Rotating shaft spraying type dynamic dosing device

Abstract

The utility model discloses a rotating shaft spraying type dynamic dosing device, and belongs to the field of dosing of stirrers. According to the device disclosed by the utility model, the driving motor, the chemical adding device and the rotating shaft are matched with one another, chemicals are placed in the hollow section of the rotating shaft, and then the chemicals are uniformly sprayed into the stirring tank through the chemical spraying holes of the rotating shaft under the dual effects of pressure in the chemical adding device and centrifugal force provided for the rotating shaft by the driving motor; the medicament and the master batch in the stirring tank can be uniformly mixed, so that the technical problem of non-uniform mixing of the medicament and the material in the conventional stirrer dosing device is solved.

Description

Technical Field

[0001] The utility model belongs to the field of agitator dosing, and relates to a rotary shaft spraying type dynamic dosing device. Background Art

[0002] As a reactor with relatively mature application technology, the viscous material agitator has been widely used in the chemical, pharmaceutical and food industries. The dosing device is an important component in the viscous material agitator, and its structural form and layout have a very important impact on the material mixing uniformity and reaction efficiency of the agitator. Therefore, determining the type and layout of the dosing device is very crucial for the design of the viscous material agitator, which directly affects the yield and purity of the finished product.

[0003] The existing technology's research on the agitator dosing device is limited to separately setting a fixed dosing component for feeding. Due to the poor fluidity of the viscous material, this type of dosing method will cause a large amount of local aggregation and accumulation of the reagent, and the mixing efficiency of the reagent and the material is extremely low. In the area close to the input reagent, the reagent and the material react excessively, and in the area far from the input reagent, the reaction is insufficient. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rotary shaft spraying type dynamic dosing device, which is used to solve the technical problem of uneven mixing of the reagent and the material existing in the existing agitator dosing device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a rotary shaft spraying type dynamic dosing device, which includes a mixing tank, a driving motor, a rotating shaft, a dosing device, a feeding device and a discharging device;

[0007] The rotating shaft is arranged inside the mixing tank, and one end of the rotating shaft is connected with the driving motor arranged outside the bottom end of the mixing tank; the other end of the rotating shaft is arranged as a hollow structure and is in clearance fit with one end of the dosing device; the dosing device is fixed on the top cover of the top end of the mixing tank; a stirring device is arranged on the surface of the rotating shaft.

[0008] The top end of the mixing tank is connected with the feeding device, and the bottom end is connected with the discharging device; a plurality of medicine spraying holes are arranged on the surface of one end of the rotating shaft with the hollow structure.

[0009] Furthermore, the dosing device includes a dosing pump, a reagent storage tank, a medicine spraying rod and a medicine inlet pipe; after the dosing pump and the reagent storage tank are connected, they are fixed on the top cover of the mixing tank; one end of the medicine inlet pipe is connected with the dosing pump, and the other end is connected with one end of the medicine spraying rod; the other end of the medicine spraying rod is in clearance fit with the hollow structure at the other end of the rotating shaft; the medicine spraying rod is fixed in the top cover of the mixing tank.

[0010] Further, a liquid retaining ring is provided at the lower end of the medicine spraying hole; a medicine spraying rod gasket is provided at the connection between the medicine spraying rod and the top cover of the stirring tank.

[0011] Further, the feeding device is a feeding pipe; one end of the feeding pipe passes through the top cover of the stirring tank and is arranged inside the stirring tank.

[0012] Further, the discharging device includes a discharging pipe and a discharging pump; one end of the discharging pipe is communicated with the bottom of the stirring tank, and the other end is connected with the discharging pump.

[0013] Further, the position of the hollow structure provided at the other end of the rotating shaft is one-third of the shaft section of the rotating shaft away from the top cover of the stirring tank.

[0014] Further, a liquid level observation window is provided on the side wall of the stirring tank; high, medium and low liquid levels are sequentially provided on the liquid level observation window from the top to the bottom of the stirring tank.

[0015] Further, the stirring device is a first-stage paddle and a second-stage paddle; the first-stage paddle is located below the hollow structure of the rotating shaft and above the second-stage paddle; the second-stage paddle is close to the bottom end of the stirring tank.

[0016] Further, the medicine spraying hole forms an angle of 30° with the axis of the rotating shaft.

