An integrated recovery system for glycerin waste liquid

Abstract

The invention relates to the technical field of wastewater treatment, and discloses an integrated glycerin waste liquid recovery system, comprising a decolorizing tank for containing activated carbon, an activated carbon conveying device arranged at the bottom of the decolorizing tank, a liquid inlet slit opened on the outside of the decolorizing tank, a liquid outlet pipe fixedly arranged on the outside of the decolorizing tank, and the liquid outlet pipe and the liquid inlet slit arranged in an up-and-down distribution; a sealing member for sealing the bottom of the decolorizing tank to support the activated carbon. The integrated glycerin waste liquid recovery system can effectively solve the problem in the prior art that when the activated carbon is discharged from the inside of the decolorizing tank, it will be discharged together with the residual waste liquid that has not been discharged from the inside of the decolorizing tank, and the glycerin waste liquid when the activated carbon is discharged needs to be recovered separately again, and because the small activated carbon particles will flow out with the glycerin waste liquid, the small activated carbon particles need to be filtered and processed later, resulting in the problem that it is not convenient to recover the activated carbon particles in an integrated manner during the treatment of the glycerin waste liquid.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to an integrated glycerin waste liquid recovery system. Background Art

[0002] Glycerin waste liquid is a common waste. Improper treatment will harm the environment and human health, so it is very important to handle it correctly. In various production fields, the glycerin waste liquid usually contains solid waste, organic salts and pigments. When recycling the waste liquid, it can be removed by adsorption filtration, ion exchange and activated carbon decolorization, which can ensure that the recovery rate of glycerin reaches more than 80%.

[0003] In the traditional decolorization of glycerin waste liquid, a certain amount of activated carbon is added to the decolorization tank, and then the waste liquid is input into the decolorization tank from bottom to top. The pores on the surface of the activated carbon particles will adsorb the pigment in the glycerin, thereby achieving the purpose of decolorizing the glycerin using the activated carbon. Since the decolorization ability of the activated carbon will gradually decrease during the decolorization process, the activated carbon needs to be replaced after treating a certain amount of glycerin waste liquid. When the activated carbon is discharged from the decolorization tank, it will be discharged together with the residual waste liquid that has not been discharged from the decolorization tank. The glycerin waste liquid when the activated carbon is discharged needs to be separately recovered again. In addition, since the small activated carbon particles will flow out with the glycerin waste liquid, the small activated carbon particles need to be filtered later, which makes it inconvenient to recover the activated carbon particles as a whole during the treatment of the glycerin waste liquid. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an integrated glycerin waste liquid recovery system, which can effectively solve the problem in the prior art that when the activated carbon is discharged from the inside of the decolorization tank, it will be discharged together with the residual waste liquid that has not been discharged from the inside of the decolorization tank, and the glycerin waste liquid when the activated carbon is discharged needs to be separately recovered again, and because the small activated carbon particles will flow out with the glycerin waste liquid, the small activated carbon particles will need to be filtered and treated later, resulting in the problem that it is not convenient to recover the activated carbon particles in an integrated manner during the treatment process of the glycerin waste liquid.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides an integrated glycerin waste liquid recovery system, comprising:

[0009] A decolorizing tank for containing activated carbon, wherein an activated carbon conveying device is arranged at the bottom of the decolorizing tank, a liquid inlet gap is opened on the outside of the decolorizing tank, a liquid outlet pipe is fixedly arranged on the outside of the decolorizing tank, and the liquid outlet pipe and the liquid inlet gap are arranged in an upper and lower distribution;

[0010] A sealing member, used for sealing the bottom of the decolorizing tank to support the activated carbon, wherein the sealing member is slidably arranged at the bottom of the decolorizing tank;

[0011] A filter assembly, used for filtering activated carbon particles in the glycerol waste liquid, wherein the filter assembly is arranged inside the decolorization tank;

[0012] Wherein, the sealing member comprises a piston column slidably arranged inside the decolorizing tank, the piston column is driven by external force to slide to release the seal on the bottom of the decolorizing tank, the top of the piston column is an inclined surface, and the downwardly inclined side of the inclined surface faces the liquid inlet gap.

