Automatic metering device for mud curing agent production materials
By employing methods such as preheating, stirring, vibration, and scraping, the problem of sludge-state solidifying agent retention within the device was solved, improving metering accuracy and discharge efficiency, and achieving efficient metering of sludge-state solidifying agent.
Patent Information
- Application Number
- CN202511520484.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-02-24
AI Technical Summary
Existing automatic metering devices for producing mud-like curing agents may cause some curing agent to remain when metering mud-like materials, reducing the metering accuracy and discharge efficiency of the device.
The system employs a preheating mixing mechanism, a feeding vibration mechanism, and a discharging cleaning mechanism. By heating, vibrating, and scraping, the flowability and metering accuracy of the curing agent are improved. This is achieved through the coordinated use of components such as a preheating mixing rod, a vibrating mixing rod, a transverse moving rod, an ultrasonic vibrating rod, a bottom-contacting push plate, and an edge-scraping rod.
It improved the fluidity of the mud-like curing agent, reduced the accumulation of curing agent in the device, improved metering accuracy and discharge efficiency, and ensured the normal operation of the device.
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Figure CN121558145A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of raw material metering equipment technology, specifically to an automatic metering device for the production of mud-state curing agents. Background Technology
[0002] Curing agents, also known as hardeners, curing agents, or stabilizers, are substances or mixtures that promote or control the curing reaction. Curing agents are essential additives in the resin curing process. Whether used as adhesives, coatings, or casting materials, curing agents must be added; otherwise, epoxy resin cannot cure. However, the resin curing process has certain requirements on the amount of curing agent used, so it is necessary to measure and dispense the curing agent.
[0003] Patent application CN221764592U discloses an automatic metering device for curing agent production, including a metering mechanism, a sealing component, the sealing component being installed on the upper end of one side of the metering mechanism, a moving component, two sets of the moving component being movably connected to the inner wall of the metering mechanism, and a movable component being movably connected inside the metering mechanism and located in the middle area between the two moving components.
[0004] When the metering device provided by this patent is used to meter muddy materials, some muddy solidifying agent may remain inside the device as the muddy material flows inside, reducing the consistency of the material feed and thus reducing the metering accuracy of the device. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this invention provides an automatic metering device for the production of mud-state curing agents, thereby solving the problems mentioned in the background section.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic metering device for producing mud-state curing agents, comprising a preheating box, a temperature sensor embedded inside the preheating box, a feeding box connected to the top of the preheating box, the top of the feeding box connected to a curing agent conveying mechanism, a metering box connected to the bottom of the preheating box, a controller provided on the front of the metering box, a preheating stirring mechanism rotatably connected inside the preheating box, and a feeding vibration mechanism rotatably connected inside the feeding box;
[0007] The preheating and stirring mechanism includes:
[0008] A hollow rotating shaft is rotatably connected to the inside of the preheating box. A rectangular through hole is opened on the outer surface of the hollow rotating shaft, and a circular blind hole is opened on the right side of the hollow rotating shaft. The hollow rotating shaft is the core of the entire preheating and stirring mechanism.
[0009] A vibrating stirring rod, comprising a follower blade, the follower blade being slidably connected inside a rectangular blind hole of a hollow rotating shaft, and a stirring scraper being fixedly connected to the end of the follower blade.
[0010] Preferably, an AC motor is fixedly connected to the left side of the hollow rotating shaft. The motor is electrically connected to the controller via a wire. A sealing head is fixedly connected inside the follower rod blade. The sealing head is used to seal the gap between the vibrating stirring rod and the preheating box. A linkage rotating plate is fixedly connected to the right side of the follower rod blade.
[0011] Preferably, the linkage rotating plate is rotatably connected to the right side of the preheating box via a spring, a cam motor is fixedly connected to the top of the metering box, the cam motor is located at the bottom of the linkage rotating plate, the cam motor is electrically connected to the controller via a wire, and a heater is fixedly connected inside the follower rod blade, the heater is electrically connected to the controller via a wire.
