RT0 thermal oxidation furnace switching valve with high-stability sealing device

Abstract

The utility model relates to an RT0 thermal oxidation furnace switching valve with a high-stability sealing device, which comprises a valve body, a sealing action mechanism fixed in the valve body and a control pipe fixed at the upper end of the sealing action mechanism, and a hot air channel can be quickly sealed to close the valve during switching through the well-designed sealing action mechanism. A special sealing action mechanism can ensure that the central position of the valve body is in positive pressure, waste gas is further prevented from passing through, a sealing ring is ensured to be tightly attached to the inner wall in the valve body, and sealing reliability is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of waste gas treatment especially relates to a RT0 heat oxidation furnace switching valve with high stable sealing device. BACKGROUND

[0002] Under the background of rapid development of today's industry, as an important industrial equipment, the heat oxidation furnace plays a key role in many fields such as chemical industry, environmental protection, energy and so on. The normal operation of the heat oxidation furnace is of great significance to improve production efficiency, reduce environmental pollution and ensure the effective use of energy. In the operation process of the heat oxidation furnace, the switching valve plays a crucial role. It is responsible for controlling the opening and closing of the hot gas passage, ensuring that the heat oxidation furnace can work according to the predetermined process requirements. However, the existing heat oxidation furnace switching valve has a series of problems in the sealing performance. When switching, fast and reliable switching is crucial, and the existing switching valve for rto heat oxidation furnace has advantages and disadvantages, and the switching valve with high sealing performance often has limited switching speed, which cannot respond in time, increasing the risk of waste gas leakage. The leakage of waste gas not only affects the normal operation efficiency of the heat oxidation furnace, but also may cause pollution to the surrounding environment, which does not meet the environmental protection requirements. For example, the patent with publication number CN209512046U discloses a reversing valve suitable for three-chamber and more than three-chamber heat accumulation type thermal oxidizer, which still has the following shortcomings in the field of waste gas treatment: the switching speed of the actuator is not fast enough, and the sealing stability is not high. SUMMARY

[0003] (I) Technical problems solved

[0004] In view of the shortcomings of the prior art, the utility model aims at providing a RT0 heat oxidation furnace switching valve with high stable sealing device, which solves the problems in the prior art. The sealing action mechanism is carefully designed to quickly seal the hot gas passage and close the valve when switching. The special sealing action mechanism can ensure that the center position of the valve body is under positive pressure, further prevent waste gas from passing through, and ensure that the sealing ring tightly contacts the inner wall of the valve body, ensuring the reliability of the sealing.

[0005] (II) Technical solutions

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a RT0 heat oxidation furnace switching valve with high stable sealing device, comprising a valve body, a sealing action mechanism fixed in the valve body and a control pipe fixed on the upper end of the sealing action mechanism.

[0007] The sealing action mechanism comprises a fixed sleeve, guide columns installed on the side surface of the fixed sleeve, springs installed on the side surface of the fixed sleeve, a moving sleeve installed on the side surface of the spring, a sealing sleeve fixed on the side surface of the moving sleeve and a sealing ring fixed on the outside of the sealing sleeve.

[0008] Preferably, the upper end of the side end surface of the fixed sleeve is provided with an air inlet, the lower end is provided with two air outlets, the front surface is provided with a first spring groove, the first spring groove is uniformly circumferentially arranged, and the first spring groove is provided with a first guide column hole.

[0009] Preferably, the front surface of the moving sleeve is provided with a second spring groove and a second guide column hole corresponding to the first spring groove and the first guide column hole, and the front surface of the moving sleeve is fixedly provided with an air groove.

[0010] Preferably, the top of the valve body is provided with an air inlet, the inside of the valve body is fixedly provided with a sealing plate, the middle of the valve body is fixedly provided with a first baffle, and the two sides of the first baffle are fixedly provided with second baffles.

[0011] Preferably, the first baffle and the second baffle are both provided with air holes.

[0012] Preferably, the sealing plate is provided with a sealing groove.

[0013] (Three) beneficial effects

[0014] The utility model discloses a RT0 thermal oxidation furnace switching valve with high stable sealing device, which adopts a carefully designed sealing action mechanism to quickly seal the hot gas channel and close the valve during switching, effectively prevents hot gas leakage, ensures the normal operation of the thermal oxidation furnace, improves the work efficiency, and the special sealing action mechanism can ensure that the center position of the valve body is under positive pressure, further prevents waste gas from passing through, greatly reduces the risk of waste gas leakage, and improves the safety and environmental protection of the thermal oxidation furnace, which is an innovative technology with wide application prospect. ACCURACY OF DRAWINGS

[0015] Figure 1 It is the overall schematic view of the utility model.

[0016] Figure 2 It is the schematic view of the sealing action mechanism in the utility model.

[0017] Figure 3 It is the schematic view of the fixed sleeve in the utility model.

