CN219640556U - Efficient drying oven - Google Patents

Abstract

The utility model relates to an efficient drying oven which comprises a shell, a top cover for sealing the shell, a placing body for placing a medium, a drying device for drying the medium, a vibrating device for vibrating the medium and a water vapor collecting device, wherein the top cover is provided with a sealing plate; the inside of the shell is hollow and the top of the shell is open; the top cover is arranged on the shell; the placement body is arranged in the shell; the vibrating end of the vibrating device is propped against the placing body; the collecting device is arranged at the bottom of the inner part of the shell; the drying device is arranged on the top cover; the action end of the drying device faces the inside of the placing body. The hot air circulation box type oven solves the problems that when the hot air circulation box type oven is used, heat generated by a heating pipe cannot be fully utilized, the heat loss speed of the hot air circulation box type oven is high when the hot air circulation box type oven is used, the service efficiency of the hot air circulation box type oven is greatly reduced, and meanwhile, moisture generated during drying cannot be timely discharged and collected, so that the drying effect of the hot air circulation box type oven is not ideal in the aspects of energy conservation and environmental protection.

Description

Efficient drying oven

Technical Field

The utility model relates to the field of ovens, in particular to an efficient drying oven.

Background

In the prior art, the oven is a device for baking articles, the heating system of the traditional oven is usually arranged at the bottom of the oven, the bottom is also provided with a blower, the blower is utilized to supply air to the heating system, and heat is transmitted upwards from the bottom by the heat transfer principle, so that the baking of the articles placed in the oven is realized, the whole circulation system of the hot air circulation oven is totally closed, the heat efficiency of the oven can reach more than 80%, a large amount of energy sources are saved for China, the economic benefit of enterprises is improved, and the heat exchange is carried out with materials through hot air passing through a baking tray.

For example, patent number CN214199520U discloses a hot air circulation box type oven, including oven body, transmission shaft, drive screw, fixing base, mount, connecting plate, telescopic link, mounting panel and backup pad etc. although this hot air circulation box type oven has solved the unable shortcoming of comprehensively drying of present material in the oven, and then improves the quality of material stoving, has reached the purpose that the material is fully evenly dried.

But this hot air circulation box oven is when using, can't carry out make full use of to the heat that the heating pipe produced for this hot air circulation box oven is heat loss fast when using, leads to this hot air circulation box oven's availability factor greatly reduced, and the moisture that produces when drying simultaneously can't timely discharge and collect, makes this hot air circulation box oven's stoving effect and energy-concerving and environment-protective aspect not ideal.

Disclosure of Invention

According to the embodiment of the utility model, by providing the efficient drying oven, the problem that the heat generated by the heating pipe cannot be fully utilized when the hot air circulation box type oven is used in the prior art is solved, so that the heat loss speed of the hot air circulation box type oven is high when the hot air circulation box type oven is used, the service efficiency of the hot air circulation box type oven is greatly reduced, and meanwhile, the moisture generated during drying cannot be timely discharged and collected, so that the drying effect of the hot air circulation box type oven is not ideal in energy conservation and environmental protection.

The technical scheme adopted by the embodiment of the utility model is as follows.

An efficient drying oven comprises a shell, a top cover for sealing the shell, a placing body for placing a medium, a drying device for drying the medium, a vibrating device for vibrating the medium and a water vapor collecting device; the shell is hollow and is open at the top; the top cover is arranged on the shell; the placement body is arranged in the shell; the vibrating end of the vibrating device is propped against the placing body; the collecting device is arranged at the bottom of the inner part of the shell; the drying device is arranged on the top cover; the action end of the drying device faces the inside of the placing body.

The further technical scheme is as follows: the top cover is provided with a containing groove; a first inclined plane is formed on the side wall of the accommodating groove; the water vapor slides along the first inclined surface to flow into the collecting device.

The further technical scheme is as follows: the inside of the placement body is hollow; a ventilation groove is formed in the side wall of the placement body; the ventilation grooves are formed in a plurality of ways along the placement body; a draining tank is arranged at the bottom of the placement body; the bottom of the placement body is provided with a second inclined plane; the second inclined plane is in a middle high and outer bottom shape; a filter layer for preventing the medium from falling off is arranged on the draining tank; the draining groove is provided with a plurality of draining grooves.

