Equipment for treating wastewater containing reaction byproducts and method for preparing pencil glue

Abstract

The invention relates to the technical field of sewage treatment equipment, and discloses reaction byproduct-containing wastewater treatment equipment and a pencil glue preparation method.The reaction byproduct-containing wastewater treatment equipment comprises an air flotation machine and two chains which are symmetrically and rotationally connected to the top of the air flotation machine; the cleaning mechanism is fixedly connected to the sides, close to each other, of the chains; the blocking mechanism is fixedly connected to the bottom of the cleaning mechanism; the scraping mechanism is fixedly connected to the top of the purifying mechanism; the cleaning mechanism comprises fixed blocks fixedly connected to the sides, close to each other, of the chains, inclined grooves formed in the sides, away from the chains, of the fixed blocks, inclined rods slidably connected to the inner sides of the inclined grooves, and filter screens fixedly connected to the sides, away from the fixed blocks, of the inclined rods. By arranging the blocking mechanism, the device can go deep into water to clean scum below the water surface, the scum can be thoroughly removed, the scum is prevented from returning to the cleaned water area again around the filter screen through the bottom, and switching between scum cleaning and particulate matter filtering can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment equipment, and in particular to a wastewater treatment equipment containing reaction by-products and a method for preparing pencil glue. Background Art

[0002] Wastewater treatment equipment containing reaction by-products usually refers to a system that treats wastewater containing complex components and difficult-to-degrade organic matter generated during industrial production. This type of wastewater often comes from the chemical, pharmaceutical, dye, pesticide and other industries. Its by-products may include unreacted raw materials, intermediates, catalysts and harmful substances generated during the reaction. In the production process of pencil glue, wastewater containing reaction by-products will also be generated. Usually, professional equipment is required to purify the wastewater. An important part of the wastewater treatment process is to use a flotation machine to treat the wastewater. The flotation machine injects a large number of tiny bubbles into the wastewater, so that the bubbles combine with the suspended particles in the wastewater to form a bubble and solid particle complex with a density less than that of water. Under the action of buoyancy, it rises to the water surface to form scum, thereby achieving solid-liquid separation.

[0003] Traditional flotation machines are widely used in sewage purification processes, but due to the limitations of their structure and working principles, there are often some problems that cannot be ignored. For example, traditional flotation machines move on the surface of sewage through a scraper plate to skim off the scum on the water surface. However, since the bottom of the scraper plate cannot penetrate deep below the surface of the sewage, part of the scum will move down during the skimming process and bypass the scraper plate and re-suspend to the water surface, resulting in the scraper plate being unable to completely scrape off the scum, affecting the sewage treatment efficiency. In addition, the existing scraper plate has a single structure and can only clean the scum, but cannot filter the particulate pollutants contained in the sewage, which limits the scope of use and applicability of the equipment. After the existing flotation machine scraper plate skims off the scum, some of the scum will remain on the surface of the scraper plate. As the scraper plate circulates, the remaining scum will be brought back into the water, affecting the purification effect. Summary of the invention

[0004] In view of the problems of the prior art, the scraping effect is not good, the cleaning of the floating foam is not thorough enough, and the function is single and cannot be adjusted according to different needs.

[0005] Its purpose is to scrape off the foam more thoroughly and reduce the residue, while being able to adjust to different water qualities.

[0006] The technical solution of the present invention is a wastewater treatment device containing reaction by-products, comprising an air flotation machine, two chains symmetrically arranged on the top of the air flotation machine, a cleaning mechanism arranged on one side of the chains close to each other, a blocking mechanism arranged at the bottom of the cleaning mechanism, and a scraping mechanism arranged on the top of the purification mechanism;

[0007] The cleaning mechanism includes a fixed block arranged on the side where the chains are close to each other, an inclined slot arranged on the side where the fixed block is away from the chain, an inclined rod arranged on the inner side of the inclined slot, a filter arranged on the side where the inclined rod is away from the fixed block, a screw hole arranged on the inner side of the filter, a knob arranged on the inner side of the screw hole, a baffle arranged on the end of the knob away from the filter, two guide holes symmetrically arranged on both sides of the screw hole, a guide column arranged on the inner side of the guide hole, an end of the guide column away from the filter fixedly connected to the baffle, a spring arranged on the top of the fixed block, the top and bottom of the spring are respectively fixedly connected to the top of the inclined rod and the top of the fixed block, and an inclined plate arranged on the inner side of the air flotation machine;

