Mesh screen device for screening raw materials for sodium silicate production

Abstract

The utility model discloses a mesh screen device for screening raw materials for sodium silicate production, which relates to the field of sodium silicate production equipment and comprises a sealing box, a first screen surface is slidably assembled in the sealing box along the horizontal direction, guide rails are arranged on the front side and the rear side of the first screen surface, and the first screen surface is slidably assembled on the guide rails. The guide rail comprises a horizontally-arranged linear part, a descending part which is downwards and obliquely arranged is installed at the tail end of the linear part, an ascending part which is of a C-shaped structure is installed at the tail end of the descending part, the tail end of the ascending part extends to the position above the linear part, and the tail end of the ascending part is connected with the tail end of the linear part through a returning part; and the first screen surface reciprocates along the guide rail. By means of the mode that materials are thrown away in the reciprocating motion process, static electricity is reduced, blockages can be removed in time in the screening process, it is guaranteed that screening holes are kept unblocked, practicability is improved, and the device is suitable for screening operation of sodium silicate raw materials.

Description

Technical Field

[0001] The utility model relates to the field of sodium silicate production equipment, in particular to a mesh screen device for screening raw materials used in sodium silicate production. Background Art

[0002] In the production of sodium silicate, raw material screening is a critical step in ensuring product quality. Typically, screening devices use a sieve surface to separate the raw materials, separating materials larger than the sieve openings from smaller particles. However, this screening design has significant shortcomings in practice, especially when processing materials like sodium silicate that are prone to static electricity.

[0003] Raw materials accumulate on the screen surface, especially those particles larger than the screen holes stay on the screen surface for a long time, resulting in multiple frictions with the screen surface. Since sodium silicate has certain electrical insulation properties, static electricity is easily generated during the friction process. The accumulation of static electricity will cause fine particles to adhere to the screen surface, blocking the screen holes, and ultimately affecting the screening effect, making the screening process incomplete and unable to effectively separate raw materials of different particle sizes. Based on this, we propose a mesh screen device for screening raw materials for sodium silicate production. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned prior art, the utility model provides a mesh screen device for screening raw materials used in sodium silicate production.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mesh screen device for screening raw materials for sodium silicate production, comprising a sealed box, a first screen surface being slidably mounted in the interior of the sealed box in a horizontal direction, guide rails being arranged on the front and rear sides of the first screen surface, the first screen surface being slidably mounted on the guide rails, the guide rails comprising a horizontally arranged straight portion, a downwardly inclined descending portion being mounted at the end of the straight portion, an ascending portion having a C-shaped structure being mounted at the end of the descending portion, and the end of the ascending portion extending to above the straight portion, the end of the ascending portion being connected to the end of the straight portion through a return portion; the first screen surface makes reciprocating motion along the guide rails, and during the resetting process, the material is thrown up by the limiting guides of the descending portion, the ascending portion and the return portion.

[0006] Preferably, the first screen surface includes a frame, a screen is installed inside the frame, and sliders are installed at the four corners of the frame, and the sliders are slidably assembled in corresponding guide rails.

[0007] Preferably, a baffle is rotatably mounted on the end of the return portion, and a torsion spring is sleeved on the hinge shaft of the baffle; the torsion spring pushes the baffle in a direction away from the straight portion.

[0008] Preferably, a connecting plate is installed at the right end of the frame, a connecting frame is rotatably connected to the connecting plate, a connecting rod is installed at the other end of the connecting frame, and a rotatable turntable is also included, the upper edge of the turntable is fixedly connected to the connecting rod.

[0009] Preferably, the turntable is arranged in the mounting seat, a reduction motor is installed in the mounting seat, and the motor shaft of the reduction motor is fixedly connected to the axis of the turntable.

[0010] Preferably, the mounting seat is slidably mounted on the second frame, and an electric cylinder is further mounted on the second frame, and a piston rod of the electric cylinder is fixedly connected to the mounting seat.

[0011] Preferably, a feed port located above the first screen surface is installed at the upper end of the sealed box, a coarse material outlet is installed at the side of the sealed box, and a fine material outlet is installed at the lower end surface of the sealed box.

[0012] Compared with the prior art, the present invention provides a mesh screen device for screening raw materials for sodium silicate production, which has the following beneficial effects:

[0013] (1) In the present invention, by setting a guide rail, the first screen surface generates an upward flying action during the resetting process. The sodium silicate raw material is temporarily separated from the first screen surface by inertia, which reduces the contact time between the raw material particles and the screen surface and reduces the accumulation of static electricity. In addition, the position of the materials will change during the flying process, which is beneficial to the subsequent screening operation. In addition, the materials will impact the first screen surface during the falling process, further reducing the probability of the materials adhering to the screen holes and ensuring the smooth flow of the screen holes.

[0014] (2) The reciprocating motion of the first screen surface is achieved by setting a turntable and a connecting rod structure. In the early stage of screening of sodium silicate raw materials, the first screen surface can only perform linear reciprocating motion in the straight part, thereby preventing part of the raw materials from directly falling out of the first screen surface and improving the screening accuracy.

