CN218129649U - Non-return flame arrester - Google Patents

Abstract

The utility model discloses a non-return flame arrester relates to the spark arrester field, solves the problem that needs to adorn the check valve in addition on the pipeline. The fire-retardant fireproof door comprises an upper shell and a lower shell, wherein an outlet flow channel and an inlet flow channel are respectively arranged in the upper shell and the lower shell, the upper shell is fixedly arranged at the top of the lower shell, a fire-retardant plate is fixedly arranged in the upper shell, and a check device is arranged at the joint of the upper shell and the lower shell; the non-return device comprises a mounting seat and an opening and closing plate, a discharge channel communicated with the outlet flow channel and the inlet flow channel is formed in the mounting seat, and the opening and closing plate is arranged on the discharge channel in an elastic moving mode so as to open and close the discharge channel. The medium pressure pushes the opening and closing plate to enable the opening and closing plate to elastically open the discharge channel, then flame is prevented from spreading upwards through the fire retardant plate, the non-return device is additionally arranged in the fire retardant device, and the positions of the non-return devices are reasonably arranged, so that fire can be stopped, the medium can be prevented from flowing backwards, the medium is convenient to install in a pipeline, and occupied space of the pipeline is reduced.

Description

Non-return flame arrester

Technical Field

The utility model belongs to the technical field of the spark arrester and specifically relates to a non return type spark arrester.

Background

Flame arrestors are safety devices used to prevent the spread of flames of flammable gases and flammable liquid vapors and are commonly installed in pipelines used to transport flammable gases. In some pipelines, in order to prevent flammable gas or air from flowing back into the upstream pipeline, a check valve needs to be installed in the pipeline, which is troublesome to install, time-consuming and labor-consuming, and occupies a space in the pipeline.

Disclosure of Invention

The utility model aims at: in order to overcome the defects of the prior art, the utility model provides a non-return flame arrester, which solves the problem that a check valve is additionally arranged on a pipeline.

The technical scheme of the utility model: the fire-retardant fireproof door comprises an upper shell and a lower shell, wherein an outlet flow channel and an inlet flow channel are respectively arranged in the upper shell and the lower shell, the upper shell is fixedly arranged at the top of the lower shell, a fire-retardant plate is fixedly arranged in the upper shell, and a check device is arranged at the joint of the upper shell and the lower shell; the non-return device comprises a mounting seat and an opening and closing plate, a discharge channel communicated with the outlet flow channel and the inlet flow channel is formed in the mounting seat, and the opening and closing plate is arranged on the discharge channel in an elastic moving mode so as to open and close the discharge channel.

By adopting the technical scheme, the opening and closing plate is pressed by medium pressure, so that the opening and closing plate can elastically open the discharge channel, flame can be prevented from spreading upwards through the fire retardant plate, the non-return device is additionally arranged in the fire retardant device, the position of the non-return device is reasonably arranged, fire can be stopped, the medium can be prevented from flowing backwards, the installation in a pipeline is facilitated, and the occupied pipeline space is reduced.

The utility model discloses a further setting: the non-return device further comprises a center rod, a spring and a fixing frame, the top end of the center rod is fixedly penetrated through the opening and closing plate, the spring and the fixing frame are movably sleeved on the center rod, the opening and closing plate is located at the outlet position of the discharge channel, the fixing frame is fixed on the mounting seat at the inlet position of the discharge channel, and two ends of the spring are respectively pressed on the fixing frame and the bottom end of the center rod.

Adopt above-mentioned further setting, well core rod and mount are used for the direction of motion of spacing board that opens and shuts, make the board that opens and shuts remove along well core rod axial direction, and the spring is equivalent to exert pressure in the board that opens and shuts in the elasticity of escape way entry position, can guide the board that opens and shuts quick return and close escape way, promotes non return reaction rate.

The utility model discloses a further setting again: the right-angle grooves are respectively formed in the joint of the upper shell and the lower shell, the mounting seat is flat, and the outer edge of the mounting seat is tightly pressed in the right-angle grooves between the upper shell and the lower shell.

Adopt above-mentioned further setting again, but right angle groove spacing location mount pad goes up the casing and can realize the installation location to the mount pad through the right angle groove when casing equipment is accomplished down, and the holistic equipment of being convenient for reduces the equipment degree of difficulty.

The utility model discloses a still further set up: the opening and closing plate is provided with a surfacing layer, and the surfacing layer is in sealing fit with the outlet of the discharge channel.

By adopting the above further setting, the sealing performance of the non-return device is increased by the surfacing layer, and the non-return effect is improved.

The utility model discloses a still further set up: the fire retardant plates are at least two layers and are arranged in a stacked manner along the axial direction of the upper shell.

By adopting the above further arrangement, the multilayer fire retardant plate can improve the fire retardant effect.

The utility model discloses a still further set up: the upper shell and the lower shell are connected through a stud thread.

By adopting the above further arrangement, the assembly is convenient, and the processing is convenient.

Drawings

Fig. 1 is a cross-sectional view of the closed state of the present invention;

fig. 2 is a sectional view of the open state of the present invention;

wherein, 1, an upper shell; 2. a lower housing; 11. an outlet flow channel; 12. an inlet flow channel; 3. a fire barrier plate; 4. a non-return device; 41. a mounting seat; 42. a shutter plate; 411. a discharge passage; 43. a center pole; 44. a spring; 45. a fixed mount; 11. a right-angle groove; 421. overlaying a welding layer; 12. a stud.

