily causes clogging, requiring frequent shutdowns for cleaning, which severely affects treatment efficiency. Conventional methods cannot simultaneously achieve effective recovery of small gelatin flocs (0.3mm-0.4mm in diameter) and prevent filter clogging, presenting a technical contradiction that is difficult to resolve simultaneously.

[0007] Therefore, there is a need for a device and method for treating waste liquid from soft capsule production that can achieve multi-stage efficient separation, avoid clogging, and improve gelatin recovery rate. Summary of the Invention

[0008] The purpose of this invention is to provide a waste liquid treatment device and method based on soft capsule production, so as to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a waste liquid treatment device based on soft capsule production, comprising a separation component, a filtration component at the top of the separation component, a base at the bottom of the separation component, an outer cylinder, an inner cylinder inside the outer cylinder, multiple guide plates equally spaced on the inner wall of the inner cylinder, a connecting plate fixedly connected to the top of the inner cylinder, multiple circumferentially arranged suspension rods fixedly connected to the top of the connecting plate, a discharge pipe fixedly connected to the bottom of the inner cylinder, the bottom end of the discharge pipe penetrating the bottom end of the outer cylinder, multiple equally spaced micropores on the inner cylinder wall, both the upper and lower ends of the inner cylinder being conical and symmetrically arranged, a pair of drain outlets on the bottom of the outer cylinder, the micropore diameter being 0.1-0.3 mm, and the inner cylinder being made of modified polypropylene.

[0010] Furthermore, the spun filter assembly includes a top cover located at the top of the outer cylinder. The top cover and the outer cylinder are detachably connected. A sealing block is fixedly connected to the bottom end of the top cover. The sealing block extends into the interior of the outer cylinder, and the outer wall of the sealing block fits against the inner wall of the outer cylinder. The bottom end of the sealing block is connected to a suspension rod. The sealing block is made of nitrile rubber with a Shore hardness of 50-60 degrees.

[0011] Furthermore, a screw pump is fixedly connected to the top of the top cover, and a bushing is fixedly connected to the transmission end of the screw pump. The bushing is connected to the transmission end of the screw pump. A hollow shaft cylinder is rotatably connected to the bottom end of the bushing. The bushing is connected to the hollow shaft cylinder. The bottom end of the hollow shaft cylinder passes through the top cover and the sealing block and extends into the interior of the inner cylinder. Multiple equidistant filter rods are rotatably connected to the outer wall of the hollow shaft cylinder. The hollow shaft cylinder is made of 304 stainless steel.

[0012] Furthermore, a servo motor is fixedly connected to the top of the top cover. The transmission end of the servo motor passes through the top of the top cover and extends into the interior of the sealing block. A transmission gear is fixedly connected to the transmission end of the servo motor. A driven gear fitted on the upper part of the hollow shaft cylinder is engaged at the left end of the transmission gear. The driven gear is fixedly connected to the hollow shaft cylinder.

[0013] Furthermore, the filter rod is connected to the hollow shaft cylinder, and the outer wall of the filter rod is provided with multiple filter holes arranged in a conical shape. The filter rod is conical in shape, the diameter of the filter holes is 0.2-0.4mm, and the filter rod is made of modified polyvinyl chloride.

[0014] Furthermore, the guide plate includes a slope plate, an elastic sheet is fixedly connected to the outer side of the slope plate, an installation plate is fixedly connected to the end of the elastic sheet away from the slope plate, the installation plate is fixedly connected to the inner wall of the inner cylinder, the slope of the slope plate is 15°-20°, the elastic sheet is made of spring steel, the thickness is 1-1.5mm, and the elastic deformation range is 5-10mm.

[0015] Furthermore, the suspension rod includes a fixed column, which is fixedly installed on the top of the connecting plate. A movable column is slidably connected inside the fixed column. A spring is fixedly connected inside the fixed column and at the bottom of the movable column. The travel of the suspension rod is 8-12mm.

[0016] Furthermore, the spring is a compression spring with an elastic coefficient of 20-30 N / mm and is made of spring steel.

