High-precision reversing ball valve and intelligent color mixer

Abstract

The high-precision reversing ball valve comprises a valve body assembly and a valve element assembly, the valve body assembly comprises a feeding pipeline part, a valve element pipeline part and a pressure pump pipeline part, and the valve element assembly is rotationally arranged in the valve element pipeline part; a large-flow channel, a small-flow channel and a feeding channel are formed in the valve element assembly. The pressure pump pipeline piece is provided with a large material pressing opening and a small material pressing opening; the utility model further provides the intelligent color mixer. The large-flow channel and the small-flow channel are switched, large-flow rapid discharging and small-flow precise discharging can be conducted, the corresponding flow channel can be selected for discharging according to the actual production requirement, the production efficiency is improved, the application scene is widened, the discharging amount of small-flow precise discharging is accurate and high in precision, and the production efficiency is improved. The accuracy of the coating mixing proportion is ensured, the production quality of the mixed coating is improved, meanwhile, backflow pressure relief can be conducted on the coating in a large-pressure pump pipeline during small-flow precise discharging, and the discharging precision and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent color adjustment, and in particular to a high-precision reversing ball valve and an intelligent color adjustment machine. Background Art

[0002] Paint is applied to the surface of the object to be protected or decorated, and can form a continuous film that is firmly attached to the coated object. It is usually a viscous liquid made of resin, oil, or emulsion, with pigments, fillers and corresponding additives added, and prepared with organic solvents or water. It has good application scenarios in the fields of automobiles, construction, furniture, printing, textiles and pigments.

[0003] In the field of automobile repainting, it is often necessary to match the corresponding color of paint according to the color of the car paint, and colored paint often needs to be mixed with multiple different colors of paint in a certain proportion to obtain, and the accuracy of the mixing amount of each color paint is extremely high. Nowadays, most of the paint coloring work is done using a color mixing machine, which sets up multiple color mixing mechanisms to quantitatively output corresponding different colors of paint according to the mixing ratio, and then mixes these paints to obtain the required color of paint. The existing color mixing mechanism is provided with a discharge port, and the discharge port is opened or closed by an internal reversing valve. The quantitative discharge is only achieved by quantitative extrusion by a quantitative pump, and the discharge control accuracy is low. In particular, when performing small flow precise discharge, the color of the mixed paint often deviates due to inaccurate discharge volume, which seriously affects the quality of the paint. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present application provides a high-precision reversing ball valve and an intelligent color mixing machine.

[0005] A high-precision reversing ball valve disclosed in the present application comprises: a valve body assembly and a valve core assembly, the valve body assembly comprises a feed pipeline, a valve core pipeline and a pressure pump pipeline, the valve core assembly is rotatably arranged in the valve core pipeline, the feed port of the feed pipeline abuts against the sealing surface of the valve core assembly, and the discharge port of the valve core pipeline abuts against the conversion surface of the valve core assembly; a large flow channel, a small flow channel and a feed channel are provided in the valve core assembly, the large flow channel has a first port and a second port, the first port and the second port are respectively provided on the sealing surface and the conversion surface, the two ports of the feed channel are respectively provided on the sealing surface and the conversion surface, and the two ends of the small flow channel The ports are respectively opened on the conversion surface; the pressure pump pipeline component has a large pressure port and a small pressure port, the small pressure port abuts against the conversion surface, and the large pressure port is connected with the valve core pipeline component; in the feeding state, the two ports of the feed channel are respectively connected with the feed port of the feed pipeline component and the pressure pump pipeline component, and the first port, the second port and the two ports of the small flow channel are staggered with the discharge port; in the large flow discharge state, the first port and the second port are respectively connected with the large pressure port and the discharge port, and the first port and the port of the feed channel are staggered with the feed port of the feed pipeline component; in the small flow discharge state, the two ports of the small flow channel are respectively connected with the small pressure port and the discharge port.

[0006] Preferably, the large flow channel also includes a third port. In the small flow discharge state, the first port is connected to the feed port, the second port is staggered with the discharge port, and the third port is connected to the large pressure port.

[0007] Preferably, the pressure pump pipeline member includes a large pressure pump pipeline, a small pressure pump pipeline and a piston part, the small pressure pump pipeline is accommodated in the large pressure pump pipeline, the large pressure material port and the small pressure material port are respectively opened in the large pressure pump pipeline and the small pressure pump pipeline, and the piston part is movably arranged in the large pressure pump pipeline.

[0008] Preferably, the piston part includes a large material pressing piston and a small material pressing piston, the large material pressing piston is movably arranged in the large pressure pump pipeline; the small material pressing piston is movably arranged in the large pressure pump pipeline or the small pressure pump pipeline, in the large flow rate discharging state, the small material pressing piston moves in the large pressure pump pipeline, and in the small flow rate discharging state, the small material pressing piston moves in the small pressure pump pipeline.

[0009] Preferably, the large flow channel, the small flow channel and the feed channel are not connected to each other in the valve core assembly.

[0010] Preferably, the valve core assembly includes a ball valve component and a first sealing component, the sealing surface and the conversion surface are respectively formed on the surface of the ball valve component, and the large flow channel, the small flow channel and the feed channel are respectively opened in the ball valve component; the first sealing component is arranged at the small pressure port, the ball valve component is rotatably arranged in the valve core pipeline component and is located between the first sealing component and the discharge port, and the first sealing component is sealingly abutted against the conversion surface.

