CN117339252B

CN117339252B - Toluene recovery device

Info

Publication number: CN117339252B
Application number: CN202311650453.4A
Authority: CN
Inventors: 刘章勇; 李向波; 李强强
Original assignee: Dongying Yunxiang Chemical Co ltd
Current assignee: Dongying Yunxiang Chemical Co ltd
Priority date: 2023-12-05
Filing date: 2023-12-05
Publication date: 2024-02-27
Anticipated expiration: 2043-12-05
Also published as: CN117339252A

Abstract

The invention relates to the technical field of toluene recovery, and discloses a toluene recovery device, which comprises a working barrel, wherein a supporting annular plate is arranged at the upper end of the working barrel, a liquid discharge pipe is communicated with the lower end of the working barrel, a transfusion unit and a recovery unit are arranged on the supporting annular plate, the recovery unit comprises a recovery barrel and an activated carbon block which are arranged on the supporting annular plate, a liquid guide box is fixedly connected to the upper end surface of the recovery barrel, and a liquid inlet pipe is arranged on the outer wall of the liquid guide box; according to the invention, toluene containing mother liquor is pumped into the liquid guide box through the infusion unit, the mother liquor impacts the blades in the liquid guide box to enable the blades to rotate, so that the reciprocating screw rod is driven to rotate, the extruding plate is driven to move up and down, the mother liquor is extruded to the activated carbon block, the mother liquor rapidly passes through the activated carbon block, the activated carbon block rapidly recovers toluene in the mother liquor, the density of the activated carbon block can be set to be larger, the recovery rate of toluene in the mother liquor is improved, and meanwhile, the recovery efficiency of toluene in the mother liquor is also improved.

Description

Toluene recovery device

Technical Field

The invention relates to the technical field of toluene recovery, in particular to a toluene recovery device.

Background

Toluene, an organic compound, is a colorless, volatile liquid with a specific fragrance. Has strong refraction. Is miscible with ethanol, diethyl ether, acetone, chloroform, carbon disulfide and glacial acetic acid, and is very slightly soluble in water. Inflammable, the steam can form explosive mixture with air, the mixture can explode when the volume concentration is in a lower range, and the high-concentration gas has anaesthesia and irritation; in some industrial production, toluene is often required, and in order to avoid pollution to the environment and reduce the cost, the discharged sewage, liquid and other mother liquor containing toluene are recycled by the recycling device, so that the toluene in the mother liquor is recycled.

Prior art is as patent of publication No. CN218740341U discloses a toluene recovery unit, including the work bucket, the supporting top cap that is provided with in work bucket top, top cap lower surface fixedly connected with external screw thread post, the filling port has been seted up to the top cap upper surface, work bucket internal surface is close to top position fixedly connected with solid fixed ring, work bucket internal surface is provided with the spacing ring, solid fixed surface has the recovery bucket under the spacing ring, the bottom is provided with toluene recovery active carbon piece in the recovery bucket, recovery bucket internal surface is provided with the buffer board, and mother liquor that this patent was heated at the during operation is injected along the filling port of top cap, and the buffer board is followed to get into toluene recovery active carbon piece along the hole of buffer board, is retrieved active carbon piece by toluene and carries out the collection of toluene, accomplishes the mother liquor output through the hole of recovery bucket bottom to discharge along the discharging pipe, and the recovery of para-toluene carries out further optimization, promotes recovery effect.

The prior art has obvious beneficial effects, but has the following defects:

according to the prior art, the toluene in the mother liquor is adsorbed by the toluene recovery activated carbon block in the recovery barrel through pouring the mother liquor into the recovery barrel, so that the recovery of the toluene in the mother liquor is realized, but when the toluene recovery activated carbon block is small in density, the contact surface between the mother liquor and the toluene recovery activated carbon block is small, so that the recovery of the toluene in the mother liquor is reduced, if the toluene recovery activated carbon block is large in density, the toluene recovery activated carbon block can block the mother liquor, the efficiency of the mother liquor passing through the toluene recovery activated carbon block is influenced, only the toluene in a small amount of mother liquor can be recovered, the toluene recovery of a large amount of mother liquor in industrialization cannot be adapted, and the practicality is influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the toluene recovery device which is convenient for recovering toluene in the mother liquor and has higher recovery rate and efficiency for toluene in the mother liquor.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a toluene recovery unit, including the work bucket, the support ring board is installed to the upper end of work bucket, the lower extreme intercommunication of work bucket has the fluid-discharge tube, install infusion unit and recovery unit on the support ring board, recovery unit is including installing recovery bucket and the active carbon piece on the support ring board, the up end fixedly connected with drain box of recovery bucket, the feed liquor pipe is installed to the outer wall of drain box, the liquid outlet with the recovery bucket intercommunication is seted up to the inside bottom surface of drain box, the inside roof rotation of drain box is connected with reciprocating screw, reciprocating screw's outer wall fixedly connected with is located the blade of drain box, reciprocating screw's lower extreme wears to establish in the recovery bucket and threaded connection has the stripper plate, the bottom surface fixedly connected with many gag lever posts of drain box, stripper plate sliding connection is at the outer wall of gag lever post, the mounting hole has been seted up to the lateral wall of recovery bucket, install the dismouting unit that is used for carrying out dismouting to the active carbon piece in the dismouting unit, the drain hole has been seted up to the bottom surface of drain hole of drain box, the output end and the feed liquor pipe intercommunication of drain pipe of infusion unit, the floating valve is carried in the feed liquor pipe, the valve is carried to the feed liquor.

