Hydraulic self-locking type high-viscosity material stirring pneumatic conveying device

Abstract

The utility model provides a hydraulic self-locking type high-viscosity material stirring pneumatic conveying device, which relates to the technical field of hydrometallurgy and comprises a stirring tank. The stirring paddle comprises a stirring shaft arranged in the center of the stirring paddle, a scraping stirring paddle welded on the stirring shaft and a nest-shaped stirring paddle welded at the bottom of the stirring paddle; a flange is installed at the upper end of the stirring shaft and connected with a main shaft through a bolt, and the main shaft is connected with a worm speed reduction explosion-proof motor through a coupler. According to the device, a hydraulic cylinder is used for locking, and meanwhile, a worm speed-reducing explosion-proof motor is used as a driving device to drive a stirring paddle to fully mix and stir slurry; scraping edge strips are welded on the periphery of the stirring paddle and used for scraping and cleaning iron ore concentrate slurry adhered to the surface of the tank wall, so that materials can be efficiently conveyed; the bottom of the stirring paddle is welded with a nest-shaped structure, and the nest-shaped stirring paddle forcibly gathers materials towards the center of the bottom and presses the materials out of the bottom discharge port along with compressed air through the discharge hole.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrometallurgy, in particular to a pneumatic conveying device for stirring high-viscosity materials with hydraulic self-locking. Background Art

[0002] Mechanical stirring refers to the process of using mechanical equipment to mix or stir materials. Common forms of mechanical stirring: Axial flow mixer: This mixer stirs materials through a rotating shaft and stirring blades installed on the shaft; Drum mixer: The drum mixer uses one or more drums to stir materials, and the grains move inside the drum as the drum rotates, thus achieving the mixing effect; Screw ribbon mixer: The screw ribbon mixer rotates a screw ribbon with spiral blades inside the machine body, pushing and stirring the materials along the screw ribbon, suitable for stirring powdery or granular materials; Planetary mixer: The planetary mixer uses one or more stirring arms with stirring blades installed on them. The stirring arms rotate around a central axis and also move inside the mixer container itself, thus achieving the mixing and stirring of materials.

[0003] During the laboratory sample preparation process, when stirring and drying materials with relatively high viscosity, using the above stirring schemes, it is very easy for the materials to adhere in the stirring tank and not be completely discharged, with a large amount of residual materials, affecting the discharge and the test results of the next batch.

[0004] In view of the problem that the viscosity of the slurry is too high and it is easy to adhere to the surface of the tank wall during the stirring and mixing feeding process of the slurry, a self-locking high-viscosity material stirring pneumatic conveying device with a scraping function and preventing the formation of a stirring blind area at the bottom of the stirring paddle is especially developed. Summary of the Utility Model

[0005] The utility model provides a pneumatic conveying device for stirring high-viscosity materials with hydraulic self-locking, which solves the problem that the existing slurry adheres to the surface of the tank wall and is not easy to discharge.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A pneumatic conveying device for stirring high-viscosity materials with hydraulic self-locking includes a stirring tank body. A stirring paddle is arranged inside the stirring tank body. The stirring paddle includes a stirring shaft arranged at the center of the stirring paddle, a scraping stirring paddle welded on the stirring shaft, and a nest-shaped stirring paddle welded at the bottom of the stirring paddle. Circumferential stirring paddles are vertically welded at both ends of the scraping stirring paddle; A flange is installed at the upper end of the stirring shaft, and the flange is connected to the main shaft through bolts. The main shaft is connected to a worm gear reduction explosion-proof motor through a coupling.

[0008] Furthermore, a stirring tank cover is arranged above the stirring tank body, and the worm gear reduction explosion-proof motor is installed and fixed on the support flange of the stirring tank cover through bolts.

[0009] Furthermore, a static seal is provided between the stirring tank body and the stirring tank cover.

[0010] Furthermore, the compressed air solenoid valve is connected to the stirring tank cover by a thread, and the digital display pressure sensor is connected to the stirring tank cover by a thread.

