CN218688924U

CN218688924U - Full premix mixer

Info

Publication number: CN218688924U
Application number: CN202222974257.XU
Authority: CN
Inventors: 刘小玲; 谢谦
Original assignee: Foster Boiler Co ltd
Current assignee: Foster Boiler Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-24
Anticipated expiration: 2032-11-09

Abstract

The utility model belongs to the technical field of the boiler, concretely relates to full premix mixer, including venturi, venturi internally mounted has and to remove and is used for adjusting the toper revolving cup through the gap, the shape of toper revolving cup and the inside shape looks adaptation on right side of venturi, and the whirl dish that is used for further mist is installed on the venturi right side. The utility model discloses the effect: the stirring is more uniform, and the air mixing effect is better.

Description

Full premix mixer

Technical Field

The utility model belongs to the technical field of the boiler, concretely relates to full premix mixer.

Background

Before the combustion gas in the boiler is ignited by the combustor, the combustion gas is generally mixed by the mixer, generally, air and fuel are mixed, the traditional mixed gas generally depends on the effect of a Venturi tube to mix two gases or a plurality of gases, but the mixing effect is poor, the mixing is uneven, the combustion efficiency is reduced, meanwhile, the flowing speed and the flowing quantity of the mixed gas cannot be controlled, and a novel gas mixed gas is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned weak point that exists among the prior art, the utility model provides a full premix mixer for solve the inhomogeneous that prior art mixes, the size of flow can't carry out the problem controlled.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model discloses a combustion boiler, including a housing, the shell is left right side open-ended cylindrical structure, the shell left end is equipped with and is used for the left side mounting flange of fixed shell, left side mounting flange installs with other reservation positions in the boiler inside, the shell right-hand member is equipped with and is used for the right side mounting flange on fixed shell right side, the right side mounting flange carries out erection joint with the corresponding reservation position in furnace's the outside, left side mounting flange side contacts with the air, right side mounting flange side contacts with in the combustion chamber, the shell bottom is equipped with the natural gas entry, the natural gas entry is flange type structure, natural gas entry top is linked together with the shell is inside, natural gas entry bottom and corresponding pipe connection, the inside venturi that is used for absorbing the natural gas that the natural gas entry came up that is equipped with of shell, venturi internally mounted has the toper revolving cup that can remove about, the shape of toper revolving cup and the inside shape looks adaptation on right side mounting flange on venturi, install the whirl dish that is used for further gas mixture on the right side mounting. Further, venturi is middle diameter little, the big cylinder structure of both ends diameter, the venturi left side is equipped with venturi left side opening, venturi's right side comprises venturi right side opening, venturi left side opening and venturi right side opening are connected through venturi mid portion, the venturi mid portion carries out smooth transition with venturi left side opening and venturi right side opening respectively, venturi left side open-ended maximum diameter is the same with the inboard diameter of shell, be equipped with a plurality of venturi natural gas openings in the part of venturi mid portion, venturi natural gas opening is slot hole type structure, a plurality of natural gas venturi openings become the border of annular distribution in venturi mid portion, do not destroy venturi mid portion's joint strength simultaneously, venturi's natural gas opening UNICOM venturi's the outside and inboard. Further, the toper revolving cup is the bowl type structure that the level was arranged, be equipped with toper revolving cup opening on the toper revolving cup, toper revolving cup opening right, be equipped with toper revolving cup binding face on the lateral surface of toper revolving cup, toper revolving cup binding face is close with toper revolving cup opening, toper revolving cup binding face left side is equipped with and is used for excessive toper revolving cup bottom of cup, toper revolving cup bottom of cup left side is equipped with toper revolving cup bottom of cup fixed orifices, toper revolving cup bottom of cup fixed orifices runs through toper revolving cup and installs the screw rod in the toper revolving cup bottom of cup fixed orifices, screw rod and toper revolving cup bottom of cup fixed orifices fixed connection, the angle of toper revolving cup binding face and venturi right side open-ended angle looks adaptation. Furthermore, a rotational flow disk is mounted on the right-side fixing flange, the outermost ring of the rotational flow disk is a circular rotational flow disk fixing ring, a plurality of rotational flow disk fixing holes for fixed mounting are formed in the rotational flow disk fixing ring, a plurality of rotational flow disk blades are arranged on the rotational flow disk fixing ring, the rotational flow disk blades are of a fan blade type structure which is obliquely arranged, the rotational flow disk blades are circularly distributed, the central parts of the rotational flow disk blades are in contact connection with one another, through holes for avoiding empty screw rods are formed in the central parts of the rotational flow disk blades, the outer sides of the rotational flow disk blades are fixedly connected with the rotational flow disk fixing ring, and gaps are formed between the rotational flow disk blades and the rotational flow disk blades; the lateral surface of screw rod is equipped with the screw thread, the inside left entry position of shell is equipped with the screw rod support frame, the screw rod support frame is the support body structure that three cylinders are constituteed, support the screw rod in the centre jointly, the one end of screw rod support frame and the inside wall fixed connection of shell, three cylinders interconnect of screw rod support frame's central part position, and hookup location department opens there is the through-hole, the size and the screw rod cooperation of through-hole, finally reach the screw rod and supported by the screw rod support frame and can be on the screw rod support frame effect of horizontal slip. Further, a second spiral bevel gear support frame is arranged on the right side of the screw support frame, the structure of the second spiral bevel gear support frame is similar to that of the screw support frame, a spiral bevel gear is supported in the middle of the second spiral bevel gear support frame and is in rotary connection with the second spiral bevel gear support frame, so that the spiral bevel gear can rotate in the original position, a through hole is formed in the middle of the spiral bevel gear, threads are arranged in the through hole, the screw penetrates through the spiral bevel gear and is matched with the spiral bevel gear through internal threads of the spiral bevel gear, and when the spiral bevel gear rotates, the screw moves left and right through the matching of the threads. Furthermore, a transmission rod is arranged on the shell and vertically arranged, the transmission rod penetrates through the shell, an actuator used for controlling and driving the transmission rod to rotate is arranged at the top of the transmission rod, a first spiral bevel gear is arranged at the bottom of the transmission rod, a tooth surface on the first spiral bevel gear is matched with a tooth surface on the spiral bevel gear, and when the first spiral bevel gear rotates, the spiral bevel gear also rotates along with the first spiral bevel gear.

