A high-precision liquid feeding device for mineral flotation

Abstract

The present invention relates to a high-precision liquid medicine feeding device for mineral flotation, and belongs to the technical field of mineral processing equipment. It includes a medicine storage barrel, a constant pressure tank, a mounting platform, a pneumatic valve, a medicine outlet, and a flow limiter; a guide rod is installed on the mounting platform, a constant pressure tank is installed on the guide rod, and a pressure spring is provided on the guide rod; a valve body is provided on the side of the constant pressure tank, a valve cavity is provided in the valve body, one end of the valve cavity is connected to the medicine storage barrel through a pipeline, and the other end extends to the top of the constant pressure tank through the pipeline. The present invention limits the flow rate of the liquid medicine supply to be constant through the flow limiter, and then controls the opening time of the pneumatic valve, thereby realizing the precise supply of the liquid medicine, with a simple structure and convenient maintenance; at the same time, by maintaining the stability of the liquid level in the constant pressure tank, when the relative position of the flow limiter and the constant pressure tank is fixed, the stability of the pressure upstream of the flow limiter is guaranteed, the influence of different pressures on the flow limiting effect of the flow limiter is reduced, and the stability of the liquid medicine supply flow rate is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of ore dressing equipment, and in particular relates to a high-precision liquid feeding device for ore flotation. Background Art

[0002] Flotation is the most widely used mineral processing method. The reagent system of the flotation process is one of the important factors affecting the flotation process. There are many devices for adding water-soluble reagents, such as solenoid valves, gear pumps, etc. The solenoid valve dosing needs to be used with a high-precision flow meter. Since the liquid medicine is corrosive, the flow meter needs to be replaced regularly to ensure the accuracy of the dosing amount, and the cost of use is relatively high. The dosing action of the metering pump is a pulsating dosing, which will cause vibration of the pipeline and the metering pump itself during the dosing process. This vibration can easily cause damage to the metering pump, making the maintenance of the metering pump difficult and costly. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a high-precision liquid feeding device for mineral flotation, which has a simple structure, is easy to maintain, and effectively reduces the cost of liquid feeding.

[0004] To achieve the above object, the present invention is implemented according to the following technical scheme:

[0005] The high-precision liquid medicine feeding device for mineral flotation comprises a medicine storage barrel, a constant pressure tank, a mounting platform, a pneumatic valve, a medicine outlet, and a flow restrictor; a guide rod is fixedly installed on the front side of the mounting platform, a constant pressure tank that can move up and down is slidably installed on the guide rod, and a pressure-bearing spring located below the constant pressure tank is provided on the guide rod; a valve body is provided on the side of the constant pressure tank, a valve cavity is provided in the valve body, one end of the valve cavity is connected to the medicine storage barrel through a pipeline, and the other end extends to the top of the constant pressure tank through the pipeline, a valve core is slidably installed in the valve cavity, a valve stem is provided on the valve core, a rectangular through hole is provided on the valve stem, and a reset spring is provided on the valve stem; a shift rod is rotatably installed on the side of the constant pressure tank, one end of the shift rod extends to the bottom of the constant pressure tank, and the other end is inserted into the through hole.

[0006] Furthermore, the flow limiter comprises a flow limiting tube, an orifice plate and a flange; flanges are provided at both ends of the flow limiting tube, an orifice plate is provided in the flow limiting tube, and a flow limiting hole is provided on the orifice plate.

[0007] Preferably, a downflow pipe is vertically installed in the medicine outlet, and an opening is opened along the pipeline of the downflow pipe.

[0008] Furthermore, the orifice plate is provided with a plurality of flow limiting holes of different aperture sizes, which are evenly spaced around the center of the orifice plate; a hole-shielding component is rotatably installed in the flow limiting tube, and the hole-shielding component is provided with a discharge hole corresponding to the maximum flow limiting hole.

[0009] Furthermore, the hole-shielding component is in an oblique cone shape, the inner diameter of the large diameter end is the same as the inner diameter of the flow limiting tube, and the inner diameter of the small diameter end is the same as the diameter of the maximum flow limiting hole.

[0010] Furthermore, a tubular clamp is eccentrically arranged on the flow limiting tube, a groove is arranged in the clamp, and a brim matching the groove is arranged at the large diameter end of the hole-covering component, and the brim partially protrudes from the clamp.

[0011] Furthermore, a rotatable adjusting tube is sleeved on the outer periphery of the clamping member, and the adjusting tube is transmission-connected to the brim gear.

[0012] Preferably, the regulating tube is provided with a scale.

[0013] Preferably, the constant pressure tank and the medicine outlet are respectively covered with transparent covers.

