Structure for prolonging service life of pneumatic chute

Abstract

The utility model discloses a structure for prolonging the service life of a pneumatic chute, which is characterized in that a material receiving point ventilation plate is fixed at a material receiving point in a material chamber, a ventilation plate protection device is arranged above the material receiving point ventilation plate, and the ventilation plate protection device comprises a first steel plate and a second steel plate which are hinged through a stainless steel hinge; rubber pads are arranged below the first steel plate, the second steel plate and the stainless steel hinge; vent holes are formed in the surfaces of the first steel plate and the second steel plate; a pneumatic chute cover plate is provided with a through hole, a normal-pressure quick-opening hand hole is welded and mounted on the pneumatic chute cover plate, a sealing gasket is arranged at the normal-pressure quick-opening hand hole, a vent hole is arranged to increase material fluidity and prevent material blockage, and the normal-pressure quick-opening hand hole is used for mounting a pneumatic chute ventilation plate protection device, optimizing lining protection and observing the internal condition of the pneumatic chute. And meanwhile, by additionally arranging the protective device for the ventilation plate of the pneumatic chute, protection of the ventilation plate at the material receiving point of the pneumatic chute is optimized and upgraded, and the risk that the ventilation plate is damaged due to scouring is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic chute material transportation, and more specifically to a structure for extending the service life of a pneumatic chute. Background Art

[0002] At present, in the aluminum electrolysis production process, pneumatic chutes are usually used as equipment for conveying powdered alumina materials, and are widely used in electrolytic cell feeding and electrolytic fume purification processes. The pneumatic chute includes an upper material chamber and a lower air chamber, which are separated by a layer of nylon permeable plate. High-pressure air enters the lower tank body from the air inlet through a hose, diffuses to the upper tank body through the permeable layer, and after the conveyed powder enters the upper tank from the feed port, it is filled with the airflow with a high flow rate on the permeable plate, filling the gaps between the powder particles and fluidizing. The fluidized powder material flows from high to low.

[0003] Problems with the existing technology: Due to defects in the design of the pneumatic chute, the alumina powder discharge pipe is at a 90-degree right angle to the pneumatic chute below, and the falling material directly impacts the air permeable plate, and the material has a high temperature, so the air permeable plate at the receiving point of the pneumatic chute and both sides of the trough body are easily damaged. After the air permeable plate is damaged, the material is fed into the air chamber, and the material cannot flow in the pneumatic chute, or there is material leakage on both sides of the trough body at the receiving point of the pneumatic chute, resulting in interruption of the transportation process, which has a serious impact on the feeding of the electrolytic cell and the feeding of the dust collector of the purification system of the electrolytic aluminum enterprise. At present, there is a lack of clear and effective protection measures for the air permeable plate and both sides of the trough body at the receiving point of the pneumatic chute. When the air permeable plate and both sides of the trough body are damaged, it is necessary to stop feeding, spend a lot of manpower and time to replace the pneumatic chute or repair the pneumatic chute body and replace the air permeable plate to resume material transportation. Utility Model Content

[0004] In view of the above defects or improvement needs of the prior art, the utility model provides a structure for extending the service life of a pneumatic chute. When the alumina powder falls vertically along the discharge pipe, it does not directly contact the air permeable plate, but impacts the center of the air permeable plate protective device of the pneumatic chute to form a buffer layer of alumina material. After being buffered, the material further contacts the air permeable plate, thereby extending the service life of the pneumatic chute.

[0005] In order to achieve the above-mentioned purpose, according to the utility model, a structure for extending the service life of a pneumatic chute is provided, wherein a receiving point air plate is fixed at the receiving point in the material chamber, and the air plate protection device is installed above the receiving point air plate, and the air plate protection device comprises a first steel plate and a second steel plate hinged by a stainless steel hinge, and a rubber pad is provided under the first steel plate, the second steel plate and the stainless steel hinge, and air holes are provided on the surfaces of the first steel plate and the second steel plate; a through opening is opened on the pneumatic chute cover plate, and a normal pressure quick-opening hand hole is welded and installed thereon, and a sealing gasket is provided at the normal pressure quick-opening hand hole, and the air hole is provided to increase the fluidity of the material and prevent material blockage, and the normal pressure quick-opening hand hole is used for installing the air plate protection device of the pneumatic chute, optimizing the lining protection and observing the internal situation of the pneumatic chute, so as to prevent the pneumatic chute from being completely closed and unable to be observed and maintained. At the same time, by adding the air plate protection device of the pneumatic chute, the protection of the air plate of the receiving point of the pneumatic chute is optimized and upgraded, and the risk of the air plate being damaged due to scouring is eliminated.

[0006] Furthermore, the sealing gasket includes, from bottom to top, a lower cover plate, a wool pad and an upper cover plate.

