Powder-liquid self-suction type homogenizing and emulsifying pump with spiral conveying function

Abstract

The utility model belongs to the technical field of emulsification pumps, and particularly relates to a powder-liquid self-suction type homogenizing emulsification pump with a spiral conveying function. The self-priming pump comprises a pump body with the axis horizontally arranged, a pump cavity of the pump body forms a working cavity where a self-priming impeller is located, the self-priming impeller is coaxially installed at the front end of a main shaft, so that the pump cavity where the front end of the main shaft is located forms a feeding port, and the self-priming pump is characterized in that in the axial direction of the main shaft, the cavity wall of the feeding port in the pump body extends forwards to form a mixing chamber; a spiral conveying shaft is arranged in the material mixing chamber and is coaxially mounted at the front end of the main shaft, and the material conveying direction of the spiral conveying shaft points to the direction of the material inlet; a liquid inlet is formed in the cavity wall of the mixing chamber where the front shaft end of the spiral conveying shaft is located, and a powder inlet is formed in the cavity wall of the mixing chamber where the shaft side of the spiral conveying shaft is located. According to the utility model, powder and liquid phase materials can be sucked into the pump body for high-speed mixing homogenization and reaction dissolution, and meanwhile, the material refining and dispersing shearing effects are better.

Description

Technical Field

[0001] The utility model belongs to the technical field of emulsification pumps, and in particular relates to a powder-liquid self-priming homogenizing emulsification pump with spiral conveying. Background Art

[0002] At present, in the industry, the mixing and dispersion of powder and liquid materials are mostly completed by homogenizing emulsifier pumps. In actual operation, the premixed materials of powder and liquid enter the pump cavity through the side wall or end of the homogenizing emulsifier pump; due to the multiple sets of dual interlocking stators and rotors installed in the pump cavity of the homogenizing emulsifier pump, the high tangential speed generated by the high-speed rotation of the rotor and the strong kinetic energy brought by the high-frequency mechanical effect will cause the sucked premixed materials to be subjected to strong mechanical and hydraulic shearing, centrifugal extrusion, liquid layer friction, impact tearing and turbulence in the narrow gap between the stator and the rotor. The immiscible solid phase and liquid phase are instantly dispersed and emulsified evenly and finely under the joint action of the corresponding mature process and appropriate additives, and the dispersed and emulsified materials are pumped out through the discharge hole on the side wall of the pump body. The operational defect of the above-mentioned existing structure is that due to the small specific gravity of the powder, when mixed with the liquid, it often produces wall hanging, balling, coagulation and other phenomena, which is one of the reasons why the powder and liquid must be premixed before entering the homogenizing emulsifier pump. However, when the powder is premixed externally, dust is prone to escape, which obviously cannot meet the existing environmental protection needs of enterprises. People have also considered directly pumping the powder and liquid into the homogenizing emulsification pump or sucking them into the homogenizing emulsification pump under negative pressure, so as to complete the powder-liquid mixing and emulsification dispersion process at one time, so as to further reduce the processing steps and improve the processing efficiency. However, on the one hand, how to evenly disperse and mix the dust with the liquid flow at the moment of entering the liquid flow, without the powder hanging on the wall, forming balls, agglomerates or even clogging the discharge end of the powder inlet pipe due to the wetting of the liquid, this problem has always been unresolved. On the other hand, the idea of ​​a self-priming pump body is very beautiful; however, the powder may be accompanied by air when feeding, and the formation of a self-priming environment requires that the negative pressure environment cannot be destroyed. The traditional self-priming pump structure, once the powder containing air enters, the negative pressure environment is destroyed, causing the self-priming effect to weaken or even disappear for a short time, followed by powder flow interruption, which will greatly affect the uniformity of material discharge and the uniformity of the material during emulsification and dispersion, and then cause either reduced production capacity or quality problems of the mixed product, thus bringing many troubles to the normal and efficient operation of the enterprise. Summary of the invention

[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a powder-liquid self-priming homogenizing emulsifying pump with spiral conveying, which can rely on the coordinated cooperation of rotor suction and spiral conveying to suck powder-liquid phase materials into the pump body for high-speed mixing, homogenization, reaction and dissolution, avoiding the problems of dust flying and raw material loss caused by external mixing, and at the same time, the material refinement and dispersion shearing effect are better. The utility model is particularly suitable for industrial online continuous work and has the advantages of short-distance and low-lift transportation.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A powder-liquid self-priming homogenizing emulsifying pump with spiral conveying, comprising a pump body with a horizontally arranged axis, a pump cavity of the pump body constituting a working cavity where a self-priming impeller is located, and the self-priming impeller is coaxially mounted at the front end of a main shaft so that the pump cavity of the pump body where the front end of the main shaft is located forms an inlet, and is characterized in that: along the axial direction of the main shaft, the cavity wall at the inlet on the pump body extends forward to form a mixing chamber; a spiral conveying shaft is arranged in the mixing chamber, and the spiral conveying shaft is coaxially mounted at the front end of the main shaft, and the feeding direction of the spiral conveying shaft points to the direction of the inlet; a liquid inlet is arranged at the cavity wall of the mixing chamber where the front axial end of the spiral conveying shaft is located, and a powder inlet is arranged at the cavity wall of the mixing chamber where the axial side of the spiral conveying shaft is located.

