Microfilter

Abstract

The utility model discloses a micro filter, which ensures that torsion is effectively transmitted to a mounting joint, and is not easy to damage even if a structure made of a thin-wall or low-strength material is applied. The micro filter comprises a columnar structure body, a shell and a filter element, the structure body comprises a connector end, a mounting end and a middle structure, an air inlet channel is formed in the connector end, filter channels are formed in the mounting end and the middle structure, and an air inlet communicated with the filter channels is formed in the outer side wall of the middle structure; the side wall of the middle structure is further provided with an air outlet communicated with the air inlet channel, the air inlet and the air outlet are arranged at different positions of the middle structure in the axial direction of the middle structure, the shell is sleeved with the middle structure, the filter element is arranged between the structure body and the shell, and the filter element wraps the middle structure and shields the air inlet. One of the middle structure and the shell is provided with a clamping protrusion, the other one of the middle structure and the shell is provided with a clamping hole, and the clamping protrusion is clamped into the clamping hole.

Description

Technical Field

[0001] The utility model relates to the field of air filtration, in particular to a micro filter. Background Art

[0002] In the field of industrial production, micro filters are needed in many occasions to filter gases, such as in vacuum grippers. However, current filters are large in size and cannot meet the filtering needs of small spaces. The filter element is easily torn or broken by the impact of high-frequency pulse airflow. In addition, when applying torque to install the filter, the loose shell cannot effectively transmit the torque to the installation connection, which makes it impossible to install the filter firmly.

[0003] Therefore, there is an urgent need for a micro filter that ensures that the torque is effectively transmitted to the installation connection to overcome the above-mentioned defects. Utility Model Content

[0004] The utility model aims to provide a micro filter which can ensure that the torque is effectively transmitted to the installation connection.

[0005] To achieve the above-mentioned purpose, the utility model provides a micro filter, including a columnar structural body, a shell and a filter element, the structural body includes a joint end and a mounting end respectively arranged at two ends and an intermediate structure arranged between the joint end and the mounting end, an air inlet channel is arranged in the joint end, and a filter channel is arranged in the mounting end and the intermediate structure, an outer wall of the intermediate structure is provided with an air inlet connected to the filter channel, and a side wall of the intermediate structure is also provided with an air outlet connected to the air inlet channel, the air inlet and the air outlet are respectively arranged at different parts of the intermediate structure along the axial direction of the intermediate structure, the shell is sleeved on the intermediate structure, the filter element is arranged between the structural body and the shell, the filter element surrounds the intermediate structure and shields the air inlet, one of the intermediate structure and the shell is provided with a snap-fitting protrusion, and the other of the intermediate structure and the shell is provided with a snap-fitting hole, and the snap-fitting protrusion is snapped into the snap-fitting hole.

[0006] Preferably, the engaging protrusion is formed on an outer side wall of an end of the intermediate structure close to the connector end, the engaging hole is provided at an end of the shell close to the connector end, and the engaging hole opens at the connector end.

[0007] Preferably, the shell is a transparent or translucent structure.

[0008] Preferably, a connecting channel communicating with the air inlet channel is further provided in the intermediate structure, the connecting channel is separated from the filtering channel and independently provided, and the air outlet is communicated with the connecting channel.

[0009] Preferably, the connecting channel extends in a radial direction of the intermediate structure, and the filtering channel extends in an axial direction of the intermediate structure.

[0010] Preferably, a plurality of air inlets are provided on the outer side wall of the intermediate structure, and the plurality of air inlets are spaced apart from each other and arranged in a circle around the central axis of the intermediate structure.

[0011] Preferably, the air inlet is a strip-shaped opening extending along the axial direction of the intermediate structure.

[0012] Preferably, a first sealing ring is embedded in one end of the intermediate structure close to the joint end, and a second sealing ring is embedded in one end of the intermediate structure close to the installation end.

