CN210661487U - Dry plate combined air suction change-over valve - Google Patents

Abstract

The utility model discloses a suction changeover valve of a dry plate combination, which comprises a suction box with a first air inlet and a second air inlet, a turnover plate rotationally arranged on the suction box and used for selectively sealing the first air inlet and the second air inlet, a turnover driving component used for driving the turnover plate to rotate, and a main suction pipe communicated with the first air inlet; one end of the main exhaust pipe, which is far away from the first air inlet, is communicated with the dry plate combination; the air exhaust box is also provided with an air outlet which is communicated with the central air exhaust main pipe. When the dry plate combination is shut down, the turnover driving assembly drives the turnover plate to rotate, so that the turnover plate is free from sealing the second air inlet and further seals the first air inlet, at the moment, the central air exhaust main pipe cannot exhaust the main exhaust pipe through the air exhaust box, but the air in the environment is extracted through the second air inlet on the air exhaust box, the air in the dry plate combination cannot be exhausted, and the inner cavity of the dry plate combination is prevented from becoming negative pressure.

Description

Dry plate combined air suction change-over valve

Technical Field

The utility model relates to a printed circuit board processing field especially relates to a change-over valve of bleeding of dry plate combination.

Background

In the PCB (printed circuit board) industry, the liquid medicine module and the drying module of each wet processing flow are both provided with an air suction pipeline, and the drying module is generally formed by combining a strong air blow-drying part and a drying part (a dry plate combination), wherein the dry plate combination is provided with an air source by an air blower and is supplied to an air knife after being finely filtered. When the air knife blows the PCB containing water, a large amount of moist gas is generated in the inner cavity of the dry plate combination, the moist gas needs to be pumped out in time to avoid influencing the drying effect, the air pumping routine design of the section is that the dry plate combination air pumping pipe is directly connected with the central air pumping main pipe, when the partial unit stops the fan, the air suction of the central air suction main pipe cannot be closed in order to keep the other units working normally (in order to avoid frequent startup and shutdown), and the inner cavity of the dry plate combination becomes negative pressure, so that air in the workshop environment enters the dry plate combination, the environmental air contains more dust and possibly corrosive gas, and the dust and the corrosive gas enter the inner cavity of the dry plate combination, the dust particles in the inner cavity are abundant, the cavity/parts made of the stainless steel materials are rusted, the cleanliness of the PCB can be seriously affected, the hidden quality trouble is generated, and the service life of the dry plate combination can be shortened due to the fact that the stainless steel materials are corroded and rusted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a change-over valve of bleeding of board combination futilely aims at solving prior art, forms the negative pressure easily and leads to the problem in the air admission board combination of environment when board combination shuts down futilely.

To achieve the purpose, the utility model adopts the following technical proposal:

the air suction conversion valve of the dry plate combination comprises an air suction box with a first air inlet and a second air inlet, a turnover plate which is rotatably arranged on the air suction box and is used for selectively sealing the first air inlet and the second air inlet, a turnover driving component used for driving the turnover plate to rotate, and a main air suction pipe communicated with the first air inlet; one end of the main exhaust pipe, which is far away from the first air inlet, is communicated with the dry plate combination; the air pumping box is also provided with an air outlet which is communicated with the central air pumping main pipe.

Furthermore, the overturning driving assembly comprises an overturning shaft which is rotatably arranged on the air extracting box and is fixedly connected with the overturning plate, a first connecting piece which is fixedly connected with the overturning shaft, a second connecting piece which is rotatably connected with the first connecting piece, and an overturning air cylinder which is rotatably arranged on the air extracting box; and one end of the second connecting piece, which is far away from the first connecting piece, is connected with the output end of the turnover cylinder.

Furthermore, a rotating seat is arranged on the air pumping box and comprises two rotating support plates which are opposite and arranged at intervals; a rotating block is arranged on the overturning cylinder, the rotating block is inserted into a gap between the two rotating support plates, a first rotating shaft is arranged between the rotating block and the rotating seat, and the first rotating shaft penetrates through the two rotating support plates and the rotating block; the rotating block is rotatably connected with the rotating seat through the first rotating shaft.

Furthermore, the first connecting piece and the turnover shaft are perpendicular to each other, a fixing screw is arranged between the first connecting piece and the turnover shaft, and the first connecting piece is fixedly connected with the turnover shaft through the fixing screw.

Furthermore, a connecting gap is formed in the second connecting piece, and one end, far away from the turnover shaft, of the first connecting piece is inserted into the connecting gap; a second rotating shaft is arranged between the first connecting piece and the second connecting piece; the second rotating shaft penetrates through the first connecting piece and the second connecting piece; the first connecting piece is rotatably connected with the second connecting piece through the second rotating shaft.

