WO2014113934A1

WO2014113934A1 - Distributing valve assembly and color paste distributing device used for color mixer

Info

Publication number: WO2014113934A1
Application number: PCT/CN2013/070880
Authority: WO
Inventors: 黄松; 牛伟红; 庞君
Original assignee: 沈如华
Priority date: 2013-01-23
Filing date: 2013-01-23
Publication date: 2014-07-31
Also published as: CN105026307B; CN105026307A

Abstract

A distributing valve assembly, a color paste distributing device having a distributing valve assembly, and a method for distributing color paste. The distributing valve assembly comprises: a first valve (1) and a second valve (2) capable of moving between a distributing position and a backflow position relative to the first valve. The first valve has at least one backflow inlet (11) and at least one backflow outlet (12). The second valve has at least one paste inlet (21), and at least one distributing outlet (22) located at a far end of the second valve. The at least one distributing outlet is aligned with the at least one backflow inlet at the backflow position, so that the paste flows back to a paste source through the at least one distributing outlet and the backflow outlet. In the distributing valve assembly, the distributing outlet forms a part of a paste backflow passage, which prevents deposition and drying of the paste at the distributing outlet and at any part of the paste distributing passage.

Description

Dispensing valve assembly and colorant dispensing device for color machine

The invention relates to the field of paint grading, in particular to the field of fully automatic paint grading. In particular, the present invention relates to a dispensing wide assembly, and a colorant dispensing device employing such a dispensing wide assembly. Furthermore, the invention relates to a method of dispensing a colorant using such a paste dispensing device. Background technique

In the field of paint tinting, a color machine is a color matching device for formulating a paint of a desired color such as a latex paint. Currently, commercially available automatic color grading machines include a one-injection automatic color grading machine and a simultaneous injection automatic color grading machine. The one-by-one automatic color toning machine mainly comprises a set of color paste barrels (usually 16 pieces) filled with different color pastes, each of which is connected to a color slurry pump through a three-way commutation, three-way exchange There is a paint nozzle at the front end of the width to realize the quantitative distribution of the color paste. Each color grading machine generally consists of a plurality of (usually 16) identical color paste bucket units having the above functions.

For the simultaneous injection of the automatic color grading machine, the discharge nozzles of each color paste bucket are concentrated within a specified range, and these concentrated discharge nozzles need to be sealed and dry when not in use. A common anti-drying method is to place a cover under the concentrated slurry pipe to seal all the tapping nozzles to prevent the color paste from drying out at the nozzle. Other anti-drying methods include, for example, a closed space formed between the cover and the mouth of the tapping nozzle, plus a sink or providing atomized water vapor into the space for moisturizing and drying. However, none of the above methods can completely solve the problem of dry coloration of the slurry at the mouth of the slurry. Because some color pastes are very volatile, and some color pastes are not often used, so that the excellent paste is dyed multiple times, and when the anti-dry cover under the concentrated discharge tube is opened, those that are not commonly used are The color paste at the color paste nozzle is volatilized and dried, causing blockage of the color paste at the outlet of the slurry. In addition, these infrequently used colorants will also cause some precipitation in the pipeline due to long periods of non-use, which will affect the normal injection of the color paste.

U.S. Patent Application No. US 2011/0132923 A1 discloses a dispensing and return valve assembly in which a return flow switching valve is provided at a position near the discharge port of the slurry discharge pipe. When the color paste is not required to be injected, the discharge pipe passes through the switching valve and the return pipe. Connect and prevent the slurry pipe from being injected into the slurry to return the color paste to the color tank. However, this kind of recirculation cannot realize the slurry return of the slurry pipe between the mouth end of the slurry pipe and the switching valve, which makes it impossible to realize the slurry pipe and the pipe mouth between the switching valve and the discharge pipe port. The backflow is dry. Therefore, such a dispensing and return valve assembly still suffers from a dry slurry of the slurry at the discharge port and a slurry deposition of the slurry section adjacent the nozzle and thus causes clogging.

Therefore, there is a need for a colorant dispensing apparatus capable of solving the problem of the color paste drying at the concentrated discharge port of the color mixing machine, especially the simultaneous injection coloring machine, and the color paste deposition problem in the color paste tube. Summary of the invention

In one aspect of the invention, a dispensing wide assembly is provided, comprising: a first wide member having at least one return inlet, at least one return outlet, and a first fluid extending between the return inlet and the return outlet a second valve member movable relative to the first valve member between the dispensing position and the return position, the second valve member having at least one slurry inlet, at least one dispensing outlet at a distal end of the second valve member, and a second fluid passage extending between the slurry inlet and the at least one dispensing outlet. Wherein the first valve member and the second valve member are configured to correspond to the number of at least one return inlet and the at least one dispensing outlet, at which the slurry can pass from the slurry inlet, the second fluid passage from the At least one dispensing outlet is dispensed, in which the at least one dispensing outlet is aligned with the at least one return inlet such that slurry is returned from the return outlet to the slurry source via the at least one dispensing outlet.