[0011] Preferably, the valve core assembly further comprises a turning handle, a side surface of the ball valve component away from the sealing surface is provided with a slide groove, one end of the turning handle is clamped in the slide groove, and the other end of the turning handle passes through the valve core pipeline component and extends to the outside.

[0012] Preferably, a second sealing member is provided at the feed inlet of the feed pipe member, and the second sealing member is in sealing contact with the sealing surface.

[0013] Preferably, the valve core assembly also includes a bottom cover component, which is arranged at the bottom of the valve core pipeline component. The bottom cover component has a discharge channel, which is connected to the discharge port and abuts against the conversion surface. Along the rotation direction of the conversion surface, an anti-wall hanging groove is opened at the bottom of the bottom cover component.

[0014] The present application also provides an intelligent color mixing machine, including a high-precision reversing ball valve.

[0015] The beneficial effect of the present application is that by switching between a large flow channel and a small flow channel, the present application can respectively perform large flow rapid discharging and small flow precise discharging, and can select the corresponding flow channel for discharging according to actual production needs, thereby improving production efficiency and broadening application scenarios. When performing large flow rapid discharging, a large pressure port is used in conjunction with a large flow channel for discharging, while when performing small flow precise discharging, a small pressure port is used in conjunction with a small flow channel for discharging. The small flow channel and the small pressure port have small channel diameters, which is conducive to precise control of the discharge amount of the coating, can achieve precise discharging, accurate discharge amount, ensure the accuracy of the coating mixing ratio, and improve the production quality of the mixed coating.

[0016] At the same time, when discharging with small flow rate and precision, the first port can be connected with the feed port to realize the reflux of paint, thereby relieving the pressure of the paint in the large pressure pump pipeline, ensuring that the metering pump can accurately drive the small pressure piston to discharge with small flow rate and precision, thereby improving the accuracy and stability of the discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a structural schematic diagram of a high-precision reversing ball valve in an embodiment;

[0019] Figure 2 It is a cross-sectional view of the high-precision reversing ball valve in the feeding state in the embodiment;

[0020] Figure 3 It is a cross-sectional view of a high-precision reversing ball valve in a large flow rate discharging state in an embodiment;

[0021] Figure 4It is a cross-sectional view of a high-precision reversing ball valve in a low-flow discharge state in an embodiment;

[0022] Figure 5 It is a structural schematic diagram of the ball valve member in the embodiment;

[0023] Figure 6 Another structural schematic diagram of the ball valve member in the embodiment;

[0024] Figure 7 is a cross-sectional view of a large flow channel in an embodiment;

[0025] Figure 8 is a cross-sectional view of a feed channel in an embodiment;

[0026] Fig. 9 is a cross-sectional view of a small flow channel in an embodiment;

[0027] Fig.10 is a perspective view of a ball valve member in an embodiment;

[0028] Fig.11 It is a schematic diagram of the structure of the large-pressure pump pipeline and the small-pressure pump pipeline in the embodiment;

[0029] Fig.12 It is a structural schematic diagram of the piston part in the embodiment;

[0030] Fig.13 It is a schematic diagram of the coordination of the ball valve component and the feed pipe component in the low flow rate discharge state in the embodiment;

[0031] Fig.14 This is a schematic diagram of the working principle of the piston part in the large flow rate discharging state in the embodiment;

[0032] Fig.15 This is a schematic diagram of the working principle of the piston part in the state of small flow rate discharge in the embodiment;

[0033] Fig.16 is a schematic structural diagram of a bottom cover member in an embodiment;

[0034] Fig.17 It is a schematic diagram of the structure of the barrel and the metering pump in the embodiment;

[0035] Fig.18 Schematic diagram of the structure of the intelligent color mixing machine in the embodiment.

[0036] Reference numerals:

[0037] 1. Valve body assembly; 11. Feed pipe assembly; 111. Feed inlet; 112. Second sealing member; 12. Valve core pipe assembly; 121. Discharge port; 13. Pressure pump pipe assembly; 131. Large pressure pump pipe; 1311. Large pressure port; 132. Small pressure pump pipe; 1321. Small pressure port; 133. Piston; 1331. Large pressure piston; 1332. Small pressure piston; 2. Valve core assembly; 21. Ball valve assembly; 211. Sealing surface; 212. Conversion surface; 213. Large flow Measuring channel; 2131, first port; 2132, second port; 2133, third port; 214, small flow channel; 2141, seventh port; 2151, eighth port; 215, feeding channel; 2151, fourth port; 2152, fifth port; 2153, sixth port; 216, slide groove; 22, first sealing member; 23, handle member; 24, bottom cover member; 241, discharge channel; 242, anti-wall hanging groove; 100, barrel; 101, metering pump. DETAILED DESCRIPTION

[0038] The following will disclose multiple embodiments of the present application with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present application. In other words, in some embodiments of the present application, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0039] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, in the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present application. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0041] In order to further understand the application content, features and effects of the present application, the following embodiments are cited and described in detail with reference to the accompanying drawings.

