Porous ceramic membrane catalyst and preparation system thereof

Abstract

The invention discloses a porous ceramic membrane catalyst and a preparation system thereof, the porous ceramic membrane catalyst comprises a stirring and mixing box, a screen frame and a mixing frame are arranged in the stirring and mixing box, a liquid storage tank is fixedly connected in the mixing frame, a sealing hopper is arranged at the bottom of the mixing frame, and the bottom of the liquid storage tank is communicated with a liquid outlet pipe; when the eccentric wheel rotates, the screen frame vibrates, and the quantitative liquid outlet piece is driven to discharge liquid. According to the porous ceramic membrane catalyst and the preparation system thereof, through rotation of the eccentric wheel, vibration of the screen frame and liquid discharging of the quantitative liquid discharging piece are achieved, mixed powder is filtered, and a quantitative solution discharged by the quantitative liquid discharging piece is mixed with a quantitative powder; the mixed solution is fully and uniformly stirred through a stirring mixer, and the mixed powder and the solution are quantitatively mixed for multiple times, so that the mixing uniformity is ensured, the situation that the density of a subsequently formed ceramic membrane is inconsistent due to non-uniform mixing is avoided, and the hardness and the strength of the ceramic membrane are improved.

Description

Technical Field

[0001] The invention relates to the technical field of environmentally friendly catalytic materials, and in particular to a porous ceramic membrane catalyst and a preparation system thereof. Background Art

[0002] Ceramic membrane is a thin film made of ceramic material, which has high heat resistance, high chemical stability and good separation performance. Ceramic membrane is widely used in many fields, especially in catalysts, separation membranes and sensors. In terms of catalysts, ceramic membranes are often used in high-temperature catalytic reactions, such as methane reforming reaction, steam reforming reaction, etc.

[0003] For example, the Chinese patent with the authorization announcement number "CN109603849B" and the name "Porous ceramic membrane catalyst using waste rare earth-based denitration catalyst as raw material and its preparation method and application", the porous ceramic membrane catalyst prepared by this patent not only thoroughly and effectively solves the treatment and high value-added resource utilization of waste denitration catalyst, but also can effectively remove high-concentration methyl orange, p-nitrophenol and methylene blue and other water organic pollutants at high speed at normal temperature and pressure. The porous ceramic membrane catalyst component of the present invention is environmentally friendly, has a simple preparation system, low cost, high cost performance, and has strong application promotion value and broad market prospects.

[0004] In the preparation process of ceramic membrane catalysts, the raw materials need to be crushed and filtered, and then the filtered powder is mixed with the molding gold solution to form and then granulate. In the existing technology, the powder and the solution are directly mixed and stirred during the mixing process, which causes a part of the powder to easily agglomerate and the other part of the powder cannot contact the solution. The molding efficiency is low and it is easy to cause uneven mixing. When the mixing is uneven, it is easy to cause different densities at different positions of the product, and there will be differences in hardness and strength, resulting in substandard product production. Summary of the invention

[0005] The purpose of the present invention is to provide a porous ceramic membrane catalyst and a preparation system thereof to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solution: comprising a stirring and mixing box, wherein a screen frame and a mixing frame are arranged in the stirring and mixing box, a liquid storage tank is fixedly connected in the mixing frame, and a sealing bucket is arranged at the bottom of the mixing frame, and a liquid outlet pipe is connected to the bottom of the liquid storage tank; It also includes an eccentric wheel, when the eccentric wheel rotates, the screen frame vibrates and drives the quantitative liquid discharge part to discharge liquid, and the quantitative liquid discharge part includes a sliding pressure plate; The device also comprises a stirring and mixing part, which is driven to rotate and mix the powder with the solution when the sliding pressure plate moves downward.

[0007] As a further description of the above technical solution: The quantitative liquid discharge part includes a sliding sealing plate slidably arranged in the liquid storage tank, the sliding sealing plate is located below the sliding pressure plate, and a plurality of fixed plates are fixedly connected to the outside of the liquid storage tank, each of the fixed plates is slidably arranged with a fixed rod, and each of the fixed rods is fixedly connected to the sliding pressure plate.