[0008] The blocking mechanism includes a special-shaped hole opened at the bottom of the inclined rod, a bottom plate arranged inside the special-shaped hole, two driven wheels symmetrically arranged at both ends of the bottom plate, a driving wheel arranged on the side of the driven wheel away from the bottom plate, both ends of the driving wheel are rotatably connected to the special-shaped hole, a support shaft arranged on the side of the driving wheel away from the driven wheel, a roller arranged at the bottom end of the support shaft, and a tension spring arranged in the middle of the support shaft.

[0009] Furthermore, the scraping mechanism includes a limit block arranged at the bottom of the fixed block, a circular hole opened on the inner side of the limit block, a cross bar arranged on the inner side of the circular hole, two torsion springs symmetrically arranged at both ends of the cross bar, the two ends of the torsion spring are respectively fixedly connected to the circular hole and the cross bar, a soft scraper arranged on the side of the cross bar close to the filter, a stopper 1 arranged at the bottom of the limit block, and a stopper 2 arranged at both ends of the cross bar.

[0010] Furthermore, a plate-shaped protrusion is provided on the top of the inclined rod, and the cross-sections of the inclined rod and the inclined groove match.

[0011] Furthermore, the limiting block has an L-shaped appearance, and a circular groove is formed on the top of the inner wall of the circular hole.

[0012] Furthermore, both ends of the crossbar are cylindrical, and the length of the cylinder is the same as the length of the circular hole, and the top of the filter is a plate-like shape without mesh holes.

[0013] Furthermore, the width of the special-shaped hole matches the width of the support shaft, and the bottom plate has a mesh shape.

[0014] Furthermore, the end of the knob close to the filter is provided with a thread, and the end away from the filter is provided with an annular protrusion.

[0015] Furthermore, a through hole is provided on the inner side of the baffle, and the shape of the through hole matches the middle part of the knob.

[0016] Another object of the present invention is to provide a method for preparing pencil glue, which aims to produce finished pencil glue products by hot melting.

[0017] To achieve the above object, the present invention provides the following technical solution: a method for preparing pencil glue, comprising the following steps:

[0018] First, in the preparation process of pencil glue, it is usually necessary to prepare raw materials such as paraffin wax and stearic acid and mix them in a certain proportion;

[0019] Secondly, the mixed raw materials are placed in a heat-resistant container, heated by a heat source until completely melted, and stirred;

[0020] Finally, the melted mixture is gradually cooled until it solidifies into pencil glue. During the preparation of pencil glue, the raw materials fuse with each other and undergo chemical reactions, producing wastewater containing reaction by-products, which needs to be purified using an air flotation machine.

[0021] Furthermore, the preparation method includes mixing raw materials and heating the mixed raw materials to melt them. Cooling water is required during the curing process of the pencil glue, and flocculants such as polyacrylamide need to be added during the sewage treatment.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By setting up a cleaning mechanism, it is possible to go deep underwater to clean the scum below the water surface, and to completely remove the scum to prevent it from passing through the bottom and bypassing the filter net and returning to the cleaned waters. In addition, the cleaning mechanism has a dual function and can switch between cleaning scum and filtering particulate matter. This design not only ensures the cleaning effect of the water surface, but also avoids the re-suspension of scum, thereby improving the overall sewage treatment effect.

[0024] 2. By setting up a blocking mechanism, these substances can be intercepted in the process of skimming scum and particulate matter to prevent them from flowing back into the cleaned waters with the water flow. This design ensures the thoroughness of the cleaning operation, avoids the re-dispersion of pollutants, ensures the cleanliness of the water body, and improves the efficiency of sewage treatment.

