CN108194304B

CN108194304B - Large-pump strong-reflux small-pump small-injection small-quantity compound pump

Info

Publication number: CN108194304B
Application number: CN201711400600.7A
Authority: CN
Inventors: 黄松; 薛耀斌; 王保松
Original assignee: Zhengzhou Sanhua Technology and Industry Co Ltd
Current assignee: Zhengzhou Sanhua Technology and Industry Co Ltd
Priority date: 2017-12-22
Filing date: 2017-12-22
Publication date: 2020-02-11
Anticipated expiration: 2037-12-22
Also published as: CN108194304A

Abstract

The large pump strong backflow small pump small injection composite pump comprises a large pump and a small pump with piston structures, wherein the small pump with the piston structures is that a small pump cavity is arranged at the bottom end of an outlet in a large pump cavity, a small piston extends out of the end face of a large piston in the large pump cavity, the small piston and the small pump cavity form a small pump, and the large pump and the small pump form the composite pump; and the control valve controls the circulation of the large and small compound pumps, the control valve comprises a valve body and a valve core, a valve core cavity for accommodating the rotary valve core is arranged in the valve body, and the valve core is arranged in the valve core cavity. According to the invention, the large-amount injection channels and the small-amount injection channels are dredged by utilizing the strong pressure of the injection step of the composite pump, so that the vacuum in the composite pump can be supplemented in time when the vacuum appears in the composite pump during the implementation step, and the long-time waiting for vacuum filling in the composite pump is avoided.

Description

Large-pump strong-reflux small-pump small-injection small-quantity compound pump

Technical Field

The invention relates to the technical field of paint color mixing, in particular to a large-pump strong-reflux small-pump small-injection small-quantity compound pump.

Background

There is a pump valve structure produced by this company, including the big and small pumps of the plunger piston structure, the valve controlling the flow passage of the big and small pumps, the outlet bottom in the big valve cavity sets up a small pump cavity, the small piston stretches out in the big pump cavity, the small piston and the small pump cavity form the small pump, the big pump and the small pump form the compound pump. The valve for controlling the circulation of the large pump and the small pump comprises a circulation structure, color paste pumped out by the composite pump is collected into the color paste barrel after passing through a large amount of pouring-out channels and a small amount of pouring-out channels of the valve core, and then is sucked by the composite pump, the color paste is expected to be sucked back to the composite pump from the color paste barrel through the large amount of pouring-out channels and the small amount of pouring-out channels, the specific structure is CN201310045508.9, the structure is thinner because the large amount of pouring-out channels and the small amount of pouring-out channels are thinner, when the suction step is executed, the color paste flows out from the color paste barrel and respectively enters the large amount of pouring-out channels and the small amount of pouring-out channels, a short circuit is arranged, the color paste is enabled to.

Above-mentioned structure, to the mill base that the consistency is lower, when the mill base passes through the short circuit passageway, also shunt and annotate out the passageway through a large amount and annotate out the passageway with a small amount and pass through. However, when a viscous fluid is encountered, in the composite pump pouring step, that is, when the valve core is in the position for initially closing color paste pouring, the color paste in the color paste barrel can be sucked into the composite pump or pressed back into the color paste barrel from the composite pump, a considerable part of the viscous fluid flows back to the color paste barrel from a short circuit, but the viscous color paste does not completely pass through or passes through a large amount of pouring-out channels and a small amount of pouring-out channels, so that the backflow anti-blocking effect of the large amount of pouring-out channels and the small amount of pouring-out channels is reduced or lost, and the risk of blocking the large amount of pouring-out channels or the small amount of pouring-out channels is caused.

Disclosure of Invention

In order to solve the technical problem of the stopper of the large-amount or small-amount pouring channel of the valve core, the invention utilizes the strong pressure of the pouring step of the compound pump in CN201410792472.5 to dredge the large-amount and small-amount pouring channels, and can reduce the reflux resistance of the compound pump when a large amount of color paste is refluxed. When the pouring-out step is implemented, the vacuum in the compound pump can be supplemented in time, and the phenomenon that the interior of the compound pump waits for vacuum filling for a long time is avoided.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the large pump strong backflow small pump small injection composite pump comprises a large pump and a small pump with piston structures, wherein the small pump with the piston structures is that a small pump cavity is arranged at the bottom end of an outlet in a large pump cavity, a small piston extends out of the end face of a large piston in the large pump cavity, the small piston and the small pump cavity form a small pump, and the large pump and the small pump form the composite pump; the control valve comprises a valve body and a valve core, a valve core cavity for accommodating the rotary valve core is arranged in the valve body, and the valve core is arranged in the valve core cavity; a channel A is arranged on the valve body, one end of the channel A is communicated with the large pump, a channel B is arranged on the valve body, one end of the channel B is communicated with the remaining small pump, the other end of the channel A forms a valve core A port on the valve core cavity, and the other end of the channel B forms a valve core B port on the valve core cavity; a color paste barrel channel communicated with the color paste barrel is arranged in the valve body, and the color paste barrel channel forms a valve core color paste barrel opening on the valve core cavity; the valve body is also provided with a color paste injection port; set up the case on the case and annotate out the passageway, the case is annotated out the passageway and is arranged in the mill base and annotate export position and annotate out thick liquid, its characterized in that: the valve core is provided with a channel, so that when the valve core injection channel is in a backflow state, one of the port A of the channel A or the port B of the channel B is only communicated with the valve core injection channel, and the valve core injection channel is communicated with the color paste barrel channel; the rest channel A or channel B is directly communicated with the color paste barrel channel through a channel arranged on the valve core; when the valve core injection channel is in the injection state, one of the channel A and the channel B or both the channel A and the channel B are communicated with the valve core injection channel.

