CN106582426B - Material suction device and urea machine with same - Google Patents

Abstract

The invention provides a material suction device and a urea machine with the same. The material suction device comprises a plurality of material suction parts, at least one material suction part in the plurality of material suction parts comprises a shell, a feed inlet is formed in the first end of the shell, a discharge outlet is formed in the second end of the shell, and an exhaust port is formed in the shell and used for exhausting air in the shell; the baffle sets up in order to keep apart feed inlet and gas vent in the casing, forms inlet channel and exhaust passage between baffle and the casing lateral wall respectively, and the gas vent is linked together with exhaust passage, forms the excessive flow mouth that communicates inlet channel and exhaust passage between the bottom of baffle and the lateral wall of casing. The material suction device effectively avoids resource waste caused by the fact that urea particles entering the shell from the feed inlet are discharged outside the shell along with air, and meanwhile, the material suction device can effectively prevent the blockage of the feed inlet, and the reliability of the material suction device is improved.

Description

Material suction device and urea machine with same

Technical Field

The invention relates to the technical field of urea processing equipment, in particular to a material suction device and a urea machine with the same.

Background

The heating device in the urea machine in the prior art is generally arranged inside a stirring tank, or inside an ultrapure water tank to heat water entering the stirring tank in the urea machine and prepare a urea solution. The heating mode among the prior art is limited, under the condition of using urea solution in a large number, adopts the heating mode among the prior art to heat water and can not satisfy user's demand, has reduced urea solution's production efficiency. In addition, the material suction device adopted by the urea machine in the prior art is provided with a filter screen at the feed inlet, and the urea particles entering the shell are easily blocked by adopting the filter screen to cause the problem that the feed inlet is easily blocked.

Disclosure of Invention

The invention mainly aims to provide a material suction device and a urea machine with the same, and aims to solve the problem that a material suction port is easy to block in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a suction device including a plurality of suction portions, at least one of the plurality of suction portions including: the device comprises a shell, a first end of the shell is provided with a feeding hole, a second end of the shell is provided with a discharging hole, and the shell is also provided with an exhaust hole for exhausting air in the shell; the baffle, the baffle sets up in order to keep apart feed inlet and gas vent in the casing, forms inlet channel and exhaust passage between baffle and the casing lateral wall respectively, and the gas vent is linked together with exhaust passage, forms the excessive flow mouth that communicates inlet channel and exhaust passage between the bottom of baffle and the lateral wall of casing.

Further, the separator includes: the first plate section is arranged along the vertical direction, the first end of the first plate section is connected with the shell, and the feed inlet and the exhaust outlet are positioned on two opposite sides of the first plate section; the second plate section is connected with the second end of the first plate section and has an included angle, and the second plate section is far away from the air outlet.

Further, the included angle between the second plate section and the second end of the first plate section is a right angle.

Further, the material suction device comprises: the suction portion, suction portion have suction inlet and export, and the export is linked together with the feed inlet, and the suction inlet is used for adsorbing urea granule in order to carry urea granule to the casing in, perhaps, the suction inlet is linked together with the gas vent, and the feed inlet is used for adsorbing urea granule in order to carry urea granule to the casing in.

Further, the material suction device comprises: and the material beating part is rotatably arranged in the shell so as to enable the urea particles attached to the shell to fall off.

Further, the knockout section includes: the connecting rod is rotatably arranged at the feed inlet, a first end of the connecting rod extends towards the inside of the shell, and a second end of the connecting rod extends to the outside of the shell; roll the flitch, roll the first end of flitch and connecting rod and be connected, roll the flitch and extend along the casing lateral wall, the connecting rod drives and rolls the circumferential direction of flitch along the casing.

Further, the knockout part still includes: the handle is arranged at the second end of the connecting rod.

Further, the knockout section includes: the striker plate, striker plate movably set up in the casing than be located the below of rolling the flitch.

Further, the shell is also provided with a water inlet.

