CN111792819A - glass furnace - Google Patents

Abstract

The invention provides a glass kiln, including a small furnace, and is characterized in that: it also includes a plurality of spray gun devices; a plurality of through holes are arranged on the floor bricks of the small furnace; the spray gun device includes a spray gun, a connecting seat and a cylinder; The upper end of the spray gun is covered with a spray gun cap; the lower end of the spray gun is connected with the upper end of the connecting seat, the lower end of the connecting seat is connected with the head of the piston rod of the cylinder, and the tail end of the cylinder is connected with the steel structure of the glass furnace; When the piston rod of the cylinder is extended, the nozzle of the spray gun can enter the cavity of the small furnace through the corresponding through hole; when the piston rod of the cylinder is retracted, the nozzle of the spray gun can exit the cavity of the small furnace, and the spray gun cap The through hole can be sealed. The structure of the present invention has little modification to the small furnace of the kiln, and the cost of the modification is low. The glass kiln of the present invention can use either the producer gas or the clean gas as the fuel, and can also use the above-mentioned two kinds of gas co-firing. it is good.

Description

glass furnace

technical field

The invention relates to the technical field of glass manufacturing, in particular to a glass furnace.

Background technique

Because the price of natural gas or petroleum gas is too high, the cost of burning furnace gas is much lower than that of burning natural gas or petroleum gas for the same size glass furnace. Therefore, there are currently many glass furnaces that use furnace gas as fuel in China. . However, the flue gas produced by kilns that use producer gas as a raw material contains many harmful substances and causes serious environmental pollution. These kilns are in urgent need of upgrading and updating so that they can also use clean energy such as natural gas as fuel. If the glass kiln that burns producer gas is directly replaced with one that burns clean energy, the investment cost is too high; The investment cost can be reduced, but the existing technology has great difficulties. As shown in the schematic diagram of the structure of the glass kiln for burning the producer gas as shown in the accompanying drawing, since the producer gas is characterized by low calorific value (<1500kcal/Nm3) and many impurities, in order to meet the combustion temperature of the kiln, a relatively high temperature is required. The large channel transports the mixed gas into the kiln for use. This channel is the small furnace channel 101. The small furnace structure of this kiln is divided into upper and lower layers. The upper layer is the combustion-supporting air channel 102, and the lower layer is the generator gas channel 103. , the two gases are mixed at the rear end of the small furnace and then enter the furnace 104 for combustion. As shown in the schematic diagram of the structure of the natural gas-fired glass kiln shown in FIG. 2, the fuel is injected into the interior of the kiln 104 through the pipeline 105, the lance 106 and the nozzle brick 107, and the small furnace structure of this kiln has only one combustion-supporting air passage 102. , the spray gun is installed horizontally. If the lance is arranged horizontally to the lower part of the small furnace of the kiln burning the producer gas according to the method shown in FIG. 2, on the one hand, the height of the combustion-supporting air channel of the small furnace channel will be increased, which will affect the radiant heat of the flame in the furnace. On the other hand, in the above transformation method, the layout of the spray gun takes up a lot of space, the layout is more difficult, the structure of the transformation is complex, and the transformation cost is high; at the same time, the angle of the nozzle of the spray gun cannot be Adjustment, can not meet the needs of a variety of production conditions.

SUMMARY OF THE INVENTION

In view of the problems of the background technology, the present invention provides a glass kiln to solve the problems of difficult lance arrangement, complicated structure and high transformation cost in the transformation of the glass kiln burning producer gas in the prior art, and also affects the The problem of fuel combustion effect and product quality.

In order to achieve the purpose of the present invention, the present invention provides a glass furnace, including a small furnace, the innovative point of which is that it also includes a plurality of spray gun devices; The axial direction of the through holes is arranged vertically, and a plurality of the through holes correspond to a plurality of the spray gun devices one-to-one; the spray gun devices include a spray gun, a connecting seat and a cylinder; the radial dimension of the shell of the spray gun is smaller than the through holes The radial dimension of the spray gun is arranged on the upper part of the spray gun, and the axial direction of the nozzle is arranged along the radial direction of the spray gun; the upper end of the spray gun is covered with a spray gun cap, and the spray gun cap covers the upper end of the spray gun, The outer diameter of the spray gun cap matches the radial size of the through hole; the lower end of the spray gun is connected with the upper end of the connecting seat, and the lower end of the connecting seat is connected with the head of the piston rod of the cylinder, so The tail end of the cylinder body of the cylinder is connected with the steel structure of the glass furnace; the single spray gun is opposite to the position corresponding to the through hole; when the piston rod of the cylinder is extended, the upper part of the spray gun can pass through the corresponding The through hole of the spray gun allows the nozzle to enter the cavity of the small furnace; when the piston rod of the cylinder is retracted, the nozzle of the spray gun can exit the cavity of the small furnace, and the spray gun cap can fill the through hole ; The spray gun cap is made of refractory material.