[0014] Preferably, the lower half of the guide rod is a threaded section, and an adjusting nut located below the pressure spring is threadedly screwed on the threaded section.

[0015] Preferably, the lower half of the guide rod is a threaded section, and an adjusting nut located below the pressure spring is threadedly screwed on the threaded section.

[0016] Beneficial effects of the present invention:

[0017] The present invention limits the flow rate of the medicine supply to be constant through the flow limiter, and then controls the opening time of the pneumatic valve to achieve accurate supply of the medicine, with a simple structure and convenient maintenance. At the same time, by maintaining the stability of the liquid level in the constant pressure tank, when the relative position of the flow limiter and the constant pressure tank is fixed, the stability of the pressure upstream of the flow limiter is guaranteed, the influence of different pressures on the flow limiting effect of the flow limiter is reduced, and the stability of the medicine supply flow rate is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. It is obvious that the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 is a schematic cross-sectional view of the current limiter of the present invention;

[0021] Figure 3 It is a schematic diagram of the front view of the orifice plate of the present invention;

[0022] Figure 4 This is a schematic diagram of the installation of the downcomer of the present invention;

[0023] Figure 5 This is a schematic diagram of the installation of the downcomer valve body of the present invention;

[0024] Figure 6 It is a cross-sectional schematic diagram of a downcomer valve body of the present invention;

[0025] In the figure, 1-medicine storage barrel, 2-constant pressure tank, 3-mounting table, 4-pneumatic valve, 5-drug outlet, 6-flow limiter, 6-1 flow limiting tube, 6-2 orifice plate, 6-3 flange, 6-4 flow limiting hole, 6-5 hole shielding member, 6-6 discharge hole, 6-7 clamping part, 6-8 groove, 6-9 brim, 6-10 regulating tube, 7-downflow tube, 8-transparent cover, 9-guide rod, 10-pressure spring, 11-valve body, 12-valve core, 13-valve stem, 14-reset spring, 15-dial rod, 16-adjusting nut. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and beneficial effects of the present invention more clear, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians.

[0027] Depend on Figure 1As shown, a guide rod 9 is fixedly installed on the front side of the mounting platform 3, and a constant-pressure groove 2 that can move up and down is slidably installed on the guide rod, and a pressure-bearing spring 10 is provided on the guide rod 9 and is located below the constant-pressure groove 2. A load-bearing steel plate is installed on the front side of the mounting platform 3 to support the vertical guide rod 9. Four guide holes are arranged from the bottom to the top on the four corners of the constant-pressure groove 2, and there are four guide rods 9, which respectively match the four guide holes on the constant-pressure groove 2, so that the constant-pressure groove 2 can slide in the vertical direction along the guide rod 9. The pressure-bearing spring 10 is arranged, and when the medicine liquid in the constant-pressure groove 2 changes, the constant-pressure groove 2 will move up and down; a valve body 11 is provided on the side of the constant-pressure groove 2, and a valve cavity is provided in the valve body 11. One end of the valve cavity is connected to the medicine storage barrel 1 through a pipeline, and the other end extends to the top of the constant-pressure groove 2 through a pipeline. A valve is provided on the connecting pipeline. When the constant-pressure groove 2 needs to be maintained or the equipment is shut down, the valve is closed and the valve core 12 is A valve stem 13 is provided, on which a rectangular through hole is provided, and on which a return spring 14 is provided; a lever 15 is rotatably installed on the side of the constant-pressure groove 2, one end of the lever 15 extends to the bottom of the constant-pressure groove 2, and the other end is inserted into the through hole. When the amount of liquid medicine in the constant-pressure groove 2 decreases, the overall mass of the constant-pressure groove 2 decreases, and under the action of the pressure-bearing spring 10, the constant-pressure groove 2 moves upward, and the valve stem 13 drives the valve core 12 to move to the left under the drive of the spring, opening the flow channel in the valve body 11, and the lever 15 rotates clockwise accordingly; when the amount of liquid medicine in the constant-pressure groove 2 increases, the overall mass of the constant-pressure groove 2 increases, and the constant-pressure groove 2 presses the return spring 10 downward to drive the lever 15 to rotate counterclockwise, and the lever 15 drives the valve stem 13 to move right, and the valve stem 13 drives the valve core 12 to move left, closing the flow channel in the valve body 11, reducing the speed of replenishing liquid medicine into the constant-pressure groove 2, thereby achieving the purpose of keeping the liquid level height in the constant-pressure groove 2 constant.

