CN217450068U

CN217450068U - Continuous powder feeding reaction tank

Info

Publication number: CN217450068U
Application number: CN202221545102.8U
Authority: CN
Inventors: 童忠伏
Original assignee: Wuxi Xinerli Machinery And Equipment Co ltd
Current assignee: Wuxi Xinerli Machinery And Equipment Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-09-20
Anticipated expiration: 2032-06-20

Abstract

The utility model relates to a continuous powder feeding reaction tank, which comprises a reaction tank body, wherein the reaction tank body is driven by a driving mechanism and is rotatably arranged on a frame; the internal portion of retort is interior barrel, and interior barrel is inside to be the reaction chamber, and interior barrel periphery cover is established and is pressed from both sides the cover, forms the accuse temperature chamber between interior barrel and the cover that presss from both sides, installs feeding device in interior barrel and the cover that presss from both sides, and the feeding device middle part is the mixing drum, and the mixing drum side is the charge door, and the charge door installation is with charge lid, and mixing drum upper end installation trachea, trachea upper end are the air inlet, and the part equipartition several of mixing drum is stretched into to the trachea, and the discharging pipe is connected to the mixing drum lower extreme. The utility model has simple structure and small occupied space; the vacuum pumping is convenient, the powder material can not be caked when being filled, the reaction powder material can be recovered, and the reaction temperature can be controlled.

Description

Continuous powder feeding reaction tank

Technical Field

The utility model belongs to the technical field of the retort, a go into powder retort in succession is related to.

Background

The reaction tank has the characteristics of rapid heating, high temperature resistance, corrosion resistance, sanitation, no environmental pollution, no need of automatic heating of a boiler, convenient use and the like, is widely applied to the technical processes of petroleum, chemical engineering, rubber, pesticides, dyes, medicines and foods, is used for completing vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation and the like, takes full mixing of reaction substances as a premise, and can obtain good effect only by adopting a stirring device in the physical change processes of heating, cooling, liquid extraction, gas absorption and the like.

The existing reaction tank has the problems that the powder is easy to agglomerate when being filled, the reaction powder cannot be recovered, and the reaction temperature is uncontrollable.

Disclosure of Invention

An object of the utility model is to provide a go into powder retort in succession, can solve and load the powder and easily agglomerate, the unable recovery of reaction powder, the uncontrollable problem of reaction temperature.

According to the utility model provides a technical scheme: a continuous powder feeding reaction tank comprises a reaction tank body, wherein the reaction tank body is driven by a driving mechanism and is rotatably arranged on a rack; the middle part of the reaction tank body is an inner cylinder body, a reaction cavity is arranged in the inner cylinder body, a jacket is sleeved on the periphery of the inner cylinder body, a temperature control cavity is formed between the inner cylinder body and the jacket, a feeding device is installed in the inner cylinder body and the jacket, a mixing cylinder is arranged in the middle of the feeding device, a feeding port is arranged on the side surface of the mixing cylinder, a feeding cover is installed on the feeding port, an air pipe is installed at the upper end of the mixing cylinder, an air inlet is arranged at the upper end of the air pipe, a plurality of air blowing ports are uniformly distributed on the part, extending into the mixing cylinder, of the air pipe, the lower end of the mixing cylinder is connected with a discharge pipe, the upper end of the discharge pipe extends into the mixing cylinder, a switch valve is installed in the middle of the discharge pipe, and the lower end of the discharge pipe extends into the jacket and the inner cylinder body to communicate with the reaction cavity; the two sides of the jacket are respectively connected with the inner end of a first end shaft and the inner end of a second end shaft, the outer end of the first end shaft is provided with a first rotary joint, the outer end of the second end shaft is provided with a second rotary joint, the reaction cavity is communicated with a vacuum pump through a vacuumizing channel, and the temperature of the temperature control cavity is controlled by a circulating temperature control mechanism.