[0008] As a further description of the above technical solution: The top end of each of the fixing rods is fixedly connected to the limiting plate, and each of the fixing rods is sleeved with a tension spring, and the two ends of the tension spring are respectively fixedly connected to the limiting plate and the fixing plate.

[0009] As a further description of the above technical solution: A one-way valve is arranged in the liquid storage tank, and the one-way valve is located between the sliding pressure plate and the sliding sealing plate. The flow direction of the one-way valve is from the liquid storage tank to the inside of the liquid storage tank.

[0010] As a further description of the above technical solution: The stirring and mixing element includes a stirring rod, and a transmission is arranged at the bottom of the liquid storage tank. One end of the transmission is fixedly connected to the stirring rod, and the other end of the transmission is fixedly connected to a sealing rod. The sealing rod extends into the liquid storage tank and passes through the sliding sealing plate. A plurality of stirring blades are fixedly connected to the outside of the stirring rod.

[0011] As a further description of the above technical solution: The stirring and mixing member also includes a spiral rod fixed to the bottom of the sliding pressure plate, the spiral rod extends into the sealing rod, the inner wall of the sealing rod is fixedly connected to a second ratchet disc, and the external thread of the spiral rod is connected to a first ratchet disc adapted to the second ratchet disc.

[0012] As a further description of the above technical solution: It also includes a rotating seal, which allows the sealing bucket to move up to seal the mixing frame when the stirring rod rotates. The rotating seal includes a sliding rod fixed on the sealing bucket, the sliding rod extends into the stirring rod and is fixedly connected to a guide block, and a spiral groove compatible with the guide block is opened in the stirring rod.

[0013] As a further description of the above technical solution: It also includes a vibrating liquid outlet component, which is used to drive the eccentric wheel to rotate. The vibrating liquid outlet component includes a rotating rod fixed in the stirring and mixing box, the eccentric wheel is fixed to the outside of the rotating rod, the end of the rotating rod extends to the outside of the stirring and mixing box and is fixedly connected to a worm gear, the outside of the stirring and mixing box is fixedly connected to a motor through a mounting bracket, and the output end of the motor is fixedly connected to the worm gear.

[0014] As a further description of the above technical solution: Special-shaped rods are fixedly connected to both sides of the screen frame, and the two special-shaped rods extend outside the stirring and mixing box. A rack is fixedly connected to the outside of the special-shaped rod close to the motor.

[0015] As a further description of the above technical solution: A guide plate is fixedly connected to the outside of the stirring and mixing box, a driving rod is rotatably connected to the inside of the guide plate, a worm wheel and a sector gear are fixedly connected to both ends of the driving rod respectively, the worm wheel is meshed with the worm, and the sector gear is meshed with the gear.

[0016] In the above technical solution, the porous ceramic membrane catalyst and the preparation system thereof provided by the present invention have the following beneficial effects: The present invention realizes the vibration of the screen frame and the discharge of the quantitative liquid outlet part through the rotation of the eccentric wheel, thereby realizing the filtration of the mixed powder, and the quantitative liquid outlet part discharges a quantitative solution and mixes a quantitative powder, and the mixed solution is fully and evenly stirred by a stirring mixer, and the mixed powder and the solution are quantitatively mixed for multiple times, thereby ensuring the uniformity of the mixing, avoiding the inconsistent density of the subsequently formed ceramic membrane due to uneven mixing, reducing the defects of the ceramic membrane, and increasing the hardness and strength of the ceramic membrane.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of a three-dimensional structure provided by an embodiment of the present invention; Figure 2A schematic diagram of the internal structure provided by an embodiment of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of a mixing frame provided in an embodiment of the present invention; Figure 4 A schematic diagram of the three-dimensional structure of a liquid storage tank and a stirring and mixing member provided in an embodiment of the present invention; Figure 5 A schematic diagram of the internal longitudinal section structure of a liquid storage tank provided in an embodiment of the present invention; Figure 6 A schematic diagram of a partial three-dimensional longitudinal section structure of a stirring rod and a sliding rod provided in an embodiment of the present invention; Figure 7 The embodiment of the present invention provides Figure 1 An enlarged view of point A is shown; Figure 8 The embodiment of the present invention provides Figure 5 An enlarged view of point B is shown.