Compared with the prior art, the utility model, following beneficial effect has:

1. air and natural gas mix into combustible mist behind the venturi, after the mixture of toper revolving cup, the further stirring of rethread whirl dish mixes, gets into the combustor burning at last, lets the mixing efficiency higher, and combustion efficiency is higher. 2. The stirring is more even after increasing the whirl dish, and it is better to mix the wind effect, and burning oxygen content can be reduced to below 3.5%, and the burning is more abundant. 3. The conical rotating cup can move left and right by arranging a series of structures, the actuator adjusts the adjustable circular tube to move back and forth by controlling the spiral bevel gear, the flow size and the flow speed of the mixed gas are adjusted, and the adjustment ratio can be controlled at will. It is suitable for all mixers.

Drawings

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

FIG. 2 is a schematic front view of the spinning disk;

FIG. 3 is a schematic side view of the spinning disk;

FIG. 4 is a schematic view of the venturi structure;

FIG. 5 is a schematic view of a cone-shaped rotor.

Reference numerals referred to in the drawings are:

1. the vortex disk type Venturi tube comprises a shell, 2 parts of a left fixing flange, 3 parts of a right fixing flange, 4 parts of a screw rod supporting frame, 5 parts of a screw rod, 6 parts of a second spiral bevel gear supporting frame, 7 parts of a spiral bevel gear, 8 parts of an actuator, 9 parts of a transmission rod, 10 parts of a first spiral bevel gear, 11 parts of a Venturi tube, 12 parts of a conical rotating cup, 13 parts of a vortex disk, 14 parts of a vortex disk fixing hole, 15 parts of a vortex disk blade, 16 parts of a vortex disk fixing ring, 17 parts of a natural gas inlet, 18 parts of a Venturi tube natural gas opening, 19 parts of a Venturi tube left opening, 20 parts of a Venturi tube middle part, 21 parts of a Venturi tube right opening, 22 parts of a conical rotating cup attaching surface, 23 parts of a conical rotating cup bottom, 24 parts of a conical rotating cup opening, and 25 parts of a conical rotating cup bottom fixing hole.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.