As an optimization, the spray gun includes a first air intake pipe, a second air intake pipe and a water-cooled sleeve arranged in sequence from the inside to the outside; the axes of the first air intake pipe, the second air intake pipe and the water-cooled sleeve are coincident; the Both ends of the water-cooling sleeve are closed; the upper end of the first air inlet pipe is closed, the lower end of the first air inlet pipe protrudes from the lower end surface of the second air inlet pipe, and the lower end of the first air inlet pipe is provided with The first air inlet joint; the two ends of the second air inlet pipe are closed, the lower end of the second air inlet pipe protrudes from the lower end surface of the water-cooling sleeve, and the pipe wall of the lower end of the second air inlet pipe is provided with the second air inlet connector;

The nozzle includes a first nozzle and a second nozzle, the first nozzle is arranged on the pipe wall of the upper end of the first intake pipe, and the axial direction of the first nozzle is along the diameter of the first intake pipe The second nozzle is arranged on the pipe wall of the upper end of the second air inlet pipe, the axial direction of the second nozzle is arranged along the radial direction of the second air inlet pipe, and the second nozzle is arranged from The pipe wall of the water-cooling sleeve protrudes, and the injection cavity of the second nozzle communicates the inner cavity of the second intake pipe with the atmosphere; the first nozzle is arranged in the second nozzle, and the first nozzle is arranged in the second nozzle. A nozzle coincides with the axis of the second nozzle, and the injection cavity of the first nozzle communicates the inner cavity of the first intake pipe with the atmosphere;

A water inlet pipe and a water outlet pipe are also arranged on the lower end surface of the water cooling sleeve, the upper end opening of the water inlet pipe is arranged at the upper end of the inner cavity of the water cooling sleeve, and the lower end of the water inlet pipe extends from the lower end surface of the water cooling sleeve. The lower end of the water inlet pipe is provided with a water inlet joint; the upper end opening of the water outlet pipe is arranged at the lower end of the inner cavity of the water cooling sleeve, and the lower end of the water outlet pipe protrudes from the lower end face of the water cooling sleeve, The lower end of the water outlet pipe is provided with a water outlet joint.

As an optimization, the through hole is composed of an upper hole and a lower hole, the lower port of the upper hole is connected to the upper port of the lower hole, the diameter of the upper hole gradually increases from bottom to top, and the lower hole The aperture gradually increases from top to bottom; the head of the cylinder piston rod is hinged with the connecting seat, and the tail end of the cylinder block is hinged with the steel structure of the glass furnace; the steel structures on both sides of the spray gun are hinged A chute is respectively provided, two of the chute are symmetrically arranged along the axial direction of the small furnace, two guide pieces are provided on the outer peripheral surface of the spray gun, and the two guide pieces are respectively sleeved on the two slides. In the groove, the two guides can slide up and down in the two chute; the included angle between the axial direction of the chute and the axial direction of the small furnace can be adjusted.

As an optimization, the upper hole is a conical hole; the upper end of the lower hole is a round hole, the lower end of the lower hole is a flat hole, and the long axis direction of the flat hole is arranged along the axial direction of the small furnace, so The long axis of the flat hole is larger than the diameter of the circular hole.

As an optimization, the shape and size of the outer peripheral surface of the spray gun cap are matched with the upper hole.

As an optimization, the spray gun cap is a cone, and the outer diameter of the spray gun cap gradually increases from bottom to top.

As an optimization, a plurality of the through holes are uniformly distributed along the transverse direction of the small furnace, and a plurality of the spray gun devices are uniformly distributed along the transverse direction of the small furnace.

As an optimization, there are three through holes and three spray gun devices.

