CN211538900U

CN211538900U - Fume chamber with filtering capability

Info

Publication number: CN211538900U
Application number: CN201922243172.2U
Authority: CN
Inventors: 郭勇
Original assignee: Beijing Meiyinlai Laboratory Engineering Technology Co ltd
Current assignee: Beijing Meiyinlai Laboratory Engineering Technology Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-09-22
Anticipated expiration: 2029-12-12

Abstract

The utility model relates to the field of experimental equipment, in particular to a fume hood with a filtering function, it includes the body, the cavity has been seted up in the body, can dismantle the blast pipe of connection at body top and one end intercommunication cavity, one section vertical setting of blast pipe intercommunication body, it is uncovered to have seted up in the vertical section of blast pipe, the mounting bracket, the filter screen, apron and locking Assembly, the mounting bracket includes annular and clamping ring, the notch of annular sets up, the clamping ring can be put into the annular groove, the area of filter screen is greater than the circular area of annular, the clamping ring corresponds in the edge pressure notch of notch with the filter screen, the apron is the arc and can covers in uncovered department, locking Assembly is including fixing at the outstanding rack that just is located the uncovered one side of arc of apron arc and fixing the connecting piece on the blast pipe outer peripheral face, the output of connecting piece can be. The utility model has the characteristics of the macromolecule particulate matter carries out prefiltering and is convenient for change the filter screen.

Description

Fume chamber with filtering capability

Technical Field

The utility model relates to an experimental facilities field, in particular to fume chamber with filtering capability.

Background

At present, can produce some harmful gas and the granule of macromolecule when experimental in the laboratory, under general condition, can concentrate harmful gas and granule object and discharge the laboratory through using the fume chamber.

Present, be provided with the cavity on the fume chamber body, at the fixed blast pipe that is provided with the intercommunication cavity in the fume chamber top, the one end of blast pipe is connected on the fume chamber, and its other end is connected with the VOC filter, and the installation is provided with the dust removal net in the filter, and the dust removal net is mainly used for filtering macromolecular particulate matter.

The above prior art solutions have the following drawbacks: after using the fume chamber for a long time to exhaust, a large amount of particulate matters through fume chamber exhaust adhere on the net that removes dust, lead to removing dust easily and net the jam, owing to can not in time overhaul the filter and the process of maintaining the filter is comparatively loaded down with trivial details, so lead to the fume chamber can not effectively normally work.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a fume chamber with filtering capability has the characteristics of carrying out prefilter and being convenient for change the filter screen to the macromolecule particulate matter.

The above object of the present invention can be achieved by the following technical solutions: a fume hood with a filtering function comprises a body, wherein a cavity is arranged in the body, an exhaust pipe is detachably connected to the top of the body, one end of the exhaust pipe is communicated with the cavity, the exhaust pipe is vertically arranged with one section of the body communicated with the exhaust pipe, an opening is arranged on the vertical section of the exhaust pipe, the exhaust pipe also comprises a mounting rack, a filter screen, a cover plate and a locking component, the mounting rack comprises a ring groove and a pressing ring, the notch of the ring groove is arranged upwards and can be placed in the opening, the press ring can be placed in the groove opening of the annular groove, the area of the filter screen is larger than the circular area of the annular groove, the press ring corresponds to the groove opening and presses the edge of the filter screen into the groove opening, the apron is the arc and can covers in uncovered department, locking Assembly is including fixing at the protruding rack that just is located the uncovered one side of arc of apron arc and fixing the connecting piece on the blast pipe outer peripheral face, the output of connecting piece can be inserted between the tooth and the tooth of rack.

Through adopting above-mentioned technical scheme, after using fume chamber exhaust gas, the interior macromolecule particulate matter of gas can be effectively carried out preliminary filtering by the filter screen, and then can reduce the filter in the filter possibility that the filter screen is blockked up. After using the fume chamber for a long time, can remove locking Assembly to be connected of blast pipe and apron, and then can be convenient observe the filter screen on the mounting bracket, the filter screen can stable installation in the annular under the action of gravity of clamping ring self, after filtering more particulate matter on the filter screen, takes out the clamping ring from the annular, just can change the filter screen, and the process of changing the filter screen is comparatively simple, the operation of being convenient for.