The further technical scheme is as follows: the vibration device comprises a rotating rod, a driving device and a cam, wherein the rotating rod is rotatably connected to the shell, the driving device is used for driving the rotating rod to rotate, and the cam is arranged on the rotating rod; the driving device is arranged on the shell; a supporting plate is arranged on the side wall of the placement body; the supporting plates are provided with a plurality of supporting plates; the cams are propped against the two groups of supporting plates; when the cam rotates, the placement body moves up and down.

The further technical scheme is as follows: a sliding groove is formed in the inner side of the shell; the support plate slides in the sliding groove.

The further technical scheme is as follows: a pressing device is arranged on the inner side of the shell; the pressing device comprises a supporting block, a guide rod arranged on the supporting block and an elastic piece propping against the supporting plate; the supporting block is arranged on the inner side wall of the shell; the guide rod penetrates through the supporting plate; the elastic piece is arranged between the supporting plate and the supporting block.

The further technical scheme is as follows: the collecting device comprises a collecting box, a drain pipe arranged at the bottom of the collecting box and a sealing cover for closing the drain pipe; the collecting box is hollow; a third inclined plane is formed at the top of the collecting box; a water inlet is formed in the middle of the third inclined surface; a fourth inclined plane is formed at the bottom of the inside of the collecting box; the drain pipe is arranged in the middle of the fourth inclined plane; the sealing cover is connected with the bottom of the drain pipe in a threaded manner.

One or more technical solutions provided in the embodiments of the present utility model at least have the following technical effects or advantages:

1. owing to adopted the shell to be cylindric, shell inside cavity and open-top, place the body and slide from top to bottom inside the shell, the top of shell is provided with the top cap, the top cap can dismantle the connection on the shell, the holding tank has been seted up to the bottom of top cap, first inclined plane has been seted up to the lateral wall of holding tank, first inclined plane is big end down, drying device sets up on the top of top cap, drying device's stoving end is inside the body of placing towards placing, vibrating device sets up on the shell, vibrating device's vibrating end supports the body of placing, when vibrating device moves, place the body and slide from top to bottom, make drying efficiency higher, the bottom inside the shell is provided with collection device, when placing the body with the medium, place the top cap at the top of shell, start drying device later, dry the medium of placing internal medium, start vibrating device now with the liquid discharge to collection device simultaneously, the medium produces partial vapor after the stoving, vapor rises until adsorbing on the holding tank, then the condensation becomes the drop inside the shell through first inclined plane, then the drop until flowing into collection device, and then realized the liquid that sinks and discharges.

2. Owing to adopted the place body and be cylindricly, the open-top of placing the body, ventilation groove has been seted up along placing the body to the lateral wall of placing the body, the drainage groove has been seted up along placing the body to the ventilation groove, four groups have been seted up to the drainage groove, be provided with the filter layer on the drainage groove, the filter layer prevents that impurity from flowing into the drainage groove, the second inclined plane has been seted up to the inboard bottom of placing the body, the second inclined plane is middle high outside end, after the liquid flows out from the medium, flow into the drainage groove through the second inclined plane, filter water through the filter layer, the hot-blast that drying device blown out circulates through ventilation groove simultaneously, and then realized draining the medium fast.

3. Because adopted rotary rod swivelling joint on the shell, the rotary rod is located the bottom of placing the body, and the shell outside is provided with drive arrangement, drive arrangement's drive end fixed connection is on the rotary rod, is provided with two sets of cams on the rotary rod, is provided with four sets of backup pads on the lateral wall of placing the body, has seted up four sets of sliding grooves on the inside wall of shell, and the backup pad slides from top to bottom in the sliding groove, and the cam supports the diapire of backup pad, is provided with the supporting shoe on the shell inside wall, and the supporting shoe corresponds the backup pad is provided with the guide bar from top to bottom, and the backup pad is worn to locate by the guide bar, and the cover is equipped with the elastic component on the guide bar, and the one end of elastic component supports the backup pad, and the other end of elastic component supports the backup pad, when drive arrangement drive rotary rod rotatory, drives the cam rotation to drive place the body and reciprocate, cause the cam to have the condition not contact when rotatory when the drive arrangement too fast, will place the body push down through the elastic component, make the backup pad laminate the cam all the time, and then realized vibrating the place the body.

