CN217234580U

CN217234580U - Air-tight type RTO poppet valve

Info

Publication number: CN217234580U
Application number: CN202221105814.8U
Authority: CN
Inventors: 董殿波
Original assignee: Zhongke Bida Energy Saving And Environmental Protection Technology Chengdu Co Ltd
Current assignee: Zhongke Bida Energy Saving And Environmental Protection Technology Chengdu Co Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-08-19
Anticipated expiration: 2032-05-10

Abstract

The utility model discloses an air-tight type RTO poppet valve, which comprises a fixed seat, a cylinder, a valve plate and a valve body base, wherein the cylinder is arranged at the top of the fixed seat, and a telescopic rod of the cylinder extends into the fixed seat; a sliding rod group is arranged in the fixed seat, one end of the sliding rod group is connected with the cylinder telescopic rod through a shaft connector, and the valve plate is fixedly arranged on the sliding rod group; the valve body base top border department is provided with the round bounding wall, has seted up the round air guide groove on the bounding wall top end face, is provided with the round coil pipe on the outer wall of bounding wall upper portion, corresponds spaced apart a plurality of air guide channels that are equipped with the coil pipe on the air guide groove outer wall, and the air guide groove is link up with the coil pipe through air guide channel, is provided with the air supply on the coil pipe and connects. The air source connector is connected with a compressed air bottle or a high-pressure fan, when the RTO poppet valve is closed, clean air is introduced into the air guide groove, the air diffuses to two sides from a gap between the valve plate and the enclosing plate, and the air on the inner side and the outer side of the valve is completely isolated, so that the aim of zero leakage of the valve is fulfilled.

Description

Air-tight type RTO poppet valve

Technical Field

The utility model relates to a RTO exhaust-gas treatment technical field, concretely relates to airtight type RTO poppet valve.

Background

The purification treatment of industrial waste gas containing volatile organic compounds is a hot point for air pollution control. Regenerative thermal incineration (RTO) is a typical method for purifying industrial organic waste gas, and is suitable for treating industrial organic waste gas with medium and high concentration. In a regenerative thermal incineration device, an exhaust gas switching valve is one of the most important structures. The quality of the waste gas control valve directly influences the working quality of the whole RTO process. The small exhaust gas leakage greatly reduces the efficiency of exhaust gas treatment. Currently, poppet valves have gradually become the mainstream design of vent control valves in the RTO industry. Most of the existing common poppet valves are soft seals or steel plates and valve bodies are in direct contact seal. When soft sealing is adopted, the sealing gasket is greatly hinged under the influence of temperature, so that the sealing gasket is easy to age, and common soft sealing above 300 ℃ is difficult to bear. The requirement on the machining precision of the contact surface is high by adopting metal direct contact type sealing, the leakage rate can be effectively reduced only by reaching very high contact ratio, the machining and manufacturing difficulty is high, and the production cost is high. The buffer-free direct contact type sealing has the advantages that the valve plate generates metal fatigue along with the increase of the operation times, and the sealing performance is reduced even if the valve plate is slightly deformed. Moreover, the existing valve driving rod is connected directly, the requirement on the center degree is high due to hard connection, the abrasion is serious due to slight eccentricity, and a shaft and a cylinder sealing element are easy to damage, so that the normal use is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses just to prior art exist not enough, provide an airtight type RTO poppet valve.

The utility model provides an airtight type RTO poppet valve, includes fixing base, cylinder, valve plate, valve body base, the cylinder is installed in the fixing base top, and its telescopic link stretches into in the fixing base. The sliding rod group is arranged in the fixing seat, one end of the sliding rod group is connected with the cylinder telescopic rod through a shaft connector, and the valve plate is fixedly installed on the sliding rod group. The valve body base top border department is provided with the round bounding wall, round air guide groove has been seted up on the bounding wall top end face, be provided with the round coil pipe on the outer wall of bounding wall upper portion, it is equipped with a plurality of air guide channels to correspond the spaced apart position with the coil pipe on the air guide groove outer wall, and air guide groove link up with the coil pipe through air guide channel, be provided with the air supply on the coil pipe and connect.