[0013] Furthermore, it also includes a de-impurity device for removing solid waste, an ion exchanger for removing organic salts, and a dehydration device for vacuum dehydration. The output end of the de-impurity device is correspondingly connected to the input end of the ion exchanger, the output end of the ion exchanger is correspondingly connected to the input end of the decolorization tank, and the input end of the dehydration device is correspondingly connected to the liquid outlet pipe.

[0014] Furthermore, a sleeve plate is fixedly provided on the outer side of the decolorizing tank, a liquid inlet pipe is fixedly provided on the outer side of the sleeve plate, and the liquid inlet pipe is located on a side of the sleeve plate away from the liquid inlet gap.

[0015] Furthermore, a feed pipe is fixedly arranged on the outside of the decolorizing tank for adding activated carbon;

[0016] The filter assembly comprises a limiting plate, the limiting plate is slidably connected to the decolorizing tank through an outer sealing ring, a liquid outlet gap is opened on the inner side of the limiting plate, and a filter membrane is arranged on the top of the limiting plate;

[0017] The liquid outlet gap is used to block large particles of activated carbon, the filter membrane is used to filter and collect small particles of activated carbon, and the limiting plate seals the feed pipe during the decolorization process.

[0018] Furthermore, it also includes a lifting component for driving the limit plate to lift and slide; the lifting component includes a screw rod, which is arranged on the top of the decolorization tank and drives the limit plate to slide along the axial feed when driven by external force.

[0019] Furthermore, it also includes a liquid spray component, the liquid spray component includes a liquid infusion tube, the liquid infusion tube is coaxially arranged with the decolorization tank, one end of the liquid infusion tube extends to the inside of the filter membrane, the liquid infusion tube is located inside the filter membrane and is provided with a nozzle, and the liquid infusion tube is driven by an external force to drive the nozzle to rotate;

[0020] The infusion tube is used to extract the filtered glycerin waste liquid clear liquid during the decolorization process, and spray it toward the inner side of the filter membrane through a rotating nozzle. The infusion tube is driven by a screw rod to slide.

[0021] Furthermore, the nozzle includes a turntable fixed at the bottom of the infusion tube and a nozzle arranged at the bottom of the turntable, a slide groove is opened at the bottom of the turntable, and the nozzle is rotatably arranged inside the slide groove; wherein, the nozzle swings under the action of centrifugal force.

[0022] Further, a rotating member is rotatably arranged inside the rotating disk, a slider is slidably arranged inside the sliding groove, a nozzle is rotatably arranged on a side of the slider away from the rotating member, a gear is fixedly arranged on the rotating end of the nozzle, a tooth plate is arranged on the top of the gear, and the tooth plate is fixedly arranged on the inner side of the rotating disk;

[0023] The rotating member is acted upon by centrifugal force to push the slider to slide, and the slider is automatically reset under the action of elastic force.

[0024] Furthermore, the liquid outlet gap is arc-shaped, the top and bottom of the cross section of the liquid outlet gap are two V-shaped openings that are open away from each other, and an inverted V-shaped ring is formed between two adjacent V-shaped openings at the top of the liquid outlet gap.

[0025] Furthermore, it also includes a liquid spray gun, which includes a gun body slidably arranged on the side wall of the decolorizing tank, used for cleaning the top of the seal and for supplying liquid to the liquid spray assembly, and one end of the gun body is provided with a ball head;

[0026] Wherein, a sealing sleeve is fixedly arranged on the outside of the sealing member, which is used to squeeze the ball head for storage and seal the side wall of the decolorizing tank.

