Impact-resistant liner for a bin spout

Abstract

The application discloses a kind of impact-resistant lining plate for top of stock bin distribution beam, including several top plates, several top plates are connected by top plate bolt between, the both sides of top plate are respectively provided with several side plates, several side plates are connected by side plate bolt between, and top plate is clamped between two side plate bolts.The impact-resistant lining plate of the application, the connecting plate is arranged at the lower part of the top plate, and the top plate bolt is arranged on the connecting plate to avoid direct impact of the material on the top plate bolt;The use of prestressed metal ceramic composite lining plate ensures the normal use function of the distribution beam protection lining plate;The granular material layer is arranged in the groove, which can release part of the impact kinetic energy and play a certain buffering role;The top plate is clamped between the two side plate bolts, and the top plate bolt and the side plate bolt are both welded with threaded steel, so that the impact-resistant lining plate at the top of the distribution beam does not displace when impacted.

Description

Technical Field

[0001] This invention belongs to the technical field of material storage equipment and relates to an impact-resistant liner for the top of the material distribution beam in a silo. Background Technology

[0002] With the development of economy and technology, the number of discharge hoppers in large raw material silos in the coal and metallurgical industries is generally more than two. This necessitates the design of a distributor at the top of the discharge hopper to disperse the material falling from the top of the raw material silo into the discharge hopper. The top lining plate of the distributor beam is more likely to be impacted by large pieces of material.

[0003] Material enters the silo from the top of a 40-70 meter high silo. The high potential energy is converted into kinetic energy and impacts the silo wall at the drop point. Once the top liner of the distribution beam is damaged by the impact, the inclined surfaces on both sides of the distribution beam are also damaged, which leads to the accumulation of material between the discharge hoppers and the blockage phenomenon. Developing an impact-resistant liner for the top of the silo distribution beam to prevent the distribution beam from being impacted by the material above, which converts potential energy into kinetic energy, and to protect the distribution beam from damage and prevent the discharge hopper from blockage, is a technical problem that urgently needs to be solved in related fields. Summary of the Invention

[0004] The purpose of this invention is to provide an impact-resistant liner for the top of the material distribution beam in a silo, which solves the problems of liner being easily damaged by impact and connecting bolts being easily broken in the prior art.

[0005] The technical solution adopted in this invention is an impact-resistant liner for the top of the material distribution beam of a silo, comprising several top plates connected by top plate bolts, several side plates respectively provided on both sides of the top plates, and several side plates connected by side plate bolts, with the top plate being embedded between the bolts of the two side plates.

[0006] The invention is further characterized by:

[0007] The top plate has a square structure and nine grooves on its surface. A connecting plate is installed at each corner, and the grooves and connecting plates are located on two opposite planes of the top plate.

[0008] The top plate is cast using the "lost foam" method.

[0009] A layer of granular material is provided inside the groove.

[0010] The connecting plate is equipped with bolt connection holes.

[0011] Top plate bolts are installed inside the bolt connection holes.

[0012] Both the top plate bolts and the side plate bolts are made of threaded steel welded together.

[0013] The beneficial effects of this invention are:

[0014] (1) The present application is used for the top impact-resistant lining plate of the material bin distribution beam, the connecting plate is arranged at the lower part of the top plate, and the top plate bolt is arranged on the connecting plate to avoid direct impact of the material on the top plate bolt.

[0015] (2) The present application is used for the top impact-resistant lining plate of the material bin distribution beam, and the prestressed metal ceramic composite lining plate is adopted to ensure the normal use function of the distribution beam protection lining plate.

[0016] (3) The present application is used for the top impact-resistant lining plate of the material bin distribution beam, and the granular material layer is arranged in the groove to release part of the impact kinetic energy and play a certain buffering role.

[0017] (4) The present application is used for the top impact-resistant lining plate of the material bin distribution beam, and the top plate is formed in a concave arch shape, when a large block of material impacts on the top plate and forms an elastic collision, the reaction force of the top plate is upward, and since the arch shape is subjected to stress, the shear strength of the top plate bolt subjected to the rebound force is reduced, and the service life of the top plate bolt is prolonged.

