An underwater pelletizer provided with a cleaning mechanism

Abstract

The present invention relates to the technical field of underwater pelletizing, and specifically to an underwater pelletizer equipped with a cleaning mechanism, comprising a support base plate and a feed frame mounted above the right side of the support base plate. A start valve for controlling the flow of material is installed through the upper interior of the feed frame. The right end of a rotating rod is connected to a pelletizing blade fitted to the left side of a die assembly. A vibration control assembly for controlling the vertical vibration and cleaning of a cutting chamber is mounted above the connection frame. A scraper for assisting cleaning is connected to the outer side of the rotating rod via a fixed pipe. The outer side of the scraper is in contact with the inner wall of the cutting chamber, and the inner side of the scraper is connected to a water spray pipe for assisting cleaning via a mounting mechanism. In the underwater pelletizer equipped with a cleaning mechanism, the vibration control assembly causes the water and material in the cutting chamber to vibrate, which not only prevents the material from adhering to the inner wall of the cutting chamber, but also vibrates away any material adhering to the inner wall of the cutting chamber, thereby facilitating cleaning of the inner wall of the cutting chamber.

Description

Technical Field

[0001] The invention relates to the technical field of underwater pelletizing, in particular to an underwater pelletizer provided with a cleaning mechanism. Background Art

[0002] Underwater pelletizers are widely used in various polymers and thermoplastics due to their environmental friendliness, pollution-free operation, and small footprint. Because pellets can be quickly cooled in water, the size and shape of the pellets can be more precisely controlled, resulting in a higher degree of compaction.

[0003] The patent disclosed in the prior art with the announcement number "CN116021666A" is titled "An Underwater Pelletizer". It discloses that the sawing head is provided with three blades extending radially along the rotating shaft of the sawing motor. The blades are fixed on the blade support. The blades and the blade support are distributed circumferentially, which can ensure the uniformity of cutting. The sawing head is cylindrical with a conical end. The end face of the sawing head is provided with a sealing ring, and the end face of the mold cavity is also provided with a sealing ring. In this way, when the sawing head is The sealing performance is better when it cooperates with the end face of the mold cavity. The sawing slide is slid to make the blade extend into the mold cavity until it contacts the die plate. At this time, the sawing head is sealed with the end face of the mold cavity. The water inlet pipe conveys water to cool and harden the plastic melt. The sawing motor drives the sawing head to drive the blade to rotate to complete the pelletizing of the plastic melt. Then, the water outlet pipe is opened, and the water flow carries the cut pellets out of the water blowing pipe. The patent name disclosed in the prior art with the announcement number "CN112192780A" is "a An integrated underwater pelletizer is disclosed, which is provided with a pelletizing device, a pelletizing chamber and an opening valve on a connecting frame. By arranging the pelletizing device, the pelletizing chamber and the opening valve on the same connecting frame, the accuracy can be improved, so that the positions of the pelletizing device, the pelletizing chamber and the opening valve are more fixed. The pelletizing device slides on the machine base through a slide rail. The pelletizing device is provided with a cutting knife head. The upper end of the pelletizing chamber is connected to a feed pipe, and the feed pipe is connected to a dehydrating device through the feed pipe. The dehydrating device includes a The dehydration centrifuge is provided with a feeding device which is connected to the feeding pipe, and the lower end of the dehydration device is connected to a water tank which is fixedly mounted on the base frame. The water tank is provided with a water outlet which is connected to the return pipe. The other end of the return pipe is connected to the pelletizing chamber, and a water pump is provided on the return pipe. The material cut by the pelletizing equipment will flow into the dehydration device along the feeding pipe. The dehydration device can centrifuge and dehydrate the material through the centrifuge to separate the material and water.

