A waste recovery device for a curing agent production

Abstract

The application discloses a waste recovery device for curing agent production, which comprises a recovery barrel and a filtering mechanism, the top of the recovery barrel is provided with an inlet, the filtering mechanism comprises a cylinder with a filtering opening at the bottom, a plurality of filtering assemblies arranged in layers, and a lifting assembly. The application has the following advantages and effects: when the curing agent waste is poured into the recovery barrel, the curing agent waste is subjected to multiple filtering through the plurality of filtering assemblies to realize recovery; when the filtering efficiency is affected by the attachment of a large number of impurity particles on the filtering assemblies, the uppermost filtering assembly is lifted upward through the lifting assembly, thereby ensuring the filtering efficiency; the lifting assembly can be lifted multiple times to ensure the filtering efficiency due to the arrangement of the plurality of filtering assemblies; meanwhile, the arrangement of the plurality of filtering assemblies enables the curing agent waste entering the cylinder to first gather in the space around the cylinder and the filtering assemblies, so that the impurity particles are deposited under the action of gravity, thereby extending the service life of the filtering assemblies.

Description

Technical Field

[0001] The present invention relates to the technical field of waste recycling, in particular to a waste recycling device for curing agent production. Background Art

[0002] Curing agents, also known as hardeners, curing agents, or setting agents, are substances or mixtures that accelerate or control the curing reaction. For example, resin curing is a process in which thermosetting resins undergo irreversible changes through chemical reactions such as condensation, ring closure, addition, or catalysis. Curing is accomplished by adding a curing agent. Curing agents are essential additives for adhesives, coatings, and castables; otherwise, epoxy resins will not cure.

[0003] With the development of green environmental protection, existing curing agent production also involves the recycling of unused curing agent waste. Through recycling, filtration, testing, and other methods, qualified curing agent is refilled for use in applications with relatively low performance indicators. Existing waste recycling equipment includes a recycling barrel and a filter screen installed at the feed inlet of the recycling barrel. By filtering the curing agent recovered in the recycling barrel, it can screen out impurities such as particles that may fall from the curing agent waste. However, this filtering method is relatively conventional and has poor filtering effect on impurities in the curing agent waste. Summary of the Invention

[0004] The purpose of the present invention is to provide a waste recovery device for curing agent production, which has the function of improving the filtering effect of curing agent waste.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a waste recycling device for curing agent production, comprising a recycling barrel, a filtering mechanism arranged in the recycling barrel and capable of filtering the curing agent waste entering from the top of the recycling barrel, a feed port being provided at the top of the recycling barrel, the filtering mechanism comprising a cylinder body having a filter port at the bottom and capable of receiving the curing agent waste from the feed port, a plurality of filter components stacked at corresponding filter ports of the cylinder body and detachably connected to each other, and a lifting component arranged on the cylinder body and capable of lifting the filter component of any height upward after being disassembled.

[0006] By adopting the above technical solution, when the curing agent waste is poured into the recycling barrel, the curing agent waste is recycled after multiple filtration through multiple filter components; and when a large number of impurity particles attached to the filter component affect the filtration efficiency, the uppermost filter component is lifted up by the lifting component to ensure the filtration efficiency. Since multiple filter components are provided, the lifting component can be lifted multiple times to ensure the filtration efficiency; at the same time, the provision of multiple filter components makes the curing agent waste entering the barrel first gather in the space around the barrel and the filter component, so that the impurity particles are precipitated under the action of gravity, thereby extending the service life of the filter component.

