Pneumatic stirring device

Abstract

The utility model relates to a stirring device, in particular to a pneumatic stirring device which comprises an air source, a connecting pipe and a stirring pipe arranged in a liquid preparation cylinder which are communicated in sequence, the stirring pipe is a T-shaped pipe and is composed of a vertical pipe and two horizontal pipes which are horizontally arranged on the two sides of the lower end of the vertical pipe, and a plurality of nozzles or air injection holes capable of forming stirring rotational flow are formed in the opposite single sides of the two transverse pipes. The stirring device is extremely simple in structure, small in occupied space, low in energy consumption, good in stirring effect, low in failure rate and flexible in stirring strength.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of stirring settings, specifically a kind of pneumatic stirring device. BACKGROUND

[0002] At present, in production and life, the mixing stirring scheme commonly used in solute dissolution process adopts electric mixer, so that solute and solution are fully mixed to form solution. Commonly used motor drives paddle shaft to rotate through speed reducer, and the paddle agitates solution to realize solute dissolution, complete solution preparation, and the preparation of easily soluble substances is relatively smooth, and the preparation of difficultly soluble substances takes a long time and has low efficiency. There is also a scheme of using pneumatic motor or air cylinder to drive rotating shaft to realize stirring solution and complete solution preparation. Since the solution preparation stirring scheme uses more mechanical structures, there are problems of high purchase cost, high operation and maintenance cost, long stirring time and low efficiency. It is difficult to meet the design requirements when the installation space is limited, and generally one set of mixer needs to be installed for each set of solution preparation device, which requires multiple sets of high purchase cost.

[0003] CN205700521U discloses a pneumatic stirring reaction kettle, which relates to the technical field of hydrometallurgy. The outer sleeve side wall of the shaft sleeve is welded on the jacketed kettle body, the outer sleeve upper surface of the shaft sleeve is welded with the flange, the inner sleeve of the shaft sleeve is welded with the pneumatic stirring shaft, and the pneumatic stirring shaft can rotate freely. The pneumatic stirring reaction kettle has layered gas outlet faces and gas outlet pipes of different lengths, and the stirring speed can be adjusted by adjusting the air flow. Even if the stirring shaft is buried in the sediment, the stirring speed will slowly rise due to the air flow buffer when starting, which plays the role of automatic frequency conversion. In this scheme, compressed air enters the air supply main pipe and is sprayed from the air outlet branch pipe along the rotating tangent direction to drive the stirring shaft to rotate, thereby achieving the purpose of stirring. However, this scheme has the following problems: 1) for liquid phase with particulate matter or sediment, on the one hand, the resistance is large, and the pneumatic stirring requires a larger gas pressure, which consumes a lot of energy; on the other hand, due to the rotating connection, the structure is more complex, and small particles are easy to enter the shaft, shaft sleeve or bearing seat of the connection, which causes friction damage or air leakage, resulting in high failure rate. 2) when compressed air is discharged from the air outlet branch pipe, the force for driving the stirring shaft to rotate is directly applied to the liquid phase, which greatly reduces the force for forming a rotating flow during stirring, and the actual stirring effect is limited. SUMMARY

[0004] The purpose of the present application is to solve the above technical problems, and to provide a pneumatic stirring device with a very simple structure, small device space occupation, low energy consumption, good stirring effect, low failure rate and flexible stirring intensity.

[0005] The technical scheme comprises a gas source, a connecting pipe and a stirring pipe arranged in a liquid preparation cylinder in sequence, the stirring pipe is a T-shaped pipe, which is composed of a vertical pipe and two horizontal pipes arranged horizontally on both sides of the lower end of the vertical pipe, and a plurality of nozzles or air injection holes capable of forming stirring rotational flow are arranged on the two horizontal pipes in different directions and on one side.

[0006] Preferably, the nozzles or air injection holes are inclined upward, and the included angle a between the center line of the nozzles or air injection holes and the vertical line of the horizontal pipe is 30-50°.

[0007] Preferably, the two horizontal pipes are asymmetrically bored.

[0008] Preferably, the diameter of the nozzles or air injection holes is 4-8 mm.

[0009] Preferably, the spacing of the plurality of nozzles or air injection holes on the horizontal pipe is 100-150 mm.

[0010] Preferably, the total length of the two horizontal pipes is less than 50-100 mm of the diameter of the liquid preparation cylinder.

[0011] Preferably, the spacing between the horizontal pipe and the bottom surface of the liquid preparation cylinder is 50-100 mm.

[0012] Preferably, a throttle valve is arranged on the connecting pipe.

[0013] Preferably, a pressure gauge is arranged on the connecting pipe.

[0014] Beneficial effects:

[0015] 1) The stirring pipe is a T-shaped pipe, the stirring pipe does not rotate by itself, compressed air is sprayed out through the asymmetrically bored nozzles or air injection holes of the two horizontal pipes in different directions and on one side, and directly acts on the liquid phase to form a stirring rotational flow, so that the energy consumption is low and the stirring effect is good.

