A spray rod and lithium iron manganese phosphate slurry atomization method

Abstract

A spray rod and a method for atomizing lithium iron manganese phosphate slurry, the spray rod comprises an air inlet rod, a liquid inlet rod, an inner nozzle and an outer nozzle; the air inlet rod is a hollow rod with a sealed upper end and an open lower end, the outer nozzle is connected to the lower end of the air inlet rod, and an air inlet is provided on the side wall of the air inlet rod; the liquid inlet rod is a hollow tube that passes through from top to bottom, and the inner nozzle is connected to the lower end of the liquid inlet rod; the liquid inlet rod is arranged inside the air inlet rod, and the upper end of the liquid inlet rod passes through the upper end of the air inlet rod; the liquid inlet rod can move up and down inside the air inlet rod so that the inner nozzle can extend out of the outer nozzle; a gas rotating mechanism is arranged inside the air inlet rod, and the gas rotating mechanism is used to make the gas entering the air inlet rotate spirally around the liquid inlet rod from top to bottom, and send the gas from the air inlet to the outer nozzle. The spray rod can realize the rapid switching between the internal mixing type and the external mixing type, and ensure sufficient atomization. At the same time, the method for atomizing lithium iron manganese phosphate slurry of the present invention utilizes the spray rod of the present invention, and can avoid the blockage of the spray rod.

Description

Technical Field

[0001] The invention relates to the field of spray rods, in particular to a spray rod and a method for atomizing lithium manganese iron phosphate slurry. Background Art

[0002] The two-fluid spray rods used in existing experimental equipment are divided into internal mixing type and external mixing type.

[0003] like Figure 1 As shown, the internal mixing spray rod includes an air inlet rod 2, a liquid inlet rod 4, an inner nozzle 5 and an outer nozzle 6; the air inlet rod 2 is a hollow rod with a sealed upper end and an open lower end, the outer nozzle 6 is connected to the lower end of the air inlet rod 2, and an air inlet 3 is provided on the side wall of the air inlet rod 2; a liquid inlet 1 is provided at the upper end of the air inlet rod 2; the liquid inlet rod 4 is a hollow tube that passes through from top to bottom, and the inner nozzle 5 is connected to the lower end of the liquid inlet rod 4; the liquid inlet rod 4 is arranged in the air inlet rod 2, the upper end of the liquid inlet rod 4 is connected to the liquid inlet 1, and the inner nozzle 5 at the lower end of the liquid inlet rod 4 is located in the outer nozzle 6.

[0004] like Figure 2 As shown, the external mixing spray bar is similar in structure to the internal mixing spray bar, except that the outlet of the inner nozzle 5 is flush with or extends out of the outer nozzle 6. The outlet of the outer nozzle is larger than the outlet of the inner nozzle, ensuring that there is an air outlet gap between the outer nozzle and the inner nozzle.

[0005] In the internal mixing spray rod, the liquid and gas are mixed in the outer nozzle and then sprayed out from the outer nozzle outlet, while in the external mixing spray rod, the liquid and gas are mixed again after being sprayed out of the outer nozzle. The internal mixing spray rod has better atomization effect and higher energy utilization efficiency, but when the liquid is some slurry, the internal mixing spray rod is more likely to be blocked. Therefore, during the experiment, different types of spray rods need to be selected according to different needs, and then the liquid inlet and the air inlet are connected to the liquid delivery pipe and the air delivery pipe respectively. However, it is very inconvenient to change the type of spray rod in the middle, and the original spray rod needs to be removed from the liquid delivery pipe and the air delivery pipe. There is no way to achieve quick switching, and the operation is troublesome. In addition, the existing spray rod has the problem of insufficient atomization. At the same time, when the liquid is lithium iron manganese phosphate slurry, the existing lithium iron manganese phosphate slurry atomization method is prone to cause the spray rod to be blocked.

[0006] Therefore, it is particularly necessary to provide a spray rod that can quickly switch the type of spray rod to ensure sufficient atomization effect; and to provide a new lithium iron manganese phosphate slurry atomization method to solve the problem that the spray rod is easily blocked. Summary of the invention

[0007] The purpose of the present invention is to provide a spray rod and a method for atomizing lithium iron manganese phosphate slurry in view of the above-mentioned existing problems, wherein the spray rod can realize rapid switching between internal mixing type and external mixing type to ensure sufficient atomization. At the same time, the method for atomizing lithium iron manganese phosphate slurry of the present invention can ensure sufficient atomization of lithium iron manganese phosphate slurry and avoid clogging of the spray rod.

[0008] The technical solution adopted by the present invention is as follows:

[0009] A spray rod comprises an air inlet rod, a liquid inlet rod, an inner nozzle and an outer nozzle;

[0010] The air intake rod is a hollow rod with a sealed upper end and an open lower end. The outer nozzle is connected to the lower end of the air intake rod, and an air intake port is provided on the side wall of the air intake rod.

