Filtering structure of vacuum drying box

Abstract

The utility model relates to the technical field of vacuum drying ovens, and provides a filtering structure of a vacuum drying oven, which comprises a vacuum drying oven body, the side end of the vacuum drying oven body is fixedly connected with a suction pipe, one end of the suction pipe is fixedly connected with a vacuum pump, and the top end of the vacuum pump is fixedly connected with an oil mist pipe. A filtering assembly is arranged at the top end of the oil mist pipe and comprises a connecting pipe connected to the top end of the oil mist pipe in a clamped mode, and a filter is fixedly connected to the top end of the connecting pipe. Gas pumped out of the vacuum drying box body by the vacuum pump is filtered through the dust removal cloth bag in the filter, so that oil mist and dust are separated, and the situation that cakes formed by the oil mist and the dust are attached to the interior of a filter element, so that the service life and the using effect of the filter element are affected is prevented; meanwhile, the dust cavity between the connecting pipe and the guide pipe is convenient for the filtered dust to fall off and to be discharged from the dust removal opening, so that the filtered dust is convenient to clean.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vacuum drying oven technical field, specifically, relate to a kind of filter structure of vacuum drying oven. BACKGROUND

[0002] ‌Vacuum drying oven‌It is a kind of equipment in vacuum or close to vacuum environment drying treatment, mainly for drying heat-sensitive, easy to decompose, easy to oxidize and the material of complex composition.The core function includes quickly removing the moisture or other volatile components in material, while avoiding the damage of high temperature to material, ensure the quality of material after drying.Vacuum drying oven reduces the air pressure around material, so that moisture or other volatile components rapidly evaporate at lower temperature, to achieve the purpose of drying.In vacuum state, the boiling point of water will be reduced, so even if heating temperature is not high, water in material can be effectively removed.In addition, vacuum environment can effectively prevent material from being oxidized or other chemical reactions in drying process.Vacuum drying oven needs to be connected or installed vacuum pump, and in working process, the gas discharged by vacuum pump needs to be filtered, to achieve the purpose of protecting environment.

[0003] Vacuum pump needs to add vacuum pump oil in its interior before use, and in working process of vacuum pump, vacuum pump oil is volatilized by heat, and simultaneously, dust discharged in the process of vacuumizing of vacuum drying oven can be combined with volatilized oil dirt and condense, and condensed oil dirt is attached to the interior of filter core, to greatly shorten the service life of filter core, and also can affect the use effect of filter core.For this reason, a kind of filter structure of vacuum drying oven is proposed, and dust in discharged oil mist is filtered by dust cloth bag to solve the above problems. CONTENT OF UTILITY MODEL

[0004] The utility model proposes a kind of filter structure of vacuum drying oven, solves the problem that dust extracted in relevant technology is directly combined with oil mist and attached to the interior of filter core, to affect the service life and use effect of filter core.

[0005] The technical scheme of the utility model is as follows:

[0006] The utility model provides a filter structure of vacuum drying oven, including vacuum drying oven body, the side end of vacuum drying oven body is fixedly connected with the pipe of drawing, one end of the pipe of drawing is fixedly connected with vacuum pump, the top of vacuum pump is fixedly connected with oil mist pipe, the top of oil mist pipe is equipped with filter assembly, filter assembly includes the connecting pipe of joint in the top of oil mist pipe, the top of connecting pipe is fixedly connected with filter, the inner wall bottom side of filter is connected with the card board, the inside fixedly connected with the smoke guide of connecting pipe, the top of smoke guide is fixedly connected with the guide pipe, the guide pipe with card board intercommunication, the inside of filter is equipped with filter cavity, the inside of filter cavity is equipped with dust cloth bag, dust cloth bag with card board fixed connection.

[0007] Optionally, the top of the card board is provided with a through hole, the inner circle radius of the connecting pipe is greater than the outer circle radius of the guide pipe, and the connecting pipe and the guide pipe are provided with an ash cavity.

