Anti-blocking device of a stem and leaf removing machine

Abstract

The application discloses a kind of anti-blocking devices of stem and leaf removing machine, and the stem and leaf removing machine is equipped with primary screen.The anti-blocking device includes two-dimensional moving platform arranged on stem and leaf removing machine and cleaning and blowing mechanism arranged thereon.The cleaning and blowing mechanism includes distributor arranged below the primary screen and at least one spray head arranged on the top of the distributor, and the internal cavity of the distributor is communicated with external gas source through gas delivery pipe, and the spray head is directed to the primary screen.In use, the cleaning and blowing mechanism is driven by two-dimensional moving platform to move below the screen, and the upwardly sprayed gas flow of the spray head can automatically and continuously remove the tobacco stem jammed in the screen holes without stopping, solve the problem of screen interception failure caused by blockage, and ensure the continuity and stability of the separation process of stem and leaf removing machine.

Description

Technical Field

[0001] This application relates to the field of tobacco machinery technology, specifically to an anti-clogging device for a stem removal machine. Background Technology

[0002] In tobacco processing, the stem removal machine is a key piece of equipment for achieving efficient separation of tobacco stems and leaves. It typically employs a two-stage screening structure, where the primary screen is mainly responsible for intercepting and removing smaller, finer stems to ensure the purity of the final tobacco product. The stable operation of this stage has a decisive impact on the processing quality and efficiency of the entire production line.

[0003] However, in actual production, some irregularly shaped or oversized tobacco stems are very prone to getting stuck in the mesh of the primary screen. This sticking phenomenon quickly reduces the effective filtration area of ​​the primary screen, significantly reducing or even completely eliminating its core function of intercepting small tobacco stems, thus causing an abnormally high tobacco stem content in subsequent processes.

[0004] Therefore, this application proposes an anti-clogging device for a stem removal machine, which can automatically and continuously remove tobacco stems stuck on the primary screen without stopping the machine, so as to ensure the stability and continuity of the separation effect of the stem removal machine. Utility Model Content

[0005] The main objective of this application is to provide an anti-clogging device for a stem removal machine, which aims to solve the technical problem of failure of the primary screen interception function caused by large tobacco stem blockage.

[0006] To achieve the above objectives, this application provides the following technical solution: An anti-clogging device for a stem removal machine, the stem removal machine being equipped with a primary screen, the anti-clogging device comprising: A two-dimensional mobile platform is mounted on the stump removal machine; A cleaning mechanism, located on the two-dimensional moving platform, includes a distributor located below the primary screen and at least one nozzle located on top of the distributor. The distributor has an internal cavity that is connected to an external air source via an air supply pipe. Each nozzle is connected to the cavity and faces the primary screen. The mechanism is used to spray gas to remove blockages from the primary screen.

[0007] As a further improvement of this application, the dispenser is a horizontally extending strip structure, and multiple nozzles are arranged along the extending direction of the dispenser; the cleaning mechanism also includes a servo motor mounted on the two-dimensional moving platform, the servo motor having its shaft facing upward and connected to one end of the dispenser.

[0008] As a further improvement of this application, the two-dimensional mobile platform includes a first translation mechanism; the first translation mechanism has a first support cylinder horizontally disposed below the servo motor and sealed at both ends, a first lead screw coaxial with the first support cylinder and disposed therein, a first slider threaded onto the first lead screw, and a first motor whose working end is coaxially connected to one end of the first lead screw; the inner wall of the first support cylinder and the first slider have a non-circular cross-section along the axial direction of the first lead screw.

[0009] As a further improvement of this application, the first translation mechanism also has a first connecting frame with a U-shaped structure, and the side wall of the first support cylinder is provided with a first limiting groove communicating with its interior, the first limiting groove extending along the axial direction of the first support cylinder; one end of the first connecting frame is connected to the first slider through the first limiting groove, and the other end is located on the first support cylinder and connected to the servo motor.

[0010] As a further improvement of this application, the two-dimensional moving platform includes a second translation mechanism; the second translation mechanism has a second support cylinder horizontally disposed below the first support cylinder and sealed at both ends, a second lead screw coaxial with and disposed within the second support cylinder, a second slider threaded onto the second lead screw, and a second motor whose working end is coaxially connected to one end of the second lead screw; the axis of the second support cylinder and the axis of the first support cylinder are perpendicular to each other in the horizontal plane; the inner wall of the second support cylinder and the second slider have a non-circular cross-section along the axial direction of the second lead screw.