[0018] Figure 4 It is the schematic view of the moving sleeve in the utility model.

[0019] Figure 5 It is the schematic view of the valve body in the utility model.

[0020] Figure 6The utility model discloses a valve body inside detail's schematic view.

[0021] In the drawing: 1-valve body, 101-inlet hole, 102-sealing plate, 103-first baffle, 104-second baffle, 105-vent hole, 106-sealing groove, 2-sealing action mechanism, 201-fixed cover, 2011-inlet, 2012-exhaust port, 2013-first spring groove, 2014-first guide column hole, 202-guide column, 203-spring, 204-movement cover, 2041-second spring groove, 2042-second guide column hole, 2043-gas groove, 205-sealing cover, 206-sealing ring, 3-control pipe. DETAILED DESCRIPTION

[0022] Below will be combined with the utility model example in the attached Figure 1 -attached Figure 6 The technical scheme in the utility model embodiment is clearly and completely described, obviously, the described embodiment only is a part of embodiment of the utility model, is not all embodiment, on the basis of the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor are within the scope of the utility model protection.

[0023] As Figure 1 The utility model provides a kind of technical scheme a RT0 thermal oxidation furnace switching valve with high stable sealing device, it is characterized in that, including valve body 1, fixed in the 2 of valve body 1 interior and fixed on the control pipe 3 of sealing action mechanism 2 upper end;Valve body 1 as the shell of entire device, provides installation and support basis for other parts, simultaneously forms the working space of sealing device, controls the flow channel of waste gas, sealing action mechanism 2 cooperates with valve body 1, so that sealing can reliably and quickly carry out, control pipe 3 connects external control system, transmission control signal and control gas, control the working state of sealing action mechanism 2, by receiving external control signal, sealing action mechanism 2 is provided with control gas, realizes the quick switching and sealing function of sealing action mechanism 2, ensure the high stability sealing of thermal oxidation furnace switching valve.

[0024] As Figure 2As shown, the sealing action mechanism 2 includes a fixed sleeve 201, guide columns 202 mounted on the side of the fixed sleeve 201, springs 203 mounted on the side of the fixed sleeve 201, a moving sleeve 204 mounted on the side of the spring 203, a sealing sleeve 205 fixed on the side of the moving sleeve 204, and a sealing ring 206 fixed outside the sealing sleeve 205; the fixed sleeve 201 provides a mounting base for other components of the sealing action mechanism 2, the side guide columns 202 and springs 203 and other components are fixed and positioned through the fixed sleeve 201, the guide columns 202 play a guiding role when the sealing action mechanism 2 moves, ensuring the accuracy and stability of the movement, preventing the moving sleeve 204 from shifting or shaking during movement, ensuring the reliability of the sealing action, the springs 203 ensure that the moving sleeve 204 is in a position that is in close contact with the fixed sleeve 201 when the sealing action mechanism 2 does not need to close the valve, ensuring smooth gas flow, connecting the sealing sleeve 205 and the spring 203 and other components, moving when the sealing action mechanism 2 works, driving the sealing sleeve 205 and the sealing ring 206 to realize the sealing function, the sealing sleeve 205 is tightly attached to the inner wall of the valve body 1 under the action of the sealing action mechanism 2, realizing effective sealing, the sealing ring 206 directly contacts the inner wall of the valve body 1, forming a seal to prevent exhaust gas from passing through, ensuring the reliability of the seal, preventing exhaust gas leakage, and ensuring the normal operation of the thermal oxidation furnace.

[0025] As shown in Figure 3 The upper end of the side end face of the fixed sleeve 201 is provided with an air inlet 2011, the lower end is provided with two air outlets 2012, and the front face is provided with a first spring groove 2013, the first spring groove 2013 is uniformly circumferentially arranged, and the first spring groove 2013 is provided with a first guide column hole 2014 in the gap; the air inlet 2011 at the upper end of the side end face receives control gas, and the two air outlets 2012 at the lower end are used to discharge gas. The first spring groove 2013 arranged uniformly on the front face and the first guide column hole 2014 arranged in the gap provide mounting positions for the spring 203 and the guide column 202, respectively, ensuring stable operation of the spring and the guide column, the air inlet 2011 and the air outlet 2012 are arranged in a staggered manner, the air inlet is closer to the center position of the valve body 1, ensuring that the air outlet 2012 is covered when the moving sleeve 204 is reset but the air inlet 2011 is not covered, such a design can make the moving sleeve 204 move quickly under the action of high-pressure air, and after sealing is completed, high-pressure air fills the center position of the valve body 1 to form a positive pressure, preventing gas leakage.