The principle of the present invention is as follows:

In order not to affect the height position of the small furnace passage of the kiln and minimize the changes to the structure of the small furnace, the inventor creatively proposes that: by opening holes in the slabs at the bottom of the small furnace, the spray gun is vertically lifted from the bottom of the small furnace to achieve the For the purpose of transporting clean gas into the small furnace for combustion, according to the above method, the bottom plate brick of the small furnace only needs to have a hole slightly larger than the outer diameter of the spray gun, and the spray gun can pass through it. The structural modification of the small furnace is very small, and the spray gun only needs to be A cylinder is required as a lifting device, the structure is simple, the space occupied is small, and the arrangement requirements of the limited space below the small furnace can be met, and the realization cost of the above structure is also very low. At the same time, due to the small change to the small furnace of the glass kiln, the functions of the original glass kiln can be completely retained on the basis of adding new functions, so the transformed kiln can not only burn clean gas, but also burn furnace gas It can also co-fire clean gas and producer gas to meet the needs of various production processes and achieve a reasonable balance of energy consumption, production costs and environmental protection.

On the other hand, due to the opening at the bottom of the small furnace, when the lance descends and exits the small furnace, if the opening is not blocked, the high-temperature gas and radiant heat in the small furnace will escape from the opening, resulting in a decrease in the temperature in the small furnace. Energy waste. In order to solve the above-mentioned problems, the present invention sets a spray gun cap made of refractory material on the upper end of the spray gun. The shape and size of the spray gun cap are matched with the shape and size of the opening at the bottom of the small furnace. When the spray gun descends and exits the small furnace, the spray gun cap is It can just block the opening to achieve the effect of sealing the air passage of the small furnace. At the same time, the spray gun cap also plays the role of heat insulation and protection for the upper end of the spray gun.

At the same time, in order to satisfy the above-mentioned installation structure and ensure that the gas conveying direction is toward the kiln, the spray gun of the present invention changes the spray direction of the nozzle from the axial direction of the spray gun to the radial direction of the spray gun. On the other hand, since the temperature in the small furnace is usually as high as 1200-1400 ℃, the lance extends into the small furnace and needs to adapt to the high temperature working environment. In the present invention, a water-cooled sleeve is arranged in the spray gun, so that a water-cooled channel is formed between the water-cooled sleeve and the second air inlet pipe, and the temperature of the surface and the internal structure of the spray gun is effectively reduced through the circulation of cold water, so that the spray gun can continue to operate in a high temperature environment. Work. The spray gun of the present invention also has two intake passages, both of which are fed with clean gas, which are sprayed from the inner and outer two nozzles (the first nozzle and the second nozzle) respectively. Flow adjustment can adjust the length of the flame injected into the kiln to meet the requirements of different production processes.

On the other hand, in the production process of the spray gun, the flow rate of the clean gas sprayed by the spray gun will be affected by many factors: due to the different calorific values of various clean gas (natural gas, petroleum gas, gas gas, etc.), in order to achieve the required The flame temperature of the kiln and the gas flow of the lance have different requirements. The gas flow with a higher calorific value has a lower demand, and the gas flow with a lower calorific value has a higher demand; the gas flow of the lance is also related to the volume of the molten glass in the kiln. Relatedly, when there is a lot of molten glass in the kiln, the gas flow requirement of the lance is larger, and when there is less molten glass in the kiln, the gas flow requirement of the lance is smaller. The inventor found in the production practice that the flow rate of the spray gun will affect the mixing effect of the clean gas and the combustion-supporting air in the small furnace, and the insufficient or uneven mixing of the above two gases will affect the combustion effect of the flame in the furnace. The inventor found through a lot of experiments that when the flow rate of the spray gun is small, by raising the spray angle of the nozzle to a certain angle, the two gases can be mixed more fully, and the flame combustion can meet the requirements. When it is larger, by adjusting the injection angle of the nozzle to a certain angle below the horizontal direction, the two gases can be mixed more fully, so that the kiln flame can meet the production requirements. Therefore, in the present invention, by arranging chutes on both sides of the spray gun, and setting guides on both sides of the spray gun, the guides can slide up and down in the chutes, that is, the up and down trajectory of the spray gun is determined by the direction of the chutes. Adjust the inclination angle of the chute to achieve the adjustment of the inclination angle of the spray gun, so as to achieve the adjustment of the spray angle of the nozzle.

