Two-fluid spraying rod

Abstract

The utility model discloses a two-fluid spraying rod which 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 with the lower end of the air inlet rod, and an air inlet is formed in the side wall of the air inlet rod; the liquid inlet rod is a vertically-through hollow pipe, and the inner nozzle is connected with the lower end of the liquid inlet rod. The liquid inlet rod is arranged in the air inlet rod, and the upper end of the liquid inlet rod penetrates through 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; a liquid inlet rod fixing mechanism is arranged on the air inlet rod and used for fixing the liquid inlet rod and limiting the liquid inlet rod from moving up and down. The spraying rod can realize rapid switching between an inner mixing type and an outer mixing type.

Description

Technical Field

[0001] This utility model relates to the field of spray bars, and in particular to a two-fluid spray bar. Background Technology

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

[0003] like Figure 1 As shown, the internal mixing spray bar includes an air inlet bar 2, a liquid inlet bar 4, an inner nozzle 5, and an outer nozzle 6. The air inlet bar 2 is a hollow bar with a sealed upper end and an open lower end. The outer nozzle 6 is connected to the lower end of the air inlet bar 2, and an air inlet 3 is opened on the side wall of the air inlet bar 2. A liquid inlet 1 is opened at the upper end of the air inlet bar 2. The liquid inlet bar 4 is a hollow tube that runs vertically through the air inlet bar, and the inner nozzle 5 is connected to the lower end of the liquid inlet bar 4. The liquid inlet bar 4 is located inside the air inlet bar 2, and the upper end of the liquid inlet bar 4 is connected to the liquid inlet 1. The inner nozzle 5 at the lower end of the liquid inlet bar 4 is located inside the outer nozzle 6.

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

[0005] Internal mixing spray booms mix liquid and gas inside the outer nozzle before spraying them out, while external mixing spray booms mix the liquid and gas after they exit the outer nozzle. Internal mixing spray booms offer better atomization and higher energy efficiency, but they are more prone to clogging when the liquid is a slurry. Therefore, different types of spray booms need to be selected based on different needs, and the liquid inlet and gas inlet need to be connected to the liquid delivery pipe and gas delivery pipe respectively. However, changing the type of spray boom mid-operation is inconvenient, requiring the original spray boom to be removed from the liquid delivery pipe and gas delivery pipe. Quick switching is not possible, making the operation cumbersome.

[0006] Therefore, it is particularly necessary to provide a spray bar that can quickly switch between spray bar types. Utility Model Content

[0007] The purpose of this invention is to provide a two-fluid spray bar that can quickly switch between internal and external mixing modes, addressing the aforementioned problems.

[0008] The technical solution adopted in this utility model is as follows:

[0009] A two-fluid spray bar includes an air inlet bar, a liquid inlet bar, an inner nozzle, and an outer nozzle;

[0010] 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 formed in the side wall of the air inlet rod; the liquid inlet rod is a hollow pipe penetrating 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 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; a liquid inlet rod fixing mechanism is arranged on the air inlet rod, and the liquid inlet rod fixing mechanism is used for fixing the liquid inlet rod and limiting the up-and-down movement of the liquid inlet rod.

[0011] Further, an adjusting rod is arranged above the air inlet rod; the liquid inlet rod fixing mechanism is arranged on the adjusting rod; the adjusting rod is a hollow pipe penetrating from top to bottom, and the lower end of the adjusting rod is connected to the upper end of the air inlet rod; the upper end of the liquid inlet rod extends into the adjusting rod.

[0012] Further, the liquid inlet rod fixing mechanism comprises a first fixing mechanism and a second fixing mechanism; a clamping mechanism is arranged on the liquid inlet rod; the first fixing mechanism and the second fixing mechanism are both arranged at the upper end of the adjusting rod, and the first fixing mechanism and the second fixing mechanism are arranged at intervals, with the first fixing mechanism being located above the second fixing mechanism; the first fixing mechanism and the second fixing mechanism 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.