[0007] Furthermore, the normal pressure quick-opening hand hole includes an eccentric wheel, a pressure rod, a first pressure cover ear, a second pressure cover ear and a rod handle. The first pressure cover ear and the second pressure cover ear are provided with coaxial holes, and both are fixedly mounted on the pneumatic chute cover plate. The pressure rod passes through the holes and is rotatably connected to the first pressure cover ear and the second pressure cover ear respectively. The eccentric wheel is fixed on the pressure rod and rotates synchronously. The rod handle is fixed on the pressure rod, and the eccentric wheel is tightly attached to the upper cover plate.

[0008] Furthermore, the first steel plate and the second steel plate are carbon steel plates.

[0009] Furthermore, protective steel plates are welded on the side walls of the material chamber on both sides of the air-permeable plate protection device to protect the side walls and eliminate the risk of breakdown and shutdown due to wear through by high-speed alumina powder.

[0010] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0011] (1) The utility model provides a structure for extending the service life of a pneumatic chute. When alumina powder falls vertically along a discharge pipe, it does not directly contact the air permeable plate, but impacts the center of the air permeable plate protective device of the pneumatic chute to form a buffer layer of alumina material. After the material is buffered, it further contacts the air permeable plate. The air holes can increase the fluidity of the material and prevent blockage. This method can better extend the service life of the pneumatic chute, so that the pneumatic chute has the conditions to extend its service life by more than twice.

[0012] (2) The utility model provides a structure for extending the service life of a pneumatic chute by optimizing and modifying the original structure. By modifying the pneumatic chute cover plate structure, a normal pressure quick-opening hand hole is welded and installed, which is used for installing a pneumatic chute air plate protection device, optimizing the lining protection, and observing the internal conditions of the pneumatic chute, thereby eliminating the problem that the pneumatic chute receiving point is completely closed and cannot be observed and maintained. At the same time, by adding a pneumatic chute air plate protection device, the air plate protection of the pneumatic chute receiving point is optimized and upgraded, eliminating the risk of damage to the air plate due to erosion.

[0013] (3) The utility model provides a structure for extending the service life of a pneumatic chute. By welding protective steel plates to the left and right side walls of the material chamber of the pneumatic chute, the side walls are protected and the risk of breakdown and shutdown caused by high-speed alumina powder being worn through is eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the pneumatic chute structure;

[0015] Figure 2 It is a structural schematic diagram of embodiment 1;

[0016] Figure 3 This is a structural schematic diagram of the normal pressure quick opening hand hole in Example 1;

[0017] Figure 4 is a top view of the air-permeable plate protection device in Example 1;

[0018] Figure 5 It is a side view of the air permeable plate protection device in Example 1;

[0019] Figure 6 This is a record of the damage of the material receiving points at different parts of a pneumatic chute after the installation of Example 1.

[0020] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-pneumatic chute cover; 2-material chamber; 3-air permeable plate at the material receiving point; 4-normal pressure quick-opening hand hole; 5-air permeable plate protection device; 6-protective steel plate; 7-lower cover; 8-wool pad; 9-upper cover; 10-eccentric wheel; 11-pressure rod; 12-first pressure cover ear; 13-second pressure cover ear; 14-rod handle; 15-first steel plate; 16-second steel plate; 17-hinge; 18-vent; 19-rubber pad. DETAILED DESCRIPTION

[0021] Example 1

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] like Figure 1 As shown, the pneumatic chute includes a material chamber 2 and a pneumatic chute cover plate 1 covering and fixed on the material chamber 2. The alumina powder is connected to the material chamber 2 along the down pipe, and the material falls vertically to the receiving point on the material chamber 2. The receiving point air permeable plate 3 is fixed at the receiving point in the material chamber 2. Figure 1-Figure 4 As shown, a breathable plate protection device 5 is installed above the breathable plate 3 at the material receiving point in the material chamber 2, and the falling material impacts the middle of the breathable plate protection device 5.

[0024] Furthermore, if Figure 1-Figure 5 As shown, the breathable plate protection device 5 includes a first steel plate 15, a second steel plate 16, a stainless steel hinge 17, a vent 18 and a rubber pad 19, wherein the first steel plate 15 and the second steel plate 16 are carbon steel plates of the same size and 7 mm thick, and the first steel plate 15 and the second steel plate 16 are hinged by welding one or more stainless steel hinges 17, and a rubber pad 19 is provided under the first steel plate 15, the second steel plate 16 and the stainless steel hinge 17, and the first steel plate 15 and the second steel plate 16 are provided with vents 18 on their surfaces, preferably, the vents 18 are symmetrically arranged at the corners of the first steel plate 15 and the second steel plate 16, the diameter of the vents 18 is 1 cm, and a total of 24 vents are arranged, and the breathable plate protection device 5 is welded above the breathable plate 3 at the receiving point inside the material chamber 2 to optimize the falling impact mode of the material.

