CN212957452U

CN212957452U - Exhaust device for preventing gas from flowing backwards

Info

Publication number: CN212957452U
Application number: CN202020989901.9U
Authority: CN
Inventors: 迟邦昊
Original assignee: Chengdu Tuoland Gas Co ltd
Current assignee: Chengdu Tuoland Gas Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-04-13
Anticipated expiration: 2030-06-03

Abstract

The utility model discloses an exhaust apparatus for preventing gaseous backward flow, which comprises an outer shell, the top rigid coupling of shell has the long slab, the spout has all been processed to the top left and right sides of long slab, fixed establishment is installed at the top of long slab, fixed establishment includes threaded rod, notch board, handle, first short slab, swash plate, second short slab and bent plate, the bottom of threaded rod is rotated with the top of long slab and is linked to each other. Control the bent plate through fixed establishment and remove, realized being connected with external support equipment, increased and supported the device center, prevented the tenesmus, it is not hard up to have prevented both sides junction, gas leakage has been avoided, normal use has been ensured, through the quarter butt among the exhaust mechanism, the cooperation of bent piece and spring has formed the check valve, can prevent completely that gas from flowing backward, the practicality is improved, peg graft with external pipeline notch, connection stability has been improved, prevent to damage and drop, saved the trouble from new installation, and easy operation, and the promotion is convenient for.

Description

Exhaust device for preventing gas from flowing backwards

Technical Field

The utility model relates to a prevent gaseous exhaust apparatus technical field who flows backward specifically is a prevent gaseous exhaust apparatus who flows backward.

Background

The exhaust duct is a chimney which is installed in a kitchen and a toilet of a house and intensively discharges smoke to send the smoke to an external space, and is matched with an exhaust device for preventing gas from flowing backwards for use.

For example, the exhaust device for preventing gas from flowing backwards of patent number "201420325746.5" mainly comprises a main exhaust pipe and a branch exhaust pipe, wherein the branch exhaust pipe has a large pressure difference between an inlet and an outlet of an exhaust body, the reverse flow resistance is strong, the gravity of the central position is large when the existing exhaust device for preventing gas from flowing backwards is used, the exhaust device for preventing gas from flowing backwards easily and naturally drops for a long time, the joints at two sides are not flexible, gas leakage is caused, normal use is influenced, meanwhile, the reverse flow resistance is strong, the exhaust device can not be completely prevented, the practicability is reduced, meanwhile, the two sides of a pipeline are simple to connect, the exhaust device is easy to damage and drop, and the exhaust device needs to be newly installed, is too troublesome.

Disclosure of Invention

An object of the utility model is to provide an exhaust apparatus who prevents gaseous flowing backward to central point puts gravity great when proposing the exhaust apparatus who prevents gaseous flowing backward and uses among the solution above-mentioned background art, and long-time easy nature is tenesmus, causes the junction of both sides not hard up, leads to gas leakage, influences the problem of normal use.

In order to achieve the above object, the utility model provides a following technical scheme: an exhaust device for preventing gas from flowing backwards comprises a shell, wherein a long plate is fixedly connected to the top of the shell, sliding grooves are formed in the left side and the right side of the top of the long plate, and a fixing mechanism is installed on the top of the long plate;

the fixing mechanism comprises a first threaded rod, a concave plate, a handle, a first short plate, an inclined plate, a second short plate and a bent plate;

the bottom of first threaded rod rotates with the top of long slab and links to each other, the outer wall top of first threaded rod and the inner wall threaded connection of concave plate, the top of first threaded rod and the bottom rigid coupling of handle, the left and right sides of concave plate respectively with the inboard looks rigid coupling of first short slab, two the front of first short slab rotates with the top of swash plate respectively and links to each other, two the bottom of swash plate rotates with the front of second short slab respectively and links to each other, two the outside of second short slab respectively with the inboard below looks rigid coupling of bent plate. The left and right movement of the bent plate is controlled to be fixedly connected with external supporting equipment.

Preferably, the bottoms of the two bent plates are respectively in sliding clamping connection with the inner walls of the two sliding grooves. The bent plate is stressed to slide left and right through the inner wall of the sliding groove.

Preferably, the first threaded rod and the concave plate form a lifting mechanism. The first threaded rod rotates to drive the concave plate to move up and down.