[0042] Reference Figure 1-4 , Figure 1 It is a structural schematic diagram of a high-precision reversing ball valve in an embodiment, Figure 2 It is a cross-sectional view of the high-precision reversing ball valve in the feeding state in the embodiment. Figure 3 This is a cross-sectional view of a high-precision reversing ball valve in a large flow discharge state in an embodiment. Figure 4 It is a cross-sectional view of the high-precision reversing ball valve in the small flow discharge state in the embodiment. The high-precision reversing ball valve in this embodiment includes a valve body assembly 1 and a valve core assembly 2. The valve body assembly 1 includes a feed pipeline member 11, a valve core pipeline member 12 and a pressure pump pipeline member 13. The valve core assembly 2 is rotatably arranged in the valve core pipeline member 12. The feed port 111 of the feed pipeline member 11 abuts against the sealing surface 211 of the valve core assembly 2, and the discharge port 121 of the valve core pipeline member 12 abuts against the conversion surface 212 of the valve core assembly 2. A large flow channel 213, a small flow channel 214 and a feed channel 215 are provided in the valve core component 2. The large flow channel 213 has a first port 2131 and a second port 2132. The first port 2131 and the second port 2132 are respectively provided on the sealing surface 211 and the conversion surface 212. The two ports of the feed channel 215 are respectively provided on the sealing surface 211 and the conversion surface 212. The two ports of the small flow channel 214 are respectively provided on the conversion surface 212. The pressure pump pipeline component 13 has a large pressure port 1311 and a small pressure port 1321. The small pressure port 1321 abuts against the conversion surface 212. The large pressure port 1311 is connected to the valve core pipeline component 12. In the feeding state, the two ports of the feed channel 215 are respectively connected to the feed port 111 of the feed pipeline component 11 and the pressure pump pipeline component 13. The first port 2131, the second port 2132 and the two ports of the small flow channel 214 are staggered from the discharge port 121. In the state of large flow rate discharge, the first port 2131 and the second port 2132 are respectively connected with the large pressing port 1311 and the discharge port 121, and the first port 2131 and the ports of the feed channel 215 are staggered with the feed port 111 of the feed pipe member 11. In the state of small flow rate discharge, the two ports of the small flow channel 214 are respectively connected with the small pressing port 1321 and the discharge port 121.

[0043] Refer to Fig.17 and Fig.18 , Fig.17 It is a schematic diagram of the structure of the barrel and the metering pump in the embodiment, Fig.181 is a schematic diagram of the structure of the intelligent color mixing machine in the embodiment. The high-precision reversing ball valve in the embodiment is used in combination with the barrel 100 and the metering pump 101. The specific description of the intelligent color mixing machine composed of the high-precision reversing ball valve, the barrel 100 and the metering pump 101 in the embodiment is also introduced in the embodiment. The embodiment is used to mix the paint after quantitatively discharging it to achieve color mixing, which can be specifically applied to the color mixing of paint such as car touch-up paint and wall painting. By switching the large flow channel 213 and the small flow channel 214, this embodiment can respectively perform large flow rapid discharging and small flow precise discharging. The corresponding flow channel can be selected for discharging according to actual production needs, thereby improving production efficiency and broadening the application scenarios. When performing large flow rapid discharging, the large pressure port 1311 cooperates with the large flow channel 213 to discharge, while when performing small flow precise discharging, the small pressure port 1321 cooperates with the small flow channel 214 to discharge. The small flow channel 214 and the small pressure port 1321 have small channel diameters, which is conducive to the precise control of the discharge amount of the coating, and can achieve precise discharging, accurate discharge amount, ensure the accuracy of the coating mixing ratio, and improve the production quality of the mixed coating. Specifically, the intelligent color mixing machine includes a high-precision reversing ball valve, a barrel 100 and a metering pump 101. The barrel 100 is connected to the feed pipeline 11, and the metering pump 101 is arranged in the pressure pump pipeline 13. The metering pump 101 in this embodiment is a prior art, which can push quantitatively according to the parameters set by the user. At the same time, it has an intelligent controller, which can be pre-programmed to control the metering pump 101 to perform suction action at a fixed time, which will not be repeated here.

[0044] Refer to Figure 5-10 , Figure 5 is a schematic diagram of the structure of the ball valve member in the embodiment, Figure 6 is another structural schematic diagram of the ball valve member in the embodiment, Figure 7 is a cross-sectional view of a large flow channel in an embodiment, Figure 8 is a cross-sectional view of the feed channel in the embodiment, Fig. 9 is a cross-sectional view of a small flow channel in an embodiment, Fig.102 is a perspective view of the ball valve member in the embodiment. Preferably, the valve core assembly 2 includes a ball valve member 21 and a first sealing member 22. The sealing surface 211 and the conversion surface 212 are respectively formed on the surface of the ball valve member 21. The large flow channel 213, the small flow channel 214 and the feed channel 215 are respectively opened in the ball valve member 21. The first sealing member 22 is arranged at the small pressure port 1321. The ball valve member 21 is rotatably arranged in the valve core pipeline member 12 and is located between the first sealing member 22 and the discharge port 121. The first sealing member 22 is sealed against the conversion surface 212. In specific application, the ball valve member 21 in this embodiment is a spherical valve, and its sealing surface 211 is a plane, while the conversion surface 212 is a spherical curved surface. The first port 2131 and one of the ports of the feed channel 215 are respectively opened on the sealing surface 211, that is, as the ball valve member 21 rotates, the feed port 111 is respectively connected and disconnected with the first port 2131 and one of the ports of the feed channel 215. The second port 2132, another port of the feed channel 215, and two ports of the small flow channel 214 are respectively opened on the conversion surface 212, and the four ports are arranged around the conversion surface 212 at intervals. It can be understood that when in use, the connection and staggered state of the channel can be changed by rotating the ball valve member 21, so as to realize the switching of the three states of feeding, large flow discharge and small flow discharge. At the same time, through the setting of the first sealing member 22, the small pressing port 1321 can be sealed to ensure that the conversion surface 212 and the small pressing port 1321 are sealed and abutted, and to ensure that all the paint pressed out of the small pressing port 1321 can only be transferred through the port on the conversion surface 212, and the paint is prevented from overflowing from other positions into the valve core pipeline member 12, thereby improving the accuracy of the discharge. Sealed abutment means that the conversion surface 212 and the first sealing member 22 are kept in a close contact state, and the paint cannot overflow from the contact, and the conversion surface 212 can also slide relative to the first sealing member 22. Specifically, the first sealing component 22 is a sealing rubber ring, the small pressing port 1321 is penetrated through the center hole of the sealing rubber ring and maintains a sealed state, the conversion surface 212 of the ball valve component 21 is sealed against the sealing rubber ring, and as the ball valve component 21 rotates, the multiple ports on the conversion surface 212 are sequentially connected to the center hole of the sealing rubber ring.