As the utility model discloses a further improvement, the evacuation passageway is including the first evacuation pore, second evacuation pore, the vacuum tube that communicate in proper order, and first evacuation pore sets up in first rotary joint, and second evacuation pore is located first end axle, and the vacuum tube is located interior barrel and presss from both sides the cover, and the inner intercommunication reaction chamber of vacuum tube installs the filter screen in the vacuum tube, and vacuum pump suction end is connected to first evacuation pore outer end.

As a further improvement of the utility model, the second vacuumizing pore channel is provided with a helical blade.

As a further improvement of the utility model, the circulating temperature control mechanism comprises a circulating channel, the circulating channel is communicated with two sides of the temperature control cavity, the temperature control device and the temperature control drive which are connected are arranged in the circulating channel, and the temperature control cavity, the circulating channel, the temperature control device and the temperature control drive are filled with temperature adjusting media; the circulation channel comprises a first left circulation duct, a second left circulation duct and a left circulation pipe which are sequentially communicated, the first circulation duct is arranged in the first rotary joint, the second circulation duct is positioned in the first end shaft, the other end of the left circulation pipe is communicated with the left end of the temperature control cavity, the outer end of the first circulation duct is a medium left port, and the medium left port is communicated with the temperature control device; the circulation channel comprises a first right circulation pore channel, a second right circulation pore channel and a right circulation pipe which are sequentially communicated, the first circulation pore channel is arranged in the second rotary joint, the second circulation pore channel is positioned in the second end shaft, the other end of the right circulation pipe is communicated with the right end of the temperature control cavity, the outer end of the first circulation pore channel is a medium right port, and the medium right port is communicated with the temperature control drive.

As a further improvement of the utility model, the temperature control device is a mold temperature controller, the temperature control drive is a circulating pump, and the temperature adjusting medium is water or oil.

As a further improvement, the driving mechanism comprises a driven sprocket and a speed reducer, the driven sprocket is installed in the periphery of the second end shaft, the speed reducer and the motor are installed in proper order below the driven sprocket, a driving sprocket is installed on the output shaft of the speed reducer, the driving sprocket passes through a chain to connect the driven sprocket, a driven pulley is installed on the input shaft of the speed reducer, a driving pulley is installed on the output shaft of the motor, and the driving pulley passes through a transmission belt to connect the driven pulley.

As a further improvement, the filter is installed between the vacuum pump and the outer end of the first vacuumizing pore channel, and the filter output end is communicated with the suction end of the vacuum pump.

As a further improvement, the utility model provides a tee joint is set up between vacuum pump and the filter, and the tee joint communicates filter output end, vacuum pump suction end respectively and blows the material air supply.

As the utility model discloses a further improvement, install the vacuum valve between first evacuation pore outer end and the vacuum pump suction end, first evacuation pore outer end and vacuum pump suction end are connected respectively to vacuum valve both ends.

As the utility model discloses a further improvement installs ejection of compact tee bend between vacuum valve and the vacuum pump, and the filter is vertical setting, and the filter input is located filter output below, ejection of compact tee bend upper end intercommunication filter input, the first evacuation pore outer end of ejection of compact tee bend side intercommunication, ejection of compact tee bend lower extreme installation blowing valve.

The positive progress effect of this application lies in:

the utility model has simple structure and small occupied space; the vacuum pumping is convenient, the powder material can not be caked when being filled, the reaction powder material can be recovered, and the reaction temperature can be controlled.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the reaction tank and the driving mechanism of the present invention.

Fig. 3 is a schematic structural diagram of the feeding device of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, "including" and "having," and like terms, mean that "including" and "having," in addition to those already recited in "including" and "having," other content not already recited in the list; for example, a process, method, system, article, or apparatus that may comprise a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus.

In the following description of the embodiment, the coordinates refer to fig. 1, where the direction from the inside of the vertical paper in fig. 1 is taken as the front, the direction from the outside of the vertical paper in fig. 1 is taken as the rear, the left-right direction in fig. 1 is taken as the left-right direction, and the up-down direction in fig. 1 is taken as the up-down direction.