Specifically, in the above-described dispensing position of the dispensing valve assembly of the present invention, the slurry inlet, the second fluid passage, and the at least one dispensing outlet constitute a slurry distribution passage; in the return position, the slurry inlet, the second fluid passage, the at least one dispensing outlet, At least one return inlet, a first fluid passage, and at least one return outlet constitute a slurry return passage. In the above dispensing valve assembly, when dispensing slurry is required, the dispensing outlet is used to dispense the slurry, and when the slurry is required to return, the dispensing outlet forms part of the slurry return passage, thereby completely preventing any slurry at the dispensing outlet and any of the slurry distribution channels. Deposition and dry knots appear in one place.

According to another preferred embodiment of the present invention, the at least one return inlet is one or two return inlets and is located at a distal end of the first valve member, the at least one return outlet is a return outlet and is located at the first valve member a proximal end; the at least one slurry inlet is a slurry inlet and is located at a proximal end of the second valve member, the at least one dispensing outlet is one or two dispensing outlets; the second valve member is opposite the second The piece moves horizontally between the dispensing position and the reflow position. By setting two distribution outlets, the amount of slurry dispensed per unit time can be adjusted. When the amount of slurry to be dispensed per unit time is large, the second valve member can be moved relative to the first valve member to expose the two distribution outlets to distribute the slurry; When the amount of slurry to be dispensed per unit time is small, the second valve member can be moved relative to the first valve member to expose one minute. Equipped with an outlet to distribute the slurry.

In the above aspect, the first wide member and the second wide member are preferably made of ceramic, and the second valve member is disposed on the first valve member and the mating surface therebetween is flat. With a ceramic material, a more flat mating surface can be machined. However, those skilled in the art will appreciate that other suitable materials are also possible, such as plastics.

According to another aspect of the present invention, the first valve member further has a slurry injection passage through which the slurry is injected into the slurry inlet of the second valve member; the second valve member is a rod member rotatably Mounted within the first valve member for rotation between the dispensing position and the return position; the at least one slurry inlet being two slurry inlets disposed along a circumference of the second valve member, in the dispensing position, One of the two slurry inlets is aligned with the slurry injection channel, in which the other of the two slurry inlets is aligned with the slurry injection channel. In the present invention, it is preferred that the two slurry inlets differ by 180 degrees along the circumferential direction of the second wide member, but other suitable angles such as 90 degrees are also possible, as long as the dispensing outlet can distribute the colorant at the dispensing position and form a reflow position. A portion of the slurry return passage is encompassed within the scope of the invention.

In the present invention, the slurry is a color paste. That is, the above-described dispensing valve assembly is particularly suitable for dispensing a colorant that is easily volatilized and dried. The definition of the color paste will be described in detail below.

The present invention also provides a paste distribution device for a color concentrator, comprising a base frame, a plurality of color paste distribution units disposed on the base frame, and an actuator for the color paste distribution unit. Each of the paste distribution units includes: a paste bucket for storing a color paste; a metering pump for metering a color paste in fluid communication with the paste drum; a dispensing valve assembly according to the present invention, wherein the slurry inlet The metering pump is in fluid communication through a first line, the return outlet being in fluid communication with the paddle barrel through a second line. An actuator is coupled to the second valve member for driving the second valve member to move relative to the first valve member at least between the dispensing position and the retracted position.

Preferably, a three-way valve is also provided between the paddle drum and the metering pump, the three-way valve being configured to allow the colorant from the paddle barrel to be metered to the dispensing manifold.

In the paste distributing device according to the present invention, the plurality of paste distributing units are arranged to be uniformly arranged on the base frame in the circumferential direction, and the distal end where the dispensing outlet of the dispensing valve assembly is located faces the center of the base frame. These distribution outlets are arranged centrally on a circumference and are referred to as "concentrated nozzles" in the toning field. By employing the dispensing valve assembly according to the present invention, the concentrated discharge nozzle of the paste distributing device can be limited to a circumference having a diameter of, for example, less than 46 mm, thereby making the structure of the paste distributing device, particularly the toner, more compact.

