Quicklime activity sample granularity screening device

Abstract

The invention provides a quick lime activity sample granularity screening device, and relates to the technical field of quick lime screening, the quick lime activity sample granularity screening device comprises a support and a screening structure, the upper end of the support is fixedly connected with a top plate, a hopper is installed in the top plate, the screening structure is arranged at the lower end of the hopper, and the screening structure comprises a frame; the frame is installed on the hopper, a connecting plate is installed in the support, a bottom frame is fixedly connected to the upper surface of the connecting plate, an auxiliary plate is arranged on the lower surface of the frame, a plurality of bolts are arranged in the auxiliary plate, and the auxiliary plate and the connecting plate are connected through the bolts; a plurality of sieve trays are arranged between the auxiliary plate and the bottom frame, the upper surfaces of the sieve trays are fixedly connected with connecting rings, and the connecting rings are matched with the sieve trays above. The quick lime screening device has the effects that quick lime can be conveniently screened, and the screening disc can be conveniently and rapidly replaced.

Description

Technical Field

[0001] This invention relates to the field of quicklime sieving technology, and in particular to a quicklime activity sample particle size sieving device. Background Technology

[0002] Currently, power plants, steel mills, and other enterprises widely use dry desulfurization processes with quicklime as the absorbent to treat flue gas and reduce its sulfur content in order to meet emission standards. The activity of quicklime, as the absorbent, directly affects the flue gas desulfurization efficiency and is a crucial indicator of its quality. Therefore, activity testing of quicklime is essential to select highly active quicklime as the absorbent.

[0003] Quicklime screening equipment is commonly used to screen and classify quicklime to ensure that its particle size meets requirements for use in various industrial applications. The main purpose of the screening process is to separate quicklime according to particle size, which helps to improve its reaction efficiency and performance.

[0004] The above findings reveal the following shortcomings: existing quicklime sample particle size sieving devices often suffer from low sieving efficiency and unsatisfactory sieving results during actual operation. Particularly for materials like quicklime, which have a certain degree of stickiness and are easily hygroscopic, traditional sieving devices are prone to material clogging of the sieve holes and incomplete sieving, leading to mixing of quicklime samples of different particle sizes. This affects the accuracy of subsequent activity test results, and the sieve discs are difficult to replace. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a quicklime activity sample particle size sieving device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a quicklime activity sample particle size sieving device, comprising a support and a sieving structure. A top plate is fixedly connected to the upper end of the support, a hopper is installed inside the top plate, and a sieving structure is provided at the lower end of the hopper. The sieving structure includes a frame, which is installed on the hopper. A connecting plate is installed inside the support, a bottom frame is fixedly connected to the upper surface of the connecting plate, an auxiliary plate is provided on the lower surface of the frame, and several bolts are installed inside the auxiliary plate. The auxiliary plate and the connecting plate are connected by several bolts. Several sieve discs are provided between the auxiliary plate and the bottom frame. A connecting ring is fixedly connected to the upper surface of each sieve disc, and the connecting ring is adapted to the upper sieve disc. Two connecting parts are fixedly connected to the upper surface of the connecting plate, and a cylinder is installed on the upper surface of each connecting part. The output end of the cylinder is fixedly connected to the frame.

[0007] This optimized design achieves the desired screening effect by the reciprocating motion of the screen discs during quicklime sieving, utilizing the vibration of the screen discs. The connecting rings ensure a tight fit between adjacent screen discs, preventing quicklime leakage from gaps. The auxiliary plate and connecting plate are bolted together, ensuring the stability of the screening structure and facilitating later disassembly, replacement, cleaning, and maintenance of the screen discs. The base frame provides excellent support for the screen discs, preventing them from shifting during vibration, thus improving screening efficiency and accuracy. When screen disc replacement is needed, the cylinder is activated to move the frame, which in turn moves the auxiliary plate. After the auxiliary plate separates from the screen disc, the limiting position on the screen disc is released, allowing for screen disc replacement.

[0008] Preferably, the connecting ring has a circular cross-section and is a silicone ring.

[0009] This preferred design achieves the desired effect: the silicone material provides excellent elasticity and sealing properties. When multiple screen discs are stacked sequentially via connecting rings, they fit tightly together, effectively preventing material leakage from gaps between adjacent screen discs during screening, thus ensuring screening accuracy and material collection integrity. Simultaneously, the silicone rings also act as a buffer when the screen discs are subjected to vibration or impact, reducing wear between the discs and extending their service life.

[0010] Preferably, the screen disc has a circular cross-section and is made of stainless steel.