In the figures 1-3, the device comprises a reaction tank body 1, an inner cylinder body 1-1, a jacket 1-2, a feeding device 1-3, a first end shaft 1-4, a second end shaft 1-5, a first rotary joint 1-6, a second rotary joint 1-7, a vacuum pumping pipe 1-8, a first vacuum pumping pore passage 1-9, a filter 2, a vacuum pump 3, a fan 4, a mold temperature controller 5, a circulating pump 6, a frame 8, a tee joint 9, a vacuum-maintaining valve 10 and the like.

As shown in figure 1, the utility model relates to a go into powder retort in succession, including the retort body 1, the retort body 1 is driven by actuating mechanism, rotates and installs in frame 8. As shown in figure 2, the middle part of a reaction tank body 1 is provided with an inner cylinder body 1-1, the interior of the inner cylinder body 1-1 is provided with a reaction cavity, the periphery of the inner cylinder body 1-1 is sleeved with a jacket 1-2, a temperature control cavity is formed between the inner cylinder body 1-1 and the jacket 1-2, a feeding device 1-3 is arranged in the inner cylinder body 1-1 and the jacket 1-2, as shown in figure 3, the middle part of the feeding device 1-3 is provided with a mixing cylinder 1-31, the side surface of the mixing cylinder 1-31 is provided with a feeding port 1-311, a feeding cover is arranged at the feeding port 1-311, the upper end of the mixing cylinder 1-31 is provided with an air pipe 1-32, the upper end of the air pipe 1-32 is provided with an air inlet 1-321 for connecting with an air source, a plurality of air blowing ports 1-322 are uniformly distributed at the part of the air pipe 1-32 extending into the mixing cylinder 1-31, the lower end of the mixing cylinder 1-31 is connected with a discharge pipe 1-33, the upper ends of the discharge pipes 1 to 33 extend into the mixing barrels 1 to 31, the middle parts of the discharge pipes 1 to 33 are provided with switch valves 1 to 34, and the lower ends of the discharge pipes 1 to 33 extend into the jacket 1 to 2 and the inner barrel 1 to communicate with the reaction cavity. The two sides of the jacket 1-2 are respectively connected with the inner ends of a first end shaft 1-4 and the inner ends of a second end shaft 1-5, the outer end of the first end shaft 1-4 is provided with a first rotary joint 1-6, the outer end of the second end shaft 1-5 is provided with a second rotary joint 1-7, the reaction cavity is communicated with a vacuum pump 3 through a vacuumizing channel, and the temperature of the temperature control cavity is controlled by a circulating temperature control mechanism.

Powder enters a mixing cylinder 1-31 from a charging port 1-311, gas enters a gas pipe 1-32 from a gas inlet 1-321 and is discharged to the mixing cylinder 1-31 from a gas blowing port 1-322, the powder is scattered in the mixing cylinder 1-31 by the gas, the scattered powder enters a reaction cavity through a discharge pipe 1-33 and a switch valve 1-34, and the switch valve 1-34 is closed after the powder is filled.

The vacuumizing channel comprises a first vacuumizing hole channel 1-9, a second vacuumizing hole channel 1-15 and a vacuumizing pipe 1-8 which are sequentially communicated, the first vacuumizing hole channel 1-9 is arranged in a first rotating joint 1-6, the second vacuumizing hole channel 1-15 is arranged in a first end shaft 1-4, the vacuumizing pipe 1-8 is arranged in an inner cylinder 1-1 and a jacket 1-2, the inner end of the vacuumizing pipe 1-8 is communicated with a reaction cavity, a filter screen is arranged in the vacuumizing pipe 1-8 to prevent reaction powder from being sucked out, and the outer end of the first vacuumizing hole channel 1-9 is connected with the suction end of a vacuum pump 3.

Helical blades 1-16 are fixedly arranged in the second vacuumizing pore channels 1-15, so that the reaction powder is conveyed conveniently.

The circulating temperature control mechanism comprises a circulating channel, the circulating channel is communicated with two sides of the temperature control cavity, the temperature control device and the temperature control drive which are connected are installed in the circulating channel, and the temperature control cavity, the circulating channel, the temperature control device and the temperature control drive are filled with temperature adjusting media.