[0025] 3. By setting up a scraping mechanism, the surface of the filter can be cleaned. This mechanism can scrape off the residual scum on the filter to prevent the accumulation of these scum and the possible re-pollution problems. Through such a cleaning process, the continuous and efficient operation of the filter is ensured, while the clean quality of the water body is maintained and the re-release of pollutants is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the air flotation machine of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall structure of the cleaning mechanism of the present invention;

[0028] Figure 3 An exploded view of the cleaning mechanism of the present invention;

[0029] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0031] Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0032] Figure 7 For the present invention Figure 3 Schematic diagram of the enlarged structure at D in the middle;

[0033] Figure 8 For the present invention Figure 3 Schematic diagram of the enlarged structure at E in the middle;

[0034] Fig. 9 It is a schematic diagram of the structure of the inclined rod and the special-shaped hole of the present invention;

[0035] Fig.10 It is a schematic diagram of the overall structure of the knob of the present invention;

[0036] Fig.11 It is a schematic diagram of the connection between the guide pillar and the baffle of the present invention;

[0037] Fig.12 For the present invention Fig.11 The enlarged structural diagram at F in the middle;

[0038] Fig.13 It is a schematic diagram of the connection between the fixing block and the limiting block of the present invention.

[0039] In the figure

[0040] 1. Flotation machine; 2. Chain; 3. Cleaning mechanism; 4. Blocking mechanism; 5. Scraping mechanism; 31. Fixed block; 32. Inclined groove; 33. Inclined rod; 34. Filter; 35. Screw hole; 36. Knob; 37. Baffle; 38. Guide hole; 39. Guide column; 310. Spring; 311. Inclined plate; 312. Through hole; 41. Special-shaped hole; 42. Bottom plate; 43. Driven wheel; 44. Driving wheel; 45. Support shaft; 46. Roller; 47. Tension spring; 51. Limit block; 52. Round hole; 53. Cross bar; 54. Torsion spring; 55. Soft scraper; 56. Block 1; 57. Block 2. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0042] Example 1, reference Figure 1-Figure 13 , which is the first embodiment of the present invention, provides a wastewater treatment device containing reaction by-products, including an air flotation machine 1, two chains 2 symmetrically rotatably connected to the top of the air flotation machine 1, and also including a cleaning mechanism 3 fixedly connected to the side of the chain 2 close to each other, a blocking mechanism 4 fixedly connected to the bottom of the cleaning mechanism 3, and a scraping mechanism 5 fixedly connected to the top of the purification mechanism; the cleaning mechanism 3 includes a fixed block 31 fixedly connected to the side of the chain 2 close to each other, an inclined groove 32 provided on the side of the fixed block 31 away from the chain 2, an inclined rod 33 slidably connected to the inner side of the inclined groove 32, a filter 34 fixedly connected to the side of the inclined rod 33 away from the fixed block 31, a screw hole 35 provided on the inner side of the filter 34, a knob 36 threadedly connected to the inner side of the screw hole 35, a baffle 37 rotatably connected to the end of the knob 36 away from the filter 34, and two guide holes 3 symmetrically provided on both sides of the screw hole 35. 8, a guide post 39 slidably connected to the inner side of the guide hole 38, the end of the guide post 39 away from the filter screen 34 is fixedly connected to the baffle 37, a spring 310 fixedly connected to the top of the fixed block 31, the top and bottom of the spring 310 are respectively fixedly connected to the top of the inclined rod 33 and the top of the fixed block 31, and a slanted plate 311 fixedly connected to the inner side of the flotation machine 1; the blocking mechanism 4 includes a special-shaped hole 41 opened at the bottom of the inclined rod 33, a bottom plate 42 rotatably connected to the inner side of the special-shaped hole 41, two driven wheels 43 symmetrically fixedly connected to the two ends of the bottom plate 42, a driving wheel 44 meshingly connected to the side of the driven wheel 43 away from the bottom plate 42, the two ends of the driving wheel 44 are rotatably connected to the special-shaped hole 41, a support shaft 45 fixedly connected to the side of the driving wheel 44 away from the driven wheel 43, a roller 46 rotatably connected to the bottom end of the support shaft 45, and a tension spring 47 fixedly connected to the middle part of the support shaft 45.

