Catalyst diversion structure
By designing the catalyst flow diversion structure, using the flow diversion block, drip hole and flow diversion surface, the problem of low catalyst feeding accuracy is solved, the precise input of the catalyst is achieved, and the feeding efficiency is improved.
Patent Information
- Application Number
- CN202420642691.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-03-29
AI Technical Summary
In the existing sand-type 3D printing equipment, the catalyst feeding accuracy is not high, which causes the catalyst to form a hanging wall in the pipeline, loses kinetic energy, and cannot be accurately put into the mixing bucket.
A catalyst flow guide structure is designed, including a flow guide block, a drip hole and a flow guide surface. The catalyst is tilted and sliding on the flow guide surface through the design of the drip hole, and gravity is concentrated to ensure that the catalyst can still drip into the stirring bucket after the feeding device stops working.
Accurate feeding of the catalyst is achieved, preventing the catalyst from staying in the pipeline, and improving the feeding accuracy and efficiency.
Smart Images
Figure CN222856651U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sand mold 3D printing equipment, in particular to a catalyst guide structure. Background Art
[0002] With the popularization of sand 3D printer technology, more and more industries have begun to use sand 3D printers. Sand 3D printing (3DP) is a type of rapid prototyping technology. It is a technology that uses digital model files as the basis and uses bondable materials such as silica sand, artificial sand, ceramic powder, etc. to construct objects by printing layer by layer.
[0003] At present, the application field of sand mold 3D printing industry has expanded, and the types of catalysts used have also been diversified. The addition of catalysts is usually done by feeding the catalyst into the mixing bucket through a feeding pipe through a feeding device. However, when the catalyst feeding work is nearing the end, the feeding device will stop working, allowing the catalyst in the pipeline to automatically drip into the mixing bucket by its own gravity. As the amount of catalyst in the pipeline decreases, the catalyst can easily form a wall hanging site in the pipeline. At the same time, under the action of the liquid surface tension of the catalyst in the pipeline, the catalyst in the pipeline will lose kinetic energy and stay in the pipeline, resulting in the problem of low catalyst accuracy. Utility Model Content
[0004] Based on this, it is necessary to provide a catalyst guide structure that can improve the accuracy of catalyst feeding.
[0005] A catalyst guide structure comprises a guide block; the guide block has a top end and a bottom end relative to each other; a drip hole penetrating the top end and the bottom end is formed on the guide block; a guide surface is formed on the end surface of the bottom end along the circumference of the drip hole; the guide surface is a conical surface protruding outward in the direction from the top end to the bottom end; the opening of the drip hole at the bottom end is located at the lowest point of the guide surface.
[0006] In one of the embodiments, the angle between the guide surface and a reference plane perpendicular to the central axis of the drip hole is 28° to 29°.
[0007] In one of the embodiments, a process groove connected to the drip hole is opened on the end surface of the bottom; and the guide surface is formed in the process groove.
[0008] In one of the embodiments, a connecting piece is further included; a mounting hole is formed on the bottom wall of the process tank, and the mounting hole is located at the edge of the guide surface away from the drip hole; one end of the connecting piece is inserted into the mounting hole.
[0009] In one embodiment, the mounting hole is a countersunk hole formed on the guide surface.
[0010] In one of the embodiments, it also includes a transparent pipeline, a detection component and a controller; the top end is connected to a transparent pipeline connected to the drip hole; the detection component is installed at the top end close to the transparent pipeline, and is used to detect whether there are bubbles, air, or insufficient liquid in the transparent pipeline; the controller is electrically connected to the detection component, and is used to report an error when the detection component detects that there are bubbles, air, or insufficient liquid in the transparent pipeline.
[0011] In one of the embodiments, the guide block is a fluororubber structure.
[0012] In the actual application of the above-mentioned catalyst guide structure, the top and bottom are respectively the upper end and the lower end of the guide structure, and at this time the direction from the top to the bottom is the vertical downward direction. The catalyst guide structure is installed just above the stirring bucket, and is used to introduce the catalyst in the feeding pipeline into the stirring bucket through the dripping port when the catalyst is fed into the stirring bucket. During the catalyst feeding process, part of the catalyst in the dripping hole will flow out from the bottom opening of the dripping hole and stay on the guide surface, and the catalyst located on the guide surface has a tendency to tilt and slide in the direction of the central axis of the dripping hole, so that the gravity of the catalyst at the bottom opening of the dripping hole will be concentrated toward the central axis of the dripping hole. Even if the feeding device has stopped working, the catalyst in the dripping hole is easy to drip into the stirring bucket under the action of its own gravity, so as to achieve accurate feeding of the catalyst. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the catalyst guide structure in a preferred embodiment of the utility model.
