CN220396503U - Lower sealing combination for top of blast furnace bell-less charging equipment - Google Patents

Abstract

The utility model relates to a lower sealing combination for a blast furnace bell-less charging device, which comprises a valve body, a sealing seat arranged in the valve body, a valve plate arranged at the bottom of the sealing seat and a connecting rod arranged on the valve plate, wherein a first chute and a second chute are arranged on the side wall of the valve body, the first chute is vertically arranged, the second chute comprises a vertical part and an arc-shaped part connected with the vertical part, a roller A and a roller B which are respectively matched with the first chute and the second chute are arranged on the connecting rod, a cam used for supporting the roller A is arranged in the first chute, and a driving device used for driving the roller A to move is connected on the connecting rod. The utility model adopts the connecting rod structure, realizes the opening and closing actions of the valve body by utilizing the guiding action of the two sliding grooves, and has smaller space for action compared with the traditional turnover type opening and closing structure, thereby being capable of effectively reducing the height of the whole device.

Description

Lower sealing combination for top of blast furnace bell-less charging equipment

Technical Field

The utility model relates to a lower sealing combination for a top of a blast furnace bell-less charging device.

Background

Bell-less charging equipment has been widely used in the field of metallurgy both at home and abroad. The sealing device mainly comprises a hopper, an upper sealing combination, a charging bucket, a lower sealing combination, a corrugated pipe and a distributing device, wherein the lower sealing combination is used for sealing the charging bucket, so that the pressure operation of the blast furnace is ensured, and the production capacity of the blast furnace can be directly influenced by the sealing performance of the sealing device.

As disclosed in the patent of CN201827386U, a connecting rod type sealing valve overcomes some drawbacks of the overturn lifting type sealing valve, but when the structure is used for sealing, the swing arm needs to continuously apply force to ensure the sealing effect between the valve plate and the valve body, once the transmission shaft loses power, the problem that the swing arm falls back slightly due to the gear error and the matching error of the gear or other transmission structures, resulting in the poor sealing effect between the valve plate and the valve body.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a lower sealing combination for the top of a blast furnace bell-less charging device, which has better sealing effect and convenient opening and can effectively reduce the structural height of the device.

The technical scheme adopted by the utility model is as follows:

the utility model provides a blast furnace does not have bell charging equipment furnace roof and uses sealed combination down, it includes the valve body, sets up the sealing seat in the valve body, installs the valve plate in sealing seat bottom and installs the connecting rod on the valve plate, is equipped with first spout and second spout on the lateral wall of valve body, first spout is vertical to be set up, and the second spout includes vertical portion and the arc portion of being connected with vertical portion, is equipped with on the connecting rod respectively be used for with first, second spout complex gyro wheel A and gyro wheel B, be equipped with in first spout and be used for propping up gyro wheel A's cam, be connected with the drive arrangement who is used for driving its motion on the connecting rod.

Further, the cam is arranged at the position of the first chute, a through groove corresponding to the first chute is arranged on the cam, and an outer protruding part of the cam is staggered with the through groove.

Further, a yielding groove for smooth rotation of the cam is formed in the first sliding groove.

Further, a connecting column A for connecting with the connecting rod is arranged on the roller A, and a connecting column B for connecting with the connecting rod is arranged on the roller B.

Further, the driving device comprises a swing arm arranged on the valve body through a first rotating shaft and a long groove arranged on the swing arm, the connecting column B is fixedly connected with the connecting rod after passing through the long groove, and the rotating shaft rotates to enable the swing arm to deflect.

Further, the installation position of the first rotating shaft and the arc-shaped part of the second sliding groove are positioned on the same side of the vertical part.

Further, the valve plate is integrally in a convex shape and is matched with the bottom of the sealing seat.

The utility model has the positive effects that:

the utility model adopts the connecting rod structure, realizes the opening and closing actions of the valve body by utilizing the guiding action of the two sliding grooves, and has smaller space for action compared with the traditional turnover type opening and closing structure, thereby being capable of effectively reducing the height of the whole device. And after the valve plate is closed, the cam positioned below the roller A can continuously provide upward force for the roller A, so that the valve plate keeps a sealing state with the sealing seat, even if the cam loses power, the condition that the valve plate falls down can not be caused, and the cam and the connecting rod can be powered off under the sealing state so as to save energy, and meanwhile, the sealing performance is ensured.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a driving apparatus according to the present utility model;

fig. 3 is a schematic view of the valve body of the present utility model in an open state.

