CN103146862B - Horizontal short type emptying valve - Google Patents

Abstract

The invention discloses a horizontal short type emptying valve which comprises a box body, a funnel arranged in the box body, and a first valve plate and a second valve plate that are connected under the funnel; the horizontal short type emptying valve also comprises a first connecting rod actuating mechanism and a second connecting rod actuating mechanism which are respectively connected to the first valve plate and the second valve plate, as well as a single-cylinder driving device used for driving the first connecting rod actuating mechanism and the second connecting rod actuating mechanism at the same time; and the single-cylinder driving device is connected at the outer side of the box body. The horizontal short type emptying valve is simple and compact, and equipment is easy to maintain and replace.

Description

A horizontal low type discharge valve

technical field

The invention relates to a discharge valve, in particular to a horizontal low type discharge valve used in blast furnace ironmaking equipment.

Background technique

The discharge valve is a device that controls the falling or stopping of the material received by the hopper on the blast furnace top equipment. At present, in many domestic blast furnace projects, users often impose restrictions on the total height of the furnace top equipment in order to control costs. Based on this requirement, we have developed a A discharge valve that can effectively reduce the overall height of furnace roof equipment - a new type of discharge valve. Compared with the current design of traditional discharge valves, the total height of the valve itself can be reduced by 300-500mm, and the diameter of the valve port of the valve can be changed. The height of the valve body is hardly affected.

As shown in FIG. 1 and FIG. 2 , it is a structural schematic diagram of a discharge valve in the prior art. Specifically, the discharge valve includes a funnel 1', the first valve plate 2' is connected to the first crank arm 3' by bolts, the second valve plate 7' is connected to the second crank arm 6' by bolts, and the first crank arm 6' is connected by bolts. The arm 3' is connected with the hollow shaft 4', and the second crank arm 6' is connected with the solid shaft 5', and the solid shaft and the hollow shaft are driven to rotate through the oil cylinder, thereby driving the crank arm to swing and realize the opening and closing of the valve.

However, this type of discharge valve has the following disadvantages:

1. The valve plate rotates around the shaft and has a large opening radius, which leads to an increase in the height and width of the shell, and the overall height of the furnace top equipment also increases;

2. Since the valve plate drives the solid shaft and the hollow shaft through the oil cylinder to realize the opening and closing action, it is difficult to ensure the same opening degree of the valve plate;

3. The structure of the hollow shaft and the solid shaft is complicated, which makes the maintenance of the equipment complicated;

4. As the diameter of the valve port changes, the height of the valve body changes greatly;

To sum up, the traditional discharge valve needs to be improved technically.

Contents of the invention

The technical problem to be solved by the present invention is to provide a horizontal low type discharge valve, which is simple and compact, and the equipment is easy to maintain and replace.

In order to achieve the above object, the present invention provides a horizontal low type discharge valve, which includes a box body, a funnel arranged inside the box body, and a first valve plate and a second valve plate connected below the funnel. The horizontal low type discharge valve also includes: a first connecting rod actuator and a second connecting rod actuator, which are connected to the first valve plate and the second valve plate respectively; and are used to simultaneously drive the first connecting rod actuator and the single-cylinder driving device of the second connecting rod actuator are connected to the outside of the box body.

Further, the single-cylinder driving device includes: an oil cylinder for providing driving force; an oil cylinder bracket for installing the oil cylinder, which is arranged in the middle of the outer side of the box; and a flat head, which is connected to the top of the oil cylinder directly above the .

Further, the single-cylinder driving device also includes: a second connecting rod, one end of which is connected to the left side of the flat head; a third connecting rod, one end of which is connected to the right side of the flat head; the first connecting rod a rod, one end of which is connected to the other end of the second link; and a fourth link, one end of which is connected to the other end of the third link.

Further, a first arm frame is connected under the first valve plate, and a second arm frame is connected under the second valve plate.

Further, the first link actuator includes: a sixth link, one end of which is connected to the first link through a fourth shaft, and the other end of which is connected to the first boom through a second shaft; and One end of the fifth connecting rod is connected with the first arm frame through the first shaft, and the other end is connected with the box body through the third shaft.

