CN115180307A

CN115180307A - Vacuum buffer tank

Info

Publication number: CN115180307A
Application number: CN202210988518.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-10-14

Abstract

The invention relates to the technical field of buffer tanks, in particular to a vacuum buffer tank, which comprises a tank body, a liquid drainage mechanism, a side wall cleaning mechanism and a guide plate cleaning mechanism, wherein the tank body is provided with a liquid drainage hole; the liquid discharging mechanism can collect liquid condensed and collected in the vacuum cavity of the tank body through the liquid collecting box when the buffer tank works, automatically open the liquid discharging hole of the liquid collecting box through the self weight of the collected liquid when a certain amount of liquid is collected, discharge the liquid from the vacuum cavity, and automatically seal the vacuum cavity through the sealing plate when the liquid is discharged, so that the sealing property and the vacuum degree of the vacuum cavity are ensured in the liquid discharging process, the buffer tank can normally perform buffer work when discharging the liquid, and the working efficiency of equipment is ensured; the side wall cleaning mechanism can clean liquid attached to the inner wall of the vacuum cavity in the tank body in the liquid discharging process, so that the liquid attached to the inner wall is gathered in the liquid collecting box and is discharged synchronously, and the liquid is discharged more cleanly and thoroughly.

Description

Vacuum buffer tank

Technical Field

The invention relates to the technical field of buffer tanks, in particular to a vacuum buffer tank.

Background

The vacuum buffer tank is an important accessory equipment of the reciprocating pump, is used for reducing the unevenness of flow in a pipeline, and is divided into a suction buffer tank and a discharge buffer tank. Wherein, when the vacuum distillation carries out the separation and purification of liquid, need carry out the evacuation through vacuum buffer tank cooperation reciprocating pump to stills to through reducing stills internal gas pressure, reduce the liquid boiling point, make things convenient for the evaporation separation of liquid. And vacuum buffer tank in the course of the work, can condense the gathering part liquid in it to lead to the buffer tank to produce the hydrops, influence the evacuation work of buffer tank.

At present, the conventional vacuum buffer tank can realize liquid drainage under the condition of destroying the vacuum in the tank, and the frequent switching of a valve for liquid drainage causes that a large amount of energy consumption and time are wasted when the vacuum state is reached again each time, the working efficiency is reduced, the production cost is increased, and the resource waste is caused; the liquid of condensation adsorbs easily on the buffer tank inner wall simultaneously, leads to the buffer tank can not get rid of liquid totally when flowing back at every turn, therefore needs to increase the flowing back frequency of buffer tank, has further reduced the work efficiency of buffer tank.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a vacuum buffer tank, which solves the problems that a large amount of energy consumption and time are wasted when the vacuum buffer tank reaches a vacuum state again each time liquid is discharged by frequently opening and closing a valve, the working efficiency is reduced, the production cost is increased, and the resource is wasted.

The technical scheme adopted by the invention for solving the technical problems is as follows: a vacuum buffer tank comprises a tank body, a liquid discharge mechanism, a side wall cleaning mechanism and a guide plate cleaning mechanism, wherein an air inlet is formed in the side wall of the tank body, an air outlet is formed in the upper end of the tank body, a support leg and a liquid discharge port are formed in the bottom end of the tank body, and a valve is mounted on the liquid discharge port; the liquid drainage mechanism comprises a guide plate and a liquid collection box, the guide plate is fixedly arranged in the tank body, the guide plate is positioned below the air inlet, and the bottom end of the guide plate is provided with a guide opening; the liquid collection box is arranged below the flow guide plate, a sealing sliding ring is fixedly arranged on the outer ring of the top end of the liquid collection box, the sealing sliding ring is slidably arranged on the inner wall of the tank body, a lifting rod is fixedly arranged inside the liquid collection box, the upper end of the lifting rod extends to the upper side of the flow guide plate through the flow guide port, a sealing plate located above the flow guide port is fixedly arranged on the lifting rod, a plurality of uniformly distributed liquid outlet holes are formed in the outer ring of the lower end of the liquid collection box, sealing plugs are fixedly clamped in the liquid outlet holes, and sealing plug opening and closing units are arranged on the outer sides of the sealing plugs; the side wall cleaning mechanism is arranged at the upper end of the lifting rod and is used for cleaning liquid attached to the inner wall of the tank body; the guide plate cleaning mechanism is installed on the guide plate, connected with the lifting rod and used for cleaning liquid on the surface of the guide plate.