The port A of the valve core and the port B of the valve core are positioned on the same circumference of the cavity of the valve core, the number of the injection channels of the valve core is two, namely a port X injection channel and a port Y injection channel, the port X injection channel and the port Y injection channel are communicated with an axis channel arranged on the valve core, when the valve core is positioned in a reflux state, one of the channel A or the channel B is communicated with the axis channel of the valve core, the axis channel is communicated with the port X injection channel and the port Y injection channel, and the port X injection channel and the port Y injection channel are correspondingly communicated with the color paste barrel channel and are collected to the color paste barrel; the rest channel A or channel B is directly led to a color paste barrel channel at the axis part of the bottom end of the valve core cavity through an inclined channel arranged on the valve core and is led into the color paste barrel; when the valve core X injection channel is in the injection state, one of the channel A and the channel B is communicated with the valve core X injection channel through the axis channel; when the valve core Y injection channel is in the injection state, the channel A and the channel B are communicated with the valve core Y injection channel through the axis channel to be injected.

A large pump inlet and a small pump outlet are arranged in the valve body, a first radial channel, a second radial channel and a third radial channel are arranged on the axis channel of the valve core, a first injection channel and a second injection channel are also arranged at one end of the axis channel of the valve core, the diameter of the first injection channel is smaller than that of the second injection channel, an inclined channel is arranged at the other end of the valve core and is connected with the inlet and the outlet of the color paste barrel, when the pump valve is in an initial state, the axes of the large pump inlet and outlet, the small pump inlet and outlet, the first radial channel, the second radial channel and the third radial channel are located in the same plane, the first radial channel and the third radial channel are coaxially arranged, the first injection channel and the second injection channel are coaxially arranged, the first radial channel and the first injection channel are arranged in parallel, and the axes of the inclined channel, the small pump inlet and outlet and the second radial channel are located in the same plane.

By adopting the technical scheme, the invention has the following beneficial effects:

the invention is mainly characterized in that when the composite pump valve is at the initial position, namely the valve core of the pump valve is at the closed injection port, the composite pump can suck color paste from the color paste barrel, and at the moment, the composite pump can also discharge the color paste in the composite pump back to the color paste barrel; the color paste can be connected with a color paste barrel through an inclined channel before the small piston pump enters an inlet and an outlet (a small pump cavity) of the small pump, so that a large amount of color paste can flow back at low resistance; the backflow process after the small piston pump enters the small pump inlet and outlet (small pump cavity) is called as backflow state: the color paste of the channel A or the channel B can also flow back to the color paste barrel through the inclined channel, and the rest color paste flows back to the color paste barrel through the other channel (the channel A or the channel B) which is not communicated with the inclined channel and is only connected with the back flow channel on the valve body through the injection channel; the valve core is not moved, namely when the composite pump sucks color paste at the initial position, the color paste is sucked through the large-amount pouring-out channel and the small-amount pouring-out channel before the small piston pump is separated from the inlet and the outlet of the small pump (small pump cavity), and the color paste is sucked through the inclined channel at low resistance in a large amount after the small piston pump is separated from the inlet and the outlet of the small pump (small pump cavity);

the compound pump valve includes three types of backflow: one of the large pump or the small pump flows back at low resistance through a return port (an inclined channel), and the rest of the large pump or the small pump flows back strongly through a valve core channel; the second reflux mode is that one of the large pump or the small pump is injected out through one of the large injection port or the small injection port, and the rest of the large pump or the small pump is refluxed at low resistance through a reflux port (an inclined channel); the large pump and the small pump both strongly flow back through the valve core channel;

the communicating channel in the valve is not communicated with the left cavity channel, the right cavity channel and the end part channel of the valve body all the time, so that backflow short circuit is avoided. Due to the embodiment that the inlet and the outlet of the large pump and the inlet and the outlet of the small pump in the figure are exchanged, only the small pump executes strong backflow, and the color paste of the large pump enters the color paste barrel in a short circuit manner, so that the pressure of the small pump can be increased, and stronger strong backflow can be executed; the valve core rotates to realize the mass pouring-out and micro pouring-out of the corresponding color paste, compared with the existing control valve, when the control valve does not act, the color paste in the color paste barrel is forced to flow back into the color paste barrel through two backflow paths after being pressed by a pump pressure, thereby reducing the abrasion among parts of the control valve, prolonging the service life of the control valve, simultaneously completing the strong backflow cleaning between the color paste barrel and the inside of the control valve, and ensuring the service performance and the service state of the color paste pouring-out channel and the color paste in the valve core. Most expensive, the structure reduces the manufacturing cost of the valve core in the prior art, and is a cheap and high-quality structure.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram illustrating a state of strong backflow of a large pump and low resistance backflow of a small pump according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the embodiment of FIG. 2 in a bulk grouting state;

