Automatic seed crystal circulation system of crystallization softening equipment

Abstract

The utility model provides an automatic seed crystal circulating system of crystallization softening equipment, and belongs to the field of water treatment equipment. According to the automatic seed crystal circulation system of the crystallization softening equipment, particles discharged from a particle discharge port of the crystallization softening equipment, overflow liquid discharged from an overflow port of a metering barrel and accumulated particles discharged from a discharge valve of the metering barrel are collected by a particle collection device, and the particles and the liquid discharged from all parts are uniformly treated; the treatment process is simplified, and particle waste is avoided; the spiral lifting assembly is communicated with the bottom of the collecting hopper, during operation, solid particles at the bottom of the collecting hopper are gradually lifted upwards, and liquid in the collecting hopper cannot be lifted by the spiral lifting assembly, so that the solid particles flow back to the collecting hopper, and separation of the particles and the liquid is achieved; and after the concentrated particles are separated from the liquid, the powder grinding machine is used for uniformly crushing the particles, and the screening device is used for uniformly screening the particles, so that particle waste caused by the fact that different systems only screen required crushed particles is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of water treatment equipment, and more specifically, to an automatic crystal seed circulation system for a crystallization and softening equipment. Background Art

[0002] Most current water treatment systems use crystallization and softening equipment to remove ions from water. Crystallization and softening equipment will discharge crystal particles during the treatment process. In traditional production, these particles can be used as seeds to continue to be put into the crystallization and softening equipment after being crushed; in recent years, it has been found that since the particles are alkaline, these particles can also be crushed and used in the desulfurization tower.

[0003] However, the current water treatment system and desulfurization system are usually independent of each other. In the water treatment system, the particles need to be crushed, screened, and processed before they can be fed back to the crystallization and softening equipment as seeds; in the desulfurization system, the particles also need to be crushed, screened, and processed before they can be added to the desulfurization tower as a desulfurizer. In this way, the recycling of particles is not systematic and the degree of automation is not high. There is a certain amount of equipment duplication in the two systems. In addition, the water treatment system only screens the crushed particles that meet the seed requirements, and the other parts are not used; while the desulfurization system only screens the crushed particles that meet the desulfurization requirements, and the other parts are not used, resulting in a certain degree of particle waste. Utility Model Content

[0004] In view of this, an embodiment of the present application provides an automatic seed circulation system for a crystallization and softening device to solve the technical problems existing in the prior art, such as the lack of systematicness in the recycling of particles, low degree of automation, certain equipment duplication in the two systems, and a certain degree of waste of particles.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] On the one hand, a crystal seed automatic circulation system for a crystallization and softening device is provided, comprising:

[0007] A crystallization and softening device having a particle detection port and a particle discharge port;

[0008] The particle discharge detection device comprises a metering barrel and a weighing assembly; the metering barrel is provided with an overflow port, and receives the liquid flow discharged from the particle detection port to form an overflow at the overflow port; the weighing assembly detects the weight increase of the receiving container and its contents, and is used to determine that the crystallization and softening equipment needs to discharge particles;

[0009] The particle collecting device comprises a collecting bucket and a spiral lifting assembly; the particle discharge port and the overflow port are connected to the collecting bucket; the lower end of the spiral lifting assembly is connected to the bottom of the collecting bucket and is lifted upward;

[0010] A grinding mill is suitable for crushing crystalline particles; the high end of the spiral lifting assembly is connected to the grinding mill;

[0011] The screening device is connected to the discharge port of the grinding mill and is suitable for screening the powder ground by the grinding mill into desulfurization crushed particles and seed crushed particles.

[0012] In certain embodiments, the desulfurization crushed particle outlet of the screening device is transported to a desulfurization tower through a pipeline.

[0013] In certain embodiments, the seed crushing particle outlet of the screening device is transported to the seed adding device of the crystallization and softening equipment through a pipeline.

[0014] In some embodiments, the desulfurization crushed particles are 300 meshes, and the seed crushed particles are 40-60 meshes.

[0015] In certain embodiments, the screening device is a multi-layer screening structure, including a coarse screen structure, a medium screen structure and a fine screen structure from top to bottom; the screen of the coarse screen structure is 40 mesh, the screen of the medium screen structure is 60 mesh, and the screen of the fine screen structure is 300 mesh; the material on the medium screen structure is seed crushed particles, and the material on the fine screen structure is desulfurization crushed particles.

