A screening machine for sodium dichloroisocyanurate powder

Abstract

The utility model discloses a kind of sodium dichloroisocyanurate powder screening machines, including shell, the downside wall of shell is equipped with discharge port, the outer arc surface of shell is hinged with collection door by hinge, the outer arc surface upper end of shell is equipped with feed pipe, further including screening mechanism;Screening mechanism: it includes primary efficiency screening, secondary screening and middle layer screening plate, the primary efficiency screening is set to the inside upper end of shell, middle layer screening plate is set to the middle part of the inner arc surface of shell, the secondary screening includes transition hopper, installation cylinder and secondary screening bucket, the transition hopper is set to the middle part of the inner arc surface of shell and located in the lower end of middle layer screening plate, secondary screening bucket is connected with installation cylinder in the middle part of transition hopper lower end pipeline, this sodium dichloroisocyanurate powder screening machine, by primary efficiency screening, middle layer screening plate and the multistage screening design of secondary screening, in combination with screening bucket centrifugal screening and the sieve hole anti-blocking of air pipe to screening bucket, realize efficient accurate screening and anti-blocking.

Description

Technical Field

[0001] This utility model relates to the field of sodium dichloroisocyanurate powder screening technology, specifically a screening machine for sodium dichloroisocyanurate powder. Background Technology

[0002] In the chemical industry, sodium dichloroisocyanurate powder is an important disinfectant and bleaching agent. Its product quality directly affects the application effect. As related industries increase their requirements for the uniformity of powder particle size and impurity content, efficient and precise screening process has become a key link to ensure product performance. The screening process not only needs to achieve effective separation of particles of different sizes, but also needs to take into account the ease of operation and maintenance efficiency of the equipment to meet the needs of industrial production.

[0003] Currently, screening equipment for sodium dichloroisocyanurate powder is mainly designed based on traditional screening principles. Typical structures include horizontal vibrating screens and rotary vibrating screens. Taking a horizontal vibrating screen as an example, its working process is as follows: the material enters the horizontally set screen surface through the feed inlet, and the eccentric block driven by the motor generates vibration, causing the material to move in a straight line or circular motion on the screen. Particles with a diameter smaller than the screen aperture pass through the screen and fall into the discharge port, while larger particles move along the screen surface to the slag discharge port and are discharged. To improve screening efficiency, some equipment introduces a multi-layer screen stacked structure, achieving preliminary classification through screens with different apertures. In addition, some equipment attempts to use a fan to assist screening, utilizing airflow to carry fine particles through the screen. However, existing technologies have some problems. Single-layer or simple multi-layer screen structures cannot achieve the progressive classification of "coarse screening to fine screening," making it difficult to meet the precise separation requirements of sodium dichloroisocyanurate powder for different particle size ranges. This results in a wide particle size distribution range in the finished product, incomplete removal of impurities, a lack of dynamic anti-clogging design, and prominent problems of dust accumulation and particle agglomeration on the screen surface. Traditional vibration or airflow-assisted methods can only provide force in one direction, which cannot effectively break the particle bridging structure near the sieve holes. Frequent machine shutdowns and manual cleaning are required, which seriously affects the continuity of production. To address this, we propose a screening machine for sodium dichloroisocyanurate powder. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a screening machine for sodium dichloroisocyanurate powder, which includes multi-stage screening with primary screening, middle screening plate and secondary screening, as well as anti-clogging screen holes in the screening barrel, and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a screening machine for sodium dichloroisocyanurate powder, comprising a housing, a discharge port on the lower side wall of the housing, a collection door hinged to the outer arc surface of the housing, a feed pipe at the upper end of the outer arc surface of the housing, and a screening mechanism;

[0006] Screening mechanism: It includes primary screening, secondary screening, and middle screening plate. The primary screening is located at the upper inner part of the shell, and the middle screening plate is located in the middle of the inner arc surface of the shell. The secondary screening includes a transition funnel, a mounting cylinder, and a secondary screening barrel. The transition funnel is located in the middle of the inner arc surface of the shell and at the lower end of the middle screening plate. The mounting cylinder is connected in series in the middle of the lower end pipe of the transition funnel. The secondary screening barrel is located inside the mounting cylinder. The screening part in the middle of the secondary screening barrel is located inside the lower end pipe of the transition funnel. The multi-stage screening design of primary screening, middle screening plate, and secondary screening, combined with centrifugal screening in the screening barrel and anti-clogging of the screen holes in the air duct, achieves efficient and accurate screening and anti-clogging.

