Liquid distributor

Abstract

The utility model relates to a liquid distributor, in particular to a liquid distributor for a coloring agent or color mixing paste of paint, which comprises a valve, the valve comprises a valve casing, a valve core is rotatably arranged in the valve casing, the valve casing comprises a feeding channel and a distribution opening, an auxiliary distribution channel and at least one main channel are arranged in the valve core, and the auxiliary distribution channel is communicated with the main channel. The maximum included angle alpha is formed between the main channel radial section and the auxiliary distribution channel radial section; (1) when the radial section of the auxiliary distribution channel is aligned with the distribution opening, at least one main channel is communicated with the feeding channel; (2) when the radial section of one main channel is aligned with the distribution opening, other main channels and auxiliary distribution channels are blocked by the inner wall of the valve shell; (3) when the radial section of the auxiliary distribution channel is matched with the feeding channel, the main channels are staggered from the distribution opening, in the state, at least one main channel is communicated with the feeding channel, and the other main channels are blocked by the inner wall of the valve shell; or all the main channels are blocked by the inner wall of the valve shell.

Description

TECHNICAL FIELD

[0001] The present utility model relates to a liquid dispenser, in particular for a colorant or toner for paint. Such a dispenser generally comprises a pump and a valve which allows the pump to draw a quantity of colorant from a container and to dispense it into, for example, a container such as a paint pot. BACKGROUND

[0002] The colorant must be dosed and metered very precisely in order to produce a paint which matches the desired color. For this purpose, some dispensers have a pump which can dispense both large volumes and small volumes.

[0003] CN202380025606.8 proposes a liquid dispenser, see Figure 1 , comprising a valve 11, the valve 11 comprises a valve housing 13, the valve housing 13 is provided with a valve core 14 inside rotation, the valve housing 13 comprises an inlet channel 15 connected to the material tank 3 in the upper and the dispensing opening 16 of the lower material, wherein the valve core 14 is respectively provided with a thinner auxiliary dispensing channel 48, the auxiliary dispensing channel 48 is used for small volume discharge, a thicker main channel 42 is used for suction and large volume discharge, and a return channel 51 is symmetrically arranged on the valve core 14 relative to the auxiliary dispensing channel 48, one end of the channel is a radial section, the radial section is connected to the outer surface of the valve core 14 for cooperation with the inlet channel 15 or the dispensing opening 16, the other end is an axial section, the axial section is connected to the piston rod (see the patent document), and the suction or feeding work is realized through the piston extension and retraction.

[0004] There is a problem in this structure, see the figure: when the main channel 42 cooperates with the inlet channel 15, the return channel 51 and the auxiliary dispensing channel 48 are all sealed, at this time the piston rod can normally suck the slurry, when the auxiliary dispensing channel 48 cooperates with the dispensing opening 16 small volume discharge, the return channel 51 plays a role of returning material, and the excess slurry returns to the material tank 3; when the main channel 42 cooperates with the inlet channel 15, the material can be independently returned, but when the auxiliary dispensing channel 48 cooperates with the inlet channel 15, the return channel 51 cooperates with the dispensing opening 16, at this time the auxiliary dispensing channel 48 cannot independently return (because it will discharge from the return channel 51), which leads to that the inlet channel 15 is easy to accumulate material, and because the auxiliary dispensing channel 48 is thin, and because the colorant or toner is easy to precipitate, a part of the toner is left in the auxiliary dispensing channel due to no backflow, and these toners are in a static state, which is easy to cause solidification and blockage. UTILITY MODEL CONTENTS

[0005] In order to solve the problems that the auxiliary dispensing channel cannot backflow in the technical solutions of the above patent, the auxiliary dispensing channel is probably blocked by toner precipitation, causing failure, and the channel for sucking toner is thin and the resistance for sucking toner is large, the utility model provides a liquid dispenser.