[0043] Specifically, when treating sewage, bubbles are released from the bottom of the flotation machine 1, and the bubbles combine with impurities in the wastewater to form scum floating on the water surface, and the chain 2 drives the fixed block 31 and the inclined rod 33 to move toward the direction close to the inclined plate 311, and the inclined rod 33 drives the filter screen 34 and the baffle 37 to move together. During the movement, the filter screen 34 and the baffle 37 push the scum on the water surface to move together, so that the scum is skimmed into the cavity of the flotation machine 1 for storing scum. When the inclined rod 33 is not in contact with the inclined plate 311, the bottom drives the filter screen 34 to penetrate into the water surface, and the scum below the water surface can be cleaned during the movement, so as to prevent the scum from returning to the cleaned water area through the bottom around the filter screen 34. In addition, the cleaning mechanism 3 has a dual function and can switch between cleaning scum and filtering particulate matter. This design not only ensures the cleaning effect of the water surface, but also avoids the re-suspension of scum, thereby improving the overall sewage treatment effect. After the inclined rod 33 contacts and moves with the inclined plate 311, it will rise under the pressure of the inclined plate 311 and drive the filter screen 34 to rise until the scum is lifted out of the water surface and skimmed off. After the inclined rod 33 contacts and moves with the inclined plate 311, the roller 46 will be displaced by the pressure of the inclined plate 311, and at the same time drive the support shaft 45 to move, the support shaft 45 drives the driving wheel 44 to rotate, and the driving wheel 44 drives the bottom plate 42 to rotate through the driven wheel 43 to keep it in contact with the filter screen. The bottom plate 42 is in a vertical state with the filter screen 34 rising, and can allow water to flow through through the mesh shape, while intercepting the scum to prevent it from falling back to the water surface. As the chain 2 drives the cleaning mechanism 3 to move, the bottom of the inclined rod 33 will move out of the range of the inclined plate 311, and the inclined rod 33 will be reset under the action of the spring 310, and the support shaft 45 will be reset under the action of the tension spring 47. The support shaft 45 drives the roller 46 and the bottom plate 42 to reset, and the baffle 37 can be driven to move by turning the knob 36. By controlling the movement of the baffle 37, the distance between the baffle 37 and the filter screen 34 can be controlled. When the baffle 37 and the filter screen 34 abut against each other, the water flow will not be able to The water can pass through the filter screen 34. In this state, the scum interception effect can be best achieved. When the distance between the filter screen 34 and the baffle plate 37 increases, the water flow can pass through the filter screen 34 and flow downward under the guidance of the baffle plate 37. In the process of the water flow passing through the filter screen 34, the suspended particles in the water flow will be intercepted by the filter screen 34. This state is suitable for purifying water bodies with more suspended particles. The blocking mechanism 4 can intercept these substances in the process of skimming scum and particles to prevent them from flowing back with the water flow to the cleaned water area. Such a design ensures the thoroughness of the cleaning operation, avoids the re-dispersion of pollutants, ensures the cleanliness of the water body, and improves the efficiency of sewage treatment.

[0044] Reference Figure 3-Figure 9The scraping mechanism 5 includes a limit block 51 fixedly connected to the bottom of the fixed block 31, a circular hole 52 opened on the inner side of the limit block 51, a cross bar 53 rotatably connected to the inner side of the circular hole 52, two torsion springs 54 symmetrically fixedly connected to the two ends of the cross bar 53, the two ends of the torsion spring 54 are respectively fixedly connected to the circular hole 52 and the cross bar 53, a soft scraper 55 fixedly connected to the side of the cross bar 53 close to the filter screen 34, a stopper 56 fixedly connected to the bottom of the limit block 51, and a stopper 57 fixedly connected to the two ends of the cross bar 53.