[0007] Furthermore, a control switch group is provided on the right side of the housing, and the input terminal of the control switch group is electrically connected to an external power supply for stable control.

[0008] Furthermore, the primary screening includes a screening barrel, baffles, air duct, fan, and motor. The screening barrel is rotatably connected to the top wall of the outer casing via a rotating shaft. A material gate is hinged to the front end of the outer arc surface of the screening barrel. The air duct is located on the upper end of the right side wall of the outer arc surface of the outer casing. The upper end of the screening barrel is provided with evenly distributed baffles, which are all configured to cooperate with the air duct. The fan is installed on the outer arc surface of the outer casing, and the output port of the fan is fixedly connected to the right end of the air duct. A motor is installed on the upper side of the outer casing, and the output shaft of the motor is fixedly connected to the center of the upper end face of the rotating shaft. The input ends of the motor and the fan are electrically connected to the input ends of the control switch group to facilitate primary screening.

[0009] Furthermore, the secondary screening also includes a sealed bearing, a sliding groove, a protrusion, a threaded column, and an internally threaded sleeve. The front inner wall of the mounting cylinder is provided with a sealed bearing, and the inner arc surface of the inner ring of the sealed bearing is provided with evenly distributed sliding grooves. The protrusions are evenly arranged on the front outer arc surface of the secondary screening barrel, and the protrusions are all slidably connected to the adjacent sliding grooves on the rear side. The threaded column is provided on the rear side of the secondary screening barrel, and the internally threaded sleeve is rotatably connected to the rear side of the inner arc surface of the outer shell. The threaded column and the internally threaded sleeve are threadedly connected, which facilitates the disassembly and rotation of the secondary screening.

[0010] Furthermore, the secondary screening also includes a motor, which is located at the rear end of the outer arc surface of the housing. The output shaft of the motor is fixedly connected to the center of the rear end face of the shaft on the rear side of the internal threaded sleeve. The input end of the motor is electrically connected to the input end of the control switch group for stable driving.

[0011] Furthermore, the screening mechanism also includes a tilting door, which is threadedly connected to the inside of the tilting port on the front side wall of the secondary screening barrel, and can discharge the material remaining inside the secondary screening.

[0012] Furthermore, the screening mechanism also includes an auxiliary pipe and through holes. The auxiliary pipe is located inside the mounting cylinder, and through holes are provided on both the front and rear side walls of the auxiliary pipe. The inner arc surface of the through holes is slidably connected to the outer arc surface of the secondary screening barrel, allowing the material to enter the interior of the secondary screening.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This sodium dichloroisocyanurate powder screening machine has the following advantages:

[0014] This screening mechanism achieves efficient and precise screening through multi-stage screening: the material enters the screening barrel through the feed pipe, and the motor drives it to rotate at high speed. Under the action of centrifugal force and blower (baffles periodically block the airflow to prevent screen hole blockage), the primary coarse screening is completed. After coarse screening, the material passes through the middle screening plate to intercept large particles. The material that meets the particle size requirement enters the secondary screening barrel along the transition funnel. The motor drives the secondary screening barrel to rotate (the protrusions slide along the chute). The material falls into the barrel through the auxiliary pipe, and the fine particles are discharged through the screen holes and discharged from the discharge port, achieving fine screening. After screening, the material door of the screening barrel can be opened to clean large particle impurities, the secondary screening barrel can be rotated out (the threaded column disengages from the inner threaded sleeve) to clean the screen residue, and the tilting door can be unscrewed to remove residual particles in the barrel. The operation is convenient and maintenance is easy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a structural schematic diagram showing a cross-section of the outer casing of this utility model;

[0017] Figure 3 This is a partial cross-sectional view of the upper part of the outer shell of this utility model;

[0018] Figure 4 This is a cross-sectional view of the rear side of the outer casing of this utility model.