[0006] The utility model discloses a liquid distributor, including valve 11, valve 11 includes valve housing 13, and the valve core 14 is arranged in rotation in valve housing 13, and valve housing 13 includes inlet channel and distribution opening 16, the valve core 14 is arranged in vice distribution channel 48 and at least one main channel 42, and the biggest included angle α that constitutes between main channel 42 radial section and vice distribution channel 48 radial section, so that:

[0007] ①Vice distribution channel 48 radial section is aligned with distribution opening 16 simultaneously, and at least one main channel 42 is in the communication state with inlet channel;

[0008] ②One of main channel 42 radial section is aligned with distribution opening 16 simultaneously, and other main channel 42 and vice distribution channel 48 are blocked by valve housing 13 inner wall;

[0009] ③Vice distribution channel 48 radial section cooperates with inlet channel, and main channel 42 is staggered with distribution opening 16, and in this state, at least one main channel 42 is in the communication state with inlet channel, and other main channel 42 is blocked by valve housing 13 inner wall, or all main channel 42 is blocked by valve housing 13 inner wall.

[0010] As a kind of scheme, the inlet channel is inlet extension channel 100, and the cross section of inlet extension channel 100 is strip-shaped.

[0011] Further, the center line of the inlet extension channel 100 coincides with the center line of the valve core 14 or deviates.

[0012] Further, the inlet extension channel 100 is circular arc shape at the valve core 14, and the central angle of the arc line of the circular arc shape is 45 degrees to 135 degrees.

[0013] As a kind of scheme, the inlet channel includes inlet main channel 15 and at least one second inlet channel 200 arranged in parallel with inlet main channel 15.

[0014] Further, the main channel 42 is two, and when two main channels 42 are in the communication state with inlet channel and suck material, vice distribution channel 48 is blocked by valve housing 13 inner wall or vice distribution channel 48 is also in the communication state with inlet channel.

[0015] Further, the included angle α is 45 degrees to 135 degrees.

[0016] Relative to prior art, the utility model carries out research and development improvement to the cooperation relationship between vice distribution channel 48, main channel 42 and inlet channel, distribution opening 16, so that on the basis of satisfying normal material sucking and discharging in original scheme, vice distribution channel 48 has the function of cooperating with inlet channel to return material, and at this time, main channel 42 is not in the discharging state when returning material. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of a prior art valve body structure;

[0018] Figure 2 is a schematic diagram of a valve body structure of scheme one, wherein the sub distribution channel corresponds to the distribution opening;

[0019] Figure 3 is a schematic diagram of a valve body structure of scheme one, wherein the main channel corresponds to the distribution opening;

[0020] Figure 4 is a schematic diagram of another structure of the inlet extension channel of the valve body of scheme one;

[0021] Figure 5 is a schematic diagram of another structure of the main channel of scheme one;

[0022] Figure 6 is a perspective view of another structure of scheme one;

[0023] Figure 7 is a schematic diagram of one of the structures of scheme two, and one of the main channels cooperates with the inlet main channel to suck material (radial section along the valve core);

[0024] Figure 8 is a schematic diagram of one of the structures of scheme two, and one of the main channels cooperates with the inlet main channel to suck material (axial section along the valve core);

[0025] Figure 9 is a schematic diagram of one of the structures of scheme two, and one of the main channels cooperates with the distribution opening to discharge material (radial section along the valve core);

[0026] Figure 10 is a schematic diagram of one of the structures of scheme two, and one of the main channels cooperates with the distribution opening to discharge material (axial section along the valve core);

[0027] Figure 11 is a schematic diagram of one of the structures of scheme two, and the sub distribution channel cooperates with the distribution opening to discharge material (radial section along the valve core);

[0028] Figure 12 is a schematic diagram of one of the structures of scheme two, and the sub distribution channel cooperates with the distribution opening to discharge material (axial section along the valve core);

[0029] Figure 13 is a schematic diagram of one of the structures of scheme two, and the sub distribution channel cooperates with the second inlet channel to return flow (radial section along the valve core);

[0030] Figure 14 is a schematic diagram of one of the structures of scheme two, and the sub distribution channel cooperates with the second inlet channel to return flow (axial section along the valve core);

[0031] Figure 15 is a schematic view of structure two of scheme two, and one of the main channels matches the material main channel suction (along the radial section of the valve core);

[0032] Figure 16 is a schematic view of structure two of scheme two, and one of the main channels matches the material main channel suction (along the axial section of the valve core);

[0033] Figure 17 is a schematic view of structure two of scheme two, and one of the main channels matches the material main channel suction (along the radial section of the valve core);

