CN210372127U

CN210372127U - Lifting valve for heat accumulating type waste gas incinerator

Info

Publication number: CN210372127U
Application number: CN201921199128.XU
Authority: CN
Inventors: 黄刚
Original assignee: Hunan Qingshui Intelligent Equipment Co ltd
Current assignee: Hunan Qingshui Intelligent Equipment Co ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-04-21
Anticipated expiration: 2029-07-29

Abstract

A poppet valve for heat accumulating type waste gas incinerator belongs to the incinerator field, and comprises a shell, a driving piece, a valve rod and a valve body arranged in the shell, wherein the driving piece is connected with the valve rod, the valve rod extends into the shell and is detachably connected with the valve body, the valve body is circular, the valve body is hexagonal or octagonal along a section on the diameter, ceramic is sprayed on the surface of the valve body to form a ceramic layer, an air inlet and a plurality of air outlets are formed in the shell, a sealing ring is arranged on each air outlet, and the surface of the sealing ring is attached to at least one surface of the valve body; the valve body and the high-temperature-resistant sealing ring can be perfectly attached, the problem of poor sealing effect is solved, and the emission of waste gas is reduced.

Description

Lifting valve for heat accumulating type waste gas incinerator

Technical Field

The utility model belongs to the technical field of burn burning furnace and specifically relates to a poppet valve that is used for heat accumulation formula waste gas to burn burning furnace is related to.

Background

The Regenerative Thermal Oxidizer (RTO) is used for raising the temperature of organic waste gas discharged in production to 680-1050 ℃, directly decomposing the organic waste gas into carbon dioxide and water vapor at the high temperature, and transferring a large amount of heat energy from flue gas to a heat accumulator for heating the organic waste gas to be decomposed in the next cycle. RTO operation cost is saved, the treatment efficiency of organic waste gas can reach 95% -99%, and the method is mostly adopted for VOCs treatment of more advanced international equipment.

As technology develops and industry competes, defects in RTO poppet valves become increasingly uncovered. The common poppet valve has low efficiency and is easy to deform, thereby reducing the service life and being a difficult problem in the industry for optimizing the RTO poppet valve.

At present, RTO poppet valves mainly have two forms, one is a flat plate/disc type design, the direct contact type seal between metal and metal is pressed by mechanical pressure, which can cause disc type valve plate deformation in a short period or deformation of a position where an air pipe contacts the valve plate, the deformation means leakage, which causes high discharge of pollutants, the service life is generally no more than two years, frequent replacement and maintenance are needed, and the operation and maintenance cost is increased; another design is to use only one or two discs as valve plates to block the exhaust gas and purify the air in the same RTO tank, and this design can short-circuit the exhaust gas and the clean exhaust gas at each cycle switching, resulting in a peak value of the pollutant emission concentration in the chimney, for example, the emission peak value purification device authorized by CN201310028117.6 for regenerative incinerator, in which the valve plates are used as poppet valves, and the valve plates are frequently needed to be replaced and maintained.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the poppet valve for the heat accumulating type waste gas incinerator is not easy to deform, long in service life and high in sealing efficiency.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a poppet valve for heat accumulation formula waste gas incinerator, includes casing, driving piece, valve rod and sets up the valve body in the casing, and the driving piece is connected with the valve rod, and the valve rod stretches into the casing and can dismantle with the valve body and be connected, the valve body is circular, the valve body is hexagon or octagon along the section view on the diameter, and the driving piece passes through valve rod drive valve body along rectilinear movement, and the section view structure of valve body specifically sees the attached drawing, adopts the disk-shaped valve block among the prior art, seals on the gas outlet through the lid, if gas outlet surface unevenness, very easily with the valve block laminating incomplete, and adopt hexagon or octagon structure, convex part can stretch into in the gas outlet in the middle of the valve body to laminate with the gas outlet side.

Further, valve body surface spraying pottery forms the ceramic layer, carries out flame spraying pottery on the metallic matrix surface and is a novel material surface modification technique, strengthens the processing to the all kinds of shape part surfaces of ordinary material that work under various adverse circumstances, and punishment metal material life-span, this technique are prior art, and the purpose improves the utility model discloses high temperature resistance can.

Further, be equipped with air inlet and several gas outlet on the casing, be equipped with the sealing washer on the gas outlet, the laminating of sealing washer surface and at least one face of valve body, the trachea that waste gas burns burning furnace is connected to the air inlet, and the sealing washer improves the laminating degree, laminates with the side of the valve body outside, promptly with the valve body inclined plane unanimous can.

Further, the sealing ring is made of ceramic fiber, an existing material with high temperature resistance.

Furthermore, the number of the gas outlets is one or two, the gas outlets are concentric with the valve body and the valve rod, generally only one valve body is arranged, the valve body moves along a straight line, the two gas outlets are arranged at the two ends of the valve body, or one end of the valve body is the gas outlet, and the number of the gas outlets is determined according to the gas type of the heat storage type waste gas incinerator.

Further, the driving piece comprises a support, a cylinder and a connecting rod; the support can be dismantled with the casing and be connected, cylinder detachable sets up on the support, and the connecting rod is connected perpendicularly to the piston rod tip of cylinder, and the valve rod is connected perpendicularly to the connecting rod, and common pneumatic driving piece owing to only need the control valve body, so do not suggest to use mechanical drive or hydraulic drive.

Furthermore, the support is connected with the shell through bolts, the air cylinder is connected with the support through flanges, the bolts are connected with the flanges, the dismounting is achieved, the structure is simple, and the durability is realized.

