CN215691849U

CN215691849U - Filter capable of exhausting gas quickly

Info

Publication number: CN215691849U
Application number: CN202121435952.8U
Authority: CN
Inventors: 吕海江; 陈继杭; 韩磊
Original assignee: Hangzhou Longze Filter Equipment Co ltd
Current assignee: Zhang Chunyan
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-02-01
Anticipated expiration: 2031-06-28

Abstract

The utility model discloses a filter capable of exhausting gas quickly, which comprises a first shell, a second shell, a first exhaust pipe and a second shell, wherein the first shell is provided with an inlet, an outlet and an exhaust port; a second housing; a filter element forming an annular space between the periphery and the inner wall of the second shell; the filter element comprises at least a filter medium, a center rod, a first end cover and a second end cover, wherein the first end cover is close to the first shell and is provided with a first communication port for communicating the inlet with the annular space; a first guide channel and a second guide channel communicated with the exhaust port are formed between the first end cover and the first shell, the second guide channel is provided with a first end communicated with the annular space and a second end communicated with the inlet, the first guide channel is communicated with the annular space through a first communication port and is communicated with the second end of the second guide channel, raw fluid flowing in from the inlet firstly enters the first guide channel and flows to the first communication port, entrained bubbles are gathered towards the first communication port and the second end of the second guide channel, the bubble discharge path is short, and the bubble discharge rate is high.

Description

Filter capable of exhausting gas quickly

Technical Field

The utility model belongs to the technical field of filtration, and particularly relates to a filter capable of exhausting air rapidly.

Background

The existing filtering equipment uses three independent interfaces, namely an exhaust port, an inlet and an output port, raw material fluid enters through the inlet and then enters the bottom of a shell, the fluid is filtered by a filter membrane, pollutants are intercepted, and clean filtrate is discharged through the output port; simultaneously, bubbles entrained in the feed fluid exit the housing through the exhaust port. To better clear air bubbles from a rapidly ventable filter, the upper surface of the housing cover is configured with an angle of inclination directed upward toward the vent, allowing the bubbles to gradually rise to the highest point within the housing and then exit the housing.

Generally, the raw material fluid is stored in a storage device, pumped out by a power device such as a pump and conveyed to an inlet through a pipeline, and because the power device generates a disturbance effect on the raw material fluid, gas in the environment is continuously mixed into the raw material fluid, in other words, in the whole filtering process, bubbles continuously flow into the filtering device along with the raw material fluid, so that the exhaust requirement of the filtering device is improved, the filtering device is required to be capable of rapidly exhausting the bubbles outwards, otherwise, because of continuous inflow of the bubbles, the overall filtering rate of the filtering device is reduced, and the bubbles which are not exhausted timely are possibly carried into clean filtrate, and further the quality of downstream process products is influenced. In addition, the feed fluid itself is entrained with a greater amount of bubbles in some customer sites, which also increases the venting requirements of the filtration device.

In the conventional filtering apparatus, since the inlet and the exhaust port are sealed and separated, bubbles entrained in the raw fluid must slowly rise from the bottom of the housing to reach the vicinity of the exhaust port and then be discharged, that is, the discharge path of the bubbles is relatively long, which results in a slow discharge rate of the bubbles, that is, the bubbles inside the filtering apparatus cannot be discharged in time, further causing a decrease in the filtering rate, and because the bubbles are collected inside the filtering apparatus, the flow rate of the raw fluid into the housing through the inlet is decreased.

Because of the disturbance of the equipment to the flow of the raw material fluid, more bubbles carried by the raw material fluid, and the influence factors such as slow bubble discharge rate caused by the defects of the exhaust structure of the existing filtering equipment, the existing filtering equipment cannot meet the control requirement of the downstream working section on the bubbles, therefore, the exhaust structure of the bubbles of the existing filtering equipment needs to be improved so as to accelerate the discharge rate of the bubbles, thereby meeting the control requirement of the downstream working section on the bubble content in the process fluid.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the filter which has high bubble discharge rate, can meet the exhaust requirement of the raw material fluid with high bubble content, has high filtering rate and can rapidly exhaust.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a filter capable of exhausting gas quickly comprises,

a first housing having an inlet, an outlet, and an exhaust;

the top end of the second shell is hermetically connected with the first shell;

the filter element is positioned in the second shell, and an annular space is formed between the periphery of the filter element and the inner wall of the second shell;

the filter element at least comprises a filter medium, a center rod, a first end cover and a second end cover which are hermetically connected with the two ends of the filter element, the first end cover is close to the first shell and forms a center hole penetrating through the thickness direction of the first end cover and a first communication port for communicating the inlet with the annular space, and the outlet is communicated with the hollow interior of the filter element through the center hole;

a second guide passage is formed between the first end cover and the first shell and communicated with the exhaust port, the second guide passage is provided with a first end communicated with the annular space and a second end communicated with the inlet port respectively, and the second guide passage is used for guiding bubbles at the upstream of the annular space and the first communication port to the exhaust port;

a first guide channel communicated with the inlet is formed between the first end cover and the first shell, the first guide channel is communicated with the annular space through a first communication port so as to guide the feeding fluid flowing from the inlet into the annular space, and a second end of the second guide channel is communicated with the first guide channel.