Furthermore, the overturning driving assembly comprises an overturning shaft, a driven gear, an overturning motor and a driving gear, wherein the overturning shaft is rotatably installed on the air pumping box and is fixedly connected with the overturning plate, the driven gear is fixedly installed on the overturning shaft, the overturning motor is fixedly installed on the air pumping box, and the driving gear is fixedly installed on an output shaft of the overturning motor and is meshed with the driven gear.

Furthermore, the first connecting pipe is arranged at the first air inlet of the air pumping box, and a first connecting flange used for being connected with the main air pumping pipe is arranged at one end, far away from the first air inlet, of the first connecting pipe.

Furthermore, the air exhaust box is provided with a second connecting pipe at the air outlet, and one end of the second connecting pipe, which is far away from the air outlet, is provided with a second connecting flange which is used for being connected with the central air exhaust main pipe.

Furthermore, sealing components are arranged on two opposite sides of the turnover plate; the sealing assembly comprises a sealing connecting plate connected with the turnover plate, a sealing flexible plate far away from one side of the turnover plate, and a sealing pressing plate far away from one side of the sealing connecting plate.

Furthermore, a transverse long pipe is further arranged at one end, far away from the first air inlet, of the main exhaust pipe; the transverse long pipe is perpendicular to the main exhaust pipe, and a plurality of branch exhaust pipes connected with the dry plate combination are arranged along the length direction of the transverse long pipe.

The utility model has the advantages that: when the dry plate combination is shut down, the turnover driving assembly drives the turnover plate to rotate, so that the turnover plate is free from sealing the second air inlet and further seals the first air inlet, at the moment, the central air exhaust main pipe cannot exhaust the main exhaust pipe through the air exhaust box, but the air in the environment is extracted through the second air inlet on the air exhaust box, namely, the air in the dry plate combination cannot be exhausted, the inner cavity of the dry plate combination is prevented from becoming negative pressure, and finally the air in the workshop environment is prevented from entering the dry plate combination.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of an air suction switching valve of a dry plate combination according to an embodiment of the present invention;

fig. 2 is a top view of an evacuation box in an embodiment of the invention;

FIG. 3 is a front view of the pumping box with the flap closing the second inlet in an embodiment of the present invention;

fig. 4 is a front view of the air pumping box when the turning plate closes the first air inlet in the embodiment of the present invention;

in the figure:

1. an air pumping box; 11. a first air inlet; 12. a second air inlet; 13. a turnover plate; 14. an air outlet; 15. a first connecting pipe; 16. a first connecting flange; 17. a second connecting pipe; 18. a second connecting flange;

2. a turnover drive assembly; 21. a turning shaft; 22. a first connecting member; 23. a second connecting member; 231. a connecting gap; 24. turning over the air cylinder; 25. a rotating seat; 251. rotating the support plate; 26. a first rotating shaft; 27. a set screw; 28. a second rotating shaft;

3. a main exhaust pipe; 4. a transverse long tube;

5. a seal assembly; 51. sealing the connecting plate; 52. sealing the flexible plate; 53. sealing the pressure plate;

6. and a branch exhaust pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

As shown in fig. 1-4, an embodiment of the present invention provides a suction changeover valve of a dry plate combination, which includes a suction box 1 having a first air inlet 11 and a second air inlet 12, a flap 13 rotatably mounted on the suction box 1 and used for selectively closing the first air inlet 11 and the second air inlet 12, a flap driving assembly 2 used for driving the flap 13 to rotate, and a main suction pipe 3 communicated with the first air inlet 11; one end of the main exhaust pipe 3, which is far away from the first air inlet 11, is communicated with the dry plate combination; the air pumping box 1 is also provided with an air outlet 14, and the air outlet 14 is communicated with the central air pumping main pipe.

In the embodiment of the present invention, when the dry plate combination works, the flap 13 closes the second air inlet 12 (at this time, the first air inlet 11 communicated with the main exhaust pipe 3 is in a conducting state), so that the central exhaust main performs air exhaust on the main exhaust pipe 3 through the main exhaust box 1, and the wet gas in the dry plate combination reaches the main exhaust pipe 3 and then reaches the central exhaust box 1; when the dry plate combination is shut down, the turnover driving component 2 drives the turnover plate 13 to rotate, so that the turnover plate 13 is free from sealing the second air inlet 12 and further seals the first air inlet 11, at the moment, the central air exhaust main pipe cannot exhaust the main exhaust pipe 3 through the air exhaust box 1, but the air in the environment is extracted through the second air inlet 12 on the air exhaust box 1, the air in the dry plate combination cannot be exhausted, the inner cavity of the dry plate combination is prevented from becoming negative pressure, and finally the air in the workshop environment is prevented from entering the dry plate combination. More dust and corrosive gas contained in the ambient air are prevented from entering the inner cavity of the dry plate combination, and further, more dust particles in the inner cavity and rusting of the cavity/parts made of stainless steel materials are avoided; quality hidden trouble caused by the cleanliness of the PCB cannot be influenced, and the service life of the dry plate combination cannot be shortened.