[0034] Figure 18 is a schematic view of structure two of scheme two, and one of the main channels matches the material main channel suction (along the axial section of the valve core);

[0035] Figure 19 is a schematic view of structure two of scheme two, and one of the main channels matches the material main channel suction (along the radial section of the valve core);

[0036] Figure 20 is a schematic view of structure two of scheme two, and one of the main channels matches the material main channel suction (along the axial section of the valve core);

[0037] Figure 21 is a schematic view of structure two of scheme two, and one of the main channels matches the material main channel suction (along the radial section of the valve core);

[0038] Figure 22 is a schematic view of structure two of scheme two, and one of the main channels matches the material main channel suction (along the axial section of the valve core);

[0039] Figure 23 is a schematic view of structure three of scheme two.

[0040] Wherein, the material extension channel 100, the second material channel 200, the material tank 3, the tubular channel 8, the valve 11, the valve housing 13, the valve core 14, the distribution opening 16, the material main channel 15, the piston head 30, the auxiliary piston 40, the main channel 42, the fine cavity 46, the auxiliary distribution channel 48, the main distribution channel 51. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] In the utility model, unless another explicit provision and limitation, the orientation or position relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or position relation shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, cannot be understood as the limitation of the utility model.

[0043] It should be noted that the utility model improves CN202380025606.8, and mainly improves the inlet channel structure in the valve core 14, and partially improves the auxiliary distribution channel 48 and the main channel 42, and other parts not mentioned are not changed, and the cooperation between the parts is not affected, the part number in the embodiment is used in CN202380025606.8, only the name is changed.

[0044] As seen Figure 1 , the structure in CN202380025606.8, including valve 11, valve 11 includes valve housing 13, valve core 14 is rotationally arranged in valve housing 13, valve housing 13 includes inlet channel 15 connected to tank 3 in upper and distribution opening 16 for discharging in lower, wherein valve core 14 is respectively provided with finer auxiliary distribution channel 48, auxiliary distribution channel 48 is used for small volume discharging, and main channel 42 is coarser, main channel 42 is used for suction and large volume discharging, and return channel 51 is symmetrically arranged on valve core 14 relative to auxiliary distribution channel 48, one end of these channels is radial section, radial section is connected with the outer surface of valve core 14 for cooperating with inlet channel 15 or distribution opening 16, the other end is axial section, axial section is connected with piston rod, see the patent document, suction or feeding work is realized through the extension of piston.

[0045] The utility model improves: a liquid distributor, including valve 11, the valve 11 includes valve housing 13, valve core 14 is rotationally arranged in valve housing 13, valve housing 13 includes inlet channel and distribution opening 16, the valve core 14 is provided with auxiliary distribution channel 48 and at least one main channel 42, the maximum included angle α formed between the radial section of main channel 42 and the radial section of auxiliary distribution channel 48;

[0046] It should be noted that, unlike the original scheme CN202380025606.8, the inlet channel 15 is single and can only cooperate with one valve upper channel; in the utility model, the "inlet channel" is a general concept, and the corresponding structure is set according to the specific requirement.

[0047] ① When the radial section of the auxiliary distribution channel 48 is aligned with the distribution opening 16, at least one main channel 42 is in communication with the feed channel, and the other main channels 42 can be in communication with the feed channel or blocked. In this case, a small volume of material is discharged, and at least one main channel 42 returns the material;

[0048] ② When the radial section of one of the main channels 42 is aligned with the distribution opening 16, the other main channels 42 and the auxiliary distribution channels 48 are blocked by the inner wall of the valve housing 13, and the large-volume discharge is carried out normally;

[0049] ③ When the radial section of the auxiliary distribution channel 48 cooperates with the feed channel, the main channel 42 is staggered with the distribution opening 16, that is, at this time the auxiliary distribution channel 48 can return materials independently. In this state, at least one main channel 42 is in a connected state with the feed channel, and the other main channels 42 are blocked by the inner wall of the valve housing 13, that is, they return materials together; or all the main channels 42 are blocked by the inner wall of the valve housing 13, that is, only the auxiliary distribution channel 48 returns materials. Both situations are possible.