[0017] Further, the other end of the rotating shaft is assembled with the top cover of the stirring tank through a bearing device and a sealing device; the bearing device includes a bearing and a bearing bushing; the sealing device is a bushing gasket and a bushing seal ring; the other end of the rotating shaft is assembled with the top cover of the stirring tank through a bearing and a bearing bushing on the bearing;

[0018] One end of the rotating shaft is also assembled with the bottom end of the stirring tank through a bearing device and a sealing device;

[0019] The bearing device includes a bearing and a bearing bushing; the sealing device is a bushing gasket and a bushing seal ring; one end of the rotating shaft is assembled with the bottom end of the stirring tank through a bearing and a bearing bushing on the bearing;

[0020] The gasket and the bushing seal ring are used to achieve the seal between the bearing device and the stirring tank.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model discloses a rotary shaft spraying type dynamic chemical adding device, which adopts the mutual cooperation of a driving motor, a chemical adding device and a rotating shaft. The chemical agent is placed in the hollow section of the rotating shaft, and then under the dual action of the pressure in the chemical adding device and the centrifugal force provided by the driving motor to the rotating shaft, the chemical agent is evenly sprayed into the mixing tank through the spraying holes of the rotating shaft. The chemical agent and the master batch in the mixing tank can be evenly mixed, solving the technical problem that the existing chemical adding device of the stirrer has uneven mixing of the chemical agent and the material.

[0023] Further, after all the chemical agents are sprayed, the feeding device is closed, and the mixed material of the chemical agent and the master batch is properly stirred and then discharged through the discharging device. The provided stirring device adopts two-stage paddle blades, which can assist the discharge pipe to reduce the residue of the mixed material in the mixing tank.

[0024] Further, a liquid level observation window is arranged on the side wall of the mixing tank, which can control the feeding height of the material, prevent excessive feeding from submerging the spraying holes of the rotating shaft, or prevent insufficient feeding from causing the first-stage paddle blades to rotate idly and unable to participate in the complete stirring of the submerged material.

[0025] Further, a liquid retaining ring is arranged at the lower end of the spraying hole, which can prevent the material stirred and agitated from covering the spraying hole and hindering the normal chemical adding of the spraying hole.

[0026] Further, the sealing devices between the upper end of the rotating shaft and the top cover of the mixing tank and between the lower end of the rotating shaft and the mixing tank can prevent the leakage of the chemical agent and ensure the cleanliness of the transmission device. Description of the Drawings

[0027] Figure 1 is the overall structural schematic diagram of the rotary shaft spraying type dynamic chemical adding device of the present utility model;

[0028] Figure 2 is the detailed schematic diagram of the chemical adding device of the present utility model;

[0029] Wherein: 1 - mixing tank; 2 - driving motor; 3 - rotating shaft; 4 - first-stage paddle blade; 5 - second-stage paddle blade; 6 - liquid level observation window; 7 - chemical adding pump; 8 - chemical agent storage tank; 9 - discharging pump; 10 - chemical adding device; 11 - feeding pipe; 12 - liquid retaining ring; 13 - spraying hole; 14 - spraying rod; 15 - bearing bushing; 16 - bushing sealing gasket; 17 - bushing sealing ring; 18 - bearing; 19 - spraying rod sealing gasket; 20 - chemical agent inlet pipe; 21 - discharging pipe. Specific Embodiments

[0030] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0032] The present utility model discloses a rotating shaft jet type dynamic dosing device, which includes a stirring tank 1, a driving motor 2 arranged at the lower end of the stirring tank 1, a rotating shaft 3 arranged in the stirring tank 1, and a dosing device 10 fixed on the top cover of the top end of the stirring tank 1; the rotating shaft 3 is arranged inside the stirring tank 1, and one end of the rotating shaft 3 is connected to the driving motor 2 arranged outside the bottom end of the stirring tank 1; the other end of the rotating shaft 3 is arranged as a hollow structure and is in clearance fit with one end of the dosing device 10; a stirring device is arranged on the surface of the rotating shaft 3; meanwhile, the top end of the stirring tank 1 is connected to a feeding device for adding viscous materials into the stirring tank 1, and the bottom end is connected to a discharging device for discharging the mixed materials of the medicament and the viscous materials; a plurality of medicine spraying holes 13 are arranged on the surface of one end of the hollow-structured rotating shaft 3 for spraying the medicament in the dosing device into the stirring tank 1.

[0033] Preferably, the above-mentioned dosing device 10 includes a medicine inlet pipe 20 arranged on the top cover of the stirring tank 1, a dosing pump 7 connected to the medicine inlet pipe 20, a medicine storage tank 8 arranged behind the dosing pump 7, and a medicine spraying rod 14 arranged at the upper end of the rotating shaft 3; the medicine spraying rod 14 is fixed between the hollow structure of the rotating shaft 3 and the top cover of the stirring tank 1 and is in clearance fit.

[0034] Preferably, the upper one-third shaft section of the rotating shaft 3 is a hollow structure.

[0035] Preferably, a liquid level observation window 6 is arranged on the side wall of the stirring tank 1, and the liquid level observation window 6 is provided with three levels of liquid levels: high, medium, and low.

