Device for improving filtering efficiency of sulfate with fine particle size

Abstract

The utility model discloses a device for improving filtering efficiency of fine-particle-size sulfate, which relates to the technical field of sulfate filtering, is arranged between a material conveying pump and a centrifugal machine and comprises a feeding body, a cone is arranged at the bottom of the feeding body, a settling body is arranged at the bottom of the cone and connected with the centrifugal machine, and the feeding body, the cone and the settling body form a rotating cavity. The top of the feeding body is provided with an overflow pipe, one side of the feeding body is provided with a liquid inlet pipe, the liquid inlet pipe is connected with a material conveying pump, and the overflow pipe and the liquid inlet pipe are both communicated with the rotating cavity; the device for improving the filtering efficiency of the fine-particle-size sulfate is arranged between the material conveying pump and the centrifugal machine, and the ratio of solids flowing into the centrifugal machine can be increased under the condition of reducing the occupied area and investment cost of newly-added equipment, so that the influence of flowing liquid on potassium sulfate in the filtering process is reduced, and the filtering efficiency of the potassium sulfate is improved. The filtering efficiency of the fine-particle-size sulfate is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfate filtration, in particular to a device for improving the filtration efficiency of fine-particle sulfate. Background Art

[0002] Evaporation and precipitation are common process steps in the production of potassium and sodium sulfate mixed salts. However, due to the fine particle size of the precipitated potassium sulfate, it is easily carried away by the flowing liquid during filtration, resulting in low filtration efficiency and unstable quality of the separated solid product. The fine particles that escape through the precipitate are difficult to effectively collect, increasing the complexity and cost of subsequent processing.

[0003] To improve this situation, the industry typically installs thickeners and concentrators to enhance solid-liquid separation. While these methods can improve filtration performance to a certain extent, they all have drawbacks such as large floor space requirements, high investment costs, and complex operation and maintenance, hindering the economic benefits and sustainable development of enterprises. Utility Model Content

[0004] The purpose of the utility model is to provide a device for improving the filtration efficiency of fine-particle sulfate. The device for improving the filtration efficiency of fine-particle sulfate is arranged between a material conveying pump and a centrifuge. It can increase the proportion of solids flowing into the centrifuge while reducing the floor space and investment cost of new equipment, thereby reducing the influence of the flowing liquid on potassium sulfate during the filtration process, and thus improving the filtration efficiency of fine-particle sulfate.

[0005] The above-mentioned optimized structure of the present utility model is achieved through the following technical solutions: a device for improving the filtration efficiency of fine-particle sulfate, which is arranged between a material conveying pump and a centrifuge, and includes a feed body, a cone is provided at the bottom of the feed body, a sedimentation body is provided at the bottom of the cone, and the sedimentation body is connected to the centrifuge. The feed body, the cone, and the sedimentation body form a rotating chamber, an overflow pipe is provided at the top of the feed body, and a liquid inlet pipe is provided on one side of the feed body, and the liquid inlet pipe is connected to the material conveying pump. The overflow pipe and the liquid inlet pipe are both communicated with the rotating chamber.

[0006] In some embodiments, a diverter is provided in the rotating chamber, and the diverter is provided below the overflow pipe;

[0007] The diverter element includes a diverter ring, which is coaxially arranged with the liquid inlet pipe. At least three connecting rods are connected between the diverter ring and the liquid inlet pipe. The three connecting rods are distributed in a ring shape. A filter is provided in the diverter ring.

[0008] In some embodiments, the liquid inlet direction of the liquid inlet pipe is tangent to the inner wall of the feed body.

[0009] In some embodiments, the liquid inlet pipe includes a coaxially connected liquid inlet portion and a liquid outlet portion, the liquid inlet portion is connected to the material conveying pump, the liquid outlet portion is connected to the rotating chamber, and the cross-section of the liquid outlet portion is square.

[0010] In some embodiments, the bottom of the overflow pipe is lower in the rotating chamber than the bottom of the liquid outlet.