[0011] The liquid inlet rod is a hollow tube that runs through from top to bottom, and the inner nozzle is connected to the lower end of the liquid inlet rod;

[0012] The liquid inlet rod is arranged in the air inlet rod, and the upper end of the liquid inlet rod penetrates the upper end of the air inlet rod; the liquid inlet rod can move up and down in the air inlet rod, so that the inner nozzle can extend out of the outer nozzle;

[0013] A gas rotating mechanism is arranged inside the air inlet rod, and the gas rotating mechanism is used to make the gas entering the air inlet port spirally rotate around the liquid inlet rod from top to bottom, and send the gas from the air inlet port to the outer nozzle.

[0014] Furthermore, the gas rotation mechanism includes a hollow cylinder, which is fixedly arranged in the air inlet rod and movably mounted on the liquid inlet rod, and the outer wall of the cylinder is in contact with the inner wall of the air inlet rod; a spiral groove extending from top to bottom around the cylinder is opened on the outer wall of the cylinder; the spiral groove at the lower end of the cylinder is connected to the interior of the outer nozzle; the air inlet is arranged at the upper part of the air inlet rod, and the air inlet is connected to the spiral groove at the upper part of the cylinder.

[0015] Furthermore, an adjusting rod is arranged above the air intake rod; a liquid intake rod fixing mechanism is arranged on the adjusting rod; the adjusting rod is a hollow tube penetrating from top to bottom, and the lower end of the adjusting rod is connected to the upper end of the air intake rod; the upper end of the liquid intake rod extends into the adjusting rod; the liquid intake rod fixing mechanism is used to fix the liquid intake rod and limit the up and down movement of the liquid intake rod.

[0016] Furthermore, the liquid inlet rod fixing mechanism includes a fixing mechanism 1 and a fixing mechanism 2;

[0017] A clamping mechanism is provided on the liquid inlet rod; the fixing mechanism 1 and the fixing mechanism 2 are both provided at the upper end of the adjusting rod, the fixing mechanism 1 and the fixing mechanism 2 are arranged at an interval, and the fixing mechanism 1 is located above the fixing mechanism 2; the fixing mechanism 1 and the fixing mechanism 2 cooperate with the clamping mechanism to limit the up and down movement of the liquid inlet rod; when the clamping mechanism is located at the first fixing mechanism, the inner nozzle is located in the outer nozzle; when the clamping mechanism is located at the second fixing mechanism, the outlet of the inner nozzle is flush with the outlet of the outer nozzle.

[0018] Furthermore, the fixing mechanism 1 and the fixing mechanism 2 have the same structure, and both include a top block and a top block spring; in the radial direction of the adjusting rod, a top block mounting groove is opened on the side wall of the adjusting rod, the entrance of the top block mounting groove is located at the inner wall of the adjusting rod, and the bottom of the top block mounting groove is close to the outer wall of the adjusting rod;

[0019] The top block is slidably arranged in the top block mounting groove and is located at the entrance of the top block mounting groove. The height of the top block matches the height of the top block mounting groove. The top block spring is arranged in the top block mounting groove. The front end of the top block spring contacts or is connected to the rear end of the top block, and the rear end of the top block spring contacts or is connected to the bottom of the top block mounting groove. The top block spring pushes the top block to move in the top block mounting groove along the radial direction of the adjusting rod, so as to push the front end of the top block out of the top block mounting groove. The front end face of the top block is inclinedly arranged, and in the radial direction of the adjusting rod, the top length of the top block is smaller than the bottom length of the top block. The clamping mechanism includes an upper shoulder and a lower shoulder arranged on the liquid inlet rod. The upper shoulder and the lower shoulder are arranged at intervals so that the gap between the upper shoulder and the lower shoulder forms a clamping groove. The upper shoulder is a conical shoulder with a small upper portion and a large lower portion, and the maximum diameter of the upper shoulder is larger than the maximum diameter of the lower shoulder.

[0020] The front end of the top block is used to be inserted into the clamping groove to limit the up and down movement of the liquid inlet rod.

[0021] Furthermore, a top block limiting rod is arranged in the top block mounting groove, the front end of the top block limiting rod is connected to the rear end of the top block, the rear end of the top block limiting rod passes through the bottom of the top block mounting groove, and a limiting shoulder is also arranged on the outer edge of the rear end of the top block limiting rod, and the limiting shoulder is located outside the adjusting rod; the diameter of the limiting shoulder is smaller than the height of the top block, the top block spring is sleeved on the top block limiting rod, and the top block limiting rod can move in the top block mounting groove along the radial direction of the adjusting rod.

[0022] Furthermore, a liquid inlet rod reset spring is arranged inside the adjusting rod; a reset shaft shoulder is arranged on the liquid inlet rod, and the reset shaft shoulder is located below the clamping mechanism; the liquid inlet rod reset spring is sleeved outside the liquid inlet rod, the upper end of the liquid inlet rod reset spring is in contact with or connected to the lower end of the reset shaft shoulder, and the lower end of the liquid inlet rod reset spring is in contact with or connected to the top of the air inlet rod.