[0045] Re-reference Fig.10 Preferably, the large flow channel 213, the small flow channel 214 and the feed channel 215 are not connected to each other in the valve core assembly 2. It can be understood that the large flow channel 213, the small flow channel 214 and the feed channel 215 in this embodiment are all opened in the ball valve member 21, and the three channels are independent of each other, ensuring that the three channels will not affect each other when the ball valve member 21 is working, which is convenient for controlling the coating discharge amount, ensuring the controllability of the coating discharge amount, and improving the discharge accuracy.

[0046] Refer to Fig.11 and Fig.12 , Fig.11It is a schematic diagram of the structure of the large pressure pump pipeline and the small pressure pump pipeline in the embodiment, Fig.12 It is a structural schematic diagram of the piston part in the embodiment. Preferably, the pressure pump pipeline member 13 includes a large pressure pump pipeline 131, a small pressure pump pipeline 132 and a piston part 133. The small pressure pump pipeline 132 is accommodated in the large pressure pump pipeline 131. The large pressure port 1311 and the small pressure port 1321 are respectively opened in the large pressure pump pipeline 131 and the small pressure pump pipeline 132. The piston part 133 is movably arranged in the large pressure pump pipeline 131. In specific applications, the feed pipeline component 11, the valve core pipeline component 12 and the pressure pump pipeline component 13 in this embodiment are an integrally formed structure, that is, the valve core pipeline component 12 is respectively connected with the feed port 111 of the feed pipeline component 11 and the pressure pump pipeline component 13, and the ball valve component 21 is rotatably arranged in the valve core pipeline component 12, and the sealing surface 211 of the ball valve component 21 is in contact with the feed port 111 of the feed pipeline component 11, that is, the paint in the feed pipeline component 11 can only enter the valve core pipeline component 12 and the pressure pump pipeline component 13 through the ball valve component 21. It can be understood that when the feed port 111 is staggered with the first port 2131 located on the sealing surface 211 and the port of the feed channel 215, the feed port 111 is closed by the sealing surface 211, that is, the paint in the feed pipeline component 11 cannot enter the ball valve component 21. The pressure pump pipeline component 13 has two pipelines, namely a large pressure pump pipeline 131 and a small pressure pump pipeline 132, wherein the large pressure port 1311 of the large pressure pump pipeline 131 is always connected with the valve core pipeline component 12, that is, there is a spacing space between the sealing surface 211 of the ball valve component 21 and the inner wall of the valve core pipeline component 12, but the conversion surface 212 of the ball valve component 21 is in a sealed abutment state with the inner wall of the valve core pipeline component 12. The small pressing port 1321 of the small-pressure pump pipeline 132 is sealed and abutted against the conversion surface 212 of the ball valve component 21. That is to say, when performing small-flow precise discharging, the discharged paint all comes from the small-pressure pump pipeline 132, and the metering pump 101 drives the piston part 133 to press the paint in the small-pressure pump pipeline 132 into the small-flow channel 214. The small-pressure pump pipeline 132 has a small diameter, and is discharged in conjunction with the small-flow channel 214. In this way, when the accuracy of the downward stroke of the metering pump 101 cannot be improved, the accuracy of the paint discharging can also be greatly improved, thereby improving the accuracy of the paint color adjustment.