[0020] Description of reference numerals: 1. Stirring and mixing box; 2. Screen frame; 21. Special-shaped rod; 22. Return spring; 3. Mixing frame; 31. Sealing bucket; 4. Liquid storage tank; 41. Liquid outlet pipe; 5. Eccentric wheel; 6. Quantitative liquid outlet part; 61. Sliding pressure plate; 62. Sliding sealing plate; 63. One-way valve; 64. Fixed plate; 65. Fixed rod; 66. Limit plate; 67. Tension spring; 7. Stirring and mixing part; 71. Stirring rod; 72. Stirring blade; 73. Screw rod; 74. First ratchet disk; 75. Second ratchet disk; 76. Sealing rod; 8. Rotating sealing part; 81. Sliding rod; 82. Guide block; 83. Spiral groove; 84. Transmission; 9. Vibrating liquid outlet part; 91. Rotating rod; 92. Rack; 93. Worm; 94. Motor; 95. Guide plate; 96. Drive rod; 97. Worm wheel; 98. Fan gear. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0022] See also Figure 1-8A porous ceramic membrane catalyst preparation system provided in this embodiment includes a stirring and mixing box 1, wherein a screen frame 2 and a mixing frame 3 are arranged in the stirring and mixing box 1, wherein a liquid storage tank 4 is fixedly connected in the mixing frame 3, and a sealing bucket 31 is arranged at the bottom of the mixing frame 3, wherein a liquid outlet pipe 41 is connected to the bottom of the liquid storage tank 4, wherein a sealing rubber is fixedly connected in the liquid outlet pipe 41, and an opening is arranged on the sealing rubber, wherein under normal conditions, the sealing rubbers squeeze each other to ensure that the solution does not overflow, and when the sealing rubber is subjected to pressure, the opening of the sealing rubber is squeezed open to discharge the solution; and an eccentric wheel 5 is also included, wherein when the eccentric wheel 5 rotates, the screen frame 2 is vibrated and the quantitative liquid outlet part 6 is driven to discharge the liquid The quantitative liquid outlet part 6 includes a sliding pressure plate 61; and also includes a stirring and mixing part 7. When the sliding pressure plate 61 moves downward, the stirring and mixing part 7 is driven to rotate to mix the powder and the solution. The rotation of the eccentric wheel 5 realizes the vibration of the screen frame 2 and the discharge of the quantitative liquid outlet part 6, so as to realize the filtration of the mixed powder, and the quantitative liquid outlet part 6 discharges a quantitative solution and mixes a quantitative powder. The mixed solution is fully and evenly stirred by the stirring mixer, and the mixed powder and the solution are quantitatively mixed for multiple times to ensure the uniformity of the mixing, avoid the inconsistent density of the subsequently formed ceramic membrane due to uneven mixing, reduce the defects of the ceramic membrane, and increase the hardness and strength of the ceramic membrane.

[0023] In an embodiment further provided by the present invention, the quantitative liquid outlet part 6 includes a sliding sealing plate 62 slidably arranged in the liquid storage tank 4, the sliding sealing plate 62 is located below the sliding pressure plate 61, and the liquid outlet pipe 41 is fixedly connected to the outside with multiple fixed plates 64, and each of the fixed plates 64 is slidably arranged with a fixed rod 65, and each of the fixed rods 65 is fixedly connected to the sliding pressure plate 61.