According to an aspect of the invention, the color paste distributing device further comprises an upper mounting plate and a lower mounting plate, The first valve member and the second valve member of the valve assembly are clamped between the upper and lower mounting plates.

In one aspect of the invention, the respective dispensing valve assemblies of the plurality of colorant dispensing units are each associated with an actuator.

In a preferred embodiment of the invention, the distribution manifolds of the plurality of colorant dispensing units share an actuator. In the present invention, the actuator is, for example, a stepping motor. It should be understood that any other suitable actuating device, such as a servo motor or the like, can be used.

In the paste distribution device according to the present invention, for example, four, five, six, seven, eight, thirteen or sixteen color paste distribution units may be included. It should be understood that any other suitable number of colorant dispensing units are contemplated as being within the scope of the present invention.

The present invention also provides a method for dispensing a color paste comprising the steps of: providing a color paste bucket for storing a color paste; providing a metering pump for quantitatively supplying color paste in fluid communication with the paste tank; a dispensing valve assembly in accordance with the present invention in fluid communication with the paddle barrel and the metering pump; an actuator for the dispensing valve assembly, the actuator being coupled to the second valve member; driven by the actuator The second valve member is in the dispensing position, at which the slurry can be dispensed from the slurry inlet, the second fluid passage from the at least one dispensing outlet; operating the actuator to drive the second wide member to the return flow a position at which the at least one dispensing outlet is aligned with the at least one return inlet such that slurry is returned from the return outlet to the paste bucket through the at least one dispensing outlet.

Some of the other features of the invention are apparent or known in the art, and a part will be described below in conjunction with its purpose, function, effect and/or advantages. Through the following description and drawings,

DRAWINGS

The invention will be described in detail below with reference to the drawings, in which the same or similar reference numerals indicate the same or similar features.

1 is a schematic structural view of one embodiment of a dispensing valve assembly in accordance with the present invention; FIG. 2 is a cross-sectional view of the dispensing valve assembly of FIG. 1 with the dispensing valve assembly in a dispensing position;

Figure 3 is a cross-sectional view of the dispensing valve assembly of Figure 1 with the dispensing valve assembly in a reflow position; Figure 4 is a cross-sectional view of another embodiment of a dispensing valve assembly in accordance with the present invention, wherein the dispensing valve assembly is in the dispensing position and only Exposing a distribution outlet;

Figure 5 is a cross-sectional view of the dispensing valve assembly of Figure 4 with the dispensing valve assembly in a reflow position; Figure 6 is a cross-sectional view showing another embodiment of a dispensing valve assembly according to the present invention; Figure 7 is a schematic structural view of one embodiment of a colorant dispensing unit in accordance with the present invention, wherein the dispensing wide assembly is in a dispensing position;

Figure 8 is another schematic structural view of the color paste distribution unit of Figure 7, wherein the distribution valve assembly is in a reflow position;

Figure 9a is a schematic view showing the structure of another embodiment of the color paste distributing unit according to the present invention, wherein the metering pump is in fluid communication with the color paste barrel through the three-way wide;

Figure 9b is a schematic view showing the structure of another embodiment of the color paste distribution unit according to the present invention, wherein the metering pump is in fluid communication with the distribution module through the three-way width;

Figure 10 is a layout view of a plurality of valve assemblies in a color paste distribution device according to the invention; Figure 11 is a schematic view showing the structure of a valve assembly in a color paste distribution device according to the present invention; Figure 12 is a color paste distribution according to the present invention. A perspective view of one embodiment of the device; Figure 13 is a top plan view of the colorant dispensing device of Figure 12. List of reference signs

1-first valve member; 11-reflux inlet; 12-reflux outlet; 13-first fluid passage; 2-second valve member; 21-slurry inlet; 22-distribution outlet; 23-second fluid passage; Base frame; 3a-upper mounting plate; 3b-lower mounting plate; 3c-valve fixing member; 4-way valve; 8-coupling; 14-slurry injection channel; 15-first pipe; Pipeline; 41-actuator; 42-syrup bucket; 43-dosing pump; 43a-piston rod; 44-distribution valve assembly; 45-paint bucket. detailed description

Exemplary embodiments of the systems and methods of the present invention are now illustrated in detail with reference to the following description and the accompanying drawings. The drawings are not necessarily to scale unless the In addition, the description of the present invention is not intended to be exhaustive or to limit the scope of the present invention to the specific forms and constructions disclosed in the accompanying drawings. .