Further, a second support is provided on the outside of the fourth shaft, and a first support is provided on the outside of the third shaft.

Further, the second link actuator includes: a seventh link, one end of which is connected to the fourth link through a fifth shaft, and the other end of which is connected to the second boom through an eighth shaft; and The eighth connecting rod, one end of which is connected with the second arm frame through the seventh shaft, and the other end of which is connected with the box body through the sixth shaft.

Further, a fourth support is provided on the outside of the fifth shaft, and a third support is provided on the outside of the sixth shaft.

Further, the flat head is also provided with a pin shaft, and the box body is also provided with a proximity switch bracket, and the proximity switch bracket is arranged corresponding to the pin shaft, wherein the upper and lower ends of the proximity switch bracket A first proximity switch and a second proximity switch for sending out induction signals are respectively arranged at the positions.

According to the horizontal low type discharge valve of the present invention, an oil cylinder drives the valve plate to open and close. The valve plate is opened and closed different from the conventional discharge valve, that is, a crank arm drives a circular movement around a circle center, but by Two curved arms drive the valve plate, which reduces the space required for the path of the valve plate when it is opened and closed, thus greatly reducing the height and width dimensions of the equipment.

When the oil cylinder opens and closes the valve plate to the predetermined position, the proximity switch sends out an induction signal. The automatic control system determines that the oil cylinder is in place according to the induction signal sent by the proximity switch, and sends out a control signal to stop the oil cylinder, so as to realize the control of each action of the valve plate. Precise control.

Description of drawings

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. in:

Fig. 1-2 is the structural representation of the discharge valve in the prior art;

Fig. 3 is a structural schematic diagram of a horizontal low type discharge valve according to the present invention, wherein the first valve plate and the second valve plate are in an open position;

Fig. 4 is a longitudinal sectional view of Fig. 3;

Fig. 5 is a structural schematic diagram of a horizontal low type discharge valve according to the present invention, wherein the first valve plate and the second valve plate are in a closed position;

Fig. 6 is a longitudinal sectional view of Fig. 5;

Fig. 7 is a partial schematic view of the horizontal low type discharge valve according to the present invention, wherein the position where the pin shaft is close to the first proximity switch is shown;

Fig. 8 is a partial schematic view of the horizontally low type discharge valve according to the present invention, wherein the position where the pin shaft is close to the second proximity switch is shown; and

Fig. 9 is a schematic perspective view of a horizontal low type discharge valve according to the present invention.

Detailed ways

In the following, the present invention will be specifically described through exemplary embodiments. It is to be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.

Referring to Fig. 3 and Fig. 4, it shows a horizontal low type discharge valve V according to the present invention, which can be arranged on blast furnace ironmaking equipment. The horizontal low type discharge valve V includes a box body 1, a funnel 1a disposed inside the box body, and a first valve plate 16 and a second valve plate 18, respectively connected below the funnel 1a.

It is worth pointing out that the horizontal low type discharge valve V also includes: a first linkage actuator e1 and a second linkage actuator e2, which are respectively connected to the first valve plate 16 and the second valve plate 18 for controlling The opening and closing of the first valve plate 16 and the second valve plate 18; and the single-cylinder driving device D for simultaneously driving the first link actuator e1 and the second link actuator e2, wherein the single-cylinder drive device D is connected to the outside of the box body 1 .

The single-cylinder driving device D of the horizontal low type discharge valve includes: an oil cylinder 6 for providing driving force; an oil cylinder bracket 7 for installing the oil cylinder 6, which is arranged in the middle of the outer side of the box body 1; and a flat The head 8 is connected directly above the top of the oil cylinder 6 .

The single-cylinder driving device D of the horizontal low type discharge valve V also includes: the second connecting rod 5 and the third connecting rod 9, which are respectively connected to both sides of the flat head 8; the first connecting rod 4, which is connected to the One side of the second connecting rod 5 ; and a fourth connecting rod 10 connected to one side of the third connecting rod 9 .