[0017] Furthermore, the slope plate is plate-shaped with a high center and low sides, the elastic sheet is V-shaped, and the slope plate is made of modified polypropylene.

[0018] A method for treating waste liquid from soft capsule production includes the following steps: S1: Pretreatment, which involves flocculating the gelatin-containing waste liquid generated during the production of soft capsules to form flocs from the gelatin in the waste liquid; S2: Feeding, start the screw pump, and transport the flocculated waste liquid through the shaft sleeve to the hollow shaft cylinder, and then distribute it to the hollow bars of each filter rod; S3: First-stage spun filter. The servo motor is started. The servo motor drives the hollow shaft cylinder to rotate through the transmission gear and the driven gear. The hollow shaft cylinder drives the spun filter rod to make a circular motion, generating centrifugal force. Under the action of centrifugal force, the water in the waste liquid is thrown out through the filter holes on the outer wall of the spun filter rod. The gelatin flocs are intercepted inside the spun filter rod. At the same time, the spun filter rod rotates and vibrates in contact with the guide plate, causing the gelatin flocs to move and avoid clogging. S4: Secondary separation. The small gelatin flocs mixed in with the water ejected in S3 collide with the inner wall of the inner cylinder. The water enters the outer cylinder through the micropores of the inner cylinder wall and is then discharged from the drain outlet at the bottom of the outer cylinder. The small gelatin flocs are intercepted inside the inner cylinder. S5: Auxiliary separation. During the rotation of the filter rod, it contacts the slope plate of the guide plate. The slope plate is pressed, causing the elastic plate to deform, which in turn causes the inner cylinder to move up and down inside the outer cylinder. The movable column of the suspension rod moves up and down with the inner cylinder, and the spring deforms, which amplifies the shaking amplitude of the inner cylinder and promotes the small gelatin flocs on the inner wall of the inner cylinder to slide down the conical inner wall and be discharged through the discharge pipe. At the same time, when the filter rod contacts the slope plate, it changes its own angle and rotates under the action of the slope plate, avoiding the clogging of the filter holes. S6: Discharge and cleaning. After the waste liquid is treated, the screw pump is reversed to suck up the gelatin flocs intercepted inside the filter rod. At the same time, small gelatin flocs inside the inner cylinder are collected through the discharge pipe.

[0019] The beneficial effects of this invention are as follows: 1. This invention utilizes the coordinated operation of the spun filter assembly and the separation assembly, combined with the linkage structure of the guide plate and the suspension rod. During its revolution, the spun filter rod contacts the guide plate to achieve rotation and vibration, which avoids filter pore clogging without reducing the filter pore diameter. At the same time, the 0.1-0.3mm micropores of the inner cylinder accurately intercept small gelatin flocs within this particle size range. Simultaneously, the inner cylinder sways up and down under the action of the guide plate and the suspension rod, and with the conical structure of the inner cylinder, it promotes the smooth sliding and recycling of small gelatin flocs. This achieves simultaneous anti-clogging and small gelatin floc recycling, and simultaneously addresses the technical contradiction between recycling small gelatin flocs with a particle size of 0.3mm-0.4mm and preventing filter pore clogging.

[0020] 2. This invention utilizes the centrifugal force generated by the circular motion of the filter rod in the centrifugal filter assembly to quickly separate water and small gelatin flocs with a particle size of 0.3mm-0.4mm. After being thrown onto the inner cylinder, the small gelatin flocs collide with the inner cylinder, causing water to be discharged from the micropores of the inner cylinder. The small gelatin flocs with a particle size of 0.3mm-0.4mm impact the inner wall of the inner cylinder. The inner cylinder, which is conical at both the top and bottom, facilitates the collection of the small gelatin flocs with a particle size of 0.3mm-0.4mm.