Further, sealing plug switching unit includes support, sliding sleeve, spring, support fixed mounting in on the lateral surface of collection liquid box, sliding sleeve fixed mounting in on the support, slidable mounting has the push-and-pull rod in the sliding sleeve, the one end fixed connection of push-and-pull rod in the lateral surface of sealing plug, the other end fixed mounting of push-and-pull rod has the wedge, spring activity suit in on the push-and-pull rod, just the one end butt of spring in on the sliding sleeve, the other end butt in on the wedge, the below of wedge is provided with and is located draw-in groove on the internal wall of jar.

Further, the top surface of wedge is provided with the arc spigot surface, the top surface of draw-in groove is provided with the arc flaring.

Furthermore, the liquid outlet hole is a tapered hole which gradually expands outwards, and the sealing plug is a tapered sealing plug which is in sealing clamping connection with the tapered hole.

Furthermore, a plurality of evenly distributed limiting slide blocks are fixedly mounted on the outer ring of the sealing slip ring, and a plurality of limiting slide grooves which are correspondingly connected with the limiting slide blocks in a sealing and sliding manner are formed in the inner wall of the tank body.

Further, lateral wall clearance mechanism is including fixed cover, lifting ring connecting rod, lifting ring and scraping ring, fixed cover is provided with a plurality ofly, and is a plurality of fixed cover from top to bottom even fixed mounting in on the lifter, every the outer lane of fixed cover all is provided with lifting ring, fixed cover with pass through between the lifting ring connecting rod fixed connection, scraping ring fixed mounting in lifting ring's outer lane, just the lateral surface of scraping ring hug closely in on the inner wall of the jar body.

Furthermore, the section of the scraping ring is of a sheet structure with knife edges arranged at the upper edge and the lower edge, and the scraping ring is fixedly connected with the lifting ring through a plurality of uniformly distributed reinforcing connecting rods.

Further, guide plate clearance mechanism includes hob, swivel sleeve and rotatory ring, hob fixed mounting in the middle section of lifter, be provided with in the swivel sleeve with the arc hole that the hob corresponds to peg graft in through this arc hole activity on the hob, rotatory ring slidable mounting in on the inner wall of the jar body, the swivel sleeve with through rotatory ring connecting rod fixed connection between the rotatory ring, fixed mounting has a plurality of lieing in on the rotatory ring the strip of scraping on guide plate surface.

Furthermore, a plurality of limiting blocks fixedly arranged on the inner wall of the tank body are arranged above the rotating ring.

Further, the scraping strip is an arc-shaped scraping strip.

The invention has the beneficial effects that:

(1) According to the vacuum buffer tank, the liquid drainage mechanism is arranged, so that liquid collected by cold condensation in the vacuum cavity of the tank body can be collected through the liquid collection box when the buffer tank works, the liquid outlet hole of the liquid collection box is automatically opened through the self weight of the collected liquid when a certain amount of liquid is collected, the liquid is discharged from the vacuum cavity, and meanwhile, the vacuum cavity is automatically sealed through the sealing plate when the liquid is discharged, so that the sealing property and the vacuum degree of the vacuum cavity are ensured in the liquid drainage process, the buffer tank can normally perform buffer work when the buffer tank drains liquid, and the working efficiency of equipment is ensured.