The present invention may be further configured in a preferred embodiment as: the mounting bracket is provided with the multiunit, and the equal level of a plurality of annuluses sets up and the interval is fixed in the sunken one side of apron arc, the filter screen is provided with many and installs respectively on the multiunit mounting bracket.

Through adopting above-mentioned technical scheme, the multiunit mounting bracket is installed many filter screens, forms the multilayer filtration in the blast pipe, and then can filter macromolecule particulate matter better.

The present invention may be further configured in a preferred embodiment as: the outer diameter of the ring groove is consistent with the inner diameter of the exhaust pipe.

Through adopting above-mentioned technical scheme, can effectively increase the filter screen in the exhaust pipe to the area of gas contact, improve the efficiency of filtering macromolecular particulate matter.

The present invention may be further configured in a preferred embodiment as: the locking assemblies are provided with two groups, and the two racks are respectively fixed on two sides of the arc-shaped opening of the cover plate.

Through adopting above-mentioned technical scheme, two sets of locking Assembly can make apron and mounting bracket can the stable installation in the blast pipe, and the reinforcing reliability of using.

The present invention may be further configured in a preferred embodiment as: the connecting piece is including solid shell, baffle, fixed plate, inserted bar and spring, the shell is fixed on the blast pipe outer wall, and the both ends of shell are opening end and blind end respectively, the baffle activity sets up in the shell, the open end department at the shell is fixed to the fixed plate, the inserted bar wears to establish in proper order on blind end, baffle and the fixed plate of shell to with baffle fixed connection, the one end that the inserted bar is close to the baffle can be inserted on the rack, the spring is between compression state butt baffle and the fixed plate.

Through adopting above-mentioned technical scheme, during the use, the spring that is compression state can promote the baffle to the direction of rack all the time, makes ground baffle drive the inserted bar and insert on the rack, and then with apron stable mounting on the blast pipe, makes ground mounting bracket and filter screen can stably set up and filter gas in the blast pipe steadily.

The present invention may be further configured in a preferred embodiment as: the rack is set to be a helical rack, the tip of the helical tooth faces the cover plate, an inclined plane is formed by processing one end, close to the baffle, of the inserted bar, and the end, provided with the inserted bar, of the inclined plane is obliquely arranged towards the shell and faces the rack.

Through adopting above-mentioned technical scheme, continue to promote the apron to uncovered inside after corresponding uncovered the placing with the apron for the skewed tooth of rack takes place the butt with the inclined plane of inserted bar, and the inserted bar can drive the baffle automatically and carry out the secondary compression to the spring, and the inserted bar steps down the rack, and the spring of secondary compression can also promote the inserted bar and insert once more on the rack, and then a staff just can accomplish the installation work to the apron alone.

The present invention may be further configured in a preferred embodiment as: the inserted bar sets up to cylindrical rod-shaped structure, sets up jaggedly on the fixed plate, is fixed with the gag lever post on the inserted bar, the one end of gag lever post is passed the breach and is located the shell outside, and the other end is located the shell, and the length of gag lever post is greater than the inserted bar and inserts the length and the gag lever post of rack and can be located the shell outside completely.

Through adopting above-mentioned technical scheme, the gag lever post reciprocates in the breach for round bar shape inserted bar can not rotate at will, and then ensures that the inclined plane of inserted bar can be towards the rack all the time, when the staff need change the filter screen, the pulling inserted bar makes the gag lever post butt on the fixed plate, and then the inserted bar can not insert on the rack again, and the staff just can be in the back of removing the locking of connecting piece and rack to the apron, is convenient for take out the apron, simple structure, and is easy and simple to handle, does benefit to the staff and uses.

The present invention may be further configured in a preferred embodiment as: the cover plate is provided with four sealing strips made of flexible materials, and the four sealing strips are fixed on four side edges of the cover plate respectively.

Through adopting above-mentioned technical scheme, when the apron lid was on the uncovered of blast pipe, under the sealed effect of sealing strip, can strengthen apron and uncovered department's leakproofness, reduce the possibility that harmful gas leaked from the blast pipe, reduce the harm of harmful gas to the laboratory test personnel is healthy, do benefit to the testing personnel and use.

