Buffer defoaming tank for joint control of spraying and crushing
By using a buffer defoaming tank with integrated spray crushing, and combining spraying and stirring blades, efficient defoaming is achieved, solving the problem of foam being difficult to completely eliminate during flotation, reducing costs and improving production efficiency.
Patent Information
- Application Number
- CN202520324269.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing technologies cannot completely eliminate foam during the flotation process, resulting in low efficiency, high cost, and environmental pollution risks in flotation equipment. Traditional defoaming methods have limited efficiency or increase water waste.
The buffer defoaming tank with joint control spray breaking uses spray pipes to spray defoaming medium and combined with stirring blades to shear and break up bubbles. Sensors monitor the amount of foam and control the spraying operation to achieve efficient defoaming.
It improves defoaming effect, reduces production costs, reduces the use of chemical media, and improves the production efficiency and continuity of the mineral processing process.
Smart Images
Figure CN223930760U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to coal floatation process defoaming technical field, concretely relates to a buffer defoaming tank of joint control spray crushing. BACKGROUND
[0002] The flotation process is to use the difference of physical and chemical properties of the mineral surface to make the target mineral selectively adhere to the bubble, so as to realize the separation from the gangue mineral. In the flotation process, the ore, water and flotation reagent are mixed, stirred and aerated, a large amount of stable foam is formed, which helps to carry the target mineral to float to the surface of the slurry for collection, but too much and difficult to dissipate foam will occupy a large space in the flotation tank, reduce the effective volume utilization rate of the flotation equipment, limit the slurry treatment capacity, and further affect the production efficiency of the whole beneficiation process. The existence of a large amount of foam may also cause the overflow, pipeline and equipment blockage and other problems in the subsequent transportation, concentration and filtration of the flotation concentrate, increase the equipment maintenance cost and downtime, and reduce the production continuity.
[0003] The traditional defoaming method includes mechanical defoaming method and chemical defoaming method. The mechanical defoaming method mainly uses mechanical devices such as defoaming paddle to break the foam, but the defoaming effect of this method is limited and some stubborn foam is difficult to completely eliminate. The chemical defoaming method is to add defoaming agent to destroy the stability of the foam, but it increases the production cost and the risk of environmental pollution. The current spray defoaming increases the water load of the system operation, and there is a certain waste of water resources. Therefore, it is of great significance to design a high-efficiency flotation bubble defoaming equipment. UTILITY MODEL CONTENT
[0004] The utility model aims at solving the low efficiency, high cost and other deficiencies in the prior art, and provides a buffer defoaming tank of joint control spray crushing.
[0005] To solve the above technical problems, the utility model adopts the technical scheme of a buffer defoaming tank of joint control spray crushing, which comprises a tank body, an inlet is arranged on the upper end side wall of the tank body, a liquid outlet is arranged at the bottom of the tank body, and an exhaust port is arranged at the top end of the tank body; a sieve plate is installed in the tank body in an inclined manner and is located below the inlet of the tank body; a spray pipe is installed on the inner top of the tank body and is connected with an external water inlet pipe for conveying and spraying defoaming medium; a stirring shaft and a stirring blade are coaxially installed on the stirring shaft and are located below the sieve plate; the stirring shaft passes through the sieve plate and the top end of the tank body in sequence and is rotationally connected with the top end of the tank body, and the top end of the stirring shaft is drivingly connected with a driving motor.
[0006] Further, a sensor is fixedly installed on the inner side wall of the tank body and located at the lowest position of the sieve plate, and is signal-connected to the PLC control module; a control valve is further installed on the water inlet pipe and is also connected to the PLC control module.
[0007] Further, the inclination of the sieve plate is 30°, and the highest position of the sieve plate is installed at the bottom end of the feed inlet of the tank body; the sieve hole diameter of the sieve plate is 10-20 mm.
[0008] Further, the installation position of the spray pipe is higher than the feed inlet of the tank body, the bottom of the spray pipe is provided with a spray hole, the diameter of the spray pipe is 10 mm, and the water inlet pressure is 0.2 MPa.