[0050] For further information, see Figures 2-6 The feed channel is a feed extension channel 100, and the cross-section of the feed extension channel 100 is a bar. Specifically, it means that the bottom discharge end is widened on the basis of the feed channel 15 of the original plan, so that the formed feed extension channel 100 can simultaneously cooperate with at least two channels of at least one main channel 42 and the auxiliary distribution channel 48.

[0051] Furthermore, the center line of the feed extension channel 100 coincides with or deviates from the center line of the valve core 14. This description means that the feed extension channel 100 can be set away from the center line of the valve core 14 and Figures 2-3 , 5 is located on one side of the valve core 14, that is, compared with the original scheme, the feed channel 15 extends to one side, or is set away from the center line of the valve core 14. Figure 4 Located on both sides of the valve core, that is, compared with the original scheme, the feed channel 15 extends to both sides, or the center line of the feed extension channel 100 coincides with the center line of the valve core 14, and the two sides of the feed extension channel 100 extend to both sides of the valve core 14 respectively, that is, compared with the original scheme, the feed channel 15 extends to both sides equally.

[0052] Furthermore, the contact portion between the feed extension channel 100 and the valve core 14 is in an arc shape, which can be Figure 2-5 The arc groove structure in Figure 6 In the vertically sectioned strip groove structure, the central angle of the arc line is 45 to 135 degrees, that is, the angle of the matching area between the feed extension channel 100 and the valve core 14 on the outer periphery of the valve core 14 is 45 to 135 degrees or an angle range within this range.

[0053] Further, see Figures 7-23 , another solution is proposed, the inlet channel includes an inlet main channel 15 and at least one second inlet channel 200 arranged side by side with the inlet main channel 15, the second inlet channel 200 is located on one side or both sides of the inlet main channel 15:

[0054] For example Figures 7-14 , the second inlet channel 200 is located on the left side of the inlet main channel 15, the main channel 42 and the auxiliary distribution channel 48 are arranged similarly to the original solution, and their working states include:

[0055] ①As Figures 7-8 , one of the main channels 42 cooperates with the inlet main channel 15 to suck material, and the other main channels 42 and the auxiliary distribution channel 48 are blocked;

[0056] ②As Figures 9-10 , one of the main channels 42 cooperates with the distribution opening 16 to discharge material, and the other main channels 42 and the auxiliary distribution channel 48 are blocked, the auxiliary piston 40 does not cooperate with the axial section of the auxiliary distribution channel 48, and the piston head 30 drives the discharge;

[0057] ③As Figures 11-12 , the auxiliary distribution channel 48 cooperates with the distribution opening 16 to discharge material, one of the main channels 42 cooperates with the inlet main channel 15 to return flow, the auxiliary piston 40 cooperates with the axial section of the auxiliary distribution channel 48, and the piston head 30 cooperates with one of the main channels 42 to return flow;

[0058] ④As Figures 13-14 , the auxiliary distribution channel 48 cooperates with the second inlet channel 200 to return flow, the other main channels 42 are blocked, and the auxiliary piston 40 cooperates with the axial section of the auxiliary distribution channel 48.

[0059] For example Figures 15-22 , the second inlet channel 200 is located on the left side of the inlet main channel 15, and the main channel 42 and the auxiliary distribution channel 48 are arranged with an angle change, and their working states include:

[0060] ①As Figures 15-16 , one of the main channels 42 cooperates with the inlet main channel 15 to suck material, and the other main channels 42 and the auxiliary distribution channel 48 are blocked;

[0061] ②As Figures 17-18 , one of the main channels 42 cooperates with the distribution opening 16 to discharge material, and the other main channels 42 and the auxiliary distribution channel 48 are blocked, the auxiliary piston 40 does not cooperate with the axial section of the auxiliary distribution channel 48, and the piston head 30 drives the discharge;

[0062] ③As Figures 19-20At this time, the auxiliary distribution channel 48 matches the distribution opening 16 to discharge, one of the main channels 42 matches the second inlet channel 200 to return, the auxiliary piston 40 matches the axial section of the auxiliary distribution channel 48, and the piston head 30 matches one of the main channels 42 to return.