[0024] Furthermore, the top end of each of the fixed rods 65 is fixedly connected to a limiting plate 66, and each of the fixed rods 65 is sleeved with a tension spring 67, and the two ends of the tension spring 67 are respectively fixedly connected to the limiting plate 66 and the fixed plate 64. Since the downward movement distance of the sliding pressure plate 61 remains unchanged after each rotation of the eccentric wheel 5, the moving distance of the pressed sliding sealing plate 62 remains unchanged, thereby achieving quantitative extrusion of the solution in the liquid storage tank 4.

[0025] Furthermore, a one-way valve 63 is provided in the liquid storage tank 4, and the one-way valve 63 is located between the sliding pressure plate 61 and the sliding sealing plate 62. The flow direction of the one-way valve 63 is from the liquid storage tank 4 to the liquid storage tank 4. When the sliding pressure plate 61 moves downward, since the sliding pressure plate 61 and the sliding sealing plate 62 are a sealing structure, the downward movement of the sliding pressure plate 61 drives the sliding sealing plate 62 to move downward synchronously, so as to realize the quantitative extrusion of the solution in the liquid storage tank 4. When the tension spring 67 pulls the sliding pressure plate 61 to move upward, the one-way valve 63 replenishes the outside air into the liquid storage tank 4, thereby ensuring that the sliding sealing plate 62 does not move upward.

[0026] In an embodiment further provided by the present invention, the stirring and mixing element 7 includes a stirring rod 71, and a transmission 84 is provided at the bottom of the liquid storage tank 4, one end of the transmission 84 is fixedly connected to the stirring rod 71, and the other end of the transmission 84 is fixedly connected to a sealing rod 76, and the sealing rod 76 is dynamically sealed with the sliding sealing plate 62 and the liquid storage tank. The sealing rod 76 extends into the liquid storage tank and passes through the sliding sealing plate 62. A plurality of stirring blades 72 are fixedly connected to the outside of the stirring rod 71, and the rotation speed of the stirring rod 71 is increased by the transmission 84, thereby improving the mixing efficiency.

[0027] The second stopper 75 is engaged with the first stopper 76 and the second stopper 77 is engaged with the first stopper 78. The second stopper 75 is engaged with the first stopper 78 and the second stopper 77 is engaged with the second stopper 78.

[0028] In the embodiment provided by the present invention, a rotating seal 8 is also included. When the stirring rod 71 rotates, the sealing bucket 31 moves up to seal the mixing frame 3. The rotating seal 8 includes a sliding rod 81 fixed on the sealing bucket 31. The sliding rod 81 extends into the stirring rod 71 and is fixedly connected to a guide block 82. A spiral groove 83 adapted to the guide block 82 is provided in the stirring rod 71. After the stirring rod 71 rotates, the spiral groove 83 rotates synchronously, so that the guide block 82 moves up in the spiral groove 83, driving the sealing bucket 31 to move up to seal the discharge port of the mixing frame 3. The powder filtered by the sieve frame 2 enters the mixing frame 3, slides down through the inner wall of the mixing frame 3 to the bottom, and the sealing bucket 31 moves up to ensure that the powder will not be discharged from the sieve frame 2.

[0029] The solution further provided by the present invention also includes a vibrating liquid outlet component 9, which is used to drive the eccentric wheel 5 to rotate. The vibrating liquid outlet component 9 includes a rotating rod 91 fixed in the stirring and mixing box 1, and the eccentric wheel 5 is fixed to the rotating rod 91 outward. The end of the rotating rod 91 extends to the outside of the stirring and mixing box 1 and is fixedly connected to a worm 93. The outside of the stirring and mixing box 1 is fixedly connected to a motor 94 through a mounting bracket, and the output end of the motor 94 is fixedly connected to the worm 93.

[0030] In the present invention, both sides of the screen frame 2 are fixedly connected with special-shaped rods 21, and the two special-shaped rods 21 extend outside the mixing box 1. The special-shaped rod 21 near the motor 94 is fixedly connected with a rack 92.