[0013] Further, the first fixing mechanism and the second fixing mechanism are the same in structure and both comprise a top block and a top block spring; in the radial direction of the adjusting rod, a top block mounting groove is formed in the side wall of the adjusting rod, the inlet of the top block mounting groove is located at the inner wall of the adjusting rod, and the groove bottom of the top block mounting groove is close to the outer wall of the adjusting rod;

[0014] the top block is slidably arranged in the top block mounting groove and located at the inlet 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 is in contact with or connected to the rear end of the top block, and the rear end of the top block spring is in contact with or connected to the groove bottom of the top block mounting groove; the top block spring pushes the top block to move in the radial direction of the adjusting rod in the top block mounting groove, 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 arranged obliquely, and in the radial direction of the adjusting rod, the length of the top block top is less than the length of the top block bottom; the clamping mechanism comprises an upper shaft shoulder and a lower shaft shoulder arranged on the liquid inlet rod; the upper shaft shoulder and the lower shaft shoulder are arranged at intervals, so that the gap between the upper shaft shoulder and the lower shaft shoulder forms a clamping groove; the upper shaft shoulder is a tapered shaft shoulder with a small upper end and a large lower end, and the maximum diameter of the upper shaft shoulder is greater than the maximum diameter of the lower shaft shoulder;

[0015] the front end of the top block is used for inserting into the clamping groove to limit the up-and-down movement of the liquid inlet rod.

[0016] Further, the top block mounting slot is provided with a top block limiting rod, the front end of the top block limiting rod is connected with the rear end of the top block, the rear end of the top block limiting rod penetrates through the slot bottom of the top block mounting slot, and a limiting shoulder is further 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 radial direction of the adjusting rod in the top block mounting slot.

[0017] Further, the adjusting rod is provided with a liquid inlet rod return spring; the liquid inlet rod is provided with a return shoulder, and the return shoulder is located below the clamping mechanism; the liquid inlet rod return spring is sleeved outside the liquid inlet rod, the upper end of the liquid inlet rod return spring is in contact with or connected with the lower end of the return shoulder, and the lower end of the liquid inlet rod return spring is in contact with or connected with the top of the air inlet rod.

[0018] Further, the lower end of the adjusting rod is connected with the upper end of the air inlet rod through an adjusting nut, the outer wall of the adjusting rod is in threaded connection with the upper end of the adjusting nut, and the upper end of the air inlet rod is in threaded connection with the lower end of the adjusting nut.

[0019] Or the lower end of the adjusting rod is connected with the upper end of the air inlet rod through an adjusting screw pipe; the outer wall of the lower end of the adjusting rod is provided with an adjusting rod connecting shoulder, the inner wall of the upper end of the adjusting screw pipe is provided with an adjusting screw pipe connecting shoulder; the upper end of the adjusting screw pipe is sleeved outside the adjusting rod, and the adjusting rod connecting shoulder is located below the adjusting screw pipe connecting shoulder; the lower end of the adjusting screw pipe is in threaded connection with the upper end of the air inlet rod; the adjusting screw pipe is provided with a compression spring, the compression spring is sleeved outside the liquid inlet rod, the upper end of the compression spring is in contact with or connected with the adjusting rod connecting shoulder, and the lower end of the compression spring is in contact with or connected with the top of the air inlet rod.

[0020] Further, the air inlet rod is provided with a gas rotating mechanism, and the gas rotating mechanism is used for rotating the gas entering the air inlet from top to bottom around the liquid inlet rod in a spiral manner and sending the gas from the air inlet to the outer nozzle.

[0021] Further, the gas rotating mechanism comprises a hollow column, the column is fixedly arranged in the air inlet rod and movably sleeved on the liquid inlet rod, and the outer wall of the column is in contact with the inner wall of the air inlet rod; a spiral groove extending from top to bottom around the column is formed in the outer wall of the column; the spiral groove at the lower end of the column is in communication with the inside of the outer nozzle; the air inlet is arranged on the upper portion of the air inlet rod, and the air inlet is in communication with the spiral groove at the upper portion of the column.

[0022] Further, the upper end of the liquid inlet rod is provided with a one-way valve.

[0023] As described above, due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0024] In the utility model, since the liquid inlet rod can move up and down in the air inlet rod and the adjusting rod, the position of the inner nozzle and the outer nozzle can be adjusted, 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 or extends out of the outlet of the outer nozzle to form an outer mixing type spray rod; the liquid inlet rod fixing mechanism can fix the liquid inlet rod after the liquid inlet rod moves to the target position. The spray rod can realize the quick switching of the inner mixing type and the outer mixing type according to actual needs, and is more convenient to use than the existing inner mixing type and outer mixing type spray rods. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structure diagram of the existing inner mixing type spray rod;

[0026] Figure 2 It is a structure diagram of the existing outer mixing type spray rod;