4. Because adopted the collection box setting in the inboard bottom of shell, the collection box is cylindric and the lateral wall of collection box is laminated with the inside wall of shell, the third inclined plane has been seted up at the top of collection box, the outside is high in the third inclined plane, the water inlet has been seted up at the top of collection box, when liquid is located the third inclined plane, slide to the water inlet until being located the collection box, the drain pipe sets up in the bottom of collection box, the drain pipe communicates with each other with the collection box, the bottom of drain pipe is provided with the closing cap, the closing cap passes through threaded connection on the drain pipe, the fourth inclined plane has been seted up to the inboard bottom of collection box, the fourth inclined plane is outside height, the inboard end, liquid is discharged to drain pipe department through the fourth inclined plane, and then realized quick discharging liquid.

Drawings

Fig. 1 is a schematic diagram of the internal structure of an oven for efficient drying according to the present utility model.

Fig. 2 is a schematic structural view of a vibration device and a placement body according to the present utility model.

Fig. 3 is a partial enlarged view of a in fig. 1.

In the figure: 1. a housing; 11. a sliding groove; 2. a top cover; 21. a receiving groove; 22. a first inclined surface; 3. a placement body; 31. a ventilation groove; 32. a water draining tank; 33. a second inclined surface; 34. a filter layer; 35. a support plate; 4. a drying device; 5. a vibration device; 51. a rotating rod; 52. a driving device; 53. a cam; 6. a collecting device; 61. a collection box; 611. a third inclined surface; 612. a fourth inclined surface; 62. a drain pipe; 63. a cover; 64. a water inlet; 7. a pressing device; 71. a support block; 72. a guide rod; 73. an elastic member.

Detailed Description

According to the embodiment of the utility model, by providing the efficient drying oven, the problem that the heat generated by the heating pipe cannot be fully utilized when the hot air circulation box type oven is used in the prior art is solved, so that the heat loss speed of the hot air circulation box type oven is high when the hot air circulation box type oven is used, the service efficiency of the hot air circulation box type oven is greatly reduced, and meanwhile, the moisture generated during drying cannot be timely discharged and collected, so that the drying effect of the hot air circulation box type oven is not ideal in energy conservation and environmental protection.

In order to solve the problems, the technical scheme in the embodiment of the utility model has the following general ideas

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic diagram of the internal structure of an oven for efficient drying according to the present utility model. Fig. 2 is a schematic structural view of a vibration device and a placement body according to the present utility model. Fig. 3 is a partial enlarged view of a in fig. 1. Referring to fig. 1, 2 and 3, the utility model discloses an efficient drying oven.

An efficient drying oven comprises a shell 1, a top cover 2 for sealing the shell 1, a placing body 3 for placing media, a drying device 4 for drying the media, a vibrating device 5 for vibrating the media and a collecting vapor collecting device 6; the inside of the shell 1 is hollow and the top is open; the top cover 2 is arranged on the shell 1; the placement body 3 is arranged in the shell 1; the vibrating end of the vibrating device 5 is propped against the placing body 3; the collecting device 6 is arranged at the bottom of the inside of the shell 1; the drying device 4 is arranged on the top cover 2; the active end of the drying device 4 faces the inside of the placing body 3.

The top cover 2 is provided with a containing groove 21; a first inclined plane 22 is formed on the side wall of the accommodating groove 21; the water vapor slides along the first inclined surface 22 into the collecting device 6.

The shell 1 is cylindric, shell 1 inside cavity and open-top, place body 3 slides from top to bottom inside shell 1, the top of shell 1 is provided with top cap 2, top cap 2 detachable connection is on shell 1, holding tank 21 has been seted up to the bottom of top cap 2, first inclined plane 22 has been seted up to the lateral wall of holding tank 21, first inclined plane 22 is big-end-up, drying device 4 sets up at the top of top cap 2, drying device 4's stoving end is inside place body 3 towards, vibrating device 5 sets up on shell 1, vibrating device 5's vibrating end supports place body 3, when vibrating device 5 moves, place body 3 slides from top to bottom for drying efficiency is higher, the inside bottom of shell 1 is provided with collection device 6, when placing body 3 with the medium, place top cap 2 at the top of shell 1, then start drying device 4, dry the medium in place body 3, start vibrating device 5 now discharges the liquid of medium to collection device 6, the partial vapor that produces after the stoving, the water lifts up until adsorbing on holding tank 21, then sink into water droplet through first inclined plane 22, then drip into inside the collection device 1.

