Liquid flow uniform adjusting device for sprayer

Abstract

The invention relates to the technical field of sprayers, and discloses a liquid flow uniform adjusting device for a sprayer, which comprises a flow control valve pipe, an annular valve seat is arranged in the flow control valve pipe close to the liquid outlet end, a sliding block is arranged in the flow control valve pipe in a sliding manner, and a valve core assembly is arranged in the center of the bottom of the sliding block; the valve element assembly comprises a valve element, a connecting column and a flow guide rotary pipe, the connecting column is fixedly installed in the center of the bottom of the sliding block, the valve element is installed at the bottom end of the connecting column, and the flow guide rotary pipe is rotationally connected to the outer portion of the connecting column in a sleeving mode. Liquid guided into the liquid inlet pipe is located on the side of the flow guide rotating pipe, the liquid guided-into path of the liquid inlet pipe is located on the rotating tangent line of the flow guide rotating pipe, and a flow regulation and control driving piece is installed at the top in the flow control valve pipe. The liquid flow uniform adjusting device for the sprayer realizes uniform adjustment and accurate control of the liquid flow, adapts to different working conditions, reduces turbulent flow, and improves the stability and reliability of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of sprayers, and specifically to a device for uniformly adjusting the liquid flow rate of a sprayer. Background Art

[0002] In spraying operations, the uniform adjustment of the liquid flow rate is crucial for ensuring the spraying effect. There are many problems with the traditional liquid flow rate adjustment devices of sprayers.

[0003] On the one hand, it is difficult to ensure the uniformity of flow rate adjustment. During the liquid flow process of existing devices, the situation of uneven liquid distribution easily occurs, resulting in inconsistent spraying thickness and affecting the coating quality. For example, some simple throttle valve adjustment methods cannot effectively preprocess the liquid flow, making the liquid in a disordered state when entering the adjustment area and difficult to achieve uniform adjustment.

[0004] On the other hand, the accuracy of flow rate adjustment is insufficient. Some devices are difficult to accurately change the liquid flow rate according to actual needs and cannot meet the strict requirements for flow rate in different spraying scenarios. Traditional adjustment structures often have a large error range when adjusting the flow rate and cannot well adapt to the complex and changeable spraying work.

[0005] In addition, the existing devices have poor adaptability to the impact force of the liquid pumped into the pump body of different sprayers. When the impact force of the liquid output by the pump body changes, the stability of the device is affected, and even the adjustment function may fail. For example, when facing a large impact force, the internal structure of some devices is easily damaged, or the flow rate adjustment function cannot be normally realized.

[0006] At the same time, when the liquid flows in the device, due to unreasonable structural design, turbulent flow is likely to occur. Turbulent flow will not only increase the resistance of the liquid flow, reduce the efficiency of flow rate adjustment, but also further affect the uniformity and stability of the liquid flow rate, greatly reducing the spraying effect.

[0007] In summary, the existing liquid flow rate adjustment devices for sprayers have obvious deficiencies in aspects such as uniform flow rate adjustment, precise control, adaptation to different impact forces, and reduction of turbulent flow, and an innovative solution is urgently needed to improve the quality and efficiency of spraying operations. Summary of the Invention

[0008] (1) Technical Problems to be Solved

[0009] In view of the deficiencies of the prior art, the present invention provides a device for uniformly adjusting the liquid flow rate of a sprayer to solve the above problems.

[0010] (2) Technical Solutions

[0011] To achieve the above object, the present invention provides the following technical solution: A liquid flow rate uniform adjustment device for a sprayer, including a flow control valve pipe. An annular valve seat is installed at a position near the liquid outlet end inside the flow control valve pipe. A slider is slidably installed in the flow control valve pipe. A valve core assembly is installed at the center of the bottom of the slider. The valve core assembly includes a valve core, a connecting column, and a diversion swirl pipe. The connecting column is fixedly installed at the center of the bottom of the slider. The valve core is installed at the bottom end of the connecting column. The diversion swirl pipe is rotatably sleeved outside the connecting column. A liquid inlet pipe for receiving the liquid output from the pump body is provided on the side of the flow control valve pipe. The liquid introduced by the liquid inlet pipe is located on the side of the diversion swirl pipe and the liquid introduction route of the liquid inlet pipe is located on the rotation tangent of the diversion swirl pipe. A flow control driving member for driving the slider to slide up and down to adjust the distance between the valve core and the annular valve seat is installed at the top inside the flow control valve pipe.

