Self-stopping filling mechanism for hazardous chemicals

Abstract

This utility model discloses a self-stopping filling mechanism for hazardous chemicals, including a filling nozzle; a robotic arm that drives and changes the spatial position and orientation of the filling nozzle; a housing through which the filling nozzle passes, with the opening direction of the housing being the same as the opening direction of the filling nozzle; elastic columns arranged around the housing, wherein when the elastic columns are not subjected to external force, the axial distance from the end of the elastic column to the opening of the filling nozzle is less than the axial distance from the opening of the housing to the opening of the filling nozzle; and sensors, each elastic column being equipped with a sensor for sensing the spatial position of the elastic column, the sensors being electrically connected to the filling nozzle; the sensors trigger the filling nozzle to perform the filling operation only when all elastic columns are compressed and all sensors are triggered. This utility model uses the housing to block potentially splashing hazardous chemicals, and the sensors arranged around the housing also facilitate ensuring that the filling operation is only permitted when the housing is closed and sealed, further ensuring the safety of the filling process.

Description

Technical Field

[0001] This utility model relates to the field of filling and dispensing mechanisms, specifically to a self-stopping filling mechanism for hazardous chemicals. Background Technology

[0002] The filling of hazardous chemicals is always an operation that requires utmost caution in industry. For example, the filling of yellow phosphorus, a hazardous chemical, is a serious matter. Yellow phosphorus has a low melting point of approximately 44°C. When the ambient temperature exceeds this value, solid yellow phosphorus will melt into a liquid. It appears as a pale yellow, transparent liquid with good fluidity. Its density is slightly less than that of solid yellow phosphorus, approximately 1.78 g / cm³, and its viscosity is low, allowing it to easily diffuse along surfaces.

[0003] One step in transporting yellow phosphorus is transferring liquid yellow phosphorus through pipelines to tank trucks. This stage is often still done manually, which is very risky; even a slight mistake can cause a fire and casualties. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a self-stopping filling mechanism for hazardous chemicals.

[0005] To solve the above problems, this utility model provides a self-stopping filling mechanism for hazardous chemicals. To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problems is as follows:

[0006] A self-stopping filling mechanism for hazardous chemicals includes: a filling nozzle; a robotic arm that drives and changes the spatial position and orientation of the filling nozzle; a housing through which the filling nozzle passes, the opening direction of the housing being the same as the opening direction of the filling nozzle; several elastic columns arranged around the housing, wherein when the elastic columns are not subjected to external force, the axial distance from the end of the elastic column to the opening of the filling nozzle is less than the axial distance from the opening of the housing to the opening of the filling nozzle; and sensors, each elastic column being equipped with a sensor for sensing the spatial position of the elastic column, the sensors being electrically connected to the filling nozzle; wherein, when all elastic columns are compressed and all sensors are triggered, the sensors trigger the filling nozzle to perform a filling operation.

[0007] As a further improvement of this utility model, the cover includes a top plate, four side plates are fixed around the top plate, the space enclosed by the cover is a truncated quadrangular shape, the filling nozzle passes through the top plate, and the area of ​​the opening of the cover is larger than the area of ​​the top plate.

[0008] As a further improvement of this utility model, the number of elastic columns is four, and the four elastic columns are arranged outside the apex corner of the opening of the cover, and the axis of the elastic columns is parallel to the height direction of the truncated pyramid.

[0009] As a further improvement of this utility model, the end of the robotic arm is fixed with an upper frame, the sensor and the elastic column are assembled on the upper frame, and the cover is located between the upper frame and the opening of the filling nozzle.

[0010] As a further improvement of this utility model, the upper frame includes mutually perpendicular horizontal profiles and vertical profiles. Both the horizontal and vertical profiles are perpendicular to the length direction of the filling nozzle. The two parallel horizontal profiles are fixed to each other by two vertical profiles. The filling nozzle passes through the two vertical profiles, and the sensor is fixed to the end of the horizontal profile.

[0011] As a further improvement of this utility model, the elastic column is an elastic reset rod, which has unidirectional elastic potential energy along its own axis.

[0012] As a further improvement of this utility model, the elastic column includes a straight rod, one end of which is fixed with a circular plate, and a compression spring is sleeved on the straight rod; a positioning plate is fixed on the upper frame, the positioning plate has a through hole for the straight rod to move through, the elastic column has a linear reciprocating degree of freedom along its own axis, one end of the compression spring abuts against the circular plate, and the other end of the compression spring abuts against the positioning plate.

[0013] As a further improvement of this utility model, the sensor is a shielded proximity switch, which does not contact the elastic column, and the orientation of the shielded proximity switch is perpendicular to the axial direction of the elastic column.