Preferably, the recovery unit further comprises a liquid return pipe, wherein the liquid return pipe is of a C-shaped structure, two ends of the liquid return pipe are communicated with the recovery barrel, the liquid return pipe is arranged at the upper end of the recovery barrel, and a yielding port for yielding the liquid return pipe is formed in the inner wall of the supporting annular plate.

Preferably, the recovery unit further comprises a connecting plate, the connecting plate is fixedly connected with the lower end face of the limiting rod, and the lower end of the reciprocating screw rod is rotationally connected with the upper surface of the connecting plate.

Preferably, the operation mouth has been seted up to the outer wall of work bucket and the spacing spout of communicating with the operation mouth, the dismouting unit includes sieve box and blend stop, blend stop and spacing spout sliding connection, sieve box is pegged graft to in the recycling bin through the installation mouth activity, the activity of active carbon piece is placed in sieve box, the outer wall fixedly connected with closing plate of sieve box, closing plate and installation mouth activity peg graft, the closing plate seals the installation mouth and shelters from, the outer wall fixedly connected with seal frame of closing plate, seal frame and operation mouth activity peg graft, seal frame seals the shelter from the operation mouth, the blend stop activity is blocked at the outer terminal surface of seal frame, the outer wall fixedly connected with handle of seal frame.

Preferably, the infusion unit comprises a water pump, the water pump is arranged on the upper surface of the supporting annular plate, the output end of the water pump is communicated with the liquid inlet pipe, the output end of the water pump is communicated with a mother liquor extraction pipe, the outer wall of the mother liquor extraction pipe is communicated with an auxiliary pipe, and the other end of the auxiliary pipe is penetrated into the lower end of the working barrel.

Preferably, the floating valve unit comprises a limiting plate and an electromagnet ring, both ends of the limiting plate are fixedly connected with the inner wall of the working barrel, the middle part of the limiting plate is slidably connected with a floating pipe, both ends of the floating pipe are provided with sealing guide valve heads, the sealing guide valve heads at the upper ends of the floating pipe are movably inserted with the liquid draining port, the sealing guide valve heads at the lower ends of the floating pipe are movably inserted with the liquid draining pipe, the upper end outer wall of the floating pipe is provided with the floating plate, the outer wall of the lower end of the floating pipe is provided with a pontoon, the outer wall of the lower end of the floating pipe is fixedly connected with a limiting ring for blocking the pontoon, the electromagnet ring is embedded and arranged on the inner bottom surface of the working barrel, and the bottom surface of the pontoon is embedded and provided with a magnetic ring magnetically attracted with the electromagnet ring.

Preferably, the floating valve unit further comprises a sealing baffle ring, the sealing baffle ring is installed and connected to the outer wall of the lower end of the floating pipe, the sealing baffle ring, the sealing guide valve head and the floating plate are integrally formed, the floating pipe, the sealing baffle ring, the sealing guide valve head and the floating plate are of hollow structures, and the pontoon is slidably connected with the outer wall of the floating pipe.

Preferably, the floating valve unit further comprises an electric inlet wire, an electric conducting wire and a connecting rod, one end of the connecting rod is fixedly connected with the outer wall of the upper end of the floating tube, one end of the electric inlet wire is penetrated into the working barrel, the other end of the electric inlet wire is electrically connected with an external circuit, one end of the electric conducting wire is communicated with the electromagnetic ring, the other end of the electric conducting wire is penetrated out of the working barrel, the electric conducting wire supplies power to the water pump, the adjacent ends of the electric inlet wire and the electric conducting wire are electrically connected with first electrode plates, and the upper end of the connecting rod is fixedly connected with second electrode plates corresponding to the two first electrode plates.

Preferably, the inner wall fixedly connected with waterproof baffle ring of work barrel, the lower extreme of recycling bin is located waterproof baffle ring, and waterproof baffle ring and its sliding connection are worn to set up to the one end of connecting rod, and second electrode piece and two first electrode pieces are all located waterproof baffle ring's top.

Preferably, the drain is of a horizontal S-shaped configuration.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, toluene containing mother liquor is pumped into the liquid guide box through the infusion unit, the mother liquor impacts the blades in the liquid guide box to enable the blades to rotate, so that the reciprocating screw rod is driven to rotate, the extruding plate is driven to move up and down, the mother liquor is extruded to the activated carbon block, the mother liquor is enabled to rapidly pass through the activated carbon block, the activated carbon block is enabled to rapidly recover toluene in the mother liquor, and the density of the activated carbon block can be set to be larger, so that the recovery rate of toluene in the mother liquor is improved.

2. According to the invention, the dismounting unit is arranged in the dismounting unit, and the dismounting unit is used for dismounting the activated carbon block from the side walls of the working barrel and the recycling barrel, so that the toluene absorbed in the activated carbon block can be conveniently recycled, and meanwhile, the activated carbon block can be conveniently replaced.

