CN215336360U

CN215336360U - Pneumatic gate used in high-temperature environment

Info

Publication number: CN215336360U
Application number: CN202121088343.XU
Authority: CN
Inventors: 黄俊杰; 万厚兵; 曹俊林
Original assignee: Hubei Tianyi Machinery Co ltd
Current assignee: Hubei Tianyi Machinery Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-12-28
Anticipated expiration: 2031-05-20

Abstract

A pneumatic gate used in a high-temperature environment comprises a rack, wherein a cylinder is installed on one side of the rack, a chain is connected to the driving end of the cylinder, and the chain is assembled by bypassing a grooved wheel at the top end of the rack and then is connected with the gate; the top end of the rack is provided with a tensioning wheel assembly, and the tensioning wheel assembly tensions the chain. According to the pneumatic gate used in the high-temperature environment, the air cylinder works at a lower environment temperature, and the cost is saved.

Description

Pneumatic gate used in high-temperature environment

Technical Field

The utility model relates to a pneumatic gate, in particular to a pneumatic gate used in a high-temperature environment.

Background

Generally, a gate is added in the middle of a chute between an incinerator and a stokehole feeding device in the power generation industry and in the middle of a chute between a rotary kiln and a stokehole feeding device in the hazardous waste treatment industry, and the gate is used for isolating a large amount of air from entering the furnace or the kiln from the end of the feeding device, so that fire in the furnace or the kiln can reversely move to the feeding device, and a fire disaster is caused. Typically, such gates need to withstand temperatures of at least 300 ℃ and are subjected to ambient temperatures of greater than 60-80 ℃; meanwhile, the fire-proof device needs to be opened and closed quickly to achieve the purposes of isolating air and cutting off feeding, so that the fire-proof function is achieved.

At present, because the manual gate and the electric gate can not be opened and closed quickly, the manual gate and the electric gate are not suitable for being used as a fireproof door in the industries. Generally, a pneumatic gate is used as a fire door in the industry. The traditional pneumatic gate is a direct-connection integrated pneumatic gate, namely, a cylinder is directly arranged on the gate. It is known that the general ambient use temperature of a cylinder is not more than 80 ℃, and the use temperature of a high temperature resistant cylinder is not more than 150 ℃. The environment temperature of the pneumatic gate in the industry is more than 60-80 ℃, and a plurality of uncertain factors exist, such as that the temperature of the cylinder is increased due to the fact that heat preservation measures of a furnace or a kiln in the industry are not in place and the heat of the gate is transferred to the cylinder through heat transfer, and the temperature of the cylinder is accelerated or directly causes the sealing ring inside the cylinder to be damaged, so that the cylinder cannot be normally used, and the gate cannot be normally opened or closed. Therefore, normal production of users is influenced, maintenance work of the users is increased, and even fire problems can be caused. And the production efficiency of the user can be influenced, the use cost of the user is increased, and the potential safety hazard is increased.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the pneumatic gate used in the high-temperature environment, so that the air cylinder can work at a lower environmental temperature and can be normally used by adopting a common air cylinder, and the cost is saved for user enterprises.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a pneumatic gate used in a high-temperature environment comprises a rack, wherein a cylinder is installed on one side of the rack, a chain is connected to the driving end of the cylinder, and the chain is assembled by bypassing a grooved wheel at the top end of the rack and then is connected with the gate; the top end of the rack is provided with a tensioning wheel assembly, and the tensioning wheel assembly tensions the chain.

The gate comprises a gate frame, a roller assembly is installed on the inner wall of the gate frame along the length direction, and the gate plate is located in the gate frame and is in contact with the roller assembly.

The take-up pulley assembly is equipped with vertical guide rail including fixing the take-up pulley support frame on frame top on the take-up pulley support frame, and the take-up pulley gallows slides and sets up on vertical guide rail, and the gyro wheel is installed to take-up pulley gallows lower part, and gyro wheel and chain contact are equipped with adjusting screw above the take-up pulley gallows, and adjusting screw offsets with the take-up pulley gallows with nut threaded connection on the take-up pulley support frame.

An upper limit switch is installed on the rack, and a lower limit switch is installed on the gate.

