Oil mist filtering device for automatic oiling machine of dental handpiece

Abstract

The invention relates to the technical field of oiling machine filtering, and discloses an oil mist filtering device for an automatic oiling machine of a dental handpiece, which comprises a filtering box, a plurality of filtering sheets, a filtering groove and a plurality of oil outlet holes, the plurality of filter sheets are stacked in the filter tank along the opening direction of the filter tank, the filter sheet farthest away from the tank bottom of the filter tank is in a working state and is used for filtering oil mist, the plurality of oil outlet holes are respectively formed in the filter box, and the sections of the plurality of oil outlet holes are strip-shaped along the opening direction of the filter tank. According to the invention, the plurality of filter sheets are stacked in the filter tank along the opening direction of the filter tank, and the filter sheet farthest away from the tank bottom of the filter tank can be conveniently taken out in the oil injection process, so that the effect of quickly replacing the filter sheets is achieved, and particularly, the workload can be greatly reduced when large-batch oil injection operation is carried out.

Description

Technical Field

[0001] This application relates to the technical field of oil injection machine filtration, and particularly to an oil mist filtration device for an automatic oil injection machine for dental handpieces. Background Art

[0002] Dental handpieces are the most commonly used precision and high-performance instruments in the stomatology department. They have a complex structure, high price, and high usage and turnover rates. Before sterilization, dental handpieces need to be lubricated with oil. Because during the high-temperature sterilization process, if the precision parts of the dental handpiece bearings are not protected by lubricating oil, it is easy to cause fatigue damage to the bearing parts. At the same time, oil injection lubrication is also a way to clean the dental handpiece pipeline again.

[0003] The automatic oil injection machine for dental handpieces is also called a dental handpiece maintenance system, which can lubricate the dental handpieces with oil. When maintaining and servicing dental handpieces, an oil mist filter block is placed on the front cover of the oil injection machine to filter and absorb the oil mist sprayed out from the functional end of the dental handpiece during the oil injection process. The color of the lubricating oil sprayed out from some dental handpieces at first is black (due to carbonization of the bearings at the functional end of the handpiece). As the oil injection machine continuously injects oil and lubricates the dental handpiece, the lubricating oil sprayed out from the functional end will gradually change from black to transparent. If all the oil sprayed out from the functional end during the oil injection process accumulates in the same position on the oil mist filter block, or the oil mist filter block becomes completely black after long-term use, it is impossible to directly observe the process of the lubricating oil changing from black to transparent, and thus it is impossible to determine whether the maintenance and servicing of the dental handpiece have met the standards and requirements of oil injection maintenance.

[0004] In order to better judge whether the dental handpiece meets the maintenance requirements, currently, a layer of white gauze is mainly laid on the oil mist filter block, and the gauze is manually replaced multiple times to observe and judge the process of the lubricating oil changing from black to transparent. However, continuously replacing the gauze during the oil injection process will increase the workload, and since each maintenance and servicing of dental handpieces is carried out in large quantities, the maintenance work of dental handpieces becomes more cumbersome and complex.

[0005] Therefore, the existing technology still needs to be improved and developed, lacking a device that can quickly replace the white gauze. Summary of the Invention

[0006] In view of the deficiencies of the existing technology, the present invention stacks a plurality of filter sheets in the filter groove along the opening direction of the filter groove. During the oil injection process, the filter sheet farthest from the bottom of the filter groove can be easily pulled out, achieving the effect of quickly replacing the filter sheet. Especially when a large number of oil injection operations are carried out, the workload can be greatly reduced.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: an oil mist filtering device for an automatic oiling machine of a dental handpiece, comprising: a filter box, the filter box is used to be installed on the oiling machine;

[0008] A filter tank, wherein the filter tank is arranged on the filter box, and an opening of the filter tank forms an oil inlet;

[0009] A plurality of filter sheets, wherein the plurality of filter sheets are stacked and arranged in the filter tank along the opening direction of the filter tank, and the filter sheet farthest from the bottom of the filter tank is in a working state for filtering oil mist;

[0010] A plurality of oil outlet holes are respectively arranged on the filter box, the plurality of oil outlet holes are all connected with the filter tank, and the cross-sectional shapes of the plurality of oil outlet holes are all strips arranged along the opening direction of the filter tank.

[0011] Further, the filter sheet comprises: a filter layer, the filter layer is used to filter the oil mist;

[0012] An isolation layer is arranged at one end of the filter layer facing the bottom of the groove, and the isolation layer is used to cover the filter layer adjacent thereto.