[0028] Preferably, the lower half of the guide rod is a threaded section, on which an adjusting nut located below the pressure spring is threadedly connected for adjusting the initial position of the constant pressure groove 2, making the installation of the lever 15 more convenient.

[0029] like Figure 2 As shown, the flow limiter 6 comprises a flow limiting tube 6-1, an orifice plate 6-2 and a flange 6-3; flanges 6-3 are provided at both ends of the flow limiting tube 6-1, an orifice plate 6-2 is provided inside the flow limiting tube 6-1, and a flow limiting hole 6-4 is provided on the orifice plate 6-2. The flow limiting tube 6-1 is installed on the pipeline through the flanges 6-3 at both ends, and is easy to install and disassemble. By utilizing the characteristics of the orifice plate 6-2, when the liquid level of the constant pressure tank 2 remains unchanged, the pressure upstream of the orifice plate 6-2 remains unchanged, and the flow rate flowing through the orifice plate 6-2 will be maintained at a certain value and will no longer increase, thereby achieving the purpose of maintaining a constant supply flow rate of the liquid medicine. The structure is simple, easy to process, low in manufacturing cost, and easy to install, which greatly reduces investment and operation and maintenance costs.

[0030] Preferably, the orifice plate 6-2 is provided with a plurality of flow limiting holes 6-4 of different aperture sizes, which are evenly spaced around the center of the orifice plate 6-2; a hole-covering component 6-5 is rotatably installed in the flow limiting tube 6-1, and the hole-covering component 6-5 is provided with a discharge hole 6-6 corresponding to the maximum flow limiting hole 6-4. When in use, the discharge hole 6-6 is made to coincide with the flow limiting holes 6-4 of different sizes by rotating the hole-covering component 6-5, and the other flow limiting holes 6-4 are blocked. By adopting the flow limiting holes 6-4 of different diameters, the purpose of regulating the flow rate is achieved.

[0031] Preferably, the hole-shielding component 6-5 is in the shape of an oblique cone, the inner diameter of the large diameter end is the same as the inner diameter of the flow limiting tube 6-1, and the inner diameter of the small diameter end is the same as the diameter of the maximum flow limiting hole 6-4, forming a truncated cone flow cavity upstream of the orifice plate 6-2, which effectively reduces the fluid resistance. When the liquid medicine passes through the hole-shielding component 6-5, it flows in from the large end face and flows out from the small end face, which has a flow limiting effect. At the same time, it reduces the direct impact of the liquid medicine on the orifice plate 6-2, reduces the loss of the orifice plate 6-2, effectively improves the service life of the orifice plate 6-2, effectively reduces the frequency of replacement and maintenance of the orifice plate 6-2, and reduces the use cost of the orifice plate 6-2.

[0032] Preferably, a tubular clamping piece 6-7 is eccentrically arranged on the flow limiting tube 6-1, and a groove 6-8 is arranged in the clamping piece 6-7. A brim 6-9 matching the groove 6-8 is arranged at the large diameter end of the hole-shielding component 6-5, and the brim 6-9 partially protrudes from the clamping piece 6-7. A sealing ring is arranged between the brim 6-9 and the clamping piece 6-7 to prevent the liquid medicine from flowing out from the gap between the clamping piece 6-7 and the brim 6-9, thereby enhancing the sealing performance of the flow limiter 6. By eccentrically arranging the clamping piece 6-7 and the brim 6-9, the middle and bottom parts of the clamping piece 6-7 completely wrap around the brim 6-9, while the top part of the brim 6-9 leaks out. The user can directly rotate the brim 6-9 by the protruding part of the brim 6-9, and the brim 6-9 drives the entire hole-shielding component 6-5 to rotate, so that the discharge hole 6-6 can correspond to different flow limiting holes 6-4.

[0033] Preferably, the outer periphery of the clamping member 6-7 is covered with a rotatable adjusting tube 6-10, and the adjusting tube 6-10 is connected to the brim 6-9 through gear transmission. By setting matching gear teeth on the inner wall of the adjusting tube 6-10 and the outer circumference of the brim 6-9, when the adjusting tube 6-10 is rotated, the hole-covering component 6-5 is driven to rotate by the gear teeth, and the appearance is more beautiful. At the same time, it is more convenient to rotate the hole-covering component 6-5. To facilitate the installation and disassembly of the hole-covering component 6-5, the clamping member 6-7 is separated into two halves from the middle, and the two halves of the clamping member 6-7 are clamped and connected to the two halves of the adjusting tube 6-10, and the two halves of the adjusting tube 6-10 are connected as a whole by screws.

[0034] Preferably, the regulating tube 6 - 10 is provided with scales, and different scales represent different flow holes corresponding to the discharge hole 6 - 6 , so that the staff can adjust the flow of the flow limiter 6 conveniently.