[0011] In some embodiments, a transition piece is provided between the feed body and the cone, the transition piece includes a fixing ring, the cone is inserted into the fixing ring, a limiting groove is provided on a side of the fixing ring close to the feed body, and the limiting groove is threadedly engaged with the feed body;

[0012] A limiting ring is provided on the top of the cone, and the limiting ring is arranged between the inner wall of the limiting groove and the bottom of the feed body.

[0013] In some embodiments, a sealing ring is provided between the feed body and the top of the cone.

[0014] In some embodiments, a positioning boss is provided on the top of the cone, and a positioning groove is provided on the bottom of the feed body, and the positioning boss is plugged into and fits with the positioning groove.

[0015] In summary, the present invention has the following beneficial effects:

[0016] The utility model is arranged between the material conveying pump and the centrifuge, and by arranging structures such as a feed body, a cone, a sedimentation body, an overflow pipe, and a liquid inlet pipe, a strong rotating flow field is formed in the mixed liquid entering the rotating chamber. Under the action of the rotating flow field, the particles in the mixed liquid are subjected to the centrifugal force and separated from the liquid, thereby realizing the preliminary solid-liquid separation of the mixed liquid before entering the centrifuge, increasing the proportion of solids in the liquid entering the centrifuge, thereby reducing the influence of the flowing liquid on the solids, reducing the leakage of fine particles, improving the filtration efficiency, making the separated solid product purer, and ensuring the quality of the product; at the same time, the overall structure of the device is compact and reasonable, the floor space is small, the investment cost is low, and it is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 For this utility model Figure 2 Cross-sectional view along the AA axis;

[0020] Figure 4 For this utility model Figure 2 Cross-sectional view along the BB direction;

[0021] Figure 5 For this utility model Figure 3 Enlarged view of point C in the middle.

[0022] In the figure: 1, feed body; 11, positioning groove; 2, cone; 21, limiting ring; 22, positioning boss; 3, sedimentation body; 4, rotating chamber; 5, overflow pipe; 6, liquid inlet pipe; 61, liquid inlet; 62, liquid outlet; 7, diverter; 71, diverter ring; 72, connecting rod; 73, filter screen; 8, adapter; 81, fixing ring; 82, limiting groove; DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1:

[0025] refer to Figure 1-5 , a device for improving the filtration efficiency of fine-particle sulfate, is arranged between the material conveying pump and the centrifuge, including a feed body 1, a cone 2, a sedimentation body 3, an overflow pipe 5, a liquid inlet pipe 6 and a diverter 7. The bottom of the feed body 1 is provided with a cone 2, which can be a hollow frustum. The bottom of the cone 2 is provided with a sedimentation body 3, which can be a hollow cylinder. The bottom of the sedimentation body 3 is provided with a drop port, which is connected to the centrifuge. The connection method is a prior art and will not be repeated here. The material settled in the sedimentation body 3 can be transported to the centrifuge. The feed body 1, the cone 2, and the sedimentation body 3 form a rotating chamber 4. The top of the feed body 1 is provided with an overflow pipe 5. The feed body 1 is provided with a drop port. A liquid inlet pipe 6 is provided on the side, and the overflow pipe 5 and the liquid inlet pipe 6 are both connected to the rotating chamber 4. The liquid inlet pipe 6 includes a coaxially connected liquid inlet portion 61 and a liquid outlet portion 62. The liquid inlet portion 61 is connected to the material conveying pump. This connection method is a prior art and will not be repeated here. It ensures that the material enters the feed body 1 at a suitable flow rate. The liquid outlet portion 62 is connected to the rotating chamber 4. The liquid outlet direction of the liquid outlet portion 62 is tangent to the inner wall of the feed body 1, so that the liquid entering the feed body 1 forms a rotating flow field. The cross-section of the liquid outlet portion 62 is square, which can enhance the tangential velocity and rotation intensity of the fluid, thereby improving the centrifugal sedimentation effect of the particles, and thereby improving the filtration efficiency of fine-particle sulfate.