Further, the feed inlet of one shell of two adjacent shells is communicated with the exhaust outlet of the other shell.

According to another aspect of the invention, a urea machine is provided, which comprises a material suction device, wherein the material suction device is the material suction device.

By applying the technical scheme of the invention, the material suction device comprises a plurality of material suction parts, at least one material suction part in the plurality of material suction parts comprises a shell, a feeding hole is formed in the first end of the shell, a discharging hole is formed in the second end of the shell, and an exhaust port is formed in the shell and used for exhausting air in the shell. A partition is also provided in the housing. The baffle sets up in order to keep apart feed inlet and gas vent in the casing, forms inlet channel and exhaust passage between baffle and the casing lateral wall respectively, and the gas vent is linked together with exhaust passage, forms the excessive flow mouth that communicates inlet channel and exhaust passage between the bottom of baffle and the lateral wall of casing. The material suction device is provided with a plurality of material suction portions, a feed port of each material suction portion is isolated from an exhaust port by a partition plate arranged in the material suction portion, waste of resources caused by the fact that urea particles entering the shell from the feed port are discharged to the outside of the shell along with air is effectively avoided, the problem that the feed port is blocked can be effectively prevented by the material suction device, and reliability of the material suction device is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic construction of a first embodiment of a suction device of a urea plant according to the invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the suction device of the urea machine in FIG. 1;

FIG. 3 is a flow chart showing the structure of a first embodiment of the suction device of the urea machine in FIG. 1;

FIG. 4 is a flow chart showing the structure of a second embodiment of the suction device of the urea machine in FIG. 2;

FIG. 5 shows a schematic block diagram of the urea machine of FIG. 1;

FIG. 6 shows a schematic block diagram of a first perspective view of the urea machine of FIG. 5;

FIG. 7 shows a schematic diagram of a second perspective view of the urea machine of FIG. 5;

FIG. 8 is a schematic diagram illustrating a third perspective view of the urea machine of FIG. 5;

FIG. 9 is a flow chart showing the structure of a first embodiment in which a suction port of a suction part of a material suction apparatus according to the present invention communicates with an exhaust port of a urine suction apparatus;

FIG. 10 is a flow chart showing the structure of a second embodiment in which a suction port of a suction part of a material suction apparatus according to the present invention communicates with an exhaust port of a urine suction apparatus; and

FIG. 11 is a flow chart showing the structure of the third embodiment in which the suction port of the suction part of the suction device communicates with the exhaust port of the urine suction device according to the present invention.

Wherein the figures include the following reference numerals:

10. a cabinet body;

20. a stirring tank;

21. a material suction device; 211. a feed inlet; 212. an exhaust port;

213. a partition plate;

2131. a first plate section; 2132. a second plate section;

214. a water inlet;

22. a suction section;

23. a material beating part; 231. a connecting rod; 232. rolling a material plate; 233. a handle; 234. a striker plate;

30. a filtering part; 31. a cartridge filter; 32. an activated carbon filter; 33. a first water pump; 34. a membrane filtration section; 35. a second water pump;

40. a water tank section; 41. an intermediate water tank; 42. a pure water tank; 43. a liquid storage tank;

50. a heating section;

60. a feed pipe section.

Detailed Description

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

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application 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 terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, and in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same reference numerals are used to designate the same devices, and thus the description thereof will be omitted.

Referring to fig. 1 to 8, according to an embodiment of the present invention, a suction device is provided.

Specifically, the material suction device 21 includes a plurality of material suction portions, at least one of the material suction portions includes a housing, a feed inlet 211 is disposed at a first end of the housing, a discharge outlet is disposed at a second end of the housing, and an exhaust port 212 is further disposed on the housing, and the exhaust port 212 is used for exhausting air in the housing. There is also a partition 213 within the housing. The partition 213 is disposed in the housing to separate the feed port 211 from the exhaust port 212, an air inlet channel and an exhaust channel are formed between the partition 213 and the sidewall of the housing, the exhaust port 212 is communicated with the exhaust channel, and a flow-through port communicating the air inlet channel and the exhaust channel is formed between the bottom of the partition 213 and the sidewall of the housing. The material suction device is provided with a plurality of material suction portions, a partition plate is arranged in one material suction portion to isolate a feed port of the material suction portion from an exhaust port, waste of resources caused by the fact that urea particles entering the shell from the feed port are discharged outside the shell along with air is effectively avoided, the problem that the feed port is blocked can be effectively prevented by the material suction device, and reliability of the material suction device is improved.