It can be seen that the present invention has the following beneficial effects: the present invention makes less structural changes to the kiln, the reformed structure is simple, and the cost of reformation is low, and the reformed kiln can be produced by using both producer gas and clean gas. In the production, the above two kinds of gas can also be used for mixed production, which not only has good versatility, but also achieves the purpose of comprehensively balancing production cost, production energy consumption and environmental protection. The invention can also improve the mixing effect of the combustion-supporting gas and the clean gas by adjusting the injection angle of the nozzle of the spray gun, so as to meet the requirements of various output and the use of gas with different calorific values. To meet production needs, so as to ensure product quality. Moreover, the invention has small openings for the small furnace, and after the spray gun is withdrawn, the openings are filled with the spray gun cap, so the energy loss is less, and the production cost is further saved.

Description of drawings

The accompanying drawings of the present invention are described below.

Accompanying drawing 1 is the structural representation of producer gas glass furnace in the prior art;

Accompanying drawing 2 is the structural representation of clean gas glass kiln in the prior art;

Accompanying drawing 3 is the structural representation of the present invention;

Accompanying drawing 4 is A-A sectional view of FIG. 3;

Accompanying drawing 5 is the structural representation of spray gun;

Accompanying drawing 6 is the right side view of FIG. 5;

Accompanying drawing 7 is the connection structure schematic diagram of spray gun;

Accompanying drawing 8 is the sectional view of FIG. 7;

Accompanying drawing 9 is the spray gun angle adjustment schematic diagram;

Accompanying drawing 10 is the B-B sectional view of accompanying drawing 8;

Accompanying drawing 11 is the structure schematic diagram of the glass kiln that configures 2 small furnaces;

FIG. 12 is a top view of FIG. 11 .

In the figure: 1, small furnace; 2, spray gun; 3, connecting seat; 4, cylinder; 5, spray gun cap; 6, chute; 11, through hole; 21, first air inlet pipe; 22, second air inlet pipe; 23. Water cooling casing; 24. The first nozzle; 25. The second nozzle; 26. The water inlet pipe; 27, the water outlet pipe; channel; 104, kiln; 105, pipeline; 106, spray gun; 107, nozzle brick; 111, upper hole; 112, lower hole; 211, first air inlet connector; 221, second air inlet connector; 261, water inlet Joint; 271, outlet joint; 601, first bolt; 602, arc strip hole; 603, second bolt; 1121, round hole; 1122, flat hole; 1-1, left small furnace; 1-2, right Side small stove.

Detailed ways

The present invention will be further described below in conjunction with the examples.

As shown in Fig. 3 and Fig. 4, the glass kiln includes a small furnace 1 and three spray gun devices; the floor bricks of the small furnace 1 are provided with three through holes 11. The axial direction is arranged vertically, and the three through holes 11 correspond to the three spray gun devices one-to-one; the three through holes 11 are evenly distributed along the horizontal direction of the small furnace 1, and the three spray gun devices are distributed along the small furnace 1. 1 is distributed horizontally. The number of spray gun devices and through holes 11 is configured according to the size of the small furnace 1, and can also be other numbers. The arrangement is uniformly distributed in the horizontal direction of the small furnace 1, mainly to make the clean gas sprayed from the spray gun and the combustion support from the regenerator The air is mixed more evenly and fully.

The spray gun device includes a spray gun 2, a connecting seat 3 and a cylinder 4; the radial size of the shell of the spray gun 2 is smaller than the radial size of the through hole 11, the nozzle of the spray gun 2 is arranged on the upper part of the spray gun 2, and the axial direction of the nozzle is It is arranged along the radial direction of the spray gun 2; the specific structure of the spray gun is shown in Figures 5 and 6, and the spray gun 2 includes a first air inlet pipe 21, a second air inlet pipe 22 and a water-cooling sleeve 23 which are sequentially arranged from the inside to the outside. The axes of the first air inlet pipe 21, the second air inlet pipe 22 and the water-cooled sleeve 23 are coincident; the two ends of the water-cooled sleeve 23 are closed; the upper end of the first air inlet pipe 21 is closed, and the first air inlet pipe 21 is closed. The lower end of an air intake pipe 21 protrudes from the lower end surface of the second air intake pipe 22 , the lower end of the first air intake pipe 21 is provided with a first air intake joint 211 ; both ends of the second air intake pipe 22 are closed , the lower end portion of the second air inlet pipe 22 protrudes from the lower end surface of the water-cooling sleeve 23, and a second air inlet joint 221 is provided on the pipe wall of the lower end portion of the second air inlet pipe 22;

