A paint mixing and cleaning device

Abstract

The utility model belongs to paint mixing cleaning device field discloses a kind of paint mixing cleaning device, and the setting of spring, valve core and injection joint forms one-way conducting mechanism, forward flow, when fluid pressure (from injection pressure P1 of injection joint into one-way pipeline) > spring pre-tightening force (spring rebound force) + back pressure (the pressure P2 in cavity) time, valve core is opened by fluid, fluid enters initial mixer inside;Reverse cut-off, when P2≥P1, valve core is sealed with the interface of injection joint under the rebound force of spring and fluid pressure, and then when paint is separately injected, paint cannot flow out from the injection joint corresponding to cleaning pipeline, and cleaning fluid is separately injected, paint cannot flow out from the injection joint corresponding to conveying pipeline, and then without manpower to control valve can play sealing effect, avoid the link of manual operation valve error, and more manpower is saved when using.

Description

Technical Field

[0001] This utility model belongs to the technical field of paint mixing and cleaning devices, and specifically relates to a paint mixing and cleaning device. Background Technology

[0002] Some steel pipelines used in fields such as petroleum, natural gas, water conservancy, municipal engineering, and marine engineering require painting operations. Since some paints may be composed of two or more coatings, and the mixture of multiple coatings can easily solidify into a film after a chemical reaction in a short time, it is necessary to prepare the paint on-site before use. In this process, a mixing device is usually used to assist in the mixing. Due to its easy curing characteristics, the mixing device needs to be cleaned in time after the painting is completed, otherwise the paint may cause blockage of the mixing device after curing.

[0003] Existing mixing and cleaning devices are mostly divided into two types. One type has independent mixing and cleaning structures for the paint. During mixing, the paint nozzle is connected to inject paint into the mixing device, and during cleaning, the paint nozzle is removed and a cleaning nozzle is connected to clean the mixing device. Although this method eliminates the risk of cleaning fluid backflow damaging the paint, the paint cures quickly after mixing, requiring workers to be able to change jobs quickly after operation stops. This places high demands on workers, is labor-intensive, and frequent disassembly and assembly can accelerate the fatigue of components and reduce their service life.

[0004] Another type is where the cleaning device and the mixing device are integrated. The paint nozzle and the cleaning nozzle are set separately and fixed inside the mixing device. In order to prevent the liquid backflow in the mixing device from damaging the paint ratio, a high-pressure ball valve is installed at the nozzle. However, in order to ensure the cleaning effect and reduce space occupation, the paint nozzle and the cleaning nozzle are set close to each other. When the worker operates, the ball valve is easy to open or close incorrectly, which will affect the paint ratio. Utility Model Content

[0005] The present invention aims to provide a paint mixing and cleaning device to reduce or avoid the problem of operators accidentally opening or closing the corresponding valves.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a paint mixing and cleaning device, comprising... The primary mixer has an output pipe, the end of which is connected to multiple conveying pipes located in the primary mixer. The end of the conveying pipes is connected to a cleaning pipe located in the primary mixer. The primary mixer has multiple one-way pipes, which are connected to the cleaning pipes or conveying pipes. An injection connector is installed on the outside of the one-way pipe, and the end of the injection connector has an interface. A one-way valve assembly is installed inside a one-way pipe. The one-way valve assembly includes a spring and a valve core. The two ends of the spring are connected to the inner wall of the one-way pipe and the valve core, respectively. The valve core is adapted to the interface.

[0007] The principle and effects of this technical solution: 1. By setting up a spring, valve core, and injection connector, a one-way flow mechanism is formed. In the forward flow, when the fluid pressure (injection pressure P1 from the injection connector into the one-way pipe) > spring preload (spring rebound force) + back pressure (pressure P2 inside the cavity), the valve core is pushed open by the fluid, and the fluid enters the premixer. In the reverse cutoff, when P2 ≥ P1, the valve core abuts against the interface of the injection connector under the action of the spring rebound force and fluid pressure, thus sealing the valve. When the paint is injected separately, the paint cannot flow out from the injection connector corresponding to the cleaning pipe, and when the cleaning fluid is injected separately, the paint cannot flow out from the injection connector corresponding to the delivery pipe. Therefore, the sealing effect can be achieved without manual valve control, avoiding errors caused by manual valve operation and saving manpower during use.