[0013] Preferably, the joint end and the mounting end are respectively configured as quick joint structures; or, the joint end and the mounting end are respectively configured as threaded joint structures; or, one of the joint end and the mounting end is configured as a quick joint structure, and the other of the joint end and the mounting end is configured as a threaded joint structure.

[0014] Preferably, the micro filter of the utility model further comprises a threaded pad which is sleeved on the mounting end and is close to the outer shell.

[0015] Compared with the prior art, the micro filter of the utility model includes a structural body, a shell and a filter element, wherein the structural body includes a joint end and a mounting end respectively arranged at two ends and an intermediate structure arranged between the joint end and the mounting end, wherein the intermediate structure is provided with a snap-fitting protrusion, and the shell is provided with a snap-fitting hole, and the snap-fitting protrusion snaps into the snap-fitting hole, thereby strengthening the connection between the structural body and the shell, and the connection between the two is tight and not loose, ensuring that the applied torque can be effectively transmitted to the mounting end, and ensuring that the micro filter can be stably installed at the desired position. Since the connection between the structural body and the shell is tight and not loose, the applied torque is effectively transmitted to the mounting end, and at this time, even if the structural body and / or the shell are applied as a thin-walled structure or a structure made of low-strength materials, it is not easy to cause damage to the structure itself, and it is suitable for different application occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereogram of the micro filter of the utility model.

[0017] Figure 2 It is a stereoscopic view of the micro filter of the utility model at another angle.

[0018] Figure 3 It is a stereoscopic diagram of the micro filter of the utility model after the outer shell and the threaded pad are separated.

[0019] Figure 4 yes Figure 3The microfilter is shown in a perspective view with the filter element further separated.

[0020] Figure 5 It is a front view of the micro filter of the utility model.

[0021] Figure 6 is along Figure 5 Sectional view after cutting along the AA-line segment.

[0022] Figure 7 It is a front view of the micro filter of the utility model.

[0023] Figure 8 is along Figure 7 Sectional view after cutting along line segment BB. DETAILED DESCRIPTION

[0024] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the embodiments and the accompanying drawings.

[0025] The utility model discloses a micro filter 100, which has a relatively small size, a length in the range of 10 to 50 mm, and a diameter below 10 mm, but is not limited thereto. It can be seen that the size of the micro filter 100 of the utility model is much smaller than that of a traditional filter. The micro filter 100 of the utility model can meet the filtering needs of a narrow space, for example, it can be used in vacuum grippers and the like.

[0026] like Figures 1 to 7 As shown, the micro filter 100 of the utility model includes a columnar structural body 10, a housing 20 and a filter element 30. The structural body 10 includes a joint end 11 and a mounting end 12 respectively arranged at two ends, and an intermediate structure 13 arranged between the joint end 11 and the mounting end 12. An air inlet channel 14 is arranged in the joint end 11, and a filter channel 15 is arranged in the mounting end 12 and the intermediate structure 13. An air inlet 16 connected to the filter channel 15 is provided on the outer wall of the intermediate structure 13, and an air outlet 17 connected to the air inlet channel 14 is also provided on the outer wall of the intermediate structure 13. The air inlet 16 and the air outlet 17 are arranged at different positions of the intermediate structure 13 along the axial direction of the intermediate structure 13.

[0027] like Figure 5As shown, if the direction indicated by arrow Y is from bottom to top, which is also the axial direction of the intermediate structure 13, the mounting end 12 is located above the intermediate structure 13, and the joint end 11 is located below the intermediate structure 13, and the air inlet 16 is located above the air outlet 17, but the above positions do not constitute a limitation. The housing 20 is mounted on the intermediate structure 13, and the filter element 30 is arranged between the structural body 10 and the housing 20. The filter element 30 surrounds the intermediate structure 13 and shields the air inlet 16, while the air outlet 17 is not shielded and remains open. The air flowing in from the air inlet channel 14 flows out from the air outlet 17, passes through the filter element 30, flows through the air inlet 16 and flows into the filter channel 15, and the filter element 30 filters the air, and the filtered air flows out from the filter channel 15.