It should be noted that the first arm frame 15 is connected under the first valve plate 16 , and the second arm frame 19 is connected under the second valve plate 18 .

Furthermore, the first connecting rod actuator e1 includes: a sixth connecting rod 14, one end of which is connected to the first connecting rod 4 through a fourth shaft 25, and the other end of which is connected to the first connecting rod 4 through a second shaft 23. The first boom 15 is connected; and the fifth connecting rod 13 , one end of which is connected with the first boom 15 through the first shaft 22 , and the other end is connected with the box body 1 through the third shaft 24 .

At the same time, a second support 3 is provided on the outside of the fourth shaft 25 , and a first support 2 is provided on the outside of the third shaft 24 .

Similarly, the second connecting rod actuator e2 includes: a seventh connecting rod 20, one end of which is connected to the fourth connecting rod 10 through the fifth shaft 26, and the other end of which is connected to the second connecting rod through the eighth shaft 29. and the eighth connecting rod 21 , one end of which is connected with the second arm frame 19 through the seventh shaft 28 , and the other end is connected with the box body 1 through the sixth shaft 27 .

Meanwhile, the fourth support 12 is provided on the outside of the fifth shaft 26 , and the third support 11 is provided on the outside of the sixth shaft 27 .

Next, the entire action process of opening and closing the horizontally low type discharge valve of the present invention will be described in detail. First, the rod chamber of the oil cylinder 6 gets oil, and by driving the flat head 8, it drives the first connecting rod 4, the second connecting rod 5, the third connecting rod 9, and the fourth connecting rod 10 to move, so that the fourth shaft 25 and the second connecting rod The five-axis 26 rotates, thereby driving the sixth connecting rod 14 and the seventh connecting rod 20 to move, the second shaft 23 and the eighth shaft 29 respectively drive the first boom 15 and the second boom 19 to move, and finally drive the first valve The plate 16 and the second valve plate 18 effect the opening action. During the opening process, the valve plate not only rotates around the fourth axis 25 and the fifth axis 26 respectively, but also its motion track is also constrained by the fifth connecting rod 13 and the eighth connecting rod 21 respectively, so that the first valve plate 16 And when the second valve plate 18 is opened, the required space is reduced, and the height and width of the valve body are reduced. The closing actions of the first valve plate 16 and the second valve plate 18 are just opposite.

In order to better control the various actions of the process interlocking control valve plate, the flat head 8 is also provided with a pin shaft 31, and the box body 1 is also provided with a proximity switch bracket 32, which is connected to the proximity switch bracket 32. The pin shafts 31 are arranged correspondingly, wherein the upper and lower ends of the proximity switch bracket 32 are respectively provided with a first proximity switch 32a and a second proximity switch 32b for sending induction signals.

It should be understood that when the oil cylinder drives the connecting rod to open and close the valve plate to a predetermined position, the proximity switch sends out an induction signal, and the automation control system performs process interlocking control according to the induction signal sent by the proximity switch.

Next, with reference to FIGS. 7-8 and 9 , the automatic control process will be described in detail. When the first valve plate 16 and the second valve plate 18 are opened in place, the pin shaft 31, driven by the oil cylinder 6, is close to the first proximity switch 32a to reach the sensing distance, so that the first proximity switch 32a sends an induction signal, and the automatic control system The sensing signal received determines that the valve plate is fully opened.

When the first valve plate 16 and the second valve plate 18 are closed in place, the pin shaft 31, driven by the oil cylinder 6, approaches the second proximity switch 32b to reach the sensing distance, so that the second proximity switch 32b sends an induction signal, and the automatic control system The sensing signal received determines that the valve plate is closed properly.

To sum up, according to the present invention, the horizontal low type discharge valve has many advantages as follows:

1. The action of the valve plate is driven by a single cylinder, and the two connecting rods jointly restrict the action path of the valve plate, which can greatly reduce the height and width of the valve body.