[0004] During the pelletizing process of the underwater pelletizer in the above-mentioned prior art, if a material with high viscosity such as plastic or rubber is pelletized, small particles of material falling from the cutter or thrown out by the cutter will stick to the inner wall of the pelletizing chamber. If the inner wall of the pelletizing chamber is not cleaned in time, it will affect the subsequent extrusion and pelletizing operations of the material. Therefore, we propose an underwater pelletizer equipped with a cleaning mechanism to solve the above-mentioned problems. Summary of the Invention

[0005] The object of the present invention is to provide an underwater pelletizer equipped with a cleaning mechanism to solve the problem raised in the above-mentioned background technology that in the underwater pelletizer currently on the market, when pelletizing materials with high viscosity such as plastic or rubber, small particles of materials that fall from the cutter or are thrown out by the cutter will stick to the inner wall of the pelletizing chamber. If the inner wall of the pelletizing chamber is not cleaned in time, it will affect the subsequent extrusion and pelletizing operations of the material.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an underwater pelletizer provided with a cleaning mechanism, comprising a supporting base plate and a feed frame installed above the right side of the supporting base plate, an opening valve for controlling the flow of material being installed through the upper interior of the feed frame, a cutting chamber being connected above the supporting base plate, one end of a material conveying pipe and a water guide pipe respectively arranged above and below the cutting chamber are both connected to a filtering and drying assembly, a die assembly is installed inside the feed frame, a pelletizing motor is slidably connected to the upper left side of the supporting base plate, the right end of the pelletizing motor is connected to a rotating rod, the right end of the rotating rod passes through the interior of the connecting frame and extends into the cutting chamber, the right end of the rotating rod is connected to a pelletizing blade fitted with the left side of the die assembly, a vibration control assembly for controlling the up and down vibration cleaning of the cutting chamber is installed above the connecting frame, a scraper for auxiliary cleaning is connected to the outer side of the rotating rod through a fixed pipe, the outer side of the scraper is in contact with the inner wall of the cutting chamber, and the inner side of the scraper is connected to a water spray pipe for auxiliary cleaning through a mounting mechanism.

[0007] Preferably, two limiting rods in a T-shaped structure are symmetrically installed above the supporting base plate, and the outer sides of the limiting rods are nested and connected with a return spring;

[0008] Limit rods are provided inside both the front and rear sides of the cutting chamber;

[0009] Connecting ends made of hose material are installed on both the left and right sides of the cutting chamber, and the left and right sides of the cutting chamber are respectively connected to the connecting frame and the feeding frame through the connecting ends.

[0010] Preferably, the left side of the die assembly extends into the cutting chamber, and there is a distance between the outer side of the die assembly and the inner wall of the cutting chamber;

[0011] A water outlet made of a hose is fixed through the upper right side of the cutting chamber, and a material conveying pipe is connected above the water outlet;

[0012] A water inlet made of a hose is fixedly passed through the lower right side of the cutting chamber, a water guide pipe is connected below the water inlet, and a water inlet pipe made of a hose is connected to the left side of the water inlet.

[0013] Preferably, a vertical rod is rotatably connected to the upper interior of the connection frame, and the lower end of the vertical rod is connected to the rotating rod through a bevel gear set.

[0014] Preferably, the interior of the fixed tube is connected to a piston column via a connecting spring, the outer side of the piston column is in close contact with the inner wall of the fixed tube, a second diversion tube is provided through the interior of the piston column, a scraper with a triangular structure is fixed to the outer end of the piston column, one end of the second diversion tube is connected to the water spray pipe, the other end of the second diversion tube is inserted into the fixed tube, and the first diversion tube is fixed through the interior of the end of the fixed tube close to the rotating rod;

[0015] One-way valves are installed in both the first shunt pipe and the second shunt pipe.

[0016] Preferably, a storage cavity is provided inside the left end of the rotating rod, a circle of through holes is provided on the outer side surface of the left end of the rotating rod, a guide frame is rotatably installed through the outer side surface of the left end of the rotating rod, the guide frame is connected to the connecting frame, the space inside the guide frame is connected to the space inside the storage cavity through the through hole, and the end of the first shunt pipe away from the fixed pipe is inserted into the storage cavity;

[0017] A flow guide pipe is fixed below the flow guide frame, and the lower end of the flow guide pipe passes through the lower surface of the connecting frame and is connected to the left end of the water inlet pipe.