[0021] 3. This invention utilizes the spring cooperation between the guide plate and the suspension rod. During the rotation of the filter rod, the guide plate contacts the filter rod, causing the filter rod to rotate and vibrate. This facilitates the repositioning of the gelatin flocs on the inner wall of the filter rod, preventing blockage. Simultaneously, the guide plate, under pressure, causes the inner cylinder to shake up and down, further promoting the sliding of small gelatin flocs with a particle size of 0.3mm-0.4mm from the inner wall of the inner cylinder. This prevents the gelatin flocs from adhering to the inner wall of the inner cylinder, thereby improving gelatin recovery efficiency and reducing subsequent cleaning difficulty. Furthermore, the conical design at both ends of the inner cylinder further guides the gelatin flocs to converge towards the discharge pipe, improving discharge smoothness. Attached Figure Description

[0022] Figure 1 This is a perspective view of the entire invention; Figure 2 This is a cross-sectional view of the entire invention; Figure 3 This is an overall exploded view of the invention; Figure 4 This is a structural diagram of the sifting filter assembly of the present invention; Figure 5 This is a structural diagram of the filter rod of the present invention; Figure 6 This is a structural diagram of the guide plate of the present invention; Figure 7 This is a structural diagram of the suspension rod of the present invention.

[0023] In the diagram: 1. Separation assembly; 2. Filter assembly; 3. Base; 101. Outer cylinder; 102. Inner cylinder; 103. Guide plate; 104. Connecting plate; 105. Suspension rod; 106. Discharge pipe; 201. Top cover; 202. Sealing block; 203. Screw pump; 204. Bushing; 205. Hollow shaft cylinder; 206. Filter rod; 207. Servo motor; 208. Transmission gear; 209. Driven gear; 10301. Slope plate; 10302. Elastic plate; 10303. Mounting plate; 10501. Fixed column; 10502. Movable column; 10503. Spring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figures 1 to 7 As shown, this embodiment of the invention provides a waste liquid treatment device based on soft capsule production, including a separation component 1, a filtration component 2 at the top of the separation component 1, and a base 3 at the bottom of the separation component 1. The separation component 1 includes an outer cylinder 101, an inner cylinder 102 inside the outer cylinder 101, a plurality of guide plates 103 equidistantly arranged on the inner wall of the inner cylinder 102, and a connecting plate 104 fixedly connected to the top of the inner cylinder 102. There are multiple suspension rods 105 arranged in a circle. The bottom end of the inner cylinder 102 is fixedly connected to a discharge pipe 106. The bottom end of the discharge pipe 106 passes through the bottom end of the outer cylinder 101. The inner cylinder 102 has multiple micro-holes arranged at equal intervals on its wall. The upper and lower ends of the inner cylinder 102 are both tapered and symmetrically arranged. The bottom end of the outer cylinder 101 has a pair of drainage outlets. The micro-hole diameter is 0.1-0.3mm. The inner cylinder 102 is made of modified polypropylene.

[0026] In this system, the separation component 1 serves as the core structure for secondary separation. The outer cylinder 101 provides installation and protection space for the inner cylinder 102. The inner cylinder 102 separates water from small gelatin flocs through micropores in its cylinder wall. The micropore diameter is set to 0.1-0.3 mm, effectively intercepting small gelatin flocs, which typically have a particle size greater than 0.3 mm, while ensuring smooth water passage. The tapered design at both ends of the inner cylinder 102 guides the gelatin flocs to converge towards the discharge pipe 106 for easy discharge. The guide plate 103 works in conjunction with the swirl filter component 2 to agitate the inner cylinder 102. The suspension rod... 105 The inner cylinder 102 is suspended below the spun filter assembly 2 to provide support and cushioning for the up-and-down swaying of the inner cylinder 102. The base 3 is used to support the entire device and ensure the stability of the device during operation. The inner cylinder 102 is made of modified polypropylene, which has good corrosion resistance and wear resistance, and is suitable for the treatment environment of gelatin-containing waste liquid. It realizes the secondary separation of waste liquid, intercepts small gelatin flocs, and facilitates gelatin recycling. At the same time, the upper and lower ends of the inner cylinder 102 are both tapered, which facilitates the aggregation of gelatin flocs in one place, and makes it easy for the discharge pipe 106 to discharge small gelatin flocs, making the gelatin recycling more thorough.

