Water ring pelletizing cutter winding detection device

Abstract

The invention discloses a water ring pelletizing cutter winding detection device which comprises a travel switch, the travel switch is connected with a detection rod, and the detection rod can shake to trigger the travel switch; a mounting plate is connected below the travel switch, a sealing rubber seat is connected to the bottom of the mounting plate, and the sealing rubber seat is connected with the pelletizing cavity; one end of the detection rod extends into the pelletizing cavity, and the end part of the detection rod is located on one side of the blade and is spaced from the blade; the blade is connected to a pelletizing motor shaft; the detection rod is connected with the travel switch, the travel switch can be driven to open and close when the detection rod is impacted by cutter winding materials and adhesively swings, cutter winding signals are transmitted through opening and closing of the travel switch, cutter winding in the pelletizing process can be found in time, a machine can be stopped in time to replace a cutter, and cutting efficiency is improved. Equipment is prevented from being damaged by the winding cutter, time wasted for cleaning winding cutter materials is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of water ring pelletizing, and in particular relates to a water ring pelletizing knife entanglement detection device. Background Art

[0002] During the water ring pelletizing process, the material will stick together due to the quality and temperature of the material, the flow and pressure of the cooling water, and the speed coordination of the pelletizing motor, and solidify on the pelletizing blade or the inner wall of the pelletizing chamber, resulting in the phenomenon of blade entanglement. During the blade entanglement process, the motor resistance will continue to increase until the motor current overload alarm causes the equipment to automatically stop running. Not only will the blade entanglement process cause the motor overload and affect the motor life, but also, when cleaning the blade entanglement material, the blade, blade clamping mechanism, pelletizing motor spindle, etc. will often be damaged, and manpower will be wasted, affecting the normal production time. The earlier the blade entanglement process is discovered, the more the above problems can be alleviated.

[0003] The polyoxymethylene produced by the existing water ring pelletizer does not have a corresponding knife entanglement detection device. For this reason, we provide a water ring pelletizer knife entanglement detection device. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a water ring pelletizing knife entanglement detection device, which can detect the occurrence of knife entanglement as early as possible, and at least solve one of the background technical problems.

[0005] The present invention provides the following technical solutions: A water ring pelletizing knife entanglement detection device comprises a travel switch, the travel switch is connected to a detection rod, and the shaking of the detection rod can trigger the travel switch; A mounting plate is connected below the travel switch, a sealing rubber seat is connected to the bottom of the mounting plate, and the sealing rubber seat is connected to the pelletizing cavity; One end of the detection rod extends into the pelletizing cavity, and the end of the detection rod is located on one side of the blade and is set at a gap with the blade; The blade is connected to the pelletizing motor shaft.

[0006] Preferably, a through hole is opened on the mounting plate, the detection rod is arranged through the through hole, and the detection rod is arranged through the sealing rubber seat.

[0007] Preferably, a rotating shaft is provided inside the sealing rubber seat, the detection rod is arranged inside the rotating shaft, inner grooves are symmetrically opened on the inner side wall of the sealing rubber seat, and the rotating shaft is arranged inside the inner groove.

[0008] Preferably, a pneumatic quick connector is provided below the rotating shaft, the pneumatic quick connector is arranged on the outside of the detection rod and is sealed with the detection rod; the end of the pneumatic quick connector away from the rotating shaft is sealed with a PU air source tube, the PU air source tube is sleeved on the outside of the detection rod, and the lower end of the PU air source tube is flush with the end of the detection rod.

[0009] Preferably, the upper end of the sealing rubber seat is a plane, and the lower end is an arc surface that fits with the pelletizing cavity. An elongated through hole is opened on the side of the sealing rubber seat near one end of the arc surface, and a sealing slide is arranged through the through hole. The width of the through hole is the thickness of the sealing slide, and the commercial length of the through hole is the width of the sealing slide. The opening path of the through hole is arc-shaped, and the radius of the arc is the distance from the center of the groove in the end of the sealing rubber seat near the plane to the through hole; the sealing slide is arc-shaped, and the curvature is consistent with the curvature of the opening path of the through hole of the rubber sealing seat. The sealing slide has a central opening, and the opening diameter is equal to the diameter of the PU air source pipe.

