Preparation process and device of n-propyl acetate slow-type ink diluent

Abstract

The present application relates to n-propyl acetate preparation technical field, specifically disclose a kind of n-propyl acetate slow type ink diluent preparation device, including fractionation mechanism, fractionation mechanism includes base support, fractionation mechanism is equipped with fractionation cylinder and water collecting cylinder on base support, condenser is fixedly connected between fractionation cylinder and water collecting cylinder, the top of fractionation cylinder is equipped with steam collection component, steam collection component includes protective cover and the moisture absorbing element in its interior.The n-propyl acetate slow type ink diluent preparation device provided by the present application evaporates water into water vapor by heating mechanism, water vapor is absorbed by moisture absorbing element during ascending, after moisture absorbing element captures a large amount of water vapor, water vapor contacts each other and starts to condense into water droplets quickly, then the part of moisture absorbing element that has absorbed a large amount of water vapor rotates to the top of water collecting cylinder, is extruded by extrusion plate, and water is extruded out, the water produced falls on water collecting cylinder, so that the rapid collection of water vapor is realized, and the recondensation of water vapor in the fractionation cylinder and the re-falling of water on the mixed solution are effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of n-propyl acetate preparation technology, specifically to a process and apparatus for preparing a slow-release n-propyl acetate ink thinner. Background Technology

[0002] Propyl acetate is a common solvent and diluent, widely used in products such as coatings, inks and adhesives. When used as an ink diluent, it can be used to adjust the viscosity and flowability of inks. To prepare propyl acetate, acetic acid and n-propanol are first mixed and heated to produce propyl acetate and water through an esterification reaction.

[0003] Since the propyl acetate obtained from the esterification reaction contains liquid water, it is necessary to remove the water. Common methods for water removal include physical adsorption and fractionation. However, these methods usually do not collect the water, resulting in a waste of water resources. In the fractionation method, even if a condensation mechanism is set up to collect water vapor, the water vapor will still re-condense into water droplets at the top of the reactor and return to the solution, which will prolong the fractionation time. Summary of the Invention

[0004] The purpose of this invention is to provide a process and apparatus for preparing n-propyl acetate slow-release ink thinner, so as to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A process for preparing a slow-release ink thinner containing n-propyl acetate, comprising the following steps: Reaction preparation: Add acetic acid and n-propanol to the reactor; during this process, control the reactor temperature and the ratio of reactants to ensure the smooth progress of the esterification reaction; Esterification reaction: Acetic acid and n-propanol are heated and reacted in the presence of a catalyst to produce n-propyl acetate and water; Dehydration treatment: The n-propyl acetate and water produced by the above reaction are placed in a fractionating cylinder, and the water is distilled off by the fractionating mechanism and collected. Storage: The final propyl acetate was stored in a sealed container under temperature and humidity control.

[0006] A device for preparing n-propyl acetate slow-release ink thinner includes a fractionation mechanism, the fractionation mechanism including a base support, a fractionation cylinder and a water collection cylinder arranged on the base support, a condenser tube fixedly connected between the fractionation cylinder and the water collection cylinder, and a vapor collection component arranged above the fractionation cylinder; The vapor collection component includes a protective cover and a moisture-absorbing element located inside it. The inner wall of the protective cover is detachably connected to the outer end of the fractionation cylinder and the water collection cylinder. A sealing plate is fixedly connected to the bottom of the protective cover. A pair of through holes are provided on the sealing plate. A waterproof layer is fixedly connected to the top surface of the moisture-absorbing element. The moisture-absorbing element is used to collect the evaporated water vapor and gather it into water droplets. The vapor collection component is provided with an intermittent drive component, which is used to intermittently rotate the moisture-absorbing component by a set angle. The water collection cylinder is equipped with a reciprocating squeezing component, which includes a squeezing plate. A top rod is fixedly connected to the bottom of the squeezing plate, and the top rod is responsible for reciprocating up and down, so that the squeezing plate repeatedly squeezes the moisture-absorbing component.