3. According to the invention, the infusion unit extracts heated mother liquor from the outside to recycle toluene, and simultaneously pumps back the mother liquor filtered by the activated carbon block for multiple times to filter for multiple times, so that the toluene recovery rate in the mother liquor is ensured, and the practicability is improved.

4. According to the invention, the floating valve unit is arranged in the working barrel, the floating valve unit can control the filtered mother liquor to enter the working barrel or discharge the filtered mother liquor according to the amount of the filtered mother liquor in the working barrel, and the floating valve unit completely depends on the buoyancy of the filtered mother liquor falling into the working barrel to open and close the mother liquor discharge, so that the device is free from manual control and convenient to use.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of a working barrel according to the present invention;

FIG. 3 is a schematic view of the structure of the support ring plate of the present invention;

FIG. 4 is a schematic view of the position of the floating valve unit and recovery unit of the present invention in combination;

FIG. 5 is a schematic view of the assembly and disassembly unit and the working barrel according to the present invention;

FIG. 6 is a schematic view of the assembly and disassembly unit of the present invention;

FIG. 7 is a schematic cross-sectional view of a recycling bin according to the present invention;

FIG. 8 is a schematic view of the structure of the floating valve unit of the present invention;

FIG. 9 is an enlarged view of a portion of FIG. 8 at A;

FIG. 10 is a schematic diagram of a detailed construction of a floating valve unit according to the present invention;

FIG. 11 is a schematic view of the bottom surface structure of the pontoon according to the invention.

In the figure: 1. a working barrel; 2. a support ring plate; 3. a recovery unit; 31. a recycling bin; 32. a liquid outlet; 33. a liquid guide box; 34. a reciprocating screw rod; 35. a blade; 36. a liquid outlet; 37. a limit rod; 38. a connecting plate; 39. a liquid return pipe; 310. an extrusion plate; 311. an activated carbon block; 312. a liquid inlet pipe; 313. a mounting port; 4. a disassembling and assembling unit; 41. a screen box; 42. a sealing plate; 43. a sealing frame; 44. a handle; 45. a barrier strip; 5. a floating valve unit; 51. a limiting plate; 52. a floating pipe; 53. a floating plate; 54. sealing the guide valve head; 55. a sealing baffle ring; 56. a pontoon; 57. an electromagnet ring; 58. a magnetic ring; 59. a limiting ring; 510. feeding wires; 511. a conductive wire; 512. a first electrode sheet; 513. a connecting rod; 514. a second electrode sheet; 6. an infusion unit; 61. a water pump; 62. a mother liquor extraction pipe; 63. an auxiliary tube; 7. a waterproof baffle ring; 8. a liquid discharge pipe; 9. a yielding port; 10. an operation port; 11. limiting sliding groove.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the present invention, based on the embodiments herein.

Referring to fig. 1 to 11, the toluene recycling device of this embodiment includes a working barrel 1, a supporting ring plate 2 is installed at the upper end of the working barrel 1, a liquid discharge pipe 8 is connected to the lower end of the working barrel 1, a transfusion unit 6 and a recycling unit 3 are installed on the supporting ring plate 2, the recycling unit 3 includes a recycling barrel 31 and an activated carbon block 311 installed on the supporting ring plate 2, a liquid guide box 33 is fixedly connected to the upper end surface of the recycling barrel 31, a liquid inlet 312 is installed on the outer wall of the liquid guide box 33, a liquid outlet 36 communicated with the recycling barrel 31 is provided at the inner bottom surface of the liquid guide box 33, a reciprocating screw 34 is rotatably connected to the inner top wall of the liquid guide box 33, a blade 35 located in the liquid guide box 33 is fixedly connected to the outer wall of the reciprocating screw 34, a plurality of limiting rods 37 are connected to the bottom surface of the liquid guide box 33 in a penetrating mode, the limiting rods 37 are slidably connected to the outer wall of the limiting rods 37, a mounting port 313 is provided on the side wall of the recycling barrel 31, a liquid guide block 311 is installed in the mounting port 313, a liquid discharge valve 311 for mounting and dismounting the activated carbon block 311 is used for mounting the activated carbon block 4 in the liquid guide box 31, a liquid discharge unit 4 is mounted in the liquid guide box 3, a liquid discharge unit 4 is mounted on the liquid guide box 3, a liquid discharge unit 3 is mounted on the bottom surface of the liquid guide box 33, and a liquid guide unit 3 is mounted on the liquid guide unit 6, and a liquid discharge unit is mounted on the liquid guide unit 3, and is connected to the liquid guide unit 3, and is mounted on the liquid guide unit 3, and can be mounted by a valve, and can be mounted by a device.

Specifically, the toluene recovery device has a structure similar to that of the existing toluene recovery device, and the main improvement point of the invention is that the toluene in the mother liquor is conveniently recovered, and the recovery rate and the recovery efficiency of the toluene in the mother liquor are both higher; when toluene contained in the mother liquor is required to be recovered, the mother liquor heated from the outside is conveyed into the liquid guide box 33 through the liquid inlet pipe 312 by the infusion unit 6, the mother liquor conveyed into the liquid guide box 33 impacts the blade 35 to drive the blade 35 to rotate, and the blade 35 drives the reciprocating screw rod 34 to rotate (notably, the reciprocating screw rod 34 can be guided to penetrate through the blade 35, and a driving motor is additionally arranged at the penetrating section of the reciprocating screw rod 34 so as to guide the reciprocating screw rod 34 to rotate, and the phenomenon of insufficient pushing force of wood leaves is avoided).