[0047] Refer to Figure 13-15 , Fig.13 This is a schematic diagram of the coordination of the ball valve and the feed pipe under the low flow rate discharge state in the embodiment. Fig.14 This is a schematic diagram of the working principle of the piston part in the large flow rate discharge state in the embodiment. Fig.15Schematic diagram of the working principle of the piston part in the state of small flow rate discharging in the embodiment. Preferably, the piston part 133 includes a large material pressing piston 1331 and a small material pressing piston 1332. The large material pressing piston 1331 is movably arranged in the large pressure pump pipeline 131. The small material pressing piston 1332 is movably arranged in the large pressure pump pipeline 131 or the small pressure pump pipeline 132. In the state of large flow rate discharging, the small material pressing piston 1332 moves in the large pressure pump pipeline 131, and in the state of small flow rate discharging, the small material pressing piston 1332 moves in the small pressure pump pipeline 132. In specific application, the small-large pressure pump pipeline 131 is longer than the small pressure pump pipeline 132. The pressure pump pipeline 132 is located inside the large pressure pump pipeline 131 and close to the bottom of the large pressure pump pipeline 131. The small pressure pump pipeline 132 is coaxially arranged with the large pressure pump pipeline 131, that is, the small pressure port 1321 of the small pressure pump pipeline 132 abuts against the conversion surface 212, the other port of the small pressure pump pipeline 132 is connected to the inside of the large pressure pump pipeline 131, and the port at the bottom of the large pressure pump pipeline 131 is connected to the valve core pipeline member 12. The large pressure piston 1331 and the small pressure piston 1332 are both arranged on the same piston rod, and the small pressure piston 1332 is located closer to the small pressure pump pipeline 132. The piston rod is connected to the metering pump 101, and the piston rod can move up and down in the axial direction of the small pressure pump pipeline 132 and the large pressure pump pipeline 131. The large material pressing piston 1331 is sealed against the inner wall of the large pressure pump pipeline 131, and the outer diameter of the small material pressing piston 1332 is equal to the inner diameter of the small pressure pump pipeline 132. Specifically, when discharging at a large flow rate, the large material pressing piston 1331 moves in the large pressure pump pipeline 131, and the small material pressing piston 1332 also moves in the large pressure pump pipeline 131, that is, at this time, the small material pressing piston 1332 does not enter the small pressure pump pipeline 132, and the large material pressing piston 1331 presses down to make the paint flow into the valve core pipeline part 12 through the large pressure pump pipeline 131, and then realizes large flow rate and fast material discharging through the large flow channel 213. When discharging at a small flow rate, the small material pressing piston 1332 has extended into the small pressure pump pipeline 132. At this time, the small material pressing piston 1332 presses down to make the paint enter the small flow channel 214 of the ball valve part 21 through the small pressure pump pipeline 132, and then realizes small flow rate and precise material discharging through the small flow channel 214.

[0048] Re-reference Figure 13-15Preferably, the large flow channel 213 also includes a third port 2133. In the state of small flow discharge, the first port 2131 is connected to the feed port 111, the second port 2132 is staggered with the discharge port 121, and the third port 2133 is connected to the large pressing port 1311. In specific application, the third port 2133 is opened at the end of the ball valve member 21 away from the sealing surface 211. It can be understood that the ball valve member 21 in this embodiment has an arc-shaped conversion surface 212 and two planes, one of which is the sealing surface 211, and the third port 2133 is opened on the other plane. Since the conversion surface 212 is sealed against the inner wall of the valve core pipeline member 12, and there is space between the two planes and the inner wall of the valve core pipeline member 12, the third port 2133 is always connected to the large pressing pipeline 131, that is, the large flow channel 213 is approximately a "T"-shaped channel. Specifically, the feed channel 215 is similar in shape to the large flow channel 213, and is also approximately a "T"-shaped channel. The feed channel 215 has three ports: a fourth port 2151, a fifth port 2152, and a sixth port 2153, wherein the fourth port 2151 is opened on the sealing surface 211, the fifth port 2152 is opened on the conversion surface 212, and the sixth port 2153 is opened on another plane of the ball valve member 21, that is, it is located on the same plane as the third port. The small flow channel 214 has two ports: a seventh port 2141 and an eighth port 2142, the seventh port 2141 and the eighth port 2142 are respectively opened on the conversion surface 212, and the small flow channel 214 passes through the ball center of the ball valve member 21. It should be particularly noted that when performing small flow rate and precise discharging, since the small pressure piston 1332 is located in the small pressure pump pipeline 132 at this time, the two ports of the small flow channel 214 are respectively connected to the small pressure port 1321 and the discharge port 121 of the small pressure pump pipeline 132. As the metering pump 101 drives the small pressure piston 1332 to descend, the small pressure piston 1332 presses the paint in the small pressure pump pipeline 132 into the small flow channel 214, and then performs small flow rate and precise discharging through the discharge port 121. Since the small material pressing piston 1332 and the large material pressing piston 1331 are arranged on the same piston rod, when the small material pressing piston 1332 descends, the large material pressing piston 1331 also descends synchronously. When the large material pressing piston 1331 descends, it will also form pressure on the paint in the large pressure pump pipeline 131. At this time, the paint in the large pressure pump pipeline 131 flows through the large material pressing port 1311, the valve core pipeline component 12, the third port 2133, the large flow channel 213, the first port 2131, the feed port 111, and the feed pipeline component 11 in sequence and then flows back into the barrel 100, thereby completing the pressure relief of the paint inside the large pressure pump pipeline 131, improving the overall stability of the ball valve operation, and making the paint only be pressed out from the small pressure pump pipeline 132 through the small flow channel 214 when the small flow rate is accurately discharged, thereby improving the discharge accuracy.

[0049] Re-reference Figure 13-15Preferably, a second sealing member 112 is provided at the feed port 111 of the feed pipe member 11, and the second sealing member 112 is in sealing contact with the sealing surface 211. Since this embodiment has high requirements on the accuracy of the coating discharge amount during use, the provision of the second sealing member 112 can make the feed port 111 in sealing contact with the sealing surface 211, ensuring that the coating will not overflow during sealing, thereby ensuring the accuracy of the discharge. Specifically, the second sealing member 112 is a hemispherical sealing plug, the arc portion of which is in sealing contact with the feed port 111, and the plane portion of which is in sealing contact with the sealing surface 211, wherein a central through hole is provided at the axis thereof to communicate with the feed port 111, and is respectively matched with the first port 2131 on the sealing surface 211 and the port of the discharge channel 215.