[0018] Preferably, the mounting mechanism includes screws, and the water spray pipe is connected to the scraper via the screws.

[0019] Preferably, the vibration control assembly includes horizontal plates installed at equal intervals on the outer side of the upper end of the vertical rod, and a second magnet block is installed below one end of the horizontal plate away from the vertical rod;

[0020] A first magnet block is connected to the upper left side of the cutting chamber. The first magnet block and the second magnet block have the same magnetic poles, and the lowest point of the second magnet block is higher than the highest point of the first magnet block.

[0021] Preferably, the vibration control assembly includes push rods installed at equal intervals on the outer side of the upper end of the vertical rod, and a protrusion is fixed on the upper left side of the cutting chamber, and the front and rear sides of the protrusion are both inclined;

[0022] The highest point of the bump is higher than the lowest point of the push rod.

[0023] Preferably, the mounting mechanism includes bearings mounted on the left and right ends of the water spray pipe, the left and right ends of the water spray pipe are respectively connected to the second diversion pipe and the scraper through the bearings, a vortex spring is nested and connected to the outer side of the right end of the water spray pipe, and a control rope is wrapped around the outer side of the left end of the water spray pipe, and the end of the control rope away from the water spray pipe is connected to the side of the fixed pipe through a guide wheel.

[0024] Compared with the prior art, the present invention has the following beneficial effects: the underwater pelletizer provided with a cleaning mechanism, the vibration control assembly makes the water and material in the cutting chamber vibrate, which not only prevents the material from adhering to the inner wall of the cutting chamber, but also vibrates away the material adhering to the inner wall of the cutting chamber, thereby facilitating the cleaning of the inner wall of the cutting chamber. The specific contents are as follows:

[0025] (1) The vibration control component can drive the cutting chamber to vibrate up and down at a certain height, so that the water and materials in the cutting chamber are in a vibrating state, preventing the materials from adhering to the inner wall of the cutting chamber and affecting the subsequent extrusion and pelletizing operations of the materials. At the same time, the materials adhering to the inner wall of the cutting chamber can also be vibrated off, making it easier to clean the inner wall of the cutting chamber.

[0026] (2) Part of the water in the water guide pipe enters the cutting chamber through the water inlet, and part of the water enters the water spray pipe through the water inlet pipe and the guide frame. Later, the water is sprayed into the cutting chamber through the rotating water spray pipe. The water flow sprayed from the water spray pipe generates turbulence, which can produce impact force on the material close to the inner wall of the cutting chamber, thereby preventing the material from directly contacting and adhering to the inner wall of the cutting chamber. At the same time, with the use of a scraper, the adhesion on the inner wall of the cutting chamber can be scraped and cleaned;

[0027] Furthermore, when the cutting chamber vibrates up and down, it applies a thrust to the scraper at the corresponding position, causing the scraper to drive the piston rod to move into the fixed pipe. As a result, the piston rod exerts pressure on the water in the fixed pipe, causing the water to quickly pass through the second diversion pipe into the water spray pipe, thereby increasing the water flow velocity in the water spray pipe. The faster water flow velocity can enhance the intensity of turbulence, thereby further preventing the material from adhering to the inner wall of the cutting chamber.

