A twin-screw extruder convenient for cleaning and cleaning method

Abstract

The invention discloses a twin-screw extruder and a cleaning method which are convenient to clean, and relates to the technical field of screw extruders. The invention comprises a cleaning mechanism and a rotating motor installed on one side of the cleaning mechanism, wherein a mixing mechanism is arranged on the top of the cleaning mechanism, and a mixing motor is arranged on the top of the mixing mechanism, wherein the cleaning mechanism comprises an extruder body, cleaning sleeves are symmetrically installed on both sides of the extruder body, and a supporting limit plate is fixedly installed on the end of the cleaning sleeve, wherein a rebound hinge is symmetrically installed on one side of the bottom of the cleaning sleeve, and the bottoms of the two rebound hinges are rotatably connected to the limit baffle plate, wherein a cleaning sliding plate is slidably connected inside the support and limit plate, and the cleaning sliding plate and the first meshing rack are driven to move inside the cleaning sleeve by pushing and pressing the pushing plate, and a cleaning brush extends into the inside of the first screw and the second screw, thereby preliminarily cleaning the surfaces of the first screw and the second screw.

Description

Technical Field

[0001] The invention relates to the technical field of screw extruders, in particular to a twin-screw extruder which is convenient to clean and a cleaning method. Background Art

[0002] Screw extruder is a machine that can concentrate a series of basic chemical unit processes, such as solid conveying, pressurization, melting, exhaust, dehumidification, melt conveying and pumping, on the screw inside the extruder. Compared with single-screw extruder, twin-screw extruder can make the melt more fully mixed, so it is more widely used.

[0003] Announcement No. CN 213972466 U discloses a twin-screw extruder that is easy to clean, comprising: a twin-screw extruder, a drive assembly, the bottom of the drive assembly is fixedly connected to the top of the twin-screw extruder, a cleaning assembly, the right side of the cleaning assembly is arranged on the left side of the drive assembly, a moving assembly, the left side of the moving assembly is fixedly connected to the right side of the drive assembly, and a lifting assembly, the top of the lifting assembly is fixedly connected to the bottom of the moving assembly. Through the coordinated use of the twin-screw extruder, the drive assembly and the cleaning assembly, the device can clean the feed port to ensure that there is no residual raw material mixing, and it is convenient to install and disassemble, and has high applicability. Through the coordinated use of the drive assembly, the moving assembly and the lifting assembly, the device can clean the vacuum hole to ensure that the vacuum hole will not be blocked, improve the quality of the finished product, be convenient and effective, and have a good cleaning effect. However, the above patent still has the following problems in actual use:

[0004] Although the twin-screw extruder that is easy to clean is used in conjunction with the twin-screw extruder, the driving component and the cleaning component, so that the device can clean the feed port to ensure that there is no residual raw material mixing, and it is convenient for installation and disassembly, the interior of the twin-screw extruder cannot be cleaned when the cleaning component is used for cleaning, resulting in a phenomenon that certain raw materials adhere to the twin screws and cannot be cleaned, which is not conducive to the cleaning of the twin-screw extruder.

[0005] A twin-screw extruder and a cleaning method that are easy to clean are proposed to solve the above-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide a twin-screw extruder and a cleaning method that are easy to clean, so as to solve the problem that the twin-screw extruder that is easy to clean proposed in the above background technology can clean the feed port by setting up the coordinated use of the twin-screw extruder, the drive assembly and the cleaning assembly to ensure that there is no residual raw material mixing, and it is convenient for installation and disassembly. However, when the cleaning assembly is used for cleaning, the interior of the twin-screw extruder cannot be cleaned, resulting in certain raw materials adhering to the twin screws and making it impossible to clean them, which is not conducive to the cleaning of the twin-screw extruder.

[0007] To achieve the above object, the present invention provides the following technical solutions: a twin-screw extruder and a cleaning method that are convenient to clean, comprising a cleaning mechanism, and a rotating motor installed on one side of the cleaning mechanism;

[0008] A mixing mechanism is provided on the top of the cleaning mechanism, and a mixing motor is provided on the top of the mixing mechanism;

[0009] Also includes:

[0010] The cleaning mechanism comprises an extruder body, cleaning sleeves are symmetrically mounted on both sides of the extruder body, and support limit plates are fixedly mounted on the ends of the cleaning sleeves;

[0011] Among them, a rebound hinge is symmetrically installed on one side of the bottom of the cleaning sleeve, and the bottoms of the two rebound hinges are rotatably connected to the limited baffle;

[0012] The support limit plate is internally slidably connected with a cleaning sliding plate, and first meshing racks are symmetrically installed on both sides of the top of the cleaning sliding plate;

[0013] A pressing and pushing plate is fixedly installed at the end of the cleaning sliding plate, a first rotating gear is meshed and connected to the top of the first meshing rack, a second meshing rack is meshed and connected to the top of the first rotating gear, a connecting rope is fixedly connected to the end of the second meshing rack, and the connecting rope is fixedly connected to the limit baffle;