[0013] Furthermore, a plurality of the oil outlet holes are arranged at intervals along the edges of a plurality of the filter sheets;

[0014] The surface of the isolation layer facing the filter layer is provided with a plurality of guide grooves, one end of each of the guide grooves is arranged toward the corresponding oil outlet holes, and the surface of the filter layer facing away from the isolation layer is a plane.

[0015] Furthermore, the shapes of several guide grooves are spirals, and one end of several guide grooves is located in the middle of the filter layer, and the other end faces the corresponding oil outlet hole.

[0016] Furthermore, the oil mist filtering device for the automatic oiling machine of a dental handpiece further comprises: a homing module, the homing module is arranged in the filter tank, and the homing module is used to move the filter sheet in a working state to a preset position.

[0017] Further, the homing module includes: a driving member, the driving member is arranged in the filter tank, and the driving member is used to drive the plurality of filter plates to move along a driving direction, and the driving direction is a direction in which the plurality of filter plates are away from the bottom of the tank;

[0018] A limit block is connected to the filter box, the filter plates at the preset position are in contact with the limit block, and the limit block is used to limit the movement of a plurality of the filter plates along the driving direction.

[0019] Further, the driving member includes: a bottom plate disposed between several of the filter sheets and the bottom of the groove, and the bottom plate is used to support several of the filter sheets;

[0020] An elastic member disposed between the bottom plate and the bottom of the groove, and the elastic member is used to drive the bottom plate to move in a direction away from the bottom of the groove.

[0021] Further, the oil mist filtering device of the dental handpiece automatic oil injector further includes: a disposal hole penetrating through the filter box and connected to the opening of the filter groove;

[0022] The limiting block is arc-shaped, and the opening of the limiting block faces the disposal hole.

[0023] Further, the reset module further includes: an attachment portion disposed on the surface of the limiting block facing the filter sheet, and the attachment portion is used for detachably connecting to the filter sheet in the preset position.

[0024] Further, the limiting block includes: a first limiting portion connected to the filter box;

[0025] A second limiting portion hinged to the first limiting portion, and the attachment portion is disposed on the second limiting portion.

[0026] Beneficial effects: By stacking several filter sheets in the filter groove along the opening direction of the filter groove, the filter sheet farthest from the bottom of the filter groove can be easily pulled out during the oil injection process, achieving the effect of quickly replacing the filter sheet. Especially when a large number of oil injection operations are carried out, the workload can be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the oil mist filtering device of the dental handpiece automatic oil injector provided by the present invention (when installed on the oil injector);

[0028] Figure 2 is a schematic structural diagram of the oil mist filtering device of the dental handpiece automatic oil injector provided by the present invention (when not installed on the oil injector);

[0029] Figure 3 For the present invention Figure 2 explosion schematic diagram;

[0030] Figure 4 is a sectional view of the oil mist filtering device of the dental handpiece automatic oil injector provided by the present invention;

[0031] Figure 5For the present invention Figure 4 is a partial enlarged view of part A;

[0032] Figure 6 is a schematic structural view of a filter sheet provided for another embodiment.

[0033] The reference numerals in the drawings are: 100, filter box; 110, filter groove; 120, oil outlet hole; 130, waste hole; 200, filter sheet; 210, filter layer; 220, isolation layer; 221, diversion groove; 310, driving member; 311, bottom plate; 312, elastic member; 320, limiting block; 321, first limiting portion; 322, second limiting portion; 400, oil injector. Detailed implementation manners

[0034] The present invention provides an oil mist filtering device for an automatic oil injector of a dental handpiece. To make the objectives, technical solutions and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0036] It should also be noted that the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0038] Next, with reference to the accompanying drawings, the content of the invention will be further described by describing the embodiments.

[0039] This embodiment provides an oil mist filtering device for an automatic oil injector 400 of a dental handpiece. As Figures 1 to 6 shown, to solve the above technical problems, the technical solution adopted by the present invention is as follows: It includes a filter box 100 and several filter sheets 200. Among them, a filter slot 110 and several oil outlet holes 120 are provided on the filter box 100, and the filter box 100 is used to be installed on the oil injector 400.

[0040] Several filter sheets 200 are stacked in the filter slot 110 along the opening direction of the filter slot 110. The filter sheet 200 farthest from the bottom of the filter slot 110 is in a working state for filtering oil mist. During actual use, the opening of the filter slot 110 is set upward, and the filter sheet 200 in the working state is located at the top layer. The opening of the filter slot 110 forms an oil inlet for receiving the oil overflowing from the functional end of the dental handpiece during the oil injection operation. When the lubricating oil contacts the filter sheet 200 at the top layer, the impurities on the lubricating oil will be intercepted by the filter sheet 200 at the top layer, causing the filter sheet 200 to gradually turn black, which is convenient for the operator to observe. During this period, the operator can judge according to experience whether the filter sheet 200 needs to be replaced (such as when the degree of color deepening of the filter sheet 200 becomes smaller or unchanged). When the operator needs to replace the filter sheet 200, the filter sheet 200 at the top layer can be pinched or clamped by tools such as hands or clips and then pulled out, so that the remaining filter sheets 200 are exposed, so as to achieve the effect of quickly replacing the filter sheet 200.