[0028] Furthermore, when the piston column moves into the fixed tube, no tension is generated on the control rope. Therefore, the stored force of the vortex spring automatically drives the water spray pipe to rotate in the opposite direction. By repeating this operation, the water spray pipe can perform reciprocating rotation and spray water at a certain angle, thereby increasing the spraying range of the water spray pipe and further preventing the material from sticking to the inner wall of the cutting chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0030] Figure 2This is a schematic diagram of the three-dimensional structure of the supporting base plate of the present invention;

[0031] Figure 3 This is a schematic diagram of the cutting chamber structure from a bottom view of the present invention;

[0032] Figure 4 This is a schematic cross-sectional structural diagram of the cutting chamber of the present invention;

[0033] Figure 5 This is a schematic diagram of the internal structure of the connection frame of the present invention;

[0034] Figure 6 This is a schematic diagram of the three-dimensional structure of the rotating rod of the present invention;

[0035] Figure 7 This is a schematic cross-sectional view of the connection between the rotating rod and the fixed tube of the present invention;

[0036] Figure 8 This is a schematic diagram of the cross-sectional structure of the fixed tube of the present invention;

[0037] Figure 9 This is a schematic diagram of the three-dimensional structure of the vertical rod in the second embodiment of the present invention;

[0038] Figure 10 This is a schematic diagram of the three-dimensional structure of the water spray pipe in Example 3 of the present invention.

[0039] In the figure: 1. Support base plate; 101. Limit rod; 102. Return spring; 2. Feed frame; 3. Start valve; 4. Material conveying pipe; 41. Water outlet; 5. Water guide pipe; 51. Water inlet; 52. Water inlet pipe; 6. Connecting frame; 7. Pelletizing motor; 8. Filtering and drying assembly; 9. Cutting chamber; 91. Connecting end; 92. First magnet block; 93. Bump; 10. Die assembly; 11. Rotating rod; 1 11. Storage chamber; 112. Through hole; 12. Scraper; 13. Vertical rod; 131. Horizontal plate; 132. Second magnet block; 133. Push rod; 14. Guide frame; 141. Guide pipe; 15. Fixed pipe; 151. Piston column; 152. Second diverter pipe; 153. Connecting spring; 154. First diverter pipe; 16. Water spray pipe; 161. Vortex spring; 162. Control rope; 17. Pelletizing blade. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0041] See also Figures 1-10, the present invention provides the following technical solutions:

[0042] Embodiment 1: The underwater pelletizer provided with a cleaning mechanism in this embodiment generates turbulence by vibration and water flow, which not only facilitates cleaning of the inner wall of the cutting chamber 9, but also prevents the material from adhering to the inner wall of the cutting chamber 9 and affecting the subsequent extrusion and pelletizing operations of the material. For the specific structure, please refer to the attached Figures 1-8 As shown, it includes a supporting base plate 1 and a feeding frame 2 installed on the upper right side of the supporting base plate 1. A start-up valve 3 for controlling the flow of materials is installed inside the upper part of the feeding frame 2. A cutting chamber 9 is connected to the upper part of the supporting base plate 1. One end of the material conveying pipe 4 and the water pipe 5 respectively arranged above and below the cutting chamber 9 are connected to the filtering and drying component 8. A die assembly 10 is installed inside the feeding frame 2. A pelletizing motor 7 is slidably connected to the upper left side of the supporting base plate 1. The right end of the pelletizing motor 7 is connected to the rotating rod 11. The right end of the rotating rod 11 penetrates the interior of the connecting frame 6 and extends into the cutting chamber 9. The right end of the rotating rod 11 is connected to the pelletizing blade 17 fitted on the left side of the die assembly 10. A vibration control component is installed to control the up and down vibration cleaning of the cutting chamber 9; the outer side of the rotating rod 11 is connected to a scraper 12 for auxiliary cleaning through a fixed tube 15, and the outer side of the scraper 12 is in contact with the inner wall of the cutting chamber 9. The inner side of the scraper 12 is connected to a water spray pipe 16 for auxiliary cleaning through a mounting mechanism. Two limiting rods 101 with a "T" shape are symmetrically installed above the supporting base plate 1, and the outer side of the limiting rod 101 is nested with a reset spring 102. The limiting rods 101 are penetrated inside the front and back sides of the cutting chamber 9, and the left and right sides of the cutting chamber 9 are installed with connecting ends 91 made of hose material. The left and right sides of the cutting chamber 9 are respectively connected to the connecting frame 6 and the feeding frame 2 through the connecting ends 91.