Wherein the baffle 213 comprises a first plate segment 2131 and a second plate segment 2132. The first plate segments 2131 are arranged in the vertical direction, the first ends of the first plate segments 2131 are connected with the shell, and the feeding port 211 and the exhaust port 212 are located on two opposite sides of the first plate segments 2131. Second plate segment 2132 is connected to and angled away from a second end of first plate segment 2131, and second plate segment 2132 is disposed away from exhaust port 212. Set up like this and can prevent effectively that the urea granule from blockking up at feed inlet department, prevented simultaneously that the urea granule from being discharged and causing the problem of wasting of resources.

Preferably, the angle between second plate segment 2132 and the second end of first plate segment 2131 is at a right angle. The arrangement can effectively avoid the problem of waste caused by the discharge of urea particles. Simultaneously, set the contained angle to the right angle, can play the speed that the buffering urea granule falls into the agitator tank effectively, prevent that a large amount of granules from piling up simultaneously inhaling the problem that the material device pay-off mouth and cause the jam.

As shown in fig. 3 and 4, in order to make the urea particles smoothly enter the stirring tank, the suction device includes a suction part 22. The suction portion 22 has a suction port for adsorbing urea to deliver the urea into the casing and an outlet communicating with the feed port 211. The suction port is positioned in the container filled with urea particles, and the outlet is communicated with the feed inlet, so that when the motor of the suction part 22 is started to work, the urea particles can be smoothly conveyed into the stirring tank.

As shown in fig. 9 to 11, in another embodiment of the present invention, the suction port of the suction portion 22 may be communicated with the exhaust port 212, and the feed port 211 may be used for adsorbing urea particles to deliver the urea particles into the casing. The arrangement is such that when the motor of the suction part 22 is started, the urea particles can be smoothly conveyed into the stirring tank.

The suction device comprises a knockout 23. The knockout 23 is rotatably provided in the housing to drop off urea adhering to the housing. The urea particle feeding device has the advantages that the urea particle can be effectively prevented from being attached to the inner wall of the shell, so that the feeding speed of the urea particle is influenced, and the stability and the reliability of the feeding speed of the suction device can be guaranteed.

Wherein, the knockout part 23 includes a connecting rod 231 and a material rolling plate 232. The connection rod 231 is rotatably disposed at the feed port 211, a first end of the connection rod 231 extends toward the inside of the housing, and a second end of the connection rod 231 extends to the outside of the housing. The first end of rolling flitch 232 and connecting rod 231 is connected, rolls flitch 232 and extends along the casing lateral wall, and connecting rod 231 drives the circumferential direction who rolls flitch 232 along the casing. Roll flitch 232 and can give the urea granule that attaches to on the casing lateral wall at the pivoted in-process and make down, avoid the urea granule to pile up on the shells inner wall and then influence the stability of urea granule feeding. Preferably, the end of the material rolling plate 232 is disposed with a gap from the side wall of the housing.

In order to facilitate the worker's removal of the urea pellets adhering to the inner wall, a T-shaped handle 233 is provided on the second end of the connecting rod 231. The function of beating can be achieved by holding the handle 233 with a hand and rotating the handle 233.