[0025] Furthermore, the inner lining of the air-permeable plate protection device 5 is optimized for protection, and protective steel plates 6 are welded on the side walls of the material chamber 2 on both sides of the air-permeable plate protection device 5. Preferably, the thickness of the protective steel plates 6 is 3 mm, which is used to protect the side walls of the material chamber 2 at the material receiving point.

[0026] Furthermore, if Figure 1-Figure 3As shown, a through hole is opened on the pneumatic chute cover plate 1, and a normal pressure quick opening hand hole 4 is welded and installed thereon. The normal pressure quick opening hand hole 4 is a rectangular parallelepiped structure, which is used to install the protective device of the air permeable plate 3 at the receiving point, optimize the use of the channel of the lining protection, and observe the use of the air permeable plate 3 at the receiving point inside the pneumatic chute through the normal pressure quick opening hand hole 4. Further, a sealing gasket is set at the normal pressure quick opening hand hole 4, and the sealing gasket includes a lower cover plate 7, a wool pad 8 and an upper cover plate 9 laid from bottom to top to prevent material leakage, wherein the wool pad 8 can be set in double layers. Furthermore, the normal pressure quick opening hand hole 4 also includes an eccentric wheel 10, a pressure rod 11, a first pressure cover ear 12, a second pressure cover ear 13 and a rod handle 14, wherein the first pressure cover ear 12 and the second pressure cover ear 13 are provided with coaxial holes, and both are fixedly installed on the pneumatic chute cover plate 1, and the pressure rod 11 passes through the holes and is rotatably connected with the first pressure cover ear 12 and the second pressure cover ear 13 respectively, and the pressure rod 11 is a T-shaped hollow steel pipe structure, on which a rod handle 14 is fixed for easy hand-held operation. Further, the eccentric wheel 10 is welded to the pressure rod 11, and the eccentric wheel 10 can rotate together under the force of the rod handle 14, and the sealing gasket is pressed by the rim of the eccentric wheel 10. Specifically, the eccentric wheel 10 is in contact and pressed with the upper cover plate 9 to achieve sealing of the through port.

[0027] like Figure 6 As shown, after a pneumatic chute is optimized using the above embodiment, the damage conditions of different parts of the pneumatic chute are significantly improved, thereby extending the service life.

[0028] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A structure for extending the service life of a pneumatic chute, arranged on a material chamber (2) and a pneumatic chute cover plate (1), wherein the pneumatic chute cover plate (1) is fixed on the material chamber (2), characterized in that: A receiving point air permeable plate (3) is fixed at the receiving point in the material chamber (2); an air permeable plate protection device (5) is installed above the receiving point air permeable plate (3); the air permeable plate protection device (5) comprises a first steel plate (15) and a second steel plate (16) hingedly connected by a stainless steel hinge (17); a rubber pad (19) is provided below the first steel plate (15), the second steel plate (16) and the stainless steel hinge (17); and air vents (18) are provided on the surfaces of the first steel plate (15) and the second steel plate (16); a through opening is opened on the pneumatic chute cover plate (1), and a normal pressure quick opening hand hole (4) is welded and installed thereon; a sealing pad is provided at the normal pressure quick opening hand hole (4).

2. A structure for extending the life of a pneumatic chute according to claim 1, characterized in that: The sealing gasket comprises, from bottom to top, a lower cover plate (7), a wool pad (8) and an upper cover plate (9) which are laid in sequence.

3. A structure for extending the life of a pneumatic chute according to claim 2, characterized in that: The normal pressure quick-opening hand hole (4) comprises an eccentric wheel (10), a pressure rod (11), a first pressure cover ear (12), a second pressure cover ear (13) and a rod handle (14); the first pressure cover ear (12) and the second pressure cover ear (13) are provided with coaxial holes, and both are fixedly mounted on the pneumatic chute cover plate (1); the pressure rod (11) passes through the holes and is rotatably connected to the first pressure cover ear (12) and the second pressure cover ear (13), respectively; the eccentric wheel (10) is fixed on the pressure rod (11) and rotates synchronously; the rod handle (14) is fixed on the pressure rod (11); and the eccentric wheel (10) is in close contact with the upper cover plate (9).

4. A structure for extending the life of a pneumatic chute according to claim 1, characterized in that: The first steel plate (15) and the second steel plate (16) are carbon steel plates.

5. A structure for extending the life of a pneumatic chute according to any one of claims 1 to 4, characterized in that: Protective steel plates (6) are welded to the side walls of the material chamber (2) on both sides of the air permeable plate protective device (5).

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