[0014] By adopting the above technical solution, the cleaning sliding plate and the first meshing rack are driven to move inside the cleaning sleeve by pushing the pressing push plate, and the meshing connection between the first meshing rack, the first rotating gear and the second meshing rack is utilized to make the second meshing rack move while driving the connecting rope to pull the limit baffle to rotate around the rebound hinge, and at the same time, the cleaning brush is extended into the first screw and the second screw, so as to preliminarily clean the surfaces of the first screw and the second screw;

[0015] A limiting groove is symmetrically provided on one side of the interior of the cleaning sliding plate, a plurality of limiting blocks are fixedly installed inside the limiting groove, a cleaning brush is fixedly connected to the end of the cleaning sliding plate away from the pressing and pushing plate, a fixing sleeve is fixedly installed on the end of the second meshing rack away from the connecting rope, and a first sliding groove is provided inside the fixing sleeve;

[0016] By adopting the above technical solution, the materials on the surfaces of the first screw and the second screw can be accumulated to a certain extent, so that they can be cleaned under the spiral pushing action of the first screw and the second screw. At the same time, a torsion spring is arranged inside the rebound hinge to realize the automatic closing of the limit baffle. After the cleaning is completed, the materials on the surface of the cleaning brush can be cleaned, thereby improving the service life of the cleaning brush.

[0017] The fixed sleeve is provided with a second sliding groove on one side of the bottom close to the first sliding groove, a locking spring is fixedly installed inside the first sliding groove, a locking sliding rod is fixedly installed at the bottom of the locking spring, an unlocking paddle is fixedly installed on one side of the locking sliding rod, the unlocking paddle is slidably connected to the fixed sleeve through the second sliding groove, a locking block is fixedly installed at the bottom of the locking sliding rod, and the locking block is engaged with the limit stopper;

[0018] By adopting the above technical solution, the locking sliding rod can be mobilized to slide inside the fixed sleeve by the elastic force of the locking spring inside the first sliding groove, and the second meshing rack can be fixed by utilizing the characteristics of the locking connection between the locking block and the limit stopper, so as to facilitate the control of the rotation angle of the limit stopper, so that the cleaning brush and the cleaning sliding plate can extend into the surfaces of the first screw and the second screw, thereby improving the cleaning effect;

[0019] A mounting plate is attached to one side of the extruder body, a motor bracket is fixedly mounted on one side of the bottom of the mounting plate, the rotating motor is fixedly mounted on the top of the motor bracket, a second rotating gear is fixedly connected to the output end of the rotating motor, a meshing gear is meshedly connected to one side of the second rotating gear, a connecting water pipe is fixedly mounted inside the meshing gear, and a cleaning water pipe is fixedly mounted on one side of the connecting water pipe;

[0020] By adopting the above technical solution, by connecting the water pipe to an external water source, and starting the rotating motor to drive the second rotating gear to rotate, the first screw and the second screw are rotated by utilizing the characteristics of the meshing connection between the second rotating gear and the meshing gear, so as to realize the extrusion function of the material;

[0021] A first rotating knob is rotatably connected to one side of the meshing gear, a first screw is fixedly installed on one side of the first rotating knob, the first screw is closely connected to the cleaning water pipe, a second screw is fixedly connected to one side of the second rotating gear, a plurality of fixed blocks are symmetrically installed on one side of the top and bottom of the extruder body, a clamping bracket is symmetrically installed on the top and bottom of the mounting plate, and a clamping rotating shaft is rotatably connected inside the clamping bracket;

[0022] By adopting the above technical solution, when it is necessary to clean the inside of the extruder body, the first screw and the cleaning water pipe are driven to rotate relative to each other by rotating the first rotating knob, so that the through hole of the cleaning water pipe is connected with the through hole of the first screw, so that the inside of the extruder body and the second screw are cleaned for the second time by spraying water, thereby improving the cleaning effect of the extruder body;

[0023] One side of the engaging rotating shaft is rotatably connected to a engaging rotating rod, one side of the end of the engaging rotating rod is fixedly installed with an engaging protrusion, one side of the engaging rotating rod is fixedly installed with a pressing block, the bottom of the pressing block is fixedly connected to a pressing spring, the top of the pressing block is fixedly connected to an engaging connecting rod, the inner side of the engaging bracket is rotatably connected to a second rotating knob, the top of the second rotating knob is fixedly installed with a locking spring, the top of the locking spring is fixedly connected with a engaging block, and the top of the engaging block is engaged with an unlocking pressing plate.