[0016] In some embodiments, the bottom of the collecting hopper is contracted to form a long strip opening, and the long strip opening is tilted with one end high and the other end low;

[0017] The spiral lifting assembly comprises:

[0018] A first spiral conveying unit is arranged obliquely along the long strip opening, is communicated with the long strip opening, and conveys toward the high end;

[0019] The second spiral conveying unit is arranged to be inclined with a slope greater than that of the first spiral conveying unit; the lower end of the second spiral conveying unit is communicated with the high end of the first spiral conveying unit.

[0020] In some embodiments, a drain port is provided at the lower end of the bottom of the collecting bucket.

[0021] In certain embodiments, the grinding mill is a ball mill.

[0022] In some embodiments, a discharge valve is further provided at the bottom of the metering barrel, and the discharge valve is connected to the collection bucket.

[0023] The beneficial effect of the automatic crystal seed circulation system of the crystallization and softening equipment provided in the embodiment of the present application is that: compared with the prior art, the automatic crystal seed circulation system of the crystallization and softening equipment in the embodiment of the present application adopts a particle discharge detection device, and detects the weight increase of the receiving container and its contents through a weighing component, indicating that the liquid flow discharged from the detection tube carries crystal particles. The operator or control system can control the crystallization and softening equipment to discharge particles, thereby improving the automation level of the equipment;

[0024] The particle collecting device is used to collect particles discharged from the particle discharge port of the crystallization and softening equipment, the overflow liquid discharged from the overflow port of the metering bucket, and the accumulated particles discharged from the discharge valve of the metering bucket, and the particles and liquid discharged from each part are uniformly processed, simplifying the processing flow and avoiding particle waste; and the spiral lifting component is connected to the bottom of the collecting bucket. During operation, the solid particles at the bottom of the collecting bucket are gradually lifted upward, while the liquid in the collecting bucket cannot be lifted by the spiral lifting component due to its own fluidity, and thus flows back to the collecting bucket, thereby achieving separation of particles from liquid;

[0025] After the concentrated particles are separated from the liquid, they are uniformly crushed by a grinding mill and uniformly screened by a screening device, avoiding the waste of particles caused by different systems only screening the crushed particles they need. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic diagram of an automatic seed circulation system for a crystallization and softening device provided in an embodiment of the present application;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the particle collection device;

[0029] Figure 3 for Figure 1 Schematic diagram of the structure of the particle emission detection device.

[0030] Among them, the reference numerals in the figure are:

[0031] 1-crystallization and softening equipment; 11-particle detection port; 12-particle discharge port; 13-crystal seed adding device; 2-particle discharge detection device; 21-metering barrel; 211-overflow port; 212-discharge valve; 22-weighing assembly; 3-particle collecting device; 31-collecting bucket; 311-liquid discharge port; 32-screw lifting assembly; 321-first screw conveying unit; 322-second screw conveying unit; 4-grinding mill; 5-screening device; 6-desulfurization tower. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application 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 present application and are not used to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0036] Please also read Figures 1 to 3 The automatic crystal seed circulation system of the crystal softening equipment provided in the embodiment of the present application is now described. A crystal seed circulation system of the crystal softening equipment comprises:

[0037] A crystallization and softening device having a particle detection port and a particle discharge port;

[0038] The particle discharge detection device comprises a metering barrel and a weighing assembly; the metering barrel is provided with an overflow port, and receives the liquid flow discharged from the particle detection port to form an overflow at the overflow port; the weighing assembly detects the weight increase of the receiving container and its contents, and is used to determine that the crystallization and softening equipment needs to discharge particles;

[0039] The particle collecting device comprises a collecting bucket and a spiral lifting assembly; the particle discharge port and the overflow port are connected to the collecting bucket; the lower end of the spiral lifting assembly is connected to the bottom of the collecting bucket and is lifted upward;

[0040] A grinding mill is suitable for crushing crystalline particles; the high end of the spiral lifting assembly is connected to the grinding mill;

[0041] The screening device is connected to the discharge port of the grinding mill and is suitable for screening the powder ground by the grinding mill into desulfurization crushed particles and seed crushed particles.