Preferably, an exhaust mechanism is installed inside the housing;

the exhaust mechanism comprises a vertical rod, a short rod, a bent block and a first spring;

the upper and lower both sides of montant respectively with the right side notch upper and lower both sides looks rigid coupling of shell, the left side of montant and the right side looks rigid coupling of quarter butt, the outer wall left side of quarter butt and the inner wall clearance fit of bent piece, the outer wall left side of quarter butt and the inner wall right side rigid coupling of first spring, the left side of first spring and the inner wall left side looks rigid coupling of bent piece, the left side of bent piece offsets tightly with the inner wall left side of shell. The whole body forms a one-way valve to prevent gas from flowing backwards.

Preferably, the short rod, the crank block and the first spring form an elastic mechanism. The bent block is rebounded by the first spring after being forced to move.

Preferably, the left side and the right side of the shell are both communicated with pipelines, the upper outer side and the lower outer side of the outer walls of the two pipelines are both fixedly connected with bent plates, and the outer sides of the bent plates are both provided with connecting mechanisms;

the connecting mechanism comprises a bracket, a straight rod, a sleeve plate, a second spring, a circular ring, a square block, a transverse plate, a second threaded rod and a bottom plate;

the bottom of the support is fixedly connected with the right side of the top of the curved plate, the top of the support is in clearance fit with the outer wall of the straight rod, the lower portion of the outer wall of the straight rod is fixedly connected with the inner wall of the sleeve plate, the outer wall of the straight rod is sleeved with the inner wall of the second spring, the upper side and the lower side of the second spring are fixedly connected with the bottom of the support and the top of the sleeve plate respectively, the top of the straight rod is fixedly connected with the bottom of the circular ring, the bottom of the straight rod is rotatably connected with the front of the square block, the left side of the square block is fixedly connected with the right side of the transverse plate, the inner wall of the transverse plate is in threaded connection with the inner wall of the second threaded rod. And controlling the position of the bottom plate to connect the pipeline with an external pipeline.

Preferably, the right side of the square block is attached to the left side of the curved plate. The square block is forced to move up and down along the left side of the curved plate.

Preferably, the transverse plate, the second threaded rod and the bottom plate form an adjusting mechanism. The second threaded rod rotates to drive the bottom plate to move up and down, so that the position height of the bottom plate is adjusted.

Compared with the prior art, the beneficial effects of the utility model are that: the exhaust device for preventing gas from flowing backwards.

The fixed mechanism controls the bent plate to move left and right, so that the device is connected with external supporting equipment, the central support of the device is increased, the falling is prevented, the connection parts at two sides are prevented from loosening, the gas leakage is avoided, and the normal use is ensured.

Through short rod among the exhaust mechanism, the cooperation of bent piece and spring has formed the check valve, can prevent completely that gas from flowing backward, has improved the practicality.

The bottom plate is controlled to move up and down through the connecting mechanism and is connected with the notch of an external pipeline in an inserting mode, the connection stability is improved, the damage and the falling off are prevented, the trouble of new installation is eliminated, the operation is simple, and the popularization is convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection between the threaded rod, the concave plate and the grip of FIG. 1;

FIG. 3 is a schematic view of the connection structure of the bracket, the straight rod and the strap in FIG. 1;

fig. 4 is a schematic view of the connection structure of the square block, the cross plate and the threaded rod in fig. 1.

In the figure: 1. the device comprises a shell, 2, a fixing mechanism, 201, a first threaded rod, 202, a concave plate, 203, a handle, 204, a first short plate, 205, an inclined plate, 206, a second short plate, 207, a bent plate, 3, an exhaust mechanism, 301, a vertical rod, 302, a short rod, 303, a bent block, 304, a first spring, 4, a connecting mechanism, 401, a support, 402, a straight rod, 403, a sleeve plate, 404, a second spring, 405, a circular ring, 406, a square block, 407, a transverse plate, 408, a second threaded rod, 409, a bottom plate, 5, a long plate, 6, a sliding groove, 7, a pipeline, 8 and a bent plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an exhaust device for preventing gas from flowing backwards comprises a shell 1, a long plate 5 is fixedly connected to the top of the shell 1, sliding grooves 6 are formed in the left side and the right side of the top of the long plate 5, a fixing mechanism 2 is installed on the top of the long plate 5, the fixing mechanism 2 comprises a first threaded rod 201, a concave plate 202, a handle 203, a first short plate 204, an inclined plate 205, a second short plate 206 and a bent plate 207, the bottom of the first threaded rod 201 is rotatably connected with the top of the long plate 5, the first threaded rod 201 is stressed to rotate through a bearing at the top of the long plate 5, the upper portion of the outer wall of the first threaded rod 201 is in threaded connection with the inner wall of the concave plate 202, the top of the first threaded rod 201 is fixedly connected with the bottom of the handle 203, the handle 203 facilitates rotation of the first threaded rod, the left side and the right side of the concave plate 202 are respectively fixedly connected with the inner sides of the first short plates 204, the front faces of the two first short plates 204 are respectively rotatably connected with the top of the, the bottoms of the two inclined plates 205 are respectively connected with the front face of the second short plate 206 in a rotating mode, the bottom of each inclined plate 205 is stressed to rotate through a pin shaft on the front face of the second short plate 206, the outer sides of the two second short plates 206 are respectively fixedly connected with the lower portion of the inner side of the bent plate 207, the bottoms of the two bent plates 207 are respectively connected with the inner walls of the two sliding grooves 6 in a sliding and clamping mode, the bent plates 207 are stressed to slide left and right through the inner walls of the sliding grooves 6, the first threaded rod 201 and the concave plate 202 form a lifting mechanism, and the first threaded rod 201 rotates to drive the concave plate 202.