[0008] 2. The system connects the output pipe to the delivery pipe, the delivery pipe to the cleaning pipe, and the one-way pipe. The one-way pipe is also connected to the cleaning pipe. The cleaning fluid enters the one-way pipe through the injection connector, flows through the cleaning pipe to the delivery pipe, and then flows through the delivery pipe to the one-way pipe corresponding to the delivery pipe and to the output pipe. This completes the cleaning of the internal parts of the primary mixer. Due to the one-way valve assembly, the mixing ratio of the paint raw materials is not disrupted during the cleaning process. Although the paint raw materials can reach the one-way pipe corresponding to the cleaning pipe through the above-mentioned pipes, the paint cannot flow out of the one-way pipe due to the one-way valve, thus avoiding excessive waste of paint raw materials.

[0009] 3. This solution, through the setting of multiple injection connectors, can simultaneously connect the cleaning injection connector and the paint injection connector without the need for manual disassembly and replacement. The integrated setting saves more manpower during cleaning and mixing, and the operation steps are simpler.

[0010] The present invention is further configured to include a final mixer, which includes a final mixing tube, a spiral mixing core, and a spray connector. The final mixing tube is installed on the side wall of the primary mixer and is connected to the output pipe. The spray connector is installed at the end of the final mixing tube, and the spiral mixing core is rotatably installed inside the final mixing tube.

[0011] The principle and effect of this technical solution: By further installing a final mixer at the end of the output pipe, the mixing effect between different coatings can be improved, allowing different coatings to be fully mixed. Furthermore, by rotating the spiral mixing core installed inside the final mixing pipe, the high-pressure coating injected through the injection connector drives the spiral mixing core to rotate. Thus, the spiral mixing core can spontaneously complete its rotation under pressure, thereby stirring, mixing, and conveying the coating flowing through the final mixing pipe without the need for an additional power component to drive the spiral mixing core, thereby saving more energy. The final mixer as a whole constitutes a static mixer.

[0012] The present invention is further configured such that: the spiral mixing core includes multiple forward and reverse blades rotatably installed in the final mixing tube, with the forward and reverse blades arranged at intervals.

[0013] The principle and effect of this technical solution: By setting the blades in opposite directions, the fluid can be fully mixed radially, thus improving the effect of static mixing and stirring.

[0014] The present invention is further configured such that: the end of the unidirectional pipe is connected to a transition pipe opened in the primary mixer, the diameter of the transition pipe is smaller than that of the unidirectional pipe, the cleaning pipe and the conveying pipe respectively, and the transition pipe is connected to the conveying pipe or the cleaning pipe.

[0015] The principle and effect of this technical solution: By reducing the diameter of the transition pipe, the liquid flowing through the transition pipe can be pressurized and sprayed out, which improves the fluidity of the liquid, allows the coatings in different delivery pipes to mix more thoroughly after collision, and allows the cleaning fluid to flush each pipe more forcefully during cleaning.

[0016] The present invention is further configured such that the diameter of the output pipe is smaller than the diameter of the delivery pipe.

[0017] The principle and effect of this technical solution: By reducing the diameter, the liquid flowing from the delivery pipe into the output pipe can be pressurized and accelerated, thereby improving the cleaning or mixing effect.

[0018] The present invention is further configured such that the forward-facing blade core and the reverse-facing blade core are detachably connected.

[0019] The principle and effect of this technical solution: The detachable connection facilitates subsequent individual disassembly, cleaning, maintenance and replacement.

[0020] The present invention is further configured such that: the valve core is a ball core, and the cross-section of the interface is arc-shaped.