[0027] Beneficial Effects

[0028] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0029] The present invention is provided with a sealing member to seal the bottom of the decolorizing tank, so as to support the activated carbon inside the decolorizing tank. When the activated carbon is replaced and discharged, the piston column in the sealing member is moved out of the bottom of the decolorizing tank to release the seal, so that the activated carbon is directly discharged to the activated carbon conveying equipment below, so as to facilitate the recovery and treatment of the large-particle activated carbon; and when the remaining waste liquid on the inner side of the filter membrane flows downward, the small-particle activated carbon can move downward along the liquid outlet gap, and finally be discharged together with the large-particle activated carbon, so as to achieve the filtering and recovery of the small-particle activated carbon, and there is no need to separately convey the glycerin waste liquid containing the small-particle activated carbon to the filtering process for treatment, so as to achieve the effect of integrated recovery of the large and small-particle activated carbon in the glycerin waste liquid treatment process; and in order to prevent the remaining waste liquid from being discharged together with the activated carbon, before the sealing member is released, the remaining waste liquid in the decolorizing tank flows out through the liquid inlet gap under the action of the inclined surface on the top of the piston column, so as to prevent the glycerin waste liquid from leaking when the activated carbon is replaced, and there is no need to separate again after the activated carbon is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of the overall connection structure of an embodiment of the present invention;

[0032] Figure 2 This is a three-dimensional structural schematic diagram of a decolorizing tank according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic structural diagram of a decolorizing tank according to an embodiment of the present invention from the front view;

[0034] Figure 4 This is a schematic diagram of the structure inside the decolorizing tank according to an embodiment of the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the filter assembly according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic structural diagram of an explosion of a filter assembly according to an embodiment of the present invention;

[0037] Figure 7 It is a schematic structural diagram of a cross-section of a limit plate according to an embodiment of the present invention;

[0038] Figure 8 This is a schematic structural diagram of a liquid spray assembly according to an embodiment of the present invention;

[0039] Fig. 9 It is a structural schematic diagram of a nozzle according to an embodiment of the present invention;

[0040] Fig.10 This is a schematic diagram of the structure of a nozzle according to an embodiment of the present invention;

[0041] Fig.11 for Fig. 9 A schematic diagram of the enlarged structure at A in the middle;

[0042] Fig.12 It is a schematic structural diagram of a liquid spray gun according to an embodiment of the present invention.

[0043] The numbers in the figure represent:

[0044] 1. Decolorization tank; 11. Liquid inlet gap; 12. Liquid outlet pipe; 13. Feed pipe; 14. Sleeve plate; 15. Liquid inlet pipe; 16. Base; 17. Support plate; 18. Enclosure;

[0045] 2. Sealing element; 21. Sealing sleeve; 22. Limiting rod; 23. Hydraulic push rod;

[0046] 3. Impurity removal equipment; 4. Ion exchanger; 5. Dehydration equipment;

[0047] 6. Filter assembly; 61. Limiting plate; 62. Fixed frame; 63. Top plate; 64. Filter membrane; 65. Liquid outlet gap; 651. Inverted V-shaped ring; 66. Slide rail;

[0048] 7. Lifting assembly; 71. Screw rod; 72. Motor A;

[0049] 8. Liquid spraying assembly; 81. Liquid pump; 82. Liquid suction elbow; 83. Sealing sleeve; 84. Motor seat; 85. Liquid infusion tube; 851. Side hole; 852. Sealing slip ring; 853. Connecting hose; 86. Motor B; 87. Spray head; 871. Turntable; 872. Nozzle; 873. Slide; 874. Rotating part; 875. Sliding block; 876. Ball; 877. Gear; 878. Tooth plate; 879. Spring A;

[0050] 9. Spray gun; 91. Gun body; 92. Ball head; 93. Limiting piece; 94. Spring B; 95. Connector. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] The present invention will be further described below in conjunction with the embodiments.

[0053] Example:

[0054] See also Figure 1-Figure 12 The present invention provides a technical solution: an integrated glycerin waste liquid recovery system, comprising:

[0055] The decolorizing tank 1 is used to contain activated carbon. An activated carbon conveying device is provided at the bottom of the decolorizing tank 1. A liquid inlet slit 11 is provided on the outside of the decolorizing tank 1. A liquid outlet pipe 12 is fixedly provided on the outside of the decolorizing tank 1. The liquid outlet pipe 12 and the liquid inlet slit 11 are arranged in an upper and lower distribution.