[0031] In the present invention, a guide plate 95 is fixedly connected to the outside of the stirring and mixing box 1, and a driving rod 96 is rotatably connected to the inside of the guide plate 95. The two ends of the driving rod 96 are respectively fixedly connected to a worm gear 97 and a sector gear 98. The worm gear 97 is meshed with the worm 93, and the sector gear 98 is meshed with the gear.

[0032] When in use, the motor 94 is started to drive the rotating rod 91 to rotate, so that the eccentric wheel 5 rotates synchronously. When the distal end of the eccentric wheel 5 rotates to the top, the screen frame 2 is driven to move upward. When the distal end of the eccentric wheel 5 rotates to the bottom, the screen frame 2 moves downward. During the rotation of the eccentric wheel 5, the screen frame 2 is driven to reciprocate. When the motor 94 is working, it drives the worm 93 to rotate, so that the worm wheel 97 rotates synchronously, and the sector gear 98 is driven to rotate synchronously through the driving rod 96, thereby driving the rack 92 to move, and the rack 92 drives the special-shaped rod 21 to move, so that the screen frame 2 moves. When the sector gear 98 moves out of the rack 92, the elastic release of the reset spring 22 drives the screen to move and reset, and the screen moves back and forth horizontally and vertically to achieve filtering of the mixed quantitative powder; When the far end of the eccentric wheel 5 rotates to the bottom, the eccentric wheel 5 pushes the sliding pressure plate 61 to move downward, so that the pressure in the liquid storage tank 4 increases, thereby pushing the sliding sealing plate 62 to move downward, so that the liquid in the liquid storage tank 4 is discharged through the liquid outlet pipe 41 into the mixing frame 3 to contact with the powder; When the sealing plate moves downward, the spiral rod 73 is driven to move synchronously, so that the first ratchet disk 74 and the second ratchet disk 75 abut against each other, and the spiral rod 73 moves downward to drive the first ratchet disk 74 to rotate, so that the second ratchet disk 75 rotates synchronously, driving the stirring rod 71 to rotate synchronously. When the stirring rod 71 rotates, the spiral groove 83 rotates synchronously, so that the guide block 82 drives the sealing bucket 31 to move upward to seal the mixing frame 3, and the speed of the stirring rod 71 is increased by the transmission 84. The filtered powder enters the mixing frame 3 and falls to the bottom of the mixing frame 3. At this time, the sealing bucket 31 seals the mixing frame 3 and drives the stirring blade 72 to fully mix the powder and the solution. After the mixing is completed, the eccentric wheel 5 rotates and moves out of the sliding pressure plate 61, and the elastic release of the tension spring 67 pulls the sliding pressure plate 61 upward, thereby driving the spiral rod 73 to move upward, so that the sealing rod 76 stops rotating, thereby stopping the stirring rod 71 from rotating, and through the gravity of the sealing bucket 31, the guide block 82 moves downward in the spiral groove 83, thereby opening the sealing bucket 31 and discharging the mixed raw materials, and repeating the above operation.

[0033] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A porous ceramic membrane catalyst preparation system, comprising a stirring mixing box (1), characterized in that: The stirring and mixing box (1) is provided with a screen frame (2) and a mixing frame (3), the mixing frame (3) is fixedly connected with a liquid storage tank (4), and a sealing bucket (31) is provided at the bottom of the mixing frame (3), and the bottom of the liquid storage tank (4) is connected with a liquid outlet pipe (41); It also includes an eccentric wheel (5), which, when the eccentric wheel (5) rotates, causes the screen frame (2) to vibrate and drives the quantitative liquid discharge member (6) to discharge liquid, wherein the quantitative liquid discharge member (6) includes a sliding pressure plate (61); It also includes a stirring and mixing member (7), which is driven to rotate and mix the powder and the solution when the sliding pressure plate (61) moves downward.