[0011] Preferably, the lower end of the hopper is interference-fitted with the auxiliary plate, and the diameter of the lower end of the hopper is smaller than the diameter of the inner wall of the auxiliary plate.

[0012] Preferably, the plurality of sieve discs are of the same size, and the mesh size of the plurality of sieve discs gradually decreases from top to bottom.

[0013] Preferably, the upper surface of the top plate is provided with a collection structure, the collection structure including a baffle frame, the baffle frame being fixedly connected to the top plate, a butterfly valve being installed on the upper surface of the top plate, a connector being installed at the end of the butterfly valve, the connector being fixedly connected to the top plate, a connecting pipe being installed at the lower end of the connector, a dust removal component being installed at the end of the connecting pipe away from the connector, a connecting frame being installed inside the bracket, and the dust removal component being installed on the connecting frame.

[0014] By adopting this preferred solution, when it is necessary to collect dust from unloading materials, the dust raised in the hopper can be allowed to enter the connecting pipe through the connector by opening the butterfly valve, and then be efficiently collected and treated by the dust removal component. This effectively avoids dust diffusion and pollution to the working environment, protects the health and safety of operators, and improves the overall environmental performance of the device.

[0015] Preferably, the connecting pipe is made of PVC and is a corrugated pipe.

[0016] By adopting this preferred solution, the length of the corrugated pipe can be flexibly adjusted according to actual usage requirements, enhancing the adaptability of the equipment during installation and use.

[0017] Preferably, the lower surface of the connecting plate is provided with an auxiliary structure, the auxiliary structure including four springs, one end of each of the four springs being fixedly connected to the connecting plate, a round pad being fixedly connected to the lower end of each spring, a connecting seat being fixedly connected to the lower surface of the round pad, a fixing frame being fixedly connected to the lower surface of the connecting seat, and a vibration component being installed on the lower surface of the connecting plate.

[0018] By adopting this preferred solution, when the screen needs to be shaken up and down for screening, the vibration component generates high-frequency vibration, which is transmitted to the screen through the connecting plate. Combined with the elastic buffering effect of the spring, the screen maintains a stable amplitude during the up and down shaking process, effectively avoiding the problem of material splashing or screen damage caused by excessive vibration amplitude. At the same time, it improves screening efficiency and ensures that the material can quickly pass through screens of different mesh sizes to complete the grading and screening.

[0019] Preferably, a limiting rod is fixedly connected to the upper surface of the circular pad, and the limiting rod is slidably connected to the connecting plate.

[0020] By adopting this preferred solution, the limiting rod can limit the connecting plate, preventing the connecting plate from shifting or even falling off during the up-and-down movement and screening.

[0021] Preferably, the limiting rod has a circular cross-section, and the spring is sleeved on the arc surface of the limiting rod.

[0022] By adopting this preferred solution, the limiting rod can limit the spring, preventing the spring from deforming during use and improving the service life of the spring.

[0023] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, by setting up a screening structure, the effect of convenient screening of quicklime is achieved. Specifically, when quicklime needs to be screened, the frame transmits power to the screen discs through an auxiliary plate, causing the screen discs to vibrate up and down. Since the mesh size of several screen discs gradually decreases from top to bottom, after the quicklime enters the uppermost screen disc from the hopper, under the action of vibration, the smaller quicklime particles will pass through each layer of screen discs in sequence, realizing the classification and screening of quicklime of different particle sizes, and facilitating the quick replacement of screen discs.

[0024] 2. In this invention, by setting up a collection structure, the dust generated during the material pouring process can be conveniently collected and treated. Specifically, when quicklime is poured into the hopper, the dust raised will initially accumulate in the area above the hopper under the initial containment effect of the baffle frame. At this time, the butterfly valve is opened, and the dust will enter the connecting pipe through the connector under the action of airflow. The connecting pipe is made of PVC corrugated pipe, which not only has good corrosion resistance and can adapt to dusty environments, but also allows for flexible adjustment of its length and direction according to the installation position of the dust collection component, ensuring a smooth dust conveying path. Subsequently, the dust enters the dust collection component and is efficiently collected through its internal filtration or separation mechanism, thereby effectively preventing dust from spreading into the working environment, avoiding the health hazards of dust inhalation by operators, and reducing dust pollution to the equipment and the surrounding environment, thus improving the environmental protection and safety of the entire quicklime screening operation.

[0025] 3. In this invention, by setting an auxiliary structure, the effect of stabilizing the vibrating screening process of the screen disc can be easily achieved. Specifically, when the vibration component starts and generates vibration, the connecting plate, as a key component supporting the screen disc, transmits the vibration to the screen disc to achieve the screening effect. The setting of the screening pad increases the contact area between the spring and the connecting seat, so that the spring force can be transmitted to the fixed frame more evenly, reducing local stress concentration. The fixed frame provides a stable installation foundation for the entire auxiliary structure, ensuring that the auxiliary structure can maintain a good working condition under long-term vibration environment.