[0042] Compared with the prior art, the crystal seed automatic circulation system of the crystallization and softening equipment in the embodiment of the present application adopts a particle discharge detection device, which detects the weight increase of the receiving container and its contents through a weighing component, indicating that the liquid flow discharged from the detection tube carries crystal particles. The operator or control system can control the crystallization and softening equipment to discharge particles, thereby improving the automation level of the equipment;

[0043] The particle collecting device is used to collect particles discharged from the particle discharge port of the crystallization and softening equipment and the overflow liquid discharged from the overflow port of the metering bucket, and the particles and liquid discharged from each part are uniformly processed, simplifying the processing flow and avoiding particle waste; and the spiral lifting component is connected to the bottom of the collecting bucket. During operation, the solid particles at the bottom of the collecting bucket are gradually lifted upward, while the liquid in the collecting bucket cannot be lifted by the spiral lifting component due to its own fluidity, and thus flows back to the collecting bucket, thereby achieving separation of particles from liquid;

[0044] After the concentrated particles are separated from the liquid, they are uniformly crushed by a grinding mill and uniformly screened by a screening device, avoiding the waste of particles caused by different systems only screening the crushed particles they need.

[0045] In this embodiment, the crystallization and softening equipment can refer to the common crystallization and softening water treatment equipment on the market, and can be a crystallization granulation fluidized bed. The seed feeding port of the crystallization and softening equipment is used to feed the seed crystals. The seed crystal is a solid material with good crystallization performance. It can serve as a template and catalyst to promote the crystallization and precipitation process of the hardness component. In practice, the particles discharged from the crystallization and softening equipment can be crushed, and the crushed particles of a certain size can be selected and mixed into the purchased new seed crystals to reduce the amount of new seed crystals. The particle detection port of the crystallization and softening equipment is located at a certain height of the crystallization and softening equipment. When the particles inside the crystallization and softening equipment reach a certain number, the particles are discharged from the particle detection port together with the liquid. At this time, the crystallization and softening equipment needs to discharge particles. The particle discharge port of the crystallization and softening equipment is located at the bottom of the crystallization and softening equipment, which is used to discharge the particles accumulated at the bottom of the crystallization and softening equipment.

[0046] The metering barrel of the particle emission detection device is installed on the weighing assembly, and the weighing assembly can weigh the total weight of the metering barrel and its contents. The weighing assembly can use a common metering sensor to detect the weight of the metering barrel and its contents. When in use, the particle detection port of the crystallization softening device guides the discharged liquid to the metering barrel through a pipeline, and when the liquid in the metering barrel is full, an overflow is formed at the overflow port. When only liquid is discharged from the particle discharge port of the particle emission detection device, the weight of the metering barrel itself remains unchanged, the volume of the liquid inside the metering barrel is fixed, and thus the weight is also fixed, so the total weight detected by the weighing assembly remains unchanged. When the liquid discharged from the particle discharge port of the particle emission detection device contains particles, the weight of the metering barrel itself remains unchanged; however, since the high-density particles gradually accumulated inside the metering barrel replace the original low-density liquid, the weight of the contents of the metering barrel increases, so the total weight detected by the weighing assembly increases, based on which it can be judged that the liquid flow discharged from the detection tube carries crystal particles, and the crystallization softening device needs to discharge particles. In practice, after the weighing component detects the increase in weight of the receiving container and its contents, it can directly notify the operator through a dial, indicator light, buzzer, etc., or send an electrical signal to other devices. More specifically, the top of the collection hopper of the particle collection device is open, and the detection port of the particle collection device is connected to a pipe extending above the collection hopper to guide the discharged liquid flow to the collection hopper. When the detection port of the particle collection device discharges liquid into the collection hopper, although there will be a certain impact force, since the impact force is basically constant, it will not affect the detection of the increase in weight of the receiving container and its contents by the weighing component.

[0047] The collection bucket of the particle collection device is used to collect the liquid and particles discharged from the crystallization softening equipment and the particle emission detection device for unified treatment. The particle collection device uses a spiral lifting component to lift the particles deposited at the bottom of the collection bucket, and uses the characteristic that the spiral shaft of the spiral lifting component cannot lift the liquid to separate the particles from the liquid. The grinding machine uniformly crushes the particles collected by the particle collection device, and then uses the screening device to screen out the desulfurization crushed particles that can be used for desulfurization and the seed crushed particles that can be mixed into the seed crystal.