The circulation channel comprises a first left circulation duct, a second left circulation duct and a left circulation pipe (not shown), which are sequentially communicated, the first circulation duct is arranged in the first rotary joint 1-6, the second circulation duct 1-14 is positioned in the first end shaft 1-4, the other end of the left circulation pipe is communicated with the left end of the temperature control cavity, the outer end of the first circulation duct is provided with a medium left port 1-11, and the medium left port 1-11 is communicated with the temperature control device. The circulation channel comprises a first right circulation duct, a second right circulation duct and a right circulation pipe (not shown), which are sequentially communicated, the first circulation duct is arranged in the second rotary joint 1-7, the second circulation duct 1-14 is positioned in the second end shaft 1-5, the other end of the right circulation pipe is communicated with the right end of the temperature control cavity, the outer end of the first circulation duct is a medium right port 1-12, and the medium right port 1-12 is communicated with the temperature control drive.

The temperature control device is a mold temperature controller 5, and the temperature control medium is at a proper temperature. The temperature control drive is a circulating pump 6 for providing kinetic energy for the temperature adjusting medium. The temperature regulating medium is water or oil.

The first end shaft 1-5 and the second end shaft 1-5 are rotatably mounted on the frame 8 through a bearing with a seat 1-13.

The driving mechanism comprises a driven sprocket 15 and a speed reducer 22, the driven sprocket 15 is installed on the periphery of the second end shaft 1-5, the speed reducer 22 and a motor 24 are sequentially installed below the driven sprocket 15, a driving sprocket 21 is installed on an output shaft of the speed reducer 22, the driving sprocket 21 is connected with the driven sprocket 15 through a chain, a driven pulley 23 is installed on an input shaft of the speed reducer 22, a driving pulley 25 is installed on an output shaft of the motor 24, and the driving pulley 25 is connected with the driven pulley 23 through a transmission belt. The structure can obtain high torque and drive the reaction tank body 1 with heavy weight to rotate.

The periphery of the inner cylinder 1-1 is connected with the jacket 1-2 through a connecting ring 1-10, and two ends of the connecting ring 1-10 are fixedly connected with the inner cylinder 1-1 and the jacket 1-2.

In order to prevent reaction powder from entering the vacuum pump 3 and being damaged, the filter 2 is additionally arranged at the front end of the vacuum pump 3, the input end of the filter 2 is communicated with the outer ends of the first vacuumizing pore passages 1-9, and the output end of the filter 2 is communicated with the suction end of the vacuum pump 3.

The filter 2 is a vacuum filter with good filtering effect.

In order to return the intercepted reaction powder to the reaction tank 1. A tee joint 9 is arranged between the vacuum pump 3 and the filter 2, and the tee joint 9 is respectively communicated with the output end of the filter 2, the suction end of the vacuum pump 3 and a blowing air source. The blowing gas source can return the reaction powder intercepted in the filter 2 to the reaction cavity through the vacuumizing channel.

In order to maintain the vacuum degree in the reaction cavity after vacuum pumping, a vacuum-maintaining valve 10 is arranged between the outer ends of the first vacuum-pumping pore canals 1-9 and the suction end of the vacuum pump 3, and two ends of the vacuum-maintaining valve 10 are respectively connected with the outer end of the first vacuum-pumping pore canal and the suction end of the vacuum pump 3.

In order to suck the powder away by the combination of the filter 2 and the blower 4 in a state where the vacuum pump 3 is stopped after the reaction is completed. Install ejection of compact tee bend 11 between vacuum valve 10 and vacuum pump 3, filter 2 is vertical setting, and filter 2 input is located filter 2 output below, 11 upper ends of ejection of compact tee bend intercommunication filter 2 input, 11 sides of ejection of compact tee bend intercommunication first evacuation pore outer end, 11 lower extremes of ejection of compact tee bend installation blowing valves 12.

And (3) closing the vacuum-maintaining valve 10, blowing the reaction powder in the filter 2 out by a blowing gas source, and discharging the reaction powder through the discharge tee 11.

