Double-fluid spray gun with material pre-dispersing function

Abstract

The utility model discloses a double-fluid spray gun with a material pre-dispersing function, which belongs to the technical field of double-fluid spray guns and comprises a spray gun, a mixing barrel is in threaded connection with the upper end of the surface of the spray gun, a stirring mechanism is arranged on the surface of the mixing barrel, the double-fluid spray gun further comprises a valve control mechanism, and the valve control mechanism comprises a protective barrel arranged in the mixing barrel. A reciprocating lead screw is rotatably connected to the inner wall of the protective cylinder, a moving rod is slidably connected to the inner wall of the protective cylinder, and the inner wall of the moving rod is arranged on the surface of the reciprocating lead screw. The lower end of the inner wall of the mixing barrel is blocked through the moving rod and the stop block, it is guaranteed that two materials in the mixing barrel can only be guided into the spray gun after being fully mixed, and compared with an existing mode that the two materials easily flow into the spray gun before being fully mixed, the lower end of the inner wall of the mixing barrel is blocked, so that the materials are prevented from flowing into the spray gun; therefore, the uniform dispersion effect of the spray gun on the materials is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to double fluid spray gun technical field, concretely relates to a kind of double fluid spray gun of material pre-dispersion function. BACKGROUND

[0002] Double fluid spray gun is a kind of equipment frequently used in material pre-dispersion function, is widely used in fine chemical industry, paint, ink, food, medicine and other fields.It realizes the uniform dispersion of material by mixing liquid and gas to form tiny droplets.Double fluid spray gun has the advantages of high efficiency, energy saving, simple operation, etc., and is suitable for processing high viscosity liquid and high solid content material.

[0003] Through search, China patent "a kind of double fluid spray gun of high-efficiency atomization" authorized announcement number "CN217747551U" is rotated by speed regulating motor to drive mixing rod to stir and mix two kinds of fluids in mixing cylinder, then the fluid stirred passes through second fluid conveying pipe valve and flows into the inside of spray gun body, controls the input gas in the inside of spray gun body, so that the fluid in the inside of spray gun body can be sprayed by spray head body, since mixing is carried out before fluid enters the inside of spray gun body, the uniform dispersion effect of spray gun to two kinds of fluids is improved.

[0004] The second fluid conveying pipe valve in the above-mentioned application is connected with the mixing cylinder and the spray gun body respectively, which causes the two kinds of fluids to flow into the spray gun body through the second fluid conveying pipe valve before being fully mixed, thereby affecting the uniform dispersion effect of the spray gun on the material.

[0005] Based on this, the utility model discloses a kind of double fluid spray gun of material pre-dispersion function to solve above-mentioned problem. UTILITY MODEL CONTENTS

[0006] In view of the above-mentioned shortcomings existing in the prior art, the utility model provides a kind of double fluid spray gun of material pre-dispersion function.

[0007] To achieve the above object, the utility model is realized by the following technical scheme:

[0008] A kind of double fluid spray gun of material pre-dispersion function, including spray gun, the surface upper end of the spray gun is connected with mixing cylinder, the surface of the mixing cylinder is equipped with agitating mechanism, further including control valve mechanism, the control valve mechanism includes the protection cylinder being located in the inside of mixing cylinder, the inner wall of the protection cylinder is rotatably connected with reciprocating screw rod, the inner wall of the protection cylinder is slidably connected with shift rod, the inner wall of the shift rod is located on the surface of reciprocating screw rod, the bottom end of the shift rod is fixedly connected with stop block, the surface upper end of the reciprocating screw rod is fixedly connected with one-way bearing, the surface of the one-way bearing is located on the surface of agitating mechanism.

[0009] Further, the stirring mechanism comprises a stirring shaft rotatably connected to the inner wall of the mixing cylinder, a servo motor fixedly connected to the top end of the mixing cylinder, an output shaft of the servo motor fixedly connected to the top end of the stirring shaft, and an outer edge of the one-way bearing fixedly connected to the lower end of the inner wall of the stirring shaft.

[0010] Further, the lower end of the inner wall of the mixing cylinder is fixedly connected with a silica gel ring, and the surface of the stop block and the surface of the upper end of the spray gun are tightly attached to the inner surface of the silica gel ring.

[0011] Further, the surface of the upper end of the stop block is in the shape of a circular truncated cone.

[0012] Further, the lower end of the inner wall of the mixing cylinder is slidably connected with two protrusions, and the surface of the protrusions is clamped to the surface of the upper end of the spray gun.

[0013] Further, one end of the protrusion is fixedly connected with a spring piece, and the other end of the spring piece is fixedly connected to the lower end of the inner wall of the mixing cylinder.

[0014] Further, the inner wall of the protective cylinder is provided with a guide groove, and the surface of the upper end of the moving rod is slidably connected to the inner wall of the guide groove.