[0014] As a further improvement of this utility model, the filling nozzle and the robotic arm are assembled through a linear module, and the movement direction of the linear module is parallel to the length direction of the filling nozzle.

[0015] As a further improvement of this utility model, the linear module is fixed with a fixing box, and the outer wall of the fixing box is fixed to the upper frame.

[0016] The beneficial technical effects of using the self-stopping filling mechanism for hazardous chemicals of this application are:

[0017] This mechanism employs a control logic that ensures the nozzle operates only when all elastic columns are compressed and all sensors are triggered. This logic guarantees a correct and precise fit between the nozzle and the filling container interface before allowing filling. Because the axial distance from the end of the elastic column to the nozzle opening is shorter when no external force is applied, the filling start condition is met only when the container interface fully contacts and compresses all elastic columns. This avoids situations where filling starts even when the nozzle is misaligned, not properly fitted, or there are gaps at the cover opening, effectively reducing the risk of hazardous chemical leaks and splashes.

[0018] The system uses a robotic arm to drive the nozzle to adjust its spatial position and orientation, replacing the high-risk manual operation in the background technology and avoiding personnel exposure to dangerous environments.

[0019] The filling nozzle passes through the casing, and both openings face the same direction. The casing provides basic physical protection for the filling area, preventing splashing of hazardous chemical droplets during filling. Combined with a dedicated position sensor for each elastic column, the structural design helps prevent the spread of potential leaks, while the electronic control logic avoids improper filling caused by a single sensor mis-triggered. This dual protection reduces invalid or dangerous filling operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of one embodiment of the present utility model;

[0022] Figure 2 This is a perspective view of one embodiment of the present utility model;

[0023] Figure 3 This is a partial enlarged view of point A in one embodiment of this utility model;

[0024] Figure 4 This is an assembly drawing of the cover and upper frame according to one embodiment of the present invention.

[0025] 1-Robotic arm; 2-Linear module; 3-Injection nozzle; 4-Cover; 401-Side plate; 402-Top plate; 403-Top hole; 5-Upper frame; 501-Horizontal profile; 502-Vertical profile; 6-L-shaped corner bracket; 7-Sensor; 8-Straight rod; 9-Circular piece; 10-Compression spring; 11-Positioning plate; 12-Fixing plate; 13-Fixing box. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to specific embodiments:

[0027] In order to achieve the purpose of this utility model, such as Figures 1 to 4As shown, a self-stopping filling mechanism for hazardous chemicals includes: a filling nozzle 3; a robotic arm 1 that drives the filling nozzle 3 and changes its spatial position and orientation; a casing 4 through which the filling nozzle 3 passes, and the junction between the filling nozzle 3 and the casing 4 is sealed; the opening direction of the casing 4 is the same as the opening direction of the filling nozzle 3; and several elastic columns arranged around the casing 4, such as... Figure 2 and Figure 3 As shown, when the elastic column is not subjected to external force, the axial distance from the end of the elastic column to the opening of the filling nozzle 3 is less than the axial distance from the opening of the cover 4 to the opening of the filling nozzle 3. Each elastic column is equipped with a sensor 7 to sense its spatial position. The sensor 7 is electrically connected to the filling nozzle 3 and controls the opening and closing of the filling nozzle 3. Specifically, the sensor 7 will only trigger the filling nozzle 3 to perform the filling operation when all elastic columns are compressed and all sensors 7 are activated.

[0028] To facilitate the presentation of technical details, Figure 2 compared to Figure 1 , Figure 2 The robotic arm 1 was hidden.

[0029] In the uncompressed state, one end of the elastic column coincides with the same spatial plane, which is perpendicular to the axis of the filling nozzle 3.

[0030] The beneficial effects of adopting the above technical solution are: by setting multiple elastic columns and corresponding sensors 7, it is ensured that the filling nozzle 3 can start the filling operation only when all elastic columns are compressed and all sensors 7 are triggered, thereby strictly ensuring that the filling nozzle 3 is completely aligned and tightly fitted with the container interface, which greatly reduces the risk of hazardous chemical leakage.

[0031] In some other embodiments of this utility model, the cover 4 includes a top plate 402, and four side plates 401 are fixed around the top plate 402. The space enclosed by the cover 4 is a truncated quadrangular shape. The filling nozzle 3 passes through the top plate 402, and the area of ​​the opening of the cover 4 is larger than the area of ​​the top plate 402.

[0032] The top plate 402 has a rectangular outline, and the side plate 401 has an isosceles trapezoidal outline. The top plate 402 has a top hole 403 in the middle for the filling nozzle 3 to pass through, and the outer wall of the filling nozzle 3 is sealed and fixed to the edge of the top hole 403.