[0008] Optionally, the filter assembly further comprises a dust removal port symmetrically provided on the outer end of the connecting pipe, the dust removal port is in communication with the ash cavity, the inner cavity of the guide pipe is fixedly connected with a clamping ring, the inside of the clamping ring is rotatably connected with a shielding piece, and the clamping ring and the shielding piece are fixedly connected with a torsion spring.

[0009] Optionally, the filter assembly further comprises a dust collecting hopper connected to the outer end of the connecting pipe, the dust collecting hopper corresponds in position to the dust removal port, and the cross section of the dust collecting hopper is in the shape of an inverted funnel.

[0010] Optionally, the inner wall of the filter is fixedly connected with a connecting plate, the inside of the filter is provided with a smoke cavity, the top of the filter is connected with a clamping cover, the top of the clamping cover is fixedly connected with a discharge pipe and is in communication, the inside of the smoke cavity is connected with a filter element, and the connecting plate is in communication with the filter element.

[0011] Optionally, a sealing ring is connected between the pipe of drawing and the connecting pipe, and a fixed clamp is connected between the pipe of drawing and the connecting pipe.

[0012] Optionally, the inner wall of the clamping cover is fixedly connected with a side rod, the inside of the side rod is slidingly connected with a sliding rod, the bottom end of the sliding rod is fixedly connected with a pressing plate, and the pressing plate is slidingly connected in the inside of the clamping cover.

[0013] Optionally, the top of the pressing plate is provided with an air hole, and the side rod and the sliding rod are fixedly connected with a supporting spring.

[0014] The working principle and beneficial effects of the utility model are as follows:

[0015] The dust cloth bag inside the filter filters the gas drawn out from the vacuum drying box body by the vacuum pump, so that oil mist and dust are separated, the agglomerate formed by the oil mist and dust is prevented from adhering to the inside of the filter core, and the service life and use effect of the filter core are affected, meanwhile, the ash cavity between the connecting pipe and the conduit is convenient for the filtered dust to fall off and be discharged from the dust removal port, and the filtered dust is convenient to clean. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above characteristics, technical features, advantages and implementation manners of the present application will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.

[0017] Figure 1 It is a structural schematic view of the present application;

[0018] Figure 2 It is a structural schematic view of the vacuum pump of the present application;

[0019] Figure 3 It is an internal structural schematic view of the filter of the present application;

[0020] Figure 4 It is a connecting structural schematic view of the snap ring and the shielding piece of the present application;

[0021] Figure 5 It is a structural schematic view of the dust collecting hopper of the present application;

[0022] Figure 6 It is an internal structural schematic view of the cover of the present application.

[0023] In the drawings: 1, vacuum drying box body; 2, suction pipe; 3, vacuum pump; 4, oil mist pipe; 5, filter assembly; 501, connecting pipe; 502, filter; 503, clamping plate; 504, smoke collecting hopper; 505, conduit; 506, filter cavity; 507, dust cloth bag; 508, dust removal port; 509, snap ring; 5010, shielding piece; 5011, dust collecting hopper; 6, connecting plate; 7, smoke cavity; 8, cover; 9, discharge pipe; 10, filter core; 11, sealing ring; 12, fixing clamp; 13, side rod; 14, sliding rod; 15, pressing plate; 16, supporting spring. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0025] For the sake of simplicity of the drawings, only the parts related to the utility model are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0026] In this article, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In addition, in the description of the present application, the terms "first", "second" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance.