[0023] Furthermore, the lower end of the adjusting rod is connected to the upper end of the air intake rod through an adjusting nut, the outer wall of the adjusting rod is threadedly connected to the upper end of the adjusting nut, and the upper end of the air intake rod is threadedly connected to the lower end of the adjusting nut;

[0024] Or the lower end of the adjusting rod is connected to the upper end of the air intake rod through an adjusting screw; an adjusting rod connecting shoulder is provided on the outer wall of the lower end of the adjusting rod, and an adjusting screw connecting shoulder is provided on the inner wall of the upper end of the adjusting screw; the upper end of the adjusting screw is sleeved outside the adjusting rod, and the adjusting rod connecting shoulder is located below the adjusting screw connecting shoulder; the lower end of the adjusting screw is threadedly connected to the upper end of the air intake rod; a compression spring is provided in the adjusting screw, and the compression spring is sleeved outside the liquid inlet rod, the upper end of the compression spring is in contact with or connected to the adjusting rod connecting shoulder, and the lower end of the compression spring is in contact with or connected to the top of the air intake rod.

[0025] Furthermore, a one-way valve is provided at the upper end of the liquid inlet rod.

[0026] The present invention also discloses a method for atomizing lithium iron manganese phosphate slurry based on the above-mentioned spray rod, the method comprising:

[0027] Control the liquid inlet rod to move downward so that the inner nozzle extends out of the outer nozzle, and the distance between the inner nozzle outlet and the outer nozzle outlet is 0.1~0.5cm;

[0028] The metal impurities in the lithium iron manganese phosphate slurry are removed by a demagnetizer;

[0029] The large particle agglomerates in the lithium iron manganese phosphate slurry are filtered through a fluororubber filter;

[0030] Stirring the lithium iron manganese phosphate slurry in the storage tank;

[0031] The lithium iron manganese phosphate slurry in the storage tank is delivered to the liquid inlet rod of the spray rod through a pumping pipeline, and the gas is introduced into the air inlet of the spray rod; wherein the ratio of the gas mass flow rate to the lithium iron manganese phosphate slurry mass flow rate is 5:1; and the flow rate of the gas is 22-40 m / s;

[0032] During pumping, the pumping pipeline should be insulated to maintain the temperature of the pumping pipeline at 12°C.

[0033] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0034] In the present invention, since the liquid inlet rod can move up and down in the gas inlet rod, the positions of the inner nozzle and the outer nozzle can be adjusted, so that the inner nozzle is located in the outer nozzle to form an inner mixing type spray rod, or the outlet of the inner nozzle is flush with the outlet of the outer nozzle or extends out of the outer nozzle to form an outer mixing type spray rod. The gas rotation mechanism rotates the gas, which can form a shear force, disperse the liquid, and is more conducive to sufficient atomization.

[0035] The spray rod of the present invention can realize the rapid switching between the internal mixing type and the external mixing type according to actual needs, and is more convenient to use than the existing internal mixing type and external mixing type spray rods. At the same time, due to the existence of the gas rotating mechanism, sufficient atomization can be ensured.

[0036] The lithium iron manganese phosphate slurry atomization method of the present invention utilizes the spray rod of the present invention, and can avoid clogging of the spray rod during the atomization process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The structure diagram of the existing internal mixing spray rod is shown below;

[0038] Figure 2 The structure diagram of the existing external mixing spray rod is shown below;

[0039] Figure 3 It is a structural diagram of the present invention;

[0040] Figure 4 It is a position relationship diagram of the clamping mechanism and the liquid inlet rod fixing mechanism;

[0041] Figure 5 It is an enlarged view of the clamping mechanism and the liquid inlet rod fixing mechanism;

[0042] Figure 6 This is the structural diagram of the adjusting screw tube;

[0043] In the figure, 1-liquid inlet, 2-air inlet rod, 3-air inlet, 4-liquid inlet rod, 5-inner nozzle, 6-outer nozzle, 7-one-way valve, 8-adjusting rod, 9-adjusting screw, 10-fixing mechanism two, 11-fixing mechanism one, 12-gas rotating mechanism, 13-clamping mechanism, 14-liquid inlet rod reset spring, 15-compression spring, 16-adjusting rod connecting shoulder, 17-adjusting screw connecting shoulder, 18-reset shoulder, 101-top block spring, 102-top block limiting rod, 103-top block, 104-limiting shoulder, 131-upper shoulder, 132-lower shoulder. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] like Figure 3~Figure 6As shown, the present invention discloses a spray rod, which includes an air inlet rod 2, a liquid inlet rod 4, an inner nozzle 5, and an outer nozzle 6; the air inlet rod 2 is a hollow rod with a sealed upper end and an open lower end, the outer nozzle 6 is connected to the lower end of the air inlet rod 2, and an air inlet 3 is opened on the side wall of the air inlet rod 2; the liquid inlet rod 4 is a hollow tube that passes through from top to bottom, and the inner nozzle 5 is connected to the lower end of the liquid inlet rod 4; the liquid inlet rod 4 is arranged in the air inlet rod 2, and the upper end of the liquid inlet rod 4 passes through the upper end of the air inlet rod 2; the liquid inlet rod 4 can move up and down in the air inlet rod 2, so that the inner nozzle 5 can extend out of the outer nozzle 6; a gas rotating mechanism 12 is arranged in the air inlet rod 2, and the gas rotating mechanism 12 is used to make the gas entering the air inlet 3 spirally rotate around the liquid inlet rod from top to bottom, and send the gas from the air inlet to the outer nozzle 6.