Further, please refer to fig. 2, as another specific embodiment of the air suction switching valve of the dry plate combination provided by the present invention, the turnover driving assembly 2 includes a turnover shaft 21 rotatably installed on the air suction box 1 and fixedly connected to the turnover plate 13, a first connecting member 22 fixedly connected to the turnover shaft 21, a second connecting member 23 rotatably connected to the first connecting member 22, and a turnover cylinder 24 rotatably installed on the air suction box 1; the end of the second connector 23 remote from the first connector 22 is connected to the output of the tumble cylinder 24. Of course, in other embodiments, the turning shaft 21 can be directly driven to rotate by the rotary cylinder, so as to drive the turning plate 13 to rotate.

Further, referring to fig. 2, as another specific embodiment of the air suction switching valve of the dry plate combination provided by the present invention, a rotating seat 25 is provided on the air suction box 1, and the rotating seat 25 includes two rotating support plates 251 which are arranged oppositely and at an interval; a rotating block is arranged on the overturning cylinder 24, the rotating block is inserted in a gap between the two rotating support plates 251, a first rotating shaft 26 is arranged between the rotating block and the rotating seat 25, and the first rotating shaft 26 penetrates through the two rotating support plates 251 and the rotating block; the rotating block is rotatably connected with the rotating seat 25 through a first rotating shaft 26.

Further, please refer to fig. 2, as another specific embodiment of the air suction switching valve of the dry plate combination of the present invention, the first connecting member 22 is perpendicular to the turning shaft 21, a fixing screw 27 is disposed between the first connecting member 22 and the turning shaft 21, and the first connecting member 22 is fixedly connected to the turning shaft 21 through the fixing screw 27.

Further, referring to fig. 2, as another specific embodiment of the air suction switching valve of the dry plate combination of the present invention, a connection notch 231 is formed on the second connecting member 23, and one end of the first connecting member 22 away from the turning shaft 21 is inserted into the connection notch 231; a second rotating shaft 28 is arranged between the first connecting piece 22 and the second connecting piece 23; the second rotating shaft 28 penetrates through the first connecting piece 22 and the second connecting piece 23; the first connecting member 22 is rotatably connected to the second connecting member 23 by a second rotating shaft 28.

Further, as the utility model provides a another kind of embodiment of the change-over valve of bleeding of dry plate combination, upset drive assembly 2 is installed including rotating in the box of bleeding 1 and with 13 fixed connection's trip shaft 21, fixed mounting in the driven gear of trip shaft 21, fixed mounting in the upset motor of the box of bleeding 1 to and fixed mounting in the output shaft of upset motor and with driven gear engaged with driving gear. That is, the turnover motor drives the turnover shaft 21 to rotate through the matching of the driving gear and the driven gear.

Further, please refer to fig. 2-3, as the utility model provides a another kind of embodiment of the change-over valve that bleeds of dry plate combination, the box 1 that bleeds is equipped with first connecting pipe 15 in first air inlet 11 department, and the one end that first air inlet 11 was kept away from to first connecting pipe 15 is equipped with and is used for the first flange 16 that links to each other with main exhaust tube 3, and first flange 16 can realize the quick firm connection with main exhaust tube 3, promotes the steadiness of assembly and the convenience of overhauing.

Further, please refer to fig. 2-3, as the utility model provides a another kind of embodiment of the change-over valve of bleeding of dry plate combination, the box 1 of bleeding is equipped with second connecting pipe 17 in gas outlet 14 department, and the one end that gas outlet 14 was kept away from to second connecting pipe 17 is equipped with and is used for bleeding the second flange 18 that is responsible for linking to each other with central authorities, and second flange 18 can realize bleeding the quick firm connection of being responsible for with central authorities, promotes the steadiness of assembly and the convenience of overhauing.

Further, referring to fig. 3, as another specific embodiment of the air suction and conversion valve of the dry plate combination of the present invention, the two opposite sides of the turnover plate 13 are both provided with the sealing assemblies 5; the sealing assembly 5 comprises a sealing web 51 connected to the flipping panel 13, a sealing flexible panel 52 connected to a side of the sealing web 51 remote from the flipping panel 13, and a sealing platen 53 connected to a side of the sealing flexible panel 52 remote from the sealing web 51. The sealing components 5 on two opposite sides of the turnover plate 13 are respectively used for sealing the first air inlet 11 and the second air inlet 12; so as to realize the effect of sealing the first air inlet 11 and the second air inlet 12, so as to prevent the air in the dry plate combination from being sucked into the air suction box 1 from the first air inlet 11 when the first air inlet 11 is sealed by the turnover plate 13, and to prevent the negative pressure from being formed in the dry plate combination to the maximum extent.