[0036] Preferably, the feeding device is a feed pipe 11, one end of the feed pipe 11 passes through the top cover of the stirring tank 1 and is arranged inside the stirring tank 1; the discharging device includes a discharge pipe 21 and a discharge pump 9; one end of the discharge pipe 21 is communicated with the bottom of the stirring tank 1, and the other end is connected to the discharge pump 9.

[0037] Preferably, the stirring device arranged on the surface of the rotating shaft 3 is a primary paddle 4 and a secondary paddle 5. Both the primary paddle 4 and the secondary paddle 5 are mixed-flow paddles, and the number of blades is 3.

[0038] Preferably, the chemical dosing pump 7 is a diaphragm metering pump, and the discharge pump 9 is a positive displacement pump.

[0039] Preferably, a bearing device and a sealing device are arranged at the assembly position of the rotating shaft 3 and the upper end of the stirring tank 1; a bearing device and a sealing device are also arranged at the lower end of the rotating shaft 3 and the stirring tank 1; the bearing device includes a bearing 18 and a bearing bushing 15; the sealing device is a bushing gasket 16 and a bushing seal ring 17; the other end of the rotating shaft 3 is assembled with the top cover of the stirring tank 1 through the bearing 18 and the bearing bushing 15 on the bearing 18; the bearing device includes a bearing 18 and a bearing bushing 15; the sealing device is a bushing gasket 16 and a bushing seal ring 17; one end of the rotating shaft 3 is assembled with the bottom end of the stirring tank 1 through the bearing 18 and the bearing bushing 15 on the bearing 18;

[0040] The gasket 16 and the bushing seal ring 17 are used to realize the seal between the bearing device and the stirring tank 1.

[0041] Preferably, a spray rod gasket 19 is arranged at the connection between the spray rod 14 and the top cover of the stirring tank 1.

[0042] Such as Figure 1 And Figure 2As shown in the figure, a rotary shaft spraying type dynamic chemical dosing device disclosed by the utility model includes: a stirring tank 1, a driving motor 2, a rotating shaft 3, a first-stage paddle 4, a second-stage paddle 5, a liquid level observation window 6, a chemical dosing pump 7, a chemical agent storage tank 8, a discharging pump 9, a chemical dosing device 10, a feed pipe 11 and a discharge pipe 21; the stirring tank 1 has a stirring chamber, the driving motor 2 is arranged at the lower end of the stirring tank 1, the bottom end of the rotating shaft 3 is fixedly connected with the output end of the driving motor 2, and the top end is nested and connected with a spraying rod 14 fixed on the top cover of the stirring tank 1. The nested section of the rotating shaft 3 is a hollow shaft section, and six uniformly distributed spraying holes 13 with an angle of 30° to the axis are arranged. Sealing devices are arranged at both the top end and the bottom end of the rotating shaft 3 and the stirring tank 1; the first-stage paddle 4 is arranged at the 1 / 2 position of the rotating shaft 3, and the blade type is designed as a mixed-flow blade with better mixing effect. The second-stage paddle 5 is arranged at the bottom end of the rotating shaft 3, and the blade type is designed as a mixed-flow blade with the lower edge line parallel to the bottom surface of the stirring tank 1. The number of blades of both stages is 3, and the starting angles of the arrangements are the same; the liquid level observation window 6 is arranged at 2 / 3 of the distance from the bottom of the stirring tank 1, and is marked with high, medium and low liquid level lines; the medicine inlet pipe 20 of the chemical dosing pump 7 is connected to the spraying rod 14, and the medicine inlet pipe 20 is connected to the chemical agent storage tank 8; the discharging pump 9 is connected to the discharge pipe 21 at the bottom of the stirring tank 1, and the discharge port is connected to a finished product storage tank or a reactor in the next process.

[0043] The working principle of the utility model is as follows: after the viscous material in the stirring tank 1 is added, start the driving motor 2 to stir the master batch through the stirring device on the rotating shaft 3, start the chemical dosing pump 7, and press the chemical agent into the spraying rod 14 according to the dosage of the chemical agent. The chemical agent enters the hollow section of the rotating shaft 3 along the spraying rod 14. Under the dual action of the pressure of the chemical dosing pump 7 and the centrifugal force of the rotating shaft 3, the chemical agent is evenly sprayed onto the master batch in the stirring tank 1 through the spraying holes 13. The chemical agent and the master batch are evenly mixed. After all the chemical agent is sprayed, turn off the chemical dosing pump 7, appropriately stir the mixed material and then discharge it through the discharge pipe 21. The second-stage paddle 5 can assist the discharging pump 9 to discharge the material in time and reduce the residue of the mixed material in the stirring tank 1.

[0044] The utility model solves the problems that for viscous materials with poor fluidity, local aggregation and accumulation of chemical agents occur after the fixed chemical dosing device is used for chemical agent dosing, resulting in overreaction in some local areas of the material, insufficient reaction in some local areas, and low finished product yield and purity. It improves the operation cycle of the equipment and reduces the chemical agent and labor costs.