[0051] In the above structure, since the liquid inlet rod 4 can move up and down in the gas inlet rod 2, the positions of the inner nozzle 5 and the outer nozzle 6 can be adjusted, so that the inner nozzle 5 is located in the outer nozzle 6 to form an inner mixing spray rod, or the outlet of the inner nozzle 5 is flush with the outlet of the outer nozzle 6 or extends out of the outer nozzle 6 to form an outer mixing spray rod. The gas rotation mechanism rotates the gas, which can form a shear force, disperse the liquid, and is more conducive to sufficient atomization.

[0052] The spray rod of the present invention can realize the rapid switching between the internal mixing type and the external mixing type according to actual needs, and is more convenient to use than the existing internal mixing type and external mixing type spray rods. At the same time, due to the existence of the gas rotating mechanism, sufficient atomization can be ensured.

[0053] Further, such as Figure 3 As shown, the gas rotating mechanism 12 includes a hollow column, which is fixedly arranged in the air inlet rod 2 and movably sleeved on the liquid inlet rod 4. The liquid inlet rod 4 can move up and down in the column, and the outer wall of the column contacts the inner wall of the air inlet rod 2; a spiral groove extending from top to bottom around the column is provided on the outer wall of the column; the spiral groove at the lower end of the column is connected to the inside of the outer nozzle 6; the air inlet 3 is arranged at the upper part of the air inlet rod 2, and the air inlet 3 is connected to the spiral groove at the upper part of the column. The notch width of the spiral groove is greater than or equal to the outlet width of the air inlet 3.

[0054] Furthermore, an adjusting rod 8 is provided above the air intake rod 2; a liquid intake rod fixing mechanism is provided on the adjusting rod 8; the adjusting rod 8 is a hollow tube penetrating from top to bottom, and the lower end of the adjusting rod 8 is connected to the upper end of the air intake rod 2; the upper end of the liquid intake rod 4 extends into the adjusting rod 8; the liquid intake rod fixing mechanism is used to fix the liquid intake rod 4 and limit the up and down movement of the liquid intake rod 4.

[0055] When the liquid inlet rod 4 extends upward too long, it is easy to break. The adjusting rod 8 can protect the liquid inlet rod 4. At the same time, due to the existence of the liquid inlet rod fixing mechanism, the liquid inlet rod fixing mechanism can fix the liquid inlet rod 4 after the liquid inlet rod 4 moves to the target position.

[0056] Furthermore, the liquid inlet rod fixing mechanism includes a fixing mechanism 11 and a fixing mechanism 2 10; a clamping mechanism 13 is provided on the liquid inlet rod 4; the fixing mechanism 11 and the fixing mechanism 2 10 are both arranged at the upper end of the adjusting rod 8, the fixing mechanism 11 and the fixing mechanism 2 10 are arranged at intervals, and the fixing mechanism 1 11 is located above the fixing mechanism 2 10; the fixing mechanism 1 11 and the fixing mechanism 2 10 cooperate with the clamping mechanism 13 to limit the up and down movement of the liquid inlet rod 4; when the clamping mechanism 13 is located at the fixing mechanism 1 11, the inner nozzle 5 is located in the outer nozzle 6; when the clamping mechanism 13 is located at the fixing mechanism 2 10, the outlet of the inner nozzle 5 is flush with the outlet of the outer nozzle 6.

[0057] Due to the existence of the fixing mechanism 1 11 and the fixing mechanism 2 10, there are two fixed positions on the adjustment rod 8, so the clamping mechanism 13 can be fixed only at the two fixed positions, so that the rapid switching between the internal hybrid type and the external hybrid type can be achieved, and the operation is very simple.