Detailed Description

As shown in figures 1-3, the utility model provides a lower sealing combination for a blast furnace bell-less charging equipment top, which comprises a valve body 1, a sealing seat 2 arranged in the valve body 1, a valve plate 3 arranged at the bottom of the sealing seat 2, and connecting rods 4 arranged at two sides of the valve plate 3, wherein the connecting rods 4 at two sides drive the valve plate 3 to deflect. The valve is characterized in that a first chute 5 and a second chute 6 are arranged on the side wall of the valve body 1, the first chute 5 is vertically arranged, the second chute 6 comprises a vertical part and an arc-shaped part connected with the vertical part, the vertical part and the first chute 5 are positioned in the same vertical plane, a roller A11 and a roller B9 are arranged on the connecting rod 4, the roller A11 is cooperatively arranged in the first chute 5, the roller B9 is cooperatively arranged in the second chute 6, a cam 13 is arranged in the first chute 5, the connecting rod 4 moves under the action of a driving device, can move up and down along the vertical parts of the first chute 5 and the second chute, and deflects along the arc-shaped part of the second chute, so that the valve plate 3 is opened and closed. When the connecting rod 4 moves to the uppermost position, the roller A11 is located at the upper position of the cam 13, the cam 13 deflects to enable the protruding part of the cam to upwards prop up the roller A11, sealing tightness of the valve plate 3 and the sealing seat 2 is improved, and at the moment, even if a driving shaft of the cam 13 is powered off, the cam 13 can still keep an upward state, so that the connecting rod 4 is located at a high position, the valve plate 3 and the sealing seat 2 are in a close contact state, and sealing performance between the valve plate 3 and the sealing seat 2 is guaranteed.

The valve plate 3 is in a convex shape and is matched with the bottom of the sealing seat 2.

Further, in order to realize the function of the cam 13 and ensure the running state of the connecting rod 4, the cam 13 is arranged at the position of the first chute 5, a through groove 14 corresponding to the first chute 5 is arranged on the cam 13, the outer protruding part of the cam 13 is staggered with the through groove 14, when the roller A11 needs to move up and down, the direction of the through groove 14 is consistent with that of the first chute 5, the roller A11 can smoothly pass through, after the roller A11 passes through, the cam 13 rotates, the through groove 14 is staggered with the first chute 5, the length of the first chute 5 and the installation position of the cam 13 are reasonably set, and when the roller A11 is positioned below the cam 13, the roller A11 is positioned between the bottom of the first chute 5 and the cam 13 and is subjected to the pressure of the cam 13, so that the connecting rod 4 can deflect. When the roller a11 moves upward to a position above the cam 13, the valve plate 3 is tightly contacted and sealed with the sealing seat 2 after the cam 13 rotates and abuts against.

Preferably, the roller a11 is provided with a connecting column a12 for connecting to the link 4, and the roller B9 is provided with a connecting column B10 for connecting to the link 4.

The cam 13 is mounted on the second rotating shaft 16, the cam 13 is driven to rotate by the rotation of the second rotating shaft 16, and a yielding groove 15 is formed on one side of the first chute 5 so as to yield the space when the cam rotates.

The driving device comprises a swing arm 7 arranged on the valve body 1 through a first rotating shaft and a long groove 8 arranged on the swing arm 7, a connecting column B10 penetrates through the long groove 8 and is fixedly connected with the connecting rod 4, and the first rotating shaft rotates to drive the swing arm 7 to deflect. In this embodiment, the first rotating shaft is located at the left side of the vertical portion of the second chute 6, and the arc portion is also located at the left side of the vertical portion, which is beneficial to realizing the motion.

As shown in fig. 1 and 2, when the valve plate 3 is in a closed state, the swing arm 7 is in a rightward deflected state, the roller a11 is located at an upper position of the cam 13 and is supported by a boss of the cam 13, at this time, the valve plate 3 is tightly contacted with the sealing seat 2 to form a seal, even if the acting force lost by the first rotating shaft and the second rotating shaft 16 is still kept in the sealed state due to the lifting action of the cam 13, the driving structures of the first rotating shaft and the second rotating shaft 16 can be powered off to save energy, and no special requirement is required for rotation of the first rotating shaft and the second rotating shaft, so long as forward and reverse rotation can be realized, the specific form of the driving structure can be realized in the prior art, such as direct motor driving or through a crank connecting rod structure, and the like, and therefore, the detailed description is omitted.