(2) According to the vacuum buffer tank, the side wall cleaning mechanism can clean liquid attached to the inner wall of the vacuum cavity in the tank body in the liquid discharging process, so that the liquid attached to the inner wall is gathered in the liquid collecting box and is synchronously discharged, the liquid is discharged more cleanly and thoroughly, the buffer tank is prevented from being interfered by the liquid to normally work, the liquid discharging frequency of the liquid discharging mechanism is reduced, and the service life of the vacuum buffer tank is prolonged.

(3) According to the vacuum buffer tank, the guide plate cleaning mechanism can clean and guide liquid attached to the guide plate in the liquid discharging process, so that the liquid can flow and gather in the liquid collecting box more quickly, the liquid collecting efficiency is improved, the liquid can be discharged more cleanly and thoroughly, and residual accumulated liquid attached to the guide plate is prevented.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of an overall structure of a vacuum buffer tank according to a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of the vacuum surge tank shown in FIG. 1;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is an enlarged view of the structure at B of FIG. 2;

FIG. 5 is an enlarged view of the structure of FIG. 2 at C;

FIG. 6 is a schematic structural view of the vane guide plate cleaning mechanism shown in FIG. 2;

in the figure: 1. a tank body; 11. an air inlet; 12. an air outlet; 13. a support leg; 14. a liquid discharge port; 15. a valve; 2. a liquid discharge mechanism; 21. a baffle; 22. a flow guide port; 23. a sealing plate; 24. a lifting rod; 25. a liquid collecting box; 26. a liquid outlet hole; 27. a sealing plug; 28. a seal plug opening and closing unit; 281. a support; 282. a sliding sleeve; 283. a push-pull rod; 284. a wedge block; 285. a spring; 286. a card slot; 29. sealing a slip ring; 210. a limiting slide block; 211. a limiting chute; 3. a side wall cleaning mechanism; 31. fixing a sleeve; 32. a lifting ring connecting rod; 33. a lifting ring; 34. scraping rings; 35. reinforcing the connecting rod; 4. a deflector cleaning mechanism; 41. a screw rod; 42. a rotating sleeve; 43. a rotating ring connecting rod; 44. a rotating ring; 45. scraping the strips; 46. a limiting block; 47. an arc-shaped hole.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 and 2, the vacuum buffer tank of the present invention comprises a tank body 1, a liquid discharge mechanism 2, a side wall cleaning mechanism 3 and a guide plate cleaning mechanism 4, wherein a gas inlet 11 is arranged on the side wall of the tank body 1, a gas outlet 12 is arranged at the upper end of the tank body 1, a support leg 13 and a liquid discharge port 14 are arranged at the bottom end of the tank body 1, and a valve 15 is arranged on the liquid discharge port 14; wherein, air inlet 11 is connected with stills, and gas outlet 12 and vacuum pump connection can be to the interior evacuation of stills through the vacuum pump, carry out the vacuum distillation, have during the evacuation simultaneously partial steam to be carried jar body 1 in to the condensation is liquid in jar body 1, flowing back mechanism 2 installs in jar body 1, can gather the liquid of condensation to regularly discharge liquid, lateral wall cleaning mechanism 3 and guide plate cleaning mechanism 4 also all install in jar body 1 for clear up the water conservancy diversion to the liquid of jar body 1 at flowing back mechanism 2 during operation, make jar internal 1 liquid get rid of cleaner.