Owing to adopted shell 1 to be cylindric, shell 1 inside cavity and open-top, place body 3 slide from top to bottom inside shell 1, the top of shell 1 is provided with top cap 2, top cap 2 can dismantle the connection on shell 1, holding tank 21 has been seted up to the bottom of top cap 2, first inclined plane 22 has been seted up to the lateral wall of holding tank 21, first inclined plane 22 is big-end-down, drying device 4 sets up at the top of top cap 2, drying device 4's stoving end is inside towards placing body 3, vibrating device 5 sets up on shell 1, vibrating device 5's vibrating end supports and places body 3, when vibrating device 5 moves, place body 3 slides from top to bottom for drying efficiency is higher, the bottom of shell 1 inside is provided with collection device 6, when placing body 3 with the medium, place top cap 2 at the top of shell 1, then start drying device 4, dry the medium in placing body 3, start vibrating device 5 simultaneously and discharge the liquid of medium to collection device 6, the medium produces partial water, vapor rises until adsorbing on holding tank 21, then slide through first inclined plane to 1, and then the water vapor is condensed and the water vapor is recovered.

The inside of the placement body 3 is hollow; the side wall of the placing body 3 is provided with a ventilation groove 31; the ventilation grooves 31 are formed along the placement body 3; a draining tank 32 is arranged at the bottom of the placement body 3; the bottom of the placement body 3 is provided with a second inclined plane 33; the second inclined plane 33 is in a middle high and outer bottom shape; the draining tank 32 is provided with a filter layer 34 for preventing the medium from falling off; the drain tank 32 is provided with a plurality of.

Place body 3 and be cylindric, place the open-top of body 3, ventilation groove 31 has been seted up to the lateral wall of placing body 3, ventilation groove 31 has seted up a plurality of along placing body 3, drip groove 32 has been seted up to the bottom of standing groove, four sets of drips groove 32 are provided with filter layer 34 on the drip groove 32, filter layer 34 prevents that impurity from flowing into drip groove 32, the inboard bottom of placing body 3 has been seted up second inclined plane 33, high outside end in the middle of second inclined plane 33 is, after the medium flows out, flow into drip groove 32 through second inclined plane 33, filter water through filter layer 34, the hot-blast circulation through ventilation groove 31 that drying device 4 blown out simultaneously.

Owing to adopted to place the body 3 and be cylindric, the open-top of placing the body 3, ventilation groove 31 has been seted up to the lateral wall of placing the body 3, ventilation groove 31 has been seted up a plurality of along placing the body 3, the drip groove 32 has been seted up to the bottom of standing the groove, four groups have been seted up to the drip groove 32, be provided with filter layer 34 on the drip groove 32, filter layer 34 prevents that impurity from flowing into drip groove 32, the second inclined plane 33 has been seted up to the inboard bottom of placing the body 3, the second inclined plane 33 is middle high outside end, after the medium flows out, flow into drip groove 32 through second inclined plane 33, filter water through filter layer 34, the hot-blast circulation through ventilation groove 31 that drying device 4 blown out simultaneously, and then realized draining the medium fast.

The vibration device 5 includes a rotating rod 51 rotatably connected to the housing 1, a driving device 52 that drives the rotating rod 51 to rotate, and a cam 53 provided on the rotating rod 51; the driving device 52 is provided on the housing 1; the side wall of the placing body 3 is provided with a supporting plate 35; the support plate 35 is provided with a plurality of; cam 53 bears against two sets of support plates 35; when the cam 53 rotates, the placement body 3 moves up and down.

The inner side of the shell 1 is provided with a sliding groove 11; the support plate 35 slides in the slide groove 11.

The inner side of the shell 1 is provided with a pressing device 7; the pressing device 7 comprises a supporting block 71, a guide rod 72 arranged on the supporting block 71 and an elastic piece 73 propping against the supporting plate 35; the support block 71 is provided on the inner side wall of the housing 1; the guide rod 72 penetrates the support plate 35; the elastic member 73 is disposed between the support plate 35 and the support block 71.