Further, referring to fig. 1, as another specific embodiment of the air extraction and conversion valve of the dry plate combination provided by the present invention, a transverse long tube 4 is further disposed at one end of the main air extraction tube 3 away from the first air inlet 11; the transverse long pipe 4 is perpendicular to the main exhaust pipe 3, and a plurality of branch exhaust pipes 6 connected with the dry plate combination are arranged along the length direction of the transverse long pipe 4. A plurality of branch exhaust pipes 6 connected with the dry plate combination are arranged along the length direction of the transverse long pipe 4, and the branch exhaust pipes 6 can be communicated with the same dry plate combination, so that humid air at different positions in the dry plate combination can be exhausted, and a better air exhaust effect can be realized; of course, the branch exhaust pipes 6 can be respectively communicated with different dry plate combinations to realize the simultaneous exhaust of the plurality of dry plate combinations.

It is to be understood that aspects of the present invention may be practiced otherwise than as specifically described.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The air suction conversion valve of the dry plate combination is characterized by comprising an air suction box with a first air inlet and a second air inlet, a turnover plate which is rotatably arranged on the air suction box and is used for selectively sealing the first air inlet and the second air inlet, a turnover driving component used for driving the turnover plate to rotate, and a main air suction pipe communicated with the first air inlet; one end of the main exhaust pipe, which is far away from the first air inlet, is communicated with the dry plate combination; the air pumping box is also provided with an air outlet which is communicated with the central air pumping main pipe.

2. The dry plate combination suction changeover valve according to claim 1, wherein the turnover drive assembly comprises a turnover shaft rotatably mounted to the suction box and fixedly connected to the turnover plate, a first connecting member fixedly connected to the turnover shaft, a second connecting member rotatably connected to the first connecting member, and a turnover cylinder rotatably mounted to the suction box; and one end of the second connecting piece, which is far away from the first connecting piece, is connected with the output end of the turnover cylinder.

3. The dry plate combination suction changeover valve according to claim 2, wherein the suction box is provided with a rotary seat comprising two rotary support plates arranged oppositely and at an interval; a rotating block is arranged on the overturning cylinder, the rotating block is inserted into a gap between the two rotating support plates, a first rotating shaft is arranged between the rotating block and the rotating seat, and the first rotating shaft penetrates through the two rotating support plates and the rotating block; the rotating block is rotatably connected with the rotating seat through the first rotating shaft.

4. The dry plate combination suction changeover valve according to claim 2, wherein the first connecting member is perpendicular to the turning shaft, a fixing screw is provided between the first connecting member and the turning shaft, and the first connecting member is fixedly connected to the turning shaft by the fixing screw.

5. The air suction changeover valve of the dry plate combination according to claim 2, wherein the second connecting member is provided with a connecting notch, and one end of the first connecting member, which is far away from the trip shaft, is inserted into the connecting notch; a second rotating shaft is arranged between the first connecting piece and the second connecting piece; the second rotating shaft penetrates through the first connecting piece and the second connecting piece; the first connecting piece is rotatably connected with the second connecting piece through the second rotating shaft.

6. The dry plate combination suction changeover valve according to claim 1, wherein the turnover drive assembly comprises a turnover shaft rotatably mounted to the suction box and fixedly connected to the turnover plate, a driven gear fixedly mounted to the turnover shaft, a turnover motor fixedly mounted to the suction box, and a driving gear fixedly mounted to an output shaft of the turnover motor and engaged with the driven gear.

7. The dry plate combination suction changeover valve according to claim 1, wherein the suction box is provided with a first connection pipe at the first air inlet, and an end of the first connection pipe remote from the first air inlet is provided with a first connection flange for connection with a main suction pipe.

8. The dry plate combination suction changeover valve according to claim 1, wherein the suction box is provided with a second connecting pipe at the air outlet, and one end of the second connecting pipe remote from the air outlet is provided with a second connecting flange for connecting with a central suction main pipe.

9. The dry plate combination suction changeover valve according to any one of claims 1 to 8, wherein the flap plate is provided with sealing members on opposite sides; the sealing assembly comprises a sealing connecting plate connected with the turnover plate, a sealing flexible plate far away from one side of the turnover plate, and a sealing pressing plate far away from one side of the sealing connecting plate.

10. The dry plate combination suction changeover valve according to any one of claims 1 to 8, wherein the end of the main suction pipe remote from the first air inlet is further provided with a transverse long pipe; the transverse long pipe is perpendicular to the main exhaust pipe, and a plurality of branch exhaust pipes connected with the dry plate combination are arranged along the length direction of the transverse long pipe.

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