Further, the slide bar group is including adopting the extension bar that shaft connector and cylinder telescopic link are connected, the extension bar other end adopts the axle to connect the loose joint ware and is connected with the slide bar, valve plate fixed connection is on the slide bar.

Furthermore, the center of the bottom of the fixing seat is provided with a first sliding bearing sleeve, and the sliding rod is inserted in the first sliding bearing sleeve in a sliding manner.

Further, install the support in the valve body base, install slide bearing sleeve two on the support, the slide bar slides and pegs graft in slide bearing sleeve two.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has simple structure and reasonable design, the compressed air tank and the air compressor pipeline or the high pressure fan are connected on the air source joint, when the RTO poppet valve is closed, clean air is introduced into the air guide groove, the air diffuses to both sides from the gap between the valve plate and the surrounding plate, and the air on the inner side and the outer side of the valve is completely isolated, thereby achieving the purpose of zero leakage of the valve; the sliding rod group is arranged in a segmented mode, and one segment of the sliding rod group is connected by the shaft connecting movable connector, so that the shaft connecting movable connector has the advantages that the stress centrality can be automatically corrected, and installation errors are offset; through the setting of sliding bearing cover one and sliding bearing cover two, can rectify the straightness that hangs down of slide bar.

Drawings

FIG. 1 is a schematic diagram of an open state of a hermetic seal type RTO poppet valve;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a schematic illustration of a closed state of a hermetically sealed RTO poppet valve;

FIG. 4 is an enlarged schematic view of FIG. 3 at B;

fig. 5 is an enlarged schematic view at C in fig. 3.

In the figure: the valve comprises a fixed seat 1, a sliding bearing sleeve I11, a cylinder 2, a valve plate 3, a valve body base 4, a surrounding plate 41, an air guide groove 411, an air guide channel 412, a coil pipe 42, an air source connector 43, a support 44, a sliding bearing sleeve II 45, a sliding rod group 5, an extension rod 51, a sliding rod 52, a shaft connector 53 and a shaft connecting union 54.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 work belong to the protection scope of the present invention.

Referring to fig. 1-5, an air-tight type RTO poppet valve includes a fixed seat 1, a cylinder 2, a valve plate 3, and a valve body base 4, wherein the cylinder 2 is installed on the top of the fixed seat 1, and a telescopic rod of the cylinder extends into the fixed seat 1.

The improved air valve is characterized in that a sliding rod group 5 is arranged in the fixed seat 1, one end of the sliding rod group 5 is connected with the telescopic rod of the air cylinder 2 through a shaft connector 53, and the valve plate 3 is fixedly installed on the sliding rod group 5. The sliding rod group 5 comprises an extension rod 51 connected with an extension rod of the cylinder 2 through a shaft connector 53, the other end of the extension rod 51 is connected with a sliding rod 52 through a shaft connector 54, and the valve plate 3 is fixedly connected to the sliding rod 52. The heat insulation pad can be added in the shaft connector 54, or the hollow design of the cavity is adopted, so that the heat insulation pad and the surrounding environment can be ventilated and radiated, the temperature conduction can be effectively reduced, the telescopic rod of the cylinder 2 can be kept at normal temperature, and the sealing ring of the cylinder 2 is protected and is not influenced by the temperature of the valve end.

The valve body base 4 top border department is provided with round bounding wall 41, round air guide groove 411 has been seted up on the terminal surface of bounding wall 41 top, be provided with round coil pipe 42 on the outer wall of bounding wall 41 upper portion, a plurality of air guide channel 412 have been seted up with coil pipe 42 corresponding position interval on the air guide groove 411 outer wall, air guide groove 411 link up with coil pipe 42 through air guide channel 412, be provided with air supply joint 43 on the coil pipe 42. The thickness of bounding wall 41 is 10 ~ 20mm, can be according to aperture size adjustment, and its end face turning is the horizontal plane, and air guide slot 411 is located its top surface central line, and width is 2 ~ 5mm, and air guide slot 411's degree of depth is 20 ~ 40 mm. The number of the air guide channels 412 can be 3-6, and the air guide channels are uniformly distributed.