The rotary rod 51 is rotatably connected to the shell 1, the rotary rod 51 is located at the bottom of the placement body 3, a driving device 52 is arranged on the outer side of the shell 1, the driving end of the driving device 52 is fixedly connected to the rotary rod 51, two groups of cams 53 are arranged on the rotary rod 51, four groups of support plates 35 are arranged on the side wall of the placement body 3, four groups of sliding grooves 11 are formed in the inner side wall of the shell 1, the support plates 35 slide up and down in the sliding grooves 11, the cams 53 abut against the bottom wall of the support plates 35, support blocks 71 are arranged on the inner side wall of the shell 1, the support blocks 71 correspond to the support plates 35, guide rods 72 are arranged up and down, the guide rods 72 penetrate through the support plates 35, elastic pieces 73 are sleeved on the guide rods 72, one ends of the elastic pieces 73 abut against the support plates 35, and the other ends of the elastic pieces 73 abut against the support blocks 71, when the driving device 52 drives the rotary rod 51 to rotate, the cams 53 are driven to rotate, so that the placement body 3 is driven to move up and down, when the driving device 52 rotates, the cams 53 are caused to rotate, and sometimes do not contact with the support plates 35, the cams 3 are pressed down through the elastic pieces 73, and the support plates 35 always fit the cams 53.

Because the rotary rod 51 is rotatably connected to the housing 1, the rotary rod 51 is located at the bottom of the placement body 3, the driving device 52 is arranged on the outer side of the housing 1, the driving end of the driving device 52 is fixedly connected to the rotary rod 51, two groups of cams 53 are arranged on the rotary rod 51, four groups of support plates 35 are arranged on the side wall of the placement body 3, four groups of sliding grooves 11 are formed in the inner side wall of the housing 1, the support plates 35 slide up and down in the sliding grooves 11, the cams 53 abut against the bottom wall of the support plates 35, support blocks 71 are arranged on the inner side wall of the housing 1, the support blocks 71 correspond to the support plates 35, guide rods 72 are arranged on the support blocks 71 up and down, the guide rods 72 penetrate through the support plates 35, elastic pieces 73 are sleeved on the guide rods 72, one ends of the elastic pieces 73 abut against the support plates 35, and the other ends of the elastic pieces 73 abut against the support blocks 71, when the driving device 52 drives the rotary rod 51 to rotate, the cams 53 are driven to rotate, so that the placement body 3 is driven to move up and down, when the driving device 52 is too fast, the cams 53 are caused to rotate, and sometimes do not contact with the support plates 35, the placement body 3 is pressed down, and the support plates 35 are always attached to the support plates 35, so that the support plates are always attached to the support plates 53, and vibration is realized.

The collecting device 6 includes a collecting box 61, a drain pipe 62 provided at the bottom of the collecting box 61, and a cover 63 closing the drain pipe 62; the inside of the collection box 61 is hollow; a third inclined surface 611 is formed at the top of the collecting box 61; a water inlet 64 is formed in the middle of the third inclined surface 611; a fourth inclined surface 612 is formed at the bottom of the inside of the collecting box 61; the drain pipe 62 is disposed in the middle of the fourth incline 612; a cover 63 is screwed to the bottom of the drain pipe 62.

The collection box 61 sets up in the inboard bottom of shell 1, the collection box 61 is cylindric and the lateral wall of collection box 61 is laminated with the inside wall of shell 1, third inclined plane 611 has been seted up at the top of collection box 61, third inclined plane 611 is the outside height, the water inlet 64 has been seted up at the top of collection box 61, when liquid is located third inclined plane 611, slide to water inlet 64 until being located collection box 61, drain pipe 62 sets up the bottom at collection box 61, drain pipe 62 communicates with each other with collection box 61, the bottom of drain pipe 62 is provided with closing cap 63, closing cap 63 passes through threaded connection on drain pipe 62, fourth inclined plane 612 has been seted up at the inboard bottom of collection box 61, fourth inclined plane 612 is the outside height, the inboard end, liquid is discharged to drain pipe 62 department through fourth inclined plane 612.