In addition, some directional descriptions will be introduced in the description below. "Upper", "lower", "horizontal", "vertical", "front", "back", "distal," and "near end," and the like are based on the specific embodiments shown in the figures.

Fig. 1 schematically shows a structural view of an embodiment of a dispensing valve assembly in accordance with the present invention. This type of dispensing valve assembly is particularly suitable for use in the field of paint grading, such as colorants used in color grading machines. In the distribution device. However, it will be understood by those skilled in the art that the dispensing valve assembly is suitable for dispensing any fluid, particularly a viscous slurry. As used herein, the term "slurry" or "slurry" has the broad meaning of any fluid, viscous fluid that is suitable for use in the field of paint tinting, including but not limited to a variety of paints, coatings.

In the embodiment shown in Fig. 1, the dispensing valve assembly includes a first valve member (lower valve member) 1 and a second valve member (upper member) 2, and the second wide member 2 is connected by a coupling mechanism such as a coupling 8. To the actuator 41, the dispensing valve assembly has a dispensing position and a return position. Referring to Figures 2 and 3, in this embodiment, both the first valve member 1 and the second valve member 2 are constructed in a rectangular shape, and the mating faces therebetween are preferably planar. The first valve member 1 has a return inlet 11 at the upper end of its distal end, a return outlet 12 at its proximal end, and a first fluid passage 13 extending therebetween. The second valve member 2 has a slurry inlet 21 at its upper end, a dispensing outlet 22 at its lower distal end, and a second fluid passage 23 extending between the slurry inlet 21 and the dispensing outlet 22. According to the invention, the second valve member 2 is horizontally movable relative to the first valve member 1 between the dispensing position and the return position. That is, the first valve member is a static valve member and the second valve member is a movable valve member. It should be understood that the first valve member may be provided as a movable valve member and the second valve member may be a static valve member as needed, which is also within the scope of the present invention.

As shown in Figure 2, when slurry is to be dispensed, the second valve member 2 is moved in a direction toward its distal end, exposing the dispensing outlet 22, leaving the dispensing valve assembly in the dispensing position. In the dispensing position, the slurry inlet 21, the second fluid passage 23 and the dispensing outlet 22 form a slurry distribution passage through which slurry from a slurry source (not shown) is dispensed.

As shown in Figure 3, when slurry backflow is required, the second valve member 2 is moved in a direction toward its proximal end, and the dispensing outlet 22 and the return inlet 11 are aligned to position the dispensing valve assembly in the return position. In the reflow position, the slurry inlet 21, the second fluid passage 23, the distribution outlet 22, the return inlet 11, the first fluid passage 13 and the return outlet 12 constitute a return passage through which the slurry can flow back to the slurry source (not shown) ). For such a dispensing valve assembly, the dispensing outlet forms part of the slurry return passage so that slurry can be completely prevented from depositing and drying at any point in the dispensing outlet and at the slurry distribution passage.

4 and 5 respectively show cross-sectional views of another embodiment of a dispensing valve assembly in accordance with the present invention in a dispensing position and a reflow position. The embodiment is substantially identical in construction to the embodiment shown in Figures 1 to 3 except that the number of dispensing outlets 22 and return inlets 11 is replaced by one. The provision of two dispensing outlets has the advantage that the moving distance of the second valve member 2 can be selected according to the amount of slurry dispensed per unit time required to selectively expose one dispensing outlet or two dispensing outlets. Port, to control the speed at which the slurry, such as color paste, is dispensed.

Figure 6 shows a cross-sectional view of a plurality of dispensing valve assemblies integrated together in accordance with another embodiment of the present invention. On the left side of the view, one dispensing valve assembly is shown in the dispensing position, showing the other dispensing valve assembly in the retracted position. In the embodiment as shown, the first valve member 1 is constructed in the form of a sector block, and the plurality of first valve members 1 can be assembled into a hollow cylinder. The second valve member 2 is a cylindrical rod member that is mounted in the first valve member so as to be rotatable relative to the first valve member 1, and has a distal end facing the narrow end of the sector block (also called It is the distal end, that is, the end facing the center of the circle in the radial direction). The first valve member is provided with a slurry injection passage 14 disposed in a direction perpendicular to the radial direction, and the slurry injection passage 14 is preferably located at a wide end (also referred to as a proximal end) of the first valve member. The first valve member 1 is further provided with a return inlet 11 at its narrow end, a return outlet 12 and a first passage 12 extending therebetween. The second valve member 2 is arranged at its proximal end with two slurry inlets 21 along its circumference. The two slurry inlets 21 are preferably arranged offset by 180 degrees in the circumferential direction, but other suitable angles are also possible, for example, can be shifted by 90 degrees. The second valve member 2 is provided at the distal end with a dispensing outlet 22, and the dispensing outlet 22 and the slurry inlet 21 are in communication by the second fluid passage 23.