[0050] Refer to Fig.16 , Fig.16 Schematic diagram of the structure of the bottom cover in the embodiment. Preferably, the valve core assembly 2 also includes a bottom cover 24, which is arranged at the bottom of the valve core pipeline 12. The bottom cover 24 has a discharge channel 241, which is connected to the discharge port 121, and the discharge channel 241 abuts against the conversion surface 212. Along the rotation direction of the conversion surface 212, an anti-wall hanging groove 242 is provided at the bottom of the bottom cover 24. Since the ball valve 21 needs to be rotated during use to switch between different discharge states, and when the ball valve 21 rotates, its conversion surface 212 and the bottom cover 24 slide relative to each other, and the paint at the port is easily hung on the bottom cover 24, thereby generating errors that affect the accuracy of the discharge. By setting the anti-wall-hanging groove 242, the conversion surface 212 of the ball valve member 21 can protrude relative to the anti-wall-hanging groove 242, and at the same time, the groove wall of the anti-wall-hanging groove 242 is arc-shaped, which reduces the adhesion between the paint and the groove wall of the anti-wall-hanging groove 242, and prevents the paint from being hung on the bottom cover member 24, thereby further improving the accuracy of the discharge. It should be particularly noted that the diameter of the discharge channel 241 is large, so that a large part of the conversion surface 212 of the ball valve member 21 is exposed outside the valve core pipeline member 12, so that when the second port 2132 or the eighth port 2142 is discharging, the distance between the port and the bottom cover member 24 is far, so the paint is more easily gathered at the port under the action of gravity and will not be hung on the bottom cover member 24, thereby reducing the error caused by hanging on the wall and further improving the accuracy of the discharge.

[0051] Preferably, the valve core assembly 2 further comprises a handle 23, a side of the ball valve member 21 away from the sealing surface 211 is provided with a slide groove 216, one end of the handle 23 is clamped in the slide groove 216, and the other end of the handle 23 passes through the valve core pipeline member 12 and extends to the outside. The handle 23 is a rotating shaft, and a rotating handle is provided at the other end thereof, which is convenient for connection with the intelligent control mechanism or manual rotation. The intelligent control mechanism can realize the rotation of the ball valve member 21 by rotating the rotating handle. The intelligent control mechanism is a prior art and can be electrically connected to the metering pump 101, thereby realizing full-automatic switching and pressing, which will not be described in detail here. In specific applications, multiple threaded holes are provided on the bottom cover 24 and the bottom of the valve core pipeline member 12, and the bottom cover 24 is detachably connected to the bottom of the valve core pipeline member 12 by means of screws and threaded holes. In this way, when the valve core pipeline member 12 needs to be cleaned or the internal ball valve member 21, the first sealing member 22 and other components need to be maintained, the bottom cover 24 can be disassembled. Since a sliding groove 216 is provided on a side plane of the ball valve member 21, one end of the turning handle 23 and the sliding groove 216 are in a state of relative sliding. The turning handle 23 is turned so that the opening of the sliding groove 216 faces the bottom cover 24. At this time, the bottom cover 24 can be disassembled to take out the ball valve member 21 for maintenance. Furthermore, by adjusting the degree of threading between the bottom cover 24 and the valve core pipeline 12, the close contact between the ball valve component 21 and the first sealing component 22 and the close contact between the ball valve component 21 and the bottom cover 24 can be adjusted. Since most coatings are viscous liquids, excessive close contact between the ball valve component 21 and the first sealing component 22 or the bottom cover 24 will make it difficult for the ball valve component 21 to rotate, while excessive looseness will lead to a decrease in the sealing effect, thereby affecting the accuracy of the discharge. By adjusting the degree of threading between the bottom cover 24 and the valve core pipeline 12, the ball valve component 21 can be easily rotated while ensuring its sealing.

[0052] The intelligent color mixing machine in this embodiment has three working states: feeding state, large flow discharge state and small flow discharge state. In the feeding state: by turning the handle 23, the ball valve 21 is rotated so that the fourth port 2151 is connected with the feed port 111, the fifth port 2152 is connected with the small pressure port 1321, and the second port 2132, the seventh port 2141 and the eighth port 2142 are all staggered with the discharge port 121, and the metering pump 101 starts to perform the upward pumping work, the metering pump 101 drives the large pressure piston 1331 to rise, and the paint is drawn out from the barrel 100, and the paint flows through the feed pipe 11, the feed port 111, the fourth port 2151, the feed channel 215, the fifth port 2152, the small pressure port 1321, the small pressure pump pipe 132, the large pressure pump pipe 131 in sequence, and is finally stored in the large pressure pump pipe 131 and the small pressure pump pipe 132. It should be particularly noted that the metering pump 101 will drive the large material pressing piston 1331 to rise an additional stroke when pumping materials. In this way, after the pumping action is completed, the metering pump 101 will drive the large material pressing piston 1331 to descend a short stroke. A portion of the paint flows back to the barrel 100 along the opposite direction of the feeding route, and another portion of the paint flows through the large pressure pump pipeline 131, the large material pressing port 1311, the valve core pipeline component 12, the first port 2131 or the third port 2133 in sequence, and finally enters the large flow channel 213. At this time, the valve core pipeline component 12 and the large flow channel 213 are both full of paint. In this way, when the working state is subsequently switched, inaccurate discharge volume due to the presence of air in the valve core pipeline component 12 and the large flow channel 213 is avoided, thereby improving the discharge accuracy.

