Observation window for roller equipment

Abstract

The invention relates to an observation window for roller equipment. The observation window comprises an observation window body, a scraping plate, a driving part, an air injection assembly and a thickness detection element. The scraping plate can be driven by the driving piece to scrape off sheltering objects on the surface of the observation window body; the air injection assembly is used for blowing away sheltering objects on the surface of the observation window body. The air injection assembly comprises a pressure air source and an air injection element; the air injection element is communicated with a pressure air source, an air outlet faces the surface of the observation window body, and the air injection element is installed on the scraper and can move along with the scraper; the thickness detection element is used for detecting the thickness of a shielding object on the surface of the observation window body and starting the driving part and / or the air injection assembly according to a measured value of the thickness detection element. According to the observation window, the resistance of the scraper blade during working can be reduced, the service life of the driving part is prolonged, the cleaning effect on the surface of the observation window body is provided, and the blowing range and the blowing effect of the air spraying element can be improved on the basis that the air spraying element is integrated on the scraper blade.

Description

Technical Field

[0001] The present invention relates to the field of material processing equipment, in particular to an observation window for roller equipment. Background Art

[0002] During cigarette production, tobacco or stem shreds are typically rehumidified or dried using a drum-type tobacco drying machine. Chinese invention patent No. CN203828043U discloses a drum-type tobacco shred rehumidification machine, which includes a drum, a circulating air duct, and feed and discharge hoods located at both ends of the drum. Tobacco or stem shreds enter the drum through the feed hood, undergo drying or rehumidification within the drum, and are then discharged through the discharge hood, which serves as the discharge end cap. The discharge hood is equipped with a maintenance door and a light. The maintenance door is equipped with an observation window. The light illuminates the observation window, allowing workers to observe and monitor the drum's production process in a timely and convenient manner. When this type of drum rehumidifier is in use, the circulating air duct draws air from the drum's discharge hood toward the drum's feed hood. A heating device is installed in the circulating duct to heat the air. The high-temperature air entering from the feed hood heats the tobacco or stems in the drum. As the tobacco or stems in the drum rotate with the drum and flow through the drum with the circulating air, they easily adhere to the inner surface of the observation window on the discharge end cap, covering it and obstructing the operator's view of the drum, significantly impacting their monitoring and observation. This problem urgently needs to be addressed. Summary of the Invention

[0003] The invention discloses an observation window for roller equipment, aiming to solve the technical problems existing in the prior art.

[0004] The present invention adopts the following technical solutions:

[0005] The present invention provides an observation window for a roller device, which includes an observation window body, a scraper, a driving member, a jet assembly and a thickness detection element; the scraper can scrape off obstructions on the surface of the observation window body under the drive of the driving member; the jet assembly is used to blow off obstructions on the surface of the observation window body; the jet assembly includes a pressure air source and a jet element; the jet element is connected to the pressure air source, and the air outlet is facing the surface of the observation window body, the jet element is installed on the scraper and can move with the scraper; the thickness detection element is used to detect the thickness of obstructions on the surface of the observation window body, and start the driving member and / or the jet assembly according to the measurement value of the thickness detection element.

[0006] In the observation window for the roller equipment of the present invention, the scraper is arranged on one side surface of the observation window body; the driving member is arranged on the other side of the observation window body, and the driving end passes through the observation window body and is fixedly connected to the scraper to drive the scraper to move along the surface of the observation window body, and the driving end of the driving member is sealed with the observation window body through a sealing member.

[0007] In the observation window for the drum equipment of the present invention, the sealing member is a graphite-ceramic composite sealing ring.

[0008] In the observation window for the roller equipment of the present invention, the scraper includes a support plate made of a hard material and a flexible surface layer; the support plate is a long strip structure with an "L"-shaped cross-section, and one side is arranged to fit the surface of the observation window body; the edge of the flexible surface layer is sealed to the edge of the support plate to form a accommodating space inside; the accommodating space is connected to the pressure gas source.

[0009] In the observation window for the drum device of the present invention, the accommodating space is further connected to an exhaust pipe and a first valve; one end of the exhaust pipe is connected to the accommodating space, and the other end is connected to the outside; the first valve is arranged on the exhaust pipe.

[0010] In the observation window for the roller equipment of the present invention, the scraper is a long strip structure with a triangular cross-section, including a bottom surface that is in contact with the surface of the observation window body and a scraping surface that is arranged at an acute angle to the bottom surface. The interior of the scraper is a hollow structure; the hollow structure is connected to the pressure air source; at least an air outlet connected to the hollow structure is provided on the scraping surface.