For the above-described dispensing valve assembly, when the slurry needs to be dispensed, by rotating the second valve member 2 relative to the first valve member 1, one of the two slurry inlets 21 is aligned with the colorant injection passage 14, the dispensing outlet 22 faces downward, and the return inlet 11 is blocked by the unopened portion of the second valve member 2 such that the dispensing valve assembly is in the dispensing position from which slurry from the slurry source can be dispensed.

When the slurry reflow is required, by rotating the second wide member 2 relative to the first wide member, the other of the two slurry inlets 21 is aligned with the colorant injection passage 14, and the dispensing outlet 22 is aligned with the return inlet 11 to thereby distribute The valve assembly is in the return position through which the slurry can be returned to the slurry source. Also, in this embodiment, the dispensing outlet constitutes a portion of the slurry return passage so that deposition and drying of the slurry at the dispensing outlet and at any point of the slurry distribution passage can be completely prevented.

According to a preferred embodiment, the second valve member 2 in the above embodiment may also be provided with only one slurry inlet at its proximal end. Accordingly, the outlet size of the slurry injection passage 14 may be designed to be larger, so that the second valve member is 2 When rotating between the dispensing position and the return position, the slurry inlet is always in fluid communication with the slurry inlet passage 14, and further with the slurry source. Alternatively, when a slurry inlet is provided, the slurry inlet may also be configured as a racetrack-shaped opening in the circumferential direction of the second valve member such that the slurry inlet is rotated when the second valve member is rotated between the dispensing position and the return position. It is always in fluid communication with the slurry inlet passage and, in turn, with the slurry source.

7 and 8 are schematic views showing the structure of one embodiment of a paste distribution unit according to the present invention. As shown, the metering pump 43 passes through the slurry of the first line 15 and the distribution valve assembly 44. The port 21 is in fluid communication, and the color paddle drum 42 is in fluid communication with the return outlet 12 of the dispensing valve assembly 44 through a second line 16 that is coupled to the dispensing valve assembly 44 by a coupling mechanism. In this embodiment, the actuator may be a stepper motor, but those skilled in the art will appreciate that any other suitable actuator, such as a servo motor or the like, may be utilized. As shown, the stepper motor 41 is coupled to the second valve member 2 of the dispensing valve assembly 44 via a coupling 8. In addition, a controller for controlling the output of an actuator such as a stepping motor is also provided. Suitable controllers are known in the art and will not be described again here.

In the reflow position shown in Figure 8, when the piston rod of the metering pump 43 is pulled upward, the color paste passes through the second line 16, the colorant return passage (from the slurry inlet 21, the second fluid passage 23, the distribution outlet 22, and the reflux The inlet 11, the first fluid passage 13 and the return outlet 12 are formed) and the first line 15 is sucked into the measuring cylinder of the metering pump 43; when the piston rod is pressed down, the colorant in the measuring cylinder is pressed down through the first tube The path 15, the colorant return passage, and the second line 16 are returned to the paste tank 42. When the color paste is sucked into the cylinder of the metering pump 43, if the colorant is to be dispensed, the second valve member 2 can be driven by the actuator 41 to the dispensing position as shown in Fig. 7, at which the When the piston rod is depressed, the colorant is dispensed from the metering pump 43 through the first line 15 and the paste distribution channel from the dispensing outlet 22 into the paint bucket 45.

Figures 9a and 9b schematically illustrate another embodiment of a paste dispensing unit in accordance with the present invention, wherein the metering pump 43 is preferably connected to the paste bucket 42 by a three-way width 4, and the metering pump also passes A line 15 and the three-way valve are coupled to the dispensing valve assembly 44, and the dispensing valve assembly 44 is coupled to the slurry barrel 42 via a second line 16 (i.e., a return line).