[0012] Preferably, the feeding vibration mechanism includes a transverse rod, which is rotatably connected inside the feeding box and slidably connected to the feeding box. The left side of the transverse rod is slidably connected to the feeding box via a spring. An ultrasonic vibration rod is fixedly connected to the left side of the feeding box, which is rotatably connected inside the transverse rod and electrically connected to the controller via a wire.
[0013] Preferably, a vibrating scraper is fixedly connected to the bottom of the transverse rod. The vibrating scraper includes a bottom bracket, which is fixedly connected to the bottom of the transverse rod. Side contact plates are fixedly connected to the left and right sides of the bottom bracket. Vibration sensors are embedded at the ends of the side contact plates. The vibration sensors are electrically connected to the controller through wires. A transmission pulley is fixedly connected to the right side of the transverse rod. The transmission pulley is rotatably connected to the right side of the linkage rotating plate through a belt.
[0014] Preferably, a discharge cleaning mechanism is fixedly connected to the front of the metering box. The discharge cleaning mechanism includes a discharge plate, which includes a bottom-touching push plate. A push rod is fixedly connected to the back of the bottom-touching push plate. The push rod is slidably connected to the metering box. The push rod can be a hydraulic cylinder or an electric push rod. A triangular scraper is fixedly connected to the bottom of the front of the bottom-touching push plate for scraping the curing agent at the bottom of the inner wall of the metering box. A vibration motor is fixedly connected to the bottom of the metering box and is electrically connected to a controller via a wire. A capacitive height sensor is fixedly connected to the top of the inner wall of the metering box for detecting the height of the curing agent in the metering box.
[0015] Preferably, a sealing plate is slidably connected to the top of the metering box. The sealing plate includes an active plate with teeth on its top. The top of the active plate meshes with a toothed column, which is driven by a motor. An edge sealing slide is slidably connected to the top of the metering box. The edge sealing slide is fixedly connected to the top of the metering box by a spring and is located on the back of the active plate. Heating plates are fixedly connected to the left and right sides of the metering box, and a temperature sensor is embedded inside the metering box.
[0016] Preferably, a side scraper is slidably connected to the top of the inner wall of the metering box. The side scraper includes a scraping rod frame, which is slidably connected to the top of the inner wall of the metering box. A sliding heating rod is fixedly connected to the top of the scraping rod frame. An electric heating tube is embedded inside the sliding heating rod. A hydraulic cylinder is fixedly connected to the top of the sliding heating rod. An electric push rod may also be fixedly connected to the top of the sliding heating rod.
[0017] This invention provides an automatic metering device for the production of mud-state solidification agents. It has the following beneficial effects:
[0018] 1. This automatic metering device for producing mud-like curing agents, by setting up a preheating and stirring mechanism, uses a vibrating stirring rod in conjunction with a preheating box and heater to heat the mud-like curing agent to improve its fluidity. At the same time, the stirring accelerates the temperature rise of the curing agent, improving the heating effect of the device on the curing agent, reducing the accumulation and retention of the curing agent in the device, and helping to improve the metering accuracy of the device.
[0019] 2. This automatic metering device for producing mud-state curing agent uses a feeding vibration mechanism, a transverse rod in conjunction with a vibration bracket and an ultrasonic vibration rod, and centrifugal vibration and ultrasonic vibration to loosen the mud-state curing agent retained during the feeding process. In addition, it is combined with a preheating and stirring mechanism to further improve the fluidity of the mud-state curing agent, thereby helping to improve the metering accuracy of the device and improve the discharge efficiency of the device.
[0020] 3. This automatic metering device for producing mud-state curing agent, by setting up a feeding vibration mechanism, uses a vibrating stirring rod in conjunction with a transverse moving rod to achieve simultaneous feeding cleaning and preheating before metering. Furthermore, the hot air in the preheating box can promote the flowability of the curing agent attached to the feeding box, thereby assisting the feeding vibration mechanism in cleaning the attached curing agent and improving the working efficiency of the device.