[0056] A sealing member 2, used for sealing the bottom of the decolorizing tank 1 to support the activated carbon, and the sealing member 2 is slidably arranged at the bottom of the decolorizing tank 1;

[0057] A filter assembly 6, used for filtering activated carbon particles in the glycerin waste liquid, and the filter assembly 6 is arranged inside the decolorization tank 1;

[0058] The sealing member 2 includes a piston column slidably disposed inside the decolorizing tank 1. The piston column is driven by an external force to slide to release the seal on the bottom of the decolorizing tank 1. The top of the piston column is an inclined surface, and the side of the inclined surface that is inclined downward faces the liquid inlet gap 11. Specifically, a limit rod 22 and a hydraulic push rod 23 are fixedly disposed at the bottom of the piston column. The limit rod 22 is slidably disposed inside the support plate 17. The hydraulic push rod 23 is fixedly installed inside the support plate 17. The support plate 17 is fixedly disposed inside the base 16. The base 16 is fixedly disposed at the bottom of the decolorizing tank 1.

[0059] It also includes a de-impurity device 3 for removing solid waste, an ion exchanger 4 for removing organic salts, and a dehydration device 5 for vacuum dehydration. The output end of the de-impurity device 3 is correspondingly connected to the input end of the ion exchanger 4, the output end of the ion exchanger 4 is correspondingly connected to the input end of the decolorization tank 1, and the input end of the dehydration device 5 is correspondingly connected to the liquid outlet pipe 12.

[0060] A sleeve plate 14 is fixedly provided on the outside of the decolorization tank 1 , and a liquid inlet pipe 15 is fixedly provided on the outside of the sleeve plate 14 . The liquid inlet pipe 15 is located on the side of the sleeve plate 14 away from the liquid inlet gap 11 to prevent the glycerin waste liquid input by the liquid inlet pipe 15 from impacting the activated carbon inside the decolorization tank 1 .

[0061] A feed pipe 13 is fixedly arranged on the outside of the decolorization tank 1 for adding activated carbon; the filter assembly 6 includes a limit plate 61, which is slidably connected to the decolorization tank 1 through an outer sealing ring, and a liquid outlet gap 65 is opened on the inner side of the limit plate 61, and a filter membrane 64 is arranged on the top of the limit plate 61; wherein, the liquid outlet gap 65 is used to block large particles of activated carbon, and the filter membrane 64 is used to filter and collect small particles of activated carbon, and the limit plate 61 seals the feed pipe 13 during the decolorization process.

[0062] It also includes a lifting assembly 7, which is used to drive the limit plate 61 to lift and slide; the lifting assembly 7 includes a screw 71, which is arranged on the top of the decolorizing tank 1, and drives the limit plate 61 to slide along the axial feeding when driven by an external force. Specifically, a motor A72 is fixedly arranged on the top of the decolorizing tank 1, and a sliding sleeve (not marked in the figure) is linked to the driving end of the motor A72. The sliding sleeve is rotatably installed on the top of the decolorizing tank 1, and is used to drive the screw 71 to feed along the axial direction. Since the motor A72 drives the screw 71 to realize the feeding movement, which belongs to the prior art, it will not be repeated here.

[0063] It also includes a spray component 8, which includes an infusion tube 85. The infusion tube 85 is coaxially arranged with the decolorization tank 1, and one end of the infusion tube 85 extends to the inside of the filter membrane 64. The infusion tube 85 is located at one end of the filter membrane 64 and is provided with a nozzle 87. The infusion tube 85 is driven by an external force to drive the nozzle 87 to rotate; wherein, the infusion tube 85 is used to extract the filtered glycerin waste liquid clear liquid during the decolorization process, and is sprayed toward the inner side of the filter membrane 64 through the rotating nozzle 87, and the infusion tube 85 is driven by the screw 71 to slide. Specifically, a motor B86 is provided on the top of the infusion tube 85, and the motor B86 is fixedly provided on the inner side of the motor seat 84. A screw rod 71 is fixedly provided on the top of the motor seat 84, so that the infusion tube 85 is driven by the screw rod 71 to move up and down. A sealing sleeve 83 is fixedly provided on the bottom of the motor seat 84, and the sealing sleeve 83 is fixedly provided on the output end of the liquid pump 81. The liquid pump 81 is slidably installed on the top of the top plate 63 along the slide rail 66. A fixed frame 62 for supporting the filter membrane 64 is fixedly provided on the bottom of the top plate 63, so that the bottom end of the infusion tube 85 passes through the top plate 63 and moves inside the filter membrane 64.