[0010] Preferably, a tightening rod is provided on the side wall of the mounting plate, a hole is provided at one end of the tightening rod close to the detection rod, and the detection rod is arranged in the hole; a thread is provided at the other end of the tightening rod, and an adjusting nut is provided on the tightening rod, which is rotatably connected to the mounting plate through the thread.

[0011] Preferably, a plurality of equal-diameter long holes are provided on one side of the mounting plate close to the travel switch, the travel switch is connected to the mounting plate through bolts and the long holes, and the position of the travel switch can be adjusted.

[0012] Preferably, the pelletizing motor shaft is arranged at the center of the pelletizing cavity, the outer side wall of the pelletizing motor shaft is connected with a clamping plate, the clamping plate clamps the blade by bolts, and the detection rod is arranged on one side of the blade along the length direction of the pelletizing motor shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses a water ring pelletizing knife wrapping detection device, which connects a detection rod with a travel switch. When the detection rod is hit, adhered and swung by knife wrapping materials, the travel switch can be driven to open and close. The knife wrapping signal is transmitted through the opening and closing of the travel switch, so that the occurrence of knife wrapping in the pelletizing process can be discovered in time, and the knife can be stopped and replaced in time, so as to avoid the knife wrapping damaging the equipment and save the time wasted in cleaning the knife wrapping materials, thereby improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the pelletizing cavity of the present invention.

[0016] Figure 2 It is a schematic diagram of the AA cross-sectional structure of the present invention.

[0017] Figure 3It is a schematic diagram of the enlarged structure of the B part of the present invention.

[0018] Figure 4 It is a schematic diagram of the overall structure of the detection device of the present invention.

[0019] Figure 5 It is a cross-sectional front view of the detection device of the present invention.

[0020] Figure 6 It is a left view of the detection device of the present invention.

[0021] Figure 7 It is a schematic diagram of the cross-sectional structure of the rotating shaft of the present invention.

[0022] Figure 8 It is a schematic diagram of the mounting plate structure of the present invention.

[0023] Fig. 9 It is a schematic diagram of the structure of the detection rod of the present invention.

[0024] Fig.10 It is a schematic diagram of the sealing slide structure of the present invention.

[0025] Fig.11 It is a schematic diagram of the rotating shaft structure of the present invention.

[0026] Fig.12 It is a structural schematic diagram of the sealing rubber seat of the present invention.

[0027] Fig.13 It is a schematic diagram of the PU air source pipe structure of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0030] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention. Example

[0031] refer to Figure 1-3 , a water ring pelletizing knife winding detection device, comprising a travel switch 5, the travel switch 5 is connected to a detection rod 7, and the shaking of the detection rod 7 can trigger the travel switch 5; A mounting plate 1 is connected below the travel switch 5, a sealing rubber seat 3 is connected to the bottom of the mounting plate 1, and the sealing rubber seat 3 is connected to the pelletizing cavity 12; One end of the detection rod 7 extends into the pelletizing cavity 12, and the end of the detection rod 7 is located on one side of the blade 15, with a gap between the blade 15 and the end of the detection rod 7; The blade 15 is connected to the pelletizing motor shaft 13 .

[0032] The pelletizing motor shaft 13 is arranged at the center of the pelletizing cavity 12. The outer wall of the pelletizing motor shaft 13 is connected with a clamping plate 14. The clamping plate 14 clamps the blade 15 through bolts. The detection rod 7 is arranged on one side of the blade 15 along the length direction of the pelletizing motor shaft 13. The length of the detection rod 7 ensures that its end is about centimeters away from the main shaft of the pelletizing motor. The installation position ensures that the detection rod 7 is 5 to 10 mm away from the blade back. After the blade is wrapped, the sticky material on the blade 15 will stick to and hit the detection rod 7. After the detection rod 7 is stuck and hit, it swings with the rotating shaft 6 as the axis, and the swing drives the travel switch 5 to open and close. Example

[0033] See also Figure 4-13 A through hole is opened on the mounting plate 1, and the detection rod 7 is arranged through the through hole, and the detection rod 7 is arranged through the sealing rubber seat 3.

[0034] The sealing rubber seat 3 is provided with a rotating shaft 6 inside, and the detection rod 7 is arranged inside the rotating shaft 6 through. The inner side wall of the sealing rubber seat 3 is symmetrically provided with inner grooves, and the rotating shaft 6 is arranged inside the inner grooves.