In the filter capable of exhausting gas rapidly provided by the present application, a first guide channel and a second guide channel are formed between a first end cap and a first housing, the second guide channel is communicated with a gas exhaust port, a second end of the second guide channel is communicated with an inlet and the first guide channel, a first end of the first guide channel is communicated with an annular space, and the inlet is communicated with the first guide channel and a first communication port, so that a raw fluid flowing in from the inlet first enters the first guide channel, flows to the first communication port along the first guide channel, and then enters the annular space through the first communication port, the first guide channel has a buffer effect on the flow of the raw fluid, the flow rate of the raw fluid with a higher flow rate is reduced after reaching the first guide channel, and thus the raw fluid can be retained in the first guide channel for a short time, wherein entrained bubbles are gathered in the direction of the second communication port and the second end of the second guide channel, then discharged through the air outlet, and because the first guide channel and the second guide channel are positioned between the first end cover and the first shell, the discharge path of the part of air bubbles is short, and the discharge rate of the air bubbles is high; and the bubbles entrained in the fluid in the annular space gradually rise, flow into the second guide channel from the first end of the second guide channel and also flow to the exhaust port, that is, the filter capable of rapidly discharging air has two bubble discharge paths, which is equivalent to adding a short bubble discharge path to the original bubble discharge path, and therefore, the filter capable of exhausting gas quickly greatly improves the exhaust rate, solves the problems of bubble increase caused by the disturbance of equipment to raw material fluid, more bubbles carried by the raw material fluid and slow bubble exhaust rate caused by the defects of the exhaust structure of the existing filter equipment, the content of bubbles in the filtrate can not meet the control requirement of a downstream working section on the bubbles, the problems of more bubbles and slow bubble discharge caused by the use environment and process characteristics are solved in a targeted manner, and the filtration rate is correspondingly improved; the bubbles which enter the annular space can enter the second end of the second guide channel after passing through the first communication port and then are discharged from the exhaust port, and can also enter the second guide channel from the first end of the second guide channel and then flow to the second end of the second guide channel and are also discharged from the exhaust port, the path of the exhaust port of the bubbles in the annular space is also increased, and the discharge rate of the bubbles is further accelerated. In addition, the first guide channel has a buffering effect on the flowing of the raw material fluid, and the flow speed of the raw material fluid with the higher flow speed is reduced after the raw material fluid reaches the first guide channel, so that the flow speed of the raw material fluid flowing from the first communication port to the annular space is reduced, bubbles formed by the impact of the fluid flowing to the second shell are correspondingly reduced, and the requirement of controlling the bubbles in a downstream working section is favorably met.

Further, the first guide channel has a third end located inside the first end cap and radially inside the first housing and a fourth end located at the outer edge of the first end cap and the first housing, the bottom of the first guide channel extends obliquely downward from the third end toward the fourth end, the inlet is disposed near the third end, and the first guide channel communicates at the fourth end with both the second end of the second guide channel and the annular space.

The first guide channel which extends from inside to outside in an inclined and downward mode plays a role in guiding the flow of the feeding fluid, and the feeding fluid at the inlet is guided to enter the annular space; the fact that the fourth end of the first guide channel is lower than the third end also facilitates a larger height difference at the communication position of the first guide channel and the second guide channel, and reduces the entering of the feed fluid in the first guide channel into the second guide channel.

Further, at the communication position of the first guide channel and the second guide channel, the axial height of the bottom of the second guide channel is larger than that of the bottom of the first guide channel.

The height difference design of the communication part of the first guide channel and the second guide channel can effectively prevent the feeding fluid retained in the first guide channel for a short time from flowing into the second guide channel, reduce the outflow of the feeding fluid from the exhaust port and reduce the waste of the fluid.

Further, the second guide passage is provided with a partition for reducing a flow area of the second end of the second guide passage, the partition separating the exhaust port from the first communication port.

The isolating part can reduce the amount of raw material fluid in the first guide channel flowing into the second guide channel, so that the feed fluid is reduced to be discharged from the exhaust port, and the waste of the fluid to be filtered is reduced.

Further, the isolation part is located in the middle of the second guide channel, or the isolation part is connected with the side wall of the second guide channel.