[0064] It is worth noting that a side hole 851 is opened on the outside of the infusion tube 85, and a sealing slip ring 852 is fixedly arranged on the outside of the infusion tube 85. The sealing slip ring 852 is rotatably arranged on the inside of the sealing sleeve 83, and a suction bend 82 is fixedly arranged at the input end of the liquid suction pump 81 for sucking the glycerin waste liquid after filtering on the outside of the filter membrane 64.

[0065] The nozzle 87 includes a turntable 871 fixed at the bottom of the infusion tube 85 and a nozzle 872 arranged at the bottom of the turntable 871. A slide groove 873 is opened at the bottom of the turntable 871, and the nozzle 872 is rotatably arranged inside the slide groove 873; wherein the nozzle 872 swings under the action of centrifugal force.

[0066] Specifically, a rotating part 874 is rotatably arranged on the inner side of the turntable 871, a slider 875 is slidably arranged on the inner side of the slide groove 873, a nozzle 872 is rotatably arranged on the side of the slider 875 away from the rotating part 874, a gear 877 is fixedly arranged on the rotating end of the nozzle 872, a tooth plate 878 is arranged on the top of the gear 877, and the tooth plate 878 is fixedly arranged on the inner side of the turntable 871; wherein, the nozzle 872 is connected with the inside of the infusion tube 85 through the connecting hose 853, a ball 876 is arranged on the side of the slider 875 close to the rotating part 874, a spring A879 is arranged on the side of the slider 875 away from the rotating part 874, the other end of the spring A879 is fixedly arranged on the inner side of the turntable 871, and a plurality of tooth segments are arranged at the bottom of the tooth plate 878 for driving the nozzle 872 to swing within a range of 90°.

[0067] The liquid outlet gap 65 is arc-shaped, and the top and bottom of the cross-section of the liquid outlet gap 65 are two V-shaped openings that are far away from each other, and an inverted V-shaped ring 651 is formed between the two adjacent V-shaped openings at the top of the liquid outlet gap 65, so that the limiting plate 61 has no flat surface within the range surrounded by the filter membrane 64, preventing the activated carbon particles from forming accumulation.

[0068] It also includes a liquid spray gun 9 for cleaning the top of the seal 2 and for supplying liquid to the liquid spray assembly 8; the liquid spray gun 9 includes a gun body 91 slidably arranged on the side wall of the decolorizing tank 1, a ball head 92 is arranged at one end of the gun body 91 close to the seal 2, a liquid outlet hole is opened inside the ball head 92 toward the top of the seal 2, and the ball head 92 slides in the side wall of the decolorizing tank 1 under the action of elastic force; wherein, a 21 is fixedly arranged on the outside of the seal 2 for squeezing the ball head 92 for storage and sealing the side wall of the decolorizing tank 1; a limiting plate 93 is fixedly arranged on the outside of the gun body 91, a connecting head 95 is fixedly arranged on the end of the gun body 91 away from the ball head 92, a surrounding plate 18 is also slidably arranged on the outside of the gun body 91, the surrounding plate 18 is fixedly arranged on the outside of the decolorizing tank 1, and a spring B94 is arranged on the outside of the gun body 91 between the limiting plate 93 and the surrounding plate 18.

[0069] Principles and advantages of glycerin waste liquid integrated recovery system:

[0070] First, the glycerin waste liquid is input into the impurity removal device 3 for impurity removal, and then the organic salt is removed by the ion exchanger 4, and then it is input into the decolorization tank 1 for decolorization, and finally the glycerin recovery product is obtained by vacuum dehydration through the dehydration device 5; specifically, deionized water can be added into the impurity removal device 3 to mix with the glycerin waste liquid, and then an adsorbent is added to continue stirring and then allowed to stand, and then vacuum filtration is performed; the filtrate enters the ion exchanger 4 at a certain flow rate for organic salt treatment, and the ion exchanger 4 is provided with anion or cation exchange columns. In this scheme, the ratio of the number of cation exchange columns to anion exchange columns is 1:2, so that the organic salts in the glycerin are removed by the acidic ion exchange resin column and the alkaline ion exchange resin column in turn, and finally the activated carbon in the decolorization tank 1 and the dehydration device 5 are respectively decolorized and dehydrated to achieve the recovery of the glycerin waste liquid;