[0019] Figure 5 This is an enlarged structural schematic diagram of point A of this utility model;

[0020] Figure 6 This is a schematic diagram of the partial explosion of the transition funnel and secondary screening barrel of this utility model;

[0021] Figure 7 This is an enlarged structural schematic diagram of section B of this utility model;

[0022] Figure 8 This is a partial cross-sectional view of the front side of the transition funnel of this utility model.

[0023] In the diagram: 1. Outer shell; 2. Screening mechanism; 21. Primary screening; 211. Screening barrel; 212. Baffle; 213. Air duct; 214. Fan; 215. Motor; 22. Secondary screening; 221. Transition funnel; 222. Mounting cylinder; 223. Sealed bearing; 224. Slide groove; 225. Secondary screening barrel; 226. Protrusion; 227. Threaded column; 228. Internal threaded sleeve; 229. Motor; 23. Middle layer screening plate; 24. Auxiliary pipe; 25. Through hole; 26. Tilting door; 3. Collection door; 4. Feed pipe; 5. Discharge port; 6. Control switch group. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-8 This embodiment provides a technical solution: a screening machine for sodium dichloroisocyanurate powder, including a housing 1, an exhaust port on the upper side wall of the housing 1, a control switch group 6 on the right side of the housing 1, the input end of the control switch group 6 being electrically connected to an external power supply, a discharge port 5 on the lower side wall of the housing 1, a collection door 3 hinged to the outer arc surface of the housing 1 (a door lock is provided between the collection door 3 and the housing 1 away from the hinge, the door lock being a common door lock in the prior art), a feed pipe 4 at the upper end of the outer arc surface of the housing 1 (a blocking door can be hinged to the front end of the feed pipe 4, a door lock is also provided between the blocking door and the feed pipe 4, the door lock being a conventional door lock), and a screening mechanism 2;