[0026] 4. Comparison between mechanical and manual sieves: Attached Figure Description

[0027] Figure 1 This invention provides a three-dimensional structural schematic diagram of a quicklime activity sample particle size sieving device; Figure 2 This invention provides a schematic diagram of the sieving structure of a quicklime activity sample particle size sieving device; Figure 3 This invention proposes a particle size sieving device for quicklime activity samples. Figure 2 Partial structural diagram; Figure 4 This invention provides a schematic diagram of the collection structure of a quicklime activity sample particle size sieving device; Figure 5 This invention proposes a particle size sieving device for quicklime activity samples. Figure 4 A schematic diagram of a partial structure; Figure 6 This invention provides a schematic diagram of the auxiliary structure of a quicklime activity sample particle size sieving device. Figure 7This invention proposes a particle size sieving device for quicklime activity samples. Figure 6 Enlarged view of point A.

[0028] Legend: 1. Support; 2. Top plate; 3. Hopper; 4. Screening structure; 41. Cylinder; 42. Connecting plate; 43. Connecting piece; 44. Auxiliary plate; 45. Bottom frame; 46. Screen plate; 47. Connecting ring; 48. Frame; 49. Bolt; 5. Collection structure; 51. Baffle frame; 52. Butterfly valve; 53. Connecting piece; 54. Connecting pipe; 55. Dust removal component; 56. Connecting frame; 6. Auxiliary structure; 61. Vibration component; 62. Fixing frame; 63. Connecting seat; 64. Spring; 65. Round pad; 66. Limiting rod. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0031] Example 1, such as Figure 1-7 As shown, the present invention provides a quicklime activity sample particle size sieving device, including a support 1 and a sieving structure 4. The upper end of the support 1 is fixedly connected to a top plate 2, a hopper 3 is installed inside the top plate 2, the lower end of the hopper 3 is provided with a sieving structure 4, the upper surface of the top plate 2 is provided with a collection structure 5, and the lower surface of the connecting plate 42 is provided with an auxiliary structure 6.

[0032] The following section will explain the specific setup and function of its screening structure 4, collection structure 5, and auxiliary structure 6.

[0033] like Figure 2 and Figure 3As shown, the screening structure 4 includes a frame 48, which is mounted on the hopper 3. A connecting plate 42 is installed inside the support 1. A bottom frame 45 is fixedly connected to the upper surface of the connecting plate 42. An auxiliary plate 44 is provided on the lower surface of the frame 48. Several bolts 49 are installed inside the auxiliary plate 44, and the auxiliary plate 44 is connected to the connecting plate 42 by the bolts 49. Several screen discs 46 are provided between the auxiliary plate 44 and the bottom frame 45. A connecting ring 47 is fixedly connected to the upper surface of the screen disc 46, and the connecting ring 47 is adapted to the upper screen disc 46. Two connecting parts 43 are fixedly connected to the upper surface of the connecting plate 42. A cylinder 41 is installed on the upper surface of the connecting parts 43, and the output end of the cylinder 41 is fixedly connected to the frame 48. When quicklime needs to be screened, the screen discs 46 move up and down reciprocally, and the vibration of the screen discs 46 is used to screen the quicklime. The connecting ring 47 ensures a tight fit between adjacent screen discs 46, preventing quicklime from leaking out. The auxiliary plate 44 is connected to the connecting plate 42 by bolts 49, ensuring the stability of the screening structure 4 and facilitating later disassembly, replacement, cleaning, and maintenance of the screen discs 46. The bottom frame 45 provides good support for the screen discs 46, preventing them from shifting during vibration, thus improving screening efficiency and accuracy. When the screen discs 46 need to be replaced, the starting cylinder 41 moves the frame 48, which in turn moves the auxiliary plate 44. After the auxiliary plate 44 separates from the screen discs 46, the limiting position on the screen discs 46 is released, allowing for replacement. The connecting ring 47 has a circular cross-section and is made of silicone. The silicone material provides good elasticity and sealing. When multiple screen discs 46 are stacked sequentially via connecting rings 47, they fit tightly together, effectively preventing material leakage from the gaps between adjacent screen discs 46 during screening, ensuring screening accuracy and material collection integrity. Simultaneously, the silicone rings also act as a buffer when the screen discs 46 are subjected to vibration or impact, reducing wear between them and extending their service life. The screen discs 46 have a circular cross-section and are made of stainless steel. The lower end of the hopper 3 is interference-fitted with the auxiliary plate 44. The diameter of the lower end of the hopper 3 is smaller than the diameter of the inner wall of the auxiliary plate 44. Several screen discs 46 are of the same size, and their mesh size gradually decreases from top to bottom.