The isolating part is positioned in the middle of the second guide channel, so that the raw material fluid at the upstream of the first communication port can be better blocked, and the quantity of the raw material fluid entering the second guide channel is reduced; the isolating part is connected to the side wall of the second guide channel, so that the channel can be concentrated in the middle of the second guide channel as much as possible, the concentrated discharge of bubbles is facilitated, the diffusion in the discharge process is avoided, the exhaust efficiency is improved, and the quantity of the raw material fluid entering the second guide channel from the circulation of the first guide channel is reduced.

Further, the bottom of the second guide channel extends obliquely upwards from the first end to the second end; or the part of the bottom of the second guide channel close to the first end extends obliquely upwards, and the part of the bottom of the second guide channel close to the second end is equal in height.

The second guide channel which is integrally and obliquely arranged can better guide the bubbles to move upwards and accelerate the discharge rate of the bubbles; the second guide channel which is partially obliquely arranged can guide the bubbles to accelerate the discharge, reduce the internal volume of the second guide channel and reduce the accumulation of the bubbles in the second guide channel. No matter the annular space is wholly inclined or partially inclined, when the liquid level of the raw material fluid in the annular space rises to reach the height of the second guide channel due to shaking and the like, the inclined structure can guide the fluid back to the annular space again, and the fluid is prevented from entering the second guide channel in a large amount.

Further, the axial projection of the exhaust port is located inside the second guide channel, and the exhaust port is disposed near the second end of the second guide channel.

The second end height of the second guide channel is higher, the second end of the second guide channel is communicated with the fourth end of the first guide channel, all bubbles are gathered at the second end of the second guide channel, and the air outlet is closer to the second end of the second guide channel, so that the bubbles can be discharged quickly.

Further, a raised part is formed at the top of the second guide channel and protrudes out of the outer surface of the first shell, and the exhaust port is located at the highest point in the axial direction of the raised part.

When the air bubbles are in the second guide channel, the air bubbles move upwards and are concentrated on the bulge part, and the air outlet is arranged at the highest point in the axial direction of the bulge part, so that the air bubbles can be discharged quickly and thoroughly.

Furthermore, a second communication port used for communicating the second guide channel and the annular space is formed in the first end cover, a collection groove is formed in the end face, deviating from the first shell, of the first end cover, and the collection groove is communicated with the annular space, the first communication port and the second communication port.

The second communication port is designed on the first end cover, so that the processing is convenient, and the bubbles in the annular space enter the second guide channel through the second communication port and are discharged through the exhaust port, so that the discharge of the bubbles in the annular space is realized; and the bubbles in the annular space can also move upwards, and are firstly collected into the collecting groove, then flow into the second guide channel through the first communication port and the second communication port, and are discharged through the exhaust port, the regularity and the directionality of the rising movement of the bubbles are improved due to the arrangement of the collecting groove, and the efficiency of discharging the bubbles is further improved.

Further, the central angle of the first communication port and the second communication port is larger than 90 °.

The second guide channel extends to the second end along the outer edge of the first end cover from the first end in a bending mode, the first communicating port and the second communicating port are communicated with the collecting groove, bubbles in the collecting groove can be guided into the second guide channel from respective corresponding positions, an included angle between the first communicating port and the second communicating port is larger than 90 degrees, the collecting groove is enabled to be separated into two parts, the length difference of the two parts is not too large, and the rate of the bubbles in the collecting groove flowing to the second guide channel through the first communicating port and the second communicating port is relatively more balanced.