[0048] See also Figure 1 As a specific implementation of the automatic seed circulation system of the crystallization and softening equipment provided in the present application, the desulfurization crushed particle outlet of the screening device is transported to the desulfurization tower through a pipeline.

[0049] In this embodiment, the desulfurized crushed particles screened by the screening device are directly sent to the desulfurization tower by pipeline, which makes transportation more convenient and reduces transportation costs. Specifically, hydraulic or pneumatic transportation can be used in the pipeline, or the particles can be lifted and then transported by gravity through an inclined pipeline.

[0050] See also Figure 1 As a specific embodiment of the automatic seed circulation system of the crystallization and softening equipment provided in the present application, the seed crushing particle outlet of the screening device is transported to the seed adding device of the crystallization and softening equipment through a pipeline.

[0051] In this embodiment, the desulfurized crushed particles screened by the screening device are directly sent to the seed adding device of the crystallization and softening equipment by using a pipeline, which makes transportation more convenient and reduces transportation costs. Specifically, hydraulic or pneumatic transportation can be used in the pipeline, or the particles can be lifted and then transported by gravity using an inclined pipeline. The seed adding device is a device for quantitatively adding seeds to the crystallization and softening equipment. The specific structure can be to quantitatively transport the seeds to the crystallization and softening equipment through a spiral conveying structure.

[0052] See also Figure 1 As a specific implementation of the crystal seed automatic circulation system of the crystallization and softening equipment provided in the present application, the desulfurization crushing particles are 300 meshes, and the crystal seed crushing particles are 40-60 meshes.

[0053] See also Figure 1 As a specific embodiment of the crystal seed automatic circulation system of the crystallization and softening equipment provided in the present application, the screening device is a multi-layer screening structure, including the coarse screen structure, the medium screen structure and the fine screen structure from top to bottom; the screen of the coarse screen structure is 40 mesh, the screen of the medium screen structure is 60 mesh, and the screen of the fine screen structure is 300 mesh; the material on the medium screen structure is crystal seed crushed particles, and the material on the fine screen structure is desulfurization crushed particles.

[0054] In this embodiment, a multi-layer screening device available on the market can be used to control the particle size of particles used for desulfurization and the particle size of particles used for adding seed crystals by setting the mesh density of different layers of screens.

[0055] See also Figure 2 As a specific embodiment of the automatic seed circulation system of the crystallization and softening equipment provided in the present application, the bottom of the collecting hopper is contracted to form a long strip opening, and the long strip opening is inclined with one end high and the other end low;

[0056] The spiral lifting assembly comprises:

[0057] A first spiral conveying unit is arranged obliquely along the long strip opening, is communicated with the long strip opening, and conveys toward the high end;

[0058] The second spiral conveying unit is arranged to be inclined with a slope greater than that of the first spiral conveying unit; the lower end of the second spiral conveying unit is communicated with the high end of the first spiral conveying unit.

[0059] In this embodiment, the particles collected by the collecting bucket are concentrated at the long strip opening and enter the first spiral conveying unit. The spiral lifting assembly uses two spiral conveying units; the first spiral conveying unit is set along the long strip opening to cover the long strip opening as much as possible and better collect the particles in the collecting bucket; and the inclination angle of the second spiral conveying unit can be set larger, which is more convenient for lifting the particles and can also make the liquid flow back to the collecting bucket faster.

[0060] In a specific implementation, the collecting bucket is rectangular, with an open top and two sides of the bottom narrowing toward the middle to form a long opening.

[0061] See also Figure 2 As a specific implementation of the automatic seed circulation system of the crystallization and softening equipment provided in the present application, a drain port is provided at the lower end of the bottom of the collecting bucket.

[0062] In this embodiment, when there is too much liquid in the collecting bucket, the liquid in the collecting bucket can be discharged through the liquid discharge port.

[0063] See also Figure 1 As a specific implementation of the automatic seed circulation system of the crystallization and softening equipment provided in the present application, the grinding mill is a ball mill.