[0027] The filter assembly 2 includes a top cover 201, which is located at the top of the outer cylinder 101. The top cover 201 and the outer cylinder 101 are detachably connected. A sealing block 202 is fixedly connected to the bottom end of the top cover 201. The sealing block 202 extends into the interior of the outer cylinder 101, and the outer wall of the sealing block 202 fits against the inner wall of the outer cylinder 101. The bottom end of the sealing block 202 is connected to the suspension rod 105. The sealing block 202 is made of nitrile rubber with a Shore hardness of 50-60 degrees.

[0028] The top cover 201 serves as the mounting carrier for the spun filter assembly 2. Its detachable connection design facilitates subsequent maintenance and cleaning of the device. The sealing block 202 fills the gap between the top cover 201 and the outer cylinder 101 to prevent waste liquid from leaking from the top during treatment. The nitrile rubber material has good sealing and oil resistance, making it suitable for waste liquid treatment environments. The Shore hardness setting of 50-60 degrees ensures the sealing effect. The sealing block 202 is connected to the suspension rod 105 to provide a suspension support point for the inner cylinder 102.

[0029] The top of the top cover 201 is fixedly connected to a screw pump 203, and the transmission end of the screw pump 203 is fixedly connected to a bushing 204. The bushing 204 is connected to the transmission end of the screw pump 203. The bottom end of the bushing 204 is rotatably connected to a hollow shaft cylinder 205. The bushing 204 is connected to the hollow shaft cylinder 205. The bottom end of the hollow shaft cylinder 205 passes through the top cover 201 and the sealing block 202 and extends into the interior of the inner cylinder 102. The outer wall of the hollow shaft cylinder 205 is rotatably connected to multiple filter rods 206 arranged at equal intervals. The hollow shaft cylinder 205 is made of 304 stainless steel.

[0030] The screw pump 203 is used to stably transport the pretreated gelatin-containing waste liquid to the bushing 204. The bushing 204 connects the screw pump 203 to the hollow shaft cylinder 205, while allowing the hollow shaft cylinder 205 to rotate freely. The hollow shaft cylinder 205 distributes the waste liquid to each filter rod 206 and drives the filter rod 206 to make a circular motion to achieve primary filtration. The 304 stainless steel material has good corrosion resistance and strength, can withstand centrifugal force, extends the service life of the hollow shaft cylinder 205, achieves stable transportation and uniform distribution of waste liquid, and ensures the smooth operation of primary filtration. The material selection improves the durability and stability of the device.

[0031] The top of the top cover 201 is fixedly connected to a servo motor 207. The transmission end of the servo motor 207 passes through the top of the top cover 201 and extends into the interior of the sealing block 202. The transmission end of the servo motor 207 is fixedly connected to a transmission gear 208. The left end of the transmission gear 208 meshes with a driven gear 209 fitted on the upper part of the hollow shaft cylinder 205. The driven gear 209 is fixedly connected to the hollow shaft cylinder 205.

[0032] The servo motor 207 serves as the power source. After starting, it drives the transmission gear 208 to rotate. The transmission gear 208 drives the driven gear 209 to rotate through meshing, which in turn drives the hollow shaft cylinder 205 to rotate synchronously, and finally drives the filter rod 206 to make a circular motion, generating centrifugal force.

[0033] The filter rod 206 is connected to the hollow shaft cylinder 205. The outer wall of the filter rod 206 has multiple filter holes arranged in a conical shape. The filter rod 206 is conical in shape, and the diameter of the filter holes is 0.2-0.4mm. The filter rod 206 is made of modified polyvinyl chloride.