[0012] As a preferred technical solution of the present invention, the diversion swirl pipe is specifically docked with the outer ring of the bearing provided inside the connecting column.

[0013] As a preferred technical solution of the present invention, spiral diversion grooves are provided on the outer pipe wall of the diversion swirl pipe.

[0014] As a preferred technical solution of the present invention, the inner ring opening at the top end of the annular valve seat is provided with a chamfer with a radius of 6 mm.

[0015] As a preferred technical solution of the present invention, the valve core is integrally set in the shape of an inverted truncated cone. The diameter of the lower end face of the valve core is set to be half of the inner ring diameter of the annular valve seat, and the diameter of the upper end face of the valve core is set to be four-fifths of the inner ring diameter of the annular valve seat.

[0016] As a preferred technical solution of the present invention, the flow control driving member includes a servo motor, a driving lead screw, and a lead screw sleeve. The servo motor is installed at the top inside the flow control valve pipe. The lead screw sleeve is installed at the center of the top of the slider. The driving lead screw is docked on the output end of the servo motor, and the driving lead screw is threadedly inserted into the inside of the lead screw sleeve.

[0017] As a preferred technical solution of the present invention, guiding components for cooperating with the sliding of the slider are installed at four positions of the front, rear, left, and right of the bottom housing of the servo motor.

[0018] As a preferred technical solution of the present invention, the guiding component includes a guiding sleeve and a guiding column. The guiding column is docked on the bottom housing of the servo motor. The guiding sleeve is installed at the top of the slider, and the bottom end of the guiding column is slidably inserted into the inside of the guiding sleeve.

[0019] As a preferred technical solution of the present invention, the edge at the top end of the valve core is provided with a chamfer with a radius of 6 mm.

[0020] As a preferred technical solution of the present invention, a flow sensor is installed inside the inner wall of the flow control valve pipe near the liquid outlet end, and the flow sensor is electrically connected to the servo motor.

[0021] Compared with the prior art, the present invention provides a liquid flow rate uniform adjustment device for a sprayer, having the following beneficial effects:

[0022] Uniform flow rate adjustment: Through the unique design of the diversion swirl tube in the present invention, when the liquid enters the flow control valve tube through the liquid inlet pipe and impacts the diversion swirl tube, the spiral diversion grooves on the outer tube wall of the diversion swirl tube can conduct preliminary swirl guidance on the liquid. At the same time, the diversion swirl tube rotates under the impact, enabling the liquid to achieve spiral rotation and uniform reverse flow when filling the space below the slider and discharging at the liquid outlet end, forming a relatively uniform flow state, which helps the uniformity of subsequent flow rate adjustment, can effectively avoid the adverse effects of uneven liquid flow rate on the spraying effect, and ensure the stability of the spraying quality.

[0023] Precise flow rate adjustment: A special gradually changing annular diversion gap is formed between the valve core and the annular valve seat. The valve core is integrally arranged in an inverted frustum shape, with the diameter of its lower end face being half of the inner ring diameter of the annular valve seat and the diameter of its upper end face being four-fifths of the inner ring diameter of the annular valve seat. When the flow rate control driving member drives the slider to slide up and down, it can accurately change the size of the gap between the valve core and the annular valve seat, thereby achieving precise adjustment of the liquid flow rate and meeting the precise requirements of different spraying operations for the liquid flow rate.

[0024] Adapt to different impact forces: The design of the diversion swirl tube can adapt to the impact forces of different sprayer pump bodies when pumping liquids into the interior of this adjustment device. When the liquid impacts on the diversion swirl tube, the impact force can be converted into the driving force for driving the diversion swirl tube to rotate, ensuring the stable operation of the device under different working conditions and improving the versatility and reliability of the device.

[0025] Reduce turbulence: The inner ring opening at the top of the annular valve seat is provided with a chamfer with a radius of 6 mm, and the top edge of the valve core is also provided with a chamfer with a radius of 6 mm. This design can, on the one hand, avoid the generation of turbulence of the liquid due to sharp edges during the flow process, and on the other hand, optimize the fit between the valve core and the annular valve seat, reduce the resistance during liquid flow, help improve the uniformity and stability of liquid flow rate adjustment, and make the liquid flow more smoothly inside the device.