[0007] Furthermore, the intermittent drive component includes a driven shaft, the outer wall of which is fixedly connected to the inner wall of the moisture-absorbing component. The bottom end of the driven shaft extends movably through to the outer end of the base bracket. A driven wheel is fixedly sleeved on the outer end of the driven shaft. The driven wheel has multiple arc-shaped grooves and drive grooves, which are arranged in a ring at intervals. The bottom end of the base bracket is rotatably connected to a drive shaft. A deflector wheel and an anti-rotation wheel are fixedly sleeved on the outer end of the drive shaft. A deflector post is fixedly connected to the bottom of the deflector wheel. A receiving groove is provided on the outer end of the anti-rotation wheel. A speed reduction drive component is provided on the outer end of the drive shaft. The speed reduction drive component is responsible for continuously rotating the drive shaft.

[0008] Furthermore, the deceleration drive component includes a deceleration motor, the output end of which is fixedly connected to a drive shaft, the outer end of which is fixedly connected to a first gear, and the outer end of which is fixedly sleeved with a second gear, wherein the first gear and the second gear are meshed together.

[0009] Furthermore, the reciprocating extrusion component also includes a rotating shaft, with an eccentric wheel fixedly sleeved at the outer end of the rotating shaft. The bottom of the push rod extends movably through to the outer end of the base bracket, and a top plate is fixedly connected to the bottom of the push rod. The outer end of the eccentric wheel maintains a contact relationship with the top plate.

[0010] Furthermore, a first bevel gear is fixedly sleeved on the outer wall of the end of the rotating shaft away from the eccentric wheel, and a second bevel gear is fixedly sleeved on the outer wall of the bottom end of the drive shaft. The first bevel gear and the second bevel gear are meshed together. A support cylinder is movably sleeved on the outer end of the rotating shaft, and a support shaft is fixedly connected between the support cylinder and the base bracket.

[0011] Furthermore, the extrusion plate includes multiple extrusion rings, which are slidably connected to each other and have a stepped outer diameter. The extrusion ring near the middle is fixedly connected to the top rod. The multiple extrusion rings have an unfolded state and a folded state. When the multiple extrusion rings are in the folded state, they squeeze out the water droplets adsorbed by the moisture-absorbing element. When the multiple extrusion rings are in the unfolded state, they discharge the squeezed water.

[0012] Furthermore, the extrusion ring is provided with a first drainage hole and a second drainage hole. The first drainage hole is arranged at an angle, and the second drainage hole is arranged vertically. The first drainage hole and the second drainage hole are interconnected.

[0013] Furthermore, the outer end of the outermost extrusion ring is slidably connected to a limit ring, the outer end of the push rod is fixedly connected to a connecting rod, the outer end of the connecting rod is fixedly connected to a slider, the limit ring is provided with a guide groove, and the slider slides inside the guide groove.

[0014] Furthermore, an elastic element is fixedly connected inside the guide groove, and the top of the slider is fixedly connected to the elastic element.