[0034] The centrifugal filter rod 206 is used to contain waste liquid. Under centrifugal force, the water in the waste liquid is thrown out through the filter holes on the outer wall, while the gelatin flocs are intercepted inside. When the centrifugal filter rod 206 contacts the guide plate 103 and rotates along the slope of the guide plate 103, the centrifugal filter rod 206 vibrates upon contact with the guide plate 103, thereby displacing the gelatin flocs and preventing them from accumulating and clogging at the filter holes. This effectively changes the position of the gelatin flocs without affecting the flow of waste liquid and the centrifugal filtration effect. The filter hole diameter of 0.2-0.4mm can effectively intercept the gelatin flocs. The gelatin floc particle size is greater than 0.4mm, ensuring the first-stage centrifugal filtration effect. The modified polyvinyl chloride material has good corrosion resistance and toughness, and is lightweight, which can reduce the load under centrifugal force and extend the service life of the hollow rod 20601.

[0035] The guide plate 103 includes a slope plate 10301. An elastic plate 10302 is fixedly connected to the outer side of the slope plate 10301. An installation plate 10303 is fixedly connected to the end of the elastic plate 10302 away from the slope plate 10301. The installation plate 10303 is fixedly connected to the inner wall of the inner cylinder 102. The slope of the slope plate 10301 is 15°-20°. The elastic plate 10302 is made of spring steel with a thickness of 1-1.5mm and an elastic deformation range of 5-10mm.

[0036] The mounting plate 10303 is used to fix the guide plate 103 to the inner wall of the inner cylinder 102. The slope plate 10301 is used to contact the filter rod 206. When the filter rod 206 rotates and hits the slope plate 10301, the slope plate 10301 is pressed and causes the elastic plate 10302 to undergo elastic deformation, which in turn causes the inner cylinder 102 to move up and down. The slope of the slope plate 10301 is 15°-20°, which allows the filter rod 206 to change angle when in contact, thus achieving rotation. The elastic plate 10302, made of spring steel, has good elasticity and toughness. The setting of 1-1.5mm thickness and elastic deformation range of 5-10mm can ensure sufficient deformation amplitude to drive the inner cylinder 102 to shake, while avoiding excessive deformation that could cause damage. This achieves the up and down shaking of the inner cylinder 102 and the rotation of the filter rod 206, preventing blockage, promoting the shedding of gelatin flocs, and ensuring separation and recycling efficiency.

[0037] The suspension rod 105 includes a fixed column 10501, which is fixedly installed on the top of the connecting plate 104. A movable column 10502 is slidably connected inside the fixed column 10501. A spring 10503 is fixedly connected inside the fixed column 10501 and at the bottom of the movable column 10502. The travel of the suspension rod 105 is 8-12mm. This travel allows the inner cylinder 102 to swing up and down by 3-5mm, which can ensure that water is quickly extracted and avoid damage to the device due to excessive swing. The spring 10503 is a compression spring with an elastic coefficient of 20-30N / mm and is made of spring steel.

[0038] The fixed column 10501 is fixed to the connecting plate 104, and the movable column 10502 is connected to the sealing block 202. When the inner cylinder 102 is subjected to the force of the guide plate 103, the movable column 10502 slides up and down inside the fixed column 10501, and the spring 10503 undergoes compression or stretching deformation, which plays a role in buffering and resetting. The setting of the movable stroke of 8-12mm controls the shaking amplitude of the inner cylinder 102 to 3-5mm, which not only ensures the shaking effect to promote the shedding of gelatin flocs, but also avoids excessive shaking amplitude from damaging the device. The elastic coefficient of the compression spring is 20-30N / mm, which can provide appropriate buffering force. The spring steel material ensures the service life and elastic stability of the spring 10503, provides buffering and support for the shaking of the inner cylinder 102, controls the shaking amplitude, ensures the stability of the device operation, and extends the service life of the device.

[0039] Among them, the slope plate 10301 is plate-shaped with a high center and low sides, the elastic sheet 10302 is V-shaped, and the slope plate 10301 is made of modified polypropylene.