[0053] When the amount of paint in the high-pressure pump pipeline 131 reaches a certain amount, it can be switched to a high-flow discharge state: the ball valve component 21 is rotated by turning the handle 23, so that the first port 2131 and the fourth port 2151 are staggered with the feed port 111, the fifth port 2152, the seventh port 2141 and the eighth port 2142 are staggered with the discharge port 121, the second port 2132 is connected with the discharge port 121, and the metering pump 101 drives the large material pressing piston 1331 to descend for pressing the material. The paint flows through the high-pressure pump pipeline 131, the large material pressing port 1311, the valve core pipeline component 12, the first port 2131 or the third port 2133, the high-flow channel 213, the second port 2132 in sequence, and then passes through the discharge port 121 for high-flow rapid discharge. It should be particularly noted that when discharging at a large flow rate, the metering pump 101 drives the large material pressing piston 1331 to descend during the material pressing process, and the small material pressing piston 1332 also descends synchronously, but it is necessary to ensure that the small material pressing piston 1332 is located above the small pressure pump pipeline 132 and does not enter the small pressure pump pipeline 132. In other words, when discharging at a large flow rate, once the small material pressing piston 1332 descends and is ready to enter the small pressure pump pipeline 132, the discharging should be stopped, the ball valve component 21 should be turned to the feeding state, and the large flow rate discharging can be continued after the material is pumped again.

[0054] Small flow rate discharging state: At this time, the small pressure piston 1332 should be in the small pressure pump pipeline 132, that is, the metering pump 101 can directly drive the small pressure piston 1332 into the small pressure pump pipeline 132 in the feeding state, or it can be switched to the small flow rate discharging state when the small pressure piston 1332 is ready to enter the small pressure pump pipeline 132 in the large flow rate discharging state. By turning the ball valve component 21 through the turning handle 23, the first port 2131 is connected to the feed port 111, the second port 2132 and the fifth port 2152 are staggered with the discharge port 121, the seventh port 2141 and the eighth port 2142 are connected to the small pressure port 1321 and the discharge port 121 respectively, and the metering pump 101 drives the small pressure piston 1332 to descend to press the material, and the paint passes through the small pressure pump pipeline 132, the small pressure port 1321, the seventh port 2141, the small flow channel 214, the eighth port 2142 in sequence, and then passes through the discharge port 121 for small flow and precise discharge. It should be particularly noted that when the metering pump 101 drives the small material pressing piston 1332 to descend to press the material, the large material pressing piston 1331 also descends synchronously, so that the large material pressing piston 1331 also exerts pressure on the paint in the large pressure pump pipeline 131. At this time, the paint in the large pressure pump pipeline 131 can flow through the large material pressing port 1311, the valve core pipeline component 12, the third port 2133, the large flow channel 213, the first port 2131, and the feed port 111 in sequence, and then flow back to the barrel 100 through the feed pipeline component 11, thereby completing the pressure relief of the paint in the large pressure pump pipeline 131, ensuring that the metering pump 101 can accurately drive the small material pressing piston 1332 to accurately discharge the material at a small flow rate, thereby improving the accuracy and stability of the discharge.

[0055] The intelligent color mixing machine in this embodiment will perform the process of paint reflux moisturizing flow channel at intervals when it is not in the discharging working state, that is, in the standby state, and the interval time is set on the intelligent controller of the intelligent color mixing machine. The process of paint reflux moisturizing flow channel is as follows: in the non-discharging working state, rotate the ball valve member 21 to switch it to the feeding state. After the preset time is reached, the metering pump 101 starts to pump material, and the paint is pumped out from the paint container 100. The paint flows through the feed pipe 11, the feed port 111, the fourth port 2151, the feed channel 215, the fifth port 2152, the small pressure port 1321, the small pressure pump pipe 132, and the large pressure pump pipe 131 in sequence, and is finally stored in the large pressure pump pipe 131 and the small pressure pump pipe 132. Then the metering pump 101 presses the material so that a part of the paint flows back into the barrel 100 in the opposite direction of the feed path, and the other part of the paint flows through the large pressure pump pipe 131, the large pressure port 1311, the valve core pipe 12, the first port 2131 or the third port 2133 in sequence, and finally enters the large flow channel 213. At this time, the valve core pipe 12 and the large flow channel 21 3 are all filled with paint, that is, the valve core pipeline 12 and the large flow channel 213 are exhausted, and this is repeated several times to realize the paint reflux moisturizing flow channel, so that the paint in the flow channel can be circulated, and the paint remaining inside the intelligent color mixing machine is prevented from solidifying and causing blockage inside the flow channel when the intelligent color mixing machine is not discharging. That is, the paint reflux moisturizing flow channel structure is formed by the quantitative pump 101 and the high-precision reversing ball valve, which effectively reduces the frequency of daily maintenance and extends the service life of the product. At the same time, after the paint reflux moisturizing flow channel process, the paint in the valve core pipeline 12 and the large flow channel 213 can be kept full. After this process, the air in the valve core pipeline 12 and the large flow channel 213 can also be effectively discharged to ensure the accuracy of the intelligent color mixing machine when it performs discharging work next time.

[0056] In summary, by switching between the large flow channel and the small flow channel, this embodiment can respectively perform large flow rapid discharging and small flow precise discharging, and can select the corresponding flow channel for discharging according to actual production needs, thereby improving production efficiency and broadening the application scenarios. When performing large flow rapid discharging, the large pressure port cooperates with the large flow channel for discharging, while when performing small flow precise discharging, the small pressure port cooperates with the small flow channel for discharging. The small flow channel and the small pressure port have small channel diameters, which is conducive to the precise control of the discharge amount of the coating, and can achieve precise discharging, accurate discharge amount, ensure the accuracy of the coating mixing ratio, and improve the production quality of the mixed coating. At the same time, when performing small flow precise discharging, the first port can be connected to the feed port to realize the reflux of the coating, thereby relieving the pressure on the coating in the large pressure pump pipeline, ensuring that the metering pump can accurately drive the small pressure piston to perform small flow precise discharging, and improving the accuracy and stability of the discharging.