[0035] A pneumatic quick connector 8 is provided below the rotating shaft 6, and the pneumatic quick connector 8 is arranged on the outside of the detection rod 7 and is sealed with the detection rod 7; the end of the pneumatic quick connector 8 away from the rotating shaft 6 is sealed with a PU air source tube 9, and the PU air source tube 9 is sleeved on the outside of the detection rod 7, and the lower end of the PU air source tube 9 is flush with the end of the detection rod 7.

[0036] The upper end of the sealing rubber seat 3 is a plane, and the lower end is an arc surface that fits the pelletizing cavity 12. The side of the sealing rubber seat 3 near one end of the arc surface has an elongated through hole, and a sealing slide 4 is arranged through the through hole. The width of the through hole is the thickness of the sealing slide 4, and the commercial length of the through hole is the width of the sealing slide 4. The through hole opening path is an arc, and the radius of the arc is the distance from the center of the groove in the end of the sealing rubber seat near the plane to the through hole; the sealing slide 4 is an arc, and the arc is consistent with the arc of the opening path of the rubber sealing seat through hole. The center of the sealing slide 4 has an opening, and the opening diameter is equal to the diameter of the PU air source pipe 9. One end of the sealing rubber seat 3 is a plane, and the other end is an arc surface that fits the pelletizing cavity 12. After installation, it forms a seal with the pelletizing cavity 12. The side of the sealing rubber seat 3 is provided with an elongated through hole, the width of the through hole section is the thickness of the sealing slide 4, and the length is the width of the sealing slide 4. The detection rod 7 is inserted into the central hole of the sealing slide 4. When the detection rod 7 swings, it can drive the sealing slide 4 to slide in the side through hole of the sealing rubber seat 3 and form a seal to prevent the cooling water in the pelletizing cavity 12 from flowing out. The PU air source pipe 9 is sleeved on the detection rod 7 through the pneumatic quick connector 8. When the detection device is stuck by the material, it can be quickly handled by replacing the PU air source pipe 9; The side wall of the mounting plate 1 is provided with a tension rod 2, and one end of the tension rod 2 close to the detection rod 7 is provided with a hole, and the detection rod 7 is arranged in the hole; the other end of the tension rod 2 is provided with a thread, and the tension rod 2 is provided with an adjusting nut 11, which is rotatably connected with the mounting plate 1 through the thread. One end of the pre-tightening rod with a hole is sleeved on the detection rod 7, and the other end has a thread for installing a nut. By adjusting the adjusting nut 11, a pre-tightening force can be applied to the detection rod 7 to offset the impact force of the cooling water during the water ring pelletizing process and other forces that affect the swing of the detection rod 7.

[0037] A plurality of equal-diameter long holes are provided on one side of the mounting plate 1 close to the travel switch 5. The travel switch 5 is connected to the mounting plate 1 by bolts and the long holes, and the position of the travel switch 5 can be adjusted. The mounting plate 1 is provided with four equal-diameter long holes for installing and adjusting the position of the travel switch 5. By adjusting the position of the travel switch 5, the sensitivity of the detection device can be adjusted.

[0038] In addition, the travel switch 5 is connected to the parking control circuit and the alarm circuit, the water ring pelletizing system is normally turned on, the position and swing of the detection rod 7 are observed, and the adjustment nut 11 is slowly adjusted from the natural state of the spring 10 to restore the travel switch 5 to the initial state, and the detection rod 7 has no obvious swing. When the knife is entangled, the travel switch 5 transmits the signal to the parking circuit and the alarm circuit. After the staff finds the alarm, they will replace the spare knife and the PU air source pipe 9 in time, avoiding equipment damage and time waste of cleaning materials.