As shown in fig. 2 and 3, in this embodiment, the drainage mechanism 2 includes a flow guide plate 21 and a liquid collection box 25, the flow guide plate 21 is fixedly installed inside the tank 1, the flow guide plate 21 is located below the air inlet 11, and a flow guide opening 22 is formed at the bottom end of the flow guide plate 21; the liquid collecting box 25 is arranged below the guide plate 21, a sealing slip ring 29 is fixedly arranged on the outer ring of the top end of the liquid collecting box 25, the sealing slip ring 29 is slidably arranged on the inner wall of the tank body 1, the lifting rod 24 is fixedly arranged inside the liquid collecting box 25, the upper end of the lifting rod 24 extends to the upper part of the guide plate 21 through the guide opening 22, and a sealing plate 23 positioned above the diversion port 22 is fixedly arranged on the lifting rod 24, a plurality of liquid outlet holes 26 which are uniformly distributed are formed in the outer ring of the lower end of the liquid collecting box 25, sealing plugs 27 are fixedly clamped in the liquid outlet holes 26, a sealing plug opening and closing unit 28 is arranged on the outer sides of the sealing plugs 27, wherein, the tank body 1 is internally sealed and isolated from the guide plate 21 and the liquid collecting box 25 from top to bottom in sequence to form a vacuum cavity, a liquid collecting cavity and a liquid storage cavity, when the tank body 1 is in a vacuum state, the liquid collecting box 25 moves upwards along the inner wall of the tank body 1 under the action of negative pressure suction in the vacuum cavity, at the moment, the liquid collecting cavity in the liquid collecting box 25 is communicated with the vacuum cavity at the upper side, liquid condensed and collected in the vacuum cavity is conveyed into the liquid collecting box 25 through the flow guide opening 22 for collection and storage, the gravity borne by the liquid collecting box 25 is increased along with the gradual increase of the liquid collected in the liquid collecting box 25 until the gravity is greater than the negative pressure suction of the vacuum cavity to the liquid collecting box 25, at the moment, the liquid collecting box 25 moves downwards along the tank body 1 under the action of the gravity, meanwhile, the sealing plate 23 is driven to move downwards through the lifting rod 24 until the sealing plate 23 moves into the flow guide opening 22 and seals the flow guide opening 22, at the moment, the vacuum cavity and the liquid collection cavity are in a sealed and isolated state, and then the liquid outlet hole 26 on the lower side of the liquid collection box 25 is opened through the sealing plug opening and closing unit 28, so that liquid in the liquid collection box 25 is gradually discharged into the liquid storage cavity at the bottom of the tank body 1.

As shown in fig. 2 and 3, in this embodiment, the sealing plug opening and closing unit 28 includes a support 281, a sliding sleeve 282, and a spring 285, the support 281 is fixedly mounted on an outer side surface of the liquid collection box 25, the sliding sleeve 282 is fixedly mounted on the support 281, a push-pull rod 283 is slidably mounted in the sliding sleeve 282, one end of the push-pull rod 283 is fixedly connected to an outer side surface of the sealing plug 27, a wedge 284 is fixedly mounted at the other end of the push-pull rod 283, the spring 285 is movably sleeved on the push-pull rod 283, one end of the spring 285 abuts against the sliding sleeve 282, the other end of the spring abuts against the wedge 284, and a slot 286 located on an inner wall of the tank 1 is disposed below the wedge 284; the distance between the wedge block 284 and the clamping groove 286 is the same as the distance between the sealing plate 23 and the flow guide port 22, the wedge block 284 abuts against the inner wall of the tank body 1, the spring 285 is in an extrusion contraction state, when the sealing plate 23 descends to seal the flow guide port 22, the wedge block 284 synchronously descends to the position of the clamping groove 286, at the moment, the wedge block 284 moves towards the clamping groove 286 under the action of the reset elastic force of the spring 285, so that the liquid collecting box 25 is clamped and fixed through the cooperation of the wedge block 284 and the clamping groove 286, the liquid collecting box 25 is prevented from continuously descending, and when the wedge block 284 moves outwards, the wedge block outwards pulls the sealing plug 27 through the push-pull rod 283, so that the sealing plug 27 is synchronously driven to move outwards, the liquid outlet hole 26 is opened, the liquid in the liquid collecting box 25 is gradually discharged into the liquid storage cavity at the bottom of the tank body 1, and then the valve 15 can be periodically opened, and the liquid stored in the liquid outlet 14 is discharged; and as the liquid in the liquid collection box 25 is discharged, the gravity of the liquid collection box is gradually reduced, when the sum of the gravity of the liquid collection box 25 and the contraction resistance of the spring 285 is smaller than the negative pressure suction force of the vacuum cavity to the liquid collection box 25, the liquid collection box 25 is adsorbed again and ascends, meanwhile, the wedge-shaped block 284 slides from the clamping groove 286 and is abutted to the inner wall of the tank body 1 again, the sealing plug 27 is pushed to reset through the push-pull rod 283, the liquid outlet hole 26 is sealed again, the sealing plate 23 synchronously ascends to open the flow guide port 22, so that the liquid collection box 25 is communicated with the vacuum cavity again, and the liquid in the vacuum cavity starts to be collected.