[0009] Further, the stirring shaft is located on the vertical central axis of the tank body, the matrix arrangement mode is adopted for the stirring blades installed on the stirring shaft, and the stirring diameter below is greater than that above in sequence.
[0010] Further, when the sensor monitors that the material is accumulated or the foam amount is too large at the lowest position of the sieve plate, a signal feedback is transmitted to the PLC control module, and the PLC control module controls the control valve on the water inlet pipe to be opened for 30 s to perform the spraying and cleaning operation.
[0011] Preferably, the defoaming medium in the spray pipe is water.
[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model has the simple structure, can preliminarily break the foam through the spraying mode, further cuts and breaks the small bubbles flowing down through the driving stirring blade, the overall defoaming effect is improved, can deal with some stubborn foam which is difficult to eliminate completely, reduces the input pollution of other chemical media, reduces the production cost, and further improves the production efficiency of the whole beneficiation process. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the whole structure schematic view of the utility model;
[0014] In the drawing: 1, tank body, 2, sieve plate, 3, spray pipe, 4, water inlet pipe, 5, stirring shaft, 6, stirring blade, 7, driving motor, 8, sensor, 9, PLC control module, 10, control valve, 11, feed inlet, 12, liquid outlet, 13, gas outlet. DETAILED DESCRIPTION
[0015] It should be noted that in the description of this utility model, terms such as "upper", "lower", "inner", "outer", "top", "bottom", "side wall", "inclined", and "coaxial" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are only used to facilitate the description of the structural relationship between the components in this utility model and do not specifically mean that any component in this utility model must have a specific orientation, be constructed and operated in a specific orientation, or be construed as a limitation on this utility model.
[0016] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting," etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:
[0018] like Figure 1 As shown, a buffer defoaming tank for joint control spray crushing includes a tank body 1, which is a vertically arranged columnar tank. The upper end of the tank body 1 has a feed inlet 11 that connects to its interior on its side wall. The bottom center of the tank body 1 has a drain outlet 12 that connects to its interior. The top of the tank body 1 also has an exhaust outlet 13 that connects to the outside.
[0019] The sieve plate 2 is detachably and fixedly installed inside the tank body 1 in an inclined shape with an inclination slope of 30°. The highest point of the sieve plate 2 is located at the lowest end of the feed inlet 11 of the tank body 1 to ensure that the feed is always above the sieve plate 2. The diameter of the sieve holes on the sieve plate 2 can be selected from 10 to 20 mm to intercept large air bubbles as much as possible during the downward flow of the feed.
[0020] A spray pipe 3 is horizontally fixed to the inner top of the tank body 1, installed above the feed inlet 11 of the tank body 1. Its water inlet end extends out of the tank body 1 and connects to an external water inlet pipe 4, with a relative seal. It is used to transport and spray the defoaming medium (water). The diameter of the water inlet pipe 4 is 50mm, and the diameter of the spray pipe 3 is 10mm. Its inlet pressure is 0.2MPa to ensure sufficient spray water volume and pressure. Several spray heads are evenly spaced at the bottom of the spray pipe 3, and their cross-spray area can cover the entire inner diameter area of the tank body 1. A control valve 10 is also installed on the water inlet pipe 4, and its signal or wiring is connected to the PLC control module 9.
[0021] The stirring shaft 5 is located on the vertical central axis of the tank body 1, the upper end of the stirring shaft 5 penetrates the top central position of the tank body 1 upwards, and the stirring shaft 5 is rotationally connected with the tank body 1, the upper end of the stirring shaft 5 is drivingly connected to the output end of the external driving motor 7 installed on the top end of the tank body 1, and the stirring shaft 5 is driven to rotate by the driving motor 7; the lower end of the stirring shaft 5 penetrates the sieve plate 2 downwards, the stirring blades 6 are coaxially fixed to the lower end of the stirring shaft 5, and the stirring blades 6 are arranged in a matrix mode and are all located below the sieve plate 2, and the diameters of the stirring blades 6 from top to bottom are gradually increased.