[0014] Description of the reference numerals in the specific implementation manner: 100, catalyst guide structure; 110, guide block; 111, top end; 112, bottom end; 113, drip hole; 114, guide surface; 115, process groove; 116, mounting hole; 120, detection component. DETAILED DESCRIPTION
[0015] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0017] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it can be directly on the other element or there can be an intermediate element. It is also understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or there can be one or more intermediate elements.
[0018] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.
[0019] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.
[0020] Figure 1 The structure of the catalyst guide structure in one embodiment of the utility model is shown. For the convenience of description, the accompanying drawings only show the structure related to the embodiment of the utility model.
[0021] See also Figure 1 The catalyst guide structure 100 in the preferred embodiment of the utility model includes a guide block 110. The guide block 110 has a top end 111 and a bottom end 112 opposite to each other. A drip hole 113 is provided on the guide block 110, which passes through the top end 111 and the bottom end 112. A guide surface 114 is formed on the end surface of the bottom end 112 along the circumference of the drip hole 113. The guide surface 114 is a conical surface protruding outward in the direction from the top end 111 to the bottom end 112. The opening of the drip hole 113 at the bottom end 112 is located at the lowest point of the guide surface 114.
[0022] In actual applications, the guide block 110 is installed directly above the mixing bucket. At this time, the top end 111 and the bottom end 112 are the upper end and the lower end of the guide block 110 respectively. The direction from the top end 111 to the bottom end 112 is also the vertically downward direction. The inclination direction of the guide surface 114 is consistent with the vertically downward direction and the direction toward the central axis of the drip hole 113.
[0023] During the catalyst feeding process, part of the catalyst in the drip hole 113 will flow out from the opening at the bottom end 112 of the drip hole 113 and stay on the guide surface 114. Since the guide surface 114 is inclined in the vertical downward direction along the direction toward the central axis of the drip hole 113, the catalyst located on the guide surface 114 has a tendency to tilt and slide in the direction toward the central axis of the drip hole 113, so that the gravity of the catalyst at the opening at the bottom end 112 of the drip hole 113 will be concentrated on the central axis of the drip hole 113. Even if the feeding device has stopped working, the gravity of the catalyst in the drip hole 113 at the opening at the bottom end 112 of the drip hole 113 is concentrated at the center position, and it is easy to drip into the stirring bucket under the action of its own gravity, thereby realizing accurate feeding of the catalyst.
[0024] In some embodiments, the angle between the guide surface 114 and the reference plane perpendicular to the central axis of the drip hole 113 is 28° to 29°. That is, when the catalyst guide structure 100 is horizontal, the reference plane perpendicular to the central axis of the drip hole 113 is a horizontal plane, and the angle between the guide surface 114 and the horizontal plane is 28° to 29°, which can ensure that the gravity concentration of the catalyst in the drip hole 113 at the opening of the bottom end 112 of the drip hole 113 is higher, so that the catalyst tail in the drip hole 113 is easier to fall into the stirring bucket, so that the catalyst feeding accuracy is higher.
[0025] Of course, in other embodiments, the angle between the guide surface 114 and the reference plane perpendicular to the central axis of the drip hole 113 may also be other angles other than 28° to 29°, for example, slightly less than 28° or slightly greater than 29°.
[0026] In some embodiments, a process groove 115 connected to the drip hole 113 is provided on the end surface of the bottom end 112. A guide surface 114 is formed in the process groove 115. That is, the guide surface 114 is located on the bottom wall in the process groove 115. When processing parts, it is only necessary to process the bottom wall of the process groove 115 into the guide surface 114 when processing the process groove 115. At this time, the guide surface 114 is located in the process groove 115, which can reduce the situation where the guide surface 114 causes interference with other parts during the installation process. Therefore, the setting of the process groove 115 greatly reduces the processing difficulty and assembly difficulty of the guide block 110.