[0028] In the embodiment provided by the utility model, the intermediate structure 13 is provided with a snap-fit ​​protrusion 131, and the shell 20 is provided with a snap-fit ​​hole 21, and the snap-fit ​​protrusion 131 is snapped into the snap-fit ​​hole 21, thereby strengthening the connection between the structural body 10 and the shell 20, and the connection between the two is tight and not loose, ensuring that the applied torque can be effectively transmitted to the installation end 12, and ensuring that the micro filter 100 can be stably installed at the desired position. Since the connection between the structural body 10 and the shell 20 is tight and not loose, the applied torque is effectively transmitted to the installation end 12, at this time, even if the structural body 10 and / or the shell 20 is applied as a thin-walled structure or a structure made of low-strength material, it is not easy to cause damage to the structure itself, and it is suitable for different application occasions.

[0029] Preferably, according to actual needs, the engaging protrusion 131 may be disposed on the housing 20 , and the engaging hole 21 may be disposed on the intermediate structure 13 accordingly.

[0030] In the embodiment provided by the utility model, the housing 20 is cylindrical, the filter element 30 is annular, and the filter element 30 is made of polyethylene foam, which has high porosity and flexibility, is easy to process, and is not easy to break or tear under the impact of high-frequency pulse airflow, ensuring normal use. It should also be noted that the filter element 30 is replaceable, and by replacing the filter element 30 of the same shape and size but different filtration accuracy, different filtering needs can be met.

[0031] like Figures 1 to 4 As shown, the engaging protrusion 131 is formed on the outer wall of the middle structure 13 at one end close to the joint end 11, that is, the outer wall of the lower end of the middle structure 13. The engaging hole 21 is provided at one end of the outer shell 20 close to the joint end 11, and the engaging hole 21 opens at the joint end 11. During installation, the outer shell 20 is put on the middle structure 13 from top to bottom, and after it is in place, the engaging protrusion 131 is naturally inserted into the engaging hole 21, which facilitates the installation of both.

[0032] Preferably, the housing 20 is a transparent structure, through which the state of the filter element 30 can be directly observed for timely replacement. Of course, the housing 20 can be applied as a translucent structure according to actual needs.

[0033] like Figures 3 to 8 As shown, a connecting channel 18 connected to the air inlet channel 14 is also provided in the intermediate structure 13. The connecting channel 18 is separated from the filter channel 15 and is independently provided, and the air outlet 17 is connected to the connecting channel 18. The connecting channel 18 is provided to connect the air outlet 17 and the air inlet channel 14. Moreover, the connecting channel 18 and the filter channel 15 are separated from each other and are independent, and the two do not affect each other. The gas flowing out of the connecting channel 18 can flow into the filter channel 15 only through the filter element 30. Preferably, the connecting channel 18 extends along the radial direction of the intermediate structure 13, and the filter channel 15 extends along the axial direction of the intermediate structure 13, so as to avoid intersection between the two and facilitate arrangement. Specifically, the gas is along Figure 6 The air flows along the M and N segments, that is, it flows through the air inlet channel 14, the connecting channel 18, the air outlet 16, the air inlet 17 and the filter channel 15 in sequence.

[0034] like Figure 4 , Figure 6 and Figure 8 As shown, in order to improve the filtering efficiency, the outer wall of the intermediate structure 13 is provided with a plurality of air inlets 16, which are arranged at intervals and arranged in a circle around the central axis of the intermediate structure 13. Preferably, in the embodiment provided by the utility model, the outer wall of the intermediate structure 13 is provided with a total of 4 air inlets 16, but it is not limited thereto. Furthermore, the air inlet 16 is a strip-shaped opening extending along the axial direction of the intermediate structure 13, and the opening area of ​​the air inlet 16 is relatively large, thereby improving the passing efficiency of the gas. Specifically, the gas is passed along the Figure 8 The line segments O, P, Q, and R pass through the filter element 30 and flow into the filter channel 15 through the corresponding air inlet 16 .