[0034] like Figure 4 and Figure 5As shown, the collecting structure 5 includes a baffle frame 51, which is fixedly connected to the top plate 2. A butterfly valve 52 is installed on the upper surface of the top plate 2, and a connector 53 is installed at the end of the butterfly valve 52. The connector 53 is fixedly connected to the top plate 2, and a connecting pipe 54 is installed at the lower end of the connector 53. A dust removal component 55 is installed at the end of the connecting pipe 54 away from the connector 53. A connecting frame 56 is installed inside the bracket 1, and the dust removal component 55 is installed on the connecting frame 56. When it is necessary to collect the dust from the unloading material, the butterfly valve 52 can be opened to allow the dust raised in the hopper 3 to enter the connecting pipe 54 through the connector 53, and then be efficiently collected and treated by the dust removal component 55. This effectively avoids dust diffusion and pollution to the working environment, protects the health and safety of operators, and improves the overall environmental performance of the device. The connecting pipe 54 is made of PVC and is a corrugated pipe. The length of the corrugated pipe can be flexibly adjusted according to actual usage needs, enhancing the adaptability of the equipment during installation and use.

[0035] like Figure 6 and Figure 7 As shown, the auxiliary structure 6 includes four springs 64, one end of each spring 64 is fixedly connected to the connecting plate 42, and a round pad 65 is fixedly connected to the lower end of each spring 64. A connecting seat 63 is fixedly connected to the lower surface of the round pad 65, and a fixing frame 62 is fixedly connected to the lower surface of the connecting seat 63. A vibration component 61 is installed on the lower surface of the connecting plate 42. When the screen plate 46 needs to be shaken up and down for screening, high-frequency vibration is generated by the vibration component 61. The vibration is transmitted to the screen plate 46 through the connecting plate 42. Combined with the elastic buffering effect of the springs 64, the screen plate 46 maintains a stable amplitude during the up and down shaking, effectively avoiding the problem of material splashing or damage to the screen plate 46 due to excessive vibration amplitude. At the same time, the screening efficiency is improved, ensuring that the material can quickly pass through the screen plates 46 of different mesh sizes for grading and screening. A limit rod 66 is fixedly connected to the upper surface of the round pad 65, and the limit rod 66 is slidably connected to the connecting plate 42. The limiting rod 66 can limit the connecting plate 42, preventing it from shifting or even falling off during vertical screening. The limiting rod 66 has a circular cross-section, and the spring 64 is fitted onto the arc surface of the limiting rod 66. The limiting rod 66 can also limit the spring 64, preventing it from deforming during use and improving its service life.

[0036] The overall working principle is as follows: when quicklime needs to be screened, the screen disc 46 moves up and down reciprocally, and the vibration of the screen disc 46 achieves the screening of quicklime. The connecting ring 47 ensures a tight fit between adjacent screen discs 46, preventing quicklime from leaking out of gaps. The auxiliary plate 44 is connected to the connecting plate 42 by bolts 49, ensuring the stability of the screening structure 4 and facilitating later disassembly, replacement, cleaning, and maintenance of the screen discs 46. The bottom frame 45 provides good support for the screen discs 46, preventing them from shifting during vibration, thereby improving screening efficiency and accuracy. When the screen disc 46 needs to be replaced, the starting cylinder 41 moves the frame 48, which in turn moves the auxiliary plate 44. After the auxiliary plate 44 separates from the screen disc 46, the limiting position on the screen disc 46 is released, and the screen disc 46 can then be replaced. The silicone material provides good elasticity and sealing. When multiple screen discs 46 are stacked sequentially through the connecting ring 47, they fit tightly together, effectively preventing material from leaking out from the gaps between adjacent screen discs 46 during the screening process, ensuring the accuracy of screening and the integrity of material collection. At the same time, the silicone ring can also play a certain buffering role when the screen disc 46 is subjected to vibration or collision, reducing wear between the screen discs 46 and extending the service life of the screen disc 46.

[0037] When it is necessary to collect the dust from the unloading process, the butterfly valve 52 can be opened to allow the dust raised in the hopper 3 to enter the connecting pipe 54 through the connector 53, and then be efficiently collected and treated by the dust removal component 55. This effectively avoids dust diffusion and pollution to the working environment, protects the health and safety of operators, and improves the overall environmental performance of the device. The corrugated pipe can be flexibly adjusted in length according to actual usage needs, enhancing the adaptability of the equipment during installation and use.