[0027] Figure 3 It is a structure diagram of the utility model;

[0028] Figure 4 It is a position relation diagram of the clamping mechanism and the liquid inlet rod fixing mechanism;

[0029] Figure 5 It is an enlarged view of the clamping mechanism and the liquid inlet rod fixing mechanism;

[0030] Figure 6 It is a structure diagram of the adjusting screw pipe;

[0031] In the drawing, 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 pipe, 10 - fixed mechanism two, 11 - fixed mechanism one, 12 - gas rotating mechanism, 13 - clamping mechanism, 14 - liquid inlet rod return spring, 15 - compression spring, 16 - adjusting rod connecting shaft shoulder, 17 - adjusting screw pipe connecting shaft shoulder, 18 - return shaft shoulder, 101 - top block spring, 102 - top block limiting rod, 103 - top block, 104 - limiting shaft shoulder, 131 - upper shaft shoulder, 132 - lower shaft shoulder. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents the preferred application of the application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0034] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0035] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] As Figures 1-6The utility model discloses a two fluid spray rod, it includes air inlet rod 2, liquid inlet rod 4, inner nozzle 5, outer nozzle 6, air inlet rod 2 is the hollow rod of upper end seal lower end opening, and outer nozzle 6 is connected with the lower end of air inlet rod 2, and the lateral wall of air inlet rod 2 is provided with air inlet 3, liquid inlet rod 4 is the hollow pipe of upper and lower through, and inner nozzle 5 is connected with the lower end of liquid inlet rod 4, liquid inlet rod 4 sets up in air inlet rod 2, and the upper end of liquid inlet rod 4 is through the upper end of air inlet rod 2, liquid inlet rod 4 can move up and down in air inlet rod 2, makes inner nozzle 5 can extend outer nozzle 6, air inlet rod 2 is provided with liquid inlet rod fixing mechanism, and liquid inlet rod fixing mechanism is used for fixing liquid inlet rod 4, and restricts the up and down movement of liquid inlet rod 4.

[0039] In the above structure, because liquid inlet rod 4 can move up and down in air inlet rod 2, then the position of inner nozzle 5 and outer nozzle 6 can be adjusted, make inner nozzle 5 be located in outer nozzle 6 and constitute inner mixing type spray rod, or make the outlet of inner nozzle 5 with the outlet of outer nozzle 6 flush or extend outer nozzle 6, constitute outer mixing type spray rod, and liquid inlet rod fixing mechanism can fix liquid inlet rod 4 after moving to target position.

[0040] The spray rod of the utility model can realize the quick switching of inner mixing type and outer mixing type according to actual demand, and is more convenient to use compared with the existing inner mixing type and outer mixing type spray rod.

[0041] Further, the upper portion of the air inlet rod 2 is provided with an adjusting rod 8, the liquid inlet rod fixing mechanism is arranged on the adjusting rod 8, the adjusting rod 8 is a hollow pipe through up and down, the lower end of the adjusting rod 8 is connected with the upper end of the air inlet rod 2, and the upper end of the liquid inlet rod 4 extends into the adjusting rod 8 and can move up and down in the adjusting rod 8.

[0042] When the liquid inlet rod 4 extends upward too long, it is easy to break, and the adjusting rod 8 can protect the liquid inlet rod 4.

[0043] Further, the liquid inlet rod fixing mechanism includes a first fixing mechanism 11 and a second fixing mechanism 10, the liquid inlet rod 4 is provided with a clamping mechanism 13, the first fixing mechanism 11 and the second fixing mechanism 10 are arranged on the upper end of the adjusting rod 8, the first fixing mechanism 11 and the second fixing mechanism 10 are arranged at intervals, the first fixing mechanism 11 is located above the second fixing mechanism 10, the first fixing mechanism 11 and the second fixing mechanism 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 first fixing mechanism 11, the inner nozzle 5 is located in the outer nozzle 6, and 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.

[0044] Because of the existence of the fixing mechanism one 11 and the fixing mechanism two 10, there are two fixed positions on the adjusting rod 8, so the clamping mechanism 13 can be fixed only at the two fixed positions, and the quick switching of the inner mixing type and the outer mixing type can be realized, and the operation is very simple.