[0018] (5) The present application is used for the top impact-resistant lining plate of the material bin distribution beam, and the top plate is clamped between the two side plate bolts, and the top plate bolt and the side plate bolt are both welded with threaded steel to ensure that the top impact-resistant lining plate of the distribution beam does not displace when impacted. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the top impact-resistant lining plate of the material bin distribution beam of the present application;

[0020] Figure 2 is a structural schematic view of the top plate in the top impact-resistant lining plate of the material bin distribution beam of the present application;

[0021] Figure 3 is a top view of the top plate in the top impact-resistant lining plate of the material bin distribution beam of the present application;

[0022] Figure 4 is a B-B sectional view of the top plate in the top impact-resistant lining plate of the material bin distribution beam of the present application;

[0023] Figure 5 is a C-C sectional view of the top plate in the top impact-resistant lining plate of the material bin distribution beam of the present application.

[0024] In the figure, 1. top plate, 2. side plate, 3. top plate bolt, 4. side plate bolt, 5. connecting plate, 6. groove, 7. high-strength micro-expansion microcrystalline ceramic grouting material. DETAILED DESCRIPTION

[0025] The present application will be described in detail below in combination with the drawings and specific embodiments.

[0026] Example 1

[0027] This invention is used for impact-resistant lining plates on the top of material distribution beams in silos, such as... Figure 1 As shown, the system includes several top plates 1, which are connected by top plate bolts 3. Several side plates 2 are provided on both sides of each top plate 1, and these side plates 2 are connected by side plate bolts 4. The top plates 1 are fitted between the side plate bolts 4. The top lining forms a concave arc surface connection. Micro-expansion high-strength microcrystalline ceramic grout is used under the concave arch lining. After the grout solidifies and expands, it generates prestress in the top lining, improving its impact resistance and the connection strength of the bolts. The top lining is cast from microcrystalline ceramic and high-chromium cast iron using prestressing technology. This not only improves the lining's impact resistance, wear resistance, and corrosion resistance, but also ensures good bonding strength between the microcrystalline ceramic and the high-strength microcrystalline ceramic grout. The metal area of ​​the bonding surface accounts for 23-25%, and the microcrystalline ceramic area accounts for 75-77%. The bonding strength between the microcrystalline ceramic and the microcrystalline ceramic grout is greater than 10 MPa, which is less than 1 MPa compared to the bonding strength between metal and concrete.

[0028] When the liner of this invention is installed, a concave arc surface can be formed at the top of the material distribution beam. When the material hits the beam liner, the liner is in an elastic collision. When it hits, the bottom of the beam liner bears the pressure resistance. When it rebounds, the beam liner forms a "concave arch" shape to bear the force, which avoids the top plate bolt 3 on the beam liner being subjected to shear force and protects the top plate bolt 3 in the liner from shear damage.

[0029] Example 2

[0030] This invention is used for impact-resistant lining plates on the top of material distribution beams in silos, such as... Figure 1 As shown, the system includes several top plates 1, which are connected by top plate bolts 3. Several side plates 2 are provided on both sides of each top plate 1, and these side plates 2 are connected by side plate bolts 4. The top plates 1 are fitted between the side plate bolts 4. The top lining forms a concave arc surface connection. Micro-expansion high-strength microcrystalline ceramic grout is used under the concave arch lining. After the grout solidifies and expands, it generates prestress in the top lining, improving its impact resistance and the connection strength of the bolts. The top lining is cast from microcrystalline ceramic and high-chromium cast iron using prestressing technology. This not only improves the lining's impact resistance, wear resistance, and corrosion resistance, but also ensures good bonding strength between the microcrystalline ceramic and the high-strength microcrystalline ceramic grout. The metal area of ​​the bonding surface accounts for 23-25%, and the microcrystalline ceramic area accounts for 75-77%. The bonding strength between the microcrystalline ceramic and the microcrystalline ceramic grout is greater than 10 MPa, which is less than 1 MPa compared to the bonding strength between metal and concrete.