[0015] (3) By setting a rotatable baffle to ensure that the slider enters the correct slide rail component, the stability of the first screen mesh in reciprocating motion along the slide rail is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a partial cross-sectional structural diagram of the mesh device for screening raw materials for sodium silicate production in the embodiment;

[0018] Figure 2 Schematic diagram of the structure of the first screen surface in the embodiment;

[0019] Figure 3 Schematic diagram of the structure of the guide rail in the embodiment;

[0020] Figure 4 This is a schematic diagram of the assembly of the baffle in the embodiment;

[0021] Figure 5 Schematic diagram of the distribution of various structures on the mounting base in the embodiment.

[0022] In the figure: 1. Sealing box; 2. Guide rail; 21. Straight part; 22. Descending part; 23. Ascending part; 24. Return part; 241. Baffle; 3. First screen surface; 31. Frame; 32. Screen; 33. Slider; 34. Connecting plate; 35. Connecting frame; 36. Connecting rod; 37. Turntable; 38. Mounting seat; 39. Electric cylinder; 4. Feed inlet; 5. Coarse material outlet; 6. Fine material outlet. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0024] This embodiment provides a mesh screen device for screening raw materials for sodium silicate production, such as Figures 1 to 5As shown, it includes a sealing box 1, the interior of which is equipped with a first screen surface 3 that slides horizontally, a feeding port 4 located above the first screen surface 3 is installed at the upper end of the sealing box 1, a coarse material outlet 5 is installed on the side of the sealing box 1, and a fine material outlet 6 is installed on the lower end surface of the sealing box 1. The sodium carbonate raw material is poured onto the first screen surface 3 through the feeding port 4, and the sodium carbonate raw material is quickly screened by the first screen surface 3 by performing a linear reciprocating motion. The part with a larger particle size in the raw material cannot pass through the screen hole and is gathered in the coarse material outlet 5 for discharge, and the part with a smaller particle size in the raw material passes through the screen hole and is gathered in the fine material outlet 6 for discharge. However, in actual application, since the particles of the sodium carbonate raw material are small and have irregular surfaces, when they accumulate on the screen surface and pass through the first screen surface 3, multiple frictions will occur between the particles and between the particles and the screen surface. This friction process is not It will not only lead to a decrease in screening efficiency, but also easily generate static electricity on the material and the screen surface. The accumulation of static electricity causes fine particles to adhere to the screen surface, further blocking the screen holes. For this reason, we add a throwing process to the return and reset stage of the linear reciprocating motion of the first screen surface 3, so that the first screen surface 3 forms an action of throwing the material upward during the reset process, thereby temporarily separating the sodium silicate raw material from the screen surface, reducing the contact time between the raw material particles and the screen surface, and reducing the accumulation of static electricity. At the same time, the sodium silicate raw material can be thrown back during the throwing process to break up the aggregation of the materials, which is beneficial to the subsequent material screening operations. In addition, the material can exert a downward force on the screen surface during the descent process, causing the screen surface to vibrate, thereby shaking off part of the material adhering to the lower end surface of the first screen surface 3, which is beneficial to keeping the screen holes unobstructed.

[0025] Specifically, guide rails 2 are arranged on the front and rear sides of the first screen surface 3, and the first screen surface 3 is slidably assembled on the guide rails 2. The guide rail 2 includes a horizontally arranged straight portion 21, and a downwardly inclined descending portion 22 is installed at the end of the straight portion 21. An ascending portion 23 with a C-shaped structure is installed at the end of the descending portion 22, and the end of the ascending portion 23 extends to the top of the straight portion 21. The end of the ascending portion 23 is connected to the end of the straight portion 21 through the return portion 24; the first screen surface 3 includes a frame body 31, and a screen 32 is installed inside the frame body 31. Slide blocks 33 are installed at the four corners of the frame body 31, and the slide blocks 33 are slidably assembled in the corresponding guide rails 2. When the slider 33 enters the ascending portion 23 from the descending portion 22, the left end of the first screen surface 3 begins to move upward, and the material on the screen surface also moves upward. When the slider 33 enters the returning portion 24 from the ascending portion 23, the left end of the first screen surface 3 begins to move downward and reset, while the material continues to move upward due to inertia. When the slider 33 enters the straight portion 21 from the returning portion 24, part of the material falls onto the first screen surface 3 for subsequent screening, and the remaining material will fall out of the first screen surface 3 and gather in the coarse material outlet 5. It should be noted that during the entire linear reciprocating process, the right side of the first screen surface 3 is always in the straight portion 21, and the material is thrown up during the resetting process by the limiting guide of the descending portion 22, the ascending portion 23 and the returning portion 24. In this embodiment, a second screen surface is provided inside the sealing box 1 , and the second screen surface is connected to the end of the first screen surface 3 . The material falling from the first screen surface 3 slides through the inclined surface of the second screen surface to the coarse material outlet 5 .