In order to ensure the tightness of the vacuum pump 3 and the fan 4, a ball valve 26 is arranged at the input end of the vacuum pump, and the opening and closing of the ball valve 26 are synchronous with the opening and closing of the vacuum pump 3 and the fan 4.

The working process of the utility model is as follows:

the reaction tank 1 needs to be operated in a vacuum state, and before the reaction occurs, the reaction tank 1 needs to be vacuumized. In order to ensure the effective vacuum degree, a vacuum pump 3 is adopted, so that the reaction tank body 1 is always kept in a long-term stable vacuum state.

After the reaction tank body 1 is vacuumized, the reaction tank body 1 can start to rotate, but in the reaction process, powder needs to be controlled accurately in temperature, a mold temperature controller 5 and a circulating pump 6 are added, a heat medium in the mold temperature controller 5 enters a jacket of the reaction tank body 1 from a high-temperature liquid inlet of the reaction tank body 1 through the circulating pump 6 to be sufficiently transferred with the powder in an inner cylinder body of the reaction tank body 1, and the accurate temperature control of the powder is realized; then the low-temperature liquid returns to the mold temperature controller 5 from the low-temperature liquid outlet of the reaction tank body 1, and the refrigerant is heated by the mold temperature controller 5 and then added into the jacket through the circulating pump 6 until the powder reaches the set temperature. And the reaction tank is always in the rotating process, so that not only can the heat transfer be ensured to be sufficient, but also the uniformity of the temperature of the powder is ensured. And a reaction gas inlet is also arranged in the reaction tank body 1 to ensure the realization of the chemical reaction of the reaction powder and the reaction gas.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A continuous powder feeding reaction tank is characterized by comprising a reaction tank body (1), wherein the reaction tank body (1) is driven by a driving mechanism and is rotatably arranged on a rack (8); the middle part of the reaction tank body (1) is provided with an inner cylinder body (1-1), the inner part of the inner cylinder body (1-1) is provided with a reaction cavity, the periphery of the inner cylinder body (1-1) is sleeved with a jacket (1-2), a temperature control cavity is formed between the inner cylinder body (1-1) and the jacket (1-2), a feeding device (1-3) is arranged in the inner cylinder body (1-1) and the jacket (1-2), the lower end of the feeding device (1-3) is communicated with the reaction cavity, a feeding device (1-3) is arranged in the inner cylinder body (1-1) and the jacket (1-2), the middle part of the feeding device (1-3) is provided with a mixing cylinder (1-31), the side surface of the mixing cylinder (1-31) is provided with a feeding port (1-311), a feeding cover is arranged at the feeding port (1-311), the upper end of the mixing cylinder (1-31) is provided with an air pipe (1-32), the upper end of the air pipe (1-32) is provided with an air inlet (1-321), a plurality of air blowing openings (1-322) are uniformly distributed on the part of the air pipe (1-32) extending into the mixing barrel (1-31), the lower end of the mixing barrel (1-31) is connected with a discharge pipe (1-33), the upper end of the discharge pipe (1-33) extends into the mixing barrel (1-31), a switch valve (1-34) is arranged in the middle of the discharge pipe (1-33), and the lower end of the discharge pipe (1-33) extends into the jacket (1-2) and the inner barrel body (1-1) to be communicated with the reaction cavity; two sides of a jacket (1-2) are respectively connected with the inner ends of first end shafts (1-4) and the inner ends of second end shafts (1-5), the outer ends of the first end shafts (1-4) are provided with first rotary joints (1-6), the outer ends of the second end shafts (1-5) are provided with second rotary joints (1-7), a reaction cavity is communicated with a vacuum pump (3) through a vacuumizing channel, and the temperature of a temperature control cavity is controlled by a circulating temperature control mechanism.

