Vacuum support device capable of reliably filtering
The design of the fixing cap and the fixing ring solves the problem that the filter screen in the existing vacuum bracket cannot be reliably fixed and replaced, achieves the effect of seamless filtering and flexible replacement of the filter screen, and improves the filtering effect and usage flexibility of the vacuum bracket.
Patent Information
- Application Number
- CN202422559375.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The existing vacuum bracket with a filter cannot achieve reliable filtration, resulting in debris entering the pump unit through the gap between the filter and the vacuum bracket, and the filter cannot be replaced, resulting in poor versatility of the vacuum bracket.
The design of fixing cap, fixing ring and vacuum bracket is adopted. The filter screen is pressed against the exhaust boss through the fixing ring. The fixing cap is connected to the vacuum bracket to achieve reliable fixation of the filter screen, avoid welding gaps, and support the replacement of the filter screen.
It effectively prevents debris from entering the vacuum pump unit, ensures the filtering effect, supports the replacement of filters with different mesh sizes, and improves the reliability and versatility of the vacuum bracket.
Smart Images
Figure CN223331399U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vacuum pipeline connection, in particular to a vacuum support device with reliable filtering. Background Art
[0002] Vacuum brackets are usually combined with sealing rubber rings and used for pipe connections in the vacuum field. Their main function is to provide positioning and support for the sealing rubber rings, ensuring that the sealing rings do not move laterally when compacted during the vacuum process, thereby ensuring the sealing of the pipeline.
[0003] Existing vacuum supports with filters on the market are typically flat. The filter is placed inside the support and secured to the support using several symmetrical spot welds. However, due to welding deformation, the gap between the filter and the support cannot be completely welded, resulting in areas with no gaps. This connection allows debris to enter the pump unit through the gap between the filter and the support during vacuuming, resulting in suboptimal filtration.
[0004] The existing vacuum brackets with filters on the market are fixed. Once the filter of the vacuum bracket is fixed, it cannot be removed or replaced with a filter of other states. If the filter is damaged or the powder particles change, the vacuum bracket and the filter can only be replaced at the same time, resulting in poor versatility of the vacuum bracket.
[0005] The existing vacuum brackets with filter screens on the market have large apertures (20 mesh to 100 mesh) and are unable to filter small-sized powder particles. When vacuuming a chamber containing metal powder below 100 mesh or finer particles, the metal powder is easily sucked into the pump unit, causing the pump unit to be contaminated. If the amount is large, it will cause damage to the pump unit; when the pressure of the negative pressure container returns to atmospheric pressure, fine particles from the outside are easily sucked into the container, causing the container to be contaminated and unable to meet product requirements. Utility Model Content
[0006] The technical problem to be solved by the embodiments of the present utility model is that the existing vacuum bracket with a filter screen cannot achieve reliable filtration, resulting in the problem that debris enters the pump group through the gap between the filter screen and the vacuum bracket.
[0007] In order to solve the above problems, an embodiment of the present utility model proposes a vacuum support device with reliable filtration, including a fixing cap, a fixing ring, a filter screen and a vacuum support, wherein an exhaust boss is provided at one end of the vacuum support, and an exhaust port is provided on the exhaust boss that passes through the vacuum support; the filter screen covers the exhaust port, and the outer edge of the filter screen extends out of the outside of the exhaust boss; the fixing ring bends and squeezes the part of the filter screen extending out of the outside of the exhaust boss onto the outer surface of the exhaust boss to fix the filter screen on the exhaust boss; the fixing cap is sleeved on the outside of the fixing ring, and the fixing cap is connected to the vacuum support.
[0008] A further technical solution is that the fixing cap includes a through hole, and the upper end of the fixing cap is provided with an inner edge portion extending into the through hole, and the inner edge portion is pressed tightly against the filter screen.
[0009] A further technical solution is that the vacuum bracket includes a connecting portion, the connecting portion is arranged on the lower side of the vacuum boss, and the fixing cap is connected to the connecting portion.
[0010] A further technical solution is that the fixing cap is threadedly connected to the connecting portion.
[0011] A further technical solution is that the fixing cap is welded to the connecting portion.
[0012] A further technical solution is that the outer diameter of the connecting portion is larger than the outer diameter of the air pumping boss, and a step structure is formed between the connecting portion and the air pumping boss.