[0024] By adopting the above technical solution, the locking block is separated from the unlocking pressing plate by pressing the locking block under the action of the locking spring, and the unlocking pressing plate is pressed to drive the locking connecting rod and the locking rotating rod to rotate around the locking rotating axis. When the locking protrusion at the end of the locking rotating rod is separated from the fixed block, the mounting plate and the extruder body can be separated, and the first screw and the second screw can be taken out from the inside of the extruder body, so as to thoroughly clean the first screw and the second screw, thereby improving the cleaning effect of the extruder.

[0025] Preferably, the mixing mechanism includes a mixing box, a mixing hopper is fixedly installed on the bottom of the mixing box, a feed port is fixedly installed on one side of the top of the mixing box, the mixing motor is fixedly installed at the top center position of the mixing box, the output end of the mixing motor is fixedly connected to a mixing rotating rod, a rotating sleeve is fixedly installed on the outer side of the top of the mixing rotating rod, and a tripod is fixedly installed on the outer side of the rotating sleeve.

[0026] By adopting the above technical scheme, the mixing motor is used to drive the mixing rotating rod and the mixing bracket to rotate, and the mixing bracket is used to perform preliminary stirring and mixing of the raw materials. At the same time, the rotating sleeve is used to drive the tripod and the spiral mixing scraper to rotate. By utilizing the characteristics of the spiral structure of the spiral mixing scraper, the raw materials can be stirred up and down, and the raw materials can be fully mixed.

[0027] Preferably, a spiral mixing scraper is fixedly installed on the bottom of the tripod, a mixing bracket is fixedly installed on the bottom of the mixing rotating rod, a spiral cleaning scraper is fixedly installed on the outside of the mixing bracket, the spiral cleaning scraper is fit-connected to the mixing hopper, and the spiral mixing scraper is fit-connected to the mixing box.

[0028] By adopting the above technical solution, the spiral mixing scraper and the spiral cleaning scraper can clean the raw materials on the surface of the mixing box and the mixing hopper, avoiding the phenomenon of raw material waste.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: the twin-screw extruder and cleaning method that are easy to clean, by pushing the pressing push plate to drive the cleaning sliding plate and the first meshing rack to move inside the cleaning sleeve, utilizing the meshing connection characteristics between the first meshing rack, the first rotating gear and the second meshing rack, so that the second meshing rack moves while driving the connecting rope to pull the limit baffle to rotate around the rebound hinge, and at the same time the cleaning brush extends into the first screw and the second screw, thereby preliminarily cleaning the surfaces of the first screw and the second screw, utilizing the mixing motor to drive the mixing rotating rod and the mixing bracket to rotate, utilizing the mixing bracket to preliminarily stir and mix the raw materials, and utilizing the rotating sleeve to drive the tripod and the spiral mixing scraper to rotate, utilizing the characteristics of the spiral structure of the spiral mixing scraper, the raw materials can be stirred up and down, and the raw materials can be fully mixed, and the specific contents are as follows:

[0030] 1. The cleaning mechanism can not only drive the cleaning sliding plate and the first meshing rack to move inside the cleaning sleeve by pushing the pressing push plate, but also utilize the meshing connection characteristics between the first meshing rack, the first rotating gear and the second meshing rack to make the second meshing rack move while driving the connecting rope to pull the limit baffle to rotate around the rebound hinge, and at the same time, the cleaning brush extends into the first screw and the second screw, so as to perform preliminary cleaning on the surfaces of the first screw and the second screw, so that the materials on the surfaces of the first screw and the second screw can be accumulated to a certain extent, so as to perform cleaning under the spiral pushing action of the first screw and the second screw, and at the same time, a torsion spring is arranged inside the rebound hinge, so as to realize the automatic closing of the limit baffle, and after the cleaning is completed, the materials on the surface of the cleaning brush can be cleaned, thereby improving the service life of the cleaning brush, and the locking sliding rod can be mobilized to slide inside the fixed sleeve by the elastic force of the engaging spring inside the first sliding groove, and the second meshing rack can be fixed by utilizing the engaging connection characteristics between the locking block and the limit baffle, so as to facilitate the control of the rotation angle of the limit baffle, so that the cleaning brush and the cleaning sliding rod can be moved to the fixed sleeve. The moving plate can extend into the surface of the first screw and the second screw, thereby improving the cleaning effect. The water source is connected to the water pipe, and the rotating motor is started to drive the second rotating gear to rotate. The first screw and the second screw are rotated by utilizing the meshing connection between the second rotating gear and the meshing gear, so as to realize the extrusion function of the material. When it is necessary to clean the inside of the extruder body, the first screw and the cleaning water pipe are driven to rotate relative to each other by rotating the first rotating knob, so that the through hole of the cleaning water pipe is connected with the through hole of the first screw, so that the inside of the extruder body and the second screw are cleaned twice by spraying water, thereby improving the cleaning effect of the extruder body. By pressing the locking block, the locking block is separated from the unlocking pressing plate under the action of the locking spring, and the unlocking pressing plate is pressed to drive the locking connecting rod and the locking rotating rod to rotate around the locking rotating shaft. When the locking protrusion at the end of the locking rotating rod is separated from the fixed block, the mounting plate can be separated from the extruder body, and the first screw and the second screw are taken out from the inside of the extruder body, thereby thoroughly cleaning the first screw and the second screw, thereby improving the cleaning effect of the extruder.