[0011] In the observation window for the roller equipment of the present invention, an air suction hole is provided on the bottom surface; one end of the air suction hole is connected to the outside world, and the other end is connected to the thinnest part of the connecting channel on the scraper connecting the hollow structure and the outside world, so as to form a negative pressure at the air suction hole when the connecting channel is ventilated.

[0012] In the observation window for the drum device of the present invention, the driving member is a stepping motor.

[0013] The observation window for the drum device of the present invention further includes a controller; the controller is electrically connected to the driving member, the jet assembly and the thickness detection element to control the start and stop of the driving member and the jet assembly based on the detection value of the thickness detection element.

[0014] In the observation window for a drum device of the present invention, the thickness detection element is an infrared thickness measuring element.

[0015] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0016] The present invention mainly provides an observation window for a roller device, which is based on setting a scraper to scrape off obstructions on the surface of the observation window body, and cooperating with a jet component to blow away the obstructions on the surface of the observation window body. It can reduce the resistance of the scraper during operation, increase the service life of the driving part, and provide a cleaning effect and observability of the surface of the observation window body. In addition, based on the integration of the jet element on the scraper, the blowing range and blowing effect of the jet element can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments, which constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the main structure of an observation window for a drum device of the present invention;

[0019] Figure 2 This is a schematic diagram of the upward structure of an observation window for a drum device of the present invention;

[0020] Figure 3 This is a schematic diagram of the connection structure between the jet element and the scraper of the present invention;

[0021] Figure 4 Schematic diagram of the structure of a preferred embodiment of the present invention;

[0022] Figure 5 It is a structural schematic diagram of another preferred embodiment of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the scraper of the present invention.

[0024] Description of reference numerals:

[0025] 1. Observation window body; 2. Scraper; 21. Support plate; 22. Flexible surface; 23. Exhaust pipe; 24. First valve; 25. Bottom surface; 26. Scraping surface; 27. Air outlet; 27A. First air outlet; 27B. Second air outlet; 28. Air intake hole; 29. ​​Connecting channel; 3. Driving part; 4. Jet assembly; 41. Pressure air source; 42. Jet element; 5. Thickness detection element; 6. Sealing element; 7. Controller. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. In the description of the present invention, it should be noted that the term "or" is generally used in the sense of including "and / or" unless the content clearly indicates otherwise.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a magnetic connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly specified and limited.

[0028] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. 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.

[0029] In order to solve the problems existing in the prior art, an embodiment of the present application provides an observation window for a drum device.

[0030] This embodiment provides an observation window for a drum device, such as Figure 1 、 Figure 2 and Figure 3 As shown, it includes an observation window body 1, a scraper 2, a driving member 3, an air jet assembly 4, and a thickness detection element 5. The scraper 2, driven by the driving member 3, can scrape away obstructions on the surface of the observation window body 1. The air jet assembly 4 is used to blow away obstructions on the surface of the observation window body 1. The air jet assembly 4 includes a pressure gas source 41 and an air jet element 42. The air jet element 42 is connected to the pressure gas source 41, with its air outlet facing the surface of the observation window body 1, and is mounted on the scraper 2 and can move with the scraper 2. The thickness detection element 5 is used to detect the thickness of obstructions on the surface of the observation window body 1 and activate the driving member 3 and / or the air jet assembly 4 based on the value measured by the thickness detection element 5. Optionally, the pressure gas source 41 can be a pressure tank or an external pressure gas source. The specific pressure value of the pressure gas can be determined according to the working conditions, such as 0.2 MPa. The air jet element 42 can be a nozzle, preferably, disposed on the scraper 2 so as to move with the scraper 2, thereby further improving the cleaning effect.

[0031] An observation window for a roller device of the present invention is based on the arrangement of a scraper 2 to scrape off obstructions on the surface of the observation window body 1, and is coordinated with a jet component 4 to blow away and off obstructions on the surface of the observation window body 1. This can reduce the resistance of the scraper 2 during operation, increase the service life of the driving component 3, and improve the cleaning effect and observability of the surface of the observation window body 1. In addition, based on the integration of the jet element 42 on the scraper 2, the blowing range and blowing effect of the jet element 42 can be improved.

[0032] In some preferred embodiments, Figure 2 As shown, the scraper 2 is arranged on one side surface of the observation window body 1 and is arranged in contact with the surface of the observation window body 1; the driving member 3 is arranged on the other side of the observation window body 1, and the driving end passes through the observation window body 1 and is fixedly connected to the scraper 2 to drive the scraper 2 to move along the surface of the observation window body 1, and the driving end of the driving member 3 is sealed with the observation window body 1 through the sealing member 6; specifically, the driving member 3 can be selected as a motor, and the rotating shaft passes through the observation window body 1 and is connected to the scraper 2. At this time, the length of the scraper 2 is the same as the diameter of the circular observation window body 1 and is arranged along the diameter. The rotating shaft passes through the sealing member 6 from the center of the circular observation window body 1 to seal between the rotating shaft and the observation window body 1, for example, a conventional dynamic sealing structure is adopted for sealing.