[0015] In the above technical solution, the n-propyl acetate slow-release ink thinner preparation device provided by the present invention has the following beneficial effects: Water is evaporated into water vapor by a heating mechanism. As the water vapor rises, it is absorbed by the moisture-absorbing element. After capturing a large amount of water vapor, the water vapor comes into contact with each other and begins to condense rapidly into water droplets. Then, the part of the moisture-absorbing element that has absorbed a large amount of water vapor rotates to the top of the water collecting cylinder and is squeezed out by the extrusion plate. The resulting water falls onto the water collecting cylinder. At the same time, some water vapor also passes through the condenser tube and condenses into water droplets on the condenser tube, which also fall onto the water collecting cylinder. This achieves rapid collection of water vapor and effectively prevents water vapor from recondensing in the fractionation cylinder and falling back onto the mixture.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure. This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1This is a schematic diagram of the overall top view structure provided in Embodiment 2 of the present invention; Figure 2 This is a schematic diagram of the overall bottom view structure provided in Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the overall cross-sectional structure provided in Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the intermittent drive component structure provided in Embodiment 2 of the present invention; Figure 5 This is a schematic diagram of the deceleration drive component structure provided in Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the reciprocating extrusion component structure provided in Embodiment 2 of the present invention; Figure 7 This is a bottom view of the extrusion plate structure provided in Embodiment 3 of the present invention; Figure 8 For the present invention Figure 7 A magnified structural diagram at point A; Figure 9 This is a cross-sectional view of the extrusion plate provided in Embodiment 3 of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Base support; 2. Distillation cylinder; 3. Water collecting cylinder; 4. Condenser; 5. Vapor collecting component; 51. Protective cover; 52. Moisture-absorbing component; 53. Waterproof layer; 54. Sealing plate; 6. Intermittent drive component; 61. Driven shaft; 62. Driven wheel; 63. Arc groove; 64. Drive groove; 65. Drive shaft; 66. Actuating wheel; 67. Anti-rotation wheel; 68. Actuating column; 69. Receiving groove; 7. Reciprocating extrusion component; 71. Extrusion plate; 711. Extrusion ring; 712. First 713. Drain hole; 714. Second drain hole; 715. Limiting ring; 716. Connecting rod; 717. Slider; 718. Guide groove; 719. Elastic element; 710. Lifting ring; 72. Top rod; 73. Rotating shaft; 74. Eccentric wheel; 75. Top plate; 76. First bevel gear; 77. Second bevel gear; 78. Support cylinder; 79. Support shaft; 80. Reduction drive component; 81. Gear motor; 82. Drive shaft; 83. First gear; 84. Second gear; 9. Branch pipe. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0021] Example 1 A process for preparing a slow-release ink thinner containing n-propyl acetate, comprising the following steps: Reaction preparation: Add acetic acid and n-propanol to the reactor; during this process, it is necessary to control the reactor temperature and the ratio of reactants to ensure the smooth progress of the esterification reaction; Esterification reaction: Acetic acid and n-propanol are heated and reacted in the presence of a catalyst to produce n-propyl acetate and water; Dehydration treatment: The n-propyl acetate and water produced by the above reaction are placed in a fractionating cylinder, and the water is distilled off by the fractionating mechanism and collected. Storage: The final propyl acetate was stored in a sealed container under temperature and humidity control.

[0022] The obtained n-propyl acetate can be used as an ink thinner to adjust the viscosity and flowability of ink.

[0023] Example 2 Please see Figure 1-3 A device for preparing a slow-release ink thinner containing n-propyl acetate includes a fractionation mechanism. The fractionation mechanism includes a base support 1, on which a fractionation cylinder 2 and a water collecting cylinder 3 are mounted. A condenser tube 4 is fixedly connected between the fractionation cylinder 2 and the water collecting cylinder 3. A vapor collecting component 5 is mounted above the fractionation cylinder 2. The vapor collecting component 5 includes a protective cover 51 and a moisture-absorbing component 52 located inside it. The moisture-absorbing component 52 is moisture-absorbing cotton (or other moisture-absorbing material). The inner wall of the protective cover 51 is detachably connected to the outer ends of the fractionation cylinder 2 and the water collecting cylinder 3. A sealing plate 54 is fixedly connected to the bottom of the protective cover 51. A pair of through holes are provided on the sealing plate 54. A waterproof layer 53 is fixedly connected to the top surface of the moisture-absorbing component 52. The waterproof layer 53 is made of waterproof cloth. The moisture-absorbing component 52 is used to collect the evaporated water vapor and gather it into water droplets. An intermittent drive component 6 is provided on the vapor collection component 5. The intermittent drive component 6 is used to intermittently rotate the moisture-absorbing component 52 by a set angle. A reciprocating squeezing component 7 is provided inside the water collection cylinder 3. The reciprocating squeezing component 7 includes a squeezing plate 71. A top rod 72 is fixedly connected to the bottom of the squeezing plate 71. The top rod 72 is responsible for the up-and-down reciprocating movement, so that the squeezing plate 71 repeatedly squeezes the moisture-absorbing component 52.