[0027] It should be noted that the bottom wall of the process tank 115 refers to the inner wall of the process tank 115 directly facing the opening of the process tank 115 .
[0028] Furthermore, in some embodiments, the catalyst guide structure 100 also includes a connector (not shown). A mounting hole 116 is provided on the bottom wall of the process tank 115, and the mounting hole 116 is located at the edge of the guide surface 114 away from the drip hole 113. One end of the connector is inserted into the mounting hole 116. When it is necessary to install the guide block 110 directly above the mixing bucket, the connection between the guide block 110 and other components can be achieved by using the connector inserted into the mounting hole 116. The mounting hole 116 is formed in the process tank 115, which can reduce the situation where the connector protrudes from the end face of the bottom end 112, and avoids the situation where the connector interferes with other surrounding components or the working process of the 3D printing equipment, so that the structure of the catalyst guide structure 100 is more compact.
[0029] Furthermore, the mounting hole 116 is a countersunk hole formed on the guide surface 114. Thus, when the guide block 110 is installed, the end of the connector can be sunk into the countersunk hole, leaving a larger installation space for the guide block 110 and surrounding components.
[0030] In some embodiments, the catalyst flow guide structure 100 also includes a transparent pipeline (not shown), a detection member 120 and a controller (not shown). The top 111 is connected to a transparent pipeline connected to the drip hole 113. The detection member 120 is installed at a position close to the transparent pipeline at the top 111, and is used to detect whether there are bubbles, air, or insufficient liquid in the transparent pipeline. The controller is electrically connected to the detection member 120, and is used to report an error when the detection member 120 detects bubbles, air, or insufficient liquid in the transparent pipeline. Among them, the detection member 120 can be a directed liquid level sensor, a capacitive sensor, etc.
[0031] During the feeding process, the detection component 120 is used to detect in real time whether there are bubbles, air or insufficient liquid in the transparent pipe. If any of the above conditions exists, the controller will report an error to facilitate the staff to intervene manually and improve the reliability of catalyst feeding.
[0032] In some embodiments, the guide block 110 is a fluororubber structure. At present, the application field of the sand mold 3D printing industry has expanded, and the types of catalysts used have also been diversified. The new catalyst is highly corrosive and seriously corrodes metal parts such as SUS304. Fluororubber has excellent corrosion resistance, aging resistance and vacuum performance. Therefore, setting the guide block 110 as a fluororubber structure can reduce the probability of the guide block 110 being corroded by the catalyst during the catalyst delivery process, extend the service life of the guide block 110, and thus make the catalyst guide structure 100 have a longer service life.
[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A catalyst guide structure, characterized in that: It includes a guide block; the guide block has a relative top and bottom; the guide block is provided with a drip hole penetrating the top and the bottom; the end surface of the bottom is formed with a guide surface along the circumference of the drip hole; the guide surface is a conical surface protruding outward from the top to the bottom; the opening of the drip hole at the bottom is located at the lowest point of the guide surface.
2. The catalyst guide structure according to claim 1, characterized in that: The angle between the guide surface and a reference plane perpendicular to the central axis of the drip hole is 28° to 29°.
3. The catalyst guide structure according to claim 1, characterized in that: The end surface of the bottom end is provided with a process groove connected with the drip hole; the guide surface is formed in the process groove.
4. The catalyst guide structure according to claim 3, characterized in that: It also includes a connecting piece; a mounting hole is opened on the bottom wall of the process tank, and the mounting hole is located at the edge of the guide surface away from the drip hole; one end of the connecting piece is inserted into the mounting hole.
5. The catalyst guide structure according to claim 4, characterized in that: The mounting hole is a countersunk hole formed on the guide surface.
6. The catalyst guide structure according to claim 1, characterized in that: It also includes a transparent pipeline, a detection component and a controller; the top end is connected to a transparent pipeline connected to the drip hole; the detection component is installed at the top end close to the transparent pipeline, and is used to detect whether there are bubbles, air, or insufficient liquid in the transparent pipeline; the controller is electrically connected to the detection component, and is used to report an error when the detection component detects that there are bubbles, air, or insufficient liquid in the transparent pipeline.
7. The catalyst guide structure according to claim 1, characterized in that: The guide block is a fluororubber structure.