[0006] Preferably, the mixing chamber has a wedge-shaped surface, the tip of the angle formed by the wedge-shaped surface and the horizontal plane points to the direction of the liquid material inlet, and the powder material inlet is installed on the wedge-shaped surface so that the discharge direction of the powder material inlet is inclined to the screw conveying shaft.

[0007] Preferably, a threaded fitting relationship is formed between the screw conveying shaft and the main shaft, and the thread tightening direction and the rotation direction of the main shaft when working are opposite to each other.

[0008] Preferably, a stop plate for limiting the screwing depth of the screw conveying shaft is provided at the shaft body of the screw conveying shaft, and a hexagonal screw head is coaxially arranged at the front shaft end of the screw conveying shaft.

[0009] Preferably, it also includes a liquid material storage tank, the discharge end of the liquid material storage tank is connected to the liquid material inlet via a liquid material pipeline, and a liquid material switch valve is arranged on the liquid material pipeline.

[0010] Preferably, it also includes a powder hopper, the discharge end of the powder hopper is connected to the powder inlet via a powder pipeline, and a powder switch valve is arranged on the powder pipeline.

[0011] Preferably, the pump body includes a pump casing with a discharge port opened at the barrel, and a front pressure cover and a rear pressure cover respectively threadedly engaged with the two ends of the pump casing; the motor is installed at the rear of the pump body and connected to the pump body through a connecting frame; the main shaft passes through the connecting frame and the rear pressure cover in sequence and then extends into the pump cavity of the pump body, and a sealing assembly is arranged on the rear pressure cover and / or the connecting frame at the engaging position with the main shaft.

[0012] Preferably, the sealing assembly is a mechanical seal.

[0013] The beneficial effects of the utility model are:

[0014] Through the above scheme, it can be known that the utility model presents a horizontal structure as a whole. The liquid material and the powder material are first soaked and mixed in the special-shaped mixing chamber, and are simultaneously premixed and continuously moved forward under the action of the spiral conveying shaft; then, the solid-liquid mixture moves to the self-priming impeller, and the self-priming impeller, that is, the rotor, rotates at high speed to generate vacuum suction, and the mixed material enters the rotor area under the dual action of spiral conveying and vacuum suction. At the same time, the rotor generates an extremely high linear speed, which also makes the solid-liquid mixture completely soaked between the rotor and stator gap, and after strong impact, crushing, centrifugal extrusion, liquid layer friction, and strong shearing, it flies out. Under the action of multiple different directional forces, the particle size of the material particles becomes narrower, and finally achieves the effect of refinement, homogenization, mixing, dispersion and emulsification.

[0015] The utility model can rely on the coordinated cooperation of the rotor suction and the spiral conveying to realize the continuous linear conveying function of the material on the one hand; on the other hand, the spiral conveying itself also has the effect of pre-mixing and pre-wetting to ensure the pre-operation effect of the rotor before feeding and improve the subsequent homogenization performance. In addition, due to the transition effect of the spiral conveying shaft, the liquid material inlet and the powder material inlet are relatively far away from the feed port, and are sheared and mixed by the spiral stirring shaft before approaching the feed port; in this way, especially the powder material, the negative pressure environment of the self-priming impeller, that is, the rotor area, will not be destroyed, and the subsequent self-priming effect can be ensured, the powder material flow interruption can be avoided, the uniformity of the powder material discharge and the uniformity of the solid-liquid mixture during emulsification and dispersion can be ensured, and the production capacity and high quality of the mixed product can be guaranteed. The utility model sucks the powder and liquid phase materials into the pump body for high-speed mixing, homogenization, reaction and dissolution, which not only avoids the problems of dust flying and raw material loss caused by external mixing, but also has better material refinement and dispersion shearing effects, and the effect is remarkable.

[0016] Furthermore, the utility model has a horizontal continuous pipeline layout, which makes the utility model very suitable for industrial online continuous work and has the advantages of short-distance and low-lift transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the assembly state of the utility model;

[0018] Figure 2 for Figure 1 A partial enlarged view of part I.