[0040] The slope plate 10301, with its high center and low sides, ensures that the filter rod 206 rotates when it comes into contact with the filter from both sides due to the slope. The V-shaped elastic sheet 10302 has better elastic deformation capability and can deform evenly under force, causing the inner cylinder 102 to sway smoothly and avoiding excessive local stress. The modified polypropylene material has good wear resistance and corrosion resistance, making it suitable for waste liquid treatment environments. At the same time, its light weight reduces the overall load on the inner cylinder 102, ensuring the stability of the filter rod 206's rotation, making the inner cylinder 102 sway smoothly, improving the operational stability of the device, and extending the service life of the guide plate 103.

[0041] A method for treating waste liquid from soft capsule production includes the following steps: S1: Pretreatment, which involves flocculating the gelatin-containing waste liquid generated during the production of soft capsules to form flocs from the gelatin in the waste liquid; S2: Feeding, start the screw pump 203, and transport the flocculated waste liquid through the bushing 204 to the hollow shaft cylinder 205, and then distribute it from the hollow shaft cylinder 205 to the hollow rod 20601 of each filter rod 206; S3: First-stage spun filter. The servo motor 207 is started. The servo motor 207 drives the hollow shaft cylinder 205 to rotate through the transmission gear 208 and the driven gear 209. The hollow shaft cylinder 205 drives the spun filter rod 206 to make a circular motion, generating centrifugal force. Under the action of centrifugal force, the water in the waste liquid is thrown out through the filter holes on the outer wall of the spun filter rod 206. The gelatin flocs are intercepted inside the spun filter rod 206. At the same time, the spun filter rod 206 contacts the guide plate 103 and rotates and vibrates, causing the gelatin flocs to displace and avoid clogging. S4: Secondary separation. The small gelatin flocs mixed in the water ejected in S3 collide with the inner wall of the inner cylinder 102. The water enters the outer cylinder 101 through the micropores of the inner cylinder 102 wall and is discharged from the drain at the bottom of the outer cylinder 101. The small gelatin flocs are intercepted inside the inner cylinder 102. S5: Auxiliary separation. During the rotation of the filter rod 206, it contacts the slope plate 10301 of the guide plate 103. The slope plate 10301 is pressed, causing the elastic plate 10302 to deform, which in turn causes the inner cylinder 102 to move up and down inside the outer cylinder 101. The movable column 10502 of the suspension rod 105 moves up and down with the inner cylinder 102. The spring 10503 deforms, which increases the swaying amplitude of the inner cylinder 102 and promotes the small gelatin flocs on the inner wall of the inner cylinder 102 to slide down the conical inner wall and be discharged through the discharge pipe 106. At the same time, when the filter rod 206 contacts the slope plate 10301, it changes its own angle and rotates under the action of the slope of the slope plate 10301 to avoid clogging of the filter holes. S6: Discharge and cleaning. After the waste liquid is treated, the screw pump 203 is reversed. The screw pump 203 sucks up the gelatin flocs intercepted inside the filter rod 206, and at the same time collects the small gelatin flocs inside the inner cylinder 102 through the discharge pipe 106.