[0024] Specifically, a heating mechanism is provided on the outer wall of the fractionation cylinder 2. The heating mechanism is electrically connected to the temperature control mechanism. The temperature of the heating mechanism can be controlled by the temperature control mechanism. Since the boiling point of water is 100 degrees and the boiling point of n-propyl acetate is about 102 degrees, the temperature should be controlled at exactly 100 degrees.

[0025] When the liquid temperature reaches 100 degrees Celsius, the water begins to evaporate into water vapor. As the water vapor rises, it is absorbed by the moisture-absorbing element 52. After capturing a large amount of water vapor, the water vapor comes into contact with each other and begins to condense rapidly into water droplets. Then, the portion of the moisture-absorbing element 52 that has absorbed a large amount of water vapor rotates to the top of the water collecting cylinder 3 and is squeezed by the extrusion plate 71, which squeezes out the water. The resulting water falls onto the water collecting cylinder 3. At the same time, some water vapor also passes through the condenser tube 4 and condenses into water droplets on the condenser tube 4, which also fall onto the water collecting cylinder 3. This achieves rapid collection of water vapor and effectively prevents the water vapor from recondensing in the fractionation cylinder 2 and falling back onto the mixture.

[0026] Please see Figure 4 In a further embodiment of the present invention, the intermittent drive component 6 includes a driven shaft 61. The outer wall of the driven shaft 61 is fixedly connected to the inner wall of the moisture-absorbing component 52. The bottom end of the driven shaft 61 extends movably through to the outer end of the base bracket 1. A driven wheel 62 is fixedly sleeved on the outer end of the driven shaft 61. The driven wheel 62 has multiple arc-shaped grooves 63 and drive grooves 64, which are distributed in annular intervals. The bottom end of the base bracket 1 is rotatably connected to a drive shaft 65. The outer end of the drive shaft 65 is fixedly sleeved with a deflector wheel 66 and an anti-rotation wheel 67, respectively. A deflector post 68 is fixedly connected to the bottom of the deflector wheel 66. The outer end of the anti-rotation wheel 67 has a receiving groove 69. A speed reduction drive component 8 is provided at the outer end of the drive shaft 65. The speed reduction drive component 8 is responsible for continuously rotating the drive shaft 65.

[0027] During the rotation of the drive shaft 65, it will drive the actuating wheel 66 and the actuating column 68 to rotate. When the actuating column 68 rotates to the vicinity of the drive groove 64, it will enter the drive groove 64 and drive the driven wheel 62 to rotate at a set angle (in this embodiment, there are four drive grooves 64, so each rotation is 90 degrees). After the driven wheel 62 rotates 90 degrees, it will also drive the moisture-absorbing component 52 to rotate 90 degrees through the driven shaft 61, rotating the part of the moisture-absorbing component 52 that has just absorbed moisture by 90 degrees. Then, after the next rotation of 90 degrees, the wet part of the moisture-absorbing component 52 will just rotate above the water collection cylinder 3.

[0028] Please see Figure 5 In a further embodiment of the present invention, the deceleration drive component 8 includes a deceleration motor 81, the output end of the deceleration motor 81 is fixedly connected to a drive shaft 82, the outer end of the drive shaft 82 is fixedly connected to a first gear 83, the outer end of the driven shaft 61 is fixedly sleeved with a second gear 84, and the first gear 83 and the second gear 84 are meshed together.

[0029] In a further embodiment of the present invention, a stirring shaft is fixedly connected to the top of the drive shaft 82, and multiple stirring blades are fixedly connected to the outer end of the stirring shaft. The multiple stirring blades are used to repeatedly stir the liquid, which can not only transfer heat quickly, but also make water vapor rise quickly.