[0011] As a further improvement of this application, the second translation mechanism also has an L-shaped second connecting frame and a support plate; the second support cylinder is provided with second limiting grooves communicating with its interior on both sides of the first support cylinder along the axial direction, and the second limiting grooves extend along the axial direction of the second support cylinder; the support plate is located between the first support cylinder and the second support cylinder, and is connected to the bottom of the first support cylinder through a connecting column; the support plate is connected to one end of the two connecting frames respectively, and the other end of the two connecting frames is connected to the second slider through the two second limiting grooves respectively.

[0012] As a further improvement of this application, the anti-blocking device of the stalk removal machine also includes a fixed seat, and the two ends of the second support cylinder are respectively mounted on the stalk removal machine through the fixed seat.

[0013] The technical solution provided in this application may include the following beneficial effects: During use, this application utilizes a two-dimensional moving platform mounted on the stem removal machine to drive the cleaning mechanism. This allows the cleaning mechanism to move regularly along the lower part of the primary screen, covering the entire area of ​​the screen. Simultaneously, the cleaning mechanism distributes high-pressure gas from an external air source evenly to each nozzle via a distributor, forming a continuous upward concentrated airflow that directly acts on the bottom surface of the screen. This automatically and promptly removes the tobacco stems stuck in the mesh without interrupting production, preventing the primary screen from failing due to blockage. This ensures a continuous and stable separation effect for the stem removal machine and solves the problem of frequent shutdowns for cleaning required by traditional equipment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of an anti-clogging device for a stalk removal machine; Figure 2 yes Figure 1 3D structural diagram of a 2D mobile platform Figure 1 ; Figure 3 yes Figure 1 3D structural diagram of a 2D mobile platform Figure 2 ; Figure label: 100. Two-dimensional moving platform; 101. First translation mechanism; 1011. First support cylinder; 1011a. First limiting groove; 1012. First lead screw; 1013. First slider; 1014. First motor; 1015. First connecting frame; 102. Second translation mechanism; 1021. Second support cylinder; 1021a. Second limiting groove; 1022. Second lead screw; 1023. Second slider; 1024. Second motor; 1025. Second connecting frame; 1026. Support plate; 300. Fixed seat; 200. Cleaning mechanism; 201. Distributor; 202. Air supply pipe; 203. Nozzle; 204. Servo motor. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0017] Figure 1 An embodiment of an anti-clogging device for a peduncles removal machine according to this application is shown. See also Figure 1 In this embodiment, the stem removal machine is equipped with a primary screen; the anti-clogging device includes a two-dimensional moving platform 100 on the stem removal machine and a cleaning mechanism 200 on the two-dimensional moving platform 100.

[0018] Among them, see Figure 1 The cleaning mechanism 200 includes a distributor 201 located below the primary screen. The distributor 201 has an internal cavity and is connected to an external air source via an air supply pipe 202. At least one nozzle 203 is mounted on the top of the distributor 201, and all nozzles 203 are connected to the cavity with their nozzles pointing vertically upwards towards the primary screen. When the external air source continuously supplies high-pressure gas, the airflow is concentrated and ejected upwards from the nozzles 203 through the cavity of the distributor 201, forming a strong airflow that directly acts on the bottom of the screen, instantly blowing away the tobacco stems stuck in the mesh. This design allows the device, driven by the two-dimensional moving platform 100, to automatically and continuously clean the entire screen area, thus solving the fundamental problem of screen blockage leading to interception failure without requiring machine shutdown, and ensuring the continuity and stability of the stem removal process.

[0019] Further, see Figure 2 The distributor 201 adopts a horizontally extending strip structure, with multiple nozzles 203 spaced apart along its length at its top. The cleaning mechanism 200 is also equipped with a servo motor 204, which is fixed above the two-dimensional moving platform 100. Its output shaft is vertically upward and connected to one end of the distributor 201 along its length to drive the distributor 201 to swing.

[0020] Further, see Figure 2The two-dimensional mobile platform 100 includes a first translation mechanism 101. The first translation mechanism 101 mainly consists of a first support cylinder 1011 arranged laterally and sealed at both ends. Inside the cylinder is a first lead screw 1012 coaxial with the cylinder body. A first slider 1013 is threaded onto the first lead screw 1012, one end of which is coaxially connected to the output shaft of a first motor 1014 to receive power. The inner wall of the first support cylinder 1011 and the first slider 1013 are fitted with a non-circular cross-section, effectively restricting the slider from rotating with the lead screw and ensuring that it can only move linearly along the lead screw axis.