[0031] 2. By setting up the mixing box, not only can the mixing motor be used to drive the mixing rotating rod and the mixing bracket to rotate, and the mixing bracket can be used to perform preliminary stirring and mixing of the raw materials, but the rotating sleeve can also be used to drive the tripod and the spiral mixing scraper to rotate. By utilizing the characteristics of the spiral structure of the spiral mixing scraper, the raw materials can be stirred up and down to fully mix the raw materials. At the same time, the spiral mixing scraper and the spiral cleaning scraper can clean the raw materials on the surface of the mixing box and the mixing hopper to avoid waste of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the three-dimensional structure of the cleaning mechanism in the present invention;

[0034] Figure 3 It is a schematic diagram of the three-dimensional structure of the support and limiting plate in the present invention;

[0035] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of the middle A area;

[0036] Figure 5 It is a schematic diagram of the three-dimensional structure of the cross section of the fixed sleeve in the present invention;

[0037] Figure 6 A schematic diagram of the three-dimensional structure of the first screw and the second screw in the present invention;

[0038] Figure 7 It is a schematic diagram of the three-dimensional structure of the cleaning water pipe in the present invention;

[0039] Figure 8 A schematic diagram of the three-dimensional structure of the unlocking pressing plate in the present invention;

[0040] Fig. 9 It is a schematic diagram of the three-dimensional structure of the cross section of the engaging bracket in the present invention;

[0041] Fig.10 It is a schematic diagram of the three-dimensional structure of the mixing mechanism cross section in the present invention;

[0042] Fig.11 It is a schematic diagram of the three-dimensional structure of the spiral mixing scraper and the mixing support in the present invention.

[0043] In the figure: 1. cleaning mechanism; 101. extruder body; 102. cleaning sleeve; 103. support limit plate; 104. rebound hinge; 105. limit baffle; 106. cleaning sliding plate; 107. first meshing rack; 108. push-pushing plate; 109. first rotating gear; 110. second meshing rack; 111. connecting rope; 112. limit groove; 113. limit block; 114. cleaning brush; 115. fixing sleeve; 116. first sliding groove; 117. second sliding groove; 118. engaging spring; 119. unlocking paddle; 120. locking sliding rod; 121. locking block; 122. mounting plate; 123. motor bracket; 124. rotating motor; 125. second rotating gear; 126. meshing gear; 1 27. Connect water pipe; 128. Clean water pipe; 129. First rotating knob; 130. First screw rod; 131. Second screw rod; 132. Fixed block; 133. Engagement bracket; 134. Engagement rotation shaft; 135. Engagement rotation rod; 136. Engagement protrusion; 137. Pressing block; 138. Pressing spring; 139. Engagement connecting rod; 140. Second rotating knob; 141. Locking spring; 142. Engagement block; 143. Unlocking pressing plate; 2. Mixing mechanism; 201. Mixing box; 202. Mixing hopper; 203. Feed inlet; 204. Mixing motor; 205. Mixing rotating rod; 206. Rotating sleeve; 207. Tripod; 208. Spiral mixing scraper; 209. Mixing bracket; 210. Spiral cleaning scraper. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-Figure 11The present invention provides a technical solution: a twin-screw extruder and a cleaning method that are easy to clean, comprising a cleaning mechanism 1 and a rotating motor 124 installed on one side of the cleaning mechanism 1, a mixing mechanism 2 is arranged on the top of the cleaning mechanism 1, and a mixing motor 204 is arranged on the top of the mixing mechanism 2, the cleaning mechanism 1 comprises an extruder body 101, cleaning sleeves 102 are symmetrically installed on both sides of the extruder body 101, and a supporting limit plate 103 is fixedly installed on the end of the cleaning sleeve 102, wherein a rebound hinge 104 is symmetrically installed on one side of the bottom of the cleaning sleeve 102, and the bottoms of the two rebound hinges 104 are rotatably connected to the limit baffle 105, wherein a cleaning sliding plate 106 is slidably connected inside the support and limit plate 103, and first meshing racks 107 are symmetrically installed on both sides of the top of the cleaning sliding plate 106, and a pressing and pushing plate 108 is fixedly installed on the end of the cleaning sliding plate 106, and the top of the first meshing rack 107 is meshedly connected with a first rotating gear 109, and the first rotating gear 109 is The top is meshed with a second meshing rack 110, and the end of the second meshing rack 110 is fixedly connected to a connecting rope 111, and the connecting rope 111 is fixedly connected to the limit baffle 105. A limit groove 112 is symmetrically provided on one side of the interior of the cleaning sliding plate 106, and a plurality of limit blocks 113 are fixedly installed inside the limit groove 112. A cleaning brush 114 is fixedly connected to the end of the cleaning sliding plate 106 away from the pressing and pushing plate 108, and the cleaning sliding plate 106 and the pressing and pushing plate 108 are driven by pushing The first meshing rack 107 moves inside the cleaning sleeve 102. By utilizing the meshing connection characteristics among the first meshing rack 107, the first rotating gear 109 and the second meshing rack 110, the second meshing rack 110 moves while driving the connecting rope 111 to pull the limit baffle 105 to rotate around the rebound hinge 104. At the same time, the cleaning brush 114 extends into the first screw 130 and the second screw 131, thereby performing preliminary cleaning on the surfaces of the first screw 130 and the second screw 131.