[0013] A further technical solution is that the vacuum bracket also includes a sealing ring fixing portion for fixing the sealing ring, the sealing ring fixing portion is arranged on the lower side of the connecting portion, and the outer diameter of the sealing ring fixing portion is larger than the outer diameter of the connecting portion.
[0014] A further technical solution is that a limiting groove for fixing the sealing ring is provided on the surface of the sealing ring fixing portion.
[0015] A further technical solution is that the mesh size of the filter is 20-2000.
[0016] A further technical solution is that the centers of the fixing cap, the fixing ring, the filter screen and the vacuum support are aligned.
[0017] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include:
[0018] The vacuum support device for reliable filtration proposed in the embodiment of the present utility model includes a fixing cap, a fixing ring, a filter screen, and a vacuum support, wherein one end of the vacuum support is provided with an exhaust boss, and the exhaust boss is provided with an exhaust port that passes through the vacuum support; the filter screen covers the exhaust port, and the outer edge of the filter screen extends outward from the exhaust boss; the fixing ring bends and squeezes the portion of the filter screen extending outward from the exhaust boss onto the outer surface of the exhaust boss to fix the filter screen on the exhaust boss; the fixing cap is sleeved on the outer side of the fixing ring, and the fixing cap is connected to the vacuum support. In the present utility model, the fixing ring fixes the filter screen by pressing the filter screen onto the outer surface of the exhaust boss. Compared with the welding method, the filter screen can completely cover the exhaust port without leaving any gaps, thereby effectively preventing debris from entering the vacuum pump group. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.
[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0021] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.
[0022] Figure 1 An exploded view of a vacuum support device for reliable filtration proposed in an embodiment of the present utility model;
[0023] Figure 2 This is a schematic structural diagram of a vacuum support device for reliable filtration proposed in an embodiment of the present utility model.
[0024] Reference numerals
[0025] Fixed cap 1, fixed ring 2, filter screen 3, vacuum bracket 4, air extraction boss 41, air extraction port 42, connecting portion 43, sealing ring fixing portion 44, limiting groove 441, through hole 11, inner edge portion 12. DETAILED DESCRIPTION
[0026] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Similar component numbers in the drawings represent similar components. Obviously, the embodiments described below 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 any creative efforts are within the scope of protection of the present invention.
[0027] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.
[0028] It should also be understood that the terms used in this specification of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the specification of the embodiments of the present invention and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.
[0029] See also Figure 1-Figure 2 The present invention provides a vacuum support device with reliable filtration. In this vacuum support device, the filter screen 3 and the vacuum support 4 are not fixed by welding. The filter screen 3 completely covers the vacuum support 4, and there is no gap between the two. This can effectively prevent debris from entering the vacuum pump unit and causing damage to the vacuum pump unit. In order to achieve the above technical problems, the vacuum support device with reliable filtration includes a fixing cap 1, a fixing ring 2, a filter screen 3 and a vacuum support 4. The specific structure is described as follows:
[0030] An exhaust boss 41 is provided at one end of the vacuum support 4 . An exhaust port 42 that passes through the vacuum support is provided on the exhaust boss 41 . The exhaust port 42 is used for air flow to pass through.
[0031] The filter screen 3 covers the air extraction port 42, and the outer edge of the filter screen 3 extends outside the air extraction boss 41. The diameter of the filter screen 3 is larger than the diameter of the air extraction boss 41. The filter screen 3 completely covers the end surface of the air extraction boss 41.
[0032] The fixing ring 2 is used to secure the filter screen 3 to the exhaust boss 41. Specifically, the fixing ring 2 bends and presses the portion of the filter screen 3 extending outside the exhaust boss 41 against the outer surface of the exhaust boss 41 to secure the filter screen 3 to the exhaust boss 41. The fixing ring 2 secures the filter screen 3 by pressing it tightly. Compared to welding, the filter screen 3 can completely cover the exhaust port 42 without leaving any gaps, thereby effectively preventing debris from entering the vacuum pump unit.
[0033] The fixing cap 1 is sleeved on the outside of the fixing ring 2 and is connected to the vacuum bracket 4. The fixing cap 1 is used to fix the fixing ring 2 and the filter 3.