Finally, the mother liquor falls into the recycling bin 31 from the liquid outlet 36 at the bottom of the liquid guide box 33, the inner wall of the upper end of the recycling bin 31 is in a horn shape, the inner diameter of the upper end of the recycling bin 31 is larger than the inner diameter of the lower end of the recycling bin 31, the reciprocating screw 34 drives the extrusion plate 310 to move up and down in the recycling bin 31, the extrusion plate 310 and the limiting rod 37 slide, the limiting rod 37 limits the extrusion plate 310, the mother liquor falling on the upper surface of the extrusion plate 310 is driven to rise when the extrusion plate 310 rises (at the moment, the mother liquor on the upper surface of the extrusion plate 310 does not fully occupy the space between the extrusion plate 310 and the liquid outlet 36), when the extrusion plate 310 moves to the inner wall of the upper end of the recycling bin 31 in a horn shape, the mother liquor entering the recycling bin 31 can fall below the extrusion plate 310 from the position between the extrusion plate 310 and the recycling bin 31, and naturally when the equipment is arranged to be larger (at the moment, the mother liquor on the extrusion plate 310 accumulates more), a through one-way valve (at the moment, the inlet of the one-way valve can only be ensured), the upward through the extrusion plate 310 (or the mother liquor directly drops to the lower side of the extrusion plate 310 at the moment) can only flow through the one-way valve, the one-way valve can flow, the operation is ensured, the situation is not influenced, the operation is ensured, and the operation is normally is ensured, and the operation is not affected, but the one-way valve is ensured.

When the extrusion plate 310 descends at this time, mother liquor falling between the extrusion plate 310 and the activated carbon block 311 can be extruded, so that the mother liquor is rapidly filtered by the activated carbon block 311, toluene in the mother liquor is recovered by the activated carbon block 311, the filtered mother liquor is discharged from a liquid outlet 32 at the bottom of the recovery barrel 31 and falls into the working barrel 1 and is discharged along the liquid discharge pipe 8, the mother liquor can be rapidly filtered by the activated carbon block 311 to recover the toluene in the mother liquor, the density of the activated carbon block 311 can be set to be larger, the recovery rate of toluene in the mother liquor is improved, the recovery efficiency of toluene in the mother liquor is also improved, and the practicability is improved; wherein support ring plate 2 passes through the bolt installation with work drum 1, can conveniently demolish and clear up work drum 1 inside, and recovery bucket 31 also installs through bolt and support ring plate 2, and recovery bucket 31 is also dismantled and assembled, facilitates the use.

Specifically, the recovery unit 3 further comprises a liquid return pipe 39, the liquid return pipe 39 is of a C-shaped structure, two ends of the liquid return pipe 39 are communicated with the recovery barrel 31, the liquid return pipe 39 is installed at the upper end of the recovery barrel 31, and a yielding port 9 for yielding the liquid return pipe 39 is formed in the inner wall of the support ring plate 2; when the extrusion plate 310 ascends and does not move to the horn-shaped part at the upper end of the recycling bin 31, mother liquor falls above the extrusion plate 310, the extrusion plate 310 ascends to drive the mother liquor on the upper surface of the extrusion plate to ascend, when the extrusion plate 310 ascends and moves through the opening at the lower end of the liquid return pipe 39, water on the upper surface of the extrusion plate 310 can enter the liquid return pipe 39 through the opening at the upper end of the liquid return pipe 39 and flow to the lower side of the extrusion plate 310 from the lower end of the liquid return pipe 39, so that the mother liquor storage amount below the extrusion plate 310 is improved, the mother liquor amount extruded by the extrusion plate 310 for one time is improved, and the toluene recycling efficiency in the mother liquor is improved.

Specifically, the recovery unit 3 further comprises a connecting plate 38, the connecting plate 38 is fixedly connected with the lower end face of the limiting rod 37, and the lower end of the reciprocating screw rod 34 is rotatably connected with the upper surface of the connecting plate 38; the connection plate 38 limits the lower ends of the limit rod 37 and the reciprocating screw 34, improves the strength and maintains stability, and both ends of the connection plate 38 may be fixed with the inner wall of the recovery tub 31 to maintain stability.

Specifically, the operation mouth 10 and the spacing spout 11 that communicates with the operation mouth 10 have been seted up to the outer wall of work bucket 1, dismouting unit 4 includes screen box 41 and blend stop 45, blend stop 45 and spacing spout 11 sliding connection, screen box 41 is movably pegged graft to in the recycling bin 31 through mounting hole 313, active carbon piece 311 activity is placed in screen box 41, the outer wall fixedly connected with closing plate 42 of screen box 41, closing plate 42 is movably pegged graft with mounting hole 313, closing plate 42 seals the shielding of mounting hole 313, closing plate 42's outer wall fixedly connected with seal frame 43, seal frame 43 and operation mouth 10 activity peg graft, seal frame 43 seals the shielding of operation mouth 10, blend stop 45 activity is pegged graft at seal frame 43's outer terminal surface, seal frame 43's outer wall fixedly connected with a plurality of handles 44.

