Continuous mixer cover plate

Abstract

The application discloses a continuous mixer cover plate which is arranged on a stirring tank of a continuous mixer; an inner side wall of the continuous mixer cover plate is flush with an inner side wall of the stirring tank, a connecting position of the continuous mixer cover plate and the stirring tank is provided with a sealing rubber plate; the continuous mixer cover plate is composed of an inlet cover plate and an inspection section cover plate, a sealing sponge rubber strip is arranged between the inlet cover plate and the inspection section cover plate; the inlet cover plate is internally provided with a triangular-section distribution mechanism composed of two distribution plates, a spraying water pipe is arranged on the top of the inlet cover plate along a central axis of the continuous mixer cover plate; the top of the inspection section cover plate is provided with a mounting seat arranged along the central axis of the continuous mixer cover plate, a main water pipe is arranged on the mounting seat, a plurality of branch pipes which are arranged into the stirring tank are arranged on the main water pipe, and rotating nozzles are arranged on the bottom of the branch pipes; and the main water pipe and the spraying water pipe are connected through a hose.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mine engineering equipment, and particularly relates to a continuous mixer cover plate. BACKGROUND

[0002] At present, in the field of mine engineering, full tailings paste filling is widely used, and the commonly used mixer for full tailings paste filling is a continuous horizontal double-shaft mixer. In order to ensure the overall forming effect of the slurry in the mixer and prevent the tailings cement slurry remaining in the inner wall of the mixing tank body and the upper cover plate from solidifying and scabbing during the mixing process, the junction between the mixing tank body and the upper cover plate of the continuous horizontal double-shaft mixer is usually provided with a water pipe surrounding the top of the mixing tank body. The water pipe is provided with a water outlet on the inner side of the tank body, and a fixed conical nozzle is arranged at the water outlet to spray conical water flow to the tank side wall and the mixing shaft for cleaning.

[0003] The current mechanism has the following problems:

[0004] 1. The cover plate is installed in sections, and there is no effective sealing between the sectional cover plates, which causes dust leakage during the use of the mixer. The daily maintenance and cleaning require disassembly of the sectional cover plates, which is inconvenient for maintenance.

[0005] 2. The inner side of the cover plate is not aligned with the inner side of the tank body, and there is a dead angle for accumulation of materials, and the nozzle water flow cannot reach the place. After long-term accumulation of materials in this place, it is difficult to clean.

[0006] 3. The nozzle is a fixed conical nozzle, and the spraying position and area are fixed, which cannot achieve full-area cleaning of the inner side of the mixing tank body, and manual cleaning is still required. The spraying water flow of the nozzles on both sides interferes with each other, which reduces the cleaning effect of the nozzles.

[0007] 4. The falling direction of the slurry at the cover plate inlet is opposite to the rotating direction of the mixing shaft, which has a reverse impact on the driving system of the mixing equipment, affecting the service life of the driving system. On the other hand, the mixing mechanism continuously pushes the slurry forward, and the light part of the slurry (such as cement and fly ash) will not enter the bottom of the tank body to participate in the mixing movement, but will move directly to the discharge port under the axial pushing action of the mixing paddle, reducing the overall mixing effect. SUMMARY

[0008] The present application aims to overcome the shortcomings of the prior art and provide a continuous mixer cover plate.

[0009] In order to achieve the above-mentioned purpose, the technical scheme provided by the present application is as follows:

[0010] The continuous mixer cover plate is arranged on the continuous mixer stirring tank; the inner side wall of the continuous mixer cover plate is flush with the inner side wall of the stirring tank, and the connection part of the continuous mixer cover plate and the stirring tank is provided with a sealing rubber plate (25); the continuous mixer cover plate is composed of an inlet cover plate (11) and an inspection section cover plate (12), and a sealing sponge rubber strip (14) is arranged between the inlet cover plate (11) and the inspection section cover plate (12); the inlet cover plate (11) is internally provided with a distribution mechanism with a triangular cross section composed of two distribution plates (26), and the top of the inlet cover plate (11) is provided with a spraying water pipe (1) arranged along the central axis of the continuous mixer cover plate; the top of the inspection section cover plate (12) is provided with a mounting seat (15) arranged along the central axis of the continuous mixer cover plate, the mounting seat (15) is provided with a main water pipe (6), a plurality of branch pipes extending into the stirring tank are arranged on the main water pipe (6), and the bottom of the branch pipe is provided with a rotating spray head (7); the main water pipe (6) and the spraying water pipe (1) are connected through a hose (5).