[0043] The left side of the die assembly 10 extends into the cutting chamber 9. There is a distance between the outer side of the die assembly 10 and the inner wall of the cutting chamber 9. A water outlet 41 made of a hose material is fixedly passed through the upper right side of the cutting chamber 9. The upper part of the water outlet 41 is connected to a material conveying pipe 4. A water inlet 51 made of a hose material is fixedly passed through the lower right side of the cutting chamber 9. A water guide pipe 5 is connected to the lower part of the water inlet 51. A water inlet pipe 52 made of a hose material is connected to the left side of the water inlet 51. A vertical rod 13 is rotatably connected to the upper interior of the connecting frame 6. The lower end of the vertical rod 13 is connected to the rotating rod 11 through a bevel gear set, and is fixed. The interior of the tube 15 is connected to a piston column 151 through a connecting spring 153. The outer side of the piston column 151 is fitted and connected to the inner wall of the fixed tube 15. A second diversion tube 152 is provided inside the piston column 151. A scraper 12 with a triangular structure is fixed to the outer end of the piston column 151. One end of the second diversion tube 152 is connected to the water spray pipe 16. The other end of the second diversion tube 152 is inserted into the fixed tube 15. A first diversion tube 154 is fixed inside the end of the fixed tube 15 close to the rotating rod 11. Both the first diversion tube 154 and the second diversion tube 152 are installed with a one-way valve.

[0044] A storage chamber 111 is provided inside the left end of the rotating rod 11, and a circle of through holes 112 is provided on the outer side of the left end of the rotating rod 11. A guide frame 14 is installed on the outer side of the left end of the rotating rod 11, and the guide frame 14 is connected to the connecting frame 6. The space in the guide frame 14 is connected to the space in the storage chamber 111 through the through hole 112. The end of the first shunt pipe 154 away from the fixed pipe 15 is inserted into the storage chamber 111. A guide pipe 141 is fixed below the guide frame 14, and the lower end of the guide pipe 141 is connected to the connecting frame 6. The lower surface of the frame 6 is connected to the left end of the water inlet pipe 52, the mounting mechanism includes screws, the water spray pipe 16 is connected to the scraper 12 by screws, the vibration control assembly includes horizontal plates 131 installed at equal intervals on the outside of the upper end of the vertical rod 13, and a second magnet block 132 is installed below the end of the horizontal plate 131 away from the vertical rod 13. The first magnet block 92 is connected to the upper left side of the cutting chamber 9. The first magnet block 92 and the second magnet block 132 have the same magnetic poles, and the lowest point of the second magnet block 132 is higher than the highest point of the first magnet block 92.

[0045] First, the right end of the feed frame 2 is connected to the external twin-screw extruder, and then the start valve 3 is opened, and the material enters the feed frame 2. Then the material is extruded into strips through the die head assembly 10 in the feed frame 2, and then the pelletizing motor 7 drives the rotating rod 11 and the pelletizing blade 17 to rotate to pelletize the material extruded into strips. At the same time, external water enters the cutting chamber 9 through the water pipe 5 and the water inlet 51, so that the water quickly cools and shapes the pelletized material. At the same time, the water and material in the cutting chamber 9 are pumped away through the material conveying pipe 4 and the water outlet 41, thereby avoiding the accumulation of material in the cutting chamber 9 and affecting the later pelletizing operation. Then the material conveying pipe 4 conveys the water and material to the filtering and drying assembly 8, and the water and material are filtered and separated by the filtering and drying assembly 8, and then the material is dried and discharged. (Since this part is the existing technology, it will not be introduced in detail here).