[0022] Further, the sensor 8 is fixedly installed on the inner side wall of the tank body 1 and is located at the lowest position of the sieve plate 2, can monitor the material state at the lowest position of the sieve plate 2 in real time, and is signal-connected to the PLC control module 9, when the material is accumulated or the foam is too large at the lowest position of the sieve plate 2, the sensor 8 transmits a signal feedback to the PLC control module 9, and the PLC control module 9 controls the control valve 10 on the water inlet pipe 4 to be opened for 30 seconds to perform the spraying and cleaning operation.
[0023] Specific working principles are as follows: the incoming material enters the inside of the tank body 1 through the feeding port 11, flows downwards along the sieve surface of the inclined sieve plate 2, at this time, the small bubbles penetrate the sieve holes downwards with the incoming material, and the large-size bubbles are partially accumulated on the upper surface of the sieve plate 2 or are accumulated at the lowest position of the sieve plate 2, the sensor 8 at the lowest position of the sieve plate 2 monitors the accumulation of the material and the foam at the lowest position of the sieve plate 2 in real time, when the material is accumulated or the foam is too large, the sensor 8 transmits a signal feedback to the PLC control module 9, the control valve 10 on the water inlet pipe 4 is controlled to be opened for 30 seconds by the PLC control module 9, and the spraying pipe 3 performs the spraying and cleaning operation, so that the large-size bubbles are preliminarily broken and the cleaning effect of the sieve plate 2 is achieved, and the small bubbles generated after the breaking further penetrate the sieve plate 2 downwards. At this time, the stirring shaft 5 and the stirring blades 6 are driven to rotate at high speed by the driving motor 7, the small bubbles penetrating the sieve are further broken and eliminated by the rotary shearing action of the blade matrix. The broken gas is discharged upwards through the gas discharge port 13, and the solid-liquid mixed material after the defoaming and breaking is thrown to the inner side wall of the tank body 1 under the action of the rotary inertia, and is discharged downwards along the wall surface through the liquid discharge port 12 at the bottom.
[0024] Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples, and the changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the present application should also belong to the protection scope of the present application.
Claims
1. A buffer defoaming tank for controlled spray crushing, characterized in that: The container includes a tank body, with a feed inlet on the upper side wall, a drain outlet at the bottom, and an exhaust outlet at the top. A sieve plate is installed at an angle inside the tank, located below the tank's feed inlet; A spray pipe is installed at the top inside the tank and connected to an external water inlet pipe for conveying and spraying defoaming medium. The stirring shaft and stirring blades are coaxially mounted on the stirring shaft and are both located below the sieve plate. The stirring shaft passes upward through the sieve plate and the top of the tank in sequence, and is rotatably connected to the top of the tank. The top of the stirring shaft is driven to the drive motor.
2. The buffer defoaming tank for controlled spray crushing according to claim 1, characterized in that: A sensor is fixedly installed on the inner wall of the tank, located at the lowest position of the sieve plate, and the signal is connected to the PLC control module; a control valve is also installed on the water inlet pipe, and the control valve is also connected to the PLC control module.
3. The buffer defoaming tank for controlled spray crushing according to claim 1, characterized in that: The sieve plate has an inclination slope of 30°, and its highest position is installed at the bottom of the feed inlet of the tank; the diameter of the sieve holes on the sieve plate is 10-20mm.
4. The buffer defoaming tank for controlled spray crushing according to claim 1, characterized in that: The spray pipe is installed higher than the feed inlet of the tank, and has spray holes at its bottom. The diameter of the spray pipe is 10mm and the water pressure is 0.2MPa.
5. The buffer defoaming tank for controlled spray crushing according to claim 1, characterized in that: The stirring shaft is located on the vertical central axis of the tank, and the stirring blades installed on it are arranged in a matrix, with the stirring diameter of the lower blades being larger than that of the upper blades.
6. The buffer defoaming tank for controlled spray crushing according to claim 2, characterized in that: When the sensor detects material accumulation or excessive foam at the lowest point of the screen plate, it sends a signal to the PLC control module. The PLC control module then controls the control valve on the water inlet pipe to open for 30 seconds to perform spraying and cleaning operations.
7. The buffer defoaming tank for controlled spray crushing according to claim 1, characterized in that: The defoaming medium in the spray pipe is water.