[0011] Preferably, the top edges of the two distribution plates (26) meet at the central position of the upper part of the continuous mixer cover plate; and the distribution plates (26) are located below the spraying water pipe (1).

[0012] Preferably, the bottom of the inlet cover plate (11) is provided with a rubber baffle (13).

[0013] Preferably, the two sides of the inlet cover plate (11) are provided with A inspection doors (17).

[0014] Preferably, the inlet cover plate (11) is provided with a pressing plate (3), and the spraying water pipe (1) is fixed on the inlet cover plate (11) through the pressing plate (3).

[0015] More preferably, the pressing plate (3) is provided with an A sealing rubber ring (2), and the mounting seat (15) is provided with a B sealing rubber ring (16).

[0016] Preferably, the top of the spraying water pipe (1) is provided with an arc-shaped baffle (24).

[0017] Preferably, the spraying water pipe (1) is provided with an A electromagnetic water valve (4); the main water pipe (6) is provided with a B electromagnetic water valve (8), a filter (9) is arranged on the water inlet pipeline of the main water pipe (6), and pressure gauges (10) are arranged on the two sides of the filter (9).

[0018] Preferably, the inspection section cover plate (12) is provided with B inspection doors (18) and observation doors (19); the two sides of the B inspection doors (18) are provided with safety lock air springs (20) and proximity switches (21).

[0019] Preferably, the end of the maintenance section cover plate (12) is provided with a dust suction port (22), and the dust suction port (22) is provided with a cover plate (23).

[0020] The application will be further described below:

[0021] In the application, the whole cover plate assembly is divided into two sections, and the butt joint position of the two sections is sealed by pressing a sponge rubber strip.

[0022] The triangular distribution mechanism in the inlet cover plate can distribute the incoming slurry, and the slurry flows to the area under the rotating and pressing of the stirring paddle, so that the material quickly enters the central intersection area of the two stirring shafts, improving the stirring effect. At the same time, since the flow direction is the same as the rotation direction of the stirring shaft, the impact on the driving system can be reduced, and the service life of the driving system can be improved. The rubber baffle at the bottom of the inlet cover plate can reduce the splashing of incoming materials and the escape of powder into the stirring tank. The maintenance doors are provided on both sides of the inlet cover plate, which facilitates the cleaning of the inside of the inlet section. The spray pipe provided at the middle position of the top of the inlet cover plate can cover the entire area inside the inlet section for cleaning. The arc-shaped guard plate provided at the top of the spray pipe can prevent the spray pipe from being damaged by the continuous washing of the incoming slurry. The spray pipe is fixed on the inlet cover plate by a pressing plate, and a rubber ring is pressed to achieve sealing. The spray pipe is connected to an electromagnetic water valve to realize the on-off purpose of water flow.

[0023] The maintenance section cover plate is provided with a large maintenance door and an observation door, which are both sealed by pressing a circle of sponge rubber ring when closed. The maintenance doors on both sides are provided with safety lock gas springs and equipped with contact type proximity switches, which can improve the convenience and safety of equipment maintenance. The tail end of the maintenance section cover plate is provided with two dust suction ports, which are sealed by a cover plate and a sealing ring. When necessary, external dust removal equipment can be connected. The main water pipe is provided at the middle axis position of the top of the maintenance section cover plate, and the main water pipe is connected to the spray pipe through a hose. The main water pipe is connected to the maintenance section cover plate through a mounting seat, and a rubber ring is pressed to achieve sealing. The water flow control of the main water pipe is realized by an electromagnetic water valve. Multiple branch pipes can be provided on the main water pipe as needed, and the bottom of the branch pipes is connected to a 360° rotating spray head, which can realize 360° spherical cleaning. The spraying range is shown in the schematic diagram, which can realize the cleaning of the entire area of the internal surface of the tank body and the cover plate. A filter is also provided on the water inlet pipe of the main water pipe, and pressure gauges are provided on both sides of the filter. The filter can filter large particles and prevent the spray head from being blocked by impurities. By detecting the values of the pressure gauges on both sides, it can be known whether the filter is blocked and the filter element needs to be replaced.