[0015] Further, the lower end of the surface of the protective cylinder is fixedly connected with two fixing frames, and the bottom of the fixing frame is fixedly connected to the inner wall of the mixing cylinder.

[0016] Further, the bottom of the push block is in contact with the top end of the protective cylinder.

[0017] Further, one end of the protrusion is fixedly connected with a pull rope block, and the surface of the pull rope block penetrates the spring piece and extends out of the inner wall of the mixing cylinder.

[0018] Advantages

[0019] 1. By the moving rod and the stop block, the lower end of the inner wall of the mixing cylinder is blocked, ensuring that the two materials in the mixing cylinder are fully mixed before being delivered into the spray gun. Compared with the prior art, the material is not easily flowed into the spray gun before being fully mixed. By blocking the lower end of the inner wall of the mixing cylinder, the material flow to the spray gun is blocked, thereby ensuring the uniform dispersion effect of the spray gun on the material.

[0020] 2. By pulling the pull rope block, the two protrusions are simultaneously away from the surface of the spray gun. At this time, the mixing cylinder is rotated to separate the mixing cylinder from the spray gun, so that the mixing cylinder and the spray gun can be easily flushed. If the mixing cylinder and the spray gun are not flushed, it is easy to cause blockage. By the spring piece pushing the protrusion clamped to the surface of the spray gun, the resistance of the mixing cylinder rotating on the spray gun is increased, thereby ensuring the stable installation of the mixing cylinder and the spray gun. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 It is a perspective view of a double-fluid spray gun with a material pre-dispersion function.

[0023] Figure 2 It is a sectional view of a mixing cylinder of a double-fluid spray gun with a material pre-dispersion function.

[0024] Figure 3 It is Figure 2 An enlarged view of A in the middle.

[0025] Figure 4 It is Figure 2 An enlarged view of B in the middle.

[0026] The reference numbers in the drawings represent respectively:

[0027] 1. Spray gun; 2. Mixing cylinder; 3. Stirring mechanism; 31. Stirring shaft; 32. Servo motor; 4. Valve control mechanism; 41. Guard cylinder; 42. Moving rod; 43. Reciprocating screw; 44. One-way bearing; 45. Stop block; 46. Push block; 47. Fixed frame; 48. Silicone ring; 49. Lugs; 410. Spring sheet; 411. Pulling rope block; 412. Guide groove. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] The present application will be further described below in combination with the embodiments.

[0030] In some embodiments, please refer to the drawings attached in the specification Figures 1-4The utility model provides a kind of material pre-dispersion function's double fluid spray gun, including spray gun 1, the surface of spray gun 1 is threadedly connected with mixing cylinder 2, the surface of mixing cylinder 2 is equipped with agitating mechanism 3, further include control valve mechanism 4, control valve mechanism 4 includes the protection cylinder 41 being equipped in mixing cylinder 2 inside, the inner wall of protection cylinder 41 is rotatably connected with reciprocating screw rod 43, the inner wall of protection cylinder 41 is slidably connected with shift rod 42, the inner wall of shift rod 42 is equipped in the surface of reciprocating screw rod 43, the bottom end of shift rod 42 is fixedly connected with stop block 45, the surface of reciprocating screw rod 43 upper end is fixedly connected with one-way bearing 44, the surface of one-way bearing 44 is equipped in the surface of agitating mechanism 3.

[0031] Reciprocating screw rod 43 is the screw rod that can make shift rod 42 realize reciprocating motion under the premise of not changing the rotation direction of main shaft, the manifestation of reciprocating screw rod 43 is two thread grooves with same pitch and opposite rotation direction, two ends are connected with transition curve, make the helical groove side drive shift rod 42 placed in helical groove axial reciprocating motion by the rotation of screw rod.

[0032] One-way bearing 44 is a kind of bearing that can rotate freely in one direction, and is locked in another direction. One-way bearing 44 is also called overrunning clutch, but it is named differently according to different industries and functions. Inside the metal shell of one-way bearing 44, there are many rollers, needles or balls. The shape of the rolling seat allows it to roll in only one direction, while it generates a lot of resistance in the other direction.

[0033] In the embodiment of the utility model, when pre-dispersing the spraying material, one end of the spray gun 1 is flange connected with the gas pipeline, the mixing cylinder 2 is threadedly connected with the spray gun 1, and the material conveying pipeline is flange connected with the surface of the mixing cylinder 2. The coating material such as water-based paint and the auxiliary agent such as diluent are conveyed into the mixing cylinder 2 by the material conveying pump. The agitating mechanism 3 is driven to rotate clockwise to fully agitate the material in the mixing cylinder 2, so that the two materials are fully mixed. After mixing, the compressor is manually started to compress the outside air through the gas pipeline into the spray gun 1. The agitating mechanism 3 is driven to rotate counterclockwise to drive the reciprocating screw rod 43 to rotate through the one-way bearing 44. The reciprocating screw rod 43 drives the shift rod 42 to move up. The shift rod 42 drives the stop block 45 to move up to the appropriate height. At this time, the inner wall of the mixing cylinder 2 is open at the lower end, so that the material in the mixing cylinder 2 flows into the spray gun 1. The high-speed airflow in the spray gun 1 disperses the mixed material in the spray gun 1 into fine droplets to form a fine mist or granular material for spraying on the corresponding object.