The utility model relates to a pneumatic gate used in a high-temperature environment, which has the following technical effects:

1) because cylinder and gate are split type structure to make the gate work under high temperature environment, and the cylinder works under a lower ambient temperature, only need to use ordinary cylinder can normal use, saved purchasing cost for user enterprise, reduced use cost, guaranteed user enterprise's production efficiency.

2) The plate type chain used for lifting is used as a traction piece, so that the cost is low, the quality is reliable, the service cycle is long, and the later maintenance and replacement cost is low. The grooved pulley special for the plate-type chain is used as the guide supporting mechanism, so that the plate-type chain and the grooved pulley are in linear friction instead of surface friction in the movement process, the friction resistance is reduced, the whole opening and closing process of the gate can be smoother, the load of the cylinder is reduced, and the service life of the cylinder is prolonged; and the assembly position of the grooved pulley is adjustable, so that the telescopic direction of the cylinder can be ensured to be consistent with the lifting direction of the gate plate.

3) Through using the take-up pulley assembly, can make the board-like chain extend the back in the use, through regulating plate formula chain tensioning, make whole pneumatic gate still can normal use, need not often shut down and cut board-like chain, avoid influencing the production efficiency of user enterprise.

4) The speed regulating valve is used for regulating the telescopic speed of the cylinder, so that the opening and closing speed of the gate can be regulated.

5) The upper limit switch and the lower limit switch are used, so that the information state of the opening and closing of the gate can be seen in the central control room, and people do not need to be sent to the site to check the state of the opening and closing of the gate.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a cross-sectional view at a in fig. 1.

Fig. 3 is an enlarged view of a portion in the direction B in fig. 1.

Fig. 4 is a cross-sectional view taken along direction D in fig. 1.

Fig. 5 is a partially enlarged view of the direction C in fig. 1.

Fig. 6 is a cross-sectional view at E in fig. 1.

Fig. 7 is a cross-sectional view at F in fig. 1.

In the figure: the gate 1, the chain 2, the tensioning wheel assembly 3, the first bolt assembly 4, the grooved wheel assembly 5, the second bolt assembly 6, the cylinder head mounting plate 7, the third bolt assembly 8, the frame 9, the cylinder 10, the pneumatic circuit system 11, the cylinder bottom mounting plate 12, the fourth bolt assembly 13, the first pin 14, the cylinder joint 15, the first lock nut 16, the second pin 17, the sliding plate joint 18, the third pin 19, the cotter 20, the second lock nut 21, the fourth pin 22, the washer 23, the hexagon nut 24, the local electric cabinet 25, the upper limit switch 26, the lower limit switch 27, the electromagnetic directional valve 1101, the muffler 1102, the speed regulating valve 1103, the air supply triplet 1104, the quick connector 1105, the PU pipe 1106, the cylinder self-contained regulating nut 1001, the gate frame 101, the roller assembly 102, the gate 103, the passage 104, the support frame 301, the vertical guide rail 302, tension pulley hanger 303, roller 304, adjusting screw 305, nut 306.

Detailed Description

As shown in FIG. 1, the pneumatic lock gate for high temperature environment comprises a frame 9, a cylinder 10 is installed on one side of the frame 9, and the cylinder body of the cylinder 10 is connected with a pneumatic circuit system 11. The driving end of the cylinder 10 is connected with the chain 2, and the chain 2 is connected with the gate 1 after bypassing the grooved wheel assembly 5 at the top end of the rack 9; when the cylinder 10 stretches, the gate 1 is lifted to complete opening and closing.

The arrangement form of the support 9 in the device is not limited to be arranged in parallel with the gate 1, and the support can be designed to be arranged at a certain included angle with the gate 1 according to the actual requirements of project sites. The device only needs to ensure that the telescopic direction of the cylinder is consistent with the lifting direction of the gate plate of the gate 1, and the plate type chain does not have the twisting phenomenon in the operation process.