[0045] Further, as shown in Figure 4 、 5 , the fixing mechanism one 11 and the fixing mechanism two 10 are the same structure, both including 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 groove bottom of the top block mounting groove is close to the outer wall of the adjusting rod 8; the top block 103 is slidingly arranged in the top block mounting groove and 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, the top block spring 101 is arranged in the top block mounting groove, the front end of the top block spring 101 is in contact with or connected to the rear end of the top block 103, and the rear end of the top block spring 101 is in contact with or connected to the groove bottom of the top block mounting groove; the top block spring 101 pushes the top block 103 to move in the radial direction of the adjusting rod 8 in the top block mounting groove, for pushing the front end of the top block 103 out of the top block mounting groove; the front end face of the top block 103 is inclined, and in the radial direction of the adjusting rod 8, the length of the top of the top block 103 is less than the length of the bottom of the top block 103, as shown in Figure 4 、 5 , the cross section of the top block 103 is a right trapezoid. The clamping mechanism 13 includes 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, and the gap between them forms a clamping groove; as shown in Figure 4 、 5 , the upper shaft shoulder 131 is a tapered shaft shoulder with small upper and large lower, 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 for inserting into the clamping groove to limit the up and down movement of the liquid inlet rod 4.

[0046] As shown in Figure 4 、 5As shown, when the lower shaft shoulder 132 is above the top block 103, the liquid inlet rod 4 moves downward, the lower shaft shoulder 132 is on the inclined surface at the front end of the top block 103, and 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 shaft shoulder 132 is below the top block 103, at this time, the top block 103 can be extended from the top block mounting groove, and the front end of the top block 103 is inserted into the clamping groove, so that the upward and downward movement of the liquid inlet rod 4 can be limited, when the upper shaft shoulder 131 is on the inclined surface at the front end of the top block 103, the top block 103 can be retracted into the top block mounting groove, and the liquid inlet rod 4 can move upward or downward at this time. When the upper shaft shoulder 131 is below the top block 103, the liquid inlet rod 4 moves upward, and the upper shaft shoulder 131 can be on 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, and the liquid inlet rod 4 can be selected to move upward or downward at this time.

[0047] In the utility model, the fixed mechanism one 11 and the fixed mechanism two 10 cooperate with the clamping mechanism 13, and the liquid inlet rod 4 can be conveniently fixed and moved quickly, and the quick switching of the internal mixing type and the external mixing type is realized.

[0048] The installation position of the fixed mechanism one 11 and the fixed mechanism two 10 can be provided with a plurality of top block mounting grooves, the top block mounting grooves at the installation position of the fixed mechanism one 11 are located on the same horizontal plane, a circle is provided on the adjusting rod 8 at equal intervals, and then one fixed mechanism one 11 is arranged in each top block mounting groove; the top block mounting grooves at the installation position of the fixed mechanism two 10 are located on the same horizontal plane, a circle is provided on the adjusting rod 8 at equal intervals, and then one fixed mechanism two 10 is arranged in each top block mounting groove. Figure 4 As shown, two top block mounting grooves are provided at the installation position of the fixed mechanism one 11, and the two top block mounting grooves are symmetrically arranged about the liquid inlet rod 4; the fixed mechanism one 11 is arranged in each top block mounting groove; two top block mounting grooves are provided at the installation position of the fixed mechanism two 10, and the two top block mounting grooves are symmetrically arranged about the liquid inlet rod 4; the fixed mechanism two 10 is arranged in each top block mounting groove.

[0049] The fixed mechanism one 11 and the fixed mechanism two 10 are provided in plurality, and relative to one fixed mechanism one 11 and fixed mechanism two 10, the eccentricity of the liquid inlet rod 4 caused by fixing the liquid inlet rod 4 can be avoided.

[0050] Furthermore, a top block limiting rod 102 is provided 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, and the rear end of the top block limiting rod 102 penetrates the bottom of the top block mounting groove. A limiting shoulder 104 is also provided on the outer edge of the rear end of the top block limiting rod 102. 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. The top block limiting rod 102 can move in the radial direction of the adjusting rod 8 within the top block mounting groove.

[0051] 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, thus preventing the top block 103 from falling out of the top block mounting slot.

[0052] like Figure 6 As shown, the adjusting rod 8 is provided with a liquid inlet rod return spring 14; the liquid inlet rod 4 is provided with a return shoulder 18, which is located below the snap-fit ​​mechanism 13; the liquid inlet rod return spring 14 is sleeved on the outside of the liquid inlet rod 4, the upper end of the liquid inlet rod return spring 14 is in contact with or connected to the lower end of the return shoulder 18, and the lower end of the liquid inlet rod return spring 14 is in contact with or connected to the top of the air inlet rod 2.