As shown in fig. 3, in this embodiment, an arc-shaped guide surface is disposed on a top surface of the wedge block 284, and an arc-shaped flared opening is disposed on a top surface of the blocking slot 286, so that upward abutting resistance of the blocking slot 286 to the wedge block 284 can be reduced, and the upward movement of the wedge block 284 after resetting is more labor-saving.

As shown in fig. 3, in this embodiment, the liquid outlet hole 26 is a tapered hole gradually expanding outward, the tapered sealing plug of the sealing plug 27 and the tapered hole is clamped in a sealing manner, when the sealing plug 27 is squeezed and abutted in the liquid outlet hole 26, the liquid outlet hole 26 can limit the sealing plug 27, so that the sealing plug 27 is prevented from being displaced excessively, the liquid outlet hole 26 and the sealing plug 27 can be connected and sealed more firmly under the abutting action force, the liquid outlet 26 is prevented from leaking, and the sealing performance of the vacuum cavity and the liquid storage cavity can be ensured.

As shown in fig. 3, in this embodiment, a plurality of evenly distributed limiting sliders 210 are fixedly mounted on an outer ring of the sealing slip ring 29, a plurality of limiting sliding grooves 211 corresponding to the limiting sliders 210 in a sealing sliding clamping manner are disposed on an inner wall of the tank body 1, the limiting sliders 210 and the limiting sliding grooves 211 can limit the circumferential direction of the sealing slip ring 29 and the liquid collecting box 25, the liquid collecting box 25 is prevented from rotating in the lifting movement process, so that the wedge block 284 and the clamping groove 286 are prevented from being dislocated, and the liquid outlet hole 26 can be ensured to be normally opened.

As shown in fig. 2 and 4, in this embodiment, the side wall cleaning mechanism 3 includes a plurality of fixing sleeves 31, a plurality of lifting ring connecting rods 32, a plurality of lifting rings 33 and a scraping ring 34, the fixing sleeves 31 are uniformly and fixedly mounted on the lifting rod 24 from top to bottom, the outer ring of each fixing sleeve 31 is provided with a lifting ring 33, the fixing sleeves 31 are fixedly connected with the lifting rings 33 through the lifting ring connecting rods 32, the scraping ring 34 is fixedly mounted on the outer ring of the lifting ring 33, the outer side surface of the scraping ring 34 is tightly attached to the inner wall of the tank 1, when the collecting box 25 drives the lifting rods 24 to move downward, the lifting rod 24 drives the scraping ring 34 to move downward synchronously along the inner wall of the tank 1, so that residual liquid attached to the inner wall of the tank 1 is scraped by the scraping ring 34, and the scraped liquid falls onto the guide plate 21 under the action of gravity, is conveyed into the collecting box 25 by the guide port 22, and is finally discharged by the collecting box 25; this lateral wall clearance mechanism 3 clears up adnexed liquid on the internal wall of vacuum chamber in jar body 1 at the flowing back in-process for adnexed liquid gathers in the collection liquid box 25 synchronous discharge on the internal wall, thereby makes liquid get rid of more thoroughly cleanly, prevents that liquid from disturbing the buffer tank and normally working, can reduce the flowing back frequency of flowing back mechanism 2 simultaneously, thereby increases its life.