[0058] Further, such as Figure 4 , 5 As shown, the fixing mechanism 1 11 and the fixing mechanism 2 10 have the same structure, and both include a top block 103 and a top block spring 101; in the radial direction of the adjusting rod 8, a top block mounting groove is opened on the side wall of the adjusting rod 8, the entrance of the top block mounting groove is located at the inner wall of the adjusting rod 8, and the bottom of the top block mounting groove is close to the outer wall of the adjusting rod 8; the top block 103 is slidably arranged in the top block mounting groove and is located at the entrance of the top block mounting groove, the height of the top block 103 matches the height of the top block mounting groove, and the top block The spring 101 is arranged in the top block installation groove, the front end of the top block spring 101 contacts or is connected to the rear end of the top block 103, and the rear end of the top block spring 101 contacts or is connected to the bottom of the top block installation groove; the top block spring 101 pushes the top block 103 to move in the top block installation groove along the radial direction of the adjusting rod 8, so as to push the front end of the top block 103 out of the top block installation groove; the front end surface of the top block 103 is arranged obliquely, and in the radial direction of the adjusting rod 8, the top length of the top block 103 is less than the bottom length of the top block 103, such as Figure 4 , 5 As shown, the cross section of the top block 103 is a right-angle trapezoid. The clamping mechanism 13 includes an upper shoulder 131 and a lower shoulder 132 arranged on the liquid inlet rod 4; the upper shoulder 131 and the lower shoulder 132 are arranged at intervals so that the gap between them forms a clamping groove; Figure 4 , 5As shown, the upper shoulder 131 is a tapered shoulder that is smaller at the top and larger at the bottom, and the maximum diameter of the upper shoulder 131 is greater than the maximum diameter of the lower shoulder 132; the front end of the top block 103 is used to insert into the clamping groove to limit the up and down movement of the liquid inlet rod 4.

[0059] like Figure 4 , 5 As shown, when the lower shoulder 132 is located above the top block 103, the liquid inlet rod 4 moves downward, and the lower shoulder 132 presses on the inclined surface of the front end of the top block 103, so that the top block 103 can be retracted into the top block mounting groove. When the liquid inlet rod 4 continues to move downward, the lower shoulder 132 is located below the top block 103. At this time, the top block 103 can extend from the top block mounting groove, so that the front end of the top block 103 is inserted into the clamping groove, thereby limiting the up and down movement of the liquid inlet rod 4. When the liquid inlet rod 4 continues to move downward, the upper shoulder 131 presses on the inclined surface of the front end of the top block 103, so that the top block 103 can be retracted into the top block mounting groove again. Since the maximum diameter of the upper shoulder 131 is greater than the maximum diameter of the lower shoulder 132, the top block 103 is retracted a longer distance, and the liquid inlet rod 4 can move upward or downward. When the upper shoulder 131 is located below the top block 103, the liquid inlet rod 4 moves upward. Since the upper shoulder 131 is a conical shoulder with a small upper portion and a large lower portion, the upper shoulder 131 can be pressed against the inclined surface at the front end of the top block 103, so that the top block 103 can be retracted into the top block mounting groove. At this time, the liquid inlet rod 4 can choose to move upward or downward.

[0060] In the present invention, the fixing mechanism 1 11 and the fixing mechanism 2 10 cooperate with the clamping mechanism 13 to facilitate the rapid fixing and movement of the liquid inlet rod 4 and realize the rapid switching between the internal mixing type and the external mixing type.

[0061] A plurality of top block installation slots can be provided at the installation positions of the fixing mechanism 1 11 and the fixing mechanism 2 10. The top block installation slots at the installation position of the fixing mechanism 1 11 are located on the same horizontal plane, and are provided on the adjusting rod 8 at equal intervals, and then a fixing mechanism 1 11 is provided in each top block installation slot; the top block installation slots at the installation position of the fixing mechanism 2 10 are located on the same horizontal plane, and are provided on the adjusting rod 8 at equal intervals, and then a fixing mechanism 2 10 is provided in each top block installation slot. Figure 4 As shown, two top block mounting grooves are opened at the installation position of the fixing mechanism 11, and the two top block mounting grooves are symmetrically arranged about the liquid inlet rod 4; the two top block mounting grooves are both provided with the fixing mechanism 11; two top block mounting grooves are opened at the installation position of the fixing mechanism 2 10, and the two top block mounting grooves are symmetrically arranged about the liquid inlet rod 4; the two top block mounting grooves are both provided with the fixing mechanism 2 10.

[0062] Multiple fixing mechanisms 1 11 and 2 10 are provided. Compared with one fixing mechanism 1 11 and one fixing mechanism 2 10 , it is possible to avoid eccentricity of the liquid inlet rod 4 when fixing the liquid inlet rod 4 .

[0063] Furthermore, a top block limiting rod 102 is arranged in the top block mounting groove, the front end of the top block limiting rod 102 is connected to the rear end of the top block 103, the rear end of the top block limiting rod 102 passes through the bottom of the top block mounting groove, and a limiting shoulder 104 is also arranged on the outer edge of the rear end of the top block limiting rod 102, and the limiting shoulder 104 is located outside the adjusting rod 8; the diameter of the limiting shoulder 104 is smaller than the height of the top block 103, the top block spring 101 is sleeved on the top block limiting rod 102, and the top block limiting rod 102 can move in the top block mounting groove along the radial direction of the adjusting rod 8.