[0007] The filter assembly of the present invention is further configured as follows: a limit column extending in a vertical upward direction is provided in the middle of the bottom of the cylinder body, and the filter assembly includes a limit frame telescopically arranged on the limit column, an annular rubber gasket arranged on the lower surface of the limit frame, and a filter cotton plate arranged in the limit frame, the limit frame of the filter assembly at the bottom being fixed to the cylinder body by screws and covering the filter port. The circumferential side of the limit frame is provided with a mounting groove, the lower surface of the mounting groove is provided with an arc hole penetrating into the lower surface of the limit frame, one end of the arc hole is provided with a through hole penetrating the lower surface of the limit frame, the upper surface of the limit frame is provided with an arc groove corresponding to the arc hole, a sliding block is slidably connected in the arc groove, a limiting shaft is provided on the sliding block, a limiting ball is provided on the upper end of the limiting shaft, one end of the sliding block and the arc groove is provided with a first compression spring that drives the sliding block to press against one end of the arc groove, and when two adjacent filter assemblies are installed, the elasticity of the first compression spring in the lower limit frame is first overcome. The force causes the limit ball to correspond to the through hole and penetrate into the installation groove, and then under the reset action of the first compression spring, the limit shaft moves along the arc hole to the end of the arc hole, so that the limit ball is pressed against both sides of the upper surface of the arc hole; the lifting assembly includes a lifting rod telescopically arranged on the inside of the cylinder, a second compression spring arranged between the lifting rod and the cylinder and driving the lifting rod to move upward, and a lifting plate arranged under the lifting rod. When the elastic force of the second compression spring is overcome so that the lifting plate corresponds to the installation groove of the limit frame that needs to be lifted upward, the lifting rod is rotated so that the lifting plate rotates and embeds into the installation groove and drives the limit ball to move to the position of the corresponding through hole, and then drives the limit frame to be lifted upward under the reset action of the second compression spring; when the lifting plate moves downward and embeds in the second to last limit frame, the second compression spring drives multiple limit frames to separate from the bottom limit frame by 5 cm; an operation window for operating the lifting rod is provided at the upper surface of the recycling bin corresponding to the cylinder.

[0008] By adopting the above technical solution, when the upper and lower filter assemblies are installed, the elastic force of the first compression spring in the lower limit frame is first overcome, so that the limit ball corresponds to the through hole and penetrates into the installation groove, and then under the reset action of the first compression spring, the limit shaft moves along the arc hole to the end of the arc hole, so that the limit ball is pressed against the two sides of the upper surface of the arc hole, so that the upper and lower filter assemblies are installed together, and finally multiple filter assemblies are sleeved on the limit column, and the lowermost filter assembly is fixed to the bottom of the cylinder, and finally the installation of multiple filter assemblies is completed; when the lifting assembly lifts a certain filter assembly upward, the elastic force of the second compression spring is first overcome to make the lifting piece correspond to the installation groove of the limit frame that needs to be lifted upward, and then the lifting rod is rotated to make the lifting piece rotate and embed into the installation groove and drive the limit ball to move to the position of the corresponding through hole, and then under the reset action of the second compression spring, the limit frame is driven to lift upward, thereby completing the upward lifting of the filter assembly to ensure the filtration efficiency of the filter assembly.

[0009] The present invention is further configured as follows: a limit assembly for limiting the rotation angle of the lifting rod is provided between the cylinder and the lifting rod, the limit assembly includes a limit seat provided on the inner wall of the cylinder and extending in the vertical direction and having a limit groove with the center of the circle on the center line of the lifting rod, and a limit strip provided on the circumference of the lifting rod and one end embedded in the limit groove; when the limit strip is at one end of the limit groove, the lifting plate just drives the limit ball to move to the position of the corresponding through hole; when the limit strip is at the other end of the limit groove, the lifting plate disengages from the mounting groove.

[0010] By adopting the above technical solution, when the limit strip is at one end of the limit slot, the lifting plate just drives the limit ball to move to the position of the corresponding through hole, thereby facilitating the upward lifting of the filter assembly; when the limit strip is at the other end of the limit slot, the lifting plate is separated from the mounting slot, thereby avoiding interference with the filter assembly when adjusting the height of the lifting plate; at the same time, the center of the limit slot in the limit seat is on the center line of the lifting rod, and one end of the limit strip is embedded in the limit slot, which can achieve tight support for the lifting rod, thereby improving the stability of the lifting rod during use.