[0042] Working principle and usage process: The overall working principle of this invention is as follows: through a process from pretreatment to primary filtration to secondary separation to auxiliary separation to discharge and cleaning, it achieves efficient separation of gelatin and water in soft capsule production wastewater, thus achieving the goals of gelatin recovery and wastewater discharge meeting standards. First, the gelatin-containing wastewater undergoes flocculation pretreatment, causing the gelatin to form easily separable flocs. Then, a screw pump 203 transports the flocculated wastewater to a hollow shaft cylinder 205 and distributes it to each filter rod 206. A servo motor 207 drives the hollow shaft cylinder 205 and filter rods 206 to rotate via gear transmission, generating centrifugal force to achieve primary filtration. Water is ejected through the filter holes of the filter rods 206, while the gelatin flocs are intercepted and directed towards the end by the spiral blades 20603. As the filter moves, the water carried by the spun-out gelatin flocs impacts the inner wall of the inner cylinder 102. The water enters the outer cylinder 101 through the micropores of the inner cylinder 102 and is discharged. The small gelatin flocs are intercepted in the inner cylinder 102, achieving secondary separation. During the rotation of the spun-out filter rod 206, it contacts the slope plate 10301 of the guide plate 103, causing the elastic plate 10302 to deform. This causes the inner cylinder 102 to sway up and down under the support of the suspension rod 105, further aggravating the sliding of the gelatin flocs. At the same time, the spun-out filter rod 206 rotates under the action of the slope, preventing the filter holes from clogging. After the treatment is completed, the screw pump 203 reverses to recover the gelatin flocs in the spun-out filter rod 206. At the same time, the small gelatin flocs from the discharge pipe 106 are collected, completing the entire treatment process.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste liquid treatment device based on soft capsule production, characterized in that: It includes a separation component (1), a spun filter component (2) is provided at the top of the separation component (1), and a base (3) is provided at the bottom of the separation component (1). The separation assembly (1) includes an outer cylinder (101), inside which is an inner cylinder (102). Multiple guide plates (103) are installed on the inner wall of the inner cylinder (102) at equal intervals. A connecting plate (104) is fixedly connected to the top of the inner cylinder (102), and multiple suspension rods (105) arranged in a circular pattern are fixedly connected to the top of the connecting plate (104). A discharge device is fixedly connected to the bottom of the inner cylinder (102). The bottom end of the discharge pipe (106) penetrates the bottom end of the outer cylinder (101). The inner cylinder (102) has multiple micro-holes arranged at equal intervals on its wall. The upper and lower ends of the inner cylinder (102) are both tapered and symmetrically arranged. The bottom end of the outer cylinder (101) has a pair of drainage outlets. The diameter of the micro-holes is 0.1-0.3 mm. The inner cylinder (102) is made of modified polypropylene.

2. The waste liquid treatment device based on soft capsule production according to claim 1, characterized in that: The filter assembly (2) includes a top cover (201), which is located at the top of the outer cylinder (101). The top cover (201) and the outer cylinder (101) are detachably connected. A sealing block (202) is fixedly connected to the bottom end of the top cover (201). The sealing block (202) extends into the interior of the outer cylinder (101), and the outer wall of the sealing block (202) is in contact with the inner wall of the outer cylinder (101). The bottom end of the sealing block (202) is connected to the suspension rod (105). The sealing block (202) is made of nitrile rubber with a Shore hardness of 50-60 degrees.

3. The waste liquid treatment device and method based on soft capsule production according to claim 2, characterized in that: A screw pump (203) is fixedly connected to the top of the top cover (201). A bushing (204) is fixedly connected to the transmission end of the screw pump (203). The bushing (204) is connected to the transmission end of the screw pump (203). A hollow shaft cylinder (205) is rotatably connected to the bottom end of the bushing (204). The bushing (204) is connected to the hollow shaft cylinder (205). The bottom end of the hollow shaft cylinder (205) passes through the top cover (201) and the sealing block (202) and extends into the interior of the inner cylinder (102). A plurality of filter rods (206) are rotatably connected to the outer wall of the hollow shaft cylinder (205) and are arranged at equal intervals. The hollow shaft cylinder (205) is made of 304 stainless steel.

4. The waste liquid treatment device based on soft capsule production according to claim 3, characterized in that: A servo motor (207) is fixedly connected to the top of the top cover (201). The transmission end of the servo motor (207) passes through the top of the top cover (201) and extends into the interior of the sealing block (202). A transmission gear (208) is fixedly connected to the transmission end of the servo motor (207). A driven gear (209) is meshed on the left end of the transmission gear (208) and is fitted on the upper part of the hollow shaft cylinder (205). The driven gear (209) is fixedly connected to the hollow shaft cylinder (205).

5. The waste liquid treatment device based on soft capsule production according to claim 3, characterized in that: The filter rod (206) is connected to the hollow shaft cylinder (205). The outer wall of the filter rod (206) is provided with a plurality of filter holes arranged in a conical shape. The filter rod (206) is conical in shape. The diameter of the filter holes is 0.2-0.4 mm. The filter rod (206) is made of modified polyvinyl chloride.