After entering the activated carbon block 311, the mother liquor is filtered by the activated carbon block 311, passes through the sieve box 41, falls to the bottom of the recycling bin 31, and is discharged from the liquid outlet 32; when the activated carbon block 311 needs to be replaced, the movable barrier strip 45 slides in the limiting chute 11, so that the barrier strip 45 slides to the limiting chute 11 completely from the operation opening 10, at the moment, the barrier strip 45 does not block the sealing frame 43, the handle 44 is arranged outside, the handle 44 drives the sealing frame 43 to move outwards, the sealing frame 43 drives the sealing plate 42 to slide out of the mounting opening 313, the sealing plate 42 pulls out the sieve box 41 positioned in the recycling bin 31 from the mounting opening 313 and the operation opening 10, the sieve box 41 pulls out the activated carbon block 311 from the recycling bin 31 and the working drum 1, at the moment, the activated carbon block 311 can be taken out from the sieve box 41 to be replaced, thereby treating and recovering toluene adsorbed in the activated carbon block 311, and putting new activated carbon block 311 into the sieve box 41, inserting the sieve box 41 into the recycling bin 31 from the operation opening 10 and the mounting opening 313, and enabling the sealing plate 42 to be inserted into the mounting opening 313 to seal the mounting opening 313, meanwhile, the sealing frame 43 shields the operation opening 10, and the barrier strip 45 is pulled out from the recycling bin 31, at the moment, the barrier strip 45 is moved to the inner wall of the operation opening 10, and then the activated carbon block 311 is taken out from the sieve box 41 to be replaced, thereby facilitating replacement of the activated carbon block 311, and the activated carbon block 311 is conveniently replaced, and the activated carbon block is conveniently and replaced.

Specifically, the infusion unit 6 includes a water pump 61, the upper surface at the support ring plate 2 is installed to the water pump 61, and the output and the feed liquor pipe 312 intercommunication of water pump 61, the output intercommunication of water pump 61 have mother liquor extraction pipe 62, and the outer wall intercommunication of mother liquor extraction pipe 62 has auxiliary pipe 63, and the other end of auxiliary pipe 63 wears to establish to inside the work drum 1 lower extreme.

The mother liquor after heating can be extracted to the one end that the water pump 61 was kept away from to mother liquor extraction pipe 62, and the water pump 61 is through mother liquor extraction pipe 62 extraction after heating and carry to in the drain box 33 from feed liquor pipe 312, and the water pump 61 cooperates auxiliary pipe 63 simultaneously will be followed and filter the mother liquor that falls to work barrel 1 bottom and take back to retrieve in the unit 3 again, the mother liquor is through many times filtration, in order to ensure the toluene rate of recovery in the mother liquor, improve the practicality, when the mother liquor liquid level height of accumulation in work barrel 1 is close to recovery barrel 31 soon, can carry out the toluene of going back in the mother liquor with the mother liquor after filtering and carry out further recovery optimization.

The water pump 61 is commercially available, which belongs to a mature technology and is fully disclosed, so that the description is not repeated.

Specifically, the floating valve unit 5 comprises a limiting plate 51 and an electromagnet ring 57, two ends of the limiting plate 51 are fixedly connected with the inner wall of the working barrel 1, the middle part of the limiting plate 51 is slidably connected with a floating pipe 52, two ends of the floating pipe 52 are provided with sealing guide valve heads 54, the sealing guide valve heads 54 at the upper ends of the floating pipe 52 are movably inserted with the liquid discharge ports 32, the sealing guide valve heads 54 at the lower ends of the floating pipe 52 are movably inserted with the liquid discharge pipes 8, the upper outer wall of the floating pipe 52 is provided with a floating plate 53, the lower outer wall of the floating pipe 52 is provided with a pontoon 56, the lower outer wall of the floating pipe 52 is fixedly connected with a limiting ring 59 for blocking the pontoon 56, the electromagnet ring 57 is embedded and arranged on the inner bottom surface of the working barrel 1, and the bottom surface of the pontoon 56 is embedded and provided with a magnetic ring 58 magnetically attracted with the electromagnet ring 57.

After the mother liquor falls into the working barrel 1 from the recovery barrel 31, when the mother liquor level is not high, the electromagnetic ring 57 limits the pontoon 56 through the magnetic ring 58, at this time, the buoyancy force received by the buoyancy tube 52 is small, the sealing guide valve head 54 at the lower end of the buoyancy tube 52 is inserted into the liquid discharge tube 8, so that the mother liquor in the working barrel 1 cannot be discharged, and when the water pump 61 repeatedly pumps the mother liquor in the working barrel 1 to filter, unheated mother liquor is also conveyed to the recovery unit 3 to filter (note that, an electromagnetic valve can be installed on the auxiliary tube 63, and the electromagnetic valve is opened when the mother liquor in the working barrel 1 is accumulated to a certain amount, so that the gas in the working barrel 1, rather than the mother liquor, is sucked by the auxiliary tube 63, and the pressure of the lower side of the working barrel 1 is reduced, so that the condition of overcoming the suction force from the lower side is also required when the squeeze plate 310 is lifted up).