[0045] The above content is only to illustrate the technical idea of the utility model, and the protection scope of the utility model cannot be limited thereby. Any modification made on the basis of the technical solution according to the technical idea proposed by the utility model falls within the protection scope of the claims of the utility model.

Claims

1. A rotary shaft spray type dynamic dosing device, characterized in that, It includes a mixing tank (1), a driving motor (2), a rotating shaft (3), a chemical dosing device (10), a feeding device and a discharging device; The rotating shaft (3) is arranged inside the mixing tank (1), and one end of the rotating shaft (3) is connected to the driving motor (2) arranged outside the bottom end of the mixing tank (1); the other end of the rotating shaft (3) is arranged as a hollow structure and is in clearance fit with one end of the chemical dosing device (10); the chemical dosing device (10) is fixed on the top cover of the top end of the mixing tank (1); a mixing device is arranged on the surface of the rotating shaft (3); The top end of the mixing tank (1) is connected to the feeding device, and the bottom end is connected to the discharging device; a plurality of medicine spraying holes (13) are arranged on the surface of one end of the rotating shaft (3) with the hollow structure.

2. The rotary shaft jet type dynamic chemical dosing device according to claim 1, wherein The chemical dosing device (10) includes a chemical dosing pump (7), a chemical agent storage tank (8), a medicine spraying rod (14) and a medicine inlet pipe (20); after the chemical dosing pump (7) and the chemical agent storage tank (8) are connected, they are fixed on the top cover of the mixing tank (1); one end of the medicine inlet pipe (20) is connected to the chemical dosing pump (7), and the other end is connected to one end of the medicine spraying rod (14); the other end of the medicine spraying rod (14) is in clearance fit with the hollow structure at the other end of the rotating shaft (3); the medicine spraying rod (14) is fixed in the top cover of the mixing tank (1).

3. The rotary shaft jet type dynamic chemical dosing device according to claim 2, characterized in that A liquid blocking ring (12) is arranged at the lower end of the medicine spraying hole (13); a medicine spraying rod gasket (19) is arranged at the connection part of the medicine spraying rod (14) and the top cover of the mixing tank (1).

4. The rotary shaft jet type dynamic dosing device according to claim 1, characterized in that, The feeding device is a feed pipe (11); one end of the feed pipe (11) passes through the top cover of the mixing tank (1) and is arranged inside the mixing tank (1).

5. A rotary shaft jet type dynamic chemical dosing device according to claim 1, characterized in that, The discharging device includes a discharge pipe (21) and a discharging pump (9); one end of the discharge pipe (21) is communicated with the bottom of the mixing tank (1), and the other end is connected to the discharging pump (9).

6. The rotary shaft jet type dynamic chemical dosing device according to claim 1, wherein The position where the hollow structure is arranged at the other end of the rotating shaft (3) is one-third of the shaft section of the rotating shaft (3) away from the top cover of the mixing tank (1).

7. A rotary shaft jet type dynamic dosing device according to claim 1, characterized in that, A liquid level observation window (6) is arranged on the side wall of the mixing tank (1); high, medium and low liquid levels are sequentially arranged on the liquid level observation window (6) from the top end to the bottom end of the mixing tank (1).

8. The rotating shaft jet type dynamic chemical dosing device according to claim 1, wherein The mixing device is a first-stage paddle (4) and a second-stage paddle (5); the first-stage paddle (4) is located below the hollow structure of the rotating shaft (3) and above the second-stage paddle (5); the second-stage paddle (5) is close to the bottom end of the mixing tank (1).

9. The rotary shaft jet type dynamic chemical dosing device according to claim 1, characterized in that, The central axis of the medicine spraying hole (13) forms an angle of 30° with the axis of the rotating shaft (3).

10. A rotary shaft jet type dynamic chemical dosing device according to claim 1, characterized in that, The other end of the rotating shaft (3) and the top cover of the mixing tank (1) are assembled through a bearing device and a sealing device; the bearing device includes a bearing (18) and a bearing bushing (15); the sealing device is a bushing gasket (16) and a bushing sealing ring (17); the other end of the rotating shaft (3) and the top cover of the mixing tank (1) are assembled through the bearing (18) and the bearing bushing (15) on the bearing (18); One end of the rotating shaft (3) at the bottom end of the mixing tank (1) is also assembled through a bearing device and a sealing device; The bearing device includes a bearing (18) and a bearing bushing (15); the sealing device is a bushing gasket (16) and a bushing seal ring (17); one end of the rotating shaft (3) is assembled with the bottom end of the mixing tank (1) through the bearing (18) and the bearing bushing (15) on the bearing (18). The gasket (16) and the bushing seal ring (17) are used to achieve the seal between the bearing device and the mixing tank (1).

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