[0039] Specifically, the method used by the device to detect the occurrence of the knife entanglement phenomenon as early as possible is as follows: The device is installed on the outside of the pelletizing cavity 12. During installation, the detection rod 7 with the PU air source tube 9 will extend into the pelletizing cavity 12, 5 to 10 mm away from the tail of the pelletizing blade 15. When the material is adhered, the material will be thrown out along the blade 15 in the opposite direction of the rotation of the blade 15. At this time, the material will hit and stick to the PU air source tube 9. The PU air source tube 9 is hit and stuck by the material wrapped around the blade, and can swing together with the detection rod 7. The detection rod 7 is connected to the travel switch 5. When the detection rod 7 is hit and stuck by the material wrapped around the blade, it can drive the switch to open and close, and transmit the signal of the blade wrapping by opening and closing the switch. The preload force of the spring 10 is adjusted to offset the gravity and the impact force of the cooling water on the detection rod 7, so as to prevent the detection rod 7 from swinging due to other forces; The four equal-diameter long holes on the mounting plate 1 are used to install and adjust the position of the travel switch 5. The sensitivity of the travel switch can be adjusted by adjusting the position of the travel switch 5. The preload rod 2 has one end with a hole on the detection rod, and the other end has a thread for installing a nut. Its main function is to cooperate with the mounting plate 1 and the spring 10 to provide preload force for the detection rod 7 to offset the impact force of the water ring pelletizing cooling water and the gravity of the detection rod 7. Figure 2 The locking nut shown adjusts the preload. The inner cavity size of the sealing rubber seat 3 should be set to a suitable value on the basis of ensuring that the swing amplitude of the detection rod can make the travel switch 5 open and close, such as Figure 2The sealing rubber seat 3 shown in the figure has a plane at one end and an arc surface that fits the pelletizing cavity at the other end, which ensures the sealing of the cooling water of the water ring pelletizing. The sealing rubber seat 3 has an elongated through hole on the side near one end of the arc surface. The width of the through hole is the thickness of the sealing slide 4, and the length is the width of the sealing slide 4. The opening path of the through hole is an arc. The radius of the arc is the distance from the center of the inner groove at the plane end of the sealing rubber seat 3 to the through hole. The function of the through hole is to cooperate with the sealing slide 4 to seal the cooling water of the water ring pelletizing. The inner groove is for installing the rotating shaft 6. The sealing slide 4 is an arc, and the arc is consistent with the arc of the opening path of the through hole of the rubber sealing seat 3. The surface is smooth and convenient for sliding between the rectangular through holes of the sealing rubber seat 3. The center of the sealing slide 4 has an opening, and the opening diameter is equal to the diameter of the PU air source pipe 9. The length of the sealing slide 4 should ensure that the swing of the detection rod does not affect its sealing of the cooling water. The rotating shaft 6 cooperates with the detection rod 7 and the sealing rubber seat 3, and can swing when the end of the detection rod 7 is adhered by the material. The length of the detection rod 7 shown ensures that its end is about 1 cm away from the main shaft of the pelletizing motor, and the connection between the detection rod 7 and the pneumatic quick connector 8 is a threaded connection. The pneumatic quick connector 8 cooperates with the detection rod 7 and the rotating shaft 6 to limit the axial displacement of the detection rod 7, and the connection between the pneumatic quick connector 8 and the PU air source pipe 9 is convenient for disassembly. The PU air source pipe 9 fits tightly with the detection rod 7. When the material adheres to the PU air source pipe 9, it will drive the detection rod to swing, and the swing of the detection rod can drive the opening and closing of the travel switch 5, thereby transmitting a signal.

[0040] When installing the detection device, calculate the distance and open a long hole on the pelletizing cavity. The position of the hole should ensure that the center of the detection rod 7 is 5 to 10 mm away from the clamping part on the back of the blade. The width of the hole should be 1 to 2 mm larger than the diameter of the PU air source tube 9. The length of the hole is equal to the maximum length of the inner cavity of the sealing rubber seat 3. Four screw rods are welded with the center of the hole as the center. The position and size of the screw rods match the four equal-diameter holes of the sealing rubber seat 3.

[0041] The sealing rubber seat 3 is installed on the four welded screw rods, and during the installation, the side of the sealing rubber seat 3 matching the shape of the pelletizing cavity is directed toward the pelletizing cavity.

[0042] Insert the sealing slide 4 into the sealing rubber seat 3 .

[0043] Install the rotating shaft 6, pneumatic quick connector 8, and PU air source pipe 9 on the detection rod 7 in sequence. Then insert the assembled parts into the center hole of the sealing slide 4, and put the rotating shaft into the groove of the rubber sealing seat 3 at the same time.

[0044] Assemble the preload rod 2 with the mounting plate 1 and the spring. The spring should be in a natural state. Then insert the mounting plate 1 and the preload rod 2 from above the detection rod in turn, and install the mounting plate 1 on the pre-welded screw rod of the pelletizing cavity, and fix it and the rubber sealing seat to the outside of the pelletizing cavity with a nut. Figure 1shown.