[0031] When the liner of this invention is installed, a concave arc surface can be formed at the top of the material distribution beam. When the material hits the beam liner, the liner is in an elastic collision. When it hits, the bottom of the beam liner bears the pressure resistance. When it rebounds, the beam liner forms a "concave arch" shape to bear the force, which avoids the top plate bolt 3 on the beam liner being subjected to shear force and protects the top plate bolt 3 in the liner from shear damage.

[0032] This invention is used for impact-resistant lining plates on the top of material distribution beams in silos, such as... Figure 2 , Figure 3 As shown, the top plate 1 has a square structure with nine grooves 6 on its surface. A connecting plate 5 is located at each corner. The grooves 6 and the connecting plates 5 are located on two opposite planes of the top plate 1. The connecting plates 5 are located at the bottom of the top plate 1 to prevent materials from directly impacting the top plate bolts 3. The top plate 1 is cast using the "lost foam" method. A layer of granular material is provided in the grooves 6 to "retain" the material, which can release some of the impact kinetic energy and play a certain buffering role. This invention relates to an impact-resistant liner for the top of a material distribution beam in a silo. It employs a prestressed metal-ceramic composite liner. During installation, the top plate 1 forms a concave arch shape. When material impacts the top plate 1, it is considered an elastic collision. During the impact, the top of the beam below the liner is subjected to compressive force. After the collision, the top plate 1 experiences a rebound force. The impacted top plate 1 is subjected to an arch-shaped force. The elastic modulus of the prestressed metal-ceramic composite liner is not less than 200 GPa. Therefore, the force value of the liner's volumetric compressive modulus is equal to 1 to 2 times the force value of the rebound force, greatly reducing the shear force of the top plate bolts 3 and maintaining the tightness and stability of the top plate 1 connection.

[0033] Example 3

[0034] This invention is used for impact-resistant lining plates on the top of material distribution beams in silos, such as... Figure 1 As shown, the system includes several top plates 1, which are connected by top plate bolts 3. Several side plates 2 are provided on both sides of each top plate 1, and these side plates 2 are connected by side plate bolts 4. The top plates 1 are fitted between the side plate bolts 4. The top lining forms a concave arc surface connection. Micro-expansion high-strength microcrystalline ceramic grout is used under the concave arch lining. After the grout solidifies and expands, it generates prestress in the top lining, improving its impact resistance and the connection strength of the bolts. The top lining is cast from microcrystalline ceramic and high-chromium cast iron using prestressing technology. This not only improves the lining's impact resistance, wear resistance, and corrosion resistance, but also ensures good bonding strength between the microcrystalline ceramic and the high-strength microcrystalline ceramic grout. The metal area of ​​the bonding surface accounts for 23-25%, and the microcrystalline ceramic area accounts for 75-77%. The bonding strength between the microcrystalline ceramic and the microcrystalline ceramic grout is greater than 10 MPa, which is less than 1 MPa compared to the bonding strength between metal and concrete.

[0035] When the lining plate of the application is installed, a concave arc top of the distribution beam can be formed, when the material impacts the beam lining plate, the lining plate is in elastic collision, the bottom of the beam lining plate bears the compression force when impacting, and the beam lining plate forms a "concave arch" when rebounding, thereby avoiding the shear force on the top plate bolt 3 of the beam lining plate, and protecting the top plate bolt 3 in the lining plate from shear damage.