As shown in fig. 4, in this embodiment, the section of the scraping ring 34 is a thin plate structure with blades at the upper and lower edges, and the scraping ring 34 and the lifting ring 33 are fixedly connected through a plurality of reinforcing connecting rods 35 uniformly distributed, the lifting ring 33 can be matched with the reinforcing connecting rods 35 to reinforce the scraping ring 34, so as to prevent the scraping ring 34 from deforming, and a gap isolated by the reinforcing connecting rods 35 is provided between the lifting ring 33 and the scraping ring 34, so that the liquid scraped from the upper side can fall onto the guide plate 21 from the gap.

As shown in fig. 2 and 5, in this embodiment, the baffle cleaning mechanism 4 includes a screw rod 41, a rotating sleeve 42 and a rotating ring 44, the screw rod 41 is fixedly installed at the middle section of the lifting rod 24, an arc hole 47 corresponding to the screw rod 41 is provided in the rotating sleeve 42, and is movably inserted into the screw rod 41 through the arc hole 47, the rotating ring 44 is slidably installed on the inner wall of the tank 1, the rotating sleeve 42 is fixedly connected with the rotating ring 44 through a rotating ring connecting rod 43, and a plurality of scraping strips 45 located on the surface of the baffle 21 are fixedly installed on the rotating ring 44; wherein, rotatory ring 44 bottom surface butt is on the outer lane border of guide plate 21, when lifter 24 is down, it drives the synchronous down of hob 41, hob 41 is rotatory through spiral transmission drive swivel sleeve 42 at the in-process that goes down, and then drive rotatory ring 44 and scrape 45 synchronous revolutions through rotatory ring connecting rod 43, scrape 45 and collect the water conservancy diversion to the liquid that drops to guide plate 21 surface at rotatory in-process, accelerate the liquid flow rate, make the liquid on it faster get into the collection liquid box 25 through water conservancy diversion mouth 22 in, guide plate 21 surface still remains liquid when preventing that water conservancy diversion mouth 22 from closing, thereby guarantee that vacuum chamber intracavity liquid clears away totally.

As shown in fig. 2 and 5, in this embodiment, a plurality of limit blocks 46 fixedly mounted on the inner wall of the tank body 1 are disposed above the rotating ring 44, and the limit blocks 46 can limit the position above the rotating ring 44, so as to prevent the rotating ring 44 from being driven to move upwards when the screw rod 41 moves upwards and returns to the original position, thereby enabling the scraping strips 45 to be always tightly attached to the air deflector 21.

As shown in fig. 6, in this embodiment, the scraping strips 45 are arc-shaped scraping strips, which can improve the guiding effect of the scraping strips 45 during rotation, and further improve the efficiency of guiding and collecting the liquid on the surface of the baffle 21.