[0021] 4. This automatic metering device for producing mud-state curing agent, by setting up a discharge cleaning mechanism, utilizes a bottom pusher plate in conjunction with a sealing plate, a heating plate, and a discharge gate to achieve material discharge using a combination of physical and pneumatic pushing, thereby improving the discharge efficiency of the device and reducing the residue of curing agent inside the device. The bottom pusher plate, in conjunction with a side scraper and a vibration motor, cleans the curing agent accumulated at the edge of the metering box, further improving the metering accuracy of the device. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0023] Figure 2 This is a rear view of the overall structure of the device of the present invention;
[0024] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the preheating box of the present invention;
[0025] Figure 4 This is a schematic diagram of the overall structure of the vibrating stirring rod of the present invention;
[0026] Figure 5 This is a schematic diagram showing the positional relationship between the vibrating stirring rod and the feeding vibration mechanism of the present invention;
[0027] Figure 6 This is a cross-sectional view of the overall internal structure of the present invention;
[0028] Figure 7 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the diagram;
[0029] Figure 8 This is a cross-sectional view of the internal structure of the metering box of the present invention;
[0030] Figure 9 For the present invention Figure 6 Enlarged schematic diagram of the structure at point B in the diagram;
[0031] Figure 10 This is a schematic diagram of the overall structure of the sealing plate of the present invention;
[0032] Figure 11 This is a schematic diagram of the overall structure of the side scraper of the present invention.
[0033] In the diagram: 1. Preheating box; 2. Feeding box; 3. Metering box; 4. Controller; 5. Preheating and stirring mechanism; 51. Hollow rotating shaft; 52. Vibrating stirring rod; 521. Follower rod blade; 522. Stirring scraper; 523. Sealing head; 524. Linkage rotating plate; 53. Heater; 6. Feeding vibration mechanism; 61. Transverse rod; 62. Vibrating scraper; 621. Bottom bracket; 622. Side contact plate; 63. Ultrasonic vibrating rod; 64. Transmission pulley; 7. Discharge and cleaning mechanism; 71. Discharge plate; 711. Bottom push plate; 712. Push rod; 72. Sealing plate; 721. Active plate; 722. Edge sealing slide plate; 73. Heating plate; 74. Side scraper; 741. Edge scraper frame; 742. Sliding heating rod; 75. Discharge gate. Detailed Implementation
[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0035] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.
[0036] Example 1
[0037] Please see Figure 1-4 The present invention provides a technical solution: an automatic metering device for producing mud-state curing agent, including a preheating box 1, a temperature sensor embedded inside the preheating box 1, a feeding box 2 connected to the top of the preheating box 1, the top of the feeding box 2 connected to the conveying mechanism of the curing agent, a metering box 3 connected to the bottom of the preheating box 1, and a controller 4 set on the front of the metering box 3.
[0038] The mud-like curing agent easily adheres to the surface of the internal mechanisms of the device, affecting the metering accuracy and normal operation of the device. To improve the flowability of the mud-like curing agent and facilitate metering, a preheating stirring mechanism 5 is rotatably connected inside the preheating box 1. The preheating stirring mechanism 5 includes:
[0039] Hollow rotating shaft 51 is rotatably connected to the inside of preheating box 1. A rectangular through hole is opened on the outer surface of hollow rotating shaft 51, and a circular blind hole is opened on the right side of hollow rotating shaft 51. Hollow rotating shaft 51 is the core of the entire preheating stirring mechanism 5. An electric motor is fixedly connected to the left side of hollow rotating shaft 51. The electric motor is an AC motor and is electrically connected to controller 4 through wires.
[0040] The vibrating stirring rod 52 includes a follower blade 521, which is slidably connected to the inside of the rectangular blind hole of the hollow rotating shaft 51. A stirring scraper 522 is fixedly connected to the end of the follower blade 521. A sealing head 523 is fixedly connected inside the follower blade 521. The sealing head 523 is used to seal the gap between the vibrating stirring rod 52 and the preheating box 1. A linkage rotating plate 524 is fixedly connected to the right side of the follower blade 521. The linkage rotating plate 524 is rotatably connected to the right side of the preheating box 1 by a spring. A cam motor is fixedly connected to the top of the metering box 3. The cam motor is located at the bottom of the linkage rotating plate 524. The cam motor is electrically connected to the controller 4 through a wire.