As shown in fig. 3, when the valve plate 3 needs to be opened, firstly, the cam 13 rotates to make the direction of the through groove 14 consistent with that of the first chute 5, then the swing arm 7 deflects clockwise, the long groove 8 can give a downward force to the connecting column B10, under the guiding action of the vertical parts of the first chute 5 and the second chute 6, the valve plate 3 can move vertically downwards for a certain distance, and compared with the traditional turnover lifting mode, the friction between the sealing ring on the valve plate 3 and the sealing seat 2 is smaller, and the service life of the sealing ring can be prolonged. When the valve plate 3 moves downwards to the limit position, the roller a11 is located between the cam 13 and the bottom of the first chute 5, the cam 13 rotates, so that the position between the cam 13 and the bottom of the first chute 5 limited by the groove 14 cannot be displaced due to the stagger between the cam 13 and the first chute 5, the roller B9 enters the arc-shaped part of the second chute 5, the swing arm 7 continues to deflect, the roller B9 moves along the arc-shaped part until the roller B9 moves to the leftmost position of the arc-shaped part, and the valve plate 3 is completely opened. The length of the long groove 8 is reasonably set, so that the connecting column B can move in the long groove 8, and the connecting column B10 can be applied with force to drive the connecting rod 4 to move.

When the valve plate 3 is closed, the swing arm 7 deflects anticlockwise, so that the roller B9 returns to the position where the arc part and the vertical part are intersected, the cam 13 rotates, the direction of the through groove 14 is consistent with that of the first chute 5, then the swing arm 7 continues to deflect anticlockwise, an upward acting force is applied to the connecting column B10 to overcome the gravity of the connecting rod 4, the valve plate 3 and the like, the roller B10 moves upwards along the vertical part and the roller A11 along the first chute 5 until the roller A11 completely passes through the through groove 14, then the cam 13 rotates, the protruding part of the roller A pushes up the roller A11, the valve plate 3 and the sealing seat 2 are completely sealed, and then the driving structure of the first rotating shaft and the second rotating shaft 16 is powered off.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (7)

1. The utility model provides a blast furnace bell-less charging equipment furnace roof is with sealed combination down, its includes valve body (1), sets up sealing seat (2) in valve body (1), installs valve plate (3) and connecting rod (4) of installing on valve plate (3) in sealing seat (2) bottom, its characterized in that is equipped with first spout (5) and second spout (6) on the lateral wall of valve body (1), first spout (5) vertical setting, second spout (6) include vertical portion and the arc portion of being connected with vertical portion, be equipped with on connecting rod (4) respectively be used for with first, second spout complex gyro wheel A (11) and gyro wheel B (9), be equipped with in first spout (5) be used for propping up gyro wheel A (11) cam (13), be connected with the drive arrangement who is used for driving its motion on connecting rod (4).

2. The lower sealing combination for the blast furnace bell-less charging equipment roof according to claim 1, characterized in that the cam (13) is arranged at the position of the first chute (5), the cam (13) is provided with a through groove (14) corresponding to the first chute (5), and the outer part of the cam (13) is staggered with the through groove (14).

3. The lower sealing assembly for the top of a blast furnace bell-less charging equipment according to claim 2, characterized in that a relief groove (15) for smooth rotation of the cam (13) is provided on the first chute (5).

4. The blast furnace bell-less charging equipment top lower sealing combination according to claim 1, characterized in that a connecting column a (12) for connecting with the connecting rod (4) is provided on the roller a (11), and a connecting column B (10) for connecting with the connecting rod (4) is provided on the roller B (9).

5. The blast furnace bell-less charging equipment top lower sealing combination according to claim 4, wherein the driving device comprises a swing arm (7) installed on the valve body (1) through a first rotating shaft and a long groove (8) arranged on the swing arm (7), the connecting column B (10) is fixedly connected with the connecting rod (4) after passing through the long groove (8), and the swing arm (7) is deflected by the rotation of the first rotating shaft.

6. The lower sealing combination for the top of the blast furnace bell-less charging equipment according to claim 5, wherein the installation position of the first rotating shaft and the arc-shaped part of the second sliding groove (6) are positioned on the same side of the vertical part.

7. The lower sealing assembly for the top of a blast furnace bell-less charging equipment according to claim 1, characterized in that the valve plate (3) is integrally in a convex shape and is matched with the bottom of the sealing seat (2).