[0021] As an alternative implementation, the first support cylinder 1011 can be a regular square prism structure. In this case, its inner wall and the cross-section of the first slider 1013 in the screw axis are also regular squares, forming a stable anti-rotation fit.

[0022] Further, see Figure 2 The first translation mechanism 101 is also equipped with a U-shaped first connecting frame 1015. A first limiting groove 1011a extending axially is provided on the side wall of the first support cylinder 1011, communicating with the internal space of the cylinder. One end of the first connecting frame 1015 passes through the first limiting groove 1011a and is fixedly connected to the internal first slider 1013, while the other end extends upwards above the first support cylinder 1011 and is reliably connected to the aforementioned servo motor 204, thereby converting the linear motion of the slider into the lateral movement of the entire cleaning mechanism 200.

[0023] Further, see Figure 3 The two-dimensional moving platform 100 also includes a second translation mechanism 102. This second translation mechanism 102 is located below the first support cylinder 1011 and its structure includes a second support cylinder 1021 sealed at both ends, a second lead screw 1022 disposed inside the cylinder and coaxial with the cylinder body, a second slider 1023 threaded onto the second lead screw 1022, and a second motor 1024 whose output shaft is coaxially connected to one end of the second lead screw 1022 to provide power. The axis of the second support cylinder 1021 is perpendicular to the axis of the first support cylinder 1011 in the horizontal plane, together forming the basis for two-dimensional planar motion. Similarly, the inner wall of the second support cylinder 1021 and the second slider 1023 also employ a non-circular cross-section fit to restrict the rotation of the second slider 1023.

[0024] As an alternative implementation, the second support cylinder 1021 can also be in the shape of a regular square prism, with its inner wall and the cross-section of the second slider 1023 along the axis of the second lead screw 1022 both being regular squares, to achieve a non-circular fit.

[0025] Further, see Figure 3The second translation mechanism 102 also includes an L-shaped second connecting frame 1025 and a support plate 1026. On the second support cylinder 1021, second limiting grooves 1021a are respectively formed along its axial direction on both sides corresponding to the first support cylinder 1011. The support plate 1026 is arranged between the first support cylinder 1011 and the second support cylinder 1021, and is connected to the bottom of the first support cylinder 1011 via a connecting column. The support plate 1026 is simultaneously fixed to one end of each of the two second connecting frames 1025, while the other ends of the two connecting frames pass through the corresponding second limiting grooves 1021a and connect to the second slider 1023 inside the cylinder. With this arrangement, the linear motion of the second slider 1023 can be transmitted via the connecting frame and the support plate 1026, driving the entire first translation mechanism 101 and the upper cleaning mechanism 200 to move along the axial direction of the second support cylinder 1021.

[0026] Further, see Figure 3 The anti-clogging device also includes a fixing base 300. The two ends of the second support cylinder 1021 along its axial direction are respectively fixed to the frame of the stem removal machine through the fixing base 300, thereby providing a stable support foundation for the entire two-dimensional moving platform 100 and the cleaning mechanism 200.

[0027] The working process of this embodiment is as follows: In this embodiment, during the actual production process, when the stem removal machine starts and enters normal working condition, the anti-blocking device is simultaneously put into operation. The entire device is securely installed in a suitable position on the frame of the removal machine via the fixing base 300, so that the distributor 201 of the cleaning mechanism 200 is precisely suspended directly below the primary screen and maintains an appropriate working distance.

[0028] The two-dimensional moving platform 100 receives commands from the control system. The first motor 1014 in its first translation mechanism 101 drives the first lead screw 1012 to rotate at a constant speed, causing the first slider 1013, constrained by a non-circular fit structure, to move axially along the first support cylinder 1011. Simultaneously, the second motor 1024 in the second translation mechanism 102 also starts synchronously, driving the second lead screw 1022 to rotate, causing the second slider 1023 to move smoothly in a direction perpendicular to the first moving direction. These two movements are transmitted through the connecting frame and the support plate 1026, jointly driving the upper cleaning mechanism 200 to form a complete planar coverage path below the screen.