[0026] On the basis of the above scheme, in order to prevent the slider 33 from directly entering the return portion 24 from the straight portion 21, we rotatably install a baffle 241 at the end of the return portion 24, and a torsion spring (not shown in the figure) is sleeved on the hinge shaft of the baffle 241. In the initial state, the torsion spring pushes the baffle 241 in the direction away from the straight portion 21, so that the end of the return portion 24 is closed, and the slider 33 can only enter the descending portion 22 from the straight portion 21. When the slider 33 enters the straight portion 21 from the return portion 24, the baffle 241 is pressed and rotated in the direction close to the straight portion 21, so that the head end of the descending portion 22 is blocked. At this time, the slider 33 smoothly enters the straight portion 21 from the return portion 24.

[0027] In addition, the linear reciprocating motion of the first screen surface 3 is driven by a turntable and connecting rod structure. Specifically, a connecting plate 34 is installed at the right end of the frame 31, and a connecting frame 35 is rotatably connected to the connecting plate 34. The other end of the connecting frame 35 is installed with a connecting rod 36. It also includes a rotatable turntable 37. The upper edge of the turntable 37 is fixedly connected to the connecting rod 36. The rotating turntable 37 drives the first screen surface 3 to perform linear reciprocating motion. In this embodiment, the turntable 37 is arranged in a mounting seat 38. A reduction motor is installed in the mounting seat 38. The motor shaft of the reduction motor is fixedly connected to the axis of the turntable 37.

[0028] Since the first screen surface 3 will produce a flying action when passing the end of the guide rail 2, some of the sodium silicate raw materials that have not been completely screened will fall into the coarse material outlet 5. Therefore, in the early stage of screening of the sodium silicate raw materials, we make the first screen surface 3 only perform linear reciprocating motion in the straight part 21, and reciprocate along the guide rail 2 in the middle and late stages. To this end, we slide the mounting seat 38 on the second frame, and the second frame is also equipped with an electric cylinder 39. The piston rod of the electric cylinder 39 is fixedly connected to the mounting seat 38. In the early stage of screening, the piston rod of the electric cylinder 39 is extended, so that the maximum movement stroke of the first screen surface 3 is reduced, so that the first screen surface 3 can only perform linear reciprocating motion on the straight part 21. In the middle and late stages of screening, the piston rod of the electric cylinder 39 is reset, so that the first screen surface 3 can reciprocate along the guide rail 2. In this process, the raw materials with larger particle sizes remaining on the screen surface will fall and gather in the coarse material outlet 5.

[0029] In the description of this utility model, the terms "first," "second," "another," and "yet another" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of this utility model, "plurality" means two or more, unless otherwise specifically specified.

[0030] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. In addition, in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0031] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A screen device for screening raw materials for sodium silicate production, comprising a sealed box (1), wherein a first screen surface (3) is mounted in a horizontally sliding manner inside the sealed box (1), and characterized in that: Guide rails (2) are arranged on both the front and rear sides of the first screen surface (3). The first screen surface (3) is slidably assembled on the guide rails (2). The guide rails (2) include a horizontally arranged straight portion (21). A downwardly inclined descending portion (22) is installed at the end of the straight portion (21). A C-shaped ascending portion (23) is installed at the end of the descending portion (22). The end of the ascending portion (23) extends above the straight portion (21). The end of the ascending portion (23) is connected to the end of the straight portion (21) through a return portion (24). The first screen surface (3) reciprocates along the guide rails (2). During the reset process, the material is thrown up by the limiting guide of the descending portion (22), the ascending portion (23) and the return portion (24).

2. The screen device for screening raw materials for sodium silicate production according to claim 1, characterized in that: The first screen surface (3) includes a frame (31), a screen (32) is installed inside the frame (31), and sliders (33) are installed at the four corners of the frame (31), and the sliders (33) are slidably assembled in corresponding guide rails (2).

3. The screen device for screening raw materials for sodium silicate production according to claim 1, characterized in that: A baffle (241) is rotatably mounted on the end of the return portion (24), and a torsion spring is sleeved on the hinge shaft of the baffle (241); the torsion spring pushes the baffle (241) in a direction away from the straight portion (21).

4. The screen device for screening raw materials for sodium silicate production according to claim 1, characterized in that: The right end of the frame (31) is provided with a connecting plate (34), a connecting frame (35) is rotatably connected to the connecting plate (34), a connecting rod (36) is provided at the other end of the connecting frame (35), and a rotatable turntable (37) is also provided. The upper edge of the turntable (37) is fixedly connected to the connecting rod (36).

5. The screen device for screening raw materials for sodium silicate production according to claim 4, characterized in that: The turntable (37) is arranged in the mounting seat (38), and a reduction motor is installed in the mounting seat (38). The motor shaft of the reduction motor is fixedly connected to the axis of the turntable (37).

6. The screen device for screening raw materials for sodium silicate production according to claim 5, characterized in that: The mounting seat (38) is slidably mounted on the second frame. An electric cylinder (39) is also mounted on the second frame. The piston rod of the electric cylinder (39) is fixedly connected to the mounting seat (38).

7. The screen device for screening raw materials for sodium silicate production according to claim 1, characterized in that: The upper end of the sealed box (1) is provided with a feed port (4) located above the first screen surface (3), the side of the sealed box (1) is provided with a coarse material outlet (5), and the lower end surface of the sealed box (1) is provided with a fine material outlet (6).

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