To sum up, the utility model discloses the beneficial technological effect of utensil does:

1. by arranging the opening, the mounting frame, the filter screen, the cover plate and the locking assembly, macromolecular particles in the gas can be effectively and primarily filtered by the filter screen, so that the possibility of blockage of the filter screen in the filter can be reduced, and the filter screen can be conveniently replaced;

2. by arranging a plurality of groups of mounting frames and a plurality of filter screens, multi-layer filtering is formed in the exhaust pipe, so that macromolecular particles can be better filtered;

3. the external diameter through setting up the annular is unanimous with the internal diameter of blast pipe, effectively increases the filter screen in the blast pipe to the area of gas contact, improves the efficiency of filtering macromolecular particulate matter.

Drawings

FIG. 1 is a schematic view of a fume hood with a filtering function;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 3 is a schematic view of the mating structure of the exhaust duct, mounting bracket, filter screen and cover plate;

fig. 4 is a schematic view showing a protruded structure of the connector.

In the figure, 1, a body; 11. an exhaust pipe; 2. a mounting frame; 21. a ring groove; 22. pressing a ring; 3. filtering with a screen; 4. a cover plate; 41. a handle; 42. a sealing strip; 5. a locking assembly; 51. a rack; 52. a connecting member; 521. a housing; 522. a fixing plate; 523. a baffle plate; 524. inserting a rod; 525. a spring; 526. a limiting rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the utility model discloses a fume chamber with filtering capability, including body 1, seted up the cavity in body 1, can dismantle the blast pipe 11 of connection at 1 top of body and one end intercommunication cavity, one section vertical setting of blast pipe 11 intercommunication body 1.

Referring to fig. 2 and 3, an opening with a radius of radian is formed in a vertical section of the exhaust pipe 11, the direction of the opening is perpendicular to the axial direction of the vertical section, the exhaust pipe further comprises a mounting frame 2, a filter screen 3, a cover plate 4 and a locking assembly 5, the mounting frame 2 comprises three groups of annular grooves 21 and pressing rings 22, notches of the annular grooves 21 are arranged upwards, the outer diameter of the annular groove 21 is consistent with the inner diameter of the exhaust pipe 11 and can be placed in the opening, the pressing rings 22 can be placed in the notches of the annular grooves 21, the area of the filter screen 3 is larger than the circular area of the annular groove 21 and is provided with three pieces, the three filter screens 3 are respectively placed on the notches of the three annular grooves 21, then the edges of the filter screen 3 are pressed into the notches by the corresponding grooves of the pressing rings 22, the filter screens 3 are relatively fixed, the cover plate 4 is an arc-shaped plate, the center of the circle of the cover plate is coincident with the axial center of the, the locking assemblies 5 are provided with two groups, each locking assembly 5 comprises a rack 51 which is fixed on one side of the arc-shaped opening of the cover plate 4 and protrudes in an arc shape and a connecting piece 52 which is fixed on the outer peripheral surface of the exhaust pipe 11, the teeth of the rack 51 are arranged upwards, and the output end of the connecting piece 52 is arranged downwards and can be inserted between the teeth of the rack 51.

Two sets of locking Assembly 5 can make apron 4 and mounting bracket 2 can stable installation in blast pipe 11, reinforcing reliability in utilization. After using the fume chamber for a long time, can remove locking Assembly 5 and be connected blast pipe 11 and apron 4, and then can be convenient observe filter screen 3 on the mounting bracket 2, filter screen 3 can stable mounting in annular 21 under the action of gravity of clamping ring 22 self, after straining more particulate matter on filter screen 3, take out clamping ring 22 from annular 21 in, just can change filter screen 3, the process of changing filter screen 3 is comparatively simple, the operation of being convenient for. After using fume chamber exhaust gas, macromolecule particulate matter can be effectively carried out preliminary filtering by filter screen 3 in the gas, and then can reduce the filter in the filter possibility that filter screen 3 is blockked up, under the condition that does not influence fume chamber and filter normal work, can effectively reduce the frequency of maintaining the number of times and changing filter screen 3 to the filter.

Referring to fig. 3, preferably, a C-shaped handle 41 is fixed on one side of the cover plate 4 away from the mounting frame 2, two ends of the handle 41 are fixed on the cover plate 4, and a worker holds the handle 41 to conveniently take and place the cover plate 4, so that the structure is simple and the use is convenient.