[0046] A fixed sleeve 115 is fixedly installed at one end of the second meshing rack 110 away from the connecting rope 111, a first sliding groove 116 is provided inside the fixed sleeve 115, a second sliding groove 117 is provided on the bottom side of the fixed sleeve 115 close to the first sliding groove 116, a clamping spring 118 is fixedly installed inside the first sliding groove 116, a locking sliding rod 120 is fixedly installed at the bottom of the clamping spring 118, an unlocking paddle 119 is fixedly installed on one side of the locking sliding rod 120, the unlocking paddle 119 is slidably connected to the fixed sleeve 115 through the second sliding groove 117, a locking block 121 is fixedly installed at the bottom of the locking sliding rod 120, and the locking block 121 is clamped and connected with the limit stopper 113, a mounting plate 122 is closely connected to one side of the extruder body 101, a motor bracket 123 is fixedly installed on one side of the bottom of the mounting plate 122, a rotating motor 124 is fixedly installed on the top of the motor bracket 123, and the output end of the rotating motor 124 is fixedly connected to the second rotating gear 125 One side of the second rotating gear 125 is meshedly connected with a meshing gear 126, a connecting water pipe 127 is fixedly installed inside the meshing gear 126, a cleaning water pipe 128 is fixedly installed on one side of the connecting water pipe 127, one side of the meshing gear 126 is rotatably connected with a first rotating knob 129, one side of the first rotating knob 129 is fixedly installed with a first screw 130, the first screw 130 is closely connected to the cleaning water pipe 128, and one side of the second rotating gear 125 is fixedly connected with a second screw 131, through the elastic force of the locking spring 118 inside the first sliding groove 116, the locking sliding rod 120 can be mobilized to slide inside the fixed sleeve 115, and the locking block 121 and the limit stop block 113 are used to fix the second meshing rack 110, which is convenient for controlling the rotation angle of the limit stop plate 105, so that the cleaning brush 114 and the cleaning sliding plate 106 can extend into the surface of the first screw 130 and the second screw 131, thereby improving the cleaning effect.

[0047] A plurality of fixing blocks 132 are symmetrically installed on the top and bottom of the extruder body 101, and a clamping bracket 133 is symmetrically installed on the top and bottom of the mounting plate 122. The inside of the clamping bracket 133 is rotatably connected to a clamping rotating shaft 134, and one side of the clamping rotating shaft 134 is rotatably connected to a clamping rotating rod 135, and one side of the end of the clamping rotating rod 135 is fixedly installed with a clamping protrusion 136, and one side of the clamping rotating rod 135 is fixedly installed with a pressing block 137, and the bottom of the pressing block 137 is fixedly connected to a pressing spring 138. The pressing block 137 is fixedly connected to the bottom of the pressing block 137. The top of the second rotating gear 125 is fixedly connected with a locking connecting rod 139, the inner side of the locking bracket 133 is rotatably connected with a second rotating knob 140, the top of the second rotating knob 140 is fixedly installed with a locking spring 141, the top of the locking spring 141 is fixedly connected with a locking block 142, and the top of the locking block 142 is locked and connected with an unlocking pressing plate 143. By connecting the water pipe 127 to an external water source and starting the rotating motor 124 to drive the second rotating gear 125 to rotate, the second rotating gear 125 is meshed with the meshing gear 126 to achieve the second rotating gear 125. The first screw 130 and the second screw 131 rotate to realize the extrusion function of the material. When it is necessary to clean the inside of the extruder body 101, the first screw 130 and the cleaning water pipe 128 are driven to rotate relative to each other by rotating the first rotating knob 129, so that the through hole of the cleaning water pipe 128 is connected with the through hole of the first screw 130, so that the inside of the extruder body 101 and the second screw 131 are cleaned twice by spraying water, thereby improving the cleaning effect of the extruder body 101. By pressing the locking block 142 under the action of the locking spring 141, The locking block 142 is separated from the unlocking pressing plate 143, and the unlocking pressing plate 143 is pressed to drive the locking connecting rod 139 and the locking rotating rod 135 to rotate around the locking rotating shaft 134. When the locking protrusion 136 at the end of the locking rotating rod 135 is separated from the fixed block 132, the mounting plate 122 can be separated from the extruder body 101, and the first screw 130 and the second screw 131 can be taken out from the inside of the extruder body 101, so as to thoroughly clean the first screw 130 and the second screw 131, thereby improving the cleaning effect of the extruder.