[0046] When the rotating rod 11 rotates, it drives the vertical rod 13 to rotate through the bevel gear set. When the vertical rod 13 rotates, it drives the horizontal plate 131 and the second magnet block 132 in the vibration control assembly to rotate together. Then, the four sets of horizontal plates 131 and the second magnet block 132 rotate in sequence to the top of the first magnet block 92. At this time, a repulsive force is generated between the second magnet block 132 and the first magnet block 92 with the same magnetic poles, so that the first magnet block 92 drives the cutting chamber 9 to move downward. At this time, the front and rear sides of the cutting chamber 9 are outside the limit rod 101. It moves downward, squeezing and accumulating force on the return spring 102. When the second magnet block 132 and the first magnet block 92 are separated, the cutting chamber 9 is automatically driven to rise by the stored force of the return spring 102, so that the cutting chamber 9 can vibrate up and down at a certain height. During the vibration, the material particles will be affected by the inertial force and it will be difficult to approach the inner wall of the cutting chamber 9, thereby preventing the material particles from sticking to the inner wall of the cutting chamber 9. At the same time, the material stuck to the inner wall of the cutting chamber 9 can be shaken off, so it is convenient to clean the inner wall of the cutting chamber 9.

[0047] When the rotating rod 11 rotates, it will drive the fixed pipe 15 and the scraper 12 to rotate together. At this time, the scraper 12 can scrape off the material adhered to the inner wall of the cutting chamber 9 when rotating, so it is convenient to clean the inner wall of the cutting chamber 9. Part of the water in the water inlet 51 enters the guide frame 14 through the water inlet pipe 52 and the guide pipe 141. At this time, the water in the guide frame 14 enters the storage chamber 111 through the through hole 112, and then the water in the storage chamber 111 enters the fixed pipe 15 through the four groups of first diversion pipes 154, and then the water in the fixed pipe 15 enters the water spray pipe 16 through the second diversion pipe 152. The water spray pipe 16 sprays water into the cutting chamber 9. The water flow sprayed from the water spray pipe 16 will form turbulence, which will produce an impact force on the material close to the inner wall of the cutting chamber 9, thereby preventing the material from directly contacting and adhering to the inner wall of the cutting chamber 9.

[0048] When the cutting chamber 9 vibrates up and down, the cutting chamber 9 will apply a thrust to the scraper 12 at the corresponding position, and then the scraper 12 drives the piston column 151 to move into the fixed tube 15. At this time, the piston column 151 will apply pressure to the water in the fixed tube 15. Since both the first diversion tube 154 and the second diversion tube 152 are equipped with one-way valves, the water in the fixed tube 15 quickly enters the second diversion tube 152. Such repeated operations can increase the water flow velocity in the second diversion tube 152, thereby increasing the intensity of the turbulence formed by the water flow sprayed from the water spray pipe 16, thereby further preventing the material from sticking to the inner wall of the cutting chamber 9.

[0049] Example 2: The underwater pelletizer with a cleaning mechanism in this embodiment discloses another structure of the vibration control component. For the specific structure, refer to the attached Figure 9 As shown, the vibration control assembly includes a push rod 133 installed at equal intervals on the outer side of the upper end of the vertical rod 13, and a protrusion 93 is fixed on the upper left side of the cutting chamber 9. The front and rear sides of the protrusion 93 are both inclined, and the highest point of the protrusion 93 is higher than the lowest point of the push rod 133. When the rotating rod 11 rotates, it drives the vertical rod 13 to rotate through the bevel gear set. When the vertical rod 13 rotates, it drives the push rod 133 in the vibration control assembly to rotate, and then the six groups of push rods 133 contact the protrusion 93 in turn. Since the upper part of the protrusion 93 is inclined, when the push rod 133 rotates to contact the protrusion 93, it will apply a downward thrust to the protrusion 93, so that the protrusion 93 drives the cutting chamber 9 to move downward, so that the cutting chamber 9 can perform a certain height of up and down reciprocating vibration, thereby preventing material particles from sticking to the inner wall of the cutting chamber 9, and at the same time, it can also shake off the material stuck to the inner wall of the cutting chamber 9, which is convenient for cleaning the inner wall of the cutting chamber 9.