[0034] The vacuum support device for reliable filtration proposed in the embodiment of the present invention includes a fixing cap 1, a fixing ring 2, a filter screen 3, and a vacuum support 4. One end of the vacuum support 4 is provided with an exhaust boss 41, and the exhaust boss 41 is provided with an exhaust port 42 that penetrates the vacuum support 4. The filter screen 3 covers the exhaust port 42, and the outer edge of the filter screen 3 extends outside the exhaust boss 41. The fixing ring 2 bends and presses the portion of the filter screen 3 extending outside the exhaust boss 41 onto the outer surface of the exhaust boss 41 to fix the filter screen 3 to the exhaust boss 41. The fixing cap 1 is sleeved on the outer side of the fixing ring 2 and connected to the vacuum support 4. In the present utility model, the fixing ring 2 fixes the filter screen 3 by pressing the filter screen 3 against the outer surface of the exhaust boss 41. Compared with welding, the filter screen 3 can completely cover the exhaust port 42 without leaving any gaps, thereby effectively preventing debris from entering the vacuum pump unit.
[0035] Furthermore, in some embodiments, the fixing cap 1 includes a through hole 11, and the upper end of the fixing cap 1 is provided with an inner edge 12 extending into the through hole 11. The inner edge 12 is pressed against the filter 3. By squeezing the filter 3 and the upper end surface of the fixing ring 2 by the inner edge 12, the filter 3 can be further secured, while also effectively preventing the fixing ring 2 from falling off. It is understood that the through hole 11 of the fixing cap 1 is connected to the exhaust port 42 of the vacuum bracket 4, thereby realizing the exhaust function.
[0036] In the embodiment of the present invention, the centers of the fixing cap 1 , the fixing ring 2 , the filter screen 3 and the vacuum bracket 4 are aligned, so that they can be assembled accurately and avoid displacement of the installation position.
[0037] Furthermore, in order to achieve a reliable connection between the fixing cap 1 and the vacuum support 4 , the vacuum support 4 includes a connecting portion 43 , which is provided on the lower side of the vacuum boss 41 , and the fixing cap 1 is connected to the connecting portion 43 .
[0038] The outer diameter of the connecting portion 43 is larger than that of the air extraction boss 41, forming a step structure between the connecting portion 43 and the air extraction boss 41. As a result, the retaining ring can be sleeved on the outside of the air extraction boss 41 without protruding from the connecting portion 43, allowing the fixing cap 1 to completely wrap around the retaining ring and then connect to the connecting portion 43.
[0039] Specifically, in one embodiment, the fixing cap 1 is threadedly connected to the connecting portion 43. The connecting portion 43 has external threads on its exterior, and the fixing cap 1 has internal threads on its interior, thereby threading the fixing cap 1 and the connecting portion 43 together. This threaded connection enables a detachable connection between the fixing cap 1 and the vacuum support 4, allowing the fixing cap 1 to be removed to replace the filter 3, for example, to change to a filter 3 of a different mesh size according to actual filtration needs.
[0040] In the embodiment of the present invention, the mesh number of the filter 3 is 20-2000. That is, the filter 3 can have multiple types, each type corresponding to a different mesh number, and the user can choose according to his own needs.
[0041] Alternatively, in some other embodiments, the fixing cap 1 is welded to the connecting portion 43. For example, the fixing cap 1 and the connecting portion 43 are welded and fixed as a whole by girth welding, ensuring that there is no gap between the fixing cap 1 and the connecting portion 43, achieving a good fixing effect, but the filter 3 cannot be replaced.
[0042] Furthermore, the vacuum support 4 also includes a sealing ring fixing portion 44 for fixing the sealing ring, the sealing ring fixing portion 44 is provided on the lower side of the connecting portion 43, and the outer diameter of the sealing ring fixing portion 44 is larger than the outer diameter of the connecting portion 43. The surface of the sealing ring fixing portion 44 is provided with a limiting groove 441 for fixing the sealing ring. The sealing ring is arranged in the limiting groove 441. In one embodiment, the vacuum support 4 is used to be connected to a bellows, the outer diameter of the sealing ring fixing portion 44 is larger than the outer diameter of the connecting portion 43, the size of the sealing ring fixing portion 44 is the largest, and the sealing ring is sleeved on the outside of the sealing ring fixing portion 44. When the vacuum support 4 is connected to the bellows, the sealing ring can be reliably squeezed, thereby achieving reliable sealing.
