CN104075326A

CN104075326A - Venturi gas mixer

Info

Publication number: CN104075326A
Application number: CN201410223071.8A
Authority: CN
Inventors: 邵信宏
Original assignee: DALIAN BORN SCIENCE & TECHNOLOGY Co Ltd
Current assignee: DALIAN BORN SCIENCE & TECHNOLOGY Co Ltd
Priority date: 2014-05-26
Filing date: 2014-05-26
Publication date: 2014-10-01
Anticipated expiration: 2034-05-26
Also published as: CN104075326B

Abstract

The invention discloses a Venturi gas mixer. The outer side wall of a base shell is provided with a gas tube communicated with the inside thereof; the base shell is connected with a reducing tube through a flange, wherein the reducing tube is coaxial with the base shell, the diameter of the upper nozzle is larger than that of the lower nozzle, the upper nozzle of the reducing tube extends out of the upper opening of the base shell, and the lower nozzle enters the base shell; a frustum-shaped mouth ring is arranged in the base shell near the lower opening thereof, the upper part of the reducing tube is connected with an L-shaped gas inlet tube through a flange, and one nozzle of the gas inlet tube is coaxial with the reducing tube; an inner plug is arranged in the reducing tube, a connecting piece in thread connection with the reducing tube on the outer side wall thereof supports the inner plug, the inner plug is provided with a vertical regulating screw rod, and the top end of the regulating screw rod extends out of the gas inlet tube and is connected with the gas inlet tube wall through threads. Compared with the prior art, the Venturi gas mixer has advantages that the gas inlet amount is adjustable, the linear mixing range of the air and gas is large, the mixing performance is good, the gas flow speed is fast and the like.

Description

A kind of venturi fuel gas mixer

technical fieldthe present invention relates to a kind of gas mixer, relate in particular to a kind of venturi fuel gas mixer.

background technologyat present, venturi fuel gas mixer is to be applied in heating system, cooling device, in hot water facility and various stove equipment, realize the important device of air and combustion gas mixing, the form of necking pipe of substantially taking existing venturi mixer realizes air and mixes with the effective of combustion gas, the fuel gas mixer of this necking pipe structure exists deficiency when practical application: air is by necking pipe endoporus, the negative pressure producing at necking pipe reducing outward flange is too little, cause the changes in flow rate of air to cause that gas flow excursion is too little, and circulation of air mouth of pipe cross section is constant, air mass flow is uncontrollable, air reduces than scope with the linear hybrid of combustion gas, the debugging of combustion apparatus, serviceability reduces.

summary of the inventionthe object of the present invention is to provide a kind of air inflow adjustable, the linear blend range of air and combustion gas is large, good mixing property, and gas flow rate is fast, is convenient to the debugging of equipment, greatly improves the venturi fuel gas mixer of combustion apparatus serviceability.

A venturi fuel gas mixer, mainly includes base shell, Gas Pipe, choma, necking pipe, air inlet pipe, interior plug, connector and adjusting screw(rod), and described base shell is equal hollow housing of opening up and down, establishes the Gas Pipe being connected with its inside on its lateral wall; Coaxial and upper orifice diameter is greater than the straight tube of lower nozzle diameter with it on described base shell, by flange, to connect one, i.e. necking pipe, and the upper orifice of this necking pipe stretches out the upper shed of base shell, and lower nozzle stretches in base shell; Near its under shed position, is provided with the annulus that is frustum-like shape in described base shell, i.e. choma, the lateral wall root of this choma and the inwall of base shell link together, and the top of described choma and the bottom of necking pipe have gap; The top of above-mentioned necking pipe connects a L-type bend pipe by flange, i.e. air inlet pipe, and mouth of pipe and the necking pipe of this air inlet pipe coaxially arrange; In above-mentioned necking pipe, be provided with interior plug, this interior plug supports by the connector being threaded with necking pipe on its lateral wall, in described, be provided with a vertical adjusting screw(rod) beyond the Great Wall, the top of this adjusting screw(rod) is stretched out described air inlet pipe and is together by a threaded connection with air inlet pipe tube wall.

On described adjusting screw(rod) and be positioned at the outer attaching nut of air inlet pipe, in guaranteeing, the more stable and screw rod of plug is spacing.