[0028] Example 1

[0029] Reference Figures 1-5For the first embodiment of the utility model, propose a kind of filtering structure of vacuum drying oven, including vacuum drying oven body 1, the side end of vacuum drying oven body 1 is fixedly connected with suction pipe 2, one end of suction pipe 2 is fixedly connected with vacuum pump 3, the top of vacuum pump 3 is fixedly connected with oil mist pipe 4, the top of oil mist pipe 4 is equipped with filter assembly 5, filter assembly 5 includes the connecting pipe 501 of being connected to the top of oil mist pipe 4, the top of connecting pipe 501 is fixedly connected with filter 502, the inner wall bottom side of filter 502 is connected with clamping plate 503, the inside of connecting pipe 501 is fixedly connected with smoke guide 504, the top of smoke guide 504 is fixedly connected with duct 505, duct 505 is connected with clamping plate 503, the inside of filter 502 is equipped with filter cavity 506, the inside of filter cavity 506 is equipped with dust cloth bag 507, dust cloth bag 507 is fixedly connected between clamping plate 503.This kind of setting purpose is to connect between vacuum pump 3 using suction pipe 2 before the inside of vacuum drying oven body 1 is carried out vacuumizing, and vacuum pump oil is injected into the inside of vacuum pump 3, while the inside of vacuum drying oven body 1 is carried out vacuumizing, the oil mist generated by vacuum pump 3 and the gas in the inside are discharged into filter 502 from duct 505, mixed gas enters dust cloth bag 507 at this time, dust cloth bag 507 filters and separates dust and oil mist, dust is retained in the inside of dust cloth bag 507, filters dust, reduces the content of dust and oil mist condensation and attachment in filter core 10 inside, to prolong the service life of filter core 10, also avoid the influence of filter effect of filter core 10.

[0030] Optionally, the top of clamping plate 503 is equipped with through hole, the inner circle radius of connecting pipe 501 is greater than the outer circle radius of duct 505, ash cavity is equipped between connecting pipe 501 and duct 505, the bottom side of the inner chamber of filter 502 is inclined.This kind of setting purpose is that dust falls by gravity and enters ash cavity between connecting pipe 501 and duct 505 from clamping plate 503 after vacuum pump 3 stops working.

[0031] Optionally, filter assembly 5 further includes dust removal port 508 symmetrically equipped in the outer end of connecting pipe 501, dust removal port 508 is connected with ash cavity, the inner chamber of duct 505 is fixedly connected with snap ring 509, the inside of snap ring 509 is rotatably connected with shielding piece 5010, torsion spring is fixedly connected between snap ring 509 and shielding piece 5010.This kind of setting purpose is that shielding piece 5010 in the inside of snap ring 509 is lifted up by gas pressure during the process of exhausting, so that gas passes through duct 505, when vacuum pump 3 stops working, torsion spring drives shielding piece 5010 to reset, to avoid dust from entering duct 505 again.

[0032] Optionally, the filter assembly 5 further comprises a dust collecting bin 5011 clamped to the outer end of the connecting pipe 501, the dust collecting bin 5011 corresponds to the position of the dust removal port 508, and the cross section of the dust collecting bin 5011 is in the shape of an inverted funnel. The purpose of this setting is that the dust collecting bin 5011 is arranged to collect the dust discharged from the ash cavity.

[0033] Optionally, the inner wall of the filter 502 is fixedly connected with a connecting plate 6, the inside of the filter 502 is provided with a smoke cavity 7, the top end of the filter 502 is clamped with a clamping cover 8, the top end of the clamping cover 8 is fixedly connected with a discharge pipe 9 and is connected in communication, the inside of the smoke cavity 7 is clamped with a filter core 10, and the connecting plate 6 is connected in communication with the filter core 10. The purpose of this setting is that the gas after dust separation enters the filter core 10, the filter core 10 filters the oil mist, and the oil mist is discharged from the discharge pipe 9, thereby reducing the pollution of the environment.

[0034] Embodiment 2

[0035] Reference Figures 1-6 For the second embodiment of the utility model, which is different from the first embodiment:

[0036] Compared with embodiment 1, the sealing ring 11 is clamped between the pipe 2 and the connecting pipe 501, and the fixing clamp 12 is clamped between the pipe 2 and the connecting pipe 501. The purpose of this setting is that the sealing ring 11 enhances the sealing property of the connection between the pipe 2 and the connecting pipe 501, and the fixing clamp 12 facilitates clamping and fixing the connecting pipe 501 and the oil mist pipe 4.