[0019] The actual correspondence between the reference numerals and component names of the utility model is as follows:

[0020] 10- pump body; 11- pump casing; 12- front gland; 13- rear gland;

[0021] 20-main shaft; 21-self-priming impeller;

[0022] 30-screw conveying shaft; 31-stop plate; 32-hexagonal screw head;

[0023] 40-mixing chamber; 40a-liquid material inlet; 40b-powder material inlet; 41-wedge-shaped surface;

[0024] 51-liquid material storage tank; 52-liquid material pipeline; 53-liquid material switch valve;

[0025] 61- powder hopper; 62- powder pipeline; 63- powder switch valve;

[0026] 70-motor; 80-connecting frame; 90-sealing assembly. DETAILED DESCRIPTION

[0027] For ease of understanding, here we combine Figure 1-2 The specific structure and working mode of the utility model are further described as follows:

[0028] like Figure 1-2 As described above, the utility model presents a horizontal pipeline structure as a whole, specifically including a base with rollers, and the base is equipped with three modules, namely, a liquid material feeding component, a powder material feeding component and a homogenizing pump component. Among them:

[0029] The homogenizing pump assembly is the core design part of the utility model. The homogenizing pump assembly includes a motor 70, a connecting frame 80, a mechanical seal as a sealing assembly 90, and a pump body 10, which are arranged in sequence from right back to front along the axis. As for the pump body 10, it is formed by the front gland 12, a pump housing 11 with a discharge port, and a rear gland 13. The front gland 12 extends forward with a special-shaped or wedge-shaped mixing chamber 40, so that the screw conveying shaft 30 can be installed in the mixing chamber 40, and is coaxially fastened to the end face of the main shaft 20 by threaded matching. When the screw is installed, the screw conveying shaft 30 relies on the operator to apply force at the hexagonal screw head until it stops when the stop plate 31 fits the front end face of the main shaft 20, that is, the assembly is completed. Of course, in actual operation, the screw conveying shaft 30 can also be directly designed as a sleeve, and driven into the main shaft 20 and tightened by a hexagonal screw, but the assembly reliability is weaker than that of an integrated part. In addition, a self-priming impeller 21 is installed at the shaft of the main shaft 20 located in the pump cavity of the pump body 10, so as to maximize the powder-liquid mixing, homogenization and emulsification effects by relying on the dual wetting, mixing and stirring and dispersing functions of the self-priming impeller 21 and the screw conveying shaft 30.

[0030] Furthermore, the mixing chamber 40 is a core component, which has a wedge-shaped surface 41, so that the whole presents Figure 2The wedge-shaped structure shown. The wedge surface 41 is the mounting surface of the powder inlet 40b, so that the powder can be directly sprayed obliquely on the working area of ​​the screw conveying shaft 30 under its own weight; and the angle formed by the wedge surface 41 and the horizontal plane points to the direction, that is, the liquid inlet 40a is set on the wall of the mixing chamber 40 in the direction of the front shaft end of the screw conveying shaft 30. When the liquid enters the mixing chamber 40, it will not be mixed immediately, but after entering the working area of ​​the screw conveying shaft 30, it will be infiltrated and premixed with the powder wrapped by the blades of the screw conveying shaft 30 at the same time, so as to ensure that the dust with a small specific gravity is evenly mixed with the liquid flow, and finally avoid the occurrence of powder hanging on the wall, balling, coagulation, etc. At the same time, the feeding angle of the powder entering obliquely is more conducive to rapid mixing with the liquid and rapid shear mixing in the screw conveying shaft 30 compared with vertical feeding, and the initial mixing effect is excellent.

[0031] For liquid feed assembly and powder feed assembly, refer to Figure 1 As shown, the liquid material feeding assembly includes a liquid material storage tank 51, the discharge end of the liquid material storage tank 51 is connected to the liquid material inlet 40a via a liquid material pipeline 52, and a liquid material switch valve 53 is arranged on the liquid material pipeline 52. The powder material feeding assembly includes a powder material hopper 61, the discharge end of the powder material hopper 61 is connected to the powder material inlet 40b via a powder material pipeline 62, and a powder material switch valve 63 is arranged on the powder material pipeline 62. Through the coordinated opening and closing of the two sets of switch valves, the controllable feeding purpose of powder and liquid can be achieved, which will not be repeated here.