[0030] By setting a reduction motor 81, the drive shaft 82 can be rotated quickly. On the one hand, the stirring shaft can rotate multiple stirring blades to fully stir the mixed liquid and allow heat to be transferred quickly. On the other hand, the liquid can drive the first gear 83 to rotate. Since the number of teeth of the first gear 83 is less than that of the second gear 84, the second gear 84 can be decelerated and rotated. This allows the moisture-absorbing element 52 to stay in the fractionation cylinder 2 for a period of time before rotating, so that the moisture-absorbing element 52 can absorb enough water vapor and transport it to the water collection cylinder 3.

[0031] Please see Figure 6 In the embodiments provided by the present invention, the reciprocating extrusion component 7 further includes a rotating shaft 73, an eccentric wheel 74 is fixedly sleeved on the outer end of the rotating shaft 73, the bottom of the push rod 72 extends movably through to the outer end of the base bracket 1, the bottom of the push rod 72 is fixedly connected to a top plate 75, and the outer end of the eccentric wheel 74 maintains a contact relationship with the top plate 75.

[0032] A first bevel gear 76 is fixedly sleeved on the outer wall of the end of the rotating shaft 73 away from the eccentric wheel 74, and a second bevel gear 77 is fixedly sleeved on the outer wall of the bottom end of the drive shaft 65. The first bevel gear 76 and the second bevel gear 77 are meshed together. A support cylinder 78 is movably sleeved on the outer end of the rotating shaft 73, and a support shaft 79 is fixedly connected between the support cylinder 78 and the base bracket 1.

[0033] In this embodiment, the driven wheel 62 only starts rotating when the drive shaft 65 rotates three-quarters of a revolution. Therefore, the number of teeth on the first bevel gear 76 can be set to be the same as the number of teeth on the second bevel gear 77. When the drive shaft 65 rotates 90 degrees, the eccentric wheel 74 rotates 90 degrees, causing the top plate 75, along with the push rod 72 and the squeezing plate 71, to rise and squeeze the absorbent cotton that has stopped at this time. When the drive shaft 65 rotates 90 degrees again, the eccentric wheel 74 also rotates 90 degrees. At this time, the top plate 75, along with the push rod 72 and the squeezing plate 71, descends. In the next 180 degrees, although the eccentric wheel 74 also rotates 180 degrees, the top plate 75 remains stationary. During this time, the actuating wheel 66 completes the transmission of the driven wheel 62, causing the driven shaft 61 to rotate 90 degrees and replace the absorbent part of the absorbent component 52. This absorbent part will be squeezed by the squeezing plate 71 after the next rotation to complete the dehydration work.

[0034] Example 3 Please see Figure 7-9The difference between this embodiment and embodiment two is that the following technical features are added: the extrusion plate 71 includes multiple extrusion rings 711, which are slidably connected to each other and have a stepped outer diameter. The extrusion ring 711 near the middle is fixedly connected to the top rod 72. The multiple extrusion rings 711 have an unfolded state and a folded state. When the multiple extrusion rings 711 are in the folded state, they squeeze out the water droplets adsorbed by the moisture-absorbing member 52. When the multiple extrusion rings 711 are in the unfolded state, they discharge the squeezed water.

[0035] The extrusion ring 711 has a first drainage hole 712 and a second drainage hole 713. The first drainage hole 712 is arranged at an angle, and the second drainage hole 713 is arranged vertically. The first drainage hole 712 and the second drainage hole 713 are interconnected.

[0036] The outermost compression ring 711 is slidably connected to a limit ring 714 at its outer end. The outer end of the push rod 72 is fixedly connected to a connecting rod 715. The outer end of the connecting rod 715 is fixedly connected to a slider 716. A guide groove 717 is provided on the limit ring 714. The slider 716 slides inside the guide groove 717. An elastic element 718 is fixedly connected inside the guide groove 717. The elastic element 718 is a compression spring. The top of the slider 716 is fixedly connected to the elastic element 718.