Because the collection box 61 is arranged at the bottom of the inner side of the shell 1, the collection box 61 is cylindrical, the side wall of the collection box 61 is attached to the inner side wall of the shell 1, the top of the collection box 61 is provided with a third inclined surface 611, the third inclined surface 611 is high on the outer side and is low on the inner side, the top of the collection box 61 is provided with a water inlet 64, when liquid is positioned on the third inclined surface 611, the liquid slides to the water inlet 64 until the liquid is positioned in the collection box 61, a drain pipe 62 is arranged at the bottom of the collection box 61, the drain pipe 62 is communicated with the collection box 61, the bottom of the drain pipe 62 is provided with a sealing cover 63, the sealing cover 63 is connected to the drain pipe 62 through threads, the bottom of the inner side of the collection box 61 is provided with a fourth inclined surface 612, the fourth inclined surface 612 is high on the outer side and is low on the inner side, and the liquid is discharged to the drain pipe 62 through the fourth inclined surface 612, so that the liquid is rapidly discharged.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (7)

1. The efficient drying oven is characterized by comprising a shell (1), a top cover (2) for sealing the shell (1), a placing body (3) for placing a medium, a drying device (4) for drying the medium, a vibrating device (5) for vibrating the medium and a water vapor collecting device (6); the shell (1) is hollow in the interior and is open at the top; the top cover (2) is arranged on the shell (1); the placement body (3) is arranged in the shell (1); the vibrating end of the vibrating device (5) is propped against the placing body (3); the collecting device (6) is arranged at the bottom of the inside of the shell (1); the drying device (4) is arranged on the top cover (2); the acting end of the drying device (4) faces the inside of the placing body (3).

2. The efficient drying oven according to claim 1, characterized in that the top cover (2) is provided with a containing groove (21); a first inclined plane (22) is formed on the side wall of the accommodating groove (21); the water vapor flows into the collecting device (6) along the first inclined surface (22) in a sliding way.

3. An efficient drying oven according to claim 1, characterized in that the rest body (3) is hollow inside; a ventilation groove (31) is formed in the side wall of the placement body (3); the ventilation grooves (31) are formed along the placement body (3); a water draining tank (32) is arranged at the bottom of the placement body (3); the bottom of the placement body (3) is provided with a second inclined plane (33); the second inclined plane (33) is in a middle high and outer bottom shape; a filter layer (34) for preventing the medium from falling off is arranged on the draining groove (32); the draining groove (32) is provided with a plurality of draining grooves.

4. An oven for efficient drying according to claim 1, characterized in that the vibration means (5) comprise a rotary rod (51) rotatably connected to the casing (1), driving means (52) for driving the rotary rod (51) in rotation and a cam (53) provided on the rotary rod (51); the driving device (52) is arranged on the shell (1); a supporting plate (35) is arranged on the side wall of the placement body (3); the supporting plate (35) is provided with a plurality of supporting plates; the cams (53) are abutted against two groups of the supporting plates (35); when the cam (53) rotates, the placement body (3) moves up and down.

5. The efficient drying oven according to claim 4, characterized in that the inside of the outer shell (1) is provided with a sliding groove (11); the support plate (35) slides in the sliding groove (11).

6. An efficient drying oven according to claim 4, characterized in that the inside of the casing (1) is provided with a pressing device (7); the pressing device (7) comprises a supporting block (71), a guide rod (72) arranged on the supporting block (71) and an elastic piece (73) propping against the supporting plate (35); the supporting block (71) is arranged on the inner side wall of the shell (1); the guide rod (72) penetrates through the supporting plate (35); the elastic member (73) is provided between the support plate (35) and the support block (71).

7. An efficient drying oven according to claim 1, characterized in that the collecting device (6) comprises a collecting box (61), a drain pipe (62) arranged at the bottom of the collecting box (61) and a cover (63) closing the drain pipe (62); the collecting box (61) is hollow; a third inclined surface (611) is formed at the top of the collecting box (61); a water inlet (64) is formed in the middle of the third inclined plane (611); a fourth inclined plane (612) is formed at the bottom of the inner part of the collecting box (61); the drain pipe (62) is arranged in the middle of the fourth inclined plane (612); the sealing cover (63) is connected to the bottom of the drain pipe (62) in a threaded mode.