With continuous filtration of mother liquor, the capacity of the mother liquor accumulated in the bottom of the working barrel 1 is gradually increased until the liquid level of the mother liquor rises to the position of the floating plate 53, the floating pipe 52 is driven to rise by the buoyancy of the floating plate 53, the pontoon 56 is driven to rise by the rising force of the floating pipe 52, so that the magnetic ring 58 is separated from the electromagnet ring 57, the magnetic force between the magnetic ring 58 and the electromagnet ring 57 is smaller than the buoyancy of the floating plate 53, the floating pipe 52 slides in the limiting plate 51, the limiting plate 51 limits the floating pipe 52, the sealing guide valve head 54 at the upper end of the floating pipe 52 is inserted into the drain port 32, the mother liquor in the recovery barrel 31 cannot be discharged into the working barrel 1 and accumulated below the inside of the recovery barrel 31 (note that an electromagnet can be arranged at the bottom of the recovery barrel 31), a plurality of thin iron sheets are arranged on the floating plate 53, when the floating pipe 52 rises until the sealing guide valve head 54 at the upper end of the floating pipe 52 is inserted close to the drain port 32, the suction force of the electromagnet can assist the thin iron sheets by the attraction force of the electromagnet to the iron sheets, the sealing guide valve head 54 at the upper end of the iron sheets is inserted into the limit plate 52, the drain port 32 can be prevented from being contacted with the drain port 32, and the drain water can not be discharged into the drain port 32, and the drain water can be prevented from flowing into the drain port 32 by the drain port by the lower than the suction force of the electromagnet plate 53, and the drain port can be prevented from being accumulated in the drain port to the drain port by the lower than the water.

Along with the sealed guide valve head 54 of floating tube 52 lower extreme removes from fluid-discharge tube 8, can make the mother liquor in the work drum 1 follow fluid-discharge tube 8 and discharge completely, closes the electro-magnet that the recovery bucket 31 bottom set up when the mother liquor in the work drum 1, and flotation pontoon 56 descends gradually, and floating tube 52 closes fluid-discharge tube 8 through gravity decline to open drain 32 and water pump 61 and continue to carry the mother liquor in to work drum 1, carry out automatic discharge to the mother liquor of multiple filtration, guarantee the mother liquor volume of discharging after the filtration, facilitate the use.

Specifically, the floating valve unit 5 further includes a sealing baffle ring 55, the sealing baffle ring 55 is installed and connected to the outer wall of the lower end of the floating tube 52, the sealing baffle ring 55, the sealing guide valve head 54 and the floating plate 53 are integrally formed, and the floating tube 52, the sealing baffle ring 55, the sealing guide valve head 54 and the floating plate 53 are hollow structures, and the pontoon 56 is slidably connected to the outer wall of the floating tube 52.

When the floating pipe 52 ascends, the floating barrel 56 is pulled by the sealing baffle ring 55, the magnetic ring 58 is separated from the electromagnetic ring 57, when the floating barrel 56 floats, the floating pipe 52 is supported by the limiting ring 59 so as not to descend, after the sealing guide valve head 54 at the upper end of the floating pipe 52 is inserted into the liquid outlet 32, the floating plate 53 is attached to the bottom surface of the recovery barrel 31, the sealing performance is improved, after the sealing guide valve head 54 at the lower end of the floating pipe 52 is inserted into the liquid outlet 8, the sealing baffle ring 55 is attached to the inner bottom surface of the working barrel 1, the sealing performance on the liquid outlet 8 is improved, and the use effect is improved.

Specifically, the floating valve unit 5 further includes an electric inlet wire 510, a conductive wire 511 and a connecting rod 513, wherein one end of the connecting rod 513 is fixedly connected with the outer wall of the upper end of the floating tube 52, one end of the electric inlet wire 510 is inserted into the working barrel 1, the other end of the electric inlet wire is electrically connected with an external circuit, one end of the conductive wire 511 is communicated with the electromagnet ring 57, the other end of the conductive wire 511 is inserted out of the working barrel 1, the conductive wire 511 supplies power to the water pump 61, the adjacent ends of the electric inlet wire 510 and the conductive wire 511 are electrically connected with first electrode plates 512, and the upper end of the connecting rod 513 is fixedly connected with second electrode plates 514 corresponding to the two first electrode plates 512.