[0048] The mixing mechanism 2 includes a mixing box 201, a mixing hopper 202 is fixedly installed at the bottom of the mixing box 201, a feeding port 203 is fixedly installed on one side of the top of the mixing box 201, a mixing motor 204 is fixedly installed at the top center of the mixing box 201, a mixing rotating rod 205 is fixedly connected to the output end of the mixing motor 204, a rotating sleeve 206 is fixedly installed on the top outer side of the mixing rotating rod 205, a tripod 207 is fixedly installed on the outer side of the rotating sleeve 206, a spiral mixing scraper 208 is fixedly installed at the bottom of the tripod 207, a mixing bracket 209 is fixedly installed at the bottom of the mixing rotating rod 205, and a spiral cleaning scraper 210 is fixedly installed on the outer side of the mixing bracket 209 The spiral cleaning scraper 210 is closely connected to the mixing hopper 202, and the spiral mixing scraper 208 is closely connected to the mixing box 201. The mixing motor 204 is used to drive the mixing rotating rod 205 and the mixing bracket 209 to rotate, and the mixing bracket 209 is used to perform preliminary stirring and mixing of the raw materials. At the same time, the rotating sleeve 206 is used to drive the tripod 207 and the spiral mixing scraper 208 to rotate. The spiral structure of the spiral mixing scraper 208 can realize the up and down stirring of the raw materials and fully mix the raw materials. At the same time, the spiral mixing scraper 208 and the spiral cleaning scraper 210 can clean the raw materials on the surface of the mixing box 201 and the mixing hopper 202 to avoid the waste of raw materials.

[0049] Working principle: Before using this easy-to-clean twin-screw extruder and cleaning method, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Fig.11As shown, first, by pushing the push plate 108, the cleaning sliding plate 106 and the first meshing rack 107 are driven to move inside the cleaning sleeve 102, and by utilizing the meshing connection between the first meshing rack 107, the first rotating gear 109 and the second meshing rack 110, the second meshing rack 110 is moved while driving the connecting rope 111 to pull the limit baffle 105 to rotate around the rebound hinge 104, and at the same time, the cleaning brush 114 is extended into the first screw 130 and the second screw 131, so as to preliminarily clean the surfaces of the first screw 130 and the second screw 131, so that the materials on the surfaces of the first screw 130 and the second screw 131 can be accumulated to a certain extent, thereby Under the action of rotation, cleaning is carried out. At the same time, a torsion spring is arranged inside the rebound hinge 104, which can realize the automatic closing of the limit baffle 105. After cleaning is completed, the material on the surface of the cleaning brush 114 can be cleaned to improve the service life of the cleaning brush 114. The elastic force of the locking spring 118 inside the first sliding groove 116 can mobilize the locking sliding rod 120 to slide inside the fixed sleeve 115. By utilizing the characteristics of the locking block 121 and the limit block 113, the second meshing rack 110 can be fixed, which is convenient for controlling the rotation angle of the limit baffle 105, so that the cleaning brush 114 and the cleaning sliding plate 106 can extend into the surface of the first screw 130 and the second screw 131, thereby improving the cleaning effect.

[0050] Secondly, by connecting the water pipe 127 to an external water source and starting the rotating motor 124 to drive the second rotating gear 125 to rotate, the first screw 130 and the second screw 131 are rotated by utilizing the meshing connection between the second rotating gear 125 and the meshing gear 126 to realize the extrusion function of the material. When it is necessary to clean the inside of the extruder body 101, the first screw 130 and the cleaning water pipe 128 are driven to rotate relative to each other by rotating the first rotating knob 129, so that the through hole of the cleaning water pipe 128 is connected to the through hole of the first screw 130, so that the inside of the extruder body 101 and the second screw 131 are cleaned twice by spraying water, thereby improving the cleaning efficiency. The cleaning effect of the extruder body 101 is achieved by pressing the locking block 142 to separate the locking block 142 from the unlocking pressing plate 143 under the action of the locking spring 141, and pressing the unlocking pressing plate 143 to drive the locking connecting rod 139 and the locking rotating rod 135 to rotate around the locking rotating shaft 134. When the locking protrusion 136 at the end of the locking rotating rod 135 is separated from the fixed block 132, the mounting plate 122 can be separated from the extruder body 101, and the first screw 130 and the second screw 131 can be taken out from the inside of the extruder body 101, so as to thoroughly clean the first screw 130 and the second screw 131, thereby improving the cleaning effect of the extruder.