[0033] The beneficial effects of adopting the above technical solution are: the cover 4 adopts a quadrangular frustum structure composed of a top plate 402 and four side plates 401, and its opening area is larger than the area of ​​the top plate 402, which helps to expand the protection range.

[0034] like Figure 4As shown, in some other embodiments of this utility model, the number of elastic pillars is four, and the four elastic pillars are arranged outside the top corner of the opening of the cover 4, with the axis of the elastic pillars parallel to the height direction of the truncated pyramid.

[0035] The beneficial effects of adopting the above technical solution are: the four elastic columns are respectively arranged on the outside of the four apex corners of the opening of the cover 4, and their axes are parallel to the height direction of the quadrangular frustum, so that the force is uniform and the detection is comprehensive.

[0036] In some other embodiments of this utility model, the end of the robotic arm 1 is fixed with an upper frame 5, the sensor 7 and the elastic column are assembled on the upper frame 5, and the cover 4 is located between the upper frame 5 and the opening of the filling nozzle 3.

[0037] The beneficial effects of adopting the above technical solution are: the upper frame 5 can provide stronger structural strength and more assembly positions.

[0038] In one embodiment, if the structural strength of the housing 4 is sufficient, the upper frame 5 is omitted, and other components that need to be fixed to the upper frame 5 are directly fixed to the housing 4.

[0039] like Figure 4 As shown, in some other embodiments of this utility model, the upper frame 5 includes mutually perpendicular horizontal profiles 501 and vertical profiles 502. Both the horizontal profiles 501 and the vertical profiles 502 are perpendicular to the length direction of the filling nozzle 3. The two parallel horizontal profiles 501 are fixed to each other by the two vertical profiles 502. The filling nozzle 3 passes through the two vertical profiles 502. The sensor 7 is fixed to the end of the horizontal profile 501.

[0040] The beneficial effects of adopting the above technical solution are: the upper frame 5 is composed of horizontal profile 501 and vertical profile 502 perpendicularly intersecting, which makes the structure stable and facilitates the arrangement and fixing of the sensor 7. At the same time, it leaves space for the filling nozzle 3 to pass through, which is conducive to the overall coordinated movement.

[0041] In some other embodiments of this utility model, the elastic column is an elastic reset rod, which has unidirectional elastic potential energy along its own axis.

[0042] The beneficial effects of adopting the above technical solution are: the elastic column adopts an elastic reset rod with unidirectional elastic potential energy, which enables it to automatically reset after being compressed, and the structure is simple and the response is sensitive.

[0043] like Figure 3As shown, in some other embodiments of this utility model, the elastic column includes a straight rod 8, which is a cylindrical rod. A circular piece 9 is fixed to one end of the straight rod 8, and a compression spring 10 is sleeved on the straight rod 8. A positioning plate 11 is fixed to the upper frame 5. The positioning plate 11 has a through hole through which the straight rod 8 can move. The elastic column has a linear reciprocating degree of freedom along its own axis. One end of the compression spring 10 abuts against the circular piece 9, and the other end of the compression spring 10 abuts against the positioning plate 11. The diameter of the compression spring 10 is larger than the diameter of the through hole in the positioning plate 11.

[0044] The beneficial effects of adopting the above technical solution are: the elastic column is composed of a straight rod 8, a circular plate 9 and a compression spring 10, and is guided by a positioning plate 11. It has linear reciprocating freedom, reliable structure, smooth operation, and effectively transmits pressure and triggers the sensor 7.

[0045] In some other embodiments of this utility model, the sensor 7 is a shielded proximity switch, which does not contact the elastic post, and the orientation of the shielded proximity switch is perpendicular to the axial direction of the elastic post.

[0046] In addition, the straight rod 8 is made of metal, and when the compression spring 10 is compressed, the straight rod 8 can intersect with the path of the shielded proximity switch.

[0047] The beneficial effects of adopting the above technical solution are: the sensor 7 is a shielded proximity switch, which does not contact the elastic column and its detection direction is perpendicular to the axis of the elastic column, thus avoiding mechanical wear. At the same time, the detection is stable, the life is long, and it is suitable for high-frequency use in industrial environments.

[0048] In one embodiment, the sensor 7 is fixed to one end of the transverse profile 501 via an L-shaped corner bracket 6.

[0049] In some other embodiments of this utility model, the filling nozzle 3 and the robotic arm 1 are assembled through a linear module 2, and the movement direction of the linear module 2 is parallel to the length direction of the filling nozzle 3.