[0037] Specifically, except for the outermost compression ring 711, each compression ring 711 is fixedly connected to a lifting ring 719 at its bottom end. The lifting ring 719 has a slightly smaller diameter so that adjacent lifting rings 719 will not touch each other during movement. Therefore, when the middle compression ring 711 is lifted by the push rod 72, the adjacent compression rings 711 will be lifted through the bottom lifting rings 719, thus transmitting force until all compression rings 711 are lifted together and a compression plane is formed on the top surface, which finally compresses the moisture-absorbing component 52.

[0038] In this invention, in order to prevent liquid from overflowing, a limiting ring 714 can be set. During the upward movement of the push rod 72, it will also carry the connecting rod 715 upward, and the connecting rod 715 will carry the slider 716 upward. The limiting ring 714 will rise synchronously through the elastic member 718 and reach the surface of the moisture-absorbing member 52 first. Then the push rod 72 will continue to rise. Multiple limiting rings 714 are gradually raised, merging into a single plane. During this process, the elastic element 718 remains compressed, and under its pressure, the limiting rings 714 press tightly against the moisture-absorbing element 52. After the multiple limiting rings 714 compress the moisture-absorbing element 52, the squeezed water falls onto the compression ring 711 instead of overflowing from the limiting rings 714. Then, as the push rod 72 descends, the multiple limiting rings 714 unfold, allowing liquid to enter through multiple first drain holes 712 and flow out through second drain holes 713, falling into the water collection cylinder 3. This intermittently collects liquid water, effectively preventing water waste.

[0039] Specifically, a branch pipe 9 is fixedly connected between the protective cover 51 and the water collection cylinder 3. The branch pipe 9 can also be used as a condensation pipe. Water vapor leaving the moisture-absorbing element 52 can enter the branch pipe 9 for condensation and finally condense into liquid and be collected by the water collection cylinder 3.

[0040] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A process for preparing a slow-release ink thinner containing n-propyl acetate, characterized in that: The steps are as follows: Reaction preparation: Add acetic acid and n-propanol to the reactor; during this process, control the reactor temperature and the ratio of reactants to ensure the smooth progress of the esterification reaction; Esterification reaction: Acetic acid and n-propanol are heated and reacted in the presence of a catalyst to produce n-propyl acetate and water; Dehydration treatment: The n-propyl acetate and water produced by the above reaction are placed in the fractionation cylinder (2), and the water is distilled out by the fractionation mechanism and collected; Storage: The final obtained n-propyl acetate was stored in a sealed container under temperature and humidity control. The system includes a fractionation mechanism, which includes a base support (1), a fractionation cylinder (2) and a water collection cylinder (3) on the base support (1), a condenser (4) fixedly connected between the fractionation cylinder (2) and the water collection cylinder (3), and a steam collection component (5) above the fractionation cylinder (2). The vapor collection component (5) includes a protective cover (51) and a moisture-absorbing component (52) located inside it. The inner wall of the protective cover (51) is detachably connected to the outer end of the fractionation cylinder (2) and the water collection cylinder (3). A sealing plate (54) is fixedly connected to the bottom of the protective cover (51). A pair of through holes are provided on the sealing plate (54). A waterproof layer (53) is fixedly connected to the top surface of the moisture-absorbing component (52). The moisture-absorbing component (52) is used to collect the evaporated water vapor and gather it into water droplets. The vapor collection component (5) is provided with an intermittent drive component (6), which is used to intermittently rotate the moisture-absorbing component (52) by a set angle; The water collection cylinder (3) is equipped with a reciprocating squeezing component (7), which includes a squeezing plate (71). A top rod (72) is fixedly connected to the bottom of the squeezing plate (71). The top rod (72) is responsible for reciprocating up and down, so that the squeezing plate (71) repeatedly squeezes the moisture-absorbing component (52). The intermittent drive component (6) includes a driven shaft (61), the outer wall of which is fixedly connected to the inner wall of the moisture-absorbing component (52). The bottom end of the driven shaft (61) extends movably through to the outer end of the base bracket (1). A driven wheel (62) is fixedly sleeved on the outer end of the driven shaft (61). The driven wheel (62) has multiple arc-shaped grooves (63) and drive grooves (64) arranged in a ring. The bottom end of the base bracket (1) is rotatably connected to a drive shaft (65). The outer end of the drive shaft (65) is fixedly sleeved with a push wheel (66) and an anti-rotation wheel (67). The bottom of the push wheel (66) is fixedly connected to a push post (68). The outer end of the anti-rotation wheel (67) is provided with a receiving groove (69). The outer end of the drive shaft (65) is provided with a speed reduction drive component (8). The speed reduction drive component (8) is responsible for continuously rotating the drive shaft (65).