As shown in Fig. 9a, the three-way valve 4 is opened to bring the metering pump 43 into fluid communication with the paste tank 42, while the communication between the metering pump 43 and the distribution valve assembly 44 is turned off, and the piston rod 43a of the metering pump 43 is pulled up, color The slurry is drawn from the paste bucket into the graduated cylinder of the metering pump 43. If it is desired to dispense the colorant, as shown in Figure 9b, the three-way valve 4 is closed to disconnect the metering pump 43 from the color paddle 42 while opening the communication between the metering pump 43 and the dispensing valve assembly 44 and the dispensing valve assembly 44 is in the dispensing position, pressing down the piston rod 43a of the metering pump to distribute the colorant from the metering cylinder of the metering pump through the first line 15, the colorant distribution channel of the dispensing valve assembly 44 from the dispensing outlet to the paint bucket. If it is desired to return the colorant, it is only necessary to switch the dispensing valve assembly 44 from the dispensing position to the return position. By pulling the piston rod 43a of the metering pump 43 up and down, the colorant can be used in the metering pump, the first line 15, and the dispensing valve assembly. The colorant return passage flows between the second line 16 and the paste tank 42.

In the case where the first line 15 or the second line 16 is long, it is advantageous to add a three-way width. This is because the color paste reflow mainly has two functions, one is to prevent the slurry from drying out, and the other is to discharge The slurry containing the bubbles in the metering pump is returned to the color tank, and the slurry containing the bubbles in the color tank is floated after being left for a certain period of time. If the first line 15 or the second line 16 is long, It is difficult to completely return the gas-containing slurry in the metering pump to the slurry tank, but only to the first line 15 or the second line 16, so that the bubbles are difficult to discharge, compared with other embodiments. The addition of the three-way valve 4 more advantageously solves the above problems. In addition, the use of the three-way valve 4 also has the advantage that only a plurality of switching off positions of the three-way valve are required when the metering pump pumps and pumps the color paste multiple times, and the dispensing valve assembly 44 only needs to be opened. The multiple pumping and pumping of the dosing pump can be completed once and closed, extending the service life of the colorant distribution unit.

In the color paste distributing unit according to the present invention, when the color paste is not required to be dispensed, the dispensing valve assembly 44 can be moved to the return position by the actuator 41, thereby sealing the dispensing outlet, preventing air from entering the dispensing outlet and the slurry discharging line. Medium to prevent the color paste from drying out at and near the dispensing outlet and at the slurry line. Some color pastes are easily deposited in the slurry line without being used for a long time. By the colorant distribution unit of the present invention, especially the distribution valve assembly, the color paste can be periodically recirculated, thereby avoiding the color paste in the pipeline. Deposition and dry knots.

Figure 10 is a schematic view showing the structure of a paste distributing device according to the present invention. For the sake of clarity, only one complete color paste distributing unit is shown, and the color paste bucket, the metering pump, and the like in the other colorant dispensing unit are removed. The connecting pipe and the actuator, and the base frame installed in the color paste distribution unit. As shown in the figure, a plurality of color paste distributing units are uniformly arranged along a circumference of a circumference, and the number of color paste distributing units shown in the drawing is sixteen, but the number of color paste distributing units may also be twelve. Nine, eight, seven, six, four, etc. It will be appreciated that a suitable number of colorant dispensing units can be selected as desired. So configured to concentrate the dispensing outlet of the paste dispensing unit in a smaller range, referred to as a "concentrated tapping nozzle", for example, the concentrated tapping nozzle of the present invention can be limited to a circumference of, for example, a diameter of 46 mm. Thereby making the mechanism of the color mixing machine more compact.

The paste dispensing device according to the present invention is particularly suitable for use in fully automatic simultaneous infusion tinters. In this color paste distributing device, a plurality of metering pumps can be simultaneously driven by a driving motor (not shown) to realize simultaneous injection of a plurality of metering pumps. In addition, each metering pump can also be driven by a corresponding driving motor, which can drive the respective metering pumps at the same time, complete the color paste in multiple metering pumps and simultaneously, but can also be selected according to needs. Drive the dosing pump and dispense the desired colorant. As shown in FIG. 10, each of the dispensing valve assemblies 44 can each be associated with a respective actuator 41. However, those skilled in the art will appreciate that in the present invention, multiple dispensing valve assemblies 44 may share a single actuator. When an actuator is shared, the actuator can simultaneously drive the second valve member of the distribution valve assembly, for example, by a linkage mechanism of the same number as the distribution valve assembly. Extend forward, or pull back at the same time. It should be understood that other suitable attachment mechanisms contemplated between the actuator and the dispensing valve assembly are also possible.