[0043] The technical effects of the utility model include:
[0044] 1. The structure of the filter 3 and the vacuum bracket 4 is changed to avoid welding deformation. At the same time, the gap between the filter 3 and the vacuum bracket 4 with the existing filter 3 on the market is eliminated, thus ensuring the filtering effect of the filter;
[0045] 2. The connection method between the filter 3 and the vacuum support 4 has been changed. If the filter 3 is damaged or the powder particles to be filtered change, the filter can be replaced with a different mesh size according to the use requirements, and the vacuum support 4 can continue to be used, ensuring the sustainability of the vacuum support 4.
[0046] 3. Prepare standard vacuum supports 4 with different nominal diameters. The stainless steel filter 3 with appropriate mesh size can be replaced according to the use requirements. The filtration limit can reach 2000 mesh, which has a good filtering effect on fine inclusion particles and ensures the reliability of the production environment.
[0047] The processing and assembly process of the vacuum support device for reliable filtration proposed by the utility model is as follows:
[0048] (1) The vacuum bracket is machined using a lathe. The sealing rubber ring installation part (sealing ring fixing part) of the vacuum bracket is consistent with the structure and size of the current general vacuum bracket. A standard vacuum bracket of appropriate specifications can be prepared according to the pipeline size, directly combined with the sealing rubber ring, and connected with a clamp. The structure and size of the step part need to be processed in conjunction with the fixing ring and the threaded fixing cap;
[0049] (2) Place the filter on the vacuum boss of the vacuum bracket. The mesh size of the filter can be selected according to the particle size to be filtered.
[0050] (3) Use a fixing ring to fix the filter;
[0051] (4) Tighten the thread of the fixing cap and the thread of the vacuum bracket so that the fixing ring is squeezed and fixed; wherein, there is a gap between the fixing cap and the fixing ring to ensure that the fixing cap does not rub against the side wall of the fixing ring during the locking process, and only exerts a compressive effect on the upper surface of the fixing ring and the filter screen; ensure that the filter screen does not slide and does not move during use.
[0052] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.
[0055] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0056] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0057] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.
[0058] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, as long as these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
[0059] The above description is a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.
Claims
1. A vacuum support device for reliable filtration, characterized in that: It includes a fixing cap, a fixing ring, a filter screen and a vacuum bracket, wherein an exhaust boss is provided at one end of the vacuum bracket, and an exhaust port is provided on the exhaust boss that passes through the vacuum bracket; the filter screen covers the exhaust port, and the outer edge of the filter screen extends out of the outside of the exhaust boss; the fixing ring bends and squeezes the part of the filter screen extending out of the outside of the exhaust boss onto the outer surface of the exhaust boss to fix the filter screen on the exhaust boss; the fixing cap is sleeved on the outside of the fixing ring, and the fixing cap is connected to the vacuum bracket.
2. The vacuum support device for reliable filtration according to claim 1, characterized in that The fixing cap includes a through hole, and an inner edge portion is provided at the upper end of the fixing cap and extends into the through hole, and the inner edge portion is pressed tightly against the filter screen.
3. The vacuum support device for reliable filtration according to claim 1, characterized in that The vacuum support includes a connecting portion, which is arranged on the lower side of the air extraction boss, and the fixing cap is connected to the connecting portion.
4. The vacuum support device for reliable filtration according to claim 3, characterized in that: The fixing cap is threadedly connected to the connecting portion.
5. The vacuum support device for reliable filtration according to claim 3, characterized in that: The fixing cap is welded to the connecting portion.
6. The vacuum support device for reliable filtration according to claim 3, characterized in that The outer diameter of the connecting portion is greater than the outer diameter of the air pumping boss, and a step structure is formed between the connecting portion and the air pumping boss.
7. The vacuum support device for reliable filtration according to claim 3, characterized in that The vacuum bracket further includes a sealing ring fixing portion for fixing the sealing ring. The sealing ring fixing portion is arranged at the lower side of the connecting portion, and the outer diameter of the sealing ring fixing portion is greater than the outer diameter of the connecting portion.
8. The vacuum support device for reliable filtration according to claim 7, characterized in that The surface of the sealing ring fixing portion is provided with a limiting groove for fixing the sealing ring.
9. The vacuum support device for reliable filtration according to claim 1, characterized in that The mesh number of the filter is 20-2000.
10. The vacuum support device for reliable filtration according to claim 1, characterized in that The centers of the fixing cap, the fixing ring, the filter screen, and the vacuum support are aligned.