Example one

As shown in FIGS. 1-5, a full premix mixer is provided, which comprises installing the apparatus outside the combustion furnace, fixedly connecting the right fixing flange 3 to the outer side wall of the combustion furnace, allowing the housing 1 to correspond to the inlet of the combustion chamber, connecting the natural gas inlet 17 to the corresponding natural gas supply pipe, continuously supplying natural gas from the spiral bevel gear 7 to the interior of the housing 1, supplying external air by a blower after the operation of the entire apparatus is started, allowing the external air to enter the interior of the housing 1 from the left side of the housing 1, allowing the air to pass through the screw support frame 4 and the second spiral bevel gear support frame 6, allowing the air to pass therethrough because the screw support frame 4 and the second spiral bevel gear support frame 6 are both cylindrical rod-made frame structures, thereby allowing no blocking effect on the air, allowing the air to pass therethrough smoothly, allowing the air to flow through the drive rod 9 and the first spiral bevel gear 10, allowing the air to pass therethrough because the cylindrical rod 9 is also a cylindrical rod-shaped structure, allowing no blocking effect on the air to pass therethrough, allowing the air to enter the left portion of the venturi tube 11, allowing the air to pass therethrough, allowing the air to flow through the venturi tube 11, allowing the venturi tube 11 to pass therethrough, allowing the natural gas to flow through the venturi tube 11, allowing the natural gas to pass therethrough, the venturi tube to flow through the venturi tube 11, the venturi tube 18, the venturi tube 11, the venturi tube 18 to flow through the venturi tube 11, the venturi tube 18, the venturi tube to pass therethrough, the gas mixture continuously moves forwards after being mixed and contacted with the conical rotating cup 12, the conical rotating cup 12 is opened to the right, the left side of the conical rotating cup 12 is in a conical structure, the gas mixture is diffused towards 4 circles through the surface shape of the conical rotating cup 12 after being contacted with the conical rotating cup 12, and the shape of the conical rotating cup 12 is matched with the internal shape of the Venturi tube 11; when the actuator 8 is controlled, the actuator 8 can drive the transmission rod 9 to rotate, the transmission rod 9 rotates to drive the first spiral bevel gear 10 to rotate, the first spiral bevel gear 10 rotates to drive the spiral bevel gear 7 to rotate by means of gear transmission, the spiral bevel gear 7 rotates at the original position, the screw 5 is pushed to move left and right through the matching of threads inside the spiral bevel gear 7 and the screw 5, the screw 5 is fixedly connected with the conical cup 12, when the screw 5 moves left and right, the conical cup 12 moves left and right inside the venturi tube 11, the shape of the outer side surface of the conical cup 12 is matched with that of the inner side surface of the venturi tube 11, when the conical cup 12 is matched with the venturi tube 11, the venturi tube 11 is completely blocked by the conical cup 12, all gas cannot move forward through the venturi tube 11, when a gap exists between the conical cup 12 and the venturi tube 11, the gas in the venturi tube 11 can continuously flow forward through the gap between the conical cup and the venturi tube 11, when the mixed gas flows forward through the gap, the mixed gas finally flows through the swirl disk 13, when the mixed gas flows forward through the gap, the mixed gas flows through the swirl disk 13, the mixed gas flows to the optimum mixing efficiency is reached, and the mixed gas flows through the swirl disk 13, when the mixed gas flows to the optimum mixing efficiency after the swirl disk 13 is arranged on the swirl disk 13, the right end of the screw 5 can pass through the through hole without colliding with the swirl disk 13, and the conical rotor 12 can be used for controlling the gas passing amount of the venturi tube 11 besides mixing the gas, so that the burning fuel gas is more controllable.

Claims

1. A full premix mixer, characterized by: comprising a venturi tube (11); a conical rotating cup (12) which can move left and right and is used for adjusting a passing gap is arranged in the Venturi tube (11);

the shape of the conical rotating cup (12) is matched with the shape of the right side inside the Venturi tube (11);

venturi tube (11): the right side is provided with a swirl disk (13) for further mixing of the gas.

2. A full premix mixer as claimed in claim 1, wherein: the Venturi tube (11) comprises a Venturi tube left opening (19), a Venturi tube middle part (20) and a Venturi tube right opening (21); a plurality of venturi tube natural gas openings (18) are arranged on the middle part (20) of the venturi tube;

the natural gas opening (18) of the Venturi tube is communicated with the outer side and the inner side of the Venturi tube (11).

3. A full premix mixer according to claim 2, characterized in that: a conical rotating cup opening (24) is arranged on the conical rotating cup (12);

a conical rotating cup bottom fixing hole (25) is arranged on the conical rotating cup (12);

a screw (5) is arranged in the conical rotating cup bottom fixing hole (25).

4. A full premix mixer according to claim 3, characterized in that: the swirl disk (13) is provided with a plurality of swirl disk blades (15);

swirl disk blades (15): the fan blade structure is arranged obliquely;

the central parts of the plurality of swirl disc blades (15) are provided with through holes.

5. A full premix mixer according to claim 4, wherein: a screw rod supporting frame (4) is arranged in the shell (1);

the screw rod (5) slides left and right on the screw rod supporting frame (4).

6. A full premix mixer as claimed in claim 5, wherein: a second spiral bevel gear support frame (6) is arranged on the right side of the screw support frame (4);

a spiral bevel gear (7) is arranged on the second spiral bevel gear support frame (6);

the screw (5) passes through the spiral bevel gear (7); and is matched with the spiral bevel gear (7) through the internal thread of the spiral bevel gear.

7. A full premix mixer according to claim 6, wherein: a transmission rod (9) is arranged on the shell (1): the top of the transmission rod (9) is provided with an actuator (8);

a first spiral bevel gear (10) is arranged at the bottom of the transmission rod (9); the first helical bevel gear (10) is matched with the helical bevel gear (7).