[0041] Several oil outlet holes 120 are all communicated with the filter slot 110, and the cross-sectional shapes of several oil outlet holes 120 are all strip-shaped along the opening direction of the filter slot 110. As Figure 1 at least Figure 3 shown, the cross-sectional shapes of several oil outlet holes 120 are vertical strip-shaped, and several oil outlet holes 120 are arranged around several filter sheets 200. Preferably, all the filter sheets 200 in the filter slot 110 can be directly observed through several oil outlet holes 120. During actual use, when the oil overflowing from the functional end of the dental handpiece during the oil injection operation contacts the filter sheet 200 at the top layer, the oil filtered by the filter sheet 200 at the top layer becomes translucent and then contacts the filter sheet 200 below it, and will not contaminate the filter sheet 200 below it. Therefore, after the filter sheet 200 at the top layer is pulled out, the exposed filter sheet 200 is relatively clean and can well reflect the oil color. At the same time, due to the position of the oil outlet holes 120, the lubricating oil filtered by the filter sheet 200 at the top layer can flow out from the side of the filter box 100, without having to pass through all the filter sheets 200 and then leave the filter box 100.

[0042] In one embodiment, as Figures 2 to 6As shown in , the filter sheet 200 includes: a filter layer 210 and an isolation layer 220. The filter layer 210 is used to filter oil mist. The isolation layer 220 is arranged at one end of the filter layer 210 facing the bottom of the groove. The isolation layer 220 is used to cover the filter layer 210 adjacent thereto.

[0043] During actual use, the filter layer 210 in working condition (located on the top layer) is used to filter the lubricating oil and can also display the color of the oil (judged by the color of the filter layer 210); the isolation layer 220 is used to guide the lubricating oil filtered by the filter layer 210 to the side of the filter box 100 to prevent the lubricating oil from directly reaching the next layer and contacting the filter plate 200.

[0044] Preferably, the filter layer 210 is made of gauze or other materials, and is white, beige or other light colors, preferably white, for easy identification of the color of the lubricating oil. The isolation layer 220 is made of oleophobic materials such as plastic film.

[0045] In one embodiment, a plurality of oil outlet holes 120 are arranged at intervals along the edges of a plurality of filter sheets 200;

[0046] The surface of the isolation layer 220 facing the filter layer 210 has a plurality of guide grooves 221 , one end of each of the guide grooves 221 is disposed toward the corresponding oil outlet 120 , and the surface of the filter layer 210 facing away from the isolation layer 220 is a plane.

[0047] In actual use, the plurality of guide grooves 221 can guide the lubricating oil in contact with them to the oil outlet 120, so as to facilitate the lubricating oil to flow out without contaminating the filter sheet 200 at the lower layer. Preferably, the guide grooves 221 are formed by reciprocating folding of the isolation layer 220.

[0048] In one embodiment, Figure 6 As shown in , the shapes of the guide grooves 221 are all spirals, and one end of the guide grooves 221 is located in the middle of the filter layer 210 and the other end faces the corresponding oil outlet hole 120 .

[0049] In actual use, if the oil spilled from the functional end during the oil filling process is concentrated at the same position on the filter layer 210, the color change at this position is not obvious, and it is impossible to visually observe the process of the lubricating oil changing from black to transparent, and it is impossible to judge whether the maintenance of the dental handpiece has met the standards and requirements for oil filling and maintenance. Therefore, by setting the shape of the plurality of guide grooves 221 to be spiral, the lubricating oil can move along the spiral of the guide grooves 221 and toward the side of the filter box 100. Compared with the ordinary filter 200, the movement distance of the lubricating oil on the filter 200 is greater and more uniform, which can alleviate the problem that the oil spilled from the functional end during the oil filling process is concentrated at the same position on the filter layer 210, resulting in the color change at this position is not obvious.

[0050] In one embodiment, as Figure 6 shown, the area of the isolation layer 220 is larger than that of the filter layer 210, and the edge of the isolation layer 220 protrudes beyond the edge of the filter layer 210, which can more effectively guide the lubricating oil filtered by the filter layer 210 and prevent the filtered lubricating oil from flowing to the next filter sheet 200. The middle part of the isolation layer 220 is recessed towards the filter layer 210, making the middle part of the isolation layer 220 higher than the edge during actual use, facilitating the guiding of the lubricating oil in contact with it to the oil outlet hole 120 and facilitating the outflow of the lubricating oil without contaminating the lower filter sheet 200.