[0011] The present invention is further configured as follows: a positioning groove is provided on the upper surface of the mounting groove, and when the lifting piece just drives the limiting ball to move to the position corresponding to the through hole and resets the first spring, the lifting piece moves upward and is partially embedded in the positioning groove, and in the process of the lifting piece being embedded in the positioning groove, the lifting piece maintains the state of driving the limiting ball to move to the position corresponding to the through hole.

[0012] By adopting the above technical solution, after the lifting piece of the lifting assembly lifts the corresponding filter assembly upward, the lifting piece is embedded in the positioning groove to prevent the lifting assembly from escaping from the installation groove after rotation.

[0013] The present invention is further configured as follows: the edges of the upper and lower surfaces of the lifting piece are provided with arc-shaped guide angles, and the upper end of the lifting rod is provided with a rocker arm for facilitating the rotation of the lifting rod.

[0014] By adopting the above technical solution, the setting of the arc-shaped guide angle makes it easy for the lifting piece to enter the installation groove, and the setting of the rocker arm makes it easy to rotate the lifting rod.

[0015] The present invention is further configured as follows: the inner ring of the cylinder and the circumference of the limit frame are spaced apart, a feed channel is provided between the feed port and the circumference of the cylinder, the lower surface height of the lowest filter assembly is the same as the height below the feed channel connecting to the cylinder, and the height of the highest filter assembly is the same as the height of the middle part of the feed channel connecting to the cylinder.

[0016] By adopting the above technical solution, a feed channel is provided to prevent the curing agent waste from falling onto the upper surface of the filter assembly. At this time, when the curing agent waste enters the cylinder and needs to be filtered through the filter assembly, the curing agent waste first overflows upward and is then discharged after being filtered through multiple filter assemblies. During this process, some particulate impurities are precipitated under the action of gravity, thereby extending the service life of the filter assembly.

[0017] The present invention is further configured as follows: an annular recessed portion protruding downward and surrounding the filter port is provided at the bottom of the cylinder, and the annular recessed portion corresponds to a portion spaced apart from the cylinder and the limiting frame.

[0018] By adopting the above technical solution, the provision of the annular recess allows some granular impurities to settle under the action of gravity and then gather.

[0019] The present invention is further configured as follows: a sewage pipe identical to the annular recess is provided on the periphery of the recovery barrel, the sewage pipe extends obliquely downward toward the recovery barrel, and a sewage valve is provided at one end of the sewage pipe outside the recovery barrel.

[0020] By adopting the above technical solution and arranging the sewage pipe and sewage valve, the curing agent waste (containing a large amount of precipitated particulate impurities) deposited in the annular recess can be discharged regularly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a partial structural schematic diagram of the present invention;

[0024] Figure 3 yes Figure 2 Schematic diagram of the structure after partial cutaway of the foundation;

[0025] Figure 4 It is a structural schematic diagram of the filter assembly in the present invention;

[0026] Figure 5 It is a schematic diagram of the structure after the two filter components of the present invention are installed;

[0027] Figure 6 yes Figure 3 Schematic diagram of the local structure on the foundation.

[0028] In the figure: 1. Recovery barrel; 11. Feed port; 12. Operation window; 2. Cylinder; 21. Limiting column; 22. Annular recess; 3. Filter assembly; 31. Limiting frame; 311. Mounting groove; 312. Arc hole; 313. Through hole; 314. Arc groove; 315. Sliding block; 316. Limiting shaft; 317. Limiting ball; 318. First compression spring; 319. Positioning groove; 32. Rubber gasket; 33. Filter cotton plate; 4. Lifting assembly; 41. Lifting rod; 42. Second compression spring; 43. Lifting sheet; 431. Arc guide angle; 44. Rocker arm; 5. Limiting assembly; 51. Limiting seat; 511. Limiting groove; 52. Limiting strip; 6. Feed channel; 7. Sewage pipe; 71. Sewage valve. DETAILED DESCRIPTION