[0071] It is worth noting that when the glycerin waste liquid enters the decolorization tank 1, it is input between the decolorization tank 1 and the sleeve plate 14 through the liquid inlet pipe 15 to prevent direct impact on the activated carbon inside the decolorization tank 1, so that the glycerin waste liquid enters the decolorization tank 1 through the lower liquid inlet gap 11 and contacts with the activated carbon. During the contact process, the pigment in the glycerin is adsorbed through the pores on the surface of the activated carbon, thereby achieving the decolorization of the glycerin by the activated carbon; the decolorized glycerin waste liquid flows upward through the liquid outlet gap 65 on the inner side of the limit plate 61 and enters the encirclement of the filter membrane 64. At this time, the large particles of activated carbon are blocked by the liquid outlet gap 65, while the small particles of activated carbon can flow upward through the liquid outlet gap 65; when the glycerin waste liquid is filtered through the filter membrane 64 under the action of pressure, the small particles of activated carbon are blocked by the filter membrane 64 and will adhere to the filtering side of the filter membrane 64. In order to prevent the filter membrane 6 4 is blocked by activated carbon, the waste liquid on the outside of the filter membrane 64 can be sucked into the inside of the liquid infusion pipe 85 by the liquid pump 81, and finally sprayed to the filtering side of the filter membrane 64 by the nozzle 87, and the nozzle 87 is rotated under the drive of the motor B86 to stir the glycerin waste liquid on the inside of the filter membrane 64 to prevent the activated carbon particles from being statically adsorbed on the surface of the filter membrane 64; when the activated carbon inside the decolorization tank 1 needs to be replaced, first stop conveying the glycerin waste liquid to the liquid inlet pipe 15 and perform back suction, at this time, the residual waste liquid inside the decolorization tank 1 will flow downward, and under the action of the top inclined surface of the piston column, the waste liquid is guided to the liquid inlet gap 11 for discharge, and then the piston column is driven by the hydraulic push rod 23 to slide downward on the inside of the decolorization tank 1, the seal on the bottom of the decolorization tank 1 is released, and the activated carbon inside the decolorization tank 1 is discharged downward, thereby preventing a lot of residual waste liquid inside the decolorization tank 1 from being discharged together with the activated carbon.

[0072] The advantages of the invention are as follows: the bottom of the decolorizing tank 1 is sealed by the seal 2, so that the activated carbon inside the decolorizing tank 1 is supported. When the activated carbon is replaced and discharged, the piston rod in the seal 2 is moved out of the bottom of the decolorizing tank 1 to release the seal, so that the activated carbon is directly discharged to the activated carbon conveying equipment below, so as to facilitate the recovery of large-particle activated carbon; and when the remaining waste liquid on the inner side of the filter membrane 64 flows downward, the small-particle activated carbon can move downward along the liquid outlet gap 65, and finally be discharged together with the large-particle activated carbon, so as to achieve the filtering and recovery of the small-particle activated carbon, and there is no need to separately convey the glycerin waste liquid containing small-particle activated carbon to the filtering process for treatment, so as to achieve the effect of integrated recovery of large and small-particle activated carbon in the glycerin waste liquid treatment process; and in order to prevent the remaining waste liquid from being discharged together with the activated carbon, before the seal 2 is released, the remaining waste liquid inside the decolorizing tank 1 flows out through the liquid inlet gap 11 under the action of the top slope of the piston rod, so as to prevent the glycerin waste liquid from leaking when the activated carbon is replaced, and there is no need to separate it again after the activated carbon is discharged.