Further, the knockout 23 includes a striker plate 234. The striker plate 234 is movably disposed in the housing and located below the material rolling plate 232. Set up the striker plate and can make suction portion 22 during operation, suction portion 22 is to inhaling the interior evacuation of material device, at this moment, striker plate 234 rebound is sealed in order to be located the export of striker plate 234 top, under suction portion 22's effect, the continuous inside pile up of casing of urea granule, when suction portion 22 stop work, striker plate 234 rotates downwards and opens the export, urea granule gets into the agitator tank this moment, in suction portion 22 intermittent type nature work promptly, striker plate 234 repeatedly realizes the action of opening and closing. Meanwhile, the baffle 234 also prevents urea particles which are already located below the baffle 234 from being sucked back into the upper shell and discharged outside the shell to cause waste of the urea particles.

In order to clean the interior of the housing in time, a water inlet 214 is also provided in the housing. The inside of the shell can be cleaned by conveying water into the shell from the water inlet 214, and the phenomenon that urea particles are attached to the inner wall of the shell for a long time to corrode the shell and influence the service life of the shell is avoided. Wherein, when the suction part 22 is in the working state, the water inlet is in the closed state, and the water inlet can be opened only when water needs to be input into the shell.

As shown in fig. 3 and 4, the housing is provided in plurality, and the inlet 211 of one of the two adjacent housings is communicated with the outlet 212 of the other housing. The discharge hole of each shell is communicated with the inner cavity of the stirring tank. The arrangement is that when a part of urea particles are discharged through the exhaust channel of the shell in the front, the part of urea particles enter the next shell again, are conveyed to the discharge hole through the air inlet pipeline in the shell and enter the stirring tank to play a role of secondary exhaust, and the like. The urea particle preparation device has the advantages that the urea particles in the conveying pipe can be effectively and completely conveyed into the stirring tank to prepare the urea solution, so that the utilization rate of the urea particles reaches one hundred percent and zero waste.

Referring again to fig. 1, the suction device includes a feed pipe section 60. One end of the feeding pipe section 60 is communicated with the inner cavity of the shell, the side wall of the feeding pipe section 60 is provided with a feeding hole 211, the other end of the feeding pipe section 60 is a free end and is closed, and part of the connecting rod 231 is positioned in the feeding pipe section 60 and is coaxially arranged. This arrangement enables the connecting rod 231 to be efficiently arranged on the housing and to be rotated.

According to another aspect of the present invention, as shown in fig. 5-8, a urea machine is provided. The urea machine comprises a material suction device, and the material suction device is the material suction device in the embodiment. Specifically, the suction device comprises a shell. A feeding hole 211 is formed in the first end of the shell, a discharging hole is formed in the second end of the shell, an air outlet 212 is formed in the shell, and the air outlet 212 is used for discharging air in the shell; the baffle 213, baffle 213 set up in the casing in order to keep apart feed inlet 211 and gas vent 212, form air intake passage and exhaust passage between baffle 213 and the casing lateral wall respectively, gas vent 212 is linked together with the exhaust passage, forms the excessive flow mouth that communicates air intake passage and exhaust passage between the bottom of baffle 213 and the lateral wall of casing. Through set up baffle 213 between feed inlet 211 and gas vent 212 in order to separate feed inlet 211 and gas vent 212, when preventing effectively that to inhale urea granule through feed inlet 211 and will inhale the gas outgoing in the material device, urea granule can not go out the exhaust from gas vent 212 and cause the waste of urea granule, adopts this kind of feeding mode can effectively avoid urea granule to block up the problem that influences urea solution production in feed inlet department simultaneously.

The urea machine comprises a cabinet body 10, a stirring tank 20, a filtering part 30, a water tank part 40 and a heating part 50. The agitation tank 20 is disposed in the cabinet 10. The filter unit 30 is disposed in the cabinet 10. An inlet of the water tank part 40 communicates with an outlet of the filter part 30. The heating unit 50 is disposed in the cabinet 10, the heating unit 50 communicates with an outlet of the water tank unit 40, and an outlet of the heating unit 50 communicates with the agitator tank 20.