The utility model has the beneficial effects that: in the filter capable of rapidly exhausting gas, a first guide passage and a second guide passage are formed between a first end cover and a first housing, the second guide passage is communicated with a gas exhaust port, a second end of the second guide passage is communicated with an inlet and a first guide passage, a first end of the first guide passage is communicated with an annular space, and the inlet is communicated with the first guide passage and a first communication port, so that raw fluid flowing in from the inlet firstly enters the first guide passage, flows to the first communication port along the first guide passage, and then enters the annular space through the first communication port, the first guide passage has a buffer function on the flow of the raw fluid, the flow rate of the raw fluid with higher flow rate is reduced after the raw fluid reaches the first guide passage, and thus the raw fluid can be retained in the first guide passage for a short time, wherein entrained bubbles are gathered in the direction of the first communication port and the second end of the second guide passage, then discharged through the air outlet, and because the first guide channel and the second guide channel are positioned between the first end cover and the first shell, the discharge path of the part of air bubbles is short, and the discharge rate of the air bubbles is high; and the bubbles entrained in the fluid in the annular space gradually rise, flow into the second guide channel from the first end of the second guide channel and also flow to the exhaust port, that is, the filter capable of rapidly discharging air has two bubble discharge paths, which is equivalent to adding a short bubble discharge path to the original bubble discharge path, and therefore, the filter capable of exhausting gas quickly greatly improves the exhaust rate, solves the problems of bubble increase caused by the disturbance of equipment to raw material fluid, more bubbles carried by the raw material fluid and slow bubble exhaust rate caused by the defects of the exhaust structure of the existing filter equipment, the content of bubbles in the filtrate can not meet the control requirement of a downstream working section on the bubbles, the problems of more bubbles and slow bubble discharge caused by the use environment and process characteristics are solved in a targeted manner, and the filtering rate of the filter is correspondingly improved; the air bubbles which enter the annular space can enter the second end of the second guide channel after passing through the first communication port and then are discharged from the air outlet, and can also enter the second guide channel from the first end of the second guide channel and then flow to the second end of the second guide channel and are also discharged from the air outlet, so that the path of the air bubble outlet in the annular space is increased, and the discharge rate of the air bubbles is further increased. In addition, the first guide channel has a buffering effect on the flowing of the raw material fluid, and the flow speed of the raw material fluid with the higher flow speed is reduced after the raw material fluid reaches the first guide channel, so that the flow speed of the raw material fluid flowing from the first communication port to the annular space is reduced, bubbles formed by the impact of the fluid flowing to the second shell are correspondingly reduced, and the requirement of controlling the bubbles in a downstream working section is favorably met.

Drawings

Fig. 1 is a perspective view of a filter capable of rapidly exhausting air according to the present invention.

Fig. 2 is a perspective view of a filter element (filter medium is not shown) of the filter capable of rapidly exhausting air provided by the utility model.

Fig. 3 is a perspective view of a first end cap of a filter capable of rapidly exhausting air according to the present invention.

Fig. 4 is a first perspective view of the first end cap of the filter capable of exhausting air rapidly according to the present invention.

Fig. 5 is a second perspective view of the first end cap of the rapid degassing filter according to the present invention.

FIG. 6 is a side view, partially broken away, of a first end cap of a rapid drainable filter according to the present invention.

Fig. 7 is a sectional perspective view of a filter capable of rapidly exhausting air according to the present invention.

Fig. 8 is a perspective view of a first housing of the filter capable of rapidly exhausting air according to the present invention.

Fig. 9 is a bottom view of the first housing of the rapid degassing filter according to the present invention.

Fig. 10 is a first perspective view, in cross-section, of a filter (with the first housing removed) for rapid air venting in accordance with the present invention.

Fig. 11 is a second perspective view, in cross-section, of a filter (with the first housing removed) according to the present invention that provides for rapid air venting.

Wherein 1-first housing, 11-inlet, 12-outlet, 13-vent, 2-second housing, 21-guide channel, 3-filter element, 31-center rod, 32-housing, 321-guide rib, 322-void, 34-first end cap, 341-first communication port, 342-second communication port, 35-second end cap, 36-hollow interior of filter element, 37-first guide channel, 371-third end, 372-fourth end, 38-second guide channel, 381-first end, 382-second end, 383-spacer, 384-first spacer, 385-second spacer, 39-center hole, 4-annular space, 5-ridge, 6-collection groove, 71-first connection rib, 72-second rib, 73-third rib, 74-fourth rib, 741-first opening, 742-guide face, 75-fifth rib, 751-second opening, 76-sixth rib, 761-third opening, 77-rib, 78-connecting part.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 11, a filter capable of rapidly exhausting air includes a first housing 1, a second housing 2 having a top end hermetically connected to the first housing 1, and a filter cartridge 3 positioned inside the second housing 2.

As shown in fig. 7, an annular space 4 is formed between the outer periphery of the filter element 3 and the inner wall of the second housing 2, the first housing 1 has an inlet 11, an outlet 12, and a vent 13, and the inlet 11 and the vent 13 are communicated with the annular space 4, and the outlet 12 is communicated with the hollow interior 36 of the filter element 3.

As shown in fig. 2, the filter cartridge 3 includes a center rod 31, a housing 32, a filter medium (not shown) disposed between the center rod 31 and the housing 32, and a first end cap 34 and a second end cap 35 sealingly and fixedly attached to both ends of the center rod 31, the first end cap 34 being disposed at the top end of the filter cartridge 3 and adjacent to the first housing 1. The first end cap 34 is formed with a central hole 39 extending through the thickness thereof and a first communication port 341 for communicating the inlet 11 with the annular space 4, and the outlet 12 communicates with the hollow interior 36 of the filter element 3 through the central hole 39.