[0051] In one embodiment, as Figure 2 、 Figure 4 shown, the oil mist filtering device of the dental handpiece automatic oil injector 400 further includes: a positioning module, which is arranged in the filtering tank 110 and is used to move the filter sheet 200 in the working state to a preset position.

[0052] During actual use, when the operator needs to replace the filter sheet 200, the filter sheet 200 on the top layer can be pinched or clamped by hand or tools such as clips and then pulled out, so that the remaining filter sheets 200 are exposed, achieving the effect of quickly replacing the filter sheet 200. By setting the positioning module, the remaining filter sheets 200 can be driven to move upward, so that the filter sheet 200 on the top layer among the remaining filter sheets 200 returns to the position of the originally pulled-out filter sheet 200.

[0053] In one embodiment, as Figure 2 、 Figure 4 shown, the positioning module includes: a driving member 310, which is arranged in the filtering tank 110 and is used to drive several filter sheets 200 to move along the driving direction, and the driving direction is the direction in which several filter sheets 200 deviate from the bottom of the tank. As Figure 3 shown, the driving member 310 can drive several filter sheets 200 to move upward;

[0054] a limiting block 320, which is connected to the filter box 100, and the filter sheet 200 in the preset position contacts the limiting block 320, and the limiting block 320 is used to limit the movement of several filter sheets 200 along the driving direction.

[0055] In one embodiment, as Figure 2 、 Figure 4 shown, the driving member 310 includes: a bottom plate 311, which is arranged between several filter sheets 200 and the bottom of the tank, and the bottom plate 311 is used to support several filter sheets 200;

[0056] The elastic member 312 is disposed between the bottom plate 311 and the bottom of the groove. The elastic member 312 is used to drive the bottom plate 311 to move in a direction away from the bottom of the groove.

[0057] In one embodiment, as Figures 1 to 3 shown in, the oil mist filtering device of the dental handpiece automatic oiler 400 further includes: a discard hole 130 which is disposed through the filter cartridge 100, and the discard hole 130 is connected to the opening of the filter tank 110;

[0058] The limiting block 320 is arc-shaped, and the opening of the limiting block 320 faces the discard hole 130.

[0059] During actual use, as Figure 3 shown in, when the operator needs to replace the filter sheet 200, the operator can pass a hand or a tool such as a clip through the discard hole 130, and pinch or clamp the filter sheet 200 at the outermost layer and then pull it out. By providing the discard hole 130, it is convenient for the operator to separate the filter sheet 200 at the outermost layer from the remaining filter sheets 200, and to avoid pulling out multiple filter sheets 200 at the same time.

[0060] In one embodiment, the return module further includes: an attachment portion which is disposed on the surface of the limiting block 320 facing the filter sheet 200, and the attachment portion is used for detachably connecting to the filter sheet 200 at a preset position.

[0061] Preferably, the attachment portion can stick the filter sheet 200, such as the hook surface of a magic tape. When the operator needs to replace the filter sheet 200, the operator can first press the middle part of the filter sheet 200, so that the middle part of the filter sheet 200 moves downward, while the limiting block 320 does not move accordingly. Therefore, through this operation, the edge of the filter sheet 200 at the outermost layer can be easily separated from the edges of the remaining filter sheets 200, which is convenient for the operator to pinch or clamp the filter sheet 200 at the outermost layer with a hand or a tool and then pull it out.

[0062] In one embodiment, as Figure 3 shown in, the limiting block 320 includes: a first limiting portion 321 which is connected to the filter cartridge 100;

[0063] a second limiting portion 322 which is hinged to the first limiting portion 321, and the attachment portion is disposed on the second limiting portion 322.

[0064] During actual use, the second limiting portion 322 can be turned upwards. When the operator needs to replace the filter sheet 200, the second limiting portion 322 can be driven to turn upwards. At this time, the second limiting portion 322 drives the attachment portion to move upwards, and the filter sheet 200 (the uppermost filter sheet 200) connected thereto can be directly separated from the remaining filter sheets 200. At this time, it is very easy to pinch or clamp the filter sheet 200 located at the uppermost layer with tools such as hands or clips and then pull it out.