2. The continuous powder feeding reaction tank of claim 1, wherein the vacuumizing channel comprises a first vacuumizing hole (1-9), a second vacuumizing hole (1-15) and a vacuumizing pipe (1-8) which are sequentially communicated, the first vacuumizing hole (1-9) is arranged in the first rotary joint (1-6), the second vacuumizing hole (1-15) is arranged in the first end shaft (1-4), the vacuumizing pipe (1-8) is arranged in the inner cylinder body (1-1) and the jacket (1-2), the inner end of the vacuumizing pipe (1-8) is communicated with the reaction cavity, a filter screen is arranged in the vacuumizing pipe (1-8), and the outer end of the first vacuumizing hole (1-9) is connected with the sucking end of the vacuum pump (3).

3. The continuous powder feeding reaction tank as recited in claim 1, wherein the second evacuation port (1-15) is provided with a helical blade (1-16).

4. The continuous powder feeding reaction tank of claim 1, wherein the circulating temperature control mechanism comprises a circulating channel, the circulating channel is communicated with two sides of the temperature control cavity, the circulating channel is internally provided with a temperature control device and a temperature control drive which are connected, and the temperature control cavity, the circulating channel, the temperature control device and the temperature control drive are filled with a temperature control medium; the circulating channel comprises a first left circulating pore channel, a second left circulating pore channel and a left circulating pipe which are sequentially communicated, the first circulating pore channel is arranged in a first rotary joint (1-6), the second circulating pore channel (1-14) is positioned in a first end shaft (1-4), the other end of the left circulating pipe is communicated with the left end of the temperature control cavity, the outer end of the first circulating pore channel is a medium left port (1-11), and the medium left port (1-11) is communicated with the temperature control device; the circulation channel comprises a first right circulation pore channel, a second right circulation pore channel and a right circulation pipe which are sequentially communicated, the first circulation pore channel is arranged in a second rotary joint (1-7), the second circulation pore channel (1-14) is positioned in a second end shaft (1-5), the other end of the right circulation pipe is communicated with the right end of the temperature control cavity, the outer end of the first circulation pore channel is a medium right port (1-12), and the medium right port (1-12) is communicated with a temperature control drive.

5. The continuous powder feeding reaction tank according to claim 4, wherein the temperature control device is a mold temperature controller (5), the temperature control drive is a circulating pump (6), and the temperature control medium is water or oil.

6. The continuous powder feeding reaction tank as claimed in claim 1, wherein the driving mechanism comprises a driven sprocket (15) and a speed reducer (22), the driven sprocket (15) is installed on the outer periphery of the second end shaft (1-5), the speed reducer (22) and a motor (24) are sequentially installed below the driven sprocket (15), a driving sprocket (21) is installed on an output shaft of the speed reducer (22), the driving sprocket (21) is connected with the driven sprocket (15) through a chain, a driven pulley (23) is installed on an input shaft of the speed reducer (22), a driving pulley (25) is installed on an output shaft of the motor (24), and the driving pulley (25) is connected with the driven pulley (23) through a transmission belt.

7. The continuous powder feeding reaction tank as claimed in claim 2, wherein a filter (2) is arranged between the vacuum pump (3) and the outer end of the first vacuumizing duct (1-9), and the output end of the filter (2) is communicated with the suction end of the vacuum pump (3).

8. The continuous powder feeding reaction tank as claimed in claim 7, wherein a tee joint (9) is arranged between the vacuum pump (3) and the filter (2), and the tee joint (9) is respectively communicated with the output end of the filter (2), the suction end of the vacuum pump (3) and a blowing gas source.

9. The continuous powder feeding reaction tank as claimed in claim 2, wherein a vacuum valve (10) is installed between the outer end of the first vacuum channel (1-9) and the suction end of the vacuum pump (3), and two ends of the vacuum valve (10) are respectively connected with the outer end of the first vacuum channel and the suction end of the vacuum pump (3).

10. The continuous powder feeding reaction tank according to claim 9, wherein a discharge tee (11) is installed between the vacuum valve (10) and the vacuum pump (3), the filter (2) is vertically arranged, the input end of the filter (2) is located below the output end of the filter (2), the upper end of the discharge tee (11) is communicated with the input end of the filter (2), the side end of the discharge tee (11) is communicated with the outer end of the first vacuumizing pore channel, and the lower end of the discharge tee (11) is provided with a discharge valve (12).