A second guide passage 38 is formed between the first end cap 34 and the first housing 1 and communicates with the exhaust port 13, the second guide passage 38 having a first end 381 communicating with the annular space 4 and a second end 382 communicating with the inlet port 11, respectively, the second guide passage 38 being for guiding the air bubbles upstream of the annular space 4 and the first communication port 341 toward the exhaust port 13.

For example, the second guide channel 38 is formed by the first end cover 34 and the first housing 1 in a split manner, i.e., a part of the second guide channel is located on the end surface of the first end cover 34 facing the first housing 1, and a part of the second guide channel is located on the side surface of the first housing 1 facing the first end cover 34, i.e., the axial lower part of the second guide channel 38 is formed on the first end cover 34, the axial upper part thereof is formed on the first housing 1, and the upper part and the lower part are opposite in position and matched in shape.

Specifically, the first end cover 34 extends axially upward toward the surface of the first casing 1 to form a rib, and the rib is in sealing engagement with the surface of the first casing 1 toward the first end cover 34 to form a second guide channel 38; still alternatively, the surface of the first housing 1 facing the first end cover 34 extends axially downward to form a rib, and the rib and the surface of the first end cover 34 facing the first housing 1 are in sealing fit to form a second guide channel 38; still alternatively, the first end cap 34 axially extends upward to form a rib toward the surface of the first housing 1, the corresponding position of the surface of the first housing 1 toward the first end cap 34 also axially extends downward to form a rib, the ribs of the first housing 1 and the rib of the second housing are spliced to form the second guide channel 38, in this embodiment, the second guide channel 38 is formed in the third manner.

The second guide channel 38 may extend obliquely upward from the first end 381 toward the second end 382 at the bottom of the first end cap 34. Of course, or as shown in fig. 6, it may also be a part of the guide channel, such as the bottom of the second guide channel 38 near the first end 381 extends obliquely upward, and the bottom of the second guide channel near the second end 382 is at the same height, so as to guide the bubbles upward and accelerate the discharge rate.

The second guide channel 38 arranged obliquely integrally can better guide the bubbles to move upwards and accelerate the discharge rate of the bubbles; the second guide passage 38, which is partially inclined, reduces the internal volume of the second guide passage 38 and reduces the accumulation of bubbles inside the second guide passage 38 while guiding the bubbles to accelerate the discharge. Whether wholly or partially inclined, the inclined configuration may redirect fluid back into the annular space 4 when the raw fluid level in the annular space 4 rises to the level of the second guide channel 38 due to sloshing or the like, avoiding substantial ingress of fluid into the second guide channel 38.

A first guide passage 37 is further formed between the first end cap 34 and the first housing 1, the first guide passage 37 communicating with the inlet 11 and communicating with the annular space 4 through the first communication port 341 for guiding the feed fluid flowing in from the inlet 11 into the annular space 4. The first guide passage 37 communicates with the second end 382 of the second guide passage 38.

In this embodiment, the first guide channel 37 is formed by splicing the first end cover 34 and the first housing 1, that is, a part of the first guide channel is located on the end surface of the first end cover 34 facing the first housing 1, and a part of the first guide channel is located on the side surface of the first housing 1 facing the first end cover 34, that is, the axial lower part of the first guide channel 37 is formed on the first end cover 34, the axial upper part thereof is formed on the first housing 1, and the upper part and the lower part are opposite in position and matched in shape.

Specifically, the first end cover 34 extends axially upward toward the surface of the first casing 1 to form a rib, and the rib is in sealing engagement with the surface of the first casing 1 toward the first end cover 34 to form a first guide channel 37; still alternatively, the surface of the first housing 1 facing the first end cover 34 extends axially downward to form a rib, and the rib and the surface of the first end cover 34 facing the first housing 1 are in sealing fit to form a first guide channel 37; still alternatively, the first end cap 34 extends axially upward to form a rib toward the surface of the first housing 1, the corresponding position of the surface of the first housing 1 toward the first end cap 34 also extends axially downward to form a rib, and the ribs of the two extend to form the first guide channel 37. In this embodiment, the first guide passage 37 is formed in a third manner.