Figure 11 is a schematic view showing the structure of a paste distributing device according to the present invention. For the sake of clarity, only one dispensing valve assembly is shown, and no excellent pulp drum, metering pump or the like is shown. As shown, the distribution valve assembly is mounted to the base frame 3 via the upper mounting plate 3a and the lower mounting plate 3b. Preferably, a valve fixing member 3c is provided on both lateral sides of the first valve member 1 and the second valve member 2, and the distribution wide assembly 44 is held in position by the upper mounting plate 3a, the lower mounting plate 3b, and the wide fixing member 3c. 3 on. In the embodiment shown in the figures, the valve holder 3c is a separate component, and each of the dispensing valve assemblies 44 requires two valve holders 3c. To hold the sixteen dispensing valve assemblies in place, multiple Separate valve mounts. Alternatively, it is also possible to configure the valve fixing members as a circular ring member, and a through hole for receiving the first valve member and the second valve member is provided along the circumference of the member, the through hole being sized to enable The second valve member is horizontally movable relative to the first valve member.

Figures 12 and 13 show perspective and top views, respectively, of one embodiment of a paste dispensing device in accordance with the present invention. In this embodiment, the sixteen colorant distributing units are arranged in a circular shape in the circumferential direction, leaving a space in the middle for facilitating cleaning of the dispensing outlet (i.e., the concentrated discharging nozzle), the sixteen dispensing outlets being concentrated, for example, 46 mm. Within the circumference. The color paste distribution device adopting the configuration has a compact structure, a small space occupation, and can realize several color pastes that require color matching at the same time and is injected into a latex paint base paint bucket having a small barrel mouth to realize rapid color matching and prevent The pulp outlet is dry. In addition to preventing the dry knot, the precision of the color paste injection is improved, and the accuracy of the color correction is ensured.

The present invention has been particularly shown and described with reference to the foregoing embodiments, which are merely illustrative. It will be appreciated by those skilled in the art that <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The above description of the invention should be understood to include all novel and non-obvious combinations of the elements described herein.

Claims

A distribution valve assembly comprising:

a valve member (1) having at least one return inlet (11), at least one return outlet (12), and a first fluid passage (13) extending between the return inlet (11) and the return outlet (12) );

a second valve member (2) movable relative to the first valve member (1) between a dispensing position and a return position, the second valve member (2) having at least one slurry inlet (21) located in the second valve At least one dispensing outlet (22) at the distal end of the member (2), and a second fluid passage (23) extending between the slurry inlet (21) and the at least one dispensing outlet (22);

Wherein the at least one return inlet (11) corresponds to the number of the at least one dispensing outlet (22), at which the slurry can pass through the slurry inlet (21), the second fluid passage from the at least A dispensing outlet (22) is dispensed, in which the at least one dispensing outlet (22) is aligned with the at least one return inlet (11) such that slurry is passed from the at least one dispensing outlet (22) The reflux outlet (12) is refluxed to the slurry source.

2. The dispensing valve assembly of claim 1 wherein:

The at least one return inlet (11) is a return inlet and is located at a distal end of the first valve member (1), the at least one return outlet (12) is a return outlet and is located at the first valve member (1) Near end

The at least one slurry inlet (21) is a slurry inlet and is located at a proximal end of the second valve member (2), and the at least one distribution outlet (22) is a distribution outlet;

The second wide member (2) is horizontally movable relative to the second wide member between the dispensing position and the return position.

3. The dispensing valve assembly of claim 1 wherein:

The at least one return inlet (11) is two return inlets and is located at a distal end of the first valve member (1), and the at least one return outlet (12) is a return outlet and is located at the first valve member (1) Near end;

The at least one slurry inlet (21) is a slurry inlet and is located at a proximal end of the second valve member (2), and the at least one distribution outlet (22) is two distribution outlets;

4. The dispensing valve assembly of claim 2, wherein the first valve member (1) and the The second valve member (2) is each made of ceramic, and the second valve member (2) is disposed on the first valve member (1) with a mating surface therebetween.

5. The dispensing valve assembly of claim 1 wherein:

The first valve member (1) further has a slurry injection passage (14) through which the color slurry is injected into the slurry inlet (21) of the second valve member (2);

The second wide member (2) is a rod member rotatably mounted in the first wide member (1) to rotate between the dispensing position and the return position;

The at least one slurry inlet (21) is two slurry inlets (21) arranged along the circumference of the second valve member (2), in the dispensing position, one of the two slurry inlets (21) The slurry injection channel (14) is aligned, at which point the other of the two slurry inlets (21) is aligned with the slurry injection channel (14).