[0073] When the lifting assembly 7 in the integrated glycerin waste liquid recovery system of the present application is in operation, the screw rod 71 is driven by the motor A72 to make axial feeding, so that the screw rod 71 pushes the infusion tube 85 to lift and lower, and then when the nozzle 87 sprays the glycerin waste liquid, it can be lifted and lowered while rotating, so as to improve the stirring effect of the waste liquid inside the filter membrane 64; and when discharging the activated carbon, the limit plate 61 is pushed downward by the screw rod 71, so that the limit plate 61 can clean the inner side of the decolorization tank 1 through the outer sealing ring to prevent the accumulation of activated carbon particles on the inner wall of the decolorization tank 1, and the filter membrane 64 can be pushed to the end of the liquid spray gun 9, and the cleaning liquid is provided to the outer side of the filter membrane 64 through the liquid spray gun 9, so that the liquid pump 81 sprays the cleaning liquid to the filtering surface of the filter membrane 64 through the nozzle 87, so as to clean the filter membrane 64 when replacing the activated carbon, and the cleaned activated carbon particles can automatically fall down to the activated carbon conveying equipment for transportation, so as to achieve the cleaning effect of the activated carbon particles.

[0074] Its advantages are that during the decolorization process of glycerin waste liquid, the nozzle 87 is driven to rise and fall by the screw rod 71, which can improve the stirring effect of the nozzle 87 on the waste liquid inside the filter membrane 64 when it is rotating, and when replacing and discharging the activated carbon particles, the limit plate 61 is pushed to slide downward by the screw rod 71, so that the limit plate 61 cleans the inner wall of the decolorization tank 1, and drives the filter membrane 64 to move to the position corresponding to the spray gun 9, so that the spray gun 9 provides cleaning liquid to the outside of the filter membrane 64, so that the filter membrane 64 can be cleaned by the spray assembly 8, and the spray gun 9 can spray liquid to the inclined surface of the top of the piston column after the piston column in the sealing member 2 moves downward, and the water flow is gathered under the action of 21, so that the activated carbon particles on the inclined surface are discharged downward, and when 21 is in a sealed state, the spray gun 9 is squeezed and stored to ensure the sealing of the side wall of the decolorization tank 1.

[0075] When the nozzle 87 in the integrated glycerin waste liquid recovery system of the present application is in operation, the infusion tube 85 is driven by the motor B86 to rotate at a high speed, so that the rotating part 874 inside the turntable 871 rotates under the centrifugal effect, and the sliding block 875 is pushed to slide along the slide groove 873 by the rotating part 874. At this time, the rotating part 874 overcomes the elastic force of the ball 876. When the sliding block 875 slides, it drives the nozzle 872 to move horizontally. The nozzle 872 rotates upward through the outer gear 877 and the tooth plate 878. When the gear 877 is separated from the tooth segment at one end, it rotates downward under the action of its own gravity. Then, during the continuous rotation of the nozzle 87, the nozzle 872 can swing by itself to adjust the cleaning range of the nozzle 872, and spray liquid onto the surface of the filter membrane 64 at the highest rotation speed of the infusion tube 85 to adapt to different working conditions.

[0076] It is worth mentioning that the above-mentioned liquid spraying method has the following advantages:

[0077] Advantage 1: The centrifugal effect of the nozzle 87 during rotation causes the nozzle 872 to swing, so that the cleaning range can be automatically adjusted when cleaning the activated carbon particles, thereby achieving comprehensive cleaning of the activated carbon on the top of the limiting plate 61.

[0078] Advantage 2: When the nozzle 87 rotates at the highest speed, the centrifugal force drives the nozzle 872 to rotate at the maximum angle, so that the output end of the nozzle 872 faces the filtering surface of the filter membrane 64, thereby cleaning the filter membrane 64 when discharging the activated carbon.

[0079] Advantage three: during the decolorization process, the nozzle 872 can swing while rotating. By adjusting the driving speed of the motor B86, the stirring effect of the waste liquid inside the filter membrane 64 can be improved, and compared with the traditional stirring structure, the stirring effect is better.