[0026] Screening mechanism 2 includes a primary screening unit 21, a secondary screening unit 22, and a middle screening plate 23. The primary screening unit 21 is located inside the upper part of the outer casing 1. The primary screening unit 21 includes a screening barrel 211, baffles 212, air ducts 213, a fan 214, and a motor 215. The screening barrel 211 is rotatably connected to the top wall of the outer casing 1 via a rotating shaft. The outer arc front end of the screening barrel 211 is hinged to a material door (a door lock is also provided between the material door and the screening barrel 211, and the door lock is a conventional opening and closing lock). The air duct 213 is located on the upper part of the right side wall of the outer arc surface of the outer casing 1. The upper end of the screening barrel 211 is provided with evenly distributed baffles 212, which are all configured to cooperate with the air ducts 213. The fan 214 is installed on the outer arc surface of the outer casing 1. The output port of fan 214 is fixedly connected to the right end of the air duct 213. A motor 215 is installed on the upper side of the outer casing 1. The output shaft of the motor 215 is fixedly connected to the center of the upper end face of the rotating shaft. The input ends of the motor 215 and the fan 214 are both electrically connected to the input ends of the control switch group 6. The middle layer screening plate 23 is located in the middle of the inner arc surface of the outer casing 1. The secondary screening 22 includes a transition funnel 221, an installation cylinder 222, and a secondary screening barrel 225. The transition funnel 221 is located in the middle of the inner arc surface of the outer casing 1 and is located at the lower end of the middle layer screening plate 23. The installation cylinder 222 is connected in series in the middle of the lower end pipe of the transition funnel 221. The secondary screening barrel 225 is provided inside the installation cylinder 222. The screening part in the middle of the secondary screening barrel 225 is located in the lower end pipe of the transition funnel 221. Inside the secondary screening chamber 22, the secondary screening unit 22 also includes a sealed bearing 223, a sliding groove 224, a protrusion 226, a threaded column 227, and an internally threaded sleeve 228. The sealed bearing 223 is located on the inner wall of the front side of the mounting cylinder 222. The inner arc surface of the inner ring of the sealed bearing 223 has evenly distributed sliding grooves 224. The protrusions 226 are evenly distributed on the outer arc surface of the front end of the secondary screening chamber 225, and each protrusion 226 is slidably connected to the adjacent sliding groove 224 on the rear side. The threaded column 227 is located on the rear side of the secondary screening chamber 225. The internally threaded sleeve 228 is rotatably connected to the rear side of the inner arc surface of the outer casing 1, and the threaded column 227 is threadedly connected to the internally threaded sleeve 228. The secondary screening unit 22 also includes a motor 229, which is located at the rear end of the outer arc surface of the outer casing 1. The output shaft of the motor 229 is fixedly connected to the center of the rear end face of the shaft body on the rear side of the internal threaded sleeve 228. The input end of the motor 229 is electrically connected to the input end of the control switch group 6. The screening mechanism 2 also includes a tilting door 26, which is threadedly connected to the inside of the tilting port on the front side wall of the secondary screening barrel 225. The screening mechanism 2 also includes an auxiliary pipe 24 and a through hole 25. The auxiliary pipe 24 is set inside the mounting cylinder 222. The front and rear side walls of the auxiliary pipe 24 are provided with through holes 25. The inner arc surface of the through hole 25 is slidably connected to the outer arc surface of the secondary screening barrel 225. (The auxiliary pipe 24 allows sodium dichloroisocyanurate powder falling from the pipe of the transition funnel 221 to enter the interior of the secondary screening barrel 225 through the sieve holes of the secondary screening barrel 225.)Sodium dichloroisocyanurate powder that cannot pass through the sieve holes of the secondary screening barrel 225 will temporarily stay outside the secondary screening barrel 225. The material enters the equipment through the feed pipe 4 and passes through the primary screening 21 (coarse screening), the middle screening plate 23 (preliminary filtration), and the secondary screening 22 (fine screening) in sequence. Finally, qualified material is discharged from the discharge port 5, and the remaining material and impurities are cleaned through the tilting door 26 and the collection door 3. The specific process is as follows: First, open the sealing door and material door and their corresponding locks in sequence, put sodium dichloroisocyanurate powder into the screening barrel 211, and then close the doors and locks; operate the control switch group 6 to start the motor 215, which drives the screening barrel 211 to rotate at high speed through the rotating shaft. At the same time, the blower 214 blows air into the screening barrel 211 through the air duct 213. The baffle 212 at the top of the screening barrel 211 periodically moves closer to or further away from the left end of the air duct 213 to achieve intermittent airflow obstruction and release. Under the action of centrifugal force, fine particles fall through the screen holes of the screening barrel, while large particles remain in the barrel. The airflow blows up dust to prevent the screen holes from clogging. After screening, open the material door at the front of the screening barrel to remove large particles. The middle screening plate 23 intercepts larger particles that have passed through the primary screening and guides the material that meets the initial particle size requirements to slide down the upper inclined surface of the transition funnel 221. Above the secondary screening barrel 225, particles that do not pass through are temporarily stored above the middle screening plate and can be periodically cleaned through the collection door 3 on the side of the outer casing 1. The motor 229 drives the internal threaded sleeve 228 to rotate, causing the secondary screening barrel 225 to rotate synchronously. Material falls above the secondary screening barrel 225 through the auxiliary pipe 24. Fine particles are discharged through the screen holes and exit through the discharge port 5 via the lower pipe of the transition funnel 221. After a period of time, the collection door 3 is opened, and the secondary screening barrel 225 is rotated to disengage the threaded column 227 from the internal threaded sleeve 228. The secondary screening barrel 225 is then pulled out (the outer arc protrusion 226 slides along the sliding groove 224 of the sealing bearing 223). Material that does not pass through the screen holes is discharged through the pipe from the discharge port 5 after the barrel is pulled out. Then, the tilting door 26 is turned down to pour out the remaining particles in the secondary screening barrel 225, completing the collection process and facilitating the screening of sodium dichloroisocyanurate powder.