[0036] The application is used for a top impact-resistant lining plate of a distribution beam of a silo, as shown in Figure 2 、 Figure 3 The top plate 1 is in a square structure, and the surface is provided with nine grooves 6, and a connecting plate 5 is arranged at each corner, the grooves 6 and the connecting plate 5 are arranged on opposite planes of the top plate 1, and the connecting plate 5 is arranged at the lower part of the top plate 1 to avoid direct impact of the material on the top plate bolt 3; the top plate 1 is cast by "lost foam". The grooves 6 are provided with a layer of granular material that can be "retained", which can release part of the impact kinetic energy and play a certain buffering role. The application is used for a top impact-resistant lining plate of a distribution beam of a silo, and a prestressed metal ceramic composite lining plate is adopted, when installed, the top plate 1 forms a "concave arch", when the material impacts the top plate 1, it is regarded as elastic collision, the top part of the beam below the lining plate bears the compression force when impacting, and the top plate 1 bears the rebound force after the collision, the top plate 1 that is impacted is in arch stress, the elastic modulus of the prestressed metal ceramic composite lining plate is not less than 200 Gpa, so the force value of the volume compression modulus of the lining plate is 1-2 times of the rebound force, thereby greatly reducing the shear force of the top plate bolt 3, and maintaining the fastening and stability of the top plate 1.

[0037] High-strength micro-expansion microcrystalline ceramic grouting material 7 is grouted in the space surrounded by the top plate and the two side plates, and after curing and expansion, prestress is generated on the top "concave arch" lining plate, the fracture toughness of the top prestressed metal microcrystalline ceramic lining plate is increased, the relative displacement of the top lining plate when impacted is weakened, and the shear damage of the connecting bolt of the top lining plate is solved.

[0038] The application is used for a top impact-resistant lining plate of a distribution beam of a silo, as shown in Figure 4 、 Figure 5 A bolt connecting hole is arranged on the connecting plate 5. A top plate bolt 3 is arranged in the bolt connecting hole. The top plate bolt 3 and the side plate bolt 4 are both welded by threaded steel, so that the top impact-resistant lining plate of the distribution beam does not displace when impacted.

[0039] The application is used for a top impact-resistant lining plate of a distribution beam of a silo, and the working principle is as follows:

[0040] Work will be bolted 3 roof and beam reinforcement in the structure of the steel reinforced concrete with connecting steel welding firmly, along the structure of the upper reinforcement installation formed "concave arch", concave arch high not less than the length of the beam 0.5%; roof "buckle" in the beam both sides of the upper lip side plate 2, side plate 2 side plate bolt 4 and beam top connecting bolt between the use of connecting steel welding. Lining the connection gap with plywood sealing; finally check to determine that the grouting material is dense can be put into use. When the need for repair, first clean up the beam failure of concrete structures, etc. in the strength of not less than C 30 the concrete shell on the installation of self-locking anchor; then install the structure of the steel, connecting steel welding on the end of the self-locking anchor and structure of the steel; installation of two layers of structure of the steel, along the upper lip structure of the steel installation formed "concave arch", concave arch high not less than the length of the beam 0.5%; finally install the lining, lining connecting bolt and structure of the steel with connecting steel welding, beam top lining "buckle" in the beam both sides of the upper lip lining, beam both sides of the lining connecting bolt and beam top connecting bolt between the use of connecting steel welding. Lining the connection gap with plywood sealing; pouring early strength high strength microcrystalline ceramic grouting material, 24 hours can be put into use.

Claims

1. A top impact liner for a bin spout, characterized by, The utility model provides a kind of roof, including several top plates (1), several described top plates (1) are connected by top plate bolt (3) between, the both sides of described top plate (1) are provided with several side plates (2) respectively, several described side plates (2) are connected by side plate bolt (4) between, and top plate (1) is clamped between two side plate bolts (4); Described top plate (1) is square structure, and surface is provided with 9 recesses (6), each corner is provided with connecting plate (5), and recess (6) and connecting plate (5) are located on the opposite plane of top plate (1); Described top plate (1) uses "lost foam” casting; Described recess (6) is provided with granular material layer in; Described connecting plate (5) is provided with bolt connection hole; Described bolt connection hole is provided with top plate bolt (3); Described top plate bolt (3) and side plate bolt (4) are all welded with screw thread steel.

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