[0080] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A glycerol waste liquid integrated recovery system, characterized in that: include: A decolorizing tank for containing activated carbon, wherein an activated carbon conveying device is arranged at the bottom of the decolorizing tank, a liquid inlet gap is opened on the outside of the decolorizing tank, a liquid outlet pipe is fixedly arranged on the outside of the decolorizing tank, and the liquid outlet pipe and the liquid inlet gap are arranged in an upper and lower distribution; A sealing member, used for sealing the bottom of the decolorizing tank to support the activated carbon, wherein the sealing member is slidably arranged at the bottom of the decolorizing tank; A filter assembly, used for filtering activated carbon particles in the glycerol waste liquid, wherein the filter assembly is arranged inside the decolorization tank; The sealing member comprises a piston column slidably arranged inside the decolorizing tank, the piston column is driven by an external force to slide to release the seal on the bottom of the decolorizing tank, the top of the piston column is an inclined surface, and the downwardly inclined side of the inclined surface faces the liquid inlet gap; A feed pipe is fixedly arranged on the outside of the decolorization tank for adding activated carbon, and the filter assembly includes a limit plate, which is slidably connected to the decolorization tank through an outer sealing ring, a liquid outlet gap is opened on the inner side of the limit plate, and a filter membrane is arranged on the top of the limit plate; The liquid outlet gap is used to block large particles of activated carbon, the filter membrane is used to filter and collect small particles of activated carbon, and the limit plate seals the feed pipe during the decolorization process; It also includes a lifting component for driving the limit plate to lift and slide; the lifting component includes a screw rod, which is arranged on the top of the decolorization tank and drives the limit plate to slide along the axial feed when driven by external force.

2. The integrated glycerin waste liquid recovery system according to claim 1, characterized in that: It also includes a de-impurity device for removing solid waste, an ion exchanger for removing organic salts, and a dehydration device for vacuum dehydration. The output end of the de-impurity device is correspondingly connected to the input end of the ion exchanger, the output end of the ion exchanger is correspondingly connected to the input end of the decolorization tank, and the input end of the dehydration device is correspondingly connected to the liquid outlet pipe.

3. The integrated glycerin waste liquid recovery system according to claim 1, characterized in that: A sleeve plate is fixedly arranged on the outside of the decolorizing tank, and a liquid inlet pipe is fixedly arranged on the outside of the sleeve plate. The liquid inlet pipe is located on a side of the sleeve plate away from the liquid inlet gap.

4. The integrated glycerin waste liquid recovery system according to claim 1, characterized in that: It also includes a liquid spray component, the liquid spray component includes a liquid infusion tube, the liquid infusion tube is coaxially arranged with the decolorization tank, one end of the liquid infusion tube extends to the inside of the filter membrane, the liquid infusion tube is located inside the filter membrane and is provided with a nozzle, and the liquid infusion tube is driven by an external force to drive the nozzle to rotate; The infusion tube is used to extract the filtered glycerin waste liquid clear liquid during the decolorization process, and spray it toward the inner side of the filter membrane through a rotating nozzle. The infusion tube is driven by a screw rod to slide.

5. The integrated glycerin waste liquid recovery system according to claim 4, characterized in that: The nozzle includes a turntable fixed at the bottom of the infusion tube and a nozzle arranged at the bottom of the turntable. A slide groove is provided at the bottom of the turntable, and the nozzle is rotatably arranged inside the slide groove; wherein the nozzle swings under the action of centrifugal force.

6. The integrated glycerin waste liquid recovery system according to claim 5, characterized in that: A rotating member is rotatably arranged inside the rotating disk, a slider is slidably arranged inside the sliding groove, a nozzle is rotatably arranged on the side of the slider away from the rotating member, a gear is fixedly arranged on the rotating end of the nozzle, a tooth plate is arranged on the top of the gear, and the tooth plate is fixedly arranged on the inner side of the rotating disk; The rotating member is acted upon by centrifugal force to push the slider to slide, and the slider is automatically reset under the action of elastic force.

7. The integrated glycerin waste liquid recovery system according to claim 5, characterized in that: The liquid outlet gap is in an arc shape, and the top and bottom of the cross section of the liquid outlet gap are two V-shaped openings that are open away from each other, and an inverted V-shaped ring is formed between two adjacent V-shaped openings at the top of the liquid outlet gap.

8. The integrated glycerin waste liquid recovery system according to claim 7, characterized in that: It also includes a liquid spray gun, which includes a gun body slidably arranged on the side wall of the decolorizing tank, used for cleaning the top of the seal and for supplying liquid to the liquid spray assembly, and a ball head is arranged at one end of the gun body; Wherein, a sealing sleeve is fixedly arranged on the outside of the sealing member, which is used to squeeze the ball head for storage and seal the side wall of the decolorizing tank.

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