[0024] Compared with the prior art, the application has the following advantages:

[0025] 1. The cover plate features a two-section design, with sealing gaskets installed at the joints between the two sections and at the connection point with the tank body to effectively prevent dust from escaping from the tank. Both sections of the cover plate are equipped with large inspection doors, allowing for cleaning and maintenance of the tank interior. Safety limit switches are installed at the inspection doors; the mixer automatically stops when the door is opened, ensuring personnel safety.

[0026] 2. The inner wall of the cover plate is flush with the inner wall of the tank, eliminating dead corners for material accumulation and reducing the cleaning effort of the tank.

[0027] 3. Multiple 360° rotatable nozzles are arranged along the center line of the cover plate, enabling 360° cleaning of the mixing tank and the interior of the cover plate for a more thorough cleaning. A rinsing water pipe is also installed at the discharge port, reducing the labor intensity and frequency of manual cleaning. Using fewer nozzles achieves tank cleaning, saving on procurement costs compared to the original method. Compared to the original rinsing method, this method requires less water, saving on operating costs.

[0028] 4. A triangular-section material distribution mechanism is installed at the discharge port of the cover plate. The incoming slurry is separated and falls into the pressure area of ​​the agitator blades on both sides. The material flow direction is consistent with the rotation direction of the agitator shaft, which can reduce the impact on the agitator drive system. Under the rotation of the agitator shaft, the feed material flow quickly enters the intersection area between the two shafts, where the material is fully kneaded, sheared, and squeezed, improving the mixing effect. At the same time, it can also prevent light dust materials (such as cement) from being carried and encapsulated by the upper layer of flowing slurry into the discharge area. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the continuous mixer cover plate described in this invention;

[0030] Figure 2 This is a schematic diagram of the side structure of the continuous mixer cover plate of the present invention, including a partial enlarged view of section II;

[0031] Figure 3 for Figure 2 A magnified view of a section at point I;

[0032] Figure 4 for Figure 2 AA cross-section view.

[0033] In the figure: 1, water spraying pipe; 2, A sealing rubber ring; 3, pressing plate; 4, A electromagnetic water valve; 5, hose; 6, main water pipe; 7, rotating nozzle; 8, B electromagnetic water valve; 9, filter; 10, pressure gauge; 11, inlet cover plate; 12, maintenance section cover plate; 13, rubber baffle; 14, sealing sponge rubber strip; 15, mounting seat; 16, B sealing rubber ring; 17, A maintenance door; 18, B maintenance door; 19, observation door; 20, air spring with safety lock; 21, proximity switch; 22, dust suction port; 23, cover plate; 24, arc-shaped guard plate; 25, sealing rubber plate. DETAILED DESCRIPTION

[0034] The application will be further described below in connection with the accompanying drawings and examples.

[0035] Example 1

[0036] Reference Figures 1 to 4 The continuous mixer cover plate is arranged on the mixing tank of the continuous mixer; the inner side wall of the continuous mixer cover plate is flush with the inner side wall of the mixing tank, and the connecting part of the continuous mixer cover plate and the mixing tank is provided with a sealing rubber plate 25; the continuous mixer cover plate is composed of an inlet cover plate 11 and a maintenance section cover plate 12, and a sealing sponge rubber strip 14 is arranged between the inlet cover plate 11 and the maintenance section cover plate 12; the inlet cover plate 11 is internally provided with a triangular cross-section distribution mechanism composed of two splitter plates 26, the top of the inlet cover plate 11 is provided with a water spraying pipe 1 arranged along the central axis of the continuous mixer cover plate; the top of the maintenance section cover plate 12 is provided with a mounting seat 15 arranged along the central axis of the continuous mixer cover plate, the mounting seat 15 is provided with a main water pipe 6, the main water pipe 6 is provided with a plurality of branch pipes which extend into the mixing tank, and the bottom of the branch pipes is provided with rotating nozzles 7; the main water pipe 6 and the water spraying pipe 1 are connected through a hose 5.