[0045] Specifically, the soft scraper 55 is driven to rotate while the filter 34 moves upward. The soft scraper 55 stops rotating after rotating to the maximum angle. When the filter 34 continues to move upward, the soft scraper 55 will clean the surface of the filter 34 to prevent scum from remaining on the surface of the filter 34. During the resetting process of the filter 34, the force applied to the soft scraper 55 will be released, and the soft scraper 55 will rebound and reset under the action of the torsion spring 54, and throw away the scum attached to itself. The scraping mechanism 5 can clean the surface of the filter 34. This mechanism can scrape off the residual scum on the filter 34 to prevent the scum from accumulating and possibly causing re-pollution. Through such a cleaning process, the continuous and efficient operation of the filter 34 is ensured, while also maintaining the cleanliness quality of the water body and avoiding the re-release of pollutants.

[0046] Reference Fig. 9 and Fig.13 A plate-shaped protrusion is provided on the top of the inclined rod 33, and the cross-sections of the inclined rod 33 and the inclined groove 32 match.

[0047] Specifically, the plate-like protrusion on the top of the inclined rod 33 can be connected to the top end of the spring 310 , the inclined rod 33 can cooperate with the inclined groove 32 , and the inclined groove 32 can constrain the moving direction of the inclined rod 33 .

[0048] Example 2, reference Fig.13 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that the limiting block 51 is L-shaped, and a circular groove is formed on the top of the inner wall of the circular hole 52.

[0049] Specifically, the circular groove on the inner wall of the circular hole 52 can cooperate with the torsion spring 54 to fix the torsion spring 54. The torsion spring 54 can store force while the cross bar 53 rotates and reset the cross bar 53.

[0050] Reference Figure 3 and Figure 6 The two ends of the cross bar 53 are cylindrical, and the length of the cylinder is the same as the length of the circular hole 52, and the top of the filter screen 34 is a plate without mesh.

[0051] Specifically, the crossbar 53 cooperates with the circular hole 52 through the cylindrical shapes at both ends, the plate-shaped top of the filter screen 34 can push the scum on the water surface, and the mesh portion of the filter screen 34 can filter the suspended matter under the water surface.

[0052] Reference Figure 7 and Fig.13 The width of the special-shaped hole 41 matches the width of the support shaft 45, and the bottom plate 42 has a mesh shape.

[0053] Specifically, the special-shaped hole 41 cooperates with the support shaft 45 and constrains the freedom of movement of the support shaft 45. The mesh bottom plate 42 can allow water to flow through and intercept scum and granular impurities.

[0054] Reference Fig.10 The knob 36 has a thread at one end close to the filter 34 and an annular protrusion at the other end away from the filter 34 .

[0055] Specifically, the knob 36 is connected to the screw hole 35 through a thread, and is connected to the baffle 37 through an annular protrusion. When the knob 36 is rotated, it can drive the baffle 37 to move, thereby adjusting the distance between the baffle 37 and the filter 34.

[0056] Reference Fig.12 A through hole 312 is opened on the inner side of the baffle 37 , and the shape of the through hole 312 matches the middle part of the knob 36 .

[0057] Specifically, the baffle 37 is connected to the knob 36 via the through hole 312 , and the through hole 312 can accommodate the knob 36 to rotate inside.

[0058] Example 3, reference Figure 1-Figure 13 , as a third embodiment of the present invention, provides a method for preparing pencil glue, comprising the following steps:

[0059] S1. First, in the preparation process of pencil glue, it is usually necessary to prepare raw materials such as paraffin wax and stearic acid and mix them in a certain proportion.

[0060] S2, then putting the mixed raw materials into a heat-resistant container, heating them by a heat source until they are completely melted, and stirring them.

[0061] S3, finally, the melted mixture is gradually cooled until it solidifies into pencil glue. During the preparation process of pencil glue, the raw materials fuse with each other and undergo chemical reactions, producing wastewater containing reaction by-products, which needs to be purified by using an air flotation machine 1.

[0062] S4, the preparation method includes mixing the raw materials and heating the mixed raw materials to melt them. Cooling water is required during the solidification process of the pencil glue, and flocculants such as polyacrylamide need to be added during sewage treatment.