[0065] In summary, the present application relates to the technical field of oil injection machine filtration, and discloses an oil mist filtration device for a dental handpiece automatic oil injection machine, which includes a filter box, a plurality of filter sheets, and a filter slot and a plurality of oil outlet holes respectively arranged on the filter box. The filter box is used to be installed on the oil injection machine. The plurality of filter sheets are stacked in the filter slot along the opening direction of the filter slot. The filter sheet farthest from the bottom of the filter slot is in a working state for filtering oil mist. The plurality of oil outlet holes are respectively arranged on the filter box, and the cross-sectional shapes of the plurality of oil outlet holes are all strip-shaped arranged along the opening direction of the filter slot. By stacking the plurality of filter sheets in the filter slot along the opening direction of the filter slot, the present invention can easily pull out the filter sheet farthest from the bottom of the filter slot during the oil injection process, achieving the effect of quickly replacing the filter sheet. Especially when a large number of oil injection operations are carried out, the workload can be greatly reduced.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil mist filter for an automatic oiling machine for a dental handpiece, characterized in that: include: A filter box, the filter box is used to be installed on the oil injection machine; A filter tank, wherein the filter tank is arranged on the filter box, and an opening of the filter tank forms an oil inlet; A plurality of filter sheets, wherein the plurality of filter sheets are stacked and arranged in the filter tank along the opening direction of the filter tank, and the filter sheet farthest from the bottom of the filter tank is in a working state for filtering oil mist; A plurality of oil outlet holes are respectively arranged on the filter box, the plurality of oil outlet holes are all connected with the filter tank, and the cross-sectional shapes of the plurality of oil outlet holes are all strips arranged along the opening direction of the filter tank.

2. The oil mist filter device for the automatic oil filling machine of a dental handpiece according to claim 1, characterized in that: The filter It includes: a filter layer, the filter layer is used to filter oil mist; An isolation layer is arranged at one end of the filter layer facing the bottom of the groove, and the isolation layer is used to cover the filter layer adjacent thereto.

3. The oil mist filter device for the automatic oil filling machine of a dental handpiece according to claim 2, characterized in that: A plurality of the oil outlet holes are arranged at intervals along the edges of a plurality of the filter sheets; The surface of the isolation layer facing the filter layer is provided with a plurality of guide grooves, one end of each of the guide grooves is arranged toward the corresponding oil outlet holes, and the surface of the filter layer facing away from the isolation layer is a plane.

4. The oil mist filter device for the automatic oil filling machine of a dental handpiece according to claim 3, characterized in that: The shapes of several guide grooves are all spirals, and one end of several guide grooves is located in the middle of the filter layer, and the other end faces the corresponding oil outlet hole.

5. The oil mist filter device for the automatic oil filling machine of a dental handpiece according to any one of claims 1 to 4, characterized in that: The oil mist filtering device for the automatic oiling machine of a dental handpiece further comprises: a homing module, which is arranged in the filter tank and is used to move the filter sheet in a working state to a preset position.

6. The oil mist filter device for the automatic oil filling machine of a dental handpiece according to claim 5, characterized in that: The homing module comprises: a driving member, the driving member is arranged in the filter tank, and the driving member is used to drive the plurality of filter plates to move along a driving direction, and the driving direction is a direction in which the plurality of filter plates are away from the tank bottom; A limit block is connected to the filter box, the filter plates at the preset position are in contact with the limit block, and the limit block is used to limit the movement of a plurality of the filter plates along the driving direction.

7. The oil mist filter device for the automatic oil filling machine of a dental handpiece according to claim 6, characterized in that: The driving member comprises: a bottom plate, the bottom plate is arranged between the plurality of filter plates and the bottom of the tank, and the bottom plate is used to support the plurality of filter plates; An elastic member is arranged between the bottom plate and the groove bottom, and is used for driving the bottom plate to move in a direction away from the groove bottom.

8. The oil mist filter device for the automatic oil filling machine of a dental handpiece according to claim 6, characterized in that: The oil mist filter device for the automatic oil filling machine of the dental handpiece further comprises: a discard hole, the discard hole is arranged through the filter box, and the discard hole is connected to the opening of the filter tank; The limiting block is in an arc shape, and the opening of the limiting block is arranged toward the disposal hole.

9. The oil mist filter device for the automatic oil filling machine of a dental handpiece according to claim 6, characterized in that: The homing module further includes: an attachment portion, which is disposed on a surface of the limiting block facing the filter plate, and is used for being detachably connected to the filter plate at the preset position.

10. The oil mist filter device for the automatic oil filling machine of a dental handpiece according to claim 9, characterized in that: The limiting block comprises: a first limiting portion, the first limiting portion being connected to the filter box; A second limiting portion, wherein the second limiting portion is hinged to the first limiting portion, and the attachment portion is arranged on the second limiting portion.

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