As shown in fig. 1, the lock gate 1 includes a lock gate frame 101, and the lock gate frame 101 is mounted on a passage 104. The inner wall of the gate frame 101 is installed with a roller assembly 102 in a length direction, and the shutter 103 is positioned in the gate frame 101 and contacts the roller assembly 102. When the shutter 103 moves up and down, rolling friction is generated between the shutter and the roller assembly 102, and resistance is reduced.

Because the channel 104 is an inclined plane, the bottom surface of the gate 1 is also set to be an inclined plane when being installed, the bottom surface of the gate 1 and the inclined plane of the channel 104 are on the same plane, and materials do not have blocking phenomenon when passing through the inclined plane at the bottom of the gate 1.

As shown in fig. 1 and 7, the chain 2 is a plate-type chain, and the sheave assembly 5 special for the plate-type chain and the plate-type chain is used as a guide support mechanism, so that the plate-type chain and the sheave are in linear friction rather than surface friction in the movement process, the friction resistance is reduced, the whole opening and closing process of the gate can be smoother, the load of the cylinder is reduced, and the service life of the cylinder is prolonged.

As shown in fig. 1 and 6, a tension pulley assembly 3 is mounted at the top end of the frame 9, and the tension pulley assembly 3 tensions the chain 2. The tensioning wheel assembly 3 comprises a tensioning wheel support frame 301 fixed at the top end of the frame 9, a vertical guide rail 302 is arranged on the tensioning wheel support frame 301, a tensioning wheel hanger 303 is arranged on the vertical guide rail 302 in a sliding mode, a roller 304 is installed on the lower portion of the tensioning wheel hanger 303, the lower end of the roller 304 is in contact with the chain 2, an adjusting screw 305 is arranged above the tensioning wheel hanger 303, and the adjusting screw 305 is in threaded connection with a nut 306 welded on the tensioning wheel support frame 301 and abuts against the tensioning wheel hanger 303. The tension pulley hanger 303 and the roller 304 are integrally moved up and down by the adjusting screw 305 and the chain 2, respectively. When the chain 2 is slack, the roller 304 is moved down to press against the chain 2 and tension the chain 2 by rotating the adjusting screw 305. When the chain 2 is tensioned more, the adjusting screw 305 can be rotated reversely, so that the roller 304 moves upward and the chain 2 is loosened properly.

The installation process comprises the following steps:

1) and installing a cylinder: as shown in fig. 1, the frame 9 is installed on the on-site pre-buried foundation, the cylinder head mounting plate 7 is welded on the frame 9, and then the head of the cylinder 10 is fixed on the cylinder head mounting plate 7 by the third bolt assembly 8. As shown in FIG. 5, the tail of the cylinder 10 is connected with the cylinder bottom mounting plate 12 by a fourth pin 22, and is fixed by a gasket 23 and a hexagon nut 24 to form a hinge structure. As shown in fig. 3, the cylinder head 15 is then screwed into the head of the cylinder 10, and the installation angle is adjusted. Cylinder bottom mounting plate 12 is then secured to frame 9 with fourth bolt assembly 13 as shown in fig. 1.

2) Installing a grooved pulley and a tensioning wheel: as shown in fig. 1, 2 grooved pulley assemblies 5 are respectively fixed at two ends of a frame 9 by second bolt assemblies 6, at the moment, bolts are not screwed, and are screwed after the telescopic direction of a cylinder is adjusted to meet the consistent lifting direction of a flashboard. The tensioning wheel assembly 3 is then fixed to the frame 9 at an intermediate position by the first bolt assembly 4 for adjusting the tension of the plate chain 2.

3) And installing a chain: as shown in fig. 4, one end of the plate chain is connected with the sliding plate joint 18 by a pin shaft, and then is fixed by a second lock nut 21; the slide plate coupling 18 is then connected to the shutter plate 103 in the gate 1 by the third pin 19 and fixed by the cotter pin 20. As shown in fig. 1, the other end of the chain 2 is then sequentially passed upward through the upper portion of the first sheave, the lower portion of the roller, the upper portion of the second sheave, and then downward to the head of the cylinder 10. As shown in fig. 3, the plate chain is connected to the cylinder head 15 at the one end by a first pin 14 and fixed by a first lock nut 16. Then, the installation position of the sheave assembly 5 is adjusted so that the directions of the plate-type chain on the cylinder side and the gate side are parallel, and then the second bolt assembly 6 is tightened to fix the sheave assembly 5 on the frame 9. Then adjust the upper and lower position of gyro wheel through adjusting screw 305 among the rotation take-up pulley assembly 3 to adjust the whole rate of tension of plate chain, after adjusting the rate of tension of plate chain, then upwards screw up the adjusting nut 1001 of cylinder from the area, play the self-locking function.