[0011] Furthermore, the liquid feed ball valve is installed at the inlet pipe on the tank cover by a pipe thread, and the discharge ball valve is connected to the air pipe installed at the bottom of the stirring tank body through a quick connector.

[0012] Furthermore, a number of diamond-shaped reinforcing ribs are evenly welded between the flange and the nest-shaped stirring paddle, and an intermediate stirring paddle is welded between the relative reinforcing ribs.

[0013] Furthermore, the scraping stirring paddle is an I-beam welded to the stirring shaft, and its welding direction is perpendicular to the stirring shaft.

[0014] Furthermore, the edge of the circumferential stirring paddle is wrapped with polyurethane soft material.

[0015] Furthermore, the cross-section of the blade of the nest-shaped stirring paddle is triangular.

[0016] The beneficial effects of the present utility model are as follows:

[0017] This device uses a hydraulic cylinder for locking, and at the same time uses a worm gear reduction explosion-proof motor as a driving device to drive the stirring paddle to fully mix and stir the slurry; scraping edge strips are welded around the stirring paddle to scrape and clean the iron ore concentrate slurry adhered to the surface of the tank wall, so that the material can be efficiently transported; a nest-shaped structure is welded at the bottom of the stirring paddle, and the nest-shaped stirring paddle forces the material to gather towards the bottom center and is discharged through the discharge hole along with the compressed air through the bottom discharge port.

[0018] The present utility model can fully mix the metal powder and the liquid to form a slurry, stir it evenly through a pressure stirring tank, and then transport the slurry to other reaction vessels through positive pressure, and can fully stir and clean the slurry with a relatively high viscosity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0020] Figure 1 It is the front view of the overall device of the present utility model.

[0021] Figure 2This is the top view of the overall device of the present utility model.

[0022] Figure 3 This is a schematic diagram of the stirring paddle in the present utility model.

[0023] Figure 4 This is a schematic diagram of the scraping stirring paddle in the present utility model.

[0024] Figure 5 This is a schematic diagram of the nest-shaped stirring paddle in the present utility model.

[0025] Explanation of the reference numerals in the attached drawings:

[0026] 1. Liquid feed ball valve; 2. Stirring tank body; 3. Worm gear reduction explosion-proof motor; 4. Hydraulic clamping device; 5. Stirring paddle; 51. Stirring shaft; 52. Reinforcing rib; 53. Scraping stirring paddle; 54. Nest-shaped stirring paddle; 55. Scraping stirring paddle; 56. Intermediate stirring paddle; 6. Discharge ball valve; 7. Compressed air solenoid valve; 8. Digital display pressure sensor. Specific implementation manners

[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the 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 the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners of the present utility model. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0030] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be clear that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in accordance with actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present utility model: the orientation terms "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0032] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the spatial positional relationships of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "beneath other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0033] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meaning, and thus cannot be construed as limiting the protection scope of the present utility model.

[0034] The utility model provides a technical solution: a pneumatic conveying device for stirring high-viscosity materials with hydraulic self-locking, as Figures 1-5 shown, which includes a stirring tank body 2 and a stirring tank cover arranged above it. The liquid feed ball valve 1 is installed at the inlet pipe of the stirring tank cover through pipe threads, and the relationship between the stirring tank body 2 and the tank cover is a static seal. The worm gear reduction explosion-proof motor 3 is installed and fixed on the support flange of the stirring tank cover through bolts. The hydraulic clamping device 4 is two hydraulic cylinders that are clamped up and down driven by a slide cylinder. The hydraulic cylinders are installed and fixed on the sliding end of the slide cylinder through brackets. The entire slide cylinder is installed on five welding brackets around the barrel wall of the stirring tank 2 through bottom bolts. When the slide cylinder acts, it drives the hydraulic cylinders to extend forward, and the piston rods of the hydraulic cylinders are driven by hydraulic oil to extend to clamp the sealing flange on the stirring tank cover and the sealing flange on the stirring tank body 2, thereby realizing the locking of the tank cover and the tank body 2.