[0064] In the above structure, since the limiting shoulder 104 is located outside the adjusting rod 8, the maximum extension distance of the top block 103 can be limited, thereby preventing the top block 103 from falling from the top block installation groove.

[0065] like Figure 6 As shown, a liquid inlet rod reset spring 14 is arranged inside the adjusting rod 8; a reset shaft shoulder 18 is arranged on the liquid inlet rod 4, and the reset shaft shoulder 18 is located below the clamping mechanism 13; the liquid inlet rod reset spring 14 is sleeved outside the liquid inlet rod 4, and the upper end of the liquid inlet rod reset spring 14 is in contact with or connected to the lower end of the reset shaft shoulder 18, and the lower end of the liquid inlet rod reset spring 14 is in contact with or connected to the top of the air inlet rod 2.

[0066] The presence of the liquid inlet rod reset spring 14 can prevent the liquid inlet rod 4 from falling freely downward under the action of gravity. At the same time, when the front end of the top block 103 is inserted into the clamping groove, the upper surface of the lower shoulder 132 can always be in contact with the lower surface of the top block 103, thereby preventing the liquid inlet rod 4 from vibrating up and down due to external vibration.

[0067] The lower end of the adjusting rod 8 is connected to the upper end of the air intake rod 2 through an adjusting nut, the outer wall of the adjusting rod 8 is threadedly connected to the upper end of the adjusting nut, and the upper end of the air intake rod 2 is threadedly connected to the lower end of the adjusting nut; or the lower end of the adjusting rod 8 is connected to the upper end of the air intake rod 2 through an adjusting screw tube 9; an adjusting rod connecting shaft shoulder 16 is provided on the outer wall of the lower end of the adjusting rod 8, and an adjusting screw connecting shaft shoulder 17 is provided on the inner wall of the upper end of the adjusting screw tube 9; the upper end of the adjusting screw tube 9 is sleeved outside the adjusting rod 8, and the adjusting rod connecting shaft shoulder 16 is located below the adjusting screw connecting shaft shoulder 17; the lower end of the adjusting screw tube 9 is threadedly connected to the upper end of the air intake rod 2; a compression spring 15 is provided in the adjusting screw tube 9, and the compression spring 15 is sleeved outside the liquid inlet rod 4, the upper end of the compression spring 15 is in contact with or connected to the adjusting rod connecting shaft shoulder 16, and the lower end of the compression spring 15 is in contact with or connected to the top of the air intake rod 2.

[0068] When the air intake rod 2 is fixed at the fixing mechanism 1 11 or the fixing mechanism 2 10, by turning the adjusting nut or adjusting screw 9, the distance between the adjusting rod 8 and the air intake rod 2 can be shortened or increased, thereby moving the inner nozzle 5 upward or downward to fine-tune the position of the inner nozzle 5. In order to facilitate adjustment, a scale line can be set on the air intake rod 2.

[0069] A one-way valve 7 is arranged at the upper end of the liquid inlet rod 4. The one-way valve 7 can prevent the liquid in the liquid inlet rod 4 from flowing back when the liquid inlet pressure is less than the air inlet pressure.

[0070] The present invention also discloses a method for atomizing lithium iron manganese phosphate slurry based on the above-mentioned spray rod; the method comprises:

[0071] The liquid inlet rod 4 is controlled to move downward so that the inner nozzle 5 extends out of the outer nozzle 6, and the distance between the outlet of the inner nozzle 5 and the outlet of the outer nozzle 6 is 0.1-0.5 cm; the metal impurities in the lithium iron manganese phosphate slurry are removed by a demagnetizer; the large particle agglomerates in the lithium iron manganese phosphate slurry are filtered by a fluororubber filter; the lithium iron manganese phosphate slurry in the storage tank is stirred; the lithium iron manganese phosphate slurry in the storage tank is delivered to the liquid inlet rod 4 of the spray rod through a pumping pipeline, and the gas is passed into the air inlet 3 of the spray rod; wherein the ratio of the gas mass flow rate to the lithium iron manganese phosphate slurry mass flow rate is 5:1; the gas flow rate is 22-40 m / s; during pumping, the pumping pipeline is insulated to maintain the temperature of the pumping pipeline at 12°C.