[0029] During this movement, an external air source continuously supplies a stable pressure of airflow to the sealed cavity of the distributor 201 through the air supply pipe 202. The airflow is evenly distributed to each nozzle 203 through the cavity, forming multiple vertically upward concentrated airflow beams. These airflow beams continuously change their position of action as the mechanism moves. When a nozzle 203 passes through the screen blockage area, the strong airflow it ejects instantly acts on the blockage, effectively blowing the tobacco stems out of the mesh.

[0030] Meanwhile, driven by the servo motor 204, the distributor 201 oscillates periodically in both directions, causing the ejected airflow to spread in a fan shape, further expanding the effective range of a single purging. This combined motion ensures that every area of ​​the screen surface is thoroughly cleaned. The entire unblocking process is completed synchronously during normal production line operation, maintaining continuous screen unobstructed flow without interrupting production. This ensures that the blockage removal machine can stably perform its separation function, effectively improving production efficiency and product quality.

[0031] The core of this embodiment lies in explaining the control logic and cooperative working method between the servo motor 204, the first motor 1014, and the second motor 1024, rather than the specific mechanical structure of each motor itself. All motors involved are conventional components in the art, and their internal structures are existing technology, therefore they will not be described in detail.

[0032] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An anti-clogging device for a stem removal machine, wherein the stem removal machine is equipped with a primary screen, characterized in that, The anti-clogging device includes: A two-dimensional mobile platform is mounted on the stump removal machine; A cleaning mechanism, located on the two-dimensional moving platform, includes a distributor located below the primary screen and at least one nozzle located on top of the distributor. The distributor has an internal cavity that is connected to an external air source via an air supply pipe. Each nozzle is connected to the cavity and faces the primary screen. The mechanism is used to spray gas to remove blockages from the primary screen.

2. The anti-clogging device of the stalk removal machine according to claim 1, characterized in that, The distributor is a horizontally extending strip structure, and multiple nozzles are arranged along the extension direction of the distributor; the cleaning mechanism also includes a servo motor mounted on the two-dimensional moving platform, with the servo motor's shaft facing upward and connected to one end of the distributor's extension direction.

3. The anti-clogging device of the stalk removal machine according to claim 2, characterized in that, The two-dimensional mobile platform includes a first translation mechanism; the first translation mechanism has a first support cylinder horizontally disposed below the servo motor and sealed at both ends, a first lead screw coaxial with the first support cylinder and disposed therein, a first slider threaded onto the first lead screw, and a first motor whose working end is coaxially connected to one end of the first lead screw; the inner wall of the first support cylinder and the first slider have a non-circular cross-section along the axial direction of the first lead screw.

4. The anti-clogging device of the stalk removal machine according to claim 3, characterized in that, The first translation mechanism also has a first connecting frame with a U-shaped structure. The side wall of the first support cylinder is provided with a first limiting groove that communicates with its interior. The first limiting groove extends along the axial direction of the first support cylinder. One end of the first connecting frame is connected to the first slider through the first limiting groove, and the other end is located on the first support cylinder and connected to the servo motor.

5. The anti-clogging device of the stalk removal machine according to claim 4, characterized in that, The two-dimensional moving platform includes a second translation mechanism; the second translation mechanism has a second support cylinder horizontally disposed below the first support cylinder and sealed at both ends, a second lead screw coaxial with and disposed within the second support cylinder, a second slider threaded onto the second lead screw, and a second motor whose working end is coaxially connected to one end of the second lead screw; the axis of the second support cylinder and the axis of the first support cylinder are perpendicular to each other in the horizontal plane; the inner wall of the second support cylinder and the second slider have a non-circular cross-section along the axial direction of the second lead screw.

6. The anti-clogging device of the stalk removal machine according to claim 5, characterized in that, The second translation mechanism also has an L-shaped second connecting frame and a support plate; the second support cylinder is provided with second limiting grooves communicating with its interior on both sides of the first support cylinder along the axial direction, and the second limiting grooves extend along the axial direction of the second support cylinder; the support plate is located between the first support cylinder and the second support cylinder, and is connected to the bottom of the first support cylinder through a connecting column; the support plate is connected to one end of the two connecting frames respectively, and the other end of the two connecting frames is connected to the second slider through the two second limiting grooves respectively.

7. The anti-clogging device of the stalk removal machine according to claim 6, characterized in that, It also includes a fixing seat, and the two ends of the second support cylinder are respectively mounted on the stem removal machine via the fixing seat.

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