Specifically, when the tank body 1 is in a vacuum state, the liquid collecting box 25 moves upwards along the inner wall of the tank body 1 under the action of negative pressure suction in a vacuum cavity, at the moment, the liquid collecting cavity in the liquid collecting box 25 is communicated with the vacuum cavity on the upper side, liquid condensed and collected in the vacuum cavity is conveyed into the liquid collecting box 25 through the flow guide port 22 to be collected and stored, as the liquid collected in the liquid collecting box 25 is gradually increased, the gravity borne by the liquid collecting box 25 is increased until the gravity is larger than the negative pressure suction on the liquid collecting box 25 by the vacuum cavity, at the moment, the liquid collecting box 25 moves downwards along the tank body 1 under the action of gravity, the lifting rod 24 drives the sealing plate 23, the scraping ring 34 and the spiral rod 41 to move downwards, the scraping ring 34 scrapes off residual liquid attached to the inner wall of the tank body 1 in the descending process, the scraped liquid falls onto the flow guide plate 21 under the action of gravity, the spiral rod 41 drives the rotary sleeve 42 to rotate through spiral transmission in the descending process, the rotary rod 43 drives the rotary ring 44 and the scraping strip 45 to synchronously rotate, the liquid falling onto the surface of the flow guide plate 21 in the flow guide plate is guided by the flow guide bar 45, and the liquid is collected more quickly, so that the liquid in the liquid collecting box 22 enters the liquid in the liquid collecting box; until the sealing plate 23 moves into the flow guide port 22 and seals the flow guide port 22, and at the moment, the liquid collecting box 25 drives the wedge-shaped block 284 to synchronously move downwards to the position of the clamping groove 286, the wedge-shaped block 284 moves inwards in the clamping groove 286 under the action of the reset elasticity of the spring 285, so that the liquid collecting box 25 is clamped and fixed by the cooperation of the wedge-shaped block 284 and the clamping groove 286, the liquid collecting box 25 is prevented from continuously moving downwards, and when the wedge-shaped block 284 moves outwards, the wedge-shaped block outwards pulls the sealing plug 27 through the push-pull rod 283, so that the sealing plug 27 is synchronously driven to move outwards, the liquid outlet hole 26 is opened, and the liquid in the liquid collecting box 25 is gradually discharged into the liquid storage cavity at the bottom of the tank body 1; when the sum of the gravity of the liquid collection box 25 and the contraction resistance of the spring 285 is smaller than the negative pressure suction force of the vacuum cavity to the liquid collection box 25, the liquid collection box 25 is adsorbed to move upwards again, the wedge-shaped block 284 slides from the clamping groove 286 to be abutted against the inner wall of the tank body 1 again, the push-pull rod 283 pushes the sealing plug 27 to reset, the liquid outlet hole 26 is sealed again, the sealing plate 23 synchronously moves upwards to open the flow guide port 22, so that the liquid collection box 25 is communicated with the vacuum cavity again to start to collect the liquid in the vacuum cavity; therefore, the liquid in the vacuum cavity can be continuously discharged into the liquid storage cavity at the lower end of the tank body 1 under the condition of ensuring the vacuum degree in the vacuum cavity, and a worker can open the valve 15 periodically to discharge the liquid stored in the liquid storage cavity through the liquid discharge port 14.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A vacuum buffer tank, comprising:

the tank comprises a tank body (1), wherein an air inlet (11) is formed in the side wall of the tank body (1), an air outlet (12) is formed in the upper end of the tank body (1), supporting legs (13) and a liquid discharge port (14) are arranged at the bottom end of the tank body (1), and a valve (15) is mounted on the liquid discharge port (14);

the liquid drainage mechanism (2) comprises a guide plate (21) and a liquid collection box (25), the guide plate (21) is fixedly arranged in the tank body (1), the guide plate (21) is positioned below the air inlet (11), and the bottom end of the guide plate (21) is provided with a guide opening (22); the liquid collecting box (25) is arranged below the guide plate (21), a sealing sliding ring (29) is fixedly arranged on the outer ring of the top end of the liquid collecting box (25), the sealing sliding ring (29) is slidably arranged on the inner wall of the tank body (1), a lifting rod (24) is fixedly arranged inside the liquid collecting box (25), the upper end of the lifting rod (24) extends to the upper part of the guide plate (21) through the guide opening (22), a sealing plate (23) positioned above the guide opening (22) is fixedly arranged on the lifting rod (24), a plurality of uniformly distributed liquid outlet holes (26) are formed in the outer ring of the lower end of the liquid collecting box (25), sealing plugs (27) are fixedly clamped in the liquid outlet holes (26), and a sealing plug opening and closing unit (28) is arranged on the outer side of the sealing plug (27);

the side wall cleaning mechanism (3) is arranged at the upper end of the lifting rod (24) and is used for cleaning liquid attached to the inner wall of the tank body (1);

guide plate clearance mechanism (4), guide plate clearance mechanism (4) install in on guide plate (21), and with lifter (24) are connected, be used for to the liquid on guide plate (21) surface clears up.