[0034] When it is necessary to block the lower end of the inner wall of the mixing cylinder 2, the agitating mechanism 3 is driven to rotate counterclockwise. The agitating mechanism 3 rotates counterclockwise to drive the reciprocating screw rod 43 to rotate through the one-way bearing 44. The reciprocating screw rod 43 drives the shift rod 42 and the stop block 45 to move down, so that the stop block 45 blocks the lower end of the inner wall of the mixing cylinder 2.

[0035] In the embodiment of the utility model, through the shift rod 42 and the block 45, the lower end of the inner wall of the mixing cylinder 2 is blocked, thereby blocking the flow of the materials in the mixing cylinder 2 into the spray gun 1, ensuring that the two materials in the mixing cylinder 2 are fully mixed and then guided into the spray gun 1. Through the one-way bearing 44, only the counterclockwise rotation of the stirring mechanism 3 can drive the reciprocating lead screw 43 to rotate, and then the position of the block 45 at the lower end of the inner wall of the mixing cylinder 2 can be adjusted, so that the lower end of the inner wall of the mixing cylinder 2 can be opened or blocked.

[0036] In some embodiments, as shown in Figure 2 and Figure 4 As a preferred embodiment of the utility model, the stirring mechanism 3 includes a stirring shaft 31 rotatably connected to the inner wall of the mixing cylinder 2. The top end of the mixing cylinder 2 is fixedly connected to a servo motor 32. The output shaft of the servo motor 32 is fixedly connected to the top end of the stirring shaft 31. The outer edge of the one-way bearing 44 is fixedly connected to the lower end of the inner wall of the stirring shaft 31. The bottom end of the stirring shaft 31 is fixedly connected to a push block 46. The bottom of the push block 46 contacts the top end of the protective cylinder 41.

[0037] The servo motor 32 refers to a motor that controls the operation of mechanical elements in a servo system. It is an auxiliary motor indirect speed changing device. The servo motor 32 can control the speed and the position accuracy is very accurate. It can convert voltage signals into torque and speed to drive the control object. The servo motor 32 rotor speed is controlled by the input signal and can quickly respond. In an automatic control system, it is used as an executive element and has the characteristics of small electromechanical time constant and high linearity. It can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft.

[0038] In the embodiment of the utility model, the servo motor 32 is manually started. The output shaft of the servo motor 32 rotates to drive the stirring shaft 31 to rotate clockwise. The clockwise rotation of the stirring shaft 31 drives the push block 46 to rotate and stirs the two materials in the mixing cylinder 2, so that the two materials are fully mixed. The rotating push block 46 scrapes off the materials accumulated on the top end of the protective cylinder 41.

[0039] When the reciprocating lead screw 43 needs to be rotated, the rotation direction of the output shaft of the servo motor 32 is manually adjusted, so that the output shaft of the servo motor 32 rotates counterclockwise, and then the stirring shaft 31 rotates counterclockwise. The counterclockwise rotating stirring shaft 31 drives the reciprocating lead screw 43 to rotate through the one-way bearing 44.

[0040] In some embodiments, as shown in Figure 3 As a preferred embodiment of the utility model, the lower end of the inner wall of the mixing cylinder 2 is fixedly connected to a silica gel ring 48. The surface of the block 45 and the surface of the upper end of the spray gun 1 are tightly attached to the inner surface of the silica gel ring 48. The surface of the block 45 is in the shape of a circular truncated cone.

[0041] In some embodiments, such as Figure 3 As shown, in a preferred embodiment of the present invention, two protrusions 49 are slidably connected to the lower end of the inner wall of the mixing cylinder 2. The surface of the protrusions 49 is engaged with the upper surface of the spray gun 1. One end of the protrusions 49 is fixedly connected to a spring piece 410, and the other end of the spring piece 410 is fixedly connected to the lower end of the inner wall of the mixing cylinder 2. A guide groove 412 is provided on the inner wall of the protective cylinder 41. The upper surface of the moving rod 42 is slidably connected to the inner wall of the guide groove 412. Two fixing brackets 47 are fixedly connected to the lower end of the surface of the protective cylinder 41. The bottom of the fixing brackets 47 is fixedly connected to the inner wall of the mixing cylinder 2. One end of the protrusions 49 is fixedly connected to a pull rope block 411. The surface of the pull rope block 411 penetrates the spring piece 410 and extends out of the inner wall of the mixing cylinder 2.