The exhaust mechanism 3 is arranged in the shell 1, the exhaust mechanism 3 comprises a vertical rod 301, a short rod 302, a curved block 303 and a first spring 304, the upper side and the lower side of the vertical rod 301 are fixedly connected with the upper side and the lower side of a right side notch of the shell 1 respectively, the left side of the vertical rod 301 is fixedly connected with the right side of the short rod 302, the left side of the outer wall of the short rod 302 is in clearance fit with the inner wall of the curved block 303, the curved block 303 is stressed to move left and right through the outer wall of the short rod 302, the left side of the outer wall of the short rod 302 is fixedly connected with the right side of the inner wall of the first spring 304, the left side of the first spring 304 is fixedly connected with the left side of the inner wall of the curved block 303, the curved block 303 is rebounded through the first spring 304 after being stressed to move, the left side of the curved block 303 is tightly abutted against the left side of the inner wall of the shell 1, the short rod 302, the curved block 303, the outer sides of the curved plates 8 are respectively provided with a connecting mechanism 4, each connecting mechanism 4 comprises a support 401, a straight rod 402, a sleeve plate 403, a second spring 404, a circular ring 405, a square block 406, a transverse plate 407, a second threaded rod 408 and a bottom plate 409, the bottom of the support 401 is fixedly connected with the right side of the top of the curved plate 8, the top of the support 401 is in clearance fit with the outer wall of the straight rod 402, the straight rod 402 is stressed to move up and down through the top of the support 401, the lower part of the outer wall of the straight rod 402 is fixedly connected with the inner wall of the sleeve plate 403, the outer wall of the straight rod 402 is sleeved with the inner wall of the second spring 404, the upper side and the lower side of the second spring 404 are fixedly connected with the bottom of the support 401 and the top of the sleeve plate 403 respectively, the straight rod 402 is stressed to move and then rebounded through the second spring 404, the top of the circular ring 405 is fixedly connected with the bottom of the straight rod 402, the left side of the square 406 is fixedly connected with the right side of the transverse plate 407, the inner wall of the transverse plate 407 is in threaded connection with the inner wall of the second threaded rod 408, the second threaded rod 408 is stressed to rotate up and down through the inner wall of the transverse plate 407, the bottom of the second threaded rod 408 is fixedly connected with the top of the bottom plate 409, the right side of the square 406 is attached to the left side of the curved plate 8, the transverse plate 407, the second threaded rod 408 and the bottom plate 409 form an adjusting mechanism, and the second threaded rod 408 rotates to drive the bottom plate 409 to move up and down, so that the position height of.

In this example, when the device is used, the top bending plate 207 is inserted into the external supporting device, then the handle 203 is rotated to drive the first threaded rod 201 to rotate, the first threaded rod 201 which is rotated drives the concave plate 202 to move downwards, so that the first short plate 204 drives the inclined plate 205 to rotate downwards, the bent plate 207 slides outwards on the inner wall of the chute 6 when the inclined plate 205 is rotated through the second short plate 206, the handle 203 stops rotating after the external supporting device is clamped by the two bending plates 207, then the straight rod 402 is pulled outwards through the ring 405, so that the block 406 is driven to move upwards along the curved plate 8, so that the second threaded rod 408 is driven to move outwards through the transverse plate 407, the bottom plate 409 is driven to move outwards, then the external pipeline is inserted into the interior of the pipeline 7, then the ring 405 is released, the second spring 404 provides a resilience force, so that the block 406 returns to the original position along the curved plate 8, and then second threaded rod 408 takes bottom plate 409 and external pipeline notch about to peg graft mutually to make pipeline 7 and external pipeline connect stably, gaseous entering is pushed open bent piece 303 to the right side on the left side, thereby discharges on the right side, and first spring 304 provides elasticity afterwards and makes bent piece 303 and shell 1's inner wall left side support tightly, prevents that gaseous flowing backward.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An exhaust device for preventing gas from flowing backward, comprising a housing (1), characterized in that: a long plate (5) is fixedly connected to the top of the shell (1), sliding grooves (6) are formed in the left side and the right side of the top of the long plate (5), and a fixing mechanism (2) is mounted on the top of the long plate (5);