[0050] Embodiment 3: The underwater pelletizer with a cleaning mechanism in this embodiment can increase the spraying range of the water spray pipe 16 on the basis of embodiment 1, thereby further preventing the material from adhering to the inner wall of the cutting chamber 9. For the specific structure, refer to the attached Figure 10As shown, the mounting mechanism includes bearings mounted on the left and right ends of the water spray pipe 16, and the left and right ends of the water spray pipe 16 are respectively connected to the second diverter pipe 152 and the scraper 12 through bearings. A vortex spring 161 is nested and connected to the outside of the right end of the water spray pipe 16, and a control rope 162 is wound around the outside of the left end of the water spray pipe 16. The end of the control rope 162 away from the water spray pipe 16 is connected to the side of the fixed pipe 15 through a guide wheel. When the cutting chamber 9 applies a thrust to the scraper 12 at the corresponding position, the scraper 12 drives the piston column 151 to move into the fixed pipe 15. At this time, no tension is applied to the control rope 162. At this time, the water spray pipe 1 will be automatically driven by the stored force of the vortex spring 161. 6 performs reverse rotation reset. When the cutting chamber 9 does not apply a thrust to the scraper 12 in the non-corresponding position, the piston column 151 will automatically move outward in the fixed tube 15 through the stored force of the connecting spring 153. At this time, the piston column 151 drives the scraper 12 to move outward. At this time, the control rope 162 will be pulled, and then one end of the control rope 162 drives the water spray pipe 16 to rotate at a certain angle. At the same time, the vortex spring 161 accumulates force, so that the water spray pipe 16 can be driven by the stored force of the vortex spring 161 to perform reciprocating rotation and spray water at a certain angle in the later stage, thereby increasing the spraying range of the water spray pipe 16 and further preventing the material from sticking to the inner wall of the cutting chamber 9.

[0051] 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 scope of protection of the present invention.

Claims

1. An underwater pelletizer provided with a cleaning mechanism, comprising a supporting base plate (1), and a feeding frame (2) mounted above the right side of the supporting base plate (1); A start-up valve (3) for controlling the flow of materials is installed through the upper interior of the feed frame (2); Its characteristics are: A cutting chamber (9) is connected above the support base plate (1), and one end of a material conveying pipe (4) and a water pipe (5) respectively arranged above and below the cutting chamber (9) are connected to a filtering and drying assembly (8); A die assembly (10) is installed inside the feed frame (2), a pelletizing motor (7) is slidably connected to the upper left side of the support base plate (1), the right end of the pelletizing motor (7) is connected to the rotating rod (11), the right end of the rotating rod (11) passes through the interior of the connecting frame (6) and extends into the cutting chamber (9), and the right end of the rotating rod (11) is connected to a pelletizing blade (17) fitted on the left side of the die assembly (10); A vibration control assembly for controlling the up and down vibration cleaning of the cutting chamber (9) is installed above the connection frame (6); The outer side of the rotating rod (11) is connected to a scraper (12) for auxiliary cleaning via a fixed tube (15), the outer side of the scraper (12) is in contact with the inner wall of the cutting chamber (9), and the inner side of the scraper (12) is connected to a water spray pipe (16) for auxiliary cleaning via a mounting mechanism; The interior of the fixed tube (15) is connected to a piston column (151) via a connecting spring (153), a second diversion tube (152) is provided through the interior of the piston column (151), one end of the second diversion tube (152) is connected to the water spray pipe (16), and the other end of the second diversion tube (152) is inserted into the fixed tube (15), and a first diversion tube (154) is fixed through the interior of one end of the fixed tube (15) close to the rotating rod (11); A storage chamber (111) is provided inside the left end of the rotating rod (11), a circle of through holes (112) is provided on the outer side surface of the left end of the rotating rod (11), a guide frame (14) is rotatably installed through the outer side surface of the left end of the rotating rod (11), the guide frame (14) is connected to the connecting frame (6), the space inside the guide frame (14) is connected to the space inside the storage chamber (111) through the through hole (112), and the end of the first diversion pipe (154) away from the fixed pipe (15) is inserted into the storage chamber (111); Wherein, a scraper (12) having a triangular structure is fixed to the outer end of the piston column (151); The mounting mechanism includes bearings mounted on the left and right ends of the water spray pipe (16), the left and right ends of the water spray pipe (16) are respectively connected to the second diversion pipe (152) and the scraper (12) through the bearings, a vortex spring (161) is nested and connected to the outside of the right end of the water spray pipe (16), and a control rope (162) is wound around the outside of the left end of the water spray pipe (16), and the end of the control rope (162) away from the water spray pipe (16) is connected to the side of the fixed pipe (15) through a guide wheel.