[0035] Preferably, a downflow pipe 7 is vertically installed in the medicine outlet 5, and an opening is opened along the pipeline of the downflow pipe 7. After the medicine liquid enters the medicine outlet 5, it is temporarily stored in the medicine outlet 5 and then flows out through the opening on the downflow pipe 7, thereby reducing the supply speed of the medicine liquid and allowing the medicine liquid to be slowly put in.

[0036] Preferably, the constant pressure tank 2 and the medicine outlet 5 are respectively covered with a transparent cover 8, and the constant pressure tank 2 and the medicine outlet 5 are covered by the transparent cover 8 to reduce the diffusion of the medicine liquid in the constant pressure tank 2 and the medicine outlet 5 into the air, improve the air quality of the surrounding environment, and at the same time, effectively prevent debris from falling into the medicine liquid and causing pollution.

[0037] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention; the dimensions of the drawings are independent of the specific objects, and the dimensions of the objects can be changed arbitrarily.

Claims

1. A high-precision liquid feeding device for mineral flotation, characterized in that: The high-precision liquid medicine feeding device for mineral material flotation comprises a medicine storage barrel (1), a constant pressure tank (2), a mounting platform (3), a pneumatic valve (4), a medicine outlet (5), and a flow restrictor (6); a guide rod (9) is fixedly mounted on the front side of the mounting platform (3), a constant pressure tank (2) that can move up and down is slidably mounted on the guide rod (9), and a pressure-bearing spring (10) located below the constant pressure tank (2) is provided on the guide rod (9); a valve body (11) is provided on the side of the constant pressure tank (2), and the valve body (1 1) is provided with a valve chamber, one end of the valve chamber is connected to the medicine storage barrel (1) through a pipeline, and the other end extends to the top of the constant pressure tank (2) through the pipeline, a valve core (12) is slidably installed in the valve chamber, a valve stem (13) is provided on the valve core (12), a rectangular through hole is provided on the valve stem (13), and a return spring (14) is provided on the valve stem (13); a lever (15) is rotatably installed on the side of the constant pressure tank (2), one end of the lever (15) extends to the bottom of the constant pressure tank (2), and the other end is inserted into the through hole; The flow limiter (6) comprises a flow limiting tube (6-1), an orifice plate (6-2), and a flange (6-3); flanges (6-3) are respectively provided at both ends of the flow limiting tube (6-1); an orifice plate (6-2) is provided inside the flow limiting tube (6-1); and a flow limiting hole (6-4) is provided on the orifice plate (6-2); The orifice plate (6-2) is provided with a plurality of flow limiting holes (6-4) of different aperture sizes, which are evenly spaced around the center of the orifice plate (6-2); a hole-shielding component (6-5) is rotatably mounted in the flow limiting tube (6-1), and a discharge hole (6-6) corresponding to the maximum flow limiting hole (6-4) is provided on the hole-shielding component (6-5); A tubular clamping piece (6-7) is eccentrically arranged on the flow limiting tube (6-1), a groove (6-8) is arranged in the clamping piece (6-7), and a brim (6-9) matching the groove (6-8) is arranged at the large diameter end of the hole-covering member (6-5), and the brim (6-9) partially protrudes from the clamping piece (6-7); The lower half of the guide rod (9) is a threaded section, and an adjusting nut (16) located below the pressure-bearing spring (10) is screwed onto the threaded section.

2. A high-precision liquid feeding device for mineral flotation according to claim 1, characterized in that: A downflow pipe (7) is vertically installed in the medicine outlet (5), and an opening is provided along the upper edge of the downflow pipe (7).

3. A high-precision liquid feeding device for mineral flotation according to claim 1, characterized in that: The hole-covering component (6-5) is in an oblique cone shape, the inner diameter of the large diameter end is the same as the inner diameter of the flow-limiting tube (6-1), and the inner diameter of the small diameter end is the same as the diameter of the maximum flow-limiting hole (6-4).

4. A high-precision liquid feeding device for mineral flotation according to claim 1, characterized in that: The outer periphery of the clamping member (6-7) is covered with a rotatable adjusting tube (6-10), and the adjusting tube (6-10) is connected to the brim (6-9) via a gear transmission.

5. A high-precision liquid feeding device for mineral flotation according to claim 4, characterized in that: The regulating tube (6-10) is provided with a scale.

6. A high-precision liquid feeding device for mineral flotation according to claim 5, characterized in that: The constant pressure tank (2) and the medicine outlet (5) are respectively covered with transparent covers (8).

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