Novel concentrated weighing hopper of charging system of blast furnace charging skip

Abstract

The utility model discloses a novel concentrated weighing hopper of a charging system of a blast furnace charging car, which comprises a hopper body used for storing materials, a discharging port is arranged on the lower side of one side wall of the hopper body, a containing space used for containing a discharging gate is arranged in the inner wall of the hopper body above the discharging port, and a guide rail is arranged on the outer side of the hopper body. A fixing plate and a baffle are arranged between the guide rail and the discharging gate, the fixing plate and the baffle are flexibly connected through a connecting piece, and the connecting piece is made of elastic materials. The upper end and the lower end of the sliding hole are provided with an upper limiting switch and a lower limiting switch respectively, and the end, away from the fixing plate, of the baffle is connected with the sliding hole in an up-down sliding mode. Through flexible connection and the sliding hole matched with the baffle, the accuracy of the position where the limiting baffle is located in the production process is guaranteed, and the situation that due to guide groove gaps on the two sides in the gate operation process, materials are clamped, the baffle crashes a limiting device and is away from a proximity switch, and consequently limiting operation is unstable is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace production, in particular to a novel centralized weighing bucket of a blast furnace charging system of a charging car. Background Art

[0002] The blast furnace charging system uses a feed car to weigh the configured raw materials through a centralized weighing bucket, then releases the materials into the feed car through a hydraulic gate and pulls them to the furnace top for loading production; the blast furnace feed car loading production and batching data must be based on the limit state of this centralized lower hopper to guide the stable production of the blast furnace charging system. Therefore, the limit stability of the hydraulic gate of the centralized bucket plays a vital role in blast furnace production.

[0003] The hydraulic gate of the centralized weighing bucket is opened and closed by the hydraulic cylinder installed on the weighing bucket. The gate is installed at the bottom of the centralized weighing bucket, and guide grooves are provided on both sides to prevent the gate from falling off. The gate is dragged up and down along the guide groove by the telescopic cylinder installed on the gate to realize the material storage function, and a limit proximity switch is provided, which is installed in the area where the gate is opened and closed, and is realized by the baffle welded on the upper part of the gate. In the actual operation process, due to many factors such as the guide groove gap on both sides of the gate and the material jamming, the baffle welded on the upper part of the gate will hit the limit proximity switch when the gate moves up and down. First, the limit proximity switch may be damaged, and second, the position of the baffle may be offset due to the impact, resulting in instability of the gate limit, which seriously affects the normal production of the blast furnace. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems. A new centralized weighing bucket of the blast furnace charge car feeding system is designed to solve the problem that the position of the baffle on the gate is offset due to factors such as material jamming, thereby causing unstable gate limit and other problems.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a novel centralized weighing hopper for a blast furnace charge car feeding system comprises a hopper body for storing materials, a discharge port is provided on the lower side of one side wall of the hopper body, a receiving space for receiving a discharge gate is provided in the inner wall of the hopper body above the discharge port, guide grooves are provided on both sides of the discharge port, the discharge gate is slidably connected to the guide grooves on both sides, a guide rail is provided on the outer side of the hopper body, a fixed plate and a baffle are provided between the guide rail and the discharge gate, a connecting piece is used to connect the fixed plate and the baffle in a soft manner, the connecting piece is made of an elastic material, and the end of the fixed plate away from the baffle is fixedly connected to the discharge gate;

[0006] The guide rail is provided with a sliding hole, an upper limit switch and a lower limit switch are respectively provided at the upper and lower ends of the sliding hole, and one end of the baffle away from the fixed plate is connected to the sliding hole in an up-and-down sliding manner.

[0007] Preferably, a cylinder drive assembly is provided on the hopper body, and an output end of the cylinder drive assembly passes through the accommodating space and is fixedly connected to the upper side of the discharge gate.

[0008] Preferably, the cylinder drive assembly is electrically connected to a controller, and the controller is electrically connected to the upper limit switch and the lower limit switch, respectively.

[0009] Preferably, a connecting plate is provided on the outer side of the hopper body, and the guide rail is vertically mounted and fixed on the connecting plate.

[0010] Preferably, the connecting piece is made of tape or rubber.

[0011] Preferably, bolt holes are provided on the baffle plate and the fixing plate, and two ends of the tape or rubber are fixedly connected to the baffle plate and the fixing plate respectively by bolts.