6. The waste liquid treatment device based on soft capsule production according to claim 1, characterized in that: The guide plate (103) includes a slope plate (10301), an elastic plate (10302) is fixedly connected to the outer side of the slope plate (10301), and an installation plate (10303) is fixedly connected to the end of the elastic plate (10302) away from the slope plate (10301). The installation plate (10303) is fixedly connected to the inner wall of the inner cylinder (102). The slope of the slope plate (10301) is 15°-20°. The elastic plate (10302) is made of spring steel with a thickness of 1-1.5mm and an elastic deformation range of 5-10mm.

7. The waste liquid treatment device based on soft capsule production according to claim 1, characterized in that: The suspension rod (105) includes a fixed column (10501), which is fixedly installed on the top of the connecting plate (104). A movable column (10502) is slidably connected inside the fixed column (10501). A spring (10503) is fixedly connected inside the fixed column (10501) and at the bottom of the movable column (10502). The travel of the suspension rod (105) is 8-12mm.

8. A waste liquid treatment device based on soft capsule production according to claim 7, characterized in that: The spring (10503) is a compression spring with an elastic coefficient of 20-30 N / mm and is made of spring steel.

9. A waste liquid treatment device based on soft capsule production according to claim 6, characterized in that: The slope plate (10301) is plate-shaped with a high center and low sides, the elastic sheet (10302) is V-shaped, and the slope plate (10301) is made of modified polypropylene.

10. A method for treating waste liquid from soft capsule production, characterized in that: Includes the following steps: S1: Pretreatment, which involves flocculating the gelatin-containing waste liquid generated during the production of soft capsules to form flocs from the gelatin in the waste liquid; S2: Feeding, start the screw pump (203) to transport the flocculated waste liquid through the bushing (204) to the hollow shaft cylinder (205), and then the hollow shaft cylinder (205) distributes it to the hollow rod (20601) of each filter rod (206); S3: First-stage spun filter, start the servo motor (207), the servo motor (207) drives the hollow shaft cylinder (205) to rotate through the transmission gear (208) and the driven gear (209), the hollow shaft cylinder (205) drives the spun filter rod (206) to make a circular motion, generating centrifugal force. Under the action of centrifugal force, the water in the waste liquid is thrown out through the filter holes on the outer wall of the spun filter rod (206), and the gelatin flocs are intercepted inside the spun filter rod (206). At the same time, the spun filter rod (206) contacts the guide plate (103) and rotates and vibrates, causing the gelatin flocs to shift and avoid clogging; S4: Secondary separation. The small gelatin flocs mixed in the water ejected in S3 collide with the inner wall of the inner cylinder (102). The water enters the outer cylinder (101) through the micropores of the inner cylinder (102) wall and is discharged from the drain outlet at the bottom of the outer cylinder (101). The small gelatin flocs are intercepted inside the inner cylinder (102). S5: Auxiliary separation. During the rotation of the filter rod (206), it comes into contact with the slope plate (10301) of the guide plate (103). The slope plate (10301) is pressed and causes the elastic plate (10302) to deform, which in turn causes the inner cylinder (102) to move up and down inside the outer cylinder (101). The movable column (10502) of the suspension rod (105) moves up and down with the inner cylinder (102). The spring (10503) deforms, which intensifies the shaking amplitude of the inner cylinder (102) and promotes the small gelatin flocs on the inner wall of the inner cylinder (102) to slide down the conical inner wall and be discharged into the discharge pipe (106). At the same time, when the filter rod (206) comes into contact with the slope plate (10301), it changes its own angle and rotates under the action of the slope plate (10301) to avoid clogging of the filter holes. S6: Discharge and cleaning. After the waste liquid is treated, the screw pump (203) is reversed. The screw pump (203) sucks up the gelatin flocs intercepted inside the filter rod (206) and collects the small gelatin flocs inside the inner cylinder (102) through the discharge pipe (106).

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