[0051] Finally, the mixing motor 204 is used to drive the mixing rotating rod 205 and the mixing bracket 209 to rotate, and the mixing bracket 209 is used to perform preliminary stirring and mixing of the raw materials. At the same time, the rotating sleeve 206 is used to drive the tripod 207 and the spiral mixing scraper 208 to rotate. The spiral structure of the spiral mixing scraper 208 can realize the up and down stirring of the raw materials and the sufficient mixing of the raw materials. At the same time, the spiral mixing scraper 208 and the spiral cleaning scraper 210 can clean the raw materials on the surface of the mixing box 201 and the mixing hopper 202 to avoid the waste of raw materials.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A twin-screw extruder that is easy to clean, comprising a cleaning mechanism (1), and a rotating motor (124) mounted on one side of the cleaning mechanism (1); A mixing mechanism (2) is arranged on the top of the cleaning mechanism (1), and a mixing motor (204) is arranged on the top of the mixing mechanism (2); It is characterized in that Also includes: The cleaning mechanism (1) comprises an extruder body (101), cleaning sleeves (102) are symmetrically mounted on both sides of the extruder body (101), and support limit plates (103) are fixedly mounted on the ends of the cleaning sleeves (102); Wherein, a rebound hinge (104) is symmetrically mounted on one side of the bottom of the cleaning sleeve (102), and the bottoms of the two rebound hinges (104) are rotatably connected to a limit stopper (105); The support limit plate (103) is internally slidably connected to a cleaning sliding plate (106), and first meshing racks (107) are symmetrically mounted on both sides of the top of the cleaning sliding plate (106); A pressing and pushing plate (108) is fixedly mounted on the end of the cleaning sliding plate (106); the top of the first meshing rack (107) is meshingly connected to a first rotating gear (109); the top of the first rotating gear (109) is meshingly connected to a second meshing rack (110); the end of the second meshing rack (110) is fixedly connected to a connecting rope (111); and the connecting rope (111) is fixedly connected to the limit baffle (105); A limiting groove (112) is symmetrically provided on one side of the interior of the cleaning sliding plate (106), a plurality of limiting blocks (113) are fixedly installed inside the limiting groove (112), a cleaning brush (114) is fixedly connected to the end of the cleaning sliding plate (106) away from the pressing and pushing plate (108), a fixing sleeve (115) is fixedly installed on the end of the second meshing rack (110) away from the connecting rope (111), and a first sliding groove (116) is provided inside the fixing sleeve (115); A second sliding groove (117) is provided on one side of the bottom of the fixed sleeve (115) close to the first sliding groove (116); a locking spring (118) is fixedly installed inside the first sliding groove (116); a locking sliding rod (120) is fixedly installed at the bottom of the locking spring (118); an unlocking paddle (119) is fixedly installed on one side of the locking sliding rod (120); the unlocking paddle (119) is slidably connected to the fixed sleeve (115) through the second sliding groove (117); a locking block (121) is fixedly installed at the bottom of the locking sliding rod (120); the locking block (121) is engaged with the limit stopper (113); A mounting plate (122) is attached to one side of the extruder body (101); a motor bracket (123) is fixedly mounted on one side of the bottom of the mounting plate (122); the rotating motor (124) is fixedly mounted on the top of the motor bracket (123); a second rotating gear (125) is fixedly connected to the output end of the rotating motor (124); a meshing gear (126) is meshedly connected to one side of the second rotating gear (125); a connecting water pipe (127) is fixedly mounted inside the meshing gear (126); and a cleaning water pipe (128) is fixedly mounted on one side of the connecting water pipe (127); One side of the meshing gear (126) is rotatably connected to a first rotating knob (129), one side of the first rotating knob (129) is fixedly mounted with a first screw (130), the first screw (130) is closely connected to a cleaning water pipe (128), one side of the second rotating gear (125) is fixedly connected with a second screw (131), a plurality of fixing blocks (132) are symmetrically mounted on the top and bottom of the extruder body (101), a snap-fit ​​bracket (133) is symmetrically mounted on the top and bottom of the mounting plate (122), and a snap-fit ​​rotating shaft (134) is rotatably connected to the inside of the snap-fit ​​bracket (133); A locking rotating rod (135) is rotatably connected to one side of the locking rotating shaft (134); a locking protrusion (136) is fixedly installed on one side of the end of the locking rotating rod (135); a pressing block (137) is fixedly installed on one side of the locking rotating rod (135); a pressing spring (138) is fixedly connected to the bottom of the pressing block (137); a locking connecting rod (139) is fixedly connected to the top of the pressing block (137); a second rotating knob (140) is rotatably connected to the inner side of the locking bracket (133); a locking spring (141) is fixedly installed on the top of the second rotating knob (140); a locking block (142) is fixedly connected to the top of the locking spring (141); and an unlocking pressing plate (143) is snap-connected to the top of the locking block (142).