[0029] The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0030] Example: A waste recycling device for curing agent production, such as Figures 1 to 3 As shown, the recycling system comprises a recycling barrel 1, a filtering mechanism disposed within the recycling barrel 1 and configured to filter the curing agent waste entering from the top of the recycling barrel 1. A feed port 11 is disposed at the top of the recycling barrel 1. The filtering mechanism comprises a barrel 2 having a filter port (not labeled) at the bottom thereof for receiving the curing agent waste from the feed port 11, a plurality of filter assemblies 3 stacked and detachably connected to the corresponding filter ports of the barrel 2, and a lifting assembly 4 disposed on the barrel 2 and configured to remove and lift the filter assemblies 3 at any height.

[0031] like Figures 3 to 5 As shown, a limiting column 21 extending in a vertical upward direction is provided in the middle of the bottom of the cylinder 2, and the filter assembly 3 includes a limiting frame 31 telescopically arranged on the limiting column 21, an annular rubber gasket 32 ​​arranged on the lower surface of the limiting frame 31, and a filter cotton plate 33 arranged in the limiting frame 31. The limiting frame 31 of the lowermost filter assembly 3 is fixed to the bottom of the cylinder 2 by screws and covers the filter port. A mounting groove 311 is provided on the circumferential side of the limit frame 31, and an arc-shaped hole 312 is provided on the lower surface of the mounting groove 311 and penetrates into the lower surface of the limit frame 31, and a through hole 313 is provided at one end of the arc-shaped hole 312 and penetrates the lower surface of the limit frame 31, and an arc-shaped groove 314 corresponding to the arc-shaped hole 312 is provided on the upper surface of the limit frame 31, and a sliding block 315 is slidably connected in the arc-shaped groove 314, and a limiting shaft 316 is provided on the sliding block 315, and a limiting ball 317 is provided on the upper end of the limiting shaft 316, and a first compression spring 318 is provided on the sliding block 315 and one end of the arc-shaped groove 314 to drive the sliding block 315 to press against one end of the arc-shaped groove 314. When two adjacent filter assemblies 3 are installed, the elastic force of the first compression spring 318 in the lower limit frame 31 is overcome first, so that the limit ball 317 corresponds to the through hole 313 and penetrates into the installation groove 311. Then, under the reset action of the first compression spring 318, the limit shaft 316 moves along the arc hole 312 to the end of the arc hole 312, so that the limit ball 317 is pressed against both sides of the upper surface of the arc hole 312.

[0032] like Figure 2 、 Figure 3 、 Figure 5 and Figure 6 As shown, the lifting assembly 4 includes a lifting rod 41 telescopically arranged on the inner side of the cylinder 2, a second compression spring 42 arranged between the lifting rod 41 and the cylinder 2 and driving the lifting rod 41 to move upward, and a lifting plate 43 arranged below the lifting rod 41. After overcoming the elastic force of the second compression spring 42 so that the lifting plate 43 corresponds to the mounting groove 311 of the limit frame 31 that needs to be lifted upward, the lifting rod 41 is rotated so that the lifting plate 43 rotates and then embeds into the mounting groove 311 and drives the limit ball 317 to move to the position corresponding to the through hole 313, and then drives the limit frame 31 to be lifted upward under the reset action of the second compression spring 42; when the lifting plate 43 moves downward and embeds into the second-to-last limit frame 31, the second compression spring 42 drives multiple limit frames 31 to separate from the bottom limit frame 31 by 5 cm. At the same time, an operation window 12 (see FIG. 1 ) for operating the lifting rod 41 is provided on the upper surface of the recycling barrel 1 corresponding to the cylinder 2. Figure 1 ).