[0033] Preferably, the driving member 3 is a stepper motor, since the stepper motor can control the output torque and rotation speed.

[0034] Preferably, the sealing member 6 is a graphite-ceramic composite sealing ring, such as a graphite silicon carbide ceramic rotary sealing ring or a sealing ring with a ceramic inner ring and a graphite outer ring.

[0035] In some preferred embodiments, Figure 4 As shown, the scraper 2 includes a support plate 21 of a hard material (such as a metal material, such as stainless steel or other hard materials) and a flexible surface layer 22, such as a rubber material layer or other flexible material layer; the support plate 21 is a long strip structure with an "L"-shaped cross-section, and one side is arranged to fit the surface of the observation window body 1; the edge of the flexible surface layer 22 is sealed and connected to the edge of the support plate 21 to form a accommodating space inside; the accommodating space is connected to the pressure air source 41; based on this, the accommodating space can be inflated by the pressure air source 41 to prop up the flexible surface layer 22. At this time, the accommodating space is not filled with gas in the initial state, so as to remove the obstructions accumulated on the surface of the flexible surface layer 22, reduce the resistance during scraping, reduce energy consumption, improve efficiency and cleaning effect, that is, avoid the accumulated materials from falling on the surface of the observation window body 1 again.

[0036] Preferably, the accommodating space is also connected to an exhaust pipe 23 and a first valve 24; one end of the exhaust pipe 23 is connected to the accommodating space, and the other end is connected to the outside world; the first valve 24 is arranged on the exhaust pipe 23; based on the discharge of gas in the accommodating space through the exhaust pipe 23 and the first valve 24, the flexible surface layer 22 can switch between pressurization and exhaust retraction, which can improve the effect of removing obstructions accumulated on the surface of the flexible surface layer 22.

[0037] In some preferred embodiments, Figure 5 and Figure 6 As shown, the scraper 2 is a long strip structure with a triangular cross-section, including a bottom surface 25 that fits the surface of the observation window body 1 and a scraping surface 26 that is set at an acute angle to the bottom surface 25. The interior of the scraper 2 is a hollow structure; the hollow structure is connected to the pressure air source 41; at least an air outlet 27 that is connected to the hollow structure is provided on the scraping surface 26; based on the use of a long strip structure with a triangular cross-section as the scraper 2, the resistance during the scraping process can be reduced, and based on the provision of the air outlet 27 on the scraping surface 26, the obstructions accumulated on the surface of the scraping surface 26 can be blown away, avoiding the accumulation of obstructions that increase the movement resistance and increase energy consumption, and based on the blowing away of the obstructions, it can also be avoided that the obstructions fall onto the surface of the observation window body 1, thereby improving the cleaning effect.

[0038] Preferably, there are multiple air outlet holes 27, including a first air outlet hole 27A with its outlet facing the surface of the observation window body 1 and a second air outlet hole 27B deviating from the surface of the observation window body 1. That is, the first air outlet hole 27A facing the surface of the observation window body 1 can play a role in blowing away the obstructions on the surface of the observation window body 1, can replace the jet element 42, and can improve the blowing effect, while the second air outlet hole 27B deviating from the surface of the observation window body 1, that is, the direction of the air outlet does not intersect with the surface of the observation window body 1, can blow away the obstructions to avoid accumulation.

[0039] Further preferably, the air outlet holes 27 include a row of holes along the scraping surface 26 adjacent to the surface of the observation window body 1, wherein the air outlet holes 27 facing the surface of the observation window body 1 and the air outlet holes 27 offset from the surface of the observation window body 1 are alternately arranged to blow away the accumulation on the scraping surface 26 close to the surface of the observation window body 1 and ensure the effect of blowing away the obstructions on the surface of the observation window body 1.

[0040] Preferably, the bottom surface 25 is provided with an air intake hole 28; one end of the air intake hole 28 is connected to the outside world, and the other end is connected to the thinnest part of the connecting channel 29 on the scraper 2 connecting the hollow structure and the outside world, so that a negative pressure is formed at the air intake hole 28 when the connecting channel 29 is ventilated, that is, the scraper 2 can be adsorbed on the surface of the observation window body 1, reducing the gap between the scraper 2 and the surface of the observation window body 1, and avoiding the residue of small obstructions; specifically, the formation of negative pressure should not affect the normal movement of the scraper 2.