[0012] Compared with the prior art, the beneficial effects are:

[0013] The utility model discloses a kind of invention and the invention relates to a kind of invention that is used for the production of the material handling equipment, and the invention can realize the production of the material handling equipment by the invention, and the utility model discloses a kind of invention that is used for the production of the material handling equipment, and the utility model discloses a kind of invention that is used for the production of the material handling equipment, and the utility model discloses a kind of invention that is used for the production of the material handling equipment, and the utility model discloses a kind of invention that is used for the production of the material handling equipment, and the utility model discloses a kind of invention that is used for the production of the material handling equipment, and the utility model discloses a kind of invention that is used for the production of the material handling equipment, and the utility model discloses a kind of invention that is used for the production of the material handling equipment BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the centralized weighing bucket in the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the discharge gate during movement;

[0016] Figure 3 It is a schematic diagram of the structure of the discharge gate in the fully opened state;

[0017] Figure 4 It is a structural diagram of the discharge gate in the fully closed state.

[0018] In the figure, 1, hopper body; 101, discharge port; 102, guide groove; 103, accommodating space; 2, unloading gate; 3, cylinder drive assembly; 4, guide rail; 401, slide hole; 5, upper limit switch; 6, lower limit switch; 7, fixing plate; 8, baffle; 9, connecting piece; 10, connecting plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] During the actual operation of blast furnace charging, it was found that there are two directions to solve the instability of gate limit: the first is to transform the entire centralized weighing bucket system, but because both blast furnaces use this centralized weighing bucket to store materials, and at the same time, the actual difficulties in blast furnace production and site restrictions limit the large investment in transformation; the second is to optimize and transform the original equipment. The utility model chooses the second one, which has low cost and solves the problems in production with minimal investment. For this reason, a new centralized weighing bucket for blast furnace charge car charging system is proposed.

[0021] like Figure 1 As shown, the centralized weighing hopper mainly includes a hopper body 1, which is used to load and weigh materials. A discharge port 101 is opened on the lower side of one side wall of the hopper body 1, and a discharge gate 2 is installed at the discharge port 101. Both sides of the discharge gate 2 are slidably connected to the guide grooves 102 opened on both sides of the discharge port 101. At the same time, a accommodating space 103 for accommodating the discharge gate 2 is provided in the inner wall of the hopper body 1 above the discharge port 101. The cylinder drive assembly 3 is installed on the hopper body 1, and the output end of the cylinder drive assembly 3 is fixedly connected to the top of the discharge gate 2 in the accommodating space 103. The cylinder drive assembly 3 can control the discharge gate 2 to slide up and down along the accommodating space 103 and the guide grooves 102 on both sides of the discharge port 101 to control the discharge.

[0022] refer to Figure 1A connecting plate 10 is welded on the outside of the hopper body 1, and a guide rail 4 is vertically installed and fixed on the connecting plate 10. A rectangular and through sliding hole 401 is opened on the side of the guide rail 4, and an upper limit switch 5 and a lower limit switch 6 are respectively arranged at the upper and lower ends of the sliding hole 401; a fixing plate 7 is welded on the outer wall of the discharge gate 2, and one end of the fixing plate 7 is connected to a baffle 8 in a soft connection manner, one end of the baffle 8 is inserted into the sliding hole 401 on the guide rail 4, and can slide up and down along the sliding hole 401, and the upper limit switch 5 and the lower limit switch 6 can sense the moving position of the baffle 8.

[0023] The baffle 8 on the gate of the existing weighing hopper is directly welded to the gate, and the baffle 8 is connected to the guide rail 4 for sliding up and down, rather than being plugged in. Therefore, when material is stuck in the guide groove 102 or the gap between the gate and the hopper, the position of the gate will be offset to a certain extent, thereby causing the position of the baffle 8 to be offset to a certain extent. Since the gate is stuck, the output force of the cylinder is bound to increase, which will cause the unloading gate 2 to move too fast. The baffle 8 may directly hit the limit switch and damage the limit switch. It is also possible that the limit switch cannot accurately detect the moving position of the baffle 8 due to the offset of the position of the baffle 8.

[0024] In this solution, a two-section plate is used. The fixed plate 7 and the baffle plate 8 can be connected by a soft and tough material such as tape or rubber. Bolt holes are provided at the opposite ends of the fixed plate 7 and the baffle plate 8. The two ends of the tape or rubber are fixedly connected to the fixed plate 7 and the baffle plate 8 by bolts respectively. In this embodiment, rubber is preferably used. Rubber has good toughness, high elasticity and good buffering performance.