[0033] like Figure 2 、 Figure 5 and Figure 6As shown, a limiting assembly 5 is provided between the cylinder 2 and the lifting rod 41 to limit the rotation angle of the lifting rod 41. The limiting assembly 5 includes a limiting seat 51 provided on the inner wall of the cylinder 2 and extending in the vertical direction and having a limiting groove 511 with its center on the center line of the lifting rod 41, and a limiting bar 52 provided on the circumference of the lifting rod 41 and with one end embedded in the limiting groove 511. When the limiting bar 52 is at one end of the limiting groove 511, the lifting plate 43 just drives the limiting ball 317 to move to the position corresponding to the through hole 313. When the limiting bar 52 is at the other end of the limiting groove 511, the lifting plate 43 is separated from the mounting groove 311. At the same time, the edges of the upper and lower surfaces of the lifting plate 43 are provided with arc-shaped guide angles 431, and the upper end of the lifting rod 41 is provided with a rocker arm 44 to facilitate the rotation of the lifting rod 41.

[0034] like Figure 5 and Figure 6 As shown, a positioning groove 319 is provided on the upper surface of the mounting groove 311. When the lifting piece 43 just drives the limiting ball 317 to move to the position corresponding to the through hole 313 and resets the first spring, the lifting piece 43 moves upward and is partially embedded in the positioning groove 319. In the process of the lifting piece 43 being embedded in the positioning groove 319, the lifting piece 43 maintains the state of driving the limiting ball 317 to move to the position corresponding to the through hole 313.

[0035] like Figure 2 and Figure 3 As shown, the inner ring of the cylinder 2 and the circumference of the limiting frame 31 are spaced apart, a feed channel 6 is provided between the feed port 11 and the circumference of the cylinder 2, the lower surface height of the lowest filter assembly 3 is the same as the height below the feed channel 6 where it connects to the cylinder 2, and the height of the uppermost filter assembly 3 is the same as the height of the middle part of the feed channel 6 where it connects to the cylinder 2. An annular recessed portion 22 is provided at the bottom of the cylinder 2, which protrudes downward and surrounds the filter port. The annular recessed portion 22 corresponds to the portion spaced apart from the cylinder 2 and the limiting frame 31. At the same time, a sewage pipe 7 identical to the annular recessed portion 22 is provided on the circumference of the recovery barrel 1. The sewage pipe 7 extends downwardly in an inclined direction close to the recovery barrel 1, and a sewage valve 71 is provided at one end of the sewage pipe 7 located outside the recovery barrel 1.

[0036] Implementation effect: When the curing agent waste is poured into the recycling barrel 1, the curing agent waste is recycled after multiple filtration through multiple filter components 3; and when a large number of impurity particles adhere to the filter component 3 and affect the filtration efficiency, the filter component 3 located at the top is lifted up by the lifting component 4, thereby ensuring the filtration efficiency. Since multiple filter components 3 are set, the lifting component 4 can be lifted multiple times to ensure the filtration efficiency; at the same time, the setting of multiple filter components 3 makes the curing agent waste entering the cylinder 2 first gather in the space around the cylinder 2 and the filter component 3, so that the impurity particles are precipitated under the action of gravity, thereby extending the service life of the filter component 3.

[0037] When the upper and lower filter assemblies 3 are installed, the elastic force of the first compression spring 318 in the lower limit frame 31 is first overcome, so that the limit ball 317 corresponds to the through hole 313 and penetrates into the installation groove 311. Then, under the reset action of the first compression spring 318, the limit shaft 316 moves along the arc hole 312 to the end of the arc hole 312, so that the limit ball 317 is pressed against both sides of the upper surface of the arc hole 312, thereby installing the upper and lower filter assemblies 3 together. Finally, multiple filter assemblies 3 are sleeved on the limit column 21, and the bottom filter assembly 3 is fixed to the cylinder 2 At the bottom, the installation of multiple filter components 3 is finally completed; when the lifting component 4 lifts a certain filter component 3 upward, it first overcomes the elastic force of the second compression spring 42 to make the lifting piece 43 correspond to the installation groove 311 of the limit frame 31 that needs to be lifted upward, and then rotates the lifting rod 41 to make the lifting piece 43 rotate and embed into the installation groove 311 and drive the limit ball 317 to move to the position of the corresponding through hole 313, and then drives the limit frame 31 to lift upward under the reset action of the second compression spring 42, thereby completing the lifting of the filter component 3 to ensure the filtration efficiency of the filter component 3.