[0057] The above is only the implementation mode of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A high-precision reversing ball valve, characterized in that: include: A valve body assembly (1) and a valve core assembly (2), wherein the valve body assembly (1) comprises a feed pipeline member (11), a valve core pipeline member (12) and a pressure pump pipeline member (13), wherein the valve core assembly (2) is rotatably arranged in the valve core pipeline member (12), wherein the feed port (111) of the feed pipeline member (11) abuts against the sealing surface (211) of the valve core assembly (2), and the discharge port (121) of the valve core pipeline member (12) abuts against the conversion surface (212) of the valve core assembly (2); wherein a large flow channel (213), a small flow channel (214) and a feed channel (215) are provided in the valve core assembly (2), wherein the large flow channel (213) has a first port ( The first port (2131) and the second port (2132) are respectively opened on the sealing surface (211) and the conversion surface (212); the two ports of the feed channel (215) are respectively opened on the sealing surface (211) and the conversion surface (212); the two ports of the small flow channel (214) are respectively opened on the conversion surface (212); the pressure pump pipeline component (13) has a large pressure port (1311) and a small pressure port (1321); the small pressure port (1321) is in contact with the conversion surface (212); and the large pressure port (1311) is in communication with the valve core pipeline component (12); In the feeding state, the two ports of the feeding channel (215) are respectively connected to the feeding port (111) of the feeding pipeline member (11) and the pressure pump pipeline member (13), and the first port (2131), the second port (2132) and the two ports of the small flow channel (214) are all staggered with the discharge port (121); in the large flow discharge state, the first port (2131) and the second port (2132) are respectively connected to the large pressure port (1311) and the discharge port (121), and the first port (2131) and the ports of the feeding channel (215) are all staggered with the feeding port (111) of the feeding pipeline member (11); in the small flow discharge state, the two ports of the small flow channel (214) are respectively connected to the small pressure port (1321) and the discharge port (121).

2. The high-precision reversing ball valve according to claim 1, characterized in that: The large flow channel (213) also includes a third port (2133). In a small flow discharge state, the first port (2131) is connected to the feed port (111), the second port (2132) is staggered with the discharge port (121), and the third port (2133) is connected to the large pressure port (1311).

3. The high-precision reversing ball valve according to claim 1, characterized in that: The pressure pump pipeline member (13) comprises a large pressure pump pipeline (131), a small pressure pump pipeline (132) and a piston part (133); the small pressure pump pipeline (132) is accommodated in the large pressure pump pipeline (131); the large pressure material opening (1311) and the small pressure material opening (1321) are respectively opened in the large pressure pump pipeline (131) and the small pressure pump pipeline (132); and the piston part (133) is movably arranged in the large pressure pump pipeline (131).

4. The high-precision reversing ball valve according to claim 3, characterized in that: The piston part (133) comprises a large material pressing piston (1331) and a small material pressing piston (1332); the large material pressing piston (1331) is movably arranged in the large pressure pump pipeline (131); the small material pressing piston (1332) is movably arranged in the large pressure pump pipeline (131) or the small pressure pump pipeline (132); in a large flow rate discharge state, the small material pressing piston (1332) moves in the large pressure pump pipeline (131); in a small flow rate discharge state, the small material pressing piston (1332) moves in the small pressure pump pipeline (132).

5. The high-precision reversing ball valve according to claim 1, characterized in that: The large flow channel (213), the small flow channel (214) and the feed channel (215) are not connected to each other in the valve core assembly (2).

6. The high-precision reversing ball valve according to claim 1, characterized in that: The valve core assembly (2) comprises a ball valve component (21) and a first sealing component (22); the sealing surface (211) and the conversion surface (212) are respectively formed on the surface of the ball valve component (21); the large flow channel (213), the small flow channel (214) and the feed channel (215) are respectively opened in the ball valve component (21); the first sealing component (22) is arranged at the small pressure port (1321); the ball valve component (21) is rotatably arranged on the valve core pipeline component (12) and is located between the first sealing component (22) and the discharge port (121); the first sealing component (22) is in sealing contact with the conversion surface (212).

7. The high-precision reversing ball valve according to claim 6, characterized in that: The valve core assembly (2) further comprises a turning handle (23), a side of the ball valve component (21) away from the sealing surface (211) is provided with a slide groove (216), one end of the turning handle (23) is clamped in the slide groove (216), and the other end of the turning handle (23) passes through the valve core pipeline component (12) and extends to the outside.

8. The high-precision reversing ball valve according to claim 1, characterized in that: A second sealing member (112) is provided at the feed inlet (111) of the feed pipe member (11), and the second sealing member (112) is in sealing contact with the sealing surface (211).

9. The high-precision reversing ball valve according to claim 6, characterized in that: The valve core assembly (2) further comprises a bottom cover member (24), wherein the bottom cover member (24) is arranged at the bottom of the valve core pipeline member (12), and the bottom cover member (24) has a discharge channel (241), wherein the discharge channel (241) is communicated with the discharge port (121), and the discharge channel (241) abuts against the conversion surface (212); along the rotation direction of the conversion surface (212), an anti-wall hanging groove (242) is provided at the bottom of the bottom cover member (24).

10. An intelligent color mixing machine, characterized in that: It comprises a high-precision reversing ball valve as described in any one of claims 1 to 9.

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