The nozzle includes a first nozzle 24 and a second nozzle 25, the first nozzle 24 is arranged on the pipe wall of the upper end of the first air intake pipe 21, and the axial direction of the first nozzle 24 is along the first nozzle 24. A radial direction of the intake pipe 21 ; the second nozzle 25 is disposed on the pipe wall of the upper end of the second intake pipe 22 , and the axial direction of the second nozzle 25 is along the direction of the second intake pipe 22 . radially arranged, the second nozzle 25 protrudes from the tube wall of the water-cooled sleeve 23, and the injection cavity of the second nozzle 25 communicates the inner cavity of the second air intake pipe 22 with the atmosphere; the first A nozzle 24 is arranged in the second nozzle 25 , the first nozzle 24 and the axis of the second nozzle 25 are coincident, and the injection cavity of the first nozzle 24 is to the inside of the first intake pipe 21 . The cavity is in communication with the atmosphere;

A water inlet pipe 26 and a water outlet pipe 27 are also provided on the lower end surface of the water-cooled sleeve 23. The upper end opening of the water inlet pipe 26 is arranged at the upper end of the inner cavity of the water-cooled sleeve 23. The lower end surface of the water-cooling sleeve 23 protrudes, and the lower end of the water inlet pipe 26 is provided with a water inlet joint 261; The lower end of the water-cooling sleeve 23 protrudes from the lower end surface of the water-cooling sleeve 23 , and the lower end of the water outlet pipe 27 is provided with a water outlet joint 271 .

As shown in FIG. 8 and FIG. 10 , the through hole 11 is composed of an upper hole 111 and a lower hole 112 , the lower port of the upper hole 111 is connected to the upper port of the lower hole 112 , and the upper hole 111 The aperture gradually increases from bottom to top, and the aperture of the lower hole 112 gradually increases from top to bottom; the upper hole 111 is a conical hole; the upper end of the lower hole 112 is a circular hole 1121, and the lower hole The lower end of 112 is a flat hole 1122, the long axis of the flat hole is arranged along the axial direction of the small furnace 1, and the long axis of the flat hole is larger than the diameter of the round hole. The axial direction of the small furnace 1 in the present invention refers to the direction from the inlet end of the combustion air to the outlet end of the small furnace in the horizontal direction.

As shown in FIG. 5 and FIG. 8 , the upper end of the spray gun 2 is covered with a spray gun cap 5, and the spray gun cap 5 covers the upper end of the spray gun 2; the spray gun cap 5 is a cone, and the spray gun cap 5 The outer diameter gradually increases from bottom to top. The shape and size of the outer peripheral surface of the spray gun cap 5 are matched with the upper hole 111 , and the spray gun cap 5 is made of refractory material.

As shown in FIG. 7 and FIG. 8 , the lower end of the spray gun 2 is connected with the upper end of the connecting seat 3 , and the lower end of the connecting seat 3 is hinged with the head of the piston rod of the air cylinder 4 . The tail end of the cylinder block 4 is hinged with the steel structure of the glass kiln; the steel structures on both sides of the spray gun 2 are respectively provided with a chute 6 , and the two chute 6 are symmetrically arranged along the axis of the small furnace 1 .

As shown in FIG. 6 and FIG. 7 , two guide members 28 are provided on the outer peripheral surface of the spray gun 2 , and the two guide members 28 are respectively fitted into the two sliding grooves 6 . 28 can slide up and down in the two chute 6; the included angle between the axial direction of the chute 6 and the axial direction of the small furnace 1 can be adjusted. In fact, since the axial direction of the small furnace 1 remains unchanged, the adjustment of the axial angle between the chute 6 and the small furnace 1 is the adjustment of the inclination angle of the chute 6. The structure and method of the above adjustment can be adopted in the prior art. Common technical means can be achieved. FIG. 8 is an adjustment structure of this embodiment. The lower end of the chute 6 is hinged to the steel structure through the first bolt 601, and the upper end of the chute 6 is provided with an arc-shaped strip hole 602. The chute 6 is connected to the steel structure through the arc bar hole 602 using the second bolt 603. As shown in FIG. 9, when the inclination angle of the chute 6 needs to be adjusted, it is only necessary to loosen the first bolt 601 and the second bolt 603 , then swing the upper end of the chute 6 to the desired angle, and then tighten the first bolt 601 and the second bolt 603. At this time, when the cylinder piston rod extends, the guide 28 can rise along the inclined direction of the chute 6 until the gun reaches the working position.