[0026] Precise guidance and stable adjustment: The guiding component in the flow rate control driving member precisely guides the slider during the up and down sliding process. The bottom end of the guiding column is slidably inserted into the interior of the guiding sleeve, preventing the slider from shifting or shaking during the sliding process, ensuring that the valve core can accurately approach or move away from the annular valve seat, guaranteeing the accuracy and stability of flow rate adjustment, and thus achieving precise control of the liquid flow rate.

[0027] Automatic precise control: A flow sensor is installed inside the inner wall of the flow control valve tube near the liquid outlet end, and it is electrically connected to the servo motor. The flow sensor can monitor the liquid flow rate passing through the flow control valve tube in real time and feed the flow data back to the servo motor. The servo motor automatically adjusts its rotation state according to the received flow data, drives the valve core to perform corresponding position adjustment, realizes automatic precise control of the liquid flow rate, ensures that the spraying device can always maintain a stable and uniform liquid output flow rate during operation, and improves the automation degree and work efficiency of the spraying operation.

[0028] In summary, the liquid flow rate uniform adjustment device for the spraying device of the present invention realizes uniform adjustment and precise control of the liquid flow rate through a variety of innovative designs, adapts to different working conditions, reduces turbulent flow, improves the stability and reliability of the device, provides a high-quality flow rate adjustment solution for the spraying operation, and has significant economic benefits and practical value. Brief description of the drawings

[0029] Figure 1 It is a schematic diagram of the internal structure of the present invention in the state of reducing the flow rate;

[0030] Figure 2 It is a schematic diagram of the internal structure of the present invention in the state of increasing the flow rate;

[0031] Figure 3 It is a schematic diagram of the half-section structure of the valve core assembly of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the diversion swirl tube of the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the flow rate regulation driving member of the present invention;

[0034] Figure 6 It is a schematic diagram of the structure of the guiding component of the present invention.

[0035] Among them: 1. Flow control valve tube; 2. Annular valve seat; 3. Valve core assembly; 4. Slide block; 5. Flow rate regulation driving member; 6. Guiding component; 7. Liquid inlet pipe; 8. Flow sensor;

[0036] 31. Valve core; 32. Connecting column; 33. Diversion swirl tube; 34. Bearing;

[0037] 331. Spiral diversion groove;

[0038] 51. Servo motor; 52. Driving lead screw; 53. Lead screw sleeve;

[0039] 61. Guiding sleeve; 62. Guiding column. Detailed implementation manners

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the invention.

[0041] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, "a plurality of" means two or more. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the invention.

[0043] Please refer to Figure 1-6 , a liquid flow rate uniform adjustment device for a sprayer, which includes a flow control valve tube 1. An annular valve seat 2 is installed at a position close to the liquid outlet end inside the flow control valve tube 1. A slider 4 is slidably installed in the flow control valve tube 1. A valve core assembly 3 is installed at the center of the bottom of the slider 4. The valve core assembly 3 includes a valve core 31, a connecting column 32, and a diversion swirl tube 33. The connecting column 32 is fixedly installed at the center of the bottom of the slider 4. The valve core 31 is installed at the bottom end of the connecting column 32. The diversion swirl tube 33 is rotatably sleeved outside the connecting column 32. A liquid inlet pipe 7 for receiving the liquid output from the pump body is arranged on the side of the flow control valve tube 1. The liquid introduced by the liquid inlet pipe 7 is located on the side of the diversion swirl tube 33 and the liquid introduction route of the liquid inlet pipe 7 is located on the tangent of the rotation of the diversion swirl tube 33. A flow control driving member 5 for driving the slider 4 to slide up and down to adjust the distance between the valve core 31 and the annular valve seat 2 is installed at the top inside the flow control valve tube 1.

[0044] The diversion swirler 33 is specifically docked with the outer ring of the bearing 34 arranged inside the connecting column 32, enabling the diversion swirler 33 to rotate flexibly on the connecting column 32. A spiral diversion groove 331 is arranged on the outer pipe wall of the diversion swirler 33. When the liquid is introduced through the liquid inlet pipe 7, the liquid impacts on the diversion swirler 33, and the spiral diversion groove 331 can conduct preliminary swirling guidance on the liquid. At the same time, the diversion swirler 33 rotates under the impact until the space below the slider 4 is completely filled with the liquid and discharged from the liquid outlet end of the flow control valve pipe 1, realizing the operation of spiral rotation and uniform backflow, forming a relatively uniform flow trend, which is helpful for the uniformity of subsequent flow regulation. At the same time, this design can also adapt to the impact force of different sprayer pumps sucking the liquid into the inside of this regulating device, that is, it can convert the impact force into the operation of driving the diversion swirler 33 to rotate when being impacted.