FIG. 4 is a schematic diagram illustrating a small grouting state of the embodiment in FIG. 2;

FIG. 5 is a schematic diagram of a plurality of strong reflow conditions of the embodiment of FIG. 2;

FIG. 6 is a schematic structural diagram illustrating a state of strong backflow of a small pump and low resistance backflow of a large pump according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of the embodiment of FIG. 6 in a bulk grouting state;

FIG. 8 is a schematic diagram illustrating a small grouting state of the embodiment in FIG. 6;

FIG. 9 is a schematic diagram of a plurality of strong reflow conditions of the embodiment of FIG. 6;

FIG. 10 is a structural diagram illustrating a state where a large pump pumps color paste with strong reflux and a small pump pumps color paste with low resistance according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of the embodiment of FIG. 10 in a bulk grouting state;

FIG. 12 is a schematic diagram of a plurality of strong reflow conditions of the embodiment of FIG. 10;

FIG. 13 is a schematic structural diagram of a non-working position of the embodiment of FIG. 10;

FIG. 14 is a structural diagram illustrating a state in which a small pump pumps color paste strongly in a backflow manner and a large pump pumps color paste weakly in a low-resistance manner according to an embodiment of the present invention;

FIG. 15 is a schematic diagram of the embodiment of FIG. 14 in a bulk grouting condition;

FIG. 16 is a schematic structural diagram of a non-working position of the embodiment shown in FIG. 14;

FIG. 17 is a schematic diagram of a plurality of strong reflow conditions of the embodiment of FIG. 14;

FIG. 18 is a structural diagram illustrating a state in which a small pump pumps color paste strongly in a backflow manner and a large pump pumps color paste weakly in a low-resistance manner according to an embodiment of the present invention;

FIG. 19 is a schematic diagram of the embodiment of FIG. 18 in a bulk grouting condition;

FIG. 20 is a schematic structural diagram of a rest position of the embodiment of FIG. 18;

FIG. 21 is a schematic diagram of a plurality of strong reflow conditions of the embodiment of FIG. 18;

FIG. 22 is a structural diagram illustrating a state where a large pump pumps color paste with strong reflux and a small pump pumps color paste with low resistance according to an embodiment of the present invention;

FIG. 23 is a schematic diagram of the embodiment of FIG. 22 in a bulk-out condition;

FIG. 24 is a schematic structural diagram of a rest position of the embodiment of FIG. 22;

FIG. 25 is a schematic view of the low-resistance pumping color paste of the backflow port of the small-pump small-volume pouring-out in the embodiment of FIG. 22;

FIG. 26 is a structural diagram illustrating a state where a large pump pumps color paste with strong reflux and a small pump pumps color paste with low resistance according to an embodiment of the present invention;

FIG. 27 is a schematic diagram of the embodiment of FIG. 26 in a bulk-out condition;

FIG. 28 is a schematic structural diagram of a rest position of the embodiment of FIG. 26;

FIG. 29 is a schematic structural view of a low-resistance pumping color paste of the backflow port of the small-pump small-volume discharge of the embodiment of FIG. 26;

FIG. 30 is a structural diagram illustrating a state where a small pump inlet and outlet pumps color paste with strong backflow and a large pump inlet and outlet pumps color paste with low resistance according to an embodiment of the present invention;

FIG. 31 is a schematic view of the structure of the embodiment of FIG. 30 showing the inlet and outlet of the large pump and the inlet and outlet of the small pump for simultaneously pouring a large amount of color paste;

FIG. 32 is a schematic view of the structure of the large pump inlet/outlet and the small pump inlet/outlet of FIG. 30 for simultaneously pouring a large amount of color paste;

FIG. 33 is a schematic structural diagram of the rest position of the embodiment in FIG. 30;

FIG. 34 is a structural diagram illustrating a state where a large pump pumps color paste with strong reflux and a small pump pumps color paste with low resistance according to an embodiment of the present invention;

FIG. 35 is a schematic diagram of the embodiment of FIG. 34 illustrating a bulk grouting condition;

FIG. 36 is a schematic view of the embodiment of FIG. 34 showing a structure of a large pump for injecting color paste in small amount and a small pump for pumping color paste in low resistance;

FIG. 37 is a schematic structural diagram of a rest position of the embodiment of FIG. 34;

FIG. 38 is a structural diagram illustrating a state where a large pump pumps color paste with strong reflux and a small pump pumps color paste with low resistance according to an embodiment of the present invention;

FIG. 39 is a schematic view of the embodiment of FIG. 38 showing a structure of pumping color paste at a low resistance by the large pump and pouring color paste by the small pump;

FIG. 40 is a schematic view of the embodiment of FIG. 38 showing the simultaneous color paste pouring by the large and small pumps;

FIG. 