[0041] Heater 53 is fixedly connected inside the follower rod 521. Heater 53 is electrically connected to controller 4 through wires.
[0042] When in use, after the device is started, when the mud-like curing agent is inside the metering tank 3, the controller 4 controls the motor to drive the hollow rotating shaft 51 to rotate. The rotation of the hollow rotating shaft 51 drives the vibrating stirring rod 52 to rotate. The stirring scraper 522 scrapes the inside of the metering tank 3, and the follower blade 521 stirs the mud-like curing agent inside the metering tank 3. At the same time, the controller 4 controls the heater 53 to be powered on. After the heater 53 is powered on, the heat is transferred to the mud-like curing agent and the air inside the metering tank 3 through the vibrating stirring rod 52, thereby raising the temperature of the mud-like curing agent and increasing its fluidity.
[0043] After the device is started, the controller 4 controls the cam motor to start. The cam motor periodically moves the linkage plate 524, which drives the follower rod 521 to slide laterally back and forth. The lateral sliding and rotation work together to generate periodic vibration inside the metering box 3, which in turn works with the stirring scraper 522 to scrape off the attached curing agent.
[0044] Example 2
[0045] Please see Figure 1-7 Based on Embodiment 1, the present invention provides a technical solution: Since the temperature of the mud-like solidifying agent entering the device does not rise much, its fluidity is limited, easily causing the mud-like solidifying agent to adhere to the inside of the feed box 2. Loosening the sticky mud-like solidifying agent, a feeding vibration mechanism 6 is rotatably connected inside the feed box 2. The feeding vibration mechanism 6 includes a transverse rod 61, which is rotatably connected inside the feed box 2 and slidably connected to the feed box 2. The left side of the transverse rod 61 is slidably connected to the feed box 2 via a spring. A vibrating scraper 62 is fixedly connected to the bottom of the transverse rod 61. The vibrating scraper 62 includes a bottom bracket 621. 1. A side contact plate 622 is fixedly connected to the bottom of the horizontal moving rod 61. The side contact plate 622 is fixedly connected to the left and right sides of the bottom bracket 621. A vibration sensor is embedded at the end of the side contact plate 622. The vibration sensor is electrically connected to the controller 4 through a wire. An ultrasonic vibration rod 63 is fixedly connected to the left side of the feed box 2. The ultrasonic vibration rod 63 is rotatably connected to the inside of the horizontal moving rod 61. The ultrasonic vibration rod 63 is electrically connected to the controller 4 through a wire. A transmission pulley 64 is fixedly connected to the right side of the horizontal moving rod 61. The transmission pulley 64 is rotatably connected to the right side of the linkage rotating plate 524 through a belt. The right side of the transmission pulley 64 is fixedly connected to the right side of the linkage rotating plate 524 through a connecting plate.
[0046] In use, during the rotation and sliding of the vibrating stirring rod 52 in Embodiment 1, the linkage rotating plate 524 drives the transmission pulley 64 to rotate and also drives the transmission pulley 64 to periodically slide laterally. The transmission pulley 64 drives the transverse rod 61 to periodically slide and rotate. The transverse rod 61 drives the vibrating scraper 62 to periodically slide and rotate. The bottom bracket 621 periodically scrapes the front and back of the inner wall of the feed box 2, and the side contact plate 622 periodically scrapes the left and right sides of the inner wall of the feed box 2.
[0047] During the movement of the transverse rod 61, the ultrasonic vibration rod 63 is powered on and emits ultrasonic waves under the control of the controller 4. The ultrasonic waves are transmitted to the vibrating scraper 62 through the transverse rod 61, and then transmitted to the inner wall of the feed box 2 by the vibrating scraper 62, thereby helping to loosen the sticky curing agent.
[0048] During this process, the hot air inside the metering box 3 moves upward, appropriately raising the temperature of the inner wall surface of the feed box 2, thereby helping to loosen the sticky curing agent inside the feed box 2.