[0045] The inner ring opening at the top of the annular valve seat 2 is provided with a chamfer with a radius of 6 mm. This chamfer design can, on the one hand, prevent the liquid from generating turbulence due to the sharp edge during the flowing process.

[0046] The valve core 31 is integrally set in the shape of an inverted truncated cone. The diameter of the lower end face of the valve core 31 is set to be half of the inner ring diameter of the annular valve seat 2, and the diameter of the upper end face of the valve core 31 is set to be four-fifths of the inner ring diameter of the annular valve seat 2. This special shape design makes a gradually changing annular diversion gap formed between the valve core 31 and the annular valve seat 2. When the flow control driving member 5 drives the slider 4 to slide up and down, the gap size between the valve core 31 and the annular valve seat 2 can be accurately changed, thereby realizing the precise regulation of the liquid flow rate.

[0047] The flow control driving member 5 includes a servo motor 51, a driving lead screw 52 and a lead screw sleeve 53. The servo motor 51 is installed at the top inside the flow control valve pipe 1, the lead screw sleeve 53 is installed at the center of the top of the slider 4, the driving lead screw 52 is docked on the output end of the servo motor 51, and the driving lead screw 52 is threadedly connected inside the lead screw sleeve 53. After the servo motor 51 is started, the driving lead screw 52 will perform a rotational motion inside the lead screw sleeve 53. Since the lead screw sleeve 53 is fixedly connected to the slider 4, the rotational motion of the driving lead screw 52 will be converted into the up and down linear motion of the slider 4, and then drive the valve core 31 to approach or move away from the annular valve seat 2 to realize the regulation of the flow rate.

[0048] Guide components 6 for cooperating with the sliding of the slider 4 are installed at the front, rear, left, and right positions of the bottom housing of the servo motor 51. The guide component 6 includes a guide sleeve 61 and a guide post 62. The guide post 62 is docked on the bottom housing of the servo motor 51, the guide sleeve 61 is installed on the top of the slider 4, and the bottom end of the guide post 62 is slidably inserted into the interior of the guide sleeve 61. The function of the guide component 6 is to precisely guide the slider 4 during the up and down sliding process, prevent the slider 4 from shifting or wobbling during the sliding process, ensure that the valve core 31 can accurately approach or move away from the annular valve seat 2, and guarantee the accuracy and stability of flow regulation.

[0049] The top edge of the valve core 31 is provided with a chamfer with a radius of 6 mm. This chamfer design corresponds to the chamfer at the top of the annular valve seat 2, further optimizing the fit between the valve core 31 and the annular valve seat 2, reducing the resistance and turbulent flow phenomenon during liquid flow, and contributing to improving the uniformity and stability of liquid flow regulation.

[0050] A flow sensor 8 is installed inside the inner wall of the flow control valve pipe 1 near the liquid outlet end. The flow sensor 8 is electrically connected to the servo motor 51. The flow sensor 8 can real-time monitor the size of the liquid flow passing through the flow control valve pipe 1 and feedback the flow data to the servo motor 51. The servo motor 51 automatically adjusts its rotation state according to the received flow data, drives the valve core 31 to perform corresponding position adjustments, thereby realizing the automatic and precise control of the liquid flow, and ensuring that the spraying device can always maintain a stable and uniform liquid output flow during the working process.

[0051] The working process is as follows:

[0052] The liquid enters the flow control valve pipe 1 through the inlet pipe 7 and impacts on the diversion swirl pipe 33.

[0053] The spiral diversion grooves 331 on the outer wall of the diversion swirl pipe 33 conduct preliminary swirl guidance on the liquid, and at the same time, the diversion swirl pipe 33 rotates under the impact.

[0054] Under the action of the diversion swirl pipe 33, the space below the slider 4 is gradually filled with liquid and discharged from the liquid outlet end of the flow control valve pipe 1, realizing spiral rotation and uniform backflow, and forming a relatively uniform flow state.

[0055] The flow control driving member 5 works, the servo motor 51 is started, and the driving lead screw 52 rotates in the lead screw sleeve 53.

[0056] Since the lead screw sleeve 53 is fixedly connected to the slider 4, the rotational motion of the driving lead screw 52 is converted into the up and down linear motion of the slider 4.