2. The preparation process of the n-propyl acetate slow-release ink thinner according to claim 1, characterized in that, The deceleration drive component (8) includes a deceleration motor (81), the output end of which is fixedly connected to a drive shaft (82), the outer end of which is fixedly connected to a first gear (83), and the outer end of the driven shaft (61) is fixedly sleeved with a second gear (84), and the first gear (83) and the second gear (84) are meshed together.

3. The preparation process of the n-propyl acetate slow-release ink thinner according to claim 2, characterized in that, The reciprocating extrusion component (7) also includes a rotating shaft (73), the outer end of which is fixedly sleeved with an eccentric wheel (74), the bottom of the push rod (72) extends movably through to the outer end of the base bracket (1), the bottom of the push rod (72) is fixedly connected with a top plate (75), and the outer end of the eccentric wheel (74) maintains a contact relationship with the top plate (75).

4. The preparation process of the n-propyl acetate slow-release ink thinner according to claim 3, characterized in that, A first bevel gear (76) is fixedly sleeved on the outer wall of the end of the rotating shaft (73) away from the eccentric wheel (74), and a second bevel gear (77) is fixedly sleeved on the outer wall of the bottom end of the drive shaft (65). The first bevel gear (76) and the second bevel gear (77) are meshed together. A support cylinder (78) is movably sleeved on the outer end of the rotating shaft (73), and a support shaft (79) is fixedly connected between the support cylinder (78) and the base bracket (1).

5. The preparation process of the n-propyl acetate slow-release ink thinner according to claim 4, characterized in that, The extrusion plate (71) includes multiple extrusion rings (711), which are slidably connected to each other and have a stepped outer diameter. The extrusion ring (711) near the middle is fixedly connected to the top rod (72). The multiple extrusion rings (711) have an unfolded state and a folded state. When the multiple extrusion rings (711) are in the folded state, they squeeze out the water droplets adsorbed by the moisture absorbent (52). When the multiple extrusion rings (711) are in the unfolded state, they discharge the squeezed water.

6. The preparation process of the n-propyl acetate slow-release ink thinner according to claim 5, characterized in that, The compression ring (711) is provided with a first drainage hole (712) and a second drainage hole (713). The first drainage hole (712) is arranged at an angle, and the second drainage hole (713) is arranged vertically. The first drainage hole (712) and the second drainage hole (713) are interconnected.

7. The preparation process of the n-propyl acetate slow-release ink thinner according to claim 6, characterized in that, The outer end of the outermost extrusion ring (711) is slidably connected to a limiting ring (714), the outer end of the push rod (72) is fixedly connected to a connecting rod (715), the outer end of the connecting rod (715) is fixedly connected to a slider (716), the limiting ring (714) is provided with a guide groove (717), and the slider (716) slides inside the guide groove (717).

8. The preparation process of the n-propyl acetate slow-release ink thinner according to claim 7, characterized in that, An elastic element (718) is fixedly connected inside the guide groove (717), and the top of the slider (716) is fixedly connected to the elastic element (718).

Images