Best, the cross section of described interior plug is circular.

Best, along described base shell upper shed edge, establish cannelure, in cannelure, establish sealing ring.

The upper shed diameter of described choma is greater than the lower nozzle diameter of necking pipe.

Air inlet pipe of the present invention for example, is introduced necking pipe by a kind of gas (air), in two mouths of pipe of necking pipe, the air inlet of the upper orifice that diameter is large, the lower nozzle that diameter is little is given vent to anger, upper orifice place gas flow rate is lower, it is higher that lower nozzle (reducing) is located gas flow rate, for increasing gas flow rate in necking pipe, installs interior plug additional to dwindle the cross section of lower nozzle (reducing) in necking pipe; In addition, interior plug can move along its axis adjusting in necking pipe, can change the flow that enters necking pipe gas like this, necking pipe outside is connected by the sealing of flange seam with base shell, air inlet pipe, can guarantee overall tightness, when necking pipe lower nozzle (reducing) outer edge and choma edge formation circumferential weld, another kind of gas (for example combustion gas) enters base shell by Gas Pipe, after mixing, from base shell under shed, flows out from circumferential weld flows out with gas in necking pipe.

The present invention compared with prior art tool has the following advantages:

1, greatly improve device internal gas blend range, can be according to actual conditions adjusting gas flow and flow velocity, thus the mixed proportion between adjustments of gas;

2, increase gas flow rate mixed performance is improved, especially, after air and combustion gas mixing, mixed effect strengthens, and sufficient combustion, complete reduces gas waste;

3, be convenient to according to the debugging of the actual power of the equipment such as heating, cooking stove, debugging scope is large, and controllability is strong, and flexible operation improves equipment operating efficiency, reduces device fabrication cost;

4, simple structure, cost of manufacture is cheap, long service life, applied range, energy-conservation, efficient.

accompanying drawing explanationfig. 1 is that master of the present invention looks generalized section.

Fig. 2 is the A-A view of Fig. 1.

the specific embodimentnext just by reference to the accompanying drawings the present invention is elaborated

A kind of venturi fuel gas mixer, as depicted in figs. 1 and 2, base shell 1 is for all opening and cross section are circular hollow housing up and down, on its lateral wall, be bolted the Gas Pipe 2 being connected with its inside, coaxial and upper orifice diameter is greater than the straight tube of lower nozzle diameter with it on base shell, to connect one, it is necking pipe 3, this necking pipe is comprised of two sections of pipes that are connected as a single entity, epimere pipe 3-1 is equal pipe, its external diameter is identical with the internal diameter of base shell, the lower end of epimere pipe connects hypomere pipe 3-2, hypomere pipe is the reduced pipe that upper orifice diameter is greater than lower nozzle diameter, its upper orifice diameter is identical with the internal diameter of epimere pipe, the upper shed that the upper orifice of described necking pipe (upper orifice of epimere pipe) stretches out base shell, lateral wall at the epimere pipe extension of necking pipe is established the ring flange 111 being connected as a single entity with it near apical position, the upper surface of this ring flange 111 is concordant with the upper surface of necking pipe, the lateral wall of described base shell is established the ring flange 112 being connected as a single entity with it near apical position, the lower surface of the upper surface of this ring flange 112 and above-mentioned ring flange 111 joins, the lower nozzle of described necking pipe (lower nozzle of hypomere pipe) stretches in base shell, along described base shell upper shed edge, establish cannelure, in cannelure, establish sealing ring 4, in described base shell, close its under shed position is established to be connected as a single entity with it and is the annulus of frustum-like shape, and choma 5, and the lateral wall root of this choma and the inwall of base shell link together, and the upper shed diameter of this choma is greater than the lower nozzle diameter of necking pipe, the top of above-mentioned necking pipe connects a L-type bend pipe, it is air inlet pipe 6, mouth of pipe 6-1 and the necking pipe of this air inlet pipe coaxially arrange, the lateral wall of described air inlet pipe is near establishing ring flange 113 with the coaxial mouth of pipe 6-1 position of necking pipe, the lower surface of the ring flange 113 that should be connected as a single entity with air inlet pipe is concordant with the lower surface of mouth of pipe 6-1, and the upper surface of ring flange 113 lower surfaces and above-mentioned ring flange 111 joins, described ring flange 111, ring flange 112 and ring flange 113 are bolted on together, in above-mentioned necking pipe, establish the rounded interior plug 7 of cross section, the connector being threaded with necking pipe on this Nei Saitong lateral wall supports, described connector is comprised of journal stirrup 8 and the collar 9, inside establish beyond the Great Wall and be enclosed within inner torus, it is the collar, the collar links together by uniform 3 bar shaped journal stirrups and interior plug, one end of every journal stirrup and the lateral wall of interior plug are bonding, the other end and collar madial wall are bonding, the lateral wall of the described collar is established external screw thread, the inwall of necking pipe is established the internal thread corresponding with external screw thread on the collar, the collar and necking pipe are together by a threaded connection, in described, be provided with a vertical adjusting screw(rod) 10 beyond the Great Wall, the lower end of this adjusting screw(rod) is stretched into the inside of interior plug and is bonded together by glue, the top of adjusting screw(rod) is stretched out described air inlet pipe and is together by a threaded connection with air inlet pipe tube wall, on adjusting screw(rod) and be positioned at the outer attaching nut 11 of air inlet pipe, the lateral wall of above-mentioned base shell is established the ring flange 114 in order to connection device pipeline near bottom position, and the lower surface of the ring flange 114 that should be connected as a single entity with base shell is concordant with the lower surface of base shell.