[0025] refer to Figure 2-Figure 4 Under normal circumstances, the fixed plate 7 and the baffle 8 are on the same horizontal plane and are perpendicular to the guide rail 4. When the cylinder drive assembly 3 drives the discharge gate 2 to move up and down, the baffle 8 will move up and down along the slide hole 401 on the guide rail 4. When the baffle 8 hits the upper limit switch 5 or the lower limit switch 6, since the fixed plate 7 and the baffle 8 are connected by a soft connection method such as tape or rubber, a certain buffering effect can be played. At this time, the impact force of the baffle 8 on the upper limit switch 5 or the lower limit switch 6 will be very small, and the limit switch will not be damaged;

[0026] At the same time, if the position of the fixed plate 7 is offset, the tape or rubber may bend and deform, and the sliding hole 401 on the guide rail 4 has a limiting effect on the baffle 8, ensuring that the baffle 8 can only move up and down. Therefore, front and back or up and down offsets may occur between the fixed plate 7 and the baffle 8, which will not affect the sliding of the baffle 8. The baffle 8 can always slide up and down along the sliding hole 401 on the guide rail 4, so that the upper limit switch 5 and the lower limit switch 6 can detect the moving position of the baffle 8.

[0027] The above-mentioned cylinder drive assembly 3 is electrically connected to the controller, and the controller controls the operation of the cylinder drive assembly 3, and the upper limit switch 5 and the lower limit switch 6 are both electrically connected to the controller. When the upper limit switch 5 and the lower limit switch 6 sense the position of the baffle 8, they will send a signal to the controller, and the controller will control the cylinder drive assembly 3 to take corresponding actions.

[0028] After installing and adjusting the upper limit switch 5 and the lower limit switch 6, when the oil cylinder drive assembly 3 retracts the discharge gate 2 and the discharge port 101 is opened, the fixed plate 7, the flexible connection and the front baffle 8 welded on the gate rise with the action of the discharge gate 2, and the baffle 8 reaches the upper limit switch 5 at the upper end of the slide hole 401 on the guide rail 4, and sends an open position signal to the controller to control the discharge gate 2 to stop moving up. After the discharge is completed, the output end of the oil cylinder drive assembly 3 extends to move the discharge gate 2 downward to close the discharge port 101, and at the same time, the fixed plate 7, the flexible connection and the front baffle 8 welded on the gate fall to the lower limit switch 6 with the action of the discharge gate 2, and the lower limit switch 6 sends a closed position signal of the discharge gate 2 to control the discharge gate 2 to stop moving downward, thereby completing the function of storing materials and signal transmission.

[0029] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.

Claims

1. A novel centralized weighing hopper for a blast furnace charging system, comprising a hopper body (1) for storing materials, a discharge port (101) being provided at the lower side of a side wall of the hopper body (1), a receiving space (103) for receiving a discharge gate (2) being provided in the inner wall of the hopper body (1) above the discharge port (101), guide grooves (102) being provided on both sides of the discharge port (101), the discharge gate (2) being slidably connected to the guide grooves (102) on both sides, and characterized in that: A guide rail (4) is arranged on the outer side of the hopper body (1); a fixed plate (7) and a baffle (8) are arranged between the guide rail (4) and the discharge gate (2); the fixed plate (7) and the baffle (8) are softly connected by a connecting piece (9); the connecting piece (9) is made of an elastic material; and one end of the fixed plate (7) away from the baffle (8) is fixedly connected to the discharge gate (2); The guide rail (4) is provided with a sliding hole (401), and an upper limit switch (5) and a lower limit switch (6) are respectively provided at the upper and lower ends of the sliding hole (401), and one end of the baffle (8) away from the fixed plate (7) is connected to the sliding hole (401) in an up-and-down sliding manner.

2. A new type of centralized weighing bucket for blast furnace charging system according to claim 1, characterized in that: The hopper body (1) is provided with a cylinder drive assembly (3), and the output end of the cylinder drive assembly (3) passes through the accommodating space (103) and is fixedly connected to the upper side of the discharge gate (2).

3. A new type of centralized weighing bucket for blast furnace charging system according to claim 2, characterized in that: The oil cylinder drive assembly (3) is electrically connected to a controller, and the controller is electrically connected to the upper limit switch (5) and the lower limit switch (6) respectively.

4. A new type of centralized weighing bucket for blast furnace charging system according to claim 3, characterized in that: A connecting plate (10) is provided on the outer side of the hopper body (1), and the guide rail (4) is vertically mounted and fixed on the connecting plate (10).

5. The novel centralized weighing bucket of the blast furnace charging system according to claim 1 is characterized in that: The connecting piece (9) is made of adhesive tape or rubber.

6. A new type of centralized weighing bucket for blast furnace charging system according to claim 5, characterized in that: Bolt holes are provided on the baffle plate (8) and the fixing plate (7), and the two ends of the tape or rubber are fixedly connected to the baffle plate (8) and the fixing plate (7) respectively by bolts.

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