6. The dispensing valve assembly of claim 1 wherein the slurry is a colorant.

A color paste distribution device for a color concentrator, comprising a base frame (3), a plurality of color paste distribution units (4) disposed on the base frame, and a color paste distribution unit for the color paste distribution unit Actuator (41), each of the colorant dispensing units comprises:

a color paste bucket (42) for storing color paste;

a metering pump (43) for metering the color paste in fluid communication with the paste tank (42);

The dispensing valve assembly (44) of claim 1 wherein said slurry inlet (21) is in fluid communication with said metering pump through a first line (15), said return port (12) passing through a second line ( 16) fluidly communicating to the paste bucket (42);

The actuator (41) is coupled to the second valve member (2) for driving the second valve member (2) relative to the first valve member (1) at least between the dispensing position and the return position motion.

8. The paste distribution device according to claim 7, further comprising a three-way valve (17) between the paste bucket and the metering pump, the three-way valve being configured to allow from the paste bucket (42) The paste is metered by the metering pump (43) to the dispensing valve assembly (44).

9. The paste distribution device according to claim 7, wherein the plurality of color paste distribution units are arranged to be circumferentially uniformly arranged on the base frame (3), and the distribution of the distribution valve assembly The distal end where the outlet (22) is located faces the center of the base frame (3).

10. The paste distribution device according to claim 7, wherein the at least one return inlet is a return inlet (11) and is located at a distal end of the first valve member (1), the at least one reflow The outlet (12) is a return outlet (12) and is located at a proximal end of the first valve member (1);

The at least one slurry inlet (21) is a slurry inlet (21) and is located at the second valve member (2) a proximal end, the at least one dispensing outlet (22) is a dispensing outlet (22);

The second wide member (2) is horizontally movable relative to the first wide member (1) between the dispensing position and the return position.

11. The paste distribution device according to claim 7, wherein the at least one return inlet (11) is two return inlets (11) and is located at a distal end of the first valve member (1). Said at least one return outlet (12) is a return outlet (12) and is located at a proximal end of the first valve member (1);

The at least one slurry inlet (21) is a slurry inlet (21) and is located at a proximal end of the second valve member (2), and the at least one distribution outlet (22) is two distribution outlets (22);

12. The paste distribution device according to claim 10, wherein the first valve member (1) and the second valve member (2) are both made of ceramic, and the first valve member (1) is arranged The mating surface on the second valve member (2) and between the two is planar.

13. The paste distribution device according to claim 9, further comprising an upper mounting plate (3a) and a lower mounting plate (3b), the first valve member (1) of the dispensing valve assembly and the The second valve member (2) is sandwiched between the upper mounting plate (3a) and the lower mounting plate (3b).

14. The paste distribution device according to claim 7, wherein the distribution wide assemblies of the plurality of color paste distribution units are each assigned to one of the actuators (41).

The paste distribution device according to claim 7, wherein the distribution wide members of the plurality of color paste distribution units share one of the actuators (41).

16. A method for dispensing a color paste comprising the steps of:

Providing a color paste bucket (42) for storing color paste;

Providing a metering pump (43) for quantitatively supplying color paste in fluid communication with the paste tank;

A dispensing valve assembly (44) is provided in fluid communication with the color paddle and the metering pump, respectively, the dispensing valve assembly comprising: a first valve member (1) having at least one return inlet (11), at least one return outlet (12) And a first fluid passage (13) extending between the return inlet (11) and the return outlet (12); the second valve member (2) is dispensable relative to the first valve member (1) Moving between a position and a return position, the second valve member (2) has at least one slurry inlet (21), at least one dispensing outlet (22) at the distal end of the second valve member (2), and at the slurry inlet (21) a second fluid passage extending between the at least one dispensing outlet (22), wherein the at least one return inlet (11) corresponds to the number of the at least one dispensing outlet (22);

Providing an actuator (41) for the dispensing valve assembly, the actuator being coupled to the second valve member (2); Driving the second wide member (2) to the dispensing position by means of the actuator, at which the slurry can be dispensed from the slurry inlet (21), the second fluid passage from the at least one dispensing outlet (22) Operating the actuator to drive the second valve member (2) to the return position in which the at least one dispensing outlet (22) is aligned with the at least one return inlet (11) to allow slurry to pass through The at least one dispensing outlet (22) is recirculated from the return outlet (12) to the paste bucket (42).

17. The method of claim 16 wherein:

The at least one return inlet (11) is a return inlet and is located at a distal end of the first valve member (1), the at least one return outlet (12) is a return outlet and is located at the first valve member (1) a proximal end; the at least one slurry inlet (21) is a slurry inlet and is located at a proximal end of the second valve member (2), and the at least one distribution outlet (22) is a distribution outlet;

Manipulating the actuator drives the second wide member (2) to move horizontally relative to the first wide member between the dispensing position and the return position.