[0038] When the limit bar 52 is at one end of the limit groove 511, the lifting piece 43 just drives the limit ball 317 to move to the position corresponding to the through hole 313, thereby facilitating the upward lifting of the filter assembly 3; when the limit bar 52 is at the other end of the limit groove 511, the lifting piece 43 is separated from the installation groove 311, thereby avoiding interference with the filter assembly 3 when adjusting the height of the lifting piece 43; at the same time, the center of the limit groove 511 in the limit seat 51 is on the center line of the lifting rod 41, and one end of the limit bar 52 is embedded in the limit groove 511, which can achieve tight support for the lifting rod 41, thereby improving the stability of the lifting rod 41 when in use.

[0039] The provision of feed channel 6 prevents curing agent waste from falling onto the upper surface of filter assembly 3. When curing agent waste enters cylinder 2 and needs to be filtered through filter assembly 3, it first overflows and then is discharged after being filtered through multiple filter assemblies 3. During this process, some particulate impurities settle under the action of gravity, thereby extending the service life of filter assembly 3. The provision of annular recess 22 allows some particulate impurities to settle and accumulate under the action of gravity. The provision of drain pipe 7 and drain valve 71 allows for the regular discharge of curing agent waste (containing a large amount of settled particulate impurities) settled in annular recess 22.

Claims

1. A waste recycling device for curing agent production, comprising a recycling barrel (1), and a filtering mechanism disposed in the recycling barrel (1) and configured to filter the curing agent waste entering from the top of the recycling barrel (1), characterized in that: The recycling barrel (1) is provided with a feed port (11) at the top, and the filtering mechanism comprises a barrel (2) having a filter port at the bottom for receiving the curing agent waste from the feed port (11), a plurality of filter assemblies (3) stacked and arranged at corresponding filter ports of the barrel (2) and detachably connected to each other, and a lifting assembly (4) provided on the barrel (2) and capable of lifting the filter assembly (3) at any height after removal. A limiting column (21) extending in a vertically upward direction is provided in the middle of the bottom of the cylinder (2), and the filter assembly (3) comprises a limiting frame (31) telescopically provided on the limiting column (21), an annular rubber gasket (32) provided on the lower surface of the limiting frame (31), and a filter cotton plate (33) provided in the limiting frame (31). The limiting frame (31) of the filter assembly (3) at the bottom is fixed to the bottom of the cylinder (2) by screws and covers the filter port. The peripheral side of the limiting frame (31) is provided with a mounting groove (311), and the lower surface of the mounting groove (311) is provided with a screw extending through the lower surface of the limiting frame (31). An arc-shaped hole (312) is provided at one end of the arc-shaped hole (312) with a through hole (313) penetrating the lower surface of the limiting frame (31), an arc-shaped groove (314) corresponding to the arc-shaped hole (312) is provided on the upper surface of the limiting frame (31), a sliding block (315) is slidably connected in the arc-shaped groove (314), a limiting shaft (316) is provided on the sliding block (315), a limiting ball (317) is provided at the upper end of the limiting shaft (316), and a first compression spring (318) is provided on the sliding block (315) and one end of the arc-shaped groove (314) to drive the sliding block (315) to press against one end of the arc-shaped groove (314); The lifting assembly (4) comprises a lifting rod (41) telescopically arranged inside the cylinder (2), a second compression spring (42) arranged between the lifting rod (41) and the cylinder (2) and driving the lifting rod (41) to move upward, and a lifting plate (43) arranged below the lifting rod (41); The inner ring of the cylinder (2) and the peripheral side of the limiting frame (31) are arranged at intervals, and a feed channel (6) is provided between the feed port (11) and the peripheral side of the cylinder (2).