In the filter capable of rapid exhaust, a first guide passage 37 and a second guide passage 38 are formed between the first end cap 34 and the first housing 1, the second guide passage 38 is communicated with the exhaust port 13, the second end 382 is communicated with the inlet 11 and the first guide passage 37, the first end 381 is communicated with the annular space 4, and the inlet 11 is communicated with the first guide passage 37 and the first communication port 341, so that the raw material fluid flowing from the inlet 11 first enters the first guide passage 37, flows along the first guide passage 37 to the first communication port 341, and then enters the annular space 4 through the first communication port 341, the first guide passage 37 buffers the flow of the raw material fluid, the raw material fluid with a higher flow rate is reduced after reaching the first guide passage 37, and the raw material fluid is retained in the first guide passage 37 for a short time, and entrained bubbles are collected in the direction of the first communication port 341 and the second end 382 of the second guide passage 38 And then discharged through the air outlet 13, because the first guide passage 37 and the second guide passage 38 are again located between the first end cap 34 and the first housing 1, the discharge path of the part of the air bubbles is short and the discharge rate of the air bubbles is fast; the bubbles entrained in the fluid in the annular space 4 gradually rise and flow into the second guide channel 38 from the first end 381 of the second guide channel 38 and also flow to the exhaust port 13, i.e. the filter capable of exhausting gas quickly has two bubble discharge paths, which is equivalent to adding a short-length bubble discharge path on the basis of the original bubble discharge path, so that the exhaust rate provided by the filter capable of exhausting gas quickly is greatly improved, the problems that the bubble content in the filtrate cannot meet the control requirement of the downstream working section on the bubbles due to the increase of bubbles caused by the disturbance of the equipment to the raw material fluid, the bubbles entrained by the raw material fluid and the slow bubble discharge caused by the defect of the exhaust structure of the existing filter equipment are solved, and the problems of more bubbles and slow bubble discharge caused by the use environment and the process characteristics are pertinently solved, the filtration rate is correspondingly increased; the air bubbles that have entered the annular space 4 may pass through the first communication port 341, enter the second end 382 of the second guide passage 38, and then be discharged from the exhaust port 13, may enter the second guide passage 38 from the first end 381 of the second guide passage 38, and then flow to the second end 382 thereof, and may also be discharged from the exhaust port 13, so that the discharge port path of the air bubbles in the annular space 4 is also increased, and the discharge rate of the air bubbles is further increased. In addition, since the first guide channel 37 has a buffering function on the flow of the raw material fluid, the flow rate of the raw material fluid with a higher flow rate decreases after reaching the first guide channel 37, and therefore, the flow rate of the raw material fluid flowing from the first communication port 341 to the annular space 4 decreases, so that bubbles formed by the impact of the fluid flow on the second housing 2 are correspondingly reduced, and the requirement of bubble control in the downstream section is favorably met.

Preferably, the first guide channel 37 has a third end 371 located inside the first end cap 34 and radially inside the first housing 1 and a fourth end 372 located at the outer edge of the first end cap 34 and the first housing 1. The bottom of the first guide channel 37 extends obliquely downward from the third end 371 towards the fourth end 372, the inlet 11 is disposed near the third end 371, and the fourth end 372 communicates with the second end 382 of the second guide channel 38 and the annular space 4, so that the first guide channel 37 guides the flow of the feed fluid, the feed fluid is guided into the annular space 4, and the raw material fluid flows through the fourth end 372 of the first guide channel 37, and entrained bubbles can be gathered towards the second end 382 of the second guide channel 38 and then discharged from the gas outlet 13. The fact that the fourth end 372 of the first guide channel 37 is lower than the third end 371 also facilitates a greater height difference at the connection between the first guide channel 37 and the second guide channel 38, reducing the entrance of feed fluid in the first guide channel 37 into the second guide channel 38.

In order to reduce the inflow of the feed fluid, which is stagnated in the first guide passage 37 for a short time, into the second guide passage 38 and out of the exhaust port 13, the axial height of the bottom of the second guide passage 38 is larger than the axial height of the bottom of the first guide passage 37 at the communication between the first guide passage 37 and the second guide passage 38, i.e., there is a height difference between the second guide passage 38 and the first guide passage 37.

In order to reduce the flow area of the second end 382 of the second guide passage 38, a partition 383 is provided on the second guide passage 38, and the partition 383 separates the gas outlet 13 from the first communication port 341, that is, a part of the space of the second end 382 of the second guide passage 38 is occupied by the partition 383, so that the amount of the raw material fluid in the first guide passage 37 flowing into the second guide passage 38 is reduced, and the feed fluid is discharged from the gas outlet 13 is reduced.

Specifically, the isolation part 383 is located in the middle of the second guide channel 38, and at this time, a flow channel is formed between two sides of the isolation part 383 and two inner walls of the second guide channel 38, respectively, and the isolation part 383 located in the middle of the second guide channel 38 can play a better blocking role on the feed fluid, so as to reduce the amount of the feed fluid in the first guide channel 37 flowing into the second guide channel 38. Alternatively, the partition 383 is connected to the side wall of the second guide passage 38, and the flow passage is located in the middle of the second guide passage 38, thereby facilitating the concentrated discharge of the bubbles. As shown in fig. 4, the partition 383 includes two first partition blocks 384 connected to the sidewalls of the second guide passage 38, respectively, and a flow passage is formed between the two first partition blocks 384. The two first isolation blocks 384 can be arranged in a positive mode or a staggered mode, and the number of the two first isolation blocks can be multiple groups or one group.