[0049] Example 3
[0050] Please see Figure 1-11 Based on Embodiments 1 and 2, the present invention provides a technical solution: When discharging after metering, some mud-like solidifying agent may remain inside the metering box 3, affecting the actual discharge amount and reducing the metering accuracy of the device. To reduce the amount of solidifying agent residue inside the metering box 3, a discharge cleaning mechanism 7 is fixedly connected to the front of the metering box 3. The discharge cleaning mechanism 7 includes a discharge plate 71, which includes a bottom-touching push plate 711. A push rod 712 is fixedly connected to the back of the bottom-touching push plate 711. The push rod 712 is slidably connected to the metering box 3. The push rod 712 is a hydraulic cylinder or an electric push rod. A triangular scraper is fixedly connected to the bottom of the front of the bottom-touching push plate 711 for scraping the solidifying agent at the bottom of the inner wall of the metering box 3. A vibration motor is fixedly connected to the bottom of the metering box 3. The vibration motor is electrically connected to the controller 4 through a wire. A capacitive height sensor is fixedly connected to the top of the inner wall of the metering box 3 for detecting the height of the solidifying agent inside the metering box 3.
[0051] A pressure sensor is embedded inside the metering box 3. A sealing plate 72 is slidably connected to the top of the metering box 3. The sealing plate 72 includes an active plate 721. The top of the active plate 721 has teeth. The top of the active plate 721 meshes with the toothed column. The toothed column is driven by a motor. An edge sealing slide plate 722 is slidably connected to the top of the metering box 3 to prevent the curing agent from remaining in the sliding gap of the active plate 721 and affecting the operation of the device. The edge sealing slide plate 722 is fixedly connected to the top of the metering box 3 by a spring. The edge sealing slide plate 722 is located on the back of the active plate 721. Heating plates 73 are fixedly connected to the left and right sides of the metering box 3. A temperature sensor is embedded inside the metering box 3.
[0052] A side scraper 74 is slidably connected to the top of the inner wall of the metering box 3. The side scraper 74 includes a scraper rod frame 741, which is slidably connected to the top of the inner wall of the metering box 3. A sliding heating rod 742 is fixedly connected to the top of the scraper rod frame 741. An electric heating tube is embedded inside the sliding heating rod 742. A hydraulic cylinder is fixedly connected to the top of the sliding heating rod 742. An electric push rod can also be fixedly connected to the top of the sliding heating rod 742. A discharge door 75 is slidably connected to the back of the metering box 3. A hydraulic cylinder is fixedly connected to the top of the discharge door 75. An electric push rod can also be fixedly connected to the top of the discharge door 75.
[0053] In use, in Example 1, the temperature sensor inside the preheating box 1 senses the ambient temperature inside the preheating box 1 in real time. When the ambient temperature inside the preheating box 1 reaches the set range, the controller 4 determines that preheating is complete. The controller 4 controls the motor to drive the gear column to rotate. The gear column drives the active plate 721 to slide outward. After the active plate 721 slides outward, the metering box 3 is connected to the preheating box 1, and the curing agent flows into the metering box 3.
[0054] During this process, the controller 4 controls the heating plate 73 to be powered on and heated so that the temperature inside the metering box 3 rises and the flow state of the curing agent is maintained. The capacitive height sensor monitors the height of the curing agent in real time. When the detected height data reaches the set value, the controller 4 controls the motor to reverse and the active plate 721 pushes the sealing slide plate 722 to slide backward, sealing the metering box 3 with the outside world.
[0055] Subsequently, the controller 4 controls the push rod 712 to push the bottom push plate 711 to slide backward, the air pressure inside the metering box 3 increases, and the curing agent slides backward under the combined action of air pressure and bottom push plate 711. When the air pressure data fed back by the air pressure sensor of the metering box 3 reaches the set value, the discharge door 75 slides upward, and the curing agent flows out from the discharge door 75 into the subsequent processing mechanism. During this process, the vibration motor is powered on and started under the control of the controller 4, and the vibration is transmitted to the inner wall of the metering box 3 to promote the loosening of the sticky curing agent.