the fixing mechanism (2) comprises a first threaded rod (201), a concave plate (202), a handle (203), a first short plate (204), an inclined plate (205), a second short plate (206) and a bent plate (207);

the bottom of first threaded rod (201) rotates with the top of long board (5) and links to each other, the outer wall top of first threaded rod (201) and the inner wall threaded connection of concave plate (202), the top of first threaded rod (201) and the bottom rigid coupling of handle (203), the left and right sides of concave plate (202) respectively with the inboard looks rigid coupling of first short slab (204), two the front of first short slab (204) rotates with the top of swash plate (205) respectively and links to each other, two the bottom of swash plate (205) rotates with the front of second short slab (206) respectively and links to each other, two the outside of second short slab (206) respectively with the inboard below rigid coupling of bent plate (207).

2. A gas discharge apparatus for preventing gas from flowing backward as claimed in claim 1, wherein: the bottoms of the two bent plates (207) are respectively in sliding clamping connection with the inner walls of the two sliding grooves (6).

3. A gas discharge apparatus for preventing gas from flowing backward as claimed in claim 1, wherein: the first threaded rod (201) and the concave plate (202) form a lifting mechanism.

4. A gas discharge apparatus for preventing gas from flowing backward as claimed in claim 1, wherein: an exhaust mechanism (3) is arranged in the shell (1);

the exhaust mechanism (3) comprises a vertical rod (301), a short rod (302), a curved block (303) and a first spring (304);

the upper and lower both sides of montant (301) respectively with the right side notch upper and lower both sides looks rigid coupling of shell (1), the left side of montant (301) and the right side looks rigid coupling of quarter butt (302), the outer wall left side of quarter butt (302) and the inner wall clearance fit of bent piece (303), the outer wall left side of quarter butt (302) and the inner wall right side rigid coupling of first spring (304), the left side of first spring (304) and the inner wall left side rigid coupling of bent piece (303), the left side of bent piece (303) offsets tightly with the inner wall left side of shell (1).

5. The exhaust apparatus for preventing gas from flowing backward as claimed in claim 4, wherein: the short rod (302), the bent block (303) and the first spring (304) form an elastic mechanism.

6. A gas discharge apparatus for preventing gas from flowing backward as claimed in claim 1, wherein: the left side and the right side of the shell (1) are both communicated with pipelines (7), the upper outer side and the lower outer side of the outer walls of the two pipelines (7) are both fixedly connected with bent plates (8), and the outer sides of the bent plates (8) are both provided with connecting mechanisms (4);

the connecting mechanism (4) comprises a support (401), a straight rod (402), a sleeve plate (403), a second spring (404), a circular ring (405), a square block (406), a transverse plate (407), a second threaded rod (408) and a bottom plate (409);

the bottom of the bracket (401) is fixedly connected with the right side of the top of the curved plate (8), the top of the bracket (401) is in clearance fit with the outer wall of the straight rod (402), the lower part of the outer wall of the straight rod (402) is fixedly connected with the inner wall of the sleeve plate (403), the outer wall of the straight rod (402) is sleeved with the inner wall of the second spring (404), the upper side and the lower side of the second spring (404) are respectively fixedly connected with the bottom of the bracket (401) and the top of the sleeve plate (403), the top of the straight rod (402) is fixedly connected with the bottom of the circular ring (405), the bottom of the straight rod (402) is rotatably connected with the front of the square block (406), the left side of the square block (406) is fixedly connected with the right side of a transverse plate (407), the inner wall of the transverse plate (407) is in threaded connection with the inner wall of the second threaded rod (408), the bottom of the second threaded rod (408) is fixedly connected with the top of the bottom plate (409).

7. The exhaust apparatus for preventing gas from flowing backward as claimed in claim 6, wherein: the right side of the square block (406) is attached to the left side of the curved plate (8).

8. The exhaust apparatus for preventing gas from flowing backward as claimed in claim 6, wherein: the transverse plate (407), the second threaded rod (408) and the bottom plate (409) form an adjusting mechanism.