4) And gas circuit installation: the method comprises the steps of firstly installing a silencer 1102 and a quick connector 1105 on an electromagnetic directional valve 1101, then sequentially installing the electromagnetic directional valve 1101, a speed regulating valve 1103 and an air source triplet 1104 on a rack 9, then connecting the electromagnetic directional valve 1101 and the speed regulating valve 1103 in pairs by using a PU pipe 1106, finally connecting the electromagnetic directional valve 1101 with an air cylinder 10 by using the PU pipe 1106, and finally connecting the air inlet end of the speed regulating valve 1104 with an air source pipe of a user.

5) And circuit installation: upper limit switch 26 is attached to frame 9, and lower limit switch 27 is attached to gate 1. Finally, control cables of the electromagnetic directional valve 1101, the upper limit switch 26 and the lower limit switch 27 are connected to the on-site electric control box 25, and the lifting and descending actions of the whole pneumatic gate are controlled from a central control room DCS lead to the on-site electric control box 25 (with a DCS remote control interface).

The working principle is as follows: according to the working principle that the fixed pulley is time-saving, labor-saving and convenient when a hoisting object is hoisted, the chain 2 (plate type chain) for hoisting between the cylinder 10 and the gate 1 is used as a traction piece, the two grooved wheels are assembled 5 to be used as a guide supporting mechanism, the telescopic direction of the cylinder 10 is consistent with the lifting direction of the gate plate of the gate, and the pushing force and the pulling force generated by the cylinder 10 and the gravity of the gate plate are utilized, so that the action state of opening and closing the gate is achieved.

The cylinder and the gate are in a split structure and are not in direct contact, so that the heat transfer of the gate to the cylinder can be ignored; meanwhile, the cylinder is far away from the heat source body of the furnace or kiln, so that the cylinder works at a lower ambient temperature, the cylinder in the patent can be normally used by adopting a common cylinder, and the cost is saved for user enterprises.

Claims

1. A pneumatic gate for use in high temperature environments, comprising: the gate comprises a rack (9), wherein a cylinder (10) is installed on one side of the rack (9), a chain (2) is connected to the driving end of the cylinder (10), and the chain (2) is connected with a gate (1) after bypassing a grooved wheel assembly (5) at the top end of the rack (9); and a tensioning wheel assembly (3) is installed at the top end of the rack (9), and the tensioning wheel assembly (3) tensions the chain (2).

2. A pneumatic gate for use in high temperature environments, as defined in claim 1, wherein: the gate (1) comprises a gate frame (101), a roller assembly (102) is installed on the inner wall of the gate frame (101) along the length direction, and the gate plate (103) is located in the gate frame (101) and is in contact with the roller assembly (102).

3. A pneumatic gate for use in high temperature environments, as defined in claim 1, wherein: the tensioning wheel assembly (3) comprises a tensioning wheel support frame (301) fixed to the top end of the frame (9), a vertical guide rail (302) is arranged on the tensioning wheel support frame (301), a tensioning wheel hanging bracket (303) is arranged on the vertical guide rail (302) in a sliding mode, a roller (304) is installed on the lower portion of the tensioning wheel hanging bracket (303), the roller (304) is in contact with the chain (2), an adjusting screw rod (305) is arranged above the tensioning wheel hanging bracket (303), and the adjusting screw rod (305) is in threaded connection with a nut (306) on the tensioning wheel support frame (301) and abuts against the tensioning wheel hanging bracket (303).

4. A pneumatic gate for use in high temperature environments, as defined in claim 1, wherein: an upper limit switch (26) is installed on the rack (9), and a lower limit switch (27) is installed on the gate (1).