[0016] 2) The included angle a between the center line of the nozzles or air injection holes and the vertical line of the horizontal pipe is 30-50°, the rotational flow direction can be further adjusted through the setting of the included angle, the resistance is increased when the included angle is too large, the stirring effect is affected, the stirring range is reduced when the included angle is too small, and the stirring is not conducive. The two horizontal pipes are asymmetrically bored, which is more conducive to forming turbulent flow, the medicament mixing is more sufficient, and the liquid preparation efficiency is improved.

[0017] 3) The throttle valve and the pressure gauge are arranged on the connecting pipe, and the stirring intensity can be flexibly adjusted.

[0018] 4) The utility model has the advantages of simple structure, low energy consumption, small occupied space, good stirring effect, low failure rate, flexible stirring intensity, associated and centralized gas supply of multiple sets of stirring devices, low gas source requirement (generally 0.1-0.3 MPa), and special suitability for environments with centralized compressed air supply. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the utility model.

[0020] Figure 2 It is a distribution schematic view of the air injection hole on the horizontal pipe.

[0021] Figure 3 It is a schematic view of the air injection hole included angle.

[0022] Wherein, 1-gas source, 2-connection pipe, 3-throttle valve, 4-pressure gauge, 5-liquid mixing barrel, 6-horizontal pipe, 7-vertical pipe, 8-air injection hole. Specific implementation

[0023] The utility model will be further explained in connection with the drawings:

[0024] Referring to Figure 1 , gas source 1, connection pipe 2 and the stirring pipe arranged in liquid mixing cylinder 5 are sequentially communicated, throttle valve 3 and pressure gauge 4 are arranged on connection pipe 2, the throttle valve can be manually or automatically regulated, and stepless adjustment stirring intensity can be realized by adjusting compressed gas pressure, and the structure is simple and reliable.

[0025] The stirring pipe is T-shaped pipe, which is composed of vertical pipe 7 and two horizontal pipes 6 horizontally arranged on both sides of the lower end of vertical pipe 7, vertical pipe 7 does not rotate itself, and is only used for conveying compressed gas to the two horizontal pipes, and the structure that is perpendicular to the vertical pipe and fixedly connected is more simple and reliable, is not easy to be damaged and is easy to maintain.

[0026] Referring to Figure 2 The two horizontal pipes 6 are oppositely provided with a plurality of nozzles or air injection holes (air injection holes 8 in the embodiment) that can form stirring rotational flow, that is, both of the two horizontal pipes 6 are provided with holes on one side, and the holes are oppositely directed, so that rotational flow can be well formed, and stirring efficiency is improved.

[0027] Referring to Figure 3 In the embodiment, the air injection holes 8 are obliquely opened upwards, the included angle a between the center line of the air injection hole and the vertical line of the horizontal pipe 6 is 30°-50°, the hole diameter of the air injection hole is 4-8 mm, and the spacing is 100-150 mm.

[0028] In another embodiment, in order to further improve the stirring effect, the total length h1 of the two horizontal pipes 6 is less than 50-100 mm of the diameter of the liquid mixing cylinder 5, and the spacing h2 between the horizontal pipe 6 and the bottom surface of the liquid mixing cylinder 5 is 50-100 mm.

[0029] As another embodiment, the two horizontal pipes 6 can be symmetrically or asymmetrically provided with holes, and the asymmetrically provided holes are preferred, turbulence is more easily formed during stirring, medicament mixing is more sufficient, and it is more conducive to improving the liquid mixing efficiency, the spacing between adjacent holes can be the same or different, or regularly distributed, so as to flexibly adjust the local air flow pressure

[0030] The utility model discloses low cost, and the energy consumption is about 1 / 20 below of mechanical stirring, does not need motor, motor and other complex components, has no rotating part, and simple use maintenance, long life.

Claims

1. A pneumatic stirring device comprising, in sequence, a gas source, a connecting pipe and a stirring pipe arranged in a liquid preparation cylinder, characterized in that, The stirring pipe is a T-shaped pipe, which is composed of a vertical pipe and two horizontal pipes arranged horizontally at the lower end of the vertical pipe, and a plurality of nozzles or air injection holes are arranged on one side of the two horizontal pipes in different directions to form a stirring vortex.

2. The pneumatic stirring device according to claim 1, characterized in that The nozzles or air injection holes are inclined upward, and the angle a between the center line and the vertical line of the horizontal pipe is 30°-50°.

3. Aerodynamic stirring device according to claim 1 or 2, characterized in that The two horizontal pipes are asymmetrically opened.

4. A pneumatic stirring device according to claim 1 or 2, characterised in that The diameter of the nozzles or air injection holes is 4-8 mm.

5. The pneumatic stirring device according to claim 4, characterized in that The spacing of the plurality of nozzles or air injection holes on the horizontal pipe is 100-150 mm.

6. The pneumatic stirring device according to claim 1 or 2, characterized in that The total length of the two horizontal pipes is less than 50-100 mm of the diameter of the liquid preparation cylinder.

7. The pneumatic stirring device according to claim 6, characterized in that The spacing between the horizontal pipe and the bottom surface of the liquid preparation cylinder is 50-100 mm.

8. The pneumatic stirring device according to claim 1 or 2, characterized in that A throttle valve is arranged on the connecting pipe.

9. The pneumatic stirring device according to claim 1 or 2, characterized in that A pressure gauge is arranged on the connecting pipe.

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