As shown in FIG. 3 , a single spray gun 2 is opposite to the position corresponding to the through hole 11 ; when the piston rod of the air cylinder 4 is extended, the upper part of the spray gun 2 can pass through the corresponding through hole 11 to make the The nozzle enters the cavity of the small furnace 1; when the piston rod of the cylinder 4 is retracted, the nozzle of the spray gun 2 can exit the cavity of the small furnace 1, and when the spray gun 2 exits the cavity of the small furnace 1 Then, the spray gun cap 5 can fill the through hole 11 .

As shown in Figures 11 and 12, in actual production, usually a kiln is equipped with two small furnaces and connected to two regenerators respectively. When the regenerator on one side sends combustion-supporting air to the kiln through the corresponding small furnaces At the same time, the regenerator on the other side receives the high-temperature flue gas discharged from the kiln through the corresponding small furnace to heat the regenerator. As shown in Figure 11, this is the case where only clean gas is used as fuel or the clean gas is mixed with generator gas. The 3 lances of the furnace 1-1 are lifted into the small furnace to deliver clean gas. At this time, the 3 lances of the small furnace 1-2 on the right side descend and exit the small furnace, and the lance caps of the 3 lances of the small furnace 1-2 on the right Block the through hole at the bottom of the small furnace. At this time, the small furnace on the right transports the high temperature flue gas discharged from the furnace to the regenerator on the right for preheating; when the regenerator on the right is preheated, the left and right The regenerators exchange working states, the regenerator on the right sends combustion-supporting air to the small furnace, and the three lances of the small furnace 1-2 on the right are lifted into the small furnace to deliver clean gas. At this time, the small furnace 1-1 on the left The three lances of the kiln descend and exit the small furnace, and the lance caps of the three lances of the small furnace 1-1 on the left block the through holes at the bottom of the small furnace. The left regenerator is preheated. If only the generator gas is used and no clean gas is used as the fuel, the lances on both sides will all exit the small furnace. At this time, the through holes at the bottom of the two small furnaces are blocked by the lance caps to prevent the high temperature gas in the small furnace from escaping. to reduce energy loss.

Claims (8)

1. A glass kiln comprises a small furnace (1), and is characterized in that: the spray gun device also comprises a plurality of spray gun devices; a plurality of through holes (11) are formed in the bottom plate brick of the small furnace, the axial direction of each through hole (11) is vertically arranged, and the plurality of through holes (11) correspond to the plurality of spray gun devices one by one; the spray gun device comprises a spray gun (2), a connecting seat (3) and a cylinder (4); the radial size of the outer shell of the spray gun (2) is smaller than that of the through hole (11), the nozzle of the spray gun (2) is arranged at the upper part of the spray gun (2), and the axial direction of the nozzle is arranged along the radial direction of the spray gun (2); a spray gun cap (5) is sleeved at the upper end of the spray gun (2), the spray gun cap (5) covers the upper end of the spray gun (2), and the outer diameter of the spray gun cap (5) is matched with the radial dimension of the through hole (11); the lower end of the spray gun (2) is connected with the upper end of the connecting seat (3), the lower end of the connecting seat (3) is connected with the head of a piston rod of the air cylinder (4), and the tail end of the air cylinder body of the air cylinder (4) is connected with a steel structure of the glass kiln; the single spray gun (2) is opposite to the position corresponding to the through hole (11); when a piston rod of the air cylinder (4) extends out, the upper part of the spray gun (2) can penetrate through the corresponding through hole (11) to enable the spray nozzle to enter a cavity of the small furnace (1); when the piston rod of the cylinder (4) retracts, the nozzle of the spray gun (2) can exit from the cavity of the small furnace (1), and the spray gun cap (5) can plug the through hole (11); the spray gun cap (5) is made of a refractory material.