[0035] A stirring paddle 5 is arranged inside the stirring tank body 2. There is a welding flange on the upper part of the stirring paddle 5. The stirring paddle flange is connected to the main shaft through bolts, and the main shaft is connected to the stirring shaft of the explosion-proof motor 3 through a coupling.

[0036] The discharge ball valve 6 is connected to the air pipe installed at the bottom of the tank through a quick connector. The compressed air solenoid valve 7 is connected to the tank cover through threads, and the digital display pressure sensor 8 is also connected to the tank cover through threads.

[0037] The main components of the stirring paddle are as Figures 2-5 shown: it consists of a stirring shaft 51, a reinforcing rib 52, a scraping stirring paddle 53, an intermediate stirring paddle 56, a bottom concave stirring paddle 54, and a circumferential stirring paddle 55.

[0038] The stirring shaft 51 is a circular cross-section main shaft at the center of the stirring paddle 5. The upper end face of the stirring shaft 51 is an installation flange, and the flange is connected to the main shaft through bolts. The main shaft is connected to the explosion-proof motor 3 through a coupling. The reinforcing rib 52 is a hexagonal steel, which is used to fix the bottom concave stirring paddle 54 and the upper flange, and can reduce the stirring resistance; the intermediate stirring paddle 56 is welded between the relative reinforcing ribs 52. The scraping stirring paddle 53 is an I-beam welded on the stirring shaft 51, and the welding direction is perpendicular to the stirring shaft. The two ends of the scraping stirring paddle 53 are respectively vertically welded with circumferential stirring paddles 55, and the edges of the circumferential stirring paddles 55 are wrapped with polyurethane soft materials, which can play a role in scraping the slurry attached to the inner side of the barrel wall during rotation. The concave stirring paddle 54 is welded at the bottom of the structure of the stirring paddle 5, and can drive the deposited materials in the bottom stirring blind area to the periphery during rotation, avoiding material deposition and blocking the discharge hole.

[0039] To achieve a better stirring effect, the intermediate stirring paddle 56 is installed at a certain angle

[0040] The cross-section of the nest-shaped paddle is triangular. When the paddle rotates, it turns over the bottom materials, and the two acute angles on both sides can scrape the materials at the bottom of the tank. When discharging is required, the nest-shaped paddle shaft rotates clockwise to force the materials to gather towards the center and be discharged through the holes at the bottom of the tank.

[0041] The circumferential stirring paddle 55, the intermediate stirring paddle 56, the nest-shaped stirring paddle 54, and the reinforcing rib 52 can mix the materials evenly when rotating through the stirring shaft, effectively preventing the materials from caking.

[0042] When discharging or stirring, the stirring paddle 5 actively scrapes the materials, and there is less material residue in the tank;

[0043] The nest-shaped stirring paddle 54 at the bottom assists in concentrating the materials at the discharge port, facilitating discharge by compressed air;

[0044] The worm stirring motor 3 is adopted to increase the stirring torque and optimize the stirring effect. The frequency converter can be used to adjust the motor speed. A slower speed is set in the initial stirring stage, and the speed can be increased later, which is beneficial to dispersing the materials;

[0045] After completing the conveying of a batch of materials, cleaning water is added to clean the tank and reduce material residue;

[0046] The digital display pressure sensor 8 is set to supplement compressed air according to the pressure value in the tank.

[0047] A hydraulic self-locking high-viscosity material stirring and pneumatic conveying device operates according to the following steps:

[0048] 1. The bottom discharge ball valve 6 is closed to seal the bottom discharge port.

[0049] 2. The hydraulic clamping device 7 is opened to lock the tank cover and the tank body 2, and the stirring paddle 5 is opened.

[0050] 3. The feeding pump pumps in the moisture-containing materials.