[0032] Reference Figure 1 As shown, when the utility model is actually working, under the coordination of the liquid material feeding component and the powder material feeding component, the liquid material and the powder material are first infiltrated and mixed in the special-shaped mixing chamber 40, and are simultaneously premixed and continuously moved forward under the action of the spiral conveying shaft 30; then, the solid-liquid mixture moves to the self-priming impeller 21, and the self-priming impeller 21, that is, the rotor rotates at high speed to generate vacuum suction, and the mixed material enters the rotor area under the dual action of spiral conveying and vacuum suction. At the same time, the rotor generates an extremely high linear speed, which also makes the solid-liquid mixture completely infiltrated between the rotor and the stator gap, and after strong impact, crushing, centrifugal extrusion, liquid layer friction, and strong shearing, it flies out. Under the action of multiple different directional forces, the particle size of the material particles becomes narrower, and finally achieves the predetermined refinement, homogenization, mixing, dispersion and emulsification effect.

[0033] Of course, for those skilled in the art, the present invention is not limited to the details of the above exemplary embodiments, but also includes the same or similar methods that can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is limited by the attached claims rather than the above description.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0035] The technical parts not described in detail in the present invention are all known technologies.

Claims

1. A powder-liquid self-priming homogenizing emulsifying pump with a spiral conveyor, comprising a pump body (10) with a horizontally arranged axis, wherein a pump cavity of the pump body (10) constitutes a working cavity where a self-priming impeller (21) is located, and the self-priming impeller (21) is coaxially mounted on the front end of a main shaft (20) so that the pump cavity of the pump body (10) where the front end of the main shaft (20) is located forms a material inlet, and is characterized in that: Along the axial direction of the main shaft (20), the cavity wall at the material inlet on the pump body (10) extends forward to form a mixing chamber (40); a screw conveying shaft (30) is arranged in the mixing chamber (40), and the screw conveying shaft (30) is coaxially installed on the front end of the main shaft (20), and the material feeding direction of the screw conveying shaft (30) points to the direction of the material inlet; a liquid material inlet (40a) is arranged at the cavity wall of the mixing chamber (40) where the front axial end of the screw conveying shaft (30) is located, and a powder material inlet (40b) is arranged at the cavity wall of the mixing chamber (40) where the axial side of the screw conveying shaft (30) is located.

2. The powder-liquid self-priming homogenizing emulsifying pump with spiral conveyor according to claim 1, characterized in that: The mixing chamber (40) is provided with a wedge-shaped surface (41), the tip of the angle formed by the wedge-shaped surface (41) and the horizontal plane points in the direction of the liquid material inlet (40a), and a powder material inlet (40b) is installed on the wedge-shaped surface (41), so that the discharge direction of the powder material inlet (40b) is inclined toward the screw conveying shaft (30).

3. The powder-liquid self-priming homogenizing emulsifying pump with spiral conveyor according to claim 1 or 2, characterized in that: A threaded matching relationship is formed between the screw conveying shaft (30) and the main shaft (20), and the threaded tightening direction and the rotation direction of the main shaft (20) when working are opposite to each other.

4. The powder-liquid self-priming homogenizing emulsifying pump with spiral conveyor according to claim 3, characterized in that: A stop plate (31) is provided at the shaft body of the screw conveying shaft (30) for limiting the screwing depth of the screw conveying shaft (30), and a hexagonal screw head (32) is coaxially arranged at the front shaft end of the screw conveying shaft (30).

5. The powder-liquid self-priming homogenizing emulsifying pump with spiral conveyor according to claim 1 or 2, characterized in that: It also includes a liquid material storage tank (51), the discharge end of the liquid material storage tank (51) is connected to the liquid material inlet (40a) via a liquid material pipeline (52), and a liquid material switch valve (53) is arranged on the liquid material pipeline (52).

6. The powder-liquid self-priming homogenizing emulsifying pump with spiral conveyor according to claim 1 or 2, characterized in that: It also includes a powder hopper (61), the discharge end of the powder hopper (61) is connected to the powder inlet (40b) via a powder pipeline (62), and a powder switch valve (63) is arranged on the powder pipeline (62).

7. The powder-liquid self-priming homogenizing emulsifying pump with spiral conveyor according to claim 1 or 2, characterized in that: The pump body (10) comprises a pump casing (11) with a discharge port at the barrel, and a front gland (12) and a rear gland (13) respectively threadedly engaged with the two ends of the pump casing (11); the motor (70) is installed at the rear of the pump body (10) and connected to the pump body (10) through a connecting frame (80); the main shaft (20) passes through the connecting frame (80) and the rear gland (13) in sequence and then extends into the pump cavity of the pump body (10), and a sealing assembly (90) is arranged on the rear gland (13) and / or the connecting frame (80) at the position where the main shaft (20) is engaged.

8. The powder-liquid self-priming homogenizing emulsifying pump with spiral conveyor according to claim 7, characterized in that: The sealing assembly (90) is a mechanical seal.

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