[0035] like Figure 3 , Figure 4 and Figure 6 As shown, a first sealing ring 40 is embedded in one end of the intermediate structure 13 close to the joint end 11, and a second sealing ring 50 is embedded in one end of the intermediate structure 13 close to the mounting end 12. The first sealing ring 40 and the second sealing ring 50 strengthen the seal between the intermediate structure 13 and the housing 20 to prevent gas leakage. It should be noted that in the embodiment provided by the utility model, the second sealing ring 50 is located above the first sealing ring 40.

[0036] like Figures 1 to 7In the embodiment provided by the utility model, the joint end 11 is configured as a quick joint structure, which can be in the form of quick plug, quick twist, pagoda, etc., and the installation end 12 is configured as a threaded joint structure, that is, a thread is formed on the outer side. Of course, according to actual needs, the joint end 11 can also be configured as a threaded connection structure, and the installation end 12 can be configured as a quick joint structure; or, both the joint end 11 and the installation end 12 are configured as quick joint structures; or, both the joint end 11 and the installation end 12 are configured as threaded joint structures.

[0037] like Figures 2 to 7 As shown, in order to strengthen the seal between the micro filter 100 and other structures, the micro filter 100 of the present invention further includes a threaded gasket 60 which is sleeved on the mounting end 12 and abuts against the housing 20 .

[0038] During installation, a torque is applied to rotate the micro filter 100, and the mounting end 12 is screwed into the position to be installed. With the engagement of the engagement protrusion 131 with the engagement hole 21, the connection between the structural body 10 and the shell 20 is strengthened. The applied torque can be transmitted to the mounting end 12 through the shell 20 and the structural body 10 at the same time, ensuring the effective implementation of the tightening force of the thread of the mounting end 12.

[0039] The above disclosure is only a preferred example of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A micro filter, characterized in that: The filter element is provided between the structural body and the housing, and the filter element is provided between the structural body and the housing, ...

2. The microfilter according to claim 1, characterized in that The engaging protrusion is formed on the outer wall of one end of the intermediate structure close to the joint end, the engaging hole is arranged on one end of the shell close to the joint end, and the engaging hole opens at the joint end.

3. The microfilter according to claim 1, characterized in that The shell is a transparent or translucent structure.

4. The microfilter according to claim 1, characterized in that A connecting channel communicating with the air inlet channel is also provided in the intermediate structure. The connecting channel is separated from the filter channel and independently provided. The air outlet is communicated with the connecting channel.

5. The microfilter according to claim 4, characterized in that The connecting channel extends in a radial direction of the intermediate structure, and the filtering channel extends in an axial direction of the intermediate structure.

6. The microfilter according to claim 1, characterized in that The outer wall of the intermediate structure is provided with a plurality of air inlets, and the plurality of air inlets are arranged at intervals from each other and are arranged in a circle around the central axis of the intermediate structure.

7. The microfilter according to claim 1, characterized in that The air inlet is a strip-shaped opening extending along the axial direction of the intermediate structure.

8. The microfilter according to claim 1, characterized in that A first sealing ring is embedded in one end of the intermediate structure close to the joint end, and a second sealing ring is embedded in one end of the intermediate structure close to the installation end.

9. The microfilter according to claim 1, characterized in that The joint end and the mounting end are respectively configured as quick joint structures; or, the joint end and the mounting end are respectively configured as threaded joint structures; or, one of the joint end and the mounting end is configured as a quick joint structure, and the other of the joint end and the mounting end is configured as a threaded joint structure.

10. The microfilter according to claim 1, characterized in that It also includes a threaded pad which is sleeved on the mounting end and is close to the shell.

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