[0057] The slider 4 drives the valve core 31 to approach or move away from the annular valve seat 2, changing the gap size between the valve core 31 and the annular valve seat 2, thereby realizing the precise regulation of the liquid flow.

[0058] The flow sensor 8 monitors the magnitude of the liquid flow through the flow control valve pipe 1 in real time and feeds back the flow data to the servo motor 51.

[0059] According to the received flow data, the servo motor 51 automatically adjusts its own rotation state, drives the valve core 31 to perform corresponding position adjustment, realizes the automatic and precise control of the liquid flow, and ensures that the spraying device can always maintain a stable and uniform liquid output flow during the working process.

[0060] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0061] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed invention.

[0062] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid flow uniformity regulating device for a sprayer, comprising a flow control valve tube (1), characterized in that: An annular valve seat (2) is installed inside the flow control valve tube (1) near the liquid outlet end. A slider (4) is slidably installed inside the flow control valve tube (1). A valve core assembly (3) is installed at the bottom center of the slider (4). The valve core assembly (3) comprises a valve core (31), a connecting column (32) and a flow guide vortex (33). The connecting column (32) is fixedly installed at the bottom center of the slider (4). The valve core (31) is installed at the bottom end of the connecting column (32). The flow guide vortex (33) The flow control valve tube (1) is rotatably sleeved on the outside of the connecting column (32). A liquid inlet pipe (7) for receiving liquid output by the pump body is arranged on the side of the flow control valve tube (1). The liquid introduced by the liquid inlet pipe (7) is located on the side of the flow guide vortex (33) and the liquid introduction route of the liquid inlet pipe (7) is located on the rotation tangent of the flow guide vortex (33). The top of the flow control valve tube (1) is installed with a flow control driving member (5) for driving the slider (4) to slide up and down so as to adjust the distance between the valve core (31) and the annular valve seat (2).

2. The liquid flow uniformity regulating device for a sprayer according to claim 1, characterized in that: The flow guide vortex tube (33) is specifically connected to the outer ring of the bearing (34) arranged inside the connecting column (32).

3. The liquid flow uniformity regulating device for a sprayer according to claim 1, characterized in that: The outer tube wall of the flow-guiding spiral tube (33) is provided with a spiral flow-guiding groove (331).

4. The liquid flow uniformity regulating device for a sprayer according to claim 1, characterized in that: The inner ring opening at the top end of the annular valve seat (2) is arranged as a chamfer with a radius of 6 mm.

5. The liquid flow uniformity regulating device for a sprayer according to claim 1, characterized in that: The valve core (31) is configured as an inverted truncated cone as a whole, the diameter of the lower end surface of the valve core (31) is configured to be half the diameter of the inner ring of the annular valve seat (2), and the diameter of the upper end surface of the valve core (31) is configured to be four fifths of the diameter of the inner ring of the annular valve seat (2).

6. The liquid flow uniformity regulating device for a sprayer according to claim 1, characterized in that: The flow control driving member (5) comprises a servo motor (51), a driving screw (52) and a screw sleeve (53); the servo motor (51) is installed at the top end of the flow control valve tube (1); the screw sleeve (53) is installed at the center of the top of the slider (4); the driving screw (52) is connected to the output end of the servo motor (51); and the driving screw (52) is threadedly connected to the inside of the screw sleeve (53).

7. The liquid flow uniformity regulating device for a sprayer according to claim 1, characterized in that: Guide components (6) that cooperate with the sliding block (4) to slide are installed at the four positions of the front, back, left, and right of the bottom housing of the servo motor (51).

8. The liquid flow uniformity regulating device for a sprayer according to claim 1, characterized in that: The guide assembly (6) comprises a guide sleeve (61) and a guide column (62), wherein the guide column (62) is connected to the bottom housing of the servo motor (51), the guide sleeve (61) is installed on the top of the slider (4), and the bottom end of the guide column (62) is slidably inserted into the inside of the guide sleeve (61).

9. The liquid flow uniformity regulating device for a sprayer according to claim 1, characterized in that: The top edge of the valve core (31) is configured as a chamfer with a radius of 6 mm.

10. The liquid flow uniformity regulating device for a sprayer according to claim 6, characterized in that: A flow sensor (8) is installed inside the inner wall of the flow control valve tube (1) close to the liquid outlet end, and the flow sensor (8) is electrically connected to the servo motor (51).

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