[0027] The working principle of the sodium dichloroisocyanurate powder screening machine provided by this utility model is as follows: The material enters the equipment through the feed pipe 4 and passes through the primary screening 21 (coarse screening), the middle screening plate 23 (preliminary filtration), and the secondary screening 22 (fine screening) in sequence. Finally, the qualified material is discharged from the discharge port 5, and the rest is cleaned through the tilting door 26 and the collection door 3. First, the sealing door and the material door and the corresponding door locks are opened in sequence. Then, the sodium dichloroisocyanurate powder to be screened is put into the screening barrel 211. Then, the sealing door and the material door and the corresponding door locks are closed. Then, the control switch group 6 is operated to start the motor 215, which drives the screening barrel 211 to rotate at high speed through the rotating shaft. At the same time, the blower 214 blows air into the screening barrel 211 through the air pipe 213. As 211 rotates, the uniform baffle 212 at its upper end continuously moves closer to or further away from the left end of the air duct 213. When the baffle 212 rotates to the left end of the air duct 213, the air blown out of the air duct 213 is temporarily blocked by the baffle 212, thus preventing it from entering the interior of the screening barrel 211. When the baffle 212 rotates away from the air duct 213, the air blown out of the air duct 213, no longer blocked by the baffle 212, can enter the interior of the screening barrel 211 through the screen holes. Under the action of centrifugal force, fine particles fall through the screen holes of the screening barrel, while large particles and impurities remain in the barrel if they clump together. The airflow generated by the fan can blow up the suspended dust, preventing the screen holes from clogging (excess air can be discharged from the exhaust port on the upper side wall of the outer casing 1). After screening, the front end of the screening barrel is opened. The material gate removes large particles of impurities. The middle screening plate 23 intercepts larger particles that slip through the primary screening 21, guiding materials that meet the initial particle size requirements into the transition funnel 221. The material then slides down the upper inclined surface of the transition funnel 221 through the middle screening plate 23 to the upper part of the secondary screening barrel 225. Particles that do not pass through are temporarily stored above the middle screening plate and can be periodically cleaned through the collection door 3 on the side of the outer casing 1. The motor 229 drives the internal threaded sleeve 228 to rotate. Because the threaded column 227 is threadedly connected to the internal threaded sleeve, the secondary screening barrel 225 rotates synchronously. Material falls from the transition funnel 221 through the auxiliary pipe 24 into the upper part of the secondary screening barrel 225. Fine particles enter the interior of the secondary screening barrel 225 through the screen holes. During the rotation of the secondary screening barrel 225, fine particles inside are discharged from the screen hole currently in which the secondary screening barrel 225 is located. They then fall through the pipe at the lower end of the transition funnel 221 and are finally discharged from the discharge port 5 for collection by workers. After a period of time, the workers open the collection door 3 and rotate the secondary screening barrel 225, causing the threaded post 227 at the rear end of the secondary screening barrel 225 to disengage from the threaded relationship with the internal threaded sleeve 228. The secondary screening barrel 225 is then pulled out, and the protrusion 226 on the outer arc surface of the secondary screening barrel 225 slides along the groove 224 of the sealing bearing 223. At this time, material that has not passed through the screen hole of the secondary screening barrel 225 falls through the pipe at the lower end of the transition funnel 221 after the secondary screening barrel 225 is pulled out and is finally discharged from the discharge port 5.Workers collect the falling material, then unscrew the tilting gate 26 to empty the remaining sodium dichloroisocyanurate particles from the secondary screening tank 225, completing the final collection.