[0026] As shown in Figure 4As shown, the moving sleeve 204 is provided with a second spring slot 2041 and a second guide column hole 2042 corresponding to the first spring slot 2013 and the first guide column hole 2014 on the front side, and the moving sleeve 204 is fixed with an air slot 2043 on the front side; the second spring slot 2041 and the second guide column hole 2042 on the front side cooperate with the corresponding parts on the fixed sleeve to ensure the normal work of the spring 203 and the guide column 202. The air slot 2043 fixed on the front side is used to accept the pressure energy of the air inlet 2011, which is converted into kinetic energy, so as to move quickly and close the valve, and at the same time cooperate with the air inlet 2011 and the air outlet 2012, so that when the air slot 2043 moves to the sealing position, the gas in the air slot 2043 is released into the valve body 1, forming a positive pressure.

[0027] As shown in Figure 5 , the valve body 1 is provided with an air inlet hole 101 at the top, the valve body 1 is fixed with a sealing plate 102 inside, the valve body 1 is fixed with a first baffle 103 in the middle, and the first baffle 103 is fixed with a second baffle 104 on both sides; the air inlet hole 101 communicates with the air inlet 2011 for receiving high-pressure air from outside into the sealing action mechanism 2, the sealing plate 102 inside cooperates with the sealing action mechanism 2 to play a sealing role, preventing waste gas leakage, and the first baffle 103 and the second baffle 104 are used to support the sealing action mechanism 2.

[0028] As shown in Figure 6 , the first baffle 103 and the second baffle 104 are both provided with air holes 105; the air holes 105 ensure the passage of high-pressure air, so that the inside of the valve body 1 maintains a positive pressure, further compresses the sealing action mechanism 2 and the sealing plate 102, and prevents gas leakage.

[0029] As shown in Figure 6 , the sealing plate 102 is provided with a sealing groove 106, and the shape of the sealing groove 106 is matched with the shape of the front end of the sealing sleeve 205, which can further prevent gas from passing through and guide the movement of the sealing sleeve 205.

[0030] The sealing action mechanism 2 is connected to the tail and moves to both ends of the valve body 1 for sealing.

[0031] Working principle:

[0032] The control pipe 3 is first connected with the external high-pressure gas source, when the device needs to be closed, the external gas source is turned on, the high-pressure gas enters the sealing action mechanism 2 through the control pipe 3, at this time, the gas groove 2043 in the sealing action mechanism 2 and the fixed sleeve 201 form a relatively closed space, the high-pressure gas pushes the gas groove 2043 to move to both ends, thereby pushing the sealing sleeve 205, the front end of the sealing sleeve 205 enters the sealing groove 106, the sealing ring 206 is tightly attached to the sealing plate 102, and the sealing is completed, in the process that the gas groove 2043 moves to both ends, the exhaust port 2012 that is originally blocked by the gas groove 2043 is exposed, the gas is exhausted to the outside, the high-pressure gas is filled between the two sealing plates 102, the inside is kept in positive pressure, and the sealing performance is strengthened, when the device needs to be opened, the external high-pressure gas source is unloaded, and the spring 203 drives the moving sleeve 204 to reset.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A switching valve for an RTO thermal oxidizer with a highly stable sealing device, characterized in that, It includes a valve body (1), a sealing action mechanism (2) fixed inside the valve body (1), and a control tube (3) fixed at the upper end of the sealing action mechanism (2); The sealing mechanism (2) includes a fixed sleeve (201), a guide post (202) installed on the side of the fixed sleeve (201), a spring (203) installed on the side of the fixed sleeve (201), a moving sleeve (204) installed on the side of the spring (203), a sealing sleeve (205) fixed on the side of the moving sleeve (204), and a sealing ring (206) fixed on the outside of the sealing sleeve (205).

2. The RTO thermal oxidizer switching valve with a highly stable sealing device according to claim 1, characterized in that, The fixed sleeve (201) has an air inlet (2011) at the upper end and two exhaust ports (2012) at the lower end. A first spring groove (2013) is provided on the front. The first spring groove (2013) is uniformly circumferentially arranged, and a first guide post hole (2014) is provided in the gap of the first spring groove (2013).

3. The RTO thermal oxidizer switching valve with a highly stable sealing device according to claim 1, characterized in that, The front of the motion sleeve (204) has a second spring groove (2041) and a second guide post hole (2042) corresponding to the first spring groove (2013) and the first guide post hole (2014), and the front of the motion sleeve (204) has an air groove (2043) fixed thereon.

4. The RTO thermal oxidizer switching valve with a highly stable sealing device according to claim 1, characterized in that, The valve body (1) is provided with an air inlet (101) at the top, a sealing plate (102) is fixed inside the valve body (1), a first baffle (103) is fixed in the middle of the valve body (1), and a second baffle (104) is fixed on both sides of the first baffle (103).

5. The RTO thermal oxidizer switching valve with a highly stable sealing device according to claim 4, characterized in that, Both the first baffle (103) and the second baffle (104) are provided with ventilation holes (105).

6. The RTO thermal oxidizer switching valve with a highly stable sealing device according to claim 4, characterized in that, The sealing plate (102) is provided with a sealing groove (106).

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