[0064] In this embodiment, a ball mill is used to crush the particles. The particle size range of the particles after grinding is relatively large and covers the particle size used for desulfurization and the particle size used for adding seed crystals. The desired crushed particles can be screened out as needed.

[0065] See also Figure 3 As a specific implementation of the automatic seed circulation system of the crystallization and softening equipment provided in the present application, a discharge valve is also provided at the bottom of the metering barrel, and the discharge valve is connected to the collection bucket.

[0066] In this embodiment, the particles in the metering barrel can be discharged into the collection bucket through the discharge valve to empty the metering barrel. In a specific implementation, the metering barrel is located directly above the collection bucket, so that the discharge valve at the bottom of the metering barrel can be opened to directly discharge the particles and liquid into the collection bucket. The particle collection device is used to collect particles discharged from the particle discharge port of the crystallization and softening equipment, overflow liquid discharged from the overflow port of the metering barrel, and accumulated particles discharged from the discharge valve of the metering barrel, and the particles and liquid discharged from each part are uniformly processed, simplifying the processing flow and avoiding particle waste.

[0067] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The crystal seed automatic circulation system of the crystallization and softening equipment is characterized by: include: A crystallization and softening device having a particle detection port and a particle discharge port; The particle discharge detection device comprises a metering barrel and a weighing assembly; the metering barrel is provided with an overflow port, and receives the liquid flow discharged from the particle detection port to form an overflow at the overflow port; the weighing assembly detects the weight increase of the receiving container and its contents, and is used to determine that the crystallization and softening equipment needs to discharge particles; The particle collecting device comprises a collecting bucket and a spiral lifting assembly; the particle discharge port and the overflow port are connected to the collecting bucket; the lower end of the spiral lifting assembly is connected to the bottom of the collecting bucket and is lifted upward; A grinding mill is suitable for crushing crystalline particles; the high end of the spiral lifting assembly is connected to the grinding mill; The screening device is connected to the discharge port of the grinding mill and is suitable for screening the powder ground by the grinding mill into desulfurization crushed particles and seed crushed particles.

2. The automatic seed circulation system for the crystallization and softening equipment according to claim 1, characterized in that: The desulfurized crushed particles outlet of the screening device are transported to the desulfurization tower through a pipeline.

3. The automatic seed circulation system for the crystallization and softening equipment according to claim 1, characterized in that: The crystal seed crushing particle outlet of the screening device is transported to the crystal seed adding device of the crystallization and softening equipment through a pipeline.

4. The automatic seed circulation system for the crystallization and softening equipment according to claim 1, characterized in that: The desulfurization crushed particles are 300 meshes, and the seed crushed particles are 40-60 meshes.

5. The automatic seed circulation system for the crystallization and softening equipment according to claim 4, characterized in that: The screening device is a multi-layer screening structure, including a coarse screen structure, a medium screen structure and a fine screen structure from top to bottom; the screen of the coarse screen structure is 40 mesh, the screen of the medium screen structure is 60 mesh, and the screen of the fine screen structure is 300 mesh; the material on the medium screen structure is seed crushed particles, and the material on the fine screen structure is desulfurization crushed particles.

6. The automatic seed circulation system for the crystallization and softening equipment according to claim 1, characterized in that: The bottom of the collecting hopper is contracted to form a long strip opening, and the long strip opening is tilted with one end high and the other end low; The spiral lifting assembly comprises: A first spiral conveying unit is arranged obliquely along the long strip opening, is communicated with the long strip opening, and conveys toward the high end; The second spiral conveying unit is arranged to be inclined with a slope greater than that of the first spiral conveying unit; the lower end of the second spiral conveying unit is communicated with the high end of the first spiral conveying unit.

7. The automatic seed circulation system for the crystallization and softening equipment according to claim 6, characterized in that: A liquid discharge port is arranged at the lower end of the bottom of the collecting bucket.

8. The automatic seed circulation system for crystallization and softening equipment according to claim 1, characterized in that: The grinding mill is a ball mill.

9. The automatic seed circulation system for crystallization and softening equipment according to claim 1, characterized in that: A discharge valve is also provided at the bottom of the metering barrel, and the discharge valve is communicated with the collecting bucket.

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