[0063] Comprehensive embodiment 1-2, the working principle of the present invention is that when the flotation machine 1 treats sewage, it will release tiny bubbles, and the bubbles will combine with the suspended matter in the water to form scum floating on the water surface, and the fixed block 31 will be driven to move by the rotating chain 2. The fixed block 31 moves and drives the inclined rod 33 matched with it to move. The inclined rod 33 drives the filter screen 34 to move together. The filter screen 34 moves and drives the baffle 37 to move through the knob 36. By controlling the filter screen 34 to move in the direction of the inclined plate 311, the filter screen 34 pushes the scum to move in the same direction while moving, and pushes the scum into the cavity of the flotation machine 1 that accommodates the scum. After the moving rod moves a certain distance toward the inclined plate 311, the bottom end will contact the inclined plate 311 and be squeezed by the inclined plate 311 after contact. The inclined rod 33 moves upward while driving the filter screen 34 upward, and the filter screen 34 moves upward to lift the scum out of the water. After the inclined rod 33 contacts the inclined plate 311, the roller 46 will also be squeezed by the inclined plate 311 to produce displacement. The roller 46 drives the support shaft 45 to move while moving. The movement of the support shaft 45 causes the tension spring 47 to store force and drive the driving wheel 44 to rotate. The driving wheel 44 drives the driven wheel 43 to rotate, and the driven wheel 43 drives the bottom plate 42 to rotate until the bottom plate 42 rotates to the state where the filter screen 34 is vertical. After the filter screen 34 gradually moves out of the water, the mesh bottom plate 42 can allow water to pass through and intercept the scum. The filter screen 34 moves upward while driving the soft scraper 55 to rotate. The soft scraper 55 rotates while driving the cross bar 53 The cross bar 53 makes the torsion spring 54 store force, and the soft scraper 55 stops rotating after rotating to the maximum angle. At this time, the filter screen 34 continues to move up. After the soft scraper 55 stops rotating, the scum on the upper surface of the filter screen 34 is scraped off. After the inclined rod 33 moves out of the range of the inclined plate 311 with the rack, the inclined rod 33 is squeezed and contacted, and the spring 310 will drive the inclined rod 33 to reset, and the inclined rod 33 drives the filter screen 34 to reset together. During the resetting process of the filter screen 34, the contact force applied to the soft scraper 55, at this time, the torsion spring 54 drives the soft scraper 55 to reset through the cross bar 53, and the soft scraper 55 resets while throwing the scum attached to itself to the cavity of the air flotation machine 1 for storing scum. After the roller 46 is no longer squeezed by the inclined plate 311, the tension spring 47 drives the roller 46 through the support shaft 45 The driving wheel 44 is reset, and the driving wheel 44 drives the bottom plate 42 to reset through the driven wheel 43. After the bottom plate 42 is reset, it contacts the scum and blocks it, so that the scum can fall along the upper surface of the filter screen 34. When the knob 36 is rotated, it can move along the axis of the through hole 312, and drive the baffle 37 to move together while moving. The baffle 37 is constrained by the guide column 39 and can only move along the axis of the through hole 312. When there are many suspended particles in the sewage, the baffle 37 is controlled by the knob 36 to move away from the filter screen 34. When the filter screen 34 is in use, it will filter the water flow passing through the mesh, so that the suspended particles in the water are intercepted. When there are many scum in the sewage, the baffle 37 is pressed against the filter screen 34, and the water flow will not be able to pass through the mesh of the filter screen 34.Reduce the amount of scum passing through the mesh.