Detailed Description

As shown in fig. 1 and 2, the non-return flame arrester comprises an upper shell 1 and a lower shell 2, wherein an outlet flow passage 11 and an inlet flow passage 12 are respectively arranged in the upper shell 1 and the lower shell 2, the upper shell 1 is fixedly installed at the top of the lower shell 2, and a medium flows into the upper shell 1 from the lower shell 2 and flows out. A fire retardant plate 3 is fixedly arranged in the upper shell 1, and a check device 4 is arranged at the joint of the upper shell 1 and the lower shell 2; the check device 4 includes an installation seat 41 and a opening/closing plate 42, a discharge passage 411 communicating the outlet flow passage 11 and the inlet flow passage 12 is opened on the installation seat 41, and the opening/closing plate 42 is elastically movably disposed on the discharge passage 411 to open and close the discharge passage 411. Fire retardant board 3 is located the low reaches of non return device 4, and the medium flows into from inlet flow path 12, and medium pressure acts on opening and closing board 42, and opening and closing board 42 atress elasticity opens discharge passage 411, and medium is upwards behind fire retardant board 3, and flame is because fire retardant board 3 back of stopping burning, and flame extinguishes, and the medium then discharges outlet flow path 11. For the installation of prior art spark arrester and check valve, the utility model discloses having integrated spark arrester and non return device 4, enough satisfying the demand of pipeline back-fire relief and non return, and having reduced installation space comparatively speaking, saved installation procedure.

The check device 4 further comprises a center rod 43, a spring 44 and a fixing frame 45, the top end of the center rod 43 is fixedly penetrated through the opening and closing plate 42, the spring 44 and the fixing frame 45 are movably sleeved on the center rod 43, the opening and closing plate 42 is located at the outlet position of the discharge passage 411, namely, at the position above the mounting seat 41 in the drawing, the fixing frame 45 is fixed on the mounting seat 41 at the inlet position of the discharge passage 411, namely, at the position below the mounting seat 41 in the drawing, the fixing frame 45 is of a frame structure, and basically does not hinder the medium passing of the discharge passage 411; two ends of the spring 44 respectively press against the fixed frame 45 and the bottom end of the central rod 43. The opening and closing plate 42 is tightly attached to the top surface of the mounting seat 41 to close the discharge passage 411, the spring 44 is in a loose state, and the check device 4 is in a closed state; the medium pressure is increased, and gradually presses against the opening and closing plate 42, under the fixed limit of the fixed frame 45, the central rod 43 and the opening and closing plate 42 can only move along the axial direction of the central rod 43, so that the opening and closing plate 42 is stressed to rise, the discharge channel 411 is opened, the spring 44 is stressed and compressed, and the non-return device 4 is in an opening state at the moment; if the medium pressure is reduced or disappeared, the spring 44 returns to the original state, and the opening and closing plate 42 descends to return, and gradually closes the discharge passage 411.

Right-angle groove 11 has been seted up respectively to the seam punishment of going up casing 1 and casing 2 down, and mount pad 41 is flat-plate-like, and the outer fringe of mount pad 41 is pressed tightly in right-angle groove 11 between last casing 1 and casing 2 down, and mount pad 41 is equivalent to the centre gripping between last casing 1 and casing 2 down, and mount pad 41 or even whole non return device 4 can conveniently adorn in right-angle groove 11.

The build-up layer 421 is disposed on the opening and closing plate 42, and the build-up layer 421 is in sealing fit with the outlet of the discharge passage 411 to enhance the sealing performance.

The fire retardant plates 3 are at least two layers, each layer of the fire retardant plates 3 are arranged in a stacked mode along the axial direction of the upper shell 1, and the fire retardant effect can be enhanced through the multiple layers of the fire retardant plates 3.

The upper shell 1 and the lower shell 2 are connected through a screw bolt 12 in a threaded manner, and the screw bolt 12 is screwed into the upper shell 1 and the lower shell 2 for fastening.

Claims (6)

1. A check type spark arrester which characterized in that: the flame-retardant fireproof door comprises an upper shell and a lower shell, wherein an outlet flow channel and an inlet flow channel are respectively arranged in the upper shell and the lower shell, the upper shell is fixedly arranged at the top of the lower shell, a flame-retardant board is fixedly arranged in the upper shell, and a check device is arranged at the joint of the upper shell and the lower shell; the non-return device comprises a mounting seat and a starting and closing plate, a discharge channel communicated with the outlet flow channel and the inlet flow channel is formed in the mounting seat, and the starting and closing plate is elastically movably arranged on the discharge channel to start and close the discharge channel.

2. A check-type flame arrestor as defined in claim 1 wherein: the non-return device further comprises a center rod, a spring and a fixing frame, the top end of the center rod is fixedly penetrated through the opening and closing plate, the spring and the fixing frame are movably sleeved on the center rod, the opening and closing plate is located at the outlet position of the discharge channel, the fixing frame is fixed on the mounting seat at the inlet position of the discharge channel, and two ends of the spring are respectively pressed on the fixing frame and the bottom end of the center rod.

3. A check-type flame arrestor as defined in claim 1 or 2 wherein: the joint of the upper shell and the lower shell is respectively provided with a right-angle groove, the mounting seat is flat, and the outer edge of the mounting seat is tightly pressed in the right-angle groove between the upper shell and the lower shell.

4. A check-type flame arrestor as defined in claim 1 or 2, wherein: and the opening and closing plate is provided with a surfacing layer, and the surfacing layer is in sealing fit with the outlet of the discharge channel.

5. A check-type flame arrestor as defined in claim 1 or 2 wherein: the fire retardant plates are at least two layers and are arranged in a stacked mode along the axial direction of the upper shell.

6. A check-type flame arrestor as defined in claim 1 or 2, wherein: the upper shell and the lower shell are connected through stud threads.

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