[0053] The presence of the inlet rod return spring 14 prevents the inlet rod 4 from falling freely downwards under gravity. At the same time, when the front end of the top block 103 is inserted into the snap-fit ​​groove, the upper surface of the lower shoulder 132 is always in contact with the lower surface of the top block 103, thus preventing the inlet rod 4 from vibrating up and down due to external vibration.

[0054] 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 threaded to the upper end of the adjusting nut, and the upper end of the air intake rod 2 is threaded to the lower end of the adjusting nut.

[0055] Alternatively, the lower end of the adjusting rod 8 can be connected to the upper end of the air intake rod 2 via an adjusting screw tube 9; an adjusting rod connecting shoulder 16 is provided on the outer wall of the lower end of the adjusting rod 8, and an adjusting screw tube connecting 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 shoulder 16 is located below the adjusting screw tube connecting 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 inside the adjusting screw tube 9, 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 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.

[0056] When the air inlet rod 2 is fixed at the first fixing mechanism 11 or the second fixing mechanism 10, the distance between the adjusting rod 8 and the air inlet rod 2 can be shortened or increased by rotating the adjusting nut or the adjusting pipe 9, so as to move the inner nozzle 5 upward or downward and finely adjust the position of the inner nozzle 5.

[0057] Further, the air inlet rod 2 is provided with a gas rotating mechanism 12, which is used for rotating the gas entering the air inlet 3 from top to bottom around the liquid inlet rod 4 and sending the gas from the air inlet to the outer nozzle 6.

[0058] The gas rotating mechanism can rotate the gas, form a shearing force, disperse the liquid and be more beneficial to atomization.

[0059] 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, the liquid inlet rod 4 can move up and down in the column, the outer wall of the column is in contact with the inner wall of the air inlet rod 2, a spiral groove extending from top to bottom around the column is formed in the outer wall of the column, the spiral groove at the lower end of the column is in communication with the inside of the outer nozzle 6, the air inlet 3 is arranged at the upper portion of the air inlet rod 2, the air inlet 3 is in communication with the spiral groove at the upper portion of the column, and the width of the slot of the spiral groove is greater than or equal to the width of the outlet of the air inlet 3.

[0060] The upper end of the liquid inlet rod 4 is provided with a one-way valve 7, and the liquid in the liquid inlet rod 4 can be prevented from flowing backward when the liquid inlet pressure is less than the air inlet pressure due to the one-way valve 7.

[0061] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A two-fluid spray bar characterized by: It includes air inlet rod (2), liquid inlet rod (4), inner nozzle (5), outer nozzle (6); The air inlet rod (2) is a hollow rod with sealed upper end and open lower end, the outer nozzle (6) is connected with the lower end of the air inlet rod (2), and the side wall of the air inlet rod (2) is provided with an air inlet (3); The liquid inlet rod (4) is a hollow pipe penetrating through the upper and lower ends, and the inner nozzle (5) is connected with 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) penetrates through the upper end of the air inlet rod (2), and 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); The air inlet rod (2) is provided with a liquid inlet rod fixing mechanism, and the liquid inlet rod fixing mechanism is used for fixing the liquid inlet rod (4) and limiting the up and down movement of the liquid inlet rod (4).

2. The two-fluid spray rod according to claim 1, wherein: An adjusting rod (8) is arranged above the air inlet rod (2), and the liquid inlet rod fixing mechanism is arranged on the adjusting rod (8); The adjusting rod (8) is a hollow pipe penetrating through the upper and lower ends, and the lower end of the adjusting rod (8) is connected with the upper end of the air inlet rod (2); The upper end of the liquid inlet rod (4) extends into the adjusting rod (8).

3. The two-fluid spray rod according to claim 2, wherein: The liquid inlet rod fixing mechanism comprises a first fixing mechanism (11) and a second fixing mechanism (10); The liquid inlet rod (4) is provided with a clamping mechanism (13); The first fixing mechanism (11) and the second fixing mechanism (10) are arranged on the upper end of the adjusting rod (8), the first fixing mechanism (11) and the second fixing mechanism (10) are arranged at intervals, and the first fixing mechanism (11) is located above the second fixing mechanism (10); the first fixing mechanism (11) and the second fixing mechanism (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 first fixing mechanism (11), the inner nozzle (5) is located in 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).