In order to ensure that the bubbles in the second guide channel 38 smoothly flow to the exhaust port 13 and shorten the exhaust path, the projection of the exhaust port 13 in the axial direction is located inside the second guide channel 38, and the exhaust port 13 is located close to the second end 382 of the second guide channel 38, i.e. the distance between the exhaust port 13 and the second end 382 of the second guide channel 38 is smaller than the distance between the first end 381 of the second guide channel 38. The above structure makes all the bubbles gather at the second end 382 of the second guide channel 382, and the exhaust port 13 is closer to the second end 382 of the second guide channel 382, which also facilitates the rapid exhaust of the bubbles.

The above-mentioned structure also makes the first guide channel 37 extend obliquely relative to the straight line where the inlet 11 and the exhaust port 13 are located, i.e. the exhaust port 13 is offset from the fourth end 372 of the first guide channel 37, so as to reduce the outflow of the feeding fluid through the exhaust port 13 as much as possible and reduce the waste of the fluid.

In order to form an orderly exhaust path and also to increase the exhaust speed, a swelling portion 5 is formed at the top of the second guide passage 38, protruding from the outer surface of the first housing 1, and the exhaust port 13 is located at the highest point in the axial direction of the swelling portion 5, as shown in fig. 7 and 8.

A second communication port 342 for communicating the second guide passage 38 with the annular space 4 is formed in the first end cap 34, and specifically, as shown in fig. 2 and 4, the second communication port 342 is located at a first end 381 of the second guide passage 38.

As shown in fig. 2 and 3, the end surface of the first end cap 34 facing the first casing 1 has a first connecting rib 71, a second connecting rib 72, a third connecting rib 73, and a rib 77 at the outer edge. The first ribs 71 are formed with the axially lower portion of the first guide channel 37 on the inner side thereof, the second ribs 72 are formed around the outer periphery of the center hole 39, and the third ribs 73 and the ribs 77 are formed with the axially lower portion of the second guide channel 38 therebetween.

Accordingly, as shown in fig. 9, the surface of the first housing 1 facing the first end cap 34 has a fourth connecting rib 74 for sealing connection with the first connecting rib 71, a fifth connecting rib 75 for sealing connection with the second connecting rib 72, a sixth connecting rib 76 for sealing connection with the third connecting rib 73, and an annular connecting portion 78 located radially outside the sixth connecting rib 76, the connecting portion 78 being for sealing connection with both the protruding rib 77 and the top end surface of the second housing 2.

A first opening 741 leading to the inlet 11 is formed inside the fourth bead 74, a second opening 751 leading to the outlet 12 is formed inside the fifth bead 75, a third opening 761 leading to the exhaust port 13 is formed between the sixth bead 76 and the connecting portion 78, and a space between the sixth bead 76 and the connecting portion 78 forms an axial upper portion of the second guide passage 38. The inner space of the fourth linking rib 74 forms an axially upper portion of the first guide passage 37 and communicates with the third opening 761, and the region of the fourth linking rib 74 between the end portion of the third opening 761 and the third opening 761 forms a guide surface 742 extending obliquely upward. The guide surface 742 provided obliquely guides the air bubbles in the first guide passage 37 to the third opening 761 and is discharged from the air outlet 13.

The end of the guide surface 742 facing the third opening 761 has a second spacer block 385 located opposite the first spacer block 384, and the second spacer block 385 separates a part of the space between the guide surface 742 and the third opening 761. The structure of the isolation part 383 also includes the second isolation block 385. The partition 383 can ensure that the feed fluid flowing in the first guide passage 37 enters the second guide passage 38 in as small an amount as possible and is not discharged from the exhaust port 13.

The rib 77 extends axially and protrudes from the end surface of the first end cover 34 facing away from the first housing 1, and the first communication opening 341 is a first notch formed at the fourth end 372 of the rib 77 corresponding to the first guide passage 37; the above-described second communication port 342 is a second notch formed at the first end 381 of the rib 77 corresponding to the second guide passage 38.

As shown in fig. 4, an end surface of the first end cap 34 facing away from the first housing 1 forms a collection groove 6, and the collection groove 6 communicates with the annular space 4, the first communication port 341, and the second communication port 342. The collection groove 6 is located radially inward of the bead 77 and radially outward of the filter media. The bubbles in the annular space 4 move upward, and are firstly collected into the collecting groove 6, then flow into the second guide channel 38 through the first communicating port 341 and the second communicating port 342, and are discharged through the exhaust port 13, the regularity and the directionality of the rising movement of the bubbles are improved by the arrangement of the collecting groove 6, and the efficiency of discharging the bubbles is further improved.