[0072] In the existing spray rod, the outlets of the inner nozzle and the outer nozzle are flush, and there will be slurry crystallization at the outlet of the outer nozzle, which will cause the outer nozzle to be blocked, resulting in a decrease in the gas output; the reduction in the gas-liquid ratio will change the spray particle size distribution. In the present invention, the distance between the outlet of the inner nozzle and the outlet of the outer nozzle is 0.1~0.5cm; above 0.1cm, the slurry can be prevented from blocking the outer nozzle, and the control within 0.5cm is to ensure that the gas from the outer nozzle can be mixed with the slurry from the inner nozzle. In the present invention, 0.2cm is preferred. At the same time, in the present invention, due to the process of removing metal impurities, the agglomeration of magnetic substances in the metal impurities can be avoided, causing the clogging of the inner nozzle. Filtering large particle agglomerates in the slurry can also avoid clogging of the inner nozzle. Maintaining the temperature of the pumping pipeline at 12°C can prevent the evaporation of the solvent in the slurry from increasing the viscosity of the slurry and agglomerating the materials, thereby avoiding clogging of the inner nozzle. The ratio of the gas flow rate to the lithium manganese iron phosphate slurry flow rate is 5:1, which can ensure sufficient atomization of the slurry and ensure continuous discharge. The gas flow rate is above 22 m / s to ensure that the gas ejected from the outer nozzle outlet has sufficient shear force to ensure that the slurry is dispersed and more conducive to atomization, and is controlled within 40 m / s to avoid energy loss. In the present invention, 22 m / s is preferred.

[0073] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spray rod, characterized in that: It comprises an air inlet rod (2), a liquid inlet rod (4), an inner nozzle (5), and an outer nozzle (6); The air intake rod (2) is a hollow rod with a sealed upper end and an open lower end. The outer nozzle (6) is connected to the lower end of the air intake rod (2). An air intake port (3) is provided on the side wall of the air intake rod (2). The liquid inlet rod (4) is a hollow tube that passes through from top to bottom, and the inner nozzle (5) is connected to the lower end of the liquid inlet rod (4); The liquid inlet rod (4) is arranged in the air inlet rod (2), and the upper end of the liquid inlet rod (4) penetrates the upper end of the air inlet rod (2); the liquid inlet rod (4) can move up and down in the air inlet rod (2), so that the inner nozzle (5) can extend out of the outer nozzle (6), thereby realizing rapid switching between the internal mixing type and the external mixing type; A gas rotating mechanism (12) is provided in the gas inlet rod (2), and the gas rotating mechanism (12) is used to make the gas entering the gas inlet port (3) rotate spirally around the liquid inlet rod (4) from top to bottom, and send the gas from the gas inlet port to the outer nozzle (6); An adjusting rod (8) is arranged above the air inlet rod (2); and a liquid inlet rod fixing mechanism is arranged on the adjusting rod (8); The adjusting rod (8) is a hollow tube that passes through from top to bottom, and the lower end of the adjusting rod (8) is connected to the upper end of the air intake rod (2); The upper end of the liquid inlet rod (4) extends into the adjusting rod (8); the liquid inlet rod fixing mechanism is used to fix the liquid inlet rod (4) and limit the liquid inlet rod (4) from moving up and down; The liquid inlet rod fixing mechanism comprises a fixing mechanism 1 (11) and a fixing mechanism 2 (10); The liquid inlet rod (4) is provided with a clamping mechanism (13); The fixing mechanism 1 (11) and the fixing mechanism 2 (10) are both arranged at the upper end of the adjusting rod (8), the fixing mechanism 1 (11) and the fixing mechanism 2 (10) are arranged at an interval, and the fixing mechanism 1 (11) is located above the fixing mechanism 2 (10); the fixing mechanism 1 (11) and the fixing mechanism 2 (10) cooperate with the clamping mechanism (13) to limit the upward and downward movement of the liquid inlet rod (4); When the clamping mechanism (13) is located at the fixing mechanism 1 (11), the inner nozzle (5) is located inside the outer nozzle (6); When the clamping mechanism (13) is located at the second fixing mechanism (10), the outlet of the inner nozzle (5) is flush with the outlet of the outer nozzle (6); The fixing mechanism 1 (11) and the fixing mechanism 2 (10) have the same structure, and both include a top block (103) and a top block spring (101); In the radial direction of the adjusting rod (8), a top block installation groove is provided on the side wall of the adjusting rod (8), the entrance of the top block installation groove is located at the inner wall of the adjusting rod (8), and the bottom of the top block installation groove is close to the outer wall of the adjusting rod (8); The top block (103) is slidably arranged in the top block installation groove and is located at the entrance of the top block installation groove. The height of the top block (103) matches the height of the top block installation groove. The top block spring (101) is arranged in the top block installation groove. The front end of the top block spring (101) contacts or is connected to the rear end of the top block (103), and the rear end of the top block spring (101) contacts or is connected to the bottom of the top block installation groove. The top block spring (101) pushes the top block (103) to move in the top block installation groove along the radial direction of the adjustment rod (8), so as to push the front end of the top block (103) out of the top block installation groove. The front end surface of the top block (103) is arranged obliquely. In the radial direction of the adjustment rod (8), the top length of the top block (103) is smaller than the bottom length of the top block (103). The clamping mechanism (13) comprises an upper shaft shoulder (131) and a lower shaft shoulder (132) arranged on the liquid inlet rod (4); the upper shaft shoulder (131) and the lower shaft shoulder (132) are arranged at intervals so that the gap between the upper shaft shoulder (131) and the lower shaft shoulder (132) forms a clamping groove; the upper shaft shoulder (131) is a tapered shaft shoulder with a smaller upper portion and a larger lower portion, and the maximum diameter of the upper shaft shoulder (131) is greater than the maximum diameter of the lower shaft shoulder (132); The front end of the top block (103) is used to be inserted into the clamping groove to limit the up and down movement of the liquid inlet rod (4).