[0026] When the material delivery pump delivers the mixed liquid containing fine-particle sulfate into the liquid inlet pipe 6, the mixed liquid enters the rotating chamber 4 tangentially at a certain speed through the liquid outlet 62, forming a strong rotating flow field. Under the action of the rotating flow field, the particles in the mixed liquid are subjected to the centrifugal force. The particles with higher density are thrown to the peripheral wall of the rotating chamber 4 and settle downward along the cone 2, eventually entering the sedimentation body 3 and flowing out from the bottom droplet of the sedimentation body 3. The clear liquid with lower density moves upward with the internal vortex and flows to the recovery device through the overflow pipe 5, thereby achieving preliminary solid-liquid separation, increasing the proportion of solids in the liquid entering the centrifuge, thereby reducing the impact of the flowing liquid on the solids, reducing the leakage of fine particles, making the separated solid product purer, and ensuring product quality.

[0027] In some embodiments, the bottom of the overflow pipe 5 is lower than the bottom of the liquid outlet 62 in the rotating chamber 4, so that the flow path of the material entering the feed body 1 does not interfere with the flow path of the internal vortex, thereby avoiding mutual influence.

[0028] In some embodiments, a adapter 8 is provided between the feed body 1 and the cone 2, and the adapter 8 includes a fixing ring 81, and the cone 2 is inserted into the fixing ring 81. A limiting groove 82 is provided on the side of the fixing ring 81 close to the feed body 1, and the limiting groove 82 is screwed with the feed body 1; a limiting ring 21 is provided on the top of the cone 2, and the limiting ring 21 is arranged between the inner wall of the limiting groove 82 and the bottom of the feed body 1; the cone 2 is passed through the fixing ring 81, so that the limiting ring 21 is placed in the limiting groove 82, and the feed body 1 is connected to the limiting groove 82 and tightened so that the bottom of the feed body 1 squeezes the top of the cone 2, thereby realizing the connection between the feed body 1 and the cone 2. This connection method can realize a detachable connection between the feed body 1 and the cone 2, which is convenient for later maintenance.

[0029] In some embodiments, a sealing ring is provided between the feed body 1 and the top of the cone 2 to ensure sealing between the feed body 1 and the cone 2 .

[0030] In some embodiments, a positioning boss 22 is provided on the top of the cone 2, and a positioning groove 11 is provided on the bottom of the feed body 1. The positioning boss 22 is plugged into the positioning groove 11 to ensure precise positioning between the cone 2 and the feed body 1.

[0031] The specific working principle is as follows:

[0032] When the material delivery pump delivers a mixed liquid containing fine-particle sulfate into the liquid inlet pipe 6, the mixed liquid flows tangentially through the liquid outlet 62 at a constant speed into the rotating chamber 4, creating a strong rotating flow field. Under the influence of this rotating flow field, the particles in the mixed liquid are subjected to centrifugal force. The denser particles are flung toward the walls of the rotating chamber 4 and settle downward along the cone 2, ultimately entering the sedimentation chamber 3 for further processing. The smaller, less dense particles, however, move upward with the internal vortex and are discharged through the overflow pipe 5, achieving preliminary solid-liquid separation of the mixed liquid.

[0033] Example 2:

[0034] refer to Figure 2 The difference between this embodiment and embodiment 1 lies in the internal structure of the rotating chamber 4.

[0035] Specifically, a diverter member 7 is provided in the rotating chamber 4, and the diverter member 7 includes a diverter ring 71, a connecting rod 72 and a filter screen 73. The diverter ring 71 is coaxially arranged with the liquid inlet pipe 6 and is arranged below the overflow pipe 5. At least three connecting rods 72 are connected between the diverter ring 71 and the liquid inlet pipe 6. The three connecting rods 72 are distributed in a ring shape, and a filter screen 73 is provided in the diverter ring 71; the position of the diverter ring 71 in the rotating chamber 4, the size of the diverter ring 71, and the filtering size of the filter screen 73 can be adjusted according to actual conditions.