Still be provided with four sealing strips 42 made by flexible material on the apron 4, flexible material such as plastics, rubber etc. four sealing strips 42 are fixed respectively on four sides of apron 4, and when apron 4 lid was on the uncovered of blast pipe 11, under the sealing effect of sealing strip 42, can strengthen the leakproofness of apron 4 and uncovered department, reduce the possibility that harmful gas leaked from blast pipe 11 in, reduce the harm of harmful gas to the indoor test personnel is healthy, do benefit to the testing personnel and use.

Referring to fig. 4, the connecting element 52 includes a fixed housing 521, a baffle 523, a fixed plate 522, an insert rod 524 and a spring 525, the housing 521 is an internal hollow structure and is fixed on the outer wall of the exhaust pipe 11, two ends of the housing 521 are respectively an open end and a closed end, the open end is vertically arranged upwards, the baffle 523 is movably arranged in the housing 521, the fixed plate 522 is fixed at the open end of the housing 521, the insert rod 524 is vertically arranged and sequentially penetrates through the closed end of the housing 521, the baffle 523 and the fixed plate 522 are fixedly connected to the baffle 523, one end of the insert rod 524 close to the baffle 523 can be inserted into the rack 51, the spring 525 is in a compressed state and is located in the housing 521 and sleeved on the insert rod 524, and two ends of the spring 525 are respectively abutted to.

During the use, the spring 525 that is compression state can push baffle 523 to the direction of rack 51 all the time, makes ground baffle 523 drive inserted bar 524 and insert on rack 51, and then installs apron 4 on blast pipe 11 steadily, makes ground mounting bracket 2 and filter screen 3 can stably set up and filter gas steadily in blast pipe 11.

In actual use, because two sets of locking assemblies 5 are arranged to stably install the cover plate 4, when the cover plate 4 is installed on the exhaust pipe 11 and locked, an operator needs to pull the two inserting rods 524 in advance, so that after the inserting rods 524 give way to the racks 51, the other operator can place the cover plate 4 corresponding to the opening, because the exhaust pipe 11 is located at the top of the fume hood, it is inconvenient for the two operators to simultaneously operate and install the cover plate 4, therefore, the racks 51 and the inserting rods 524 are improved as follows, the racks 51 are arranged into the oblique racks 51, tips of oblique teeth face the cover plate 4, an inclined surface is formed on one end, close to the baffle 523, of the inserting rods 524, and the end, provided with the inserting rods 524, of the inclined surface is inclined towards the housing 521 and faces the racks 51. When installing apron 4, continue to promote apron 4 to uncovered inside after corresponding uncovered the placing with apron 4, make the skewed tooth of rack 51 and inserted bar 524's inclined plane take place the butt, under the low-level effect on skewed tooth and inclined plane, inserted bar 524 can drive baffle 523 automatically and carry out the secondary compression to spring 525, make inserted bar 524 give way to rack 51, the spring 525 of secondary compression can also promote inserted bar 524 and insert on rack 51 once more, and then a staff just can accomplish the installation work to apron 4 alone.

In order to facilitate the worker to dismantle the cover plate 4, the inserted link 524 is a cylindrical rod-shaped structure, a notch is formed in the position where the inserted link 524 movably penetrates through the fixing plate 522, a limiting rod 526 is fixedly arranged on the inserted link 524, the length direction of the limiting rod 526 is parallel to that of the inserted link 524, one end of the limiting rod 526 penetrates through the notch and is located outside the shell 521, the other end of the limiting rod 526 is located inside the shell 521, and the length of the limiting rod 526 is greater than that of the inserted link 524, wherein the inserted link 524 is inserted into the rack 51, and the limiting rod 526 can be completely located outside the shell 521.