[0050] The beneficial effects of adopting the above technical solution are: the filling nozzle 3 is assembled with the robotic arm 1 through the linear module 2, and the direction of movement is consistent with the length direction of the filling nozzle 3, which realizes the precise linear advance and retreat of the filling nozzle 3, and enhances the alignment accuracy and operational controllability.

[0051] In some other embodiments of this utility model, the linear module 2 is fixed with a fixing plate 12, and the fixing plate is also fixed with a fixing box 13. The outer wall of the fixing box 13 is fixed to the upper frame 5. Specifically, the outer wall of the fixing box 13 is fixed to both the transverse profile 501 and the longitudinal profile 502.

[0052] The beneficial effects of adopting the above technical solution are: the fixing box 13 further ensures the overall rigidity and stability, making it less likely to loosen when the filling nozzle 3, the cover 4 and the detection component move together.

[0053] The shielded proximity switch 7 utilizes the principle of electromagnetic induction. When its internal coil is energized, it generates an alternating magnetic field. When a metal object approaches this magnetic field, such as a straight metal rod 8, eddy currents are generated inside the object, absorbing magnetic field energy. This causes a change in the electrical parameters inside the switch, thereby identifying the object and outputting a signal.

[0054] The self-stopping filling mechanism for hazardous chemicals in this application adopts a robotic work platform. Further optimization will involve integrating advanced pipeline diversion and visual positioning systems to effectively control filling accuracy.

[0055] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A self-stopping filling mechanism for hazardous chemicals, characterized in that, include: Filler nozzle; A robotic arm drives and changes the spatial position and orientation of the filling nozzle; A cover, wherein the filling nozzle passes through the cover, and the opening direction of the cover is the same as the opening direction of the filling nozzle; Elastic columns, a number of elastic columns are arranged around the cover, and when the elastic columns are not subjected to external force contact and compression, the axial distance from the end of the elastic column to the opening of the filling nozzle is less than the axial distance from the opening of the cover to the opening of the filling nozzle. Each elastic column is equipped with a sensor that senses the spatial position of the elastic column, and the sensor is electrically connected to the filling nozzle; Specifically, the sensor triggers the filling nozzle to perform the filling operation only when all elastic columns are compressed and all sensors are activated.

2. The self-stopping filling mechanism for hazardous chemicals according to claim 1, characterized in that: The cover includes a top plate, and four side plates are fixed around the top plate. The space enclosed by the cover is a truncated pyramid. The filling nozzle passes through the top plate, and the area of ​​the opening of the cover is larger than the area of ​​the top plate.

3. The self-stopping filling mechanism for hazardous chemicals according to claim 2, characterized in that: The number of elastic pillars is four, and the four elastic pillars are arranged outside the apex corner of the opening of the cover. The axis of the elastic pillars is parallel to the height direction of the truncated pyramid.

4. The self-stopping filling mechanism for hazardous chemicals according to claim 1, characterized in that: The end of the robotic arm is fixed with an upper frame, the sensor and the elastic column are assembled on the upper frame, and the cover is located between the upper frame and the opening of the filling nozzle.

5. The self-stopping filling mechanism for hazardous chemicals according to claim 4, characterized in that: The upper frame includes mutually perpendicular horizontal profiles and vertical profiles. Both horizontal and vertical profiles are perpendicular to the length direction of the filling nozzle. Two parallel horizontal profiles are fixed to each other by two vertical profiles. The filling nozzle passes through the two vertical profiles, and the sensor is fixed to the end of the horizontal profile.

6. The self-stopping filling mechanism for hazardous chemicals according to claim 1, characterized in that: The elastic column is an elastic reset rod, which possesses unidirectional elastic potential energy along its own axis.

7. The self-stopping filling mechanism for hazardous chemicals according to claim 4, characterized in that: The elastic column includes a straight rod, one end of which is fixed with a circular plate, and a compression spring is sleeved on the straight rod; The upper frame is fixed with a positioning plate, which has a through hole for the straight rod to move through. The elastic column has a linear reciprocating degree of freedom along its own axis. One end of the compression spring abuts against the circular plate, and the other end of the compression spring abuts against the positioning plate.

8. The self-stopping filling mechanism for hazardous chemicals according to claim 1, characterized in that: The sensor is a shielded proximity switch, which does not contact the elastic post, and the orientation of the shielded proximity switch is perpendicular to the axis of the elastic post.

9. The self-stopping filling mechanism for hazardous chemicals according to claim 4, characterized in that: The filling nozzle is assembled with the robotic arm via a linear module, and the movement direction of the linear module is parallel to the length direction of the filling nozzle.

10. The self-stopping filling mechanism for hazardous chemicals according to claim 9, characterized in that: The linear module is fixed with a fixing box, and the outer wall of the fixing box is fixed to the upper frame.

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