[0038] When the screen plate 46 needs to be shaken up and down for screening, high-frequency vibration is generated by the vibration component 61. The vibration is transmitted to the screen plate 46 through the connecting plate 42. With the elastic buffering effect of the spring 64, the screen plate 46 maintains a stable amplitude during the up and down shaking process, effectively avoiding the problem of material splashing or damage to the screen plate 46 due to excessive vibration amplitude. At the same time, the screening efficiency is improved, ensuring that the material can quickly pass through the screen plates 46 of different mesh sizes for grading and screening. The limiting rod 66 can limit the connecting plate 42 to prevent it from shifting or even falling off during the up and down movement screening. The limiting rod 66 can also limit the spring 64 to prevent it from deforming during use, thus improving the service life of the spring 64.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A particle size sieving device for quicklime activity samples, comprising a support (1) and a sieving structure (4), characterized in that: The upper end of the support (1) is fixedly connected to a top plate (2), and a hopper (3) is installed inside the top plate (2). The lower end of the hopper (3) is provided with a screening structure (4), which includes a frame (48). The frame (48) is installed on the hopper (3). A connecting plate (42) is installed inside the support (1). A bottom frame (45) is fixedly connected to the upper surface of the connecting plate (42). An auxiliary plate (44) is provided on the lower surface of the frame (48). Several bolts (49) are provided inside the auxiliary plate (44). The auxiliary plate (44) and the connecting plate (42) are connected by several bolts (49). Several screens (46) are provided between the auxiliary plate (44) and the bottom frame (45). A connecting ring (47) is fixedly connected to the upper surface of the screen (46). The connecting ring (47) is adapted to the upper screen (46). Two connectors (43) are fixedly connected to the upper surface of the connecting plate (42). A cylinder (41) is installed on the upper surface of the connector (43). The output end of the cylinder (41) is fixedly connected to the frame (48).

2. The quicklime activity sample particle size sieving device according to claim 1, characterized in that: The connecting ring (47) has a circular cross-section and is a silicone ring.

3. The quicklime activity sample particle size sieving device according to claim 1, characterized in that: The cross-section of the sieve disc (46) is circular, and the sieve disc (46) is a stainless steel disc.

4. The quicklime activity sample particle size sieving device according to claim 1, characterized in that: The lower end of the hopper (3) is interference-fitted to the auxiliary plate (44), and the diameter of the lower end of the hopper (3) is smaller than the diameter of the inner wall of the auxiliary plate (44).

5. The quicklime activity sample particle size sieving device according to claim 1, characterized in that: The sieves (46) are of the same size, and the mesh size of the sieves (46) gradually decreases from top to bottom.

6. The quicklime activity sample particle size sieving device according to claim 1, characterized in that: The upper surface of the top plate (2) is provided with a collection structure (5), the collection structure (5) includes a baffle (51), the baffle (51) is fixedly connected to the top plate (2), a butterfly valve (52) is installed on the upper surface of the top plate (2), a connector (53) is installed at the end of the butterfly valve (52), the connector (53) is fixedly connected to the top plate (2), a connecting pipe (54) is installed at the lower end of the connector (53), a dust removal component (55) is installed at the end of the connecting pipe (54) away from the connector (53), a connecting frame (56) is installed inside the bracket (1), and the dust removal component (55) is installed on the connecting frame (56).

7. The quicklime activity sample particle size sieving device according to claim 6, characterized in that: The connecting pipe (54) is made of PVC and is a corrugated pipe.

8. The quicklime activity sample particle size sieving device according to claim 6, characterized in that: The lower surface of the connecting plate (42) is provided with an auxiliary structure (6), which includes four springs (64). One end of each of the four springs (64) is fixedly connected to the connecting plate (42). A round pad (65) is fixedly connected to the lower end of each spring (64). A connecting seat (63) is fixedly connected to the lower surface of the round pad (65). A fixing frame (62) is fixedly connected to the lower surface of the connecting seat (63). A vibration component (61) is installed on the lower surface of the connecting plate (42).

9. The quicklime activity sample particle size sieving device according to claim 1, characterized in that: A limiting rod (66) is fixedly connected to the upper surface of the round pad (65), and the limiting rod (66) is slidably connected to the connecting plate (42).

10. The quicklime activity sample particle size sieving device according to claim 9, characterized in that: The limiting rod (66) has a circular cross-section, and the spring (64) is sleeved on the arc surface of the limiting rod (66).

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