2. The spray bar according to claim 1, characterized in that: The gas rotating mechanism (12) comprises a hollow column, which is fixedly arranged in the air inlet rod (2) and movably sleeved on the liquid inlet rod (4), and the outer wall of the column contacts the inner wall of the air inlet rod (2); the outer wall of the column is provided with a spiral groove extending from top to bottom around the column; the spiral groove at the lower end of the column is connected to the inside of the outer nozzle (6); the air inlet (3) is arranged at the upper part of the air inlet rod (2), and the air inlet (3) is connected to the spiral groove at the upper part of the column.

3. The spray bar according to claim 1, characterized in that: A top block limiting rod (102) is arranged in the top block installation groove, the front end of the top block limiting rod (102) is connected to the rear end of the top block (103), the rear end of the top block limiting rod (102) passes through the bottom of the top block installation groove, and a limiting shaft shoulder (104) is also arranged on the outer edge of the rear end of the top block limiting rod (102), and the limiting shaft shoulder (104) is located outside the adjustment rod (8); the diameter of the limiting shaft shoulder (104) is smaller than the height of the top block (103), the top block spring (101) is sleeved on the top block limiting rod (102), and the top block limiting rod (102) can move in the top block installation groove along the radial direction of the adjustment rod (8).

4. The spray bar according to claim 1, characterized in that: A liquid inlet rod reset spring (14) is arranged inside the regulating rod (8); a reset shaft shoulder (18) is arranged on the liquid inlet rod (4), and the reset shaft shoulder (18) is located below the clamping mechanism (13); the liquid inlet rod reset spring (14) is sleeved outside the liquid inlet rod (4), the upper end of the liquid inlet rod reset spring (14) is in contact with or connected to the lower end of the reset shaft shoulder (18), and the lower end of the liquid inlet rod reset spring (14) is in contact with or connected to the top of the air inlet rod (2).

5. The spray bar according to claim 1, characterized in that: The lower end of the adjusting rod (8) is connected to the upper end of the air intake rod (2) via an adjusting nut, the outer wall of the adjusting rod (8) is threadedly connected to the upper end of the adjusting nut, and the upper end of the air intake rod (2) is threadedly connected to the lower end of the adjusting nut; Or the lower end of the adjusting rod (8) is connected to the upper end of the air intake rod (2) through the adjusting screw (9); an adjusting rod connecting shaft shoulder (16) is provided on the outer wall of the lower end of the adjusting rod (8), and an adjusting screw connecting shaft shoulder (17) is provided on the inner wall of the upper end of the adjusting screw (9); the upper end of the adjusting screw (9) is sleeved outside the adjusting rod (8), and the adjusting rod connecting shaft shoulder (16) is located below the adjusting screw connecting shaft shoulder (17); the lower end of the adjusting screw (9) is threadedly connected to the upper end of the air intake rod (2); a compression spring (15) is provided inside the adjusting screw (9), the compression spring (15) is sleeved outside the liquid intake rod (4), the upper end of the compression spring (15) is in contact with or connected to the adjusting rod connecting shaft shoulder (16), and the lower end of the compression spring (15) is in contact with or connected to the top of the air intake rod (2).

6. The spray bar according to claim 1, characterized in that: A one-way valve (7) is provided at the upper end of the liquid inlet rod (4).

7. A method for atomizing lithium iron manganese phosphate slurry based on the spray bar according to any one of claims 1 to 6, characterized in that: The method comprises: Control the liquid inlet rod (4) to move downward so that the inner nozzle (5) extends out of the outer nozzle (6), and the distance between the outlet of the inner nozzle (5) and the outlet of the outer nozzle (6) is 0.1 to 0.5 cm; The metal impurities in the lithium iron manganese phosphate slurry are removed by a demagnetizer; The large particle agglomerates in the lithium iron manganese phosphate slurry are filtered through a fluororubber filter; Stirring the lithium iron manganese phosphate slurry in the storage tank; The lithium iron manganese phosphate slurry in the storage tank is delivered to the liquid inlet rod (4) of the spray rod through a pumping pipeline, and the gas is introduced into the air inlet (3) of the spray rod; wherein the ratio of the mass flow rate of the gas to the mass flow rate of the lithium iron manganese phosphate slurry is 5:1; the flow rate of the gas is 22-40 m / s; during pumping, the pumping pipeline is insulated so that the temperature of the pumping pipeline is maintained at 12°C.

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