[0063] ④As Figures 21-22 At this time, the auxiliary distribution channel 48 matches the main inlet channel 15 to return, the other main channels 42 are blocked, and the auxiliary piston 40 matches the axial section of the auxiliary distribution channel 48.

[0064] Figure 23 The structure in the prior art is relative to Figures 15-22 The design is symmetrical, and of course is not limited to the above structure, and the second inlet channel 200 is not limited to one and can be multiple and located on the same side or both sides of the main inlet channel 15. The same as the main inlet channel 15, the second inlet channel 200 is connected to the tank 3 at one end and connected to the surface of the valve core 14 at the other end, and a sealing ring matched with the second inlet channel 200 can be arranged in the valve housing 13.

[0065] Further, to solve another technical problem of the prior art mentioned above, in fact, the main channel 42 itself is also thin, so that when the slurry is sucked from the inlet channel 15, the efficiency is low, and therefore, the main channel 42 is preferably two, the two main channels 42 are in communication with the inlet extension channel 100 to suck material, the auxiliary distribution channel 48 is blocked by the inner wall of the valve housing 13 or the auxiliary distribution channel 48 is also in communication with the inlet extension channel 100, that is, in the optimal state, as Figure 5 shown, the two main channels 42 and the auxiliary distribution channel 48 both play a role in sucking material, increasing the efficiency of sucking material.

[0066] Further, the included angle α is 45 degrees to 135 degrees.

[0067] Further, the valve housing 13 is connected to the tank 3, the tubular channel 8 is arranged on the side of the tank 3, the tubular channel 8 is fixedly connected to the valve housing 13, and the tubular channel 8 is connected to the inlet channel 15, and the structure is used in CN202380025606.8.

[0068] The connection structure of the valve 11 and the piston rod pump is used in CN202380025606.8.

[0069] The above only describes preferred embodiments of the present application, and it should be pointed out that for those skilled in the art, without departing from the overall concept of the present application, a number of changes and improvements can be made, which should also be considered as the protection range of the present application.

Claims

1. A liquid dispenser comprising a valve (11), the valve (11) comprising a valve housing (13) in which a valve spool (14) is rotatably arranged, the valve housing (13) comprising an inlet passage and a dispensing opening (16), characterized in that: The valve core (14) is provided with a sub-distribution channel (48) and at least one main channel (42), and the maximum included angle α between the radial section of the main channel (42) and the radial section of the sub-distribution channel (48) is: ①The radial section of the sub-distribution channel (48) is aligned with the distribution opening (16), and at least one main channel (42) is in communication with the inlet channel; ②The radial section of one of the main channels (42) is aligned with the distribution opening (16), and the other main channels (42) and the sub-distribution channel (48) are blocked by the inner wall of the valve shell (13); ③The radial section of the sub-distribution channel (48) is aligned with the inlet channel, and the main channels (42) are staggered with the distribution opening (16), in this state, at least one main channel (42) is in communication with the inlet channel, and the other main channels (42) are blocked by the inner wall of the valve shell (13); or all main channels (42) are blocked by the inner wall of the valve shell (13).

2. A liquid dispenser as claimed in claim 1, wherein: The inlet channel is an inlet extension channel (100), and the cross section of the inlet extension channel (100) is strip-shaped.

3. A liquid dispenser as claimed in claim 2, wherein: The center line of the inlet extension channel (100) coincides with or deviates from the center line of the valve core (14).

4. A liquid dispenser as claimed in claim 2, wherein: The inlet extension channel (100) is in the shape of a circular arc at the valve core (14), and the central angle of the arc of the circular arc is 45 degrees to 135 degrees.

5. A liquid dispenser as claimed in claim 1, wherein: The inlet channel includes an inlet main channel (15) and at least one second inlet channel (200) arranged in parallel with the inlet main channel (15).

6. A liquid dispenser as claimed in claim 1, wherein: The main channel (42) is two, when the two main channels (42) are in communication with the inlet channel to suck material, the sub-distribution channel (48) is blocked by the inner wall of the valve shell (13) or the sub-distribution channel (48) is also in communication with the inlet channel.

7. A liquid dispenser as claimed in claim 1, wherein: The included angle α is 45 degrees to 135 degrees.

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