Gag lever post 526 reciprocates in the breach, make round bar shape inserted bar 524 can not rotate at will, and then ensure that the inclined plane of inserted bar 524 can be towards rack 51 all the time, when the staff need change filter screen 3, pulling inserted bar 524 passes the one end of fixed plate 522 and makes gag lever post 526 be located the shell 521 completely outside then rotate inserted bar 524, make the tip and the breach of gag lever post 526 take place the dislocation, loosen behind the inserted bar 524, under the spring 525 spring action after the secondary compression, make gag lever post 526 butt on fixed plate 522, and then make the inserted bar 524 can not reinsert on rack 51, the staff just can be in the back of relieving the locking of connecting piece 52 and rack 51 to apron 4, be convenient for take out apron 4, moreover, the steam generator is simple in structure, and is easy and simple to handle, and is favorable to the staff to use.

The embodiment of this embodiment is the utility model discloses preferred embodiment is not according to this restriction the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a fume chamber with filtering capability, includes body (1), set up the cavity in body (1), can dismantle blast pipe (11) of connecting at body (1) top and one end intercommunication cavity, one section vertical setting of blast pipe (11) intercommunication body (1), its characterized in that: an opening is arranged on the vertical section of the exhaust pipe (11), and the exhaust pipe also comprises a mounting rack (2), a filter screen (3), a cover plate (4) and a locking component (5), the mounting rack (2) comprises a ring groove (21) and a pressing ring (22), the notch of the ring groove (21) is arranged upwards and can be placed in the open mouth, the press ring (22) can be placed in the groove opening of the ring groove (21), the area of the filter screen (3) is larger than the circular area of the ring groove (21), the press ring (22) is corresponding to the groove opening to press the edge of the filter screen (3) into the groove opening, the cover plate (4) is an arc-shaped plate and can cover the opening, the locking assembly (5) comprises a rack (51) which is fixed on the arc-shaped protrusion of the cover plate (4) and is positioned on one side of the arc-shaped opening and a connecting piece (52) which is fixed on the outer peripheral surface of the exhaust pipe (11), the output end of the connecting piece (52) can be inserted between the teeth of the rack (51).

2. A fume hood with filtering function according to claim 1, characterized in that: mounting bracket (2) are provided with the multiunit, and the equal level setting of a plurality of annular (21) and interval are fixed in the sunken one side of apron (4) arc, filter screen (3) are provided with many and install respectively on multiunit mounting bracket (2).

3. A fume hood with filtering function according to claim 2, characterized in that: the outer diameter of the ring groove (21) is consistent with the inner diameter of the exhaust pipe (11).

4. A fume hood with filtering function according to claim 1, characterized in that: the locking assemblies (5) are provided with two groups, and the two racks (51) are respectively fixed on two sides of the arc-shaped opening of the cover plate (4).

5. A fume chamber with filtering function according to claim 4, characterized in that: connecting piece (52) are including solid shell (521), baffle (523), fixed plate (522), inserted bar (524) and spring (525), shell (521) are fixed on blast pipe (11) outer wall, and the both ends of shell (521) are open end and closed end respectively, baffle (523) activity sets up in shell (521), open end department at shell (521) is fixed in fixed plate (522), inserted bar (524) wear to establish in proper order on closed end, baffle (523) and fixed plate (522) of shell (521) to with baffle (523) fixed connection, inserted bar (524) can be inserted on rack (51) near the one end of baffle (523), spring (525) are between compression state butt baffle (523) and fixed plate (522).

6. A fume chamber with filtering function according to claim 5, characterized in that: the rack (51) is set to be a helical rack (51), the tip of the helical tooth faces the cover plate (4), an inclined surface is formed at one end, close to the baffle plate (523), of the inserted rod (524), and the end, provided with the inserted rod (524), of the inclined surface is obliquely arranged towards the shell (521) and faces the rack (51).

7. A fume chamber with filtering function according to claim 6, characterized in that: the utility model discloses a rack, including the casing (521), inserted bar (524) sets up to cylindrical rod-shaped structure, sets up jaggedly on fixed plate (522), is fixed with gag lever post (526) on inserted bar (524), the one end of gag lever post (526) is passed the breach and is located casing (521) outside, and the other end is located casing (521), and the length of gag lever post (526) is greater than inserted bar (524) and inserts the length and gag lever post (526) of rack (51) and can be located casing (521) outside completely.

8. A fume hood with filtering function according to claim 1, characterized in that: four sealing strips (42) made of flexible materials are arranged on the cover plate (4), and the four sealing strips (42) are respectively fixed on four side edges of the cover plate (4).