[0028] It is worth noting that the fan 214 disclosed in the above embodiments can be model RB055, and the motor 215 and motor 229 can both be servo motors. The control switch group 6 is provided with control buttons that correspond one-to-one with the fan 214, motor 215 and motor 229 and are used to control their switching.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A screening machine for sodium dichloroisocyanurate powder, comprising a housing (1), wherein a discharge port (5) is provided on the lower side wall of the housing (1), a collection door (3) is hinged to the outer arc surface of the housing (1) via a hinge, and a feed pipe (4) is provided at the upper end of the outer arc surface of the housing (1), characterized in that: It also includes screening agencies (2); Screening mechanism (2): It includes a primary screening (21), a secondary screening (22) and a middle screening plate (23). The primary screening (21) is located at the upper part of the inner side of the outer shell (1), and the middle screening plate (23) is located in the middle of the inner arc surface of the outer shell (1). The secondary screening (22) includes a transition funnel (221), an installation cylinder (222) and a secondary screening barrel (225). The transition funnel (221) is located in the middle of the inner arc surface of the outer shell (1) and at the lower end of the middle screening plate (23). The installation cylinder (222) is connected in series in the middle of the lower end pipe of the transition funnel (221). The secondary screening barrel (225) is provided inside the installation cylinder (222). The screening part in the middle of the secondary screening barrel (225) is located inside the lower end pipe of the transition funnel (221).

2. The screening machine for sodium dichloroisocyanurate powder according to claim 1, characterized in that: The right side of the housing (1) is provided with a control switch group (6), and the input end of the control switch group (6) is electrically connected to an external power source.

3. The screening machine for sodium dichloroisocyanurate powder according to claim 2, characterized in that: The primary screening (21) includes a screening barrel (211), baffles (212), air duct (213), fan (214), and motor (215). The screening barrel (211) is rotatably connected to the top wall of the outer shell (1) via a rotating shaft. The outer arc front end of the screening barrel (211) is hinged to a material door via a hinge. The air duct (213) is located on the upper end of the right side wall of the outer arc surface of the outer shell (1). The upper end of the screening barrel (211) is provided with evenly distributed baffles (212). 2) The baffle (212) is set in conjunction with the air duct (213). The fan (214) is installed on the outer arc surface of the outer shell (1). The output port of the fan (214) is fixedly connected to the right end of the air duct (213). The upper side of the outer shell (1) is equipped with a motor (215). The output shaft of the motor (215) is fixedly connected to the center of the upper end face of the rotating shaft. The input ends of the motor (215) and the fan (214) are electrically connected to the input end of the control switch group (6).

4. The screening machine for sodium dichloroisocyanurate powder according to claim 2, characterized in that: The secondary screening (22) also includes a sealed bearing (223), a sliding groove (224), a protrusion (226), a threaded column (227), and an internal threaded sleeve (228). The inner wall of the front side of the mounting cylinder (222) is provided with a sealed bearing (223). The inner arc surface of the inner ring of the sealed bearing (223) is provided with a uniformly distributed sliding groove (224). The protrusion (226) is uniformly arranged on the outer arc surface of the front end of the secondary screening barrel (225). The protrusion (226) is slidably connected to the sliding groove (224) adjacent to the rear side. The threaded column (227) is arranged on the rear side of the secondary screening barrel (225). The internal threaded sleeve (228) is rotatably connected to the rear side of the inner arc surface of the outer shell (1). The threaded column (227) is threadedly connected to the internal threaded sleeve (228).

5. The screening machine for sodium dichloroisocyanurate powder according to claim 4, characterized in that: The secondary screening (22) also includes a motor (229), which is located at the rear end of the outer arc surface of the outer shell (1). The output shaft of the motor (229) is fixedly connected to the center of the rear end face of the shaft body on the rear side of the internal thread sleeve (228). The input end of the motor (229) is electrically connected to the input end of the control switch group (6).

6. The screening machine for sodium dichloroisocyanurate powder according to claim 1, characterized in that: The screening mechanism (2) also includes a tilting door (26), which is threadedly connected to the inside of the tilting port on the front side wall of the secondary screening barrel (225).

7. The screening machine for sodium dichloroisocyanurate powder according to claim 1, characterized in that: The screening mechanism (2) also includes an auxiliary pipe (24) and a through hole (25). The auxiliary pipe (24) is located inside the mounting cylinder (222). The front and rear side walls of the auxiliary pipe (24) are provided with through holes (25). The inner arc surface of the through hole (25) is slidably connected to the outer arc surface of the secondary screening barrel (225).

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