Claims

1. a venturi fuel gas mixer, comprise base shell, Gas Pipe, choma, necking pipe, air inlet pipe, interior plug, connector and adjusting screw(rod), it is characterized in that: described base shell is equal hollow housing of opening up and down, establishes the Gas Pipe being connected with its inside on its lateral wall; Coaxial and upper orifice diameter is greater than the necking pipe of lower nozzle diameter with it on described base shell, by flange, to connect one, and the upper orifice of this necking pipe stretches out the upper shed of base shell, and lower nozzle stretches in base shell; Near its under shed position, is provided with and is frustum-like shape choma in described base shell, the lateral wall root of this choma and the inwall of base shell link together, and the top of described choma and the bottom of necking pipe have gap; The top of above-mentioned necking pipe connects a L-type air inlet pipe by flange, and mouth of pipe and the necking pipe of this air inlet pipe coaxially arrange; In above-mentioned necking pipe, be provided with interior plug, this interior plug supports by the connector being threaded with necking pipe on its lateral wall, in described, be provided with a vertical adjusting screw(rod) beyond the Great Wall, the top of this adjusting screw(rod) is stretched out described air inlet pipe and is together by a threaded connection with air inlet pipe tube wall.

2. venturi fuel gas mixer according to claim 1, it is characterized in that: described connector is comprised of journal stirrup and the collar, inside establish beyond the Great Wall and be enclosed within inner torus, it is the collar, the collar links together by uniform at least 3 bar shaped journal stirrups and interior plug, one end of every journal stirrup and the lateral wall of interior plug are bonding, the other end and collar madial wall are bonding, the lateral wall of the described collar is established external screw thread, the inwall of necking pipe is established the internal thread corresponding with external screw thread on the collar, and the collar and necking pipe are together by a threaded connection.

3. venturi fuel gas mixer according to claim 1 and 2, is characterized in that: on described adjusting screw(rod) and be positioned at the outer attaching nut of air inlet pipe.

4. venturi fuel gas mixer according to claim 3, is characterized in that: the upper shed diameter of described choma is greater than the lower nozzle diameter of necking pipe.

5. venturi fuel gas mixer according to claim 4, is characterized in that: the lateral wall of above-mentioned base shell is established the ring flange in order to connection device pipeline near bottom position, and the lower surface of the ring flange that should be connected as a single entity with base shell is concordant with the lower surface of base shell.

6. venturi fuel gas mixer according to claim 5, is characterized in that: along described base shell upper shed edge, establish cannelure, establish sealing ring in cannelure.

7. venturi fuel gas mixer according to claim 6, is characterized in that: the cross section of described interior plug is for circular.