2. The underwater pelletizer provided with a cleaning mechanism according to claim 1, characterized in that: Two limiting rods (101) in a "T"-shaped structure are symmetrically installed above the supporting base plate (1), and a return spring (102) is nested and connected to the outer side of the limiting rod (101); Limiting rods (101) are provided through the interior of both the front and rear sides of the cutting chamber (9); Connecting ends (91) made of a hose material are installed on both the left and right sides of the cutting chamber (9), and the left and right sides of the cutting chamber (9) are respectively connected to the connecting frame (6) and the feeding frame (2) through the connecting ends (91).

3. The underwater pelletizer provided with a cleaning mechanism according to claim 1, characterized in that: The left side of the die assembly (10) extends into the cutting chamber (9), and there is a distance between the outer side of the die assembly (10) and the inner wall of the cutting chamber (9); A water outlet (41) made of a hose is fixedly provided on the upper right side of the cutting chamber (9), and a material conveying pipe (4) is connected to the upper side of the water outlet (41); A water inlet (51) made of a hose is fixedly passed through the lower right side of the cutting chamber (9), a water guide pipe (5) is connected below the water inlet (51), and a water inlet pipe (52) made of a hose is connected to the left side of the water inlet (51).

4. The underwater pelletizer provided with a cleaning mechanism according to claim 1, characterized in that: A vertical rod (13) is rotatably connected to the upper interior of the connection frame (6), and the lower end of the vertical rod (13) is connected to the rotating rod (11) via a bevel gear set.

5. The underwater pelletizer provided with a cleaning mechanism according to claim 3, characterized in that: The outer side surface of the piston column (151) is in close contact with the inner wall of the fixed tube (15); One-way valves are installed in both the first diversion pipe (154) and the second diversion pipe (152).

6. The underwater pelletizer provided with a cleaning mechanism according to claim 5, characterized in that: A flow guide pipe (141) is fixed below the flow guide frame (14), and the lower end of the flow guide pipe (141) passes through the lower surface of the connecting frame (6) and is connected to the left end of the water inlet pipe (52).

7. The underwater pelletizer provided with a cleaning mechanism according to claim 4, characterized in that: The vibration control assembly comprises horizontal plates (131) installed at equal intervals on the outer sides of the upper ends of the vertical rods (13), and a second magnet block (132) is installed below one end of the horizontal plate (131) away from the vertical rods (13); A first magnet block (92) is connected to the upper left side of the cutting chamber (9), the first magnet block (92) and the second magnet block (132) have the same magnetic poles, and the lowest point of the second magnet block (132) is higher than the highest point of the first magnet block (92).

8. The underwater pelletizer provided with a cleaning mechanism according to claim 4, characterized in that: The vibration control assembly includes push rods (133) installed at equal intervals on the outer side of the upper end of the vertical rod (13), and a protrusion (93) is fixed on the upper left side of the cutting chamber (9), and the front and rear sides of the protrusion (93) are both inclined; The highest point of the projection (93) is higher than the lowest point of the push rod (133).

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