The electromagnet ring 57 is electrified through the electric connection of the electric inlet wire 510, the electric conducting wire 511, the first electrode plate 512 and the second electrode plate 514, so that magnetism is generated to magnetically attract the magnetic ring 58 to limit the pontoon 56; the external circuit transmits power along the power feeding wire 510, the power feeding wire 510 transmits power to the second electrode plate 514 through the first electrode plate 512 at the end part of the power feeding wire 510, the second electrode plate 514 transmits power to the conductive wire 511 through the first electrode plate 512 at the end part of the conductive wire 511, and the conductive wire 511 transmits power to the electromagnet ring 57, so that the electromagnet ring 57 is electrified to generate magnetic force; when the liquid level of the mother liquid contacts with the floating plate 53 and drives the floating plate 53 to rise, the floating plate 53 drives the floating tube 52 to rise, a certain gap exists between the sealing baffle ring 55 and the floating tube 56, so that the floating tube 56 can not block the rising of the sealing baffle ring 55, the floating tube 52 rises to drive the connecting rod 513 to rise, the connecting rod 513 drives the second electrode plate 514 to rise, the second electrode plate 514 is separated from the first electrode plate 512, the electromagnet ring 57 and the water pump 61 are powered off (i.e. the liquid discharge pipe 8 discharges liquid at the moment, the water pump 61 does not introduce liquid any more), the electromagnet ring 57 can not magnetically attract the magnetic ring 58, the floating tube 56 rises through the self buoyancy at the moment, the floating tube 52 is continuously driven to rise through the limiting ring 59 on the outer wall of the floating tube 52 until the sealing guide valve head 54 at the upper end of the floating tube 52 is inserted into the liquid discharge port 32, the water pump 61 does not convey the mother liquid into the recovery barrel 31, thereby avoiding the mother liquor after extrusion filtration in the recovery barrel 31 from generating downward pressure on the floating tube 52, the buoyancy of the floating tube 56 is larger than the sum of the weights of the floating tube 52, the sealing baffle ring 55, the sealing guide valve head 54, the floating plate 53, the connecting rod 513 and the second electrode plates 514, after the floating tube 52 descends, the second electrode plates 514 are contacted with the two first electrode plates 512 again, the electromagnet ring 57 is electrified so as to limit the magnetic ring 58, the water pump 61 is electrified to continuously extract the mother liquor in the recovery barrel 31, the limitation and the buoyancy of the floating tube 56 are controlled in the way of electrifying and de-electrifying the electromagnet ring 57, the magnetic force of the electromagnet ring 57 can be larger, the independent floating tube 52 can not drive the floating tube 56 to ascend, so that the overall stability and the accuracy of the operation mode are improved, the uncertainty is reduced, and the practicability is improved.

Specifically, the inner wall of the working barrel 1 is fixedly connected with a waterproof baffle ring 7, the lower end of the recovery barrel 31 is positioned in the waterproof baffle ring 7, one end of the connecting rod 513 penetrates through the waterproof baffle ring 7 and is in sliding connection with the waterproof baffle ring, and the second electrode plate 514 and the two first electrode plates 512 are positioned above the waterproof baffle ring 7; when the floating tube 52 drives to rise or descend, the connecting rod 513 is driven to slide with the waterproof baffle ring 7, the waterproof baffle ring 7 can shield the second electrode plate 514 and the two first electrode plates 512, the effect that water influences use is avoided or damage is caused, and practicality is improved.

Specifically, the liquid discharge pipe 8 has a horizontal S-shaped structure; as shown in fig. 4, the liquid discharge pipe 8 with the horizontal S-shaped structure can be provided as a siphon pipe, and mother liquid in the working barrel 1 can be rapidly discharged after the liquid discharge pipe 8 is opened by the siphon principle, so that the practicability is improved.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. The utility model provides a toluene recovery device, includes work drum (1), its characterized in that, support ring board (2) is installed to the upper end of work drum (1), the lower extreme intercommunication of work drum (1) has fluid-discharge tube (8), install infusion unit (6) and recovery unit (3) on support ring board (2), recovery unit (3) are including installing recovery drum (31) and active carbon piece (311) on support ring board (2), the up end fixedly connected with drain box (33) of recovery drum (31), feed liquor pipe (312) are installed to the outer wall of drain box (33), liquid outlet (36) with recovery drum (31) intercommunication are seted up to the inside bottom surface of drain box (33), the inside roof of drain box (33) rotates and is connected with reciprocating lead screw (34), the outer wall fixedly connected with of reciprocating lead screw (34) is located blade (35) in drain box (33), the lower extreme of reciprocating lead screw (34) wear to tub (31) and be connected with in-connection with drain box (310), the lateral wall (37) are connected with expansion link (310) are connected with each other, drain (37) are connected with expansion link (37), install in the installation mouth (313) be used for to the dismouting unit (4) of dismouting is carried out to active carbon piece (311), active carbon piece (311) are installed in dismouting unit (4), liquid outlet (32) have been seted up to the bottom surface of liquid guide box (33), the output and feed liquor pipe (312) intercommunication of infusion unit (6), infusion unit (6) carry mother liquor to feed liquor pipe (312), install in work barrel (1) and be used for carrying out floating valve unit (5) of switch to liquid outlet (32) and fluid-discharge tube (8), infusion unit (6) are including water pump (61), floating valve unit (5) are including limiting plate (51) and electromagnetic ring (57), the both ends of limiting plate (51) all with the inner wall fixed connection of work barrel (1), the middle part sliding connection of limiting plate (51) has floating tube (52), valve head (54) are all installed at the both ends of valve head (52), are located floating tube (52) guide valve head (54) upper end guide valve head (54) and fluid-discharge tube (52) are located floating tube (52) guide valve head (52) are located floating tube (52) upper end guide valve (52), the floating valve unit (5) further comprises a sealing baffle ring (55), the sealing baffle ring (55) is installed and connected with the lower end outer wall of the floating tube (52), the floating tube (56) is fixedly connected with a limiting ring (59) for blocking the floating tube (56), the electromagnetic ring (57) is embedded and arranged on the inner bottom surface of the working barrel (1), a magnetic ring (58) magnetically attracted with the electromagnetic ring (57) is embedded and arranged on the bottom surface of the floating tube (56), the sealing baffle ring (55) is installed and connected with the lower end outer wall of the floating tube (52), the floating tube (56) is in sliding connection with the outer wall of the floating tube (52), the floating valve unit (5) further comprises an electric inlet wire (510), a conducting wire (511) and a connecting rod (513), one end of the connecting rod (513) is fixedly connected with the upper end outer wall of the floating tube (52), one end of the electric inlet wire (510) is arranged in the working barrel (1) in a penetrating mode, the other end of the electric inlet wire is electrically connected with the electric circuit (511), the other end of the electric inlet wire (511) is electrically connected with the electric inlet wire (511) and the electric inlet wire (511) is electrically connected with the first end (511), the upper end of the connecting rod (513) is fixedly connected with second electrode plates (514) corresponding to the two first electrode plates (512), when the liquid level of mother liquor contacts with the floating plate (53) and drives the floating plate (53) to rise, the floating plate (53) drives the floating tube (52) to rise, a certain gap exists between the sealing baffle ring (55) and the floating tube (56), the floating tube (56) can not block the rising of the sealing baffle ring (55), the floating tube (52) rises to drive the connecting rod (513) to rise, the connecting rod (513) drives the second electrode plates (514) to rise, the second electrode plates (514) are separated from the first electrode plates (512), the electromagnetic ring (57) and the water pump (61) are powered off, at the moment, the liquid is discharged by the liquid discharge tube (8), the water pump (61) is not led into the liquid, the electromagnetic ring (57) can not magnetically absorb the magnetic ring (58), the floating tube (56) rises through the buoyancy of the floating tube (56) per se, the limiting ring (59) on the outer wall of the floating tube (52) can not block the rising of the sealing baffle ring (55), the floating tube (52) rises, the floating tube (52) is driven by the limiting ring (59) to rise, the floating tube (52) is driven by the floating tube (52) to rise, and the floating tube (52) continues to be led to the sealing baffle (52) to the sealing baffle plate (52), and the sealing end is continued to rise, and the floating tube (52) is sealed, and the floating tube (52) continues to be sealed, and the sealing valve head (52 is sealed, and sealed) The sum of the weights of the connecting rod (513) and the second electrode plate (514) causes the magnetic force of the electromagnet ring (57) to enable the floating tube (52) to be lifted independently, so that the floating tube (56) cannot be lifted.