A sliding bearing sleeve 11 is installed at the center of the bottom of the fixed seat 1, and the sliding rod 52 is inserted in the sliding bearing sleeve 11 in a sliding mode. A support 44 is arranged in the valve body base 4, a sliding bearing sleeve II 45 is arranged on the support 44, and the sliding rod 52 is inserted in the sliding bearing sleeve II 45 in a sliding manner. The support 44 may be vented to improve airflow throughput and reduce ventilation assistance.

When the valve is used, a compressed air tank and an air compressor pipeline or a high-pressure fan are connected to the air source connector 43, when the lifting valve needs to be closed, the cylinder 2 is started, the telescopic rod of the cylinder 2 stretches out to drive the sliding rod group 5 and the valve plate 3 to move downwards, the valve plate 3 covers the enclosing plate 41, clean air is introduced into the air source connector 43 through the compressed air tank and the air compressor pipeline or the high-pressure fan, the air diffuses towards two sides from a gap between the valve plate 3 and the enclosing plate 41, the air on the inner side and the outer side of the valve is forced to be completely isolated, and therefore the purpose of 0 leakage of the valve is achieved. The utility model discloses simple structure, reasonable in design connects compressed air bottle or high pressure positive blower on air supply joint 43, lets in clean gas in the air guide groove 411 after the RTO poppet valve is closed, and gas spreads to both sides from the gap department between valve plate 3 and bounding wall 41, forces the gas of the inside and outside both sides of valve to keep apart completely to reach the zero purpose of leaking of valve. The sliding rod group 5 is arranged in a segmented mode, one segment of the sliding rod group is connected through the shaft connecting union 54, and the shaft connecting union 54 has the advantages that the stress centrality can be automatically corrected, and installation errors can be offset. The perpendicularity of the slide rod 52 can be corrected by the arrangement of the sliding bearing sleeve I11 and the sliding bearing sleeve II 45.

Claims

1. An air-tight type RTO lift valve comprises a fixed seat (1), an air cylinder (2), a valve plate (3) and a valve body base (4), wherein the air cylinder (2) is installed at the top of the fixed seat (1), and a telescopic rod of the air cylinder extends into the fixed seat (1); the method is characterized in that: a sliding rod group (5) is arranged in the fixed seat (1), one end of the sliding rod group (5) is connected with a telescopic rod of the cylinder (2) through a shaft connector (53), and the valve plate (3) is fixedly arranged on the sliding rod group (5); valve body base (4) top border department is provided with round bounding wall (41), round air guide groove (411) have been seted up on bounding wall (41) top end face, be provided with round coil pipe (42) on bounding wall (41) upper portion outer wall, air guide groove (411) outer wall is gone up and is corresponded the position interval with coil pipe (42) and has been seted up a plurality of air guide channel (412), and air guide groove (411) link up with coil pipe (42) through air guide channel (412), be provided with air supply joint (43) on coil pipe (42).

2. An air-tight RTO poppet valve as claimed in claim 1, wherein: the sliding rod set (5) comprises an extension rod (51) connected with a telescopic rod of the cylinder (2) through a shaft connector (53), the other end of the extension rod (51) is connected with a sliding rod (52) through a shaft connector (54), and the valve plate (3) is fixedly connected onto the sliding rod (52).

3. An air-tight RTO poppet valve as claimed in claim 1, wherein: a sliding bearing sleeve I (11) is installed at the center of the bottom of the fixing seat (1), and the sliding rod (52) is inserted into the sliding bearing sleeve I (11) in a sliding mode.

4. A hermetically sealed RTO poppet valve as claimed in claim 1, wherein: a support (44) is installed in the valve body base (4), a sliding bearing sleeve II (45) is installed on the support (44), and the sliding rod (52) is inserted in the sliding bearing sleeve II (45) in a sliding mode.