[0037] Optionally, the inner wall of the clamping cover 8 is fixedly connected with a side rod 13, the inside of the side rod 13 is slidingly connected with a sliding rod 14, the bottom end of the sliding rod 14 is fixedly connected with a pressing plate 15, the pressing plate 15 is slidingly connected in the inside of the clamping cover 8, the top end of the pressing plate 15 is provided with an air hole, and the support spring 16 is fixedly connected between the side rod 13 and the sliding rod 14. The purpose of this setting is that the pressing plate 15 has the effect of extruding and fixing the filter core 10, preventing the vibration generated by the vacuum pump 3 during the working process from affecting the filtering effect of the filter core 10 on the oil mist.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the utility model, and all should be covered in the scope of the claims of the utility model.

Claims

1. A filter structure for a vacuum drying oven, characterized in that, The system includes a vacuum drying oven body (1), a suction tube (2) fixedly connected to the side end of the vacuum drying oven body (1), a vacuum pump (3) fixedly connected to one end of the suction tube (2), an oil mist tube (4) fixedly connected to the top end of the vacuum pump (3), a filter assembly (5) provided at the top end of the oil mist tube (4), the filter assembly (5) including a connecting tube (501) snapped onto the top end of the oil mist tube (4), a filter (502) fixedly connected to the top end of the connecting tube (501), and the filter (502) A clamping plate (503) is snapped onto the bottom side of the inner wall of the filter (502). A smoke guide (504) is fixedly connected inside the connecting pipe (501). A conduit (505) is fixedly connected to the top of the smoke guide (504). The conduit (505) is connected to the clamping plate (503). A filter chamber (506) is opened inside the filter (502). A dust collector bag (507) is provided inside the filter chamber (506). The dust collector bag (507) is fixedly connected to the clamping plate (503).

2. The filter structure of a vacuum drying oven according to claim 1, characterized in that, The top of the card plate (503) is provided with a through hole, the inner radius of the connecting pipe (501) is larger than the outer radius of the conduit (505), a ash cavity is provided between the connecting pipe (501) and the conduit (505), and the bottom side of the inner cavity of the filter (502) is inclined.

3. The filter structure of a vacuum drying oven according to claim 1, characterized in that, The filter assembly (5) also includes dust removal ports (508) symmetrically opened at the outer end of the connecting pipe (501), the dust removal ports (508) are connected to the ash chamber, the inner cavity of the conduit (505) is fixedly connected to a retaining ring (509), the inside of the retaining ring (509) is rotatably connected to a shielding plate (5010), and a torsion spring is fixedly connected between the retaining ring (509) and the shielding plate (5010).

4. The filter structure of a vacuum drying oven according to claim 3, characterized in that, The filter assembly (5) also includes a dust collection hopper (5011) snapped onto the outer end of the connecting pipe (501). The dust collection hopper (5011) corresponds to the position of the dust removal port (508), and the cross-section of the dust collection hopper (5011) is in the shape of an inverted funnel.

5. The filter structure of a vacuum drying oven according to claim 1, characterized in that, The filter (502) has a connecting plate (6) fixedly connected to its inner wall. The filter (502) has a smoke chamber (7) inside. The top of the filter (502) is fitted with a cover (8). The top of the cover (8) is fixedly connected to a pipe (9) and they are connected. The smoke chamber (7) has a filter element (10) fitted inside. The connecting plate (6) is connected to the filter element (10).

6. The filter structure of a vacuum drying oven according to claim 1, characterized in that, A sealing ring (11) is snapped between the extraction tube (2) and the connecting tube (501), and a fixing clip (12) is snapped between the extraction tube (2) and the connecting tube (501).

7. The filter structure of a vacuum drying oven according to claim 5, characterized in that, The inner wall of the cover (8) is fixedly connected to a side rod (13), and a slide rod (14) is slidably connected inside the side rod (13). A pressure plate (15) is fixedly connected to the bottom end of the slide rod (14), and the pressure plate (15) is slidably connected inside the cover (8).

8. The filter structure of a vacuum drying oven according to claim 7, characterized in that, The pressure plate (15) has an air hole at its top, and a support spring (16) is fixedly connected between the side rod (13) and the slide rod (14).

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