To ensure that as many bubbles as possible are discharged from the annular space 4 and also to ensure the lengths of the second guide passage 38 and the first guide passage 37, the second guide passage 38 is curved to extend from the first end 381 thereof to the second end 382 along the outer edge of the first end cap 34, and the central angles of the first communication port 341 and the second communication port 342 are larger than 90 °. The first communication port 341 and the second communication port 342 are both communicated with the collecting groove 6, so that bubbles in the collecting groove 6 can be guided into the second guide channel 38 from respective corresponding positions, the included angle between the first communication port 341 and the second communication port 342 is larger than 90 degrees, the length difference between the two parts formed by separating the collecting groove 6 is not too large, and the flow rate of the bubbles in the collecting groove 6 to the second guide channel 38 through the two parts is more balanced.

As shown in fig. 2, 10 and 11, the side wall of the casing 32 of the filter element 3 forms a flow guiding rib 321 extending axially downward from the top end to the bottom end of the casing 32, the top end of the flow guiding rib communicates with the fourth end 372 of the first guiding channel 37, and the top end of the flow guiding rib and the end surface of the first end cap 34 facing away from the first housing 1 leave a gap 322, and the gap 322 communicates with the collecting groove 6. A diversion trench 21 is formed at a position of the second housing 2 corresponding to the diversion rib 321, and the end of the diversion rib 321 extends into the diversion trench 21. The flow guiding rib 321 can guide the feeding fluid to the bottom of the second casing 2, and the flow guiding rib 321 and the bubbles entrained in the raw material fluid in the flow guiding groove 21 move upward, can flow to the collecting groove 6 through the gap 322, and then flow to the exhaust port 13 through the first communicating port 341 and the second communicating port 342.

The foregoing detailed description is intended to illustrate and not limit the utility model, which is intended to be within the spirit and scope of the appended claims, and any changes and modifications that fall within the true spirit and scope of the utility model are intended to be covered by the following claims.

Claims

1. A filter capable of exhausting gas quickly comprises,

a first housing having an inlet, an outlet, and an exhaust;

the top end of the second shell is hermetically connected with the first shell;

the method is characterized in that: the filter element at least comprises a filter medium, a center rod, a first end cover and a second end cover which are hermetically connected with the two ends of the filter element, the first end cover is close to the first shell and forms a center hole penetrating through the thickness direction of the first end cover and a first communication port for communicating the inlet with the annular space, and the outlet is communicated with the hollow interior of the filter element through the center hole;

2. The rapidly ventable filter of claim 1, wherein: the first guide channel is provided with a third end and a fourth end, the third end is located on the inner side of the first end cover and the radial inner side of the first shell, the fourth end is located on the outer edge of the first end cover and the first shell, the bottom of the first guide channel extends downwards in an inclined mode from the third end to the fourth end, the inlet is arranged close to the third end, and the first guide channel is communicated with the second end of the second guide channel and the annular space at the fourth end.

3. The rapidly ventable filter according to claim 1 or 2, wherein: and at the communication position of the first guide channel and the second guide channel, the axial height of the bottom of the second guide channel is greater than that of the bottom of the first guide channel.

4. The rapidly ventable filter of claim 1, wherein: the second guide passage is provided with a partition for reducing a flow area of the second end of the second guide passage, the partition spacing the exhaust port from the first communication port.

5. The rapidly ventable filter of claim 4, wherein: the partition is located in the middle of the second guide passage, or the partition is connected to a side wall of the second guide passage.

6. The rapidly ventable filter of claim 1, wherein: the bottom of the second guide channel extends obliquely upwards from the first end to the second end; or the part of the bottom of the second guide channel close to the first end extends obliquely upwards, and the part of the bottom of the second guide channel close to the second end is equal in height.

7. The rapidly ventable filter of claim 1, wherein: the axial projection of the exhaust port is located in the second guide channel, and the exhaust port is arranged close to the second end of the second guide channel.

8. The rapidly ventable filter of claim 7, wherein: the top of the second guide channel forms a raised part which protrudes out of the outer surface of the first shell, and the exhaust port is located at the highest point in the axial direction of the raised part.

9. The rapidly ventable filter of claim 1, wherein: and a second communication port for communicating the second guide channel and the annular space is formed in the first end cover, a collection groove is formed in the end face of the first end cover, which is far away from the first shell, and the collection groove is communicated with the annular space, the first communication port and the second communication port.

10. The rapidly ventable filter of claim 9, wherein: the central angle of the first communicating port and the second communicating port is larger than 90 degrees.