[0021] The principle and effect of this technical solution: By setting the interface between the ball core and the arc-shaped cross section, the ball core can be more easily adapted to the interface and pressed tightly under the drive of the spring and back pressure. Attached Figure Description

[0022] Figure 1 This is an isometric structural diagram of the present invention; Figure 2 for Figure 1 Top view cross-sectional structural diagram; Figure 3 for Figure 1 Top view of the structure; Figure 4 for Figure 3 Cross-sectional view of the structure at point BB; Figure 5 for Figure 1 The structural diagram without a primary mixer. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: The reference numerals in the accompanying drawings include: 110. Primary mixer; 111. Output pipe; 112. Conveying pipe; 113. Cleaning pipe; 114. One-way pipe; 115. Transition pipe; 210. Injection connector; 211. Interface; 310. Spring; 320. Ball core; 410. Final mixing tube; 420. Forward-facing blade core; 430. Reverse-facing blade core; 440. Ejector connector; 510. Sealing plug.

[0024] Example: As attached Figure 1-5As shown, this utility model discloses a paint mixing and cleaning device, including a primary mixer 110, a one-way valve assembly, and a final mixer. An output pipe 111 is provided on one side of the primary mixer 110. The end of the output pipe 111 is connected to multiple conveying pipes 112 opened in the primary mixer 110 (in this embodiment, two conveying pipes 112 are used as an example to correspond with the accompanying drawings). The end of the conveying pipes 112 is connected to a cleaning pipe 113 opened in the primary mixer 110. The axial direction of the cleaning pipe 113 is perpendicular to the axial direction of the conveying pipes 112. The primary mixer 110 has multiple one-way pipes 114 (four one-way pipes 114 in the case of two conveying pipes 112). The one-way pipes 114 and the cleaning pipes 113... Alternatively, the conveying pipe 112 can be connected (two one-way pipes 114 are connected to two cleaning pipes 113 respectively, and the other two one-way pipes 114 are connected to the conveying pipe 112 respectively). The conveying pipe 112, one-way channels, and output pipe 111 are all located on a horizontal plane. The cleaning pipe 113 is set vertically. An injection connector 210 is installed on the outside of the one-way pipe 114. The end of the injection connector 210 has an arc-shaped interface 211. The injection connector 210 is connected to a high-pressure pipe. In this scheme, the upper injection connector 210 (corresponding to the conveying pipe 112) is connected to a high-pressure coating pipe, and the lower injection connector 210 (corresponding to the cleaning pipe 113) is connected to a high-pressure cleaning pipe.

[0025] A one-way valve assembly is provided inside the one-way pipe 114. The one-way valve assembly includes a spring 310 and a valve core. The two ends of the spring 310 are connected to the inner wall of the one-way pipe 114 and the valve core, respectively. The valve core is a ball core 320, which is adapted to the interface 211.

[0026] The end of the one-way pipe 114 is connected to a transition pipe 115 located in the primary mixer 110. The diameter of the transition pipe 115 is smaller than that of the one-way pipe 114, the cleaning pipe 113, and the conveying pipe 112. The transition pipe 115 is connected to the conveying pipe 112 or the cleaning pipe 113. The diameter of the output pipe 111 is smaller than that of the conveying pipe 112.

[0027] The final mixer includes a final mixing tube 410, a spiral mixing core, and an outlet connector 440. The final mixing tube 410 is installed on the side wall of the primary mixer 110 and is connected to the output pipe 111. The outlet connector 440 is installed at the end of the final mixing tube 410. The spiral mixing core is rotatably installed inside the final mixing tube 410. The spiral mixing core includes multiple forward-facing blades 420 and reverse-facing blades 430 rotatably installed inside the final mixing tube 410. The forward-facing blades 420 and reverse-facing blades 430 are arranged at intervals and are detachably connected. The blades consist of a rotor and spiral blades disposed outside the rotor shaft, which is an existing structure and will not be described in detail here. The final mixer as a whole is a static mixer.

[0028] Specifically, the injection connector 210 has a channel with a minimum diameter of 8mm, which is connected to the interface 211. The ball core 320 is a φ12mm round steel ball, hardened with GCr15 (HRC60±2) or tungsten carbide. The spring 310 is φ12mm in diameter and 35mm in height, and is made of stainless steel (17-7PH). A one-way flow mechanism is formed through the one-way valve assembly, allowing forward flow. When the fluid pressure (injection pressure P1 from the injection connector 210 into the one-way pipe 114) > the spring 310, the flow is reversed. When there is 0 preload (spring 310 rebound force) + back pressure (pressure P2 inside the cavity), the valve core is pushed open by the fluid, and the fluid enters the primary mixer 110; reverse cut-off, when P2≥P1, the valve core abuts against the interface 211 of the injection connector 210 under the action of the spring 310 rebound force and fluid pressure, thus when the paint is injected alone, the paint cannot flow out from the injection connector 210 corresponding to the cleaning pipe 113, and when the cleaning fluid is injected alone, the paint cannot flow out from the injection connector 210 corresponding to the delivery pipe 112.