2. A twin-screw extruder that is easy to clean according to claim 1, characterized in that: The mixing mechanism (2) comprises a mixing box (201), a mixing hopper (202) is fixedly mounted on the bottom of the mixing box (201), a feeding port (203) is fixedly mounted on one side of the top of the mixing box (201), the mixing motor (204) is fixedly mounted at the top center of the mixing box (201), a mixing rotating rod (205) is fixedly connected to the output end of the mixing motor (204), a rotating sleeve (206) is fixedly mounted on the outer side of the top of the mixing rotating rod (205), and a tripod (207) is fixedly mounted on the outer side of the rotating sleeve (206).

3. A twin-screw extruder that is easy to clean according to claim 2, characterized in that: A spiral mixing scraper (208) is fixedly mounted on the bottom of the tripod (207), a mixing bracket (209) is fixedly mounted on the bottom of the mixing rotating rod (205), a spiral cleaning scraper (210) is fixedly mounted on the outer side of the mixing bracket (209), the spiral cleaning scraper (210) is fitted and connected to the mixing hopper (202), and the spiral mixing scraper (208) is fitted and connected to the mixing box (201).

4. A method for cleaning a twin-screw extruder that is easy to clean, using the twin-screw extruder that is easy to clean as claimed in claim 3, characterized in that: The cleaning steps are as follows: Step 1: The cleaning sliding plate (106) and the first meshing rack (107) are driven to move inside the cleaning sleeve (102) by pushing the pressing push plate (108), and the meshing connection between the first meshing rack (107), the first rotating gear (109) and the second meshing rack (110) is utilized to move the second meshing rack (110) while driving the connecting rope (111) to pull the limit baffle (105) to rotate around the rebound hinge (104), and at the same time, the cleaning brush (114) is extended into the first screw (130) and the second screw (131), thereby preliminarily cleaning the surface of the first screw (130) and the second screw (131), so that the materials on the surface of the first screw (130) and the second screw (131) can be accumulated to a certain extent, thereby the first screw (130) and the second screw (131) are cleaned. ) is pushed by the spiral of the spring, and cleaning is performed. At the same time, a torsion spring is arranged inside the rebound hinge (104), which can realize the automatic closing of the limit baffle (105). After cleaning is completed, the material on the surface of the cleaning brush (114) can be cleaned, thereby improving the service life of the cleaning brush (114). The locking sliding rod (120) can be mobilized to slide inside the fixed sleeve (115) through the elastic force of the locking spring (118) inside the first sliding groove (116). The second meshing rack (110) can be fixed by utilizing the locking connection between the locking block (121) and the limit baffle (113), which facilitates the control of the rotation angle of the limit baffle (105), so that the cleaning brush (114) and the cleaning sliding plate (106) can extend into the surface of the first screw rod (130) and the second screw rod (131), thereby improving the cleaning effect; Step 2: Connect an external water source by connecting a water pipe (127), and start the rotating motor (124) to drive the second rotating gear (125) to rotate. By utilizing the meshing connection between the second rotating gear (125) and the meshing gear (126), the first screw (130) and the second screw (131) are rotated to realize the extrusion function of the material. When it is necessary to clean the inside of the extruder body (101), the first rotating knob (129) is turned to drive the first screw (130) and the cleaning water pipe (128) to rotate relative to each other, so that the through hole of the cleaning water pipe (128) is connected to the through hole of the first screw (130), so that the inside of the extruder body (101) and the second screw (131) are cleaned twice by spraying water, thereby improving the efficiency of the extruder. The cleaning effect of the extruder body (101) is improved by pressing the locking block (142) under the action of the locking spring (141) to separate the locking block (142) from the unlocking pressing plate (143), and pressing the unlocking pressing plate (143) drives the locking connecting rod (139) and the locking rotating rod (135) to rotate around the locking rotating shaft (134). When the locking protrusion (136) at the end of the locking rotating rod (135) is separated from the fixing block (132), the mounting plate (122) and the extruder body (101) can be separated, and the first screw (130) and the second screw (131) can be taken out from the inside of the extruder body (101), so that the first screw (130) and the second screw (131) are thoroughly cleaned, thereby improving the cleaning effect of the extruder; Step 3: Using the mixing motor (204) to drive the mixing rotating rod (205) and the mixing support (209) to rotate, using the mixing support (209) to perform preliminary stirring and mixing of the raw materials, and using the rotating sleeve (206) to drive the tripod (207) and the spiral mixing scraper (208) to rotate. Using the characteristics of the spiral structure of the spiral mixing scraper (208), the raw materials can be stirred up and down to fully mix the raw materials. At the same time, the spiral mixing scraper (208) and the spiral cleaning scraper (210) can clean the raw materials on the surface of the mixing box (201) and the mixing hopper (202) to avoid the phenomenon of raw material waste.

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