[0036] When the material forms a rotating flow field in the rotating chamber 4, the particles in the mixed liquid are acted upon by centrifugal force, and the particles with higher density are thrown toward the peripheral wall of the rotating chamber 4 and settle downward along the cone 2, eventually entering the sedimentation body 3 and flowing out from the drop-out port at the bottom of the sedimentation body 3; and the particles on the same cross-section are distributed in the order of increasing mass (volume) from the center of the circle to the outside, so the diverter ring 71 can intercept some fine particles on the diverter ring 71, while the clear liquid with lower density moves upward with the internal vortex and flows to the recovery device through the overflow pipe 5. When the internal vortex passes through the filter screen 73, it drives the fine particles falling on the diverter ring 71 and the fine particles above the filter screen 73 to move upward and flow through the overflow pipe 5 to the recovery device, thereby realizing the recovery of fine particles; thereby realizing the screening of large and small particles, further reducing the influence of the flowing liquid on the material entering the centrifuge, reducing the leakage of fine particles, and improving the filtration efficiency of fine-particle sulfate.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for improving the filtration efficiency of fine-particle sulfate, located between a material delivery pump and a centrifuge, characterized in that: The centrifuge comprises a feed body (1), a cone (2) is provided at the bottom of the feed body (1), a sedimentation body (3) is provided at the bottom of the cone (2), the sedimentation body (3) is connected to the centrifuge, the feed body (1), the cone (2), and the sedimentation body (3) form a rotating chamber (4), an overflow pipe (5) is provided at the top of the feed body (1), a liquid inlet pipe (6) is provided on one side of the feed body (1), the liquid inlet pipe (6) is connected to the material conveying pump, and the overflow pipe (5) and the liquid inlet pipe (6) are both in communication with the rotating chamber (4).

2. The device for improving the filtration efficiency of fine-particle sulfate according to claim 1, characterized in that: A flow diverter (7) is provided in the rotating chamber (4), and the flow diverter (7) is provided below the overflow pipe (5); The diverter member (7) comprises a diverter ring (71), the diverter ring (71) and the liquid inlet pipe (6) are coaxially arranged, at least three connecting rods (72) are connected between the diverter ring (71) and the liquid inlet pipe (6), the three connecting rods (72) are distributed in a ring shape, and a filter screen (73) is provided in the diverter ring (71).

3. The device for improving the filtration efficiency of fine-particle sulfate according to claim 1, characterized in that: The liquid inlet direction of the liquid inlet pipe (6) is tangent to the inner wall of the feed body (1).

4. The device for improving the filtration efficiency of fine-particle sulfate according to claim 1, characterized in that: The liquid inlet pipe (6) comprises a coaxially connected liquid inlet portion (61) and a liquid outlet portion (62), wherein the liquid inlet portion (61) is connected to the material delivery pump, and the liquid outlet portion (62) is connected to the rotating chamber (4), and the cross section of the liquid outlet portion (62) is square.

5. The device for improving the filtration efficiency of fine-particle sulfate according to claim 4, characterized in that: The bottom of the overflow pipe (5) is located at a lower height in the rotating chamber (4) than the bottom of the liquid outlet portion (62).

6. The device for improving the filtration efficiency of fine-particle sulfate according to claim 1, characterized in that: An adapter (8) is provided between the feed body (1) and the cone (2), the adapter (8) comprising a fixing ring (81), the cone (2) being inserted into the fixing ring (81), a limiting groove (82) being provided on a side of the fixing ring (81) close to the feed body (1), the limiting groove (82) being threadedly engaged with the feed body (1); A limiting ring (21) is provided on the top of the cone (2), and the limiting ring (21) is provided between the inner wall of the limiting groove (82) and the bottom of the feed body (1).

7. The device for improving the filtration efficiency of fine-particle sulfate according to claim 1, characterized in that: A sealing ring is provided between the feed body (1) and the top of the cone (2).

8. The device for improving the filtration efficiency of fine-particle sulfate according to claim 1, characterized in that: A positioning boss (22) is provided on the top of the cone (2), and a positioning groove (11) is provided on the bottom of the feed body (1), and the positioning boss (22) is plug-fitted into the positioning groove (11).

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