2. The device for recycling waste from curing agent production according to claim 1, characterized in that: When two adjacent filter assemblies (3) are installed, the elastic force of the first compression spring (318) in the lower limiting frame (31) is first overcome, so that the limiting ball (317) corresponds to the through hole (313) and penetrates into the installation groove (311), and then under the reset action of the first compression spring (318), the limiting shaft (316) moves along the arc hole (312) to the end of the arc hole (312), so that the limiting ball (317) is pressed against both sides of the upper surface of the arc hole (312); After overcoming the elastic force of the second compression spring (42) so that the lifting piece (43) corresponds to the mounting groove (311) of the limit frame (31) that needs to be lifted upward, the lifting rod (41) is rotated to rotate the lifting piece (43) and then embed it into the mounting groove (311) and drive the limit ball (317) to move to the position of the corresponding through hole (313), and then the limit frame (31) is driven to lift upward under the reset action of the second compression spring (42); when the lifting piece (43) moves downward and embeds in the second to last limit frame (31), the second compression spring (42) drives the multiple limit frames (31) to separate from the bottom limit frame (31) by 5 cm; An operating window (12) for operating the lifting rod (41) is provided on the upper surface of the recovery barrel (1) at a position corresponding to the barrel (2).

3. The device for recycling waste from curing agent production according to claim 2, characterized in that: A limiting assembly (5) for limiting the rotation angle of the lifting rod (41) is provided between the cylinder (2) and the lifting rod (41). The limiting assembly (5) comprises a limiting seat (51) provided on the inner wall of the cylinder (2) and extending in the vertical direction and having a limiting groove (511) whose center is on the center line of the lifting rod (41), and a limiting strip (52) provided on the circumference of the lifting rod (41) and one end of which is embedded in the limiting groove (511). When the limiting strip (52) is at one end of the limiting groove (511), the lifting plate (43) just drives the limiting ball (317) to move to the position of the corresponding through hole (313). When the limiting strip (52) is at the other end of the limiting groove (511), the lifting plate (43) is separated from the mounting groove (311).

4. The device for recycling waste from curing agent production according to claim 3, characterized in that: A positioning groove (319) is provided on the upper surface of the mounting groove (311). When the lifting piece (43) just drives the limiting ball (317) to move to the position corresponding to the through hole (313) and resets the first spring, the lifting piece (43) moves upward and is partially embedded in the positioning groove (319). In the process of the lifting piece (43) being embedded in the positioning groove (319), the lifting piece (43) maintains the state of driving the limiting ball (317) to move to the position corresponding to the through hole (313).

5. The device for recycling waste from curing agent production according to claim 4, characterized in that: The edges of the upper and lower surfaces of the lifting piece (43) are provided with arc-shaped guide angles (431), and the upper end of the lifting rod (41) is provided with a rocker arm (44) for facilitating the rotation of the lifting rod (41).

6. The device for recycling waste from curing agent production according to claim 5, characterized in that: The height of the lower surface of the bottom filter assembly (3) is the same as the height below the feed channel (6) where it connects to the cylinder (2), and the height of the top filter assembly (3) is the same as the height of the middle portion of the feed channel (6) where it connects to the cylinder (2).

7. The device for recycling waste from curing agent production according to claim 6, characterized in that: The bottom of the cylinder (2) is provided with an annular recessed portion (22) protruding downward and surrounding the filter port, and the annular recessed portion (22) corresponds to the portion spaced apart between the cylinder (2) and the limiting frame (31).

8. The device for recycling waste from curing agent production according to claim 7, characterized in that: A sewage pipe (7) identical to the annular recess (22) is provided on the peripheral side of the recovery barrel (1), the sewage pipe (7) extending obliquely downward in a direction close to the recovery barrel (1), and a sewage valve (71) is provided at one end of the sewage pipe (7) located outside the recovery barrel (1).

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