2. Since the joints of each connecting rod are connected by bolts, the connecting rods can be disassembled when the bolts are removed, so when the valve plate is opened, the operator can install and adjust the valve plate at the inspection door without entering the equipment. Maintenance is simple.

3. Due to the use of two connecting rods to restrict the action structure of the valve plate, even if the size of the valve plate increases, the height of the valve body will not change greatly, saving resources and improving market competitiveness.

4. The proximity switch is used to send the signal, which is reliable in use.

5. The new discharge valve has reliable transmission and accurate action, which can fully meet the technological requirements of the blast furnace.

It can be understood that the present invention is described through some embodiments, and those skilled in the art know that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, the features and examples may be modified to adapt a particular situation and material to the teachings of the invention without departing from the spirit and scope of the invention. Therefore, the present invention is not limited by the specific embodiments disclosed here, and all embodiments falling within the scope of the claims of the present application belong to the protection scope of the present invention.

Claims (8)

1. A horizontal low type discharge valve (V), comprising a casing (1), a funnel (1a) arranged inside the casing, and a first valve plate (16) connected below the funnel (1a) ) and the second valve plate (18), it is characterized in that, described horizontal low type discharging valve also comprises: The first connecting rod actuator (e1) and the second connecting rod actuator (e2) are respectively connected to the first valve plate (16) and the second valve plate (18), the lower part of the first valve plate (16) A first arm frame (15) is connected, and a second arm frame (19) is connected below the second valve plate (18); and A single-cylinder driving device (D) for simultaneously driving the first link actuator (e1) and the second link actuator (e2) is arranged outside the box (1). 2. The horizontal low type discharge valve according to claim 1, characterized in that, the single-cylinder driving device (D) comprises: An oil cylinder (6) for providing driving force; An oil cylinder bracket (7) for installing the oil cylinder is arranged in the middle of the outside of the box; and The flat head (8) is connected directly above the top of the oil cylinder (6). 3. The horizontal low type discharge valve as claimed in claim 2, characterized in that, the single-cylinder driving device (D) also includes: The second connecting rod (5), one end of which is connected to the left side of the flat head (8); The third connecting rod (9), one end of which is connected to the right side of the flat head (8); a first link (4), one end of which is connected to the other end of the second link (5); and A fourth connecting rod (10), one end of which is connected to the other end of the third connecting rod (9). 4. The horizontal low type discharge valve according to claim 3, characterized in that, the first linkage actuator (e1) comprises: The sixth connecting rod (14), one end of which is connected with the first connecting rod (4) through the fourth shaft (25), and the other end is connected with the first boom (15) through the second shaft (23) ;as well as One end of the fifth connecting rod (13) is connected with the first boom (15) through the first shaft (22), and the other end is connected with the box body (1) through the third shaft (24). 5. The horizontal low type discharge valve according to claim 4, characterized in that, the outside of the fourth shaft (25) is also provided with a second support (3), the third shaft (24) The outside is also provided with a first support (2). 6. The horizontal low type discharge valve according to claim 3, characterized in that, the second linkage actuator (e2) comprises: The seventh connecting rod (20), one end of which is connected with the fourth connecting rod (10) through the fifth shaft (26), and the other end is connected with the second boom (19) through the eighth shaft (29) ;as well as One end of the eighth connecting rod (21) is connected with the second arm frame (19) through the seventh shaft (28), and the other end is connected with the box body (1) through the sixth shaft (27). 7. The horizontal low type discharge valve according to claim 6, characterized in that, the outside of the fifth shaft (26) is also provided with a fourth support (12), the sixth shaft (27) The outside is also provided with a third support (11). 8. The horizontal low type discharge valve according to claim 6, characterized in that, the flat head (8) is also provided with a pin shaft (31), and the box body (1) is also provided with a proximity switch Bracket (32), the proximity switch bracket (32) is set corresponding to the pin shaft (31), wherein the upper and lower ends of the proximity switch bracket (32) are respectively provided with a first proximity switch for sending an induction signal switch (32a) and a second proximity switch (32b).