[0056] After the bottom-touching push plate 711 moves to its limit position, the push rod 712 drives the bottom-touching push plate 711 to reset. After the bottom-touching push plate 711 resets, the scraping rod 741 slides downward under the push of the sliding hot rod 742 to scrape off the residual curing agent on the inner wall side of the metering box 3. During the pushing process of the scraping rod 741, the sliding hot rod 742 is energized and heats up. The heat is transferred to the scraping rod 741 through the sliding hot rod 742. When the scraping rod 741 comes into contact with the curing agent, the curing agent heats up and its fluidity increases, thereby promoting the scraping process.
[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. An automatic metering device for producing mud-state solidifying agents, comprising a preheating box (1), wherein a temperature sensor is embedded inside the preheating box (1), a feeding box (2) is connected to the top of the preheating box (1), and a metering box (3) is connected to the bottom of the preheating box (1), characterized in that: The preheating box (1) is rotatably connected to a preheating stirring mechanism (5), and the feeding box (2) is rotatably connected to a feeding vibration mechanism (6). The preheating and stirring mechanism (5) includes: A hollow rotating shaft (51) is rotatably connected to the inside of the preheating box (1), and a rectangular through hole is provided on the outer surface of the hollow rotating shaft (51). Vibrating stirring rod (52), the vibrating stirring rod (52) includes follower rod blade (521), the follower rod blade (521) is slidably connected to the inside of the rectangular blind hole of the hollow rotating shaft (51), and the end of the follower rod blade (521) is fixedly connected to a stirring scraper (522).
2. The automatic metering device for producing mud-state curing agents according to claim 1, characterized in that: A sealing head (523) is fixedly connected inside the follower rod (521), and a linkage rotating plate (524) is fixedly connected to the right side of the follower rod (521).
3. The automatic metering device for producing mud-state curing agents according to claim 2, characterized in that: The linkage rotating plate (524) is rotatably connected to the right side of the preheating box (1) via a spring, and a heater (53) is fixedly connected inside the follower rod (521).
4. The automatic metering device for producing mud-state curing agents according to claim 3, characterized in that: The feeding vibration mechanism (6) includes a transverse rod (61), which is rotatably connected to the inside of the feeding box (2). The transverse rod (61) is slidably connected to the feeding box (2). An ultrasonic vibration rod (63) is fixedly connected to the left side of the feeding box (2), and the ultrasonic vibration rod (63) is rotatably connected to the inside of the transverse rod (61).
5. The automatic metering device for producing mud-state curing agents according to claim 4, characterized in that: The bottom of the transverse rod (61) is fixedly connected to a vibrating scraper (62), which includes a bottom bracket (621). The bottom bracket (621) is fixedly connected to the bottom of the transverse rod (61). Side contact plates (622) are fixedly connected to the left and right sides of the bottom bracket (621). A transmission pulley (64) is fixedly connected to the right side of the transverse rod (61). The transmission pulley (64) is rotatably connected to the right side of the linkage rotating plate (524) via a belt.
6. The automatic metering device for producing mud-state curing agents according to claim 1, characterized in that: The metering box (3) is fixedly connected to the front of the discharge cleaning mechanism (7), which includes a discharge plate (71), a bottom-touching push plate (711), a push rod (712) fixedly connected to the back of the bottom-touching push plate (711), and a vibration motor fixedly connected to the bottom of the metering box (3).
7. The automatic metering device for producing mud-state curing agents according to claim 6, characterized in that: The metering box (3) is slidably connected to a sealing plate (72) on the top. The sealing plate (72) includes an active plate (721). The metering box (3) is slidably connected to a sealing plate (722) on the top. The sealing plate (722) is fixedly connected to the top of the metering box (3) by a spring. The metering box (3) is fixedly connected to a heating plate (73) on the left and right sides.
8. The automatic metering device for producing mud-state curing agents according to claim 7, characterized in that: A side scraper (74) is slidably connected to the top of the inner wall of the metering box (3). The side scraper (74) includes a scraper frame (741). The scraper frame (741) is slidably connected to the top of the inner wall of the metering box (3). A sliding heating rod (742) is fixedly connected to the top of the scraper frame (741). An electric heating tube is embedded inside the sliding heating rod (742).
Citation Information
Patent Citations
Automatic metering device for curing agent production materials
CN221764592U