[0045] Finally, the travel switch 5 is mounted on the mounting plate 1 with bolts and nuts.

[0046] After installation, start the water ring pelletizing system normally, observe the position and swing of the detection rod, and slowly adjust the locking nut 11 of the spring 10 so that the travel switch is in the initial state and the detection rod has no obvious swing.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. 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 water ring pelletizing knife entanglement detection device, comprising a travel switch (5), It is characterized in that The travel switch (5) is connected to a detection rod (7), and shaking of the detection rod (7) can trigger the travel switch (5); A mounting plate (1) is connected below the travel switch (5), a sealing rubber seat (3) is connected to the bottom of the mounting plate (1), and the sealing rubber seat (3) is connected to the pelletizing chamber (12); One end of the detection rod (7) extends into the pelletizing cavity (12), and the end of the detection rod (7) is located on one side of the blade (15) and is spaced apart from the blade (15); The blade (15) is connected to the pelletizing motor shaft (13).

2. A water ring pelletizing knife entanglement detection device according to claim 1, It is characterized in that The mounting plate (1) is provided with a through hole, the detection rod (7) is arranged through the through hole, and the detection rod (7) is arranged through the sealing rubber seat (3).

3. A water ring pelletizing knife entanglement detection device according to claim 2, It is characterized in that The sealing rubber seat (3) is provided with a rotating shaft (6) inside, the detection rod (7) is arranged through the rotating shaft (6), the inner side wall of the sealing rubber seat (3) is symmetrically provided with inner grooves, and the rotating shaft (6) is arranged inside the inner grooves.

4. A water ring pelletizing knife entanglement detection device according to claim 3, It is characterized in that A pneumatic quick connector (8) is provided below the rotating shaft (6), and the pneumatic quick connector (8) is arranged on the outside of the detection rod (7) and is sealed and connected to the detection rod (7); one end of the pneumatic quick connector (8) away from the rotating shaft (6) is sealed and connected to a PU air source pipe (9), and the PU air source pipe (9) is sleeved on the outside of the detection rod (7), and the lower end of the PU air source pipe (9) is flush with the end of the detection rod (7).

5. A water ring pelletizing knife entanglement detection device according to claim 4, It is characterized in that The upper end of the sealing rubber seat (3) is a plane, and the lower end is an arc surface that fits with the pelletizing cavity (12). The sealing rubber seat (3) has an elongated through hole on the side near one end of the arc surface, and a sealing slide (4) is arranged through the through hole. The width of the through hole is the thickness of the sealing slide (4), and the length of the through hole is the width of the sealing slide (4). The through hole opening path is an arc, and the radius of the arc is the distance from the center of the inner groove of the sealing rubber seat (3) near the plane end to the through hole. The sealing slide (4) is an arc, and the arc is consistent with the arc of the opening path of the rubber sealing seat through hole. The center of the sealing slide (4) has a hole, and the opening diameter is equal to the diameter of the PU air source pipe (9).

6. A water ring pelletizing knife entanglement detection device according to claim 1, It is characterized in that The side wall of the mounting plate (1) is provided with a tightening rod (2), one end of the tightening rod (2) close to the detection rod (7) is provided with a hole, and the detection rod (7) is arranged in the hole; the other end of the tightening rod (2) is provided with a thread, and the tightening rod (2) is provided with an adjusting nut (11), which is rotatably connected to the mounting plate (1) through the thread; the tightening rod (2) is provided with a spring (10), and the spring (10) is arranged between the adjusting nut (11) and the mounting plate (1).

7. A water ring pelletizing knife entanglement detection device according to claim 1, It is characterized in that A plurality of equal-diameter long holes are provided on one side of the mounting plate (1) close to the travel switch (5); the travel switch (5) is connected to the mounting plate (1) through bolts matching the long holes, and the position of the travel switch (5) can be adjusted.

8. A water ring pelletizing knife entanglement detection device according to claim 1, It is characterized in that The pelletizing motor shaft (13) is arranged at the center of the pelletizing chamber (12); the outer wall of the pelletizing motor shaft (13) is connected with a clamping plate (14); the clamping plate (14) clamps the blade (15) through bolts; and the detection rod (7) is arranged on one side of the blade (15) along the length direction of the pelletizing motor shaft (13).

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