[0064] It should be noted that 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wastewater treatment device containing reaction by-products, comprising an air flotation machine (1), two chains (2) symmetrically arranged on the top of the air flotation machine (1), characterized in that: It also includes a cleaning mechanism (3) arranged on one side of the chains (2) close to each other, a blocking mechanism (4) arranged at the bottom of the cleaning mechanism (3), and a scraping mechanism (5) arranged at the top of the cleaning mechanism; The cleaning mechanism (3) comprises a fixed block (31) arranged on a side where the chains (2) are close to each other, an inclined groove (32) provided on a side where the fixed block (31) is away from the chain (2), an inclined rod (33) provided on the inner side of the inclined groove (32), a filter screen (34) provided on a side where the inclined rod (33) is away from the fixed block (31), a screw hole (35) provided on the inner side of the filter screen (34), a knob (36) provided on the inner side of the screw hole (35), and a knob (36) provided on the end of the knob (36) away from the filter screen (34). a baffle (37), two guide holes (38) symmetrically arranged on both sides of the screw hole (35), a guide post (39) arranged inside the guide hole (38), one end of the guide post (39) away from the filter screen (34) being fixedly connected to the baffle (37), a spring (310) arranged on the top of the fixed block (31), the top and bottom of the spring (310) being fixedly connected to the top of the inclined rod (33) and the top of the fixed block (31) respectively, and an inclined plate (311) arranged inside the air flotation machine (1); The blocking mechanism (4) comprises a special-shaped hole (41) formed at the bottom of the inclined rod (33), a bottom plate (42) arranged inside the special-shaped hole (41), two driven wheels (43) symmetrically arranged at two ends of the bottom plate (42), a driving wheel (44) arranged at a side of the driven wheel (43) away from the bottom plate (42), two ends of the driving wheel (44) being rotatably connected to the special-shaped hole (41), a support shaft (45) arranged at a side of the driving wheel (44) away from the driven wheel (43), a roller (46) arranged at the bottom end of the support shaft (45), and a tension spring (47) arranged at the middle of the support shaft (45).

2. The wastewater treatment equipment containing reaction by-products according to claim 1, characterized in that The scraping mechanism (5) comprises a limit block (51) arranged at the bottom of the fixed block (31), a circular hole (52) provided inside the limit block (51), a cross bar (53) arranged inside the circular hole (52), two torsion springs (54) symmetrically arranged at both ends of the cross bar (53), the two ends of the torsion spring (54) being respectively fixedly connected to the circular hole (52) and the cross bar (53), a soft scraper (55) arranged on a side of the cross bar (53) close to the filter screen (34), a first stopper (56) arranged at the bottom of the limit block (51), and a second stopper (57) arranged at both ends of the cross bar (53).

3. The wastewater treatment equipment containing reaction by-products according to claim 1, characterized in that A plate-shaped protrusion is provided on the top of the inclined rod (33), and the cross sections of the inclined rod (33) and the inclined groove (32) match each other.

4. The wastewater treatment equipment containing reaction by-products according to claim 2, characterized in that The limiting block (51) is L-shaped in appearance, and a circular groove is formed on the top of the inner wall of the circular hole (52).

5. The wastewater treatment equipment containing reaction by-products according to claim 2, characterized in that Both ends of the crossbar (53) are cylindrical, and the length of the cylinder is the same as the length of the circular hole (52). The top of the filter screen (34) is a plate-like shape without mesh holes.

6. The wastewater treatment equipment containing reaction by-products according to claim 1, characterized in that The width of the special-shaped hole (41) matches the width of the support shaft (45), and the bottom plate (42) has a mesh shape.

7. The wastewater treatment equipment containing reaction by-products according to claim 1, characterized in that The knob (36) has a thread at one end close to the filter (34) and an annular protrusion at one end away from the filter (34).

8. The wastewater treatment equipment containing reaction by-products according to claim 1, characterized in that A through hole (312) is provided on the inner side of the baffle (37), and the shape of the through hole (312) matches the middle part of the knob (36).

9. A method for preparing pencil glue, applied to a wastewater treatment device containing reaction by-products as claimed in any one of claims 1 to 8, characterized in that The method comprises the following steps: firstly, in the preparation process of pencil glue, raw materials such as paraffin wax and stearic acid are usually prepared and mixed in a certain proportion; Secondly, the mixed raw materials are placed in a heat-resistant container, heated by a heat source until completely melted, and stirred; Finally, the melted mixture is gradually cooled until it solidifies into pencil glue. During the preparation process of pencil glue, the raw materials fuse with each other and undergo chemical reactions, producing wastewater containing reaction by-products. The wastewater needs to be purified using an air flotation machine (1).

10. The method for preparing pencil glue according to claim 9, characterized in that The preparation method comprises mixing raw materials and heating the mixed raw materials to melt them. Cooling water is required in the curing process of the pencil glue, and flocculants such as polyacrylamide need to be added during the sewage treatment.

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