The utility model has the advantages that: the utility model is durable, the surface of the valve body is not only coated with a high temperature resistant ceramic layer, but also the structure of the valve body is not easy to deform, and frequent replacement and maintenance are not needed; the valve body and the high-temperature-resistant sealing ring can be perfectly attached, the problem of poor sealing effect is solved, and the emission of waste gas is reduced.

Drawings

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

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a sectional view of the valve body according to embodiment 1;

fig. 4-is the embodiment 2 valve body section view.

In the figure: 1-shell, 11-air inlet, 12-air outlet, 2-driving piece, 21-support, 22-cylinder, 23-connecting rod, 3-valve rod, 4-valve body, 5-sealing ring, 6-ceramic layer.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. 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 efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1

Referring to FIGS. 1 to 3: a lift valve for a heat accumulating type waste gas incinerator comprises a shell 1, a driving piece 2, a valve rod 3 and a valve body 4 arranged in the shell 1, wherein the driving piece 2 is connected with the valve rod 3, the valve rod 3 extends into the shell 1 and is detachably connected with the valve body 4, the valve body 4 is circular, the cross section of the valve body 4 along the diameter is hexagonal, and a ceramic layer 6 is formed by spraying ceramic on the surface of the valve body 4; the shell 1 is provided with an air inlet 11 and two air outlets 12, the air outlets 12 are concentric with the valve body 4 and the valve rod 3, the air outlets 12 are provided with sealing rings 5, and the sealing rings 5 are made of ceramic fibers.

The driving part 2 comprises a support 21, a cylinder 22 and a connecting rod 23; support 21 and casing 1 can be dismantled and be connected, cylinder 22 detachable sets up on support 21, and connecting rod 23 is connected perpendicularly to cylinder 22's piston rod tip, and connecting rod 23 connects valve rod 3 perpendicularly, and support 21 and casing 1 bolted connection, cylinder 22 and support 21 flange joint.

The air inlet 11 is connected to the exhaust pipe, as shown in fig. 1, in the existing regenerative incinerator, a first regenerator, a second regenerator and a combustion chamber are at least partitioned from the inside, and a waste gas inlet pipe, an exhaust pipe, a fuel pipe and a combustion-supporting gas inlet pipe are connected to the outside, and a flow direction control valve is arranged in the waste gas inlet pipe and the exhaust pipe, and controls the air flow to be incinerated to enter the first regenerator (or the second regenerator) from the waste gas inlet pipe, and controls the air flow to enter the exhaust pipe from the second regenerator (or the first regenerator), and a waste gas inlet fan is arranged in the waste gas inlet pipe, and a combustion-supporting gas inlet fan is arranged in the combustion-supporting gas inlet pipe; a poppet valve (poppetvalve) which separates an air inlet 11 connected to the exhaust pipe, an air outlet 12 connected to the exhaust stack, and an air outlet 12 connected to a buffer pipe body, and the driving member 2 controls the lifting of the inner valve body 4 to switch the flow of air from one of the two air outlets 12.

The utility model discloses a theory of operation and application method: the utility model discloses improve conventional valve body 4, make its laminating that can be better with gas outlet 12, non-deformable to prolong life, and improved sealed efficiency, ceramic layer 6 and valve body 4 section view have improved valve body 4's intensity for hexagonal structure, sealing washer 5 set up and improved sealed efficiency with valve body 4's laminating.

The utility model discloses application method is unanimous with current application method, and the event is not done too much and is repeated.

Example 2

Referring to fig. 4, the present embodiment is different from embodiment 1 in that: the cross-sectional view of the valve body 4 in diameter is octagonal, which also improves the sealing effect, and differs from the embodiment only in shape.

The utility model discloses the quantity of gas outlet 12 also can be one, and when valve body 4 contacted with this gas outlet 12, closed the gas vent in other words, when valve body 4 left gas outlet 12, opened the gas vent in other words.

Claims

1. The utility model provides a poppet valve for heat accumulation formula waste gas burns burning furnace, includes casing (1), driving piece (2), valve rod (3) and sets up valve body (4) in casing (1), and driving piece (2) are connected with valve rod (3), and valve rod (3) stretch into casing (1) and can dismantle with valve body (4) and be connected, valve body (4) are circular, its characterized in that: the cross section of the valve body (4) along the diameter is hexagonal or octagonal.

2. A poppet valve for a regenerative type exhaust gas incinerator as claimed in claim 1 wherein: and ceramic is sprayed on the surface of the valve body (4) to form a ceramic layer (6).

3. A poppet valve for a regenerative type exhaust gas incinerator as claimed in claim 1 wherein: the valve is characterized in that the shell (1) is provided with an air inlet (11) and a plurality of air outlets (12), the air outlets (12) are provided with sealing rings (5), and the surfaces of the sealing rings (5) are attached to at least one surface of the valve body (4).

4. A poppet valve for a regenerative type exhaust gas incinerator according to claim 3 wherein: the sealing ring (5) is made of ceramic fiber.

5. A poppet valve for a regenerative type exhaust gas incinerator according to claim 3 wherein: the number of the air outlets (12) is one or two, and the air outlets (12) are concentric with the valve body (4) and the valve rod (3).

6. A poppet valve for a regenerative waste gas incinerator as claimed in any one of claims 1 to 5 wherein: the driving piece (2) comprises a support (21), a cylinder (22) and a connecting rod (23); support (21) can be dismantled with casing (1) and be connected, cylinder (22) detachable sets up on support (21), and connecting rod (23) are connected perpendicularly to the piston rod tip of cylinder (22), and valve rod (3) are connected perpendicularly to connecting rod (23).

7. A poppet valve for a regenerative type exhaust gas incinerator according to claim 6 wherein: the support (21) is connected with the shell (1) through bolts, and the cylinder (22) is connected with the support (21) through flanges.