2. A porous ceramic membrane catalyst preparation system according to claim 1, characterized in that: The quantitative liquid discharge member (6) comprises a sliding sealing plate (62) slidably arranged in the liquid storage tank (4), the sliding sealing plate (62) being located below the sliding pressure plate (61), a plurality of fixed plates (64) being fixedly connected to the outside of the liquid storage tank (4), a fixed rod (65) being slidably arranged in each of the fixed plates (64), and each of the fixed rods (65) being fixedly connected to the sliding pressure plate (61).

3. A porous ceramic membrane catalyst preparation system according to claim 2, characterized in that: The top end of each of the fixing rods (65) is fixedly connected to a limiting plate (66), and each of the fixing rods (65) is sleeved with a tension spring (67), with two ends of the tension spring (67) respectively fixedly connected to the limiting plate (66) and the fixing plate (64).

4. A porous ceramic membrane catalyst preparation system according to claim 3, characterized in that: A one-way valve (63) is provided in the liquid storage tank (4). The one-way valve (63) is located between the sliding pressure plate (61) and the sliding sealing plate (62). The flow direction of the one-way valve (63) is from the liquid storage tank (4) to the inside of the liquid storage tank (4).

5. A porous ceramic membrane catalyst preparation system according to claim 4, characterized in that: The stirring and mixing element (7) comprises a stirring rod (71); a transmission (84) is provided at the bottom of the liquid storage tank (4); one end of the transmission (84) is fixedly connected to the stirring rod (71); and the other end of the transmission (84) is fixedly connected to a sealing rod (76); the sealing rod (76) extends into the liquid storage tank and passes through the sliding sealing plate (62); and a plurality of stirring blades (72) are fixedly connected to the outside of the stirring rod (71).

6. A porous ceramic membrane catalyst preparation system according to claim 5, characterized in that: The stirring and mixing member (7) further comprises a spiral rod (73) fixed to the bottom of the sliding pressure plate (61), the spiral rod (73) extending into the sealing rod (76), the inner wall of the sealing rod (76) being fixedly connected to a second ratchet disc (75), and the outer thread of the spiral rod (73) being connected to a first ratchet disc (74) adapted to the second ratchet disc (75).

7. A porous ceramic membrane catalyst preparation system according to claim 1, characterized in that: The invention also comprises a rotating seal (8) which, when the stirring rod (71) rotates, causes the sealing bucket (31) to move upward to seal the mixing frame (3). The rotating seal (8) comprises a sliding rod (81) fixed to the sealing bucket (31). The sliding rod (81) extends into the stirring rod (71) and is fixedly connected to a guide block (82). A spiral groove (83) matching the guide block (82) is formed in the stirring rod (71).

8. A porous ceramic membrane catalyst preparation system according to claim 1, characterized in that: The invention also comprises a vibrating liquid outlet component (9), wherein the vibrating liquid outlet component (9) is used to drive the eccentric wheel (5) to rotate, and the vibrating liquid outlet component (9) comprises a rotating rod (91) fixed in the stirring and mixing box (1), and the eccentric wheel (5) is fixed outwardly to the rotating rod (91), and the end of the rotating rod (91) extends to the outside of the stirring and mixing box (1) and is fixedly connected to a worm gear (93). The outside of the stirring and mixing box (1) is fixedly connected to a motor (94) via a mounting bracket, and the output end of the motor (94) is fixedly connected to the worm gear (93).

9. A porous ceramic membrane catalyst preparation system according to claim 8, characterized in that: Special-shaped rods (21) are fixedly connected to both sides of the screen frame (2), and both special-shaped rods (21) extend outside the stirring and mixing box (1). A rack (92) is fixedly connected to the outside of the special-shaped rod (21) on the side close to the motor (94).

10. A porous ceramic membrane catalyst preparation system according to claim 9, characterized in that: The stirring and mixing box (1) is fixedly connected to a guide plate (95) on the outside, and a driving rod (96) is rotatably connected to the inside of the guide plate (95). Two ends of the driving rod (96) are respectively fixedly connected to a worm wheel (97) and a sector gear (98). The worm wheel (97) is in transmission meshing engagement with the worm (93), and the sector gear (98) is in mutual meshing engagement with the gear.

Images