[0042] In this embodiment of the invention, after the surface thread of the mixing cylinder 2 is installed on the spray gun 1, the elastic force of the spring piece 410 pushes the protrusion 49 to move, so that the protrusion 49 is engaged with the upper surface of the spray gun 1.

[0043] In this embodiment of the utility model, by pulling the rope block 411, the two protrusions 49 are simultaneously moved away from the surface of the spray gun 1. At this time, the mixing cylinder 2 is rotated to separate the mixing cylinder 2 from the spray gun 1, which makes it convenient to rinse the inside of the mixing cylinder 2 and the spray gun 1. This avoids the inconvenience of rinsing the inside of the mixing cylinder 2 and the spray gun 1, which can easily cause blockage. The spring piece 410 pushes the protrusions 49 to engage with the surface of the spray gun 1, which increases the resistance of the mixing cylinder 2 rotating on the spray gun 1 and ensures the stable installation of the mixing cylinder 2 and the spray gun 1.

[0044] It should be noted that the spray gun 1, mixing cylinder 2, stirring shaft 31, servo motor 32, reciprocating screw 43, one-way bearing 44, protective cylinder 41 and spring 410 mentioned above are all components with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the servo motor 32 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dual-fluid spray gun with material pre-dispersion function, comprising a spray gun (1), wherein a mixing cylinder (2) is threadedly connected to the upper end of the surface of the spray gun (1), and an agitation mechanism (3) is provided on the surface of the mixing cylinder (2), characterized in that: It also includes a control valve mechanism (4), which includes a protective cylinder (41) located inside the mixing cylinder (2). The inner wall of the protective cylinder (41) is rotatably connected to a reciprocating screw (43), and the inner wall of the protective cylinder (41) is slidably connected to a moving rod (42). The inner wall of the moving rod (42) is located on the surface of the reciprocating screw (43). The bottom end of the moving rod (42) is fixedly connected to a stop block (45), and the upper end of the surface of the reciprocating screw (43) is fixedly connected to a one-way bearing (44). The surface of the one-way bearing (44) is located on the surface of the stirring mechanism (3).

2. The dual-fluid spray gun with material pre-dispersion function according to claim 1, characterized in that, The stirring mechanism (3) includes a stirring shaft (31) rotatably connected to the inner wall of the mixing cylinder (2), a servo motor (32) is fixedly connected to the top of the mixing cylinder (2), the output shaft of the servo motor (32) is fixedly connected to the top of the stirring shaft (31), and the outer edge of the one-way bearing (44) is fixedly connected to the lower end of the inner wall of the stirring shaft (31).

3. The dual-fluid spray gun with material pre-dispersion function according to claim 1, characterized in that, A silicone ring (48) is fixedly connected to the lower end of the inner wall of the mixing cylinder (2), and the surface of the baffle (45) and the upper end of the surface of the spray gun (1) are both in close contact with the inner surface of the silicone ring (48).

4. The dual-fluid spray gun with material pre-dispersion function according to claim 1, characterized in that, The upper surface of the stop (45) is frustum-shaped.

5. The dual-fluid spray gun with material pre-dispersion function according to claim 1, characterized in that, The lower end of the inner wall of the mixing cylinder (2) is slidably connected to two protrusions (49), and the surface of the protrusions (49) is engaged with the upper surface of the spray gun (1).

6. The dual-fluid spray gun with material pre-dispersion function according to claim 5, characterized in that, One end of the protrusion (49) is fixedly connected to a spring piece (410), and the other end of the spring piece (410) is fixedly connected to the lower end of the inner wall of the mixing cylinder (2).

7. The dual-fluid spray gun with material pre-dispersion function according to claim 1, characterized in that, The inner wall of the protective sleeve (41) is provided with a guide groove (412), and the upper surface of the moving rod (42) is slidably connected to the inner wall of the guide groove (412).

8. The dual-fluid spray gun with material pre-dispersion function according to claim 1, characterized in that, Two fixing brackets (47) are fixedly connected to the lower end of the surface of the casing (41), and the bottom of the fixing brackets (47) is fixedly connected to the inner wall of the mixing cylinder (2).

9. The dual-fluid spray gun with material pre-dispersion function according to claim 2, characterized in that, A pusher block (46) is fixedly connected to the bottom end of the stirring shaft (31), and the bottom of the pusher block (46) contacts the top end of the protective cylinder (41).

10. The dual-fluid spray gun with material pre-dispersion function according to claim 5, characterized in that, One end of the protrusion (49) is fixedly connected to a pull rope block (411), the surface of which penetrates the spring piece (410) and extends out of the inner wall of the mixing cylinder (2).

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