[0029] When the two coatings are transported to the output pipe 111 through two conveying pipes 112, they are mixed by mutual collision, thus completing the primary mixing in the primary mixer 110. The diameter of the conveying pipe 112 is φ12mm, and the diameter of the output pipe 111 is φ6mm. The design adopts a structure that is coarse at the front and fine at the back, so that the pressure of the coatings is increased before mixing, and stronger pressure is passed through the output pipe 111 after mixing.

[0030] The final mixer, in this design, is a static mixer. One end is connected to the output pipe 111 of the primary mixer 110 via an M18*1.5 thread, and the other end is connected to a high-pressure hose via a spray connector 440 to the spray gun. The static mixer is 280mm long and can be used in multiple stages by connecting the forward blade 420 and the reverse blade 430 in series according to the mixing state of the paint. The forward blade 420 and the reverse blade 430 are spiral mixing cores with a diameter of 20mm and a length of 20mm.

[0031] The cleaning pipe 113 and the conveying pipe 112 are drilled from the outside of the primary mixer 110 to the inside, so as to simplify the processing and reduce the cost. The excess parts of the holes (the parts that do not participate in the work) are sealed and blocked by the sealing plug 510.

[0032] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0033] Among them, insert and sliding insert are mating bodies with holes, the cross section of the shaft or rod matches the hole, and the shaft or rod can slide relative to the hole. Threaded insert is a hole with threads, the shaft or rod is threaded, and the shaft or rod is connected to the mating body by screwing. Detachable installation can be by bolt thread connection or bolt and nut connection, etc., depending on what can be actually achieved.

[0034] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A paint mixing and cleaning device, characterized in that: include A primary mixer is provided with an output pipe. The end of the output pipe is connected to multiple conveying pipes provided in the primary mixer. The end of the conveying pipe is connected to a cleaning pipe provided in the primary mixer. The primary mixer is provided with multiple one-way pipes. The one-way pipes are connected to the cleaning pipes or the conveying pipes. An injection connector is installed on the outside of the one-way pipe. The end of the injection connector is provided with an interface. A one-way valve assembly is disposed within a one-way pipe. The one-way valve assembly includes a spring and a valve core. The two ends of the spring are respectively connected to the inner wall of the one-way pipe and the valve core. The valve core is adapted to the interface.

2. The paint mixing and cleaning device as described in claim 1, characterized in that: It also includes a final mixer, which includes a final mixing tube, a spiral mixing core and an ejector connector. The final mixing tube is installed on the side wall of the primary mixer and is connected to the output pipe. The ejector connector is installed at the end of the final mixing tube, and the spiral mixing core is rotatably installed inside the final mixing tube.

3. The paint mixing and cleaning device as described in claim 2, characterized in that: The spiral mixing core includes multiple forward and reverse blades rotatably mounted inside the final mixing tube, with the forward and reverse blades arranged at intervals.

4. The paint mixing and cleaning device as described in claim 1, characterized in that: The end of the one-way pipe is connected to a transition pipe that is opened in the primary mixer. The diameter of the transition pipe is smaller than that of the one-way pipe, the cleaning pipe, and the conveying pipe. The transition pipe is connected to the conveying pipe or the cleaning pipe.

5. The paint mixing and cleaning device as described in claim 1, characterized in that: The diameter of the output pipe is smaller than the diameter of the delivery pipe.

6. The paint mixing and cleaning device as described in claim 3, characterized in that: The forward-facing blade core and the reverse-facing blade core are detachably connected.

7. The paint mixing and cleaning device as described in claim 1, characterized in that: The valve core is a ball core, and the cross-section of the interface is arc-shaped.

Images