4. The two-fluid spray rod according to claim 3, wherein: The first fixing mechanism (11) and the second fixing mechanism (10) are the same in structure and each comprise 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 formed in the side wall of the adjusting rod (8), the inlet of the top block mounting groove is located at the inner wall of the adjusting rod (8), and the groove bottom of the top block mounting groove is close to the outer wall of the adjusting rod (8). The top block (103) is slidingly arranged in a top block mounting groove and 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. The top block spring (101) is arranged in the top block mounting groove. The front end of the top block spring (101) is in contact with or connected to the rear end of the top block (103), and the rear end of the top block spring (101) is in contact with or connected to the bottom of the top block mounting groove. The top block spring (101) pushes the top block (103) to move in the radial direction of the adjusting rod (8) in the top block mounting groove, so as to push the front end of the top block (103) out of the top block mounting groove. The front end surface of the top block (103) is inclined. In the radial direction of the adjusting rod (8), the length of the top of the top block (103) is less than the length of the bottom 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 in a spaced manner, and 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 small upper part and a large lower part. 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-down movement of the liquid inlet rod (4).

5. The two-fluid spray bar of claim 4, wherein: The top block mounting groove is provided with a top block limiting rod (102). 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) penetrates through the bottom of the top block mounting groove, and a limiting shaft shoulder (104) is further arranged on the outer edge of the rear end of the top block limiting rod (102). The limiting shaft shoulder (104) is located outside the adjusting rod (8). The diameter of the limiting shaft shoulder (104) is less than the height of the top block (103). The top block spring (101) is sleeved on the top block limiting rod (102). The top block limiting rod (102) can move in the radial direction of the adjusting rod (8) in the top block mounting groove.

6. The two-fluid spray bar of claim 3, wherein: The adjusting rod (8) is provided with a liquid inlet rod return spring (14). The liquid inlet rod (4) is provided with a return shaft shoulder (18) located below the clamping mechanism (13). The liquid inlet rod return spring (14) is sleeved outside the liquid inlet rod (4). The upper end of the liquid inlet rod return spring (14) is in contact with or connected to the lower end of the return shaft shoulder (18), and the lower end of the liquid inlet rod return spring (14) is in contact with or connected to the top of the air inlet rod (2).

7. The two-fluid spray bar of claim 2, wherein: The lower end of the adjusting rod (8) is connected to the upper end of the air inlet 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 inlet rod (2) is threadedly connected to the lower end of the adjusting nut. Or the lower end of the adjusting rod (8) is connected with the upper end of the air inlet rod (2) through an adjusting screw pipe (9); an adjusting rod connecting shoulder (16) is arranged on the outer wall of the lower end of the adjusting rod (8), and an adjusting screw pipe connecting shoulder (17) is arranged on the inner wall of the upper end of the adjusting screw pipe (9); the upper end of the adjusting screw pipe (9) is sleeved outside the adjusting rod (8), and the adjusting rod connecting shoulder (16) is located below the adjusting screw pipe connecting shoulder (17); the lower end of the adjusting screw pipe (9) is threadedly connected with the upper end of the air inlet rod (2); a compression spring (15) is arranged in the adjusting screw pipe (9) and sleeved outside the liquid inlet rod (4), the upper end of the compression spring (15) is in contact with or connected with the adjusting rod connecting shoulder (16), and the lower end of the compression spring (15) is in contact with or connected with the top of the air inlet rod (2).

8. The two-fluid spray bar of claim 1, wherein: The air inlet rod (2) is provided with a gas rotating mechanism (12), which is used for rotating the gas entering the air inlet (3) from top to bottom around the liquid inlet rod, and sending the gas from the air inlet to the outer nozzle (6).

9. The two-fluid spray bar of claim 8, wherein: The gas rotating mechanism (12) comprises a hollow cylinder, 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 cylinder is in contact with the inner wall of the air inlet rod (2); a spiral groove extending from top to bottom around the cylinder is formed in the outer wall of the cylinder; the spiral groove at the lower end of the cylinder is in communication with the inside of the outer nozzle (6); the air inlet (3) is arranged at the upper portion of the air inlet rod (2) and is in communication with the spiral groove at the upper portion of the cylinder.

10. The two-fluid spray bar of claim 1, wherein: The upper end of the liquid inlet rod (4) is provided with a one-way valve (7).

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