[0041] Preferably, the scraping surface 26 is made of a flexible material, that is, the scraper 2 includes a support plate 21 made of a hard material (such as a metal material, such as stainless steel or other hard materials) and a flexible surface layer 22, such as a rubber material layer or other flexible material layer; the support plate 21 is a long strip structure with an "L"-shaped cross-section, and one side is arranged to fit the surface of the observation window body 1; the edge of the flexible surface layer 22 is sealed and connected to the edge of the support plate 21 to form a structure similar to a accommodating space inside, and air outlet holes 27 are provided on the flexible surface layer 22, thereby further improving the cleaning effect, reducing the residual obstructions on the scraping surface 26, and reducing the pressure of the pressurized gas required to blow away the obstructions on the scraping surface 26, thereby reducing the distribution density of the air outlet holes 27.

[0042] In some preferred embodiments, the thickness detection element 5 is an infrared thickness measurement element.

[0043] In some preferred embodiments, a controller 7 is further included; the controller 7 is electrically connected to the driving member 3 and the jet assembly 4, specifically, the control valve and the thickness detection element 5 of the jet assembly 4 are connected to control the start and stop of the driving member 3 and the jet assembly 4 based on the detection value of the thickness detection element 5, such as when the thickness of the obstruction is greater than or equal to 0.3 mm, the driving member 3 and the jet assembly 4 are started; specifically, the driving member 3 is controlled to make the speed of the scraper 2: 5-15 r / min, and the driving torque of the driving member 3: 1.5-3 N·m; and the driving member 3 and the jet assembly 4 are started once every 30-120 seconds to ensure cleaning; specifically, the controller 7 can be selected as a PLC controller, and the specific control method can refer to the existing technology, which will not be elaborated here.

[0044] The self-cleaning observation window of the present invention can realize automatic cleaning, save manpower, reduce labor intensity, and increase the viewing time to more than 95%, while the current maximum viewing time ratio is only 70%.

[0045] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. An observation window for a drum device, characterized in that: It includes an observation window body, a scraper, a driving part, an air jet assembly and a thickness detection element; The scraper can scrape away obstructions on the surface of the observation window body under the drive of the driving member; The jet assembly is used to blow away obstructions on the surface of the observation window body; the jet assembly includes a pressure air source and a jet element; The jet element is connected to the pressure gas source, and the gas outlet faces the surface of the observation window body. The jet element is installed on the scraper and can move with the scraper; The thickness detection element is used to detect the thickness of the obstruction on the surface of the observation window body, and the driving member and / or the jet assembly is started according to the measurement value of the thickness detection element.

2. The observation window for drum equipment according to claim 1, characterized in that: The scraper is arranged on one side surface of the observation window body; the driving member is arranged on the other side of the observation window body, and the driving end passes through the observation window body and is fixedly connected to the scraper to drive the scraper to move along the surface of the observation window body, and the driving end of the driving member is sealed with the observation window body through a sealing member.

3. The observation window for drum equipment according to claim 2, characterized in that: The sealing element is a graphite-ceramic composite sealing ring.

4. The observation window for drum equipment according to claim 1, characterized in that: The scraper includes a support plate made of a hard material and a flexible surface layer; The support plate is an L-shaped long strip structure, one side of which is arranged in contact with the surface of the observation window body; The edge of the flexible surface layer is sealed and connected to the edge of the support plate to form a receiving space inside; The accommodating space is connected to the pressure gas source.

5. The observation window for drum equipment according to claim 4, characterized in that: The accommodating space is also connected to an exhaust pipe and a first valve; One end of the exhaust pipe is connected to the accommodation space, and the other end is connected to the outside world; The first valve is arranged on the exhaust pipe.

6. The observation window for drum equipment according to claim 1, characterized in that: The scraper is a long strip structure with a triangular cross section, comprising a bottom surface that fits the surface of the observation window body and a scraping surface that is arranged at an acute angle to the bottom surface, and the interior of the scraper is a hollow structure; The hollow structure is connected to the pressure gas source; At least the scraping surface is provided with an air outlet hole communicated with the hollow structure.

7. The observation window for drum equipment according to claim 6, characterized in that: The bottom surface is provided with an air suction hole; one end of the air suction hole is connected to the outside world, and the other end is connected to the thinnest part of the connecting channel connecting the hollow structure and the outside world on the scraper, so as to form a negative pressure at the air suction hole when the connecting channel is ventilated.

8. The observation window for a drum device according to any one of claims 1 to 7, characterized in that: The driving component is a stepping motor.

9. The observation window for a drum device according to any one of claims 1 to 7, characterized in that: It also includes a controller; the controller is electrically connected to the driving member, the jet assembly and the thickness detection element to control the start and stop of the driving member and the jet assembly based on the detection value of the thickness detection element.

10. The observation window for a drum device according to any one of claims 1 to 7, characterized in that: The thickness detection element is an infrared thickness measuring element.

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