In this embodiment, adopt solitary heating portion 50 to heat the water in water tank portion 40, then will carry the water that has heated through heating portion 50 to and make the urea in agitator tank 20, set up like this and make heating portion 50 can be timely heat the water in water tank portion 40, improved the efficiency of this urea machine effectively, satisfied user's demand.

The heating unit 50 is located at one side of at least one of the agitation tank 20, the filtering unit 30, and the water tank unit 40. The processing difficulty of the shell of the urea machine can be effectively reduced by the arrangement, so that the layout of the urea machine is more reasonable and simpler. Of course, as shown in fig. 5, the heating unit 50 is located on one side of the stirring tank 20, the filtering unit 30, and the water tank unit 40.

The filter unit 30 includes a filter. The filter is arranged at the bottom of the cabinet body 10, a water inlet of the filter is communicated with an external water source, and a water outlet of the filter is communicated with the water tank part 40. The device can effectively filter impurities from an external water source, and effectively improves the quality of the urea solution.

Further, the filter includes a cartridge filter 31. The water inlet of the filter element 31 is communicated with an external water source, and the water outlet of the filter element 31 is communicated with the water tank part 40. The arrangement can effectively filter out small-particle fine sand and other impurities in the water source.

In order to further improve the filtering performance of the filter, the filter further comprises an inlet of the activated carbon filter 32 communicated with an outlet of the cartridge filter 31, and an outlet of the activated carbon filter 32 communicated with the water tank part 40. This arrangement can effectively remove small organic substances and heavy metals from the water in the cartridge filter 31.

In order to ensure sufficient water pressure throughout the water circulation, the filter portion 30 further includes a first water pump 33. The first water pump 33 is provided on a pipeline between the agitation tank 20 and the tank portion 40.

The filter house 30 comprises a membrane layer filter house 34. The membrane filtration part 34 is disposed on the pipeline between the agitation tank 20 and the water tank part 40 and above the first water pump 33. The device can further filter external water sources, effectively improves the quality of water, further improves the quality of urea solution and improves the reliability of the urea machine.

The tank part 40 includes an intermediate tank 41. The intermediate water tank 41 is disposed above the agitation tank 20, a water inlet of the intermediate water tank 41 is communicated with a water outlet of the filtering portion 30, and a water outlet of the intermediate water tank 41 is communicated with the heating portion 50. Set up like this and can play the effect of storing in middle water tank with the water that filters for it is reserve to have enough water source when needs carry out mass production urea solution occasionally.

The water tank portion 40 further includes a pure water tank 42. The pure water tank 42 is disposed above the filter unit 30 and is disposed in parallel with the intermediate water tank 41, an inlet of the pure water tank 42 is communicated with an outlet of the intermediate water tank 41, and an outlet of the pure water tank 42 is communicated with the heating unit 50. This arrangement allows the pure water tank 42 to prepare pure water by using the water in the intermediate water tank 41 and then inputting to the heating portion 50 for heating. Effectively improves the urea production rate of the urea machine.

The water tank portion 40 also includes a reservoir tank 43. The liquid reserve tank 43 is arranged at the bottom of the cabinet body 10, the first water pump 33 is positioned at one side of the liquid reserve tank 43, the liquid inlet of the liquid reserve tank 43 is communicated with the liquid outlet of the stirring tank 20, and the liquid outlet of the liquid reserve tank 43 is communicated with the user side. Set up liquid reserve tank 43 and first water pump 33 on the bottom of the cabinet body 10, set up like this and avoided setting up the heavier first water pump 33 of weight on liquid reserve tank 43 and cause the unstable condition of urea cabinet weight center of gravity. The provision of the liquid storage tank 43 at the bottom enables the urea solution prepared in the stirred tank to be stored for later use.

The filter part 30 includes a second water pump 35. The second water pump 35 is disposed on the bottom of the cabinet 10, and the second water pump 35 is disposed on a pipeline connecting the middle water tank 41 and the agitator tank 20. The arrangement can effectively ensure that the pipelines have enough water pressure for water flow conveying.