2. The toluene recycling device according to claim 1, wherein the recycling unit (3) further comprises a liquid return pipe (39), the liquid return pipe (39) is of a C-shaped structure, two ends of the liquid return pipe (39) are communicated with the recycling bin (31), the liquid return pipe (39) is installed at the upper end of the recycling bin (31), and a yielding port (9) for yielding the liquid return pipe (39) is formed in the inner wall of the supporting annular plate (2).

3. Toluene recovery device according to claim 2, characterized in that the recovery unit (3) further comprises a connecting plate (38), the connecting plate (38) is fixedly connected with the lower end face of the limit rod (37), and the lower end of the reciprocating screw (34) is rotatably connected with the upper surface of the connecting plate (38).

4. The toluene recycling device according to claim 1, characterized in that the outer wall of the working barrel (1) is provided with a working opening (10) and a limiting chute (11) communicated with the working opening (10), the dismounting unit (4) comprises a sieve box (41) and a barrier strip (45), the barrier strip (45) is in sliding connection with the limiting chute (11), the sieve box (41) is movably inserted into the recycling barrel (31) through a mounting opening (313), the activated carbon block (311) is movably placed in the sieve box (41), the outer wall of the sieve box (41) is fixedly connected with a sealing plate (42), the sealing plate (42) is movably inserted into the mounting opening (313), the sealing plate (42) is hermetically blocked by the sealing plate (42), the outer wall of the sealing plate (42) is fixedly connected with a sealing frame (43), the sealing frame (43) is movably inserted into the working opening (10), the sealing frame (43) is movably inserted into the shielding opening (10), and the sealing frame (43) is fixedly connected with the sealing plate (43) by the sealing plate (43).

5. The toluene recovery device according to claim 1, wherein the water pump (61) is mounted on the upper surface of the supporting annular plate (2), the output end of the water pump (61) is communicated with the liquid inlet pipe (312), the input end of the water pump (61) is communicated with a mother liquor extraction pipe (62), the outer wall of the mother liquor extraction pipe (62) is communicated with an auxiliary pipe (63), and the other end of the auxiliary pipe (63) is penetrated into the lower end of the working barrel (1).

6. The toluene recovery device according to claim 1, wherein the floating pipe (52), the sealing baffle ring (55), the sealing guide valve head (54) and the floating plate (53) are integrally formed, and the interiors of the floating pipe (52), the sealing baffle ring (55), the sealing guide valve head (54) and the floating plate (53) are hollow structures.

7. The toluene recycling device according to claim 1, wherein a waterproof baffle ring (7) is fixedly connected to the inner wall of the working barrel (1), the lower end of the recycling barrel (31) is located in the waterproof baffle ring (7), one end of the connecting rod (513) penetrates through the waterproof baffle ring (7) and is in sliding connection with the waterproof baffle ring, and the second electrode plate (514) and the two first electrode plates (512) are located above the waterproof baffle ring (7).

8. A toluene recovery unit according to claim 1 characterised in that the drain pipe (8) is of a horizontal S-shaped configuration.