2. The glass furnace of claim 1, wherein: the spray gun (2) comprises a first air inlet pipe (21), a second air inlet pipe (22) and a water-cooling sleeve (23) which are arranged from inside to outside in sequence; the axes of the first air inlet pipe (21), the second air inlet pipe (22) and the water-cooling sleeve (23) are superposed; the two ends of the water-cooling sleeve (23) are closed; the upper end of the first air inlet pipe (21) is closed, the lower end part of the first air inlet pipe (21) extends out of the lower end face of the second air inlet pipe (22), and a first air inlet joint (211) is arranged at the lower end of the first air inlet pipe (21); two ends of the second air inlet pipe (22) are closed, the lower end part of the second air inlet pipe (22) extends out of the lower end face of the water-cooling sleeve (23), and a second air inlet joint (221) is arranged on the pipe wall of the lower end part of the second air inlet pipe (22);

the nozzle comprises a first nozzle (24) and a second nozzle (25), the first nozzle (24) is arranged on the pipe wall of the upper end part of the first air inlet pipe (21), and the axial direction of the first nozzle (24) is arranged along the radial direction of the first air inlet pipe (21); the second nozzle (25) is arranged on the pipe wall of the upper end part of the second air inlet pipe (22), the axial direction of the second nozzle (25) is arranged along the radial direction of the second air inlet pipe (22), the second nozzle (25) extends out of the pipe wall of the water-cooling sleeve (23), and the inner cavity of the second air inlet pipe (22) is communicated with the atmosphere through the spraying cavity of the second nozzle (25); the first nozzle (24) is arranged in the second nozzle (25), the axes of the first nozzle (24) and the second nozzle (25) are overlapped, and the spraying cavity of the first nozzle (24) communicates the inner cavity of the first air inlet pipe (21) with the atmosphere;

a water inlet pipe (26) and a water outlet pipe (27) are further arranged on the lower end face of the water-cooling sleeve (23), an opening at the upper end of the water inlet pipe (26) is arranged at the upper end of the inner cavity of the water-cooling sleeve (23), the lower end of the water inlet pipe (26) extends out of the lower end face of the water-cooling sleeve (23), and a water inlet joint (261) is arranged at the lower end of the water inlet pipe (26); the upper end opening of outlet pipe (27) sets up the lower extreme of water-cooling sleeve pipe (23) inner chamber, the lower extreme of outlet pipe (27) is followed the lower terminal surface of water-cooling sleeve pipe (23) stretches out, the lower extreme of outlet pipe (27) is provided with water connectors (271).

3. The glass furnace according to claim 1 or 2, characterized in that: the through hole (11) consists of an upper hole (111) and a lower hole (112), the lower port of the upper hole (111) is connected with the upper port of the lower hole (112), the aperture of the upper hole (111) is gradually increased from bottom to top, and the aperture of the lower hole (112) is gradually increased from top to bottom; the head of a piston rod of the air cylinder (4) is hinged with the connecting seat (3), and the tail end of a cylinder body of the air cylinder (4) is hinged with a steel structure of the glass kiln; the steel structures on two sides of the spray gun (2) are respectively provided with a sliding chute (6), the two sliding chutes (6) are symmetrically arranged along the axial direction of the small furnace (1), the outer peripheral surface of the spray gun (2) is provided with two guide pieces (28), the two guide pieces (28) are respectively sleeved in the two sliding chutes (6), and the two guide pieces (28) can slide up and down in the two sliding chutes (6); the included angle between the axial direction of the chute (6) and the axial direction of the small furnace (1) can be adjusted.

4. The glass furnace of claim 3, wherein: the upper hole (111) is a conical hole; the upper end of the lower hole (112) is a round hole, the lower end of the lower hole (112) is a flat hole, the long axis direction of the flat hole is arranged along the axial direction of the small furnace (1), and the long axis size of the flat hole is larger than the diameter size of the round hole.

5. The glass furnace of claim 4, wherein: the shape and the size of the outer peripheral surface of the spray gun cap (5) are matched with those of the upper hole (111).

6. The glass furnace of claim 5, wherein: the spray gun cap (5) is a cone, and the outer diameter of the spray gun cap (5) is gradually increased from bottom to top.

7. The glass furnace according to claim 1 or 2, characterized in that: a plurality of through-holes (11) are distributed along the transverse direction of the small furnace (1) uniformly, and a plurality of spray gun devices are distributed along the transverse direction of the small furnace (1) uniformly.

8. The glass furnace of claim 7, wherein: the number of the through holes (11) is 3, and the number of the spray gun devices is 3.

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