The heating part 50 includes a heating water tank for storing and heating water from the water tank part 40. Set up like this and make this heating water tank can play the water of storing certain heat temperature, when carrying out urea solution preparation again, carry the water of water tank portion 40 to heating in the heating water tank and heat, because the water of fairly high temperature just is stored in the heating water tank originally, make the water that comes from water tank portion 40 and original water mix after the heating of short time just can make the water in the heating water tank reach required temperature, carry it to the preparation of carrying out urea solution in the agitator tank then, can shorten the heating time of the required water of preparation urea solution effectively, the suitability and the reliability of this urea solution have been improved.

Wherein the suction part 22 sucks urea particles from a container (shown as a in fig. 3 and 4) containing the urea particles and sends the urea particles to the suction device 21 (two suction devices 21 are shown in fig. 3 and 4 respectively), and sends the urea particles to the urea stirring tank through a feeding port (shown as B in fig. 1 and 2) of the suction device 21 to prepare the urea solution.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A material suction device is characterized by comprising a plurality of material suction parts, wherein the material suction parts are used for sucking urea particles, and at least one material suction part in the plurality of material suction parts comprises:

the device comprises a shell, wherein a feeding hole (211) is formed in the first end of the shell, a discharging hole is formed in the second end of the shell, an exhaust hole (212) is formed in the shell, and the exhaust hole (212) is used for exhausting air in the shell;

the baffle plate (213) is arranged in the shell to isolate the feed inlet (211) from the exhaust port (212), an air inlet channel and an exhaust channel are respectively formed between the baffle plate (213) and the side wall of the shell, the exhaust port (212) is communicated with the exhaust channel, and an overflow port communicated with the air inlet channel and the exhaust channel is formed between the bottom of the baffle plate (213) and the side wall of the shell;

a suction part (22), wherein the suction part (22) is provided with a suction opening and an outlet, the outlet is communicated with the feed opening (211), the suction opening is used for adsorbing urea particles to convey the urea particles into the shell, or the suction opening is communicated with the exhaust opening (212), and the feed opening (211) is used for adsorbing urea particles to convey the urea particles into the shell;

wherein the separator (213) comprises:

the first plate segment (2131), the first plate segment (2131) is arranged along the vertical direction, the first end of the first plate segment (2131) is connected with the shell, and the feed port (211) and the exhaust port (212) are positioned on two opposite sides of the first plate segment (2131);

a second plate segment (2132), the second plate segment (2132) connected to a second end of the first plate segment (2131) and having an included angle, the second plate segment (2132) disposed distal to the exhaust port (212);

the included angle between the second plate segment (2132) and the second end of the first plate segment (2131) is a right angle.

2. A suction device according to claim 1, characterized in that it comprises:

a beating part (23), wherein the beating part (23) is rotatably arranged in the shell so as to make the urea particles attached to the shell fall off.

3. A suction device according to claim 2, characterized in that the knock-out section (23) comprises:

a connecting rod (231), wherein the connecting rod (231) is rotatably arranged at the feed port (211), a first end of the connecting rod (231) extends towards the inside of the shell, and a second end of the connecting rod (231) extends to the outside of the shell;

roll flitch (232), roll flitch (232) with the first end of connecting rod (231) is connected, roll flitch (232) and follow the casing lateral wall extends, connecting rod (231) drive roll flitch (232) and follow the circumferential direction of casing.

4. A suction device according to claim 3, characterized in that the knockout (23) further comprises:

a handle (233), the handle (233) being disposed on a second end of the connecting rod (231).

5. A suction device according to claim 3, characterized in that the knock-out section (23) comprises:

the baffle plate (234), the baffle plate (234) movably set up in the casing is located roll the below of flitch (232).

6. The suction device according to claim 1, wherein the housing further has a water inlet (214) therein.

7. The suction device according to claim 1, wherein the inlet (211) of one of the two adjacent shells is communicated with the outlet (212) of the other shell.

8. Urea machine comprising a suction device, characterized in that the suction device is according to any of claims 1 to 7.

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