2. A vacuum buffer tank according to claim 1, wherein: the sealing plug opening and closing unit (28) comprises a support (281), a sliding sleeve (282) and a spring (285), wherein the support (281) is fixedly installed on the outer side face of the liquid collecting box (25), the sliding sleeve (282) is fixedly installed on the support (281), a push-pull rod (283) is installed in the sliding sleeve (282) in a sliding mode, one end of the push-pull rod (283) is fixedly connected to the outer side face of the sealing plug (27), a wedge block (284) is fixedly installed at the other end of the push-pull rod (283), the spring (285) is movably sleeved on the push-pull rod (283), one end of the spring (285) abuts against the sliding sleeve (282), the other end of the spring abuts against the wedge block (284), and a clamping groove (286) located on the inner wall of the tank body (1) is arranged below the wedge block (284).

3. The vacuum buffer tank of claim 2, wherein: the top surface of wedge (284) is provided with the arc spigot surface, the top surface of draw-in groove (286) is provided with the arc flaring.

4. A vacuum buffer tank according to claim 2, wherein: the liquid outlet hole (26) is a tapered hole which gradually expands outwards, and the sealing plug (27) is a tapered sealing plug which is in sealing clamping connection with the tapered hole.

5. A vacuum buffer tank according to claim 2, wherein: the outer ring of the sealing slip ring (29) is fixedly provided with a plurality of evenly distributed limiting sliding blocks (210), and the inner wall of the tank body (1) is provided with a plurality of limiting sliding grooves (211) which are correspondingly connected with the limiting sliding blocks (210) in a sealing sliding clamping manner.

6. A vacuum buffer tank according to claim 1, wherein: lateral wall clearance mechanism (3) are including fixed cover (31), lift ring connecting rod (32), lift ring (33) and scrape ring (34), fixed cover (31) are provided with a plurality ofly, and a plurality of fixed cover (31) from top to bottom even fixed mounting in on lifter (24), every the outer lane of fixed cover (31) all is provided with lift ring (33), fixed cover (31) with pass through between lift ring (33) lift ring connecting rod (32) fixed connection, scrape ring (34) fixed mounting in the outer lane of lift ring (33), just the lateral surface of scraping ring (34) hug closely in on the inner wall of the jar body (1).

7. The vacuum buffer tank of claim 6, wherein: the section of the scraping ring (34) is of a sheet structure with knife edges arranged at the upper edge and the lower edge, and the scraping ring (34) is fixedly connected with the lifting ring (33) through a plurality of uniformly distributed reinforcing connecting rods (35).

8. A vacuum buffer tank according to claim 1, wherein: the flow guide plate cleaning mechanism (4) comprises a screw rod (41), a rotary sleeve (42) and a rotary ring (44), the screw rod (41) is fixedly installed at the middle section of the lifting rod (24), an arc-shaped hole (47) corresponding to the screw rod (41) is formed in the rotary sleeve (42), the rotary sleeve (42) is movably inserted into the screw rod (41) through the arc-shaped hole (47), the rotary ring (44) is slidably installed on the inner wall of the tank body (1), the rotary sleeve (42) is fixedly connected with the rotary ring (44) through a rotary ring connecting rod (43), and a plurality of scraping strips (45) located on the surface of the flow guide plate (21) are fixedly installed on the rotary ring (44).

9. A vacuum buffer tank according to claim 1, wherein: a plurality of limiting blocks (46) fixedly arranged on the inner wall of the tank body (1) are arranged above the rotating ring (44).

10. A vacuum buffer tank according to claim 1, wherein: the scraping strips (45) are arc-shaped scraping strips.