[0051] 4. After the moisture and the materials are fully mixed, the compressed air solenoid valve 7 is opened to introduce compressed air into the tank body.

[0052] 5. During the pressure boosting process, the digital display pressure sensor 8 is used to monitor the pressure value in the tank in real time.

[0053] 6. The worm reduction explosion-proof motor 3 has different speeds at different stirring stages. A slower speed is set in the initial stirring stage. After the materials are fully mixed and the slurry is relatively well mixed, the stirring torque decreases and then the stirring speed is increased.

[0054] 7. When the sensor value reaches 0.6 - 0.8 Mpa, the bottom discharge ball valve 6 is opened, and the stirring paddle 5 is rotated clockwise. The nest-shaped stirring paddle 54 forces the materials to gather towards the bottom center and be discharged through the discharge hole.

[0055] 8. After the discharging is completed, close the bottom discharge ball valve 6, add cleaning liquid into the tank body, turn on the stirring motor, and clean the tank body.

[0056] 9. After the cleaning is completed, open the discharge ball valve 6 to discharge the waste liquid.

[0057] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, shall be covered by the protection scope of the present invention.

Claims

1. A hydraulic self-locking high-viscosity material stirring pneumatic conveying device, characterized in that: The invention comprises a stirring tank body (2), wherein a stirring paddle (5) is arranged in the stirring tank body (2), wherein the stirring paddle (5) comprises a stirring shaft (51) arranged at the center of the stirring paddle (5), a scraping stirring paddle (53) welded on the stirring shaft (51), and a nest-shaped stirring paddle (54) welded on the bottom of the stirring paddle (5), and circumferential stirring paddles (55) are respectively vertically welded at both ends of the scraping stirring paddle (53); a flange is installed at the upper end of the stirring shaft (51), and the flange is connected to the main shaft by bolts, and the main shaft is connected to a worm gear reduction explosion-proof motor (3) by a coupling.

2. The hydraulic self-locking high-viscosity material stirring pneumatic conveying device according to claim 1 is characterized in that: A stirring tank cover is arranged above the stirring tank body (2), and a worm gear reduction explosion-proof motor (3) is fixed on a supporting flange of the stirring tank cover by means of bolts.

3. The hydraulic self-locking high-viscosity material stirring pneumatic conveying device according to claim 2 is characterized in that: There is a static seal between the stirring tank body (2) and the stirring tank cover.

4. The hydraulic self-locking high-viscosity material stirring pneumatic conveying device according to claim 2 or 3, characterized in that: The compressed air electromagnetic valve (7) is connected to the stirring tank cover through threads, and the digital pressure sensor (8) is connected to the stirring tank cover through threads.

5. The hydraulic self-locking high-viscosity material stirring pneumatic conveying device according to claim 1 is characterized in that: The liquid feed ball valve (1) is installed at the inlet pipe located at the tank cover through a pipe thread, and the discharge ball valve (6) is connected to the air pipe installed at the bottom of the stirring tank body (2) through a quick plug connector.

6. The hydraulic self-locking high-viscosity material stirring pneumatic conveying device according to claim 1 is characterized in that: A plurality of diamond-shaped reinforcing ribs (52) are uniformly welded between the flange and the recessed stirring paddle (54), and a middle stirring paddle (56) is welded between the reinforcing ribs (52).

7. The hydraulic self-locking high-viscosity material stirring pneumatic conveying device according to claim 1 is characterized in that: The scraping stirring paddle (53) is an I-beam welded to the stirring shaft (51), and its welding direction is perpendicular to the stirring shaft (51).

8. The hydraulic self-locking high-viscosity material stirring pneumatic conveying device according to claim 7 is characterized in that: The edge of the circumferential stirring blade (55) is wrapped with polyurethane soft material.

9. The hydraulic self-locking high-viscosity material stirring pneumatic conveying device according to claim 1 is characterized in that: The cross section of the blade of the socket-shaped stirring paddle (54) is triangular.

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