[0037] The top edges of the two flow distribution plates 26 meet at the middle axis of the upper part of the continuous mixer cover plate; the flow distribution plates 26 are located below the spraying water pipe 1. The bottom of the inlet cover plate 11 is provided with a rubber baffle 13. The two sides of the inlet cover plate 11 are provided with A access doors 17. The inlet cover plate 11 is provided with a pressing plate 3, and the spraying water pipe 1 is fixed on the inlet cover plate 11 through the pressing plate 3. The pressing plate 3 is provided with an A sealing rubber ring 2, and the mounting seat 15 is provided with a B sealing rubber ring 16. The top of the spraying water pipe 1 is provided with an arc-shaped guard plate 24. The spraying water pipe 1 is provided with an A electromagnetic water valve 4; the main water pipe 6 is provided with a B electromagnetic water valve 8, and the water inlet pipeline of the main water pipe 6 is provided with a filter 9, and the two sides of the filter 9 are provided with pressure gauges 10. The maintenance section cover plate 12 is provided with B access doors 18 and observation doors 19; the two sides of the B access doors 18 are provided with safety lock air springs 20 and proximity switches 21. The end of the maintenance section cover plate 12 is provided with a dust suction port 22, and the dust suction port 22 is provided with a cover plate 23.

Claims

1. A cover plate for a continuous mixer, wherein the cover plate is disposed on the mixing tank of a continuous mixer; characterized in that, The inner wall of the continuous mixer cover plate is flush with the inner wall of the mixing tank, and a sealing rubber plate (25) is provided at the connection between the continuous mixer cover plate and the mixing tank; the continuous mixer cover plate is composed of an inlet cover plate (11) and a maintenance section cover plate (12), and a sealing sponge strip (14) is provided between the inlet cover plate (11) and the maintenance section cover plate (12); the inlet cover plate (11) is provided with a triangular material distribution mechanism composed of two diversion plates (26), and the incoming slurry is separated and falls to the downward pressure area of ​​the mixing shaft blades on both sides, and the material flow direction is consistent with the rotation direction of the mixing shaft; the top of the inlet cover plate (11) is provided with a spray water pipe (1) arranged along the central axis of the continuous mixer cover plate; the top of the maintenance section cover plate (12) is provided with a spray water pipe (1) arranged along the central axis of the continuous mixer cover plate. A mounting base (15) is arranged along the central axis. The mounting base (15) is provided with a main water pipe (6). The main water pipe (6) is provided with several branch pipes that extend into the mixing tank. The bottom of the branch pipe is provided with a rotating nozzle (7). The main water pipe (6) and the spray water pipe (1) are connected by a hose (5). The top edges of the two diversion plates (26) meet at the central axis position above the continuous mixer cover. The diversion plate (26) is located below the spray water pipe (1). The maintenance section cover (12) is provided with a B maintenance door (18) and an observation door (19). The B maintenance door (18) is provided with a safety lock air spring (20) and a proximity switch (21) on both sides. The maintenance section cover (12) is provided with a dust suction port (22) at the end. The dust suction port (22) is provided with a cover plate (23).

2. The continuous mixer cover plate as described in claim 1, characterized in that, The bottom of the feed inlet cover (11) is provided with a rubber baffle (13).

3. The continuous mixer cover plate as described in claim 1, characterized in that, The feed inlet cover (11) is provided with inspection doors (17) on both sides.

4. The continuous mixer cover plate as described in claim 1, characterized in that, The feed inlet cover (11) is provided with a pressure plate (3), and the spray pipe (1) is fixed on the feed inlet cover (11) by the pressure plate (3).

5. The continuous mixer cover plate as described in claim 4, characterized in that, The pressure plate (3) is provided with a sealing ring A (2), and the mounting base (15) is provided with a sealing ring B (16).

6. The continuous mixer cover plate as described in claim 1, characterized in that, The top of the spray pipe (1) is provided with an arc-shaped protective plate (24).

7. The continuous mixer cover plate as described in claim 1, characterized in that, The spray pipe (1) is equipped with an A electromagnetic water valve (4); the main water pipe (6) is equipped with a B electromagnetic water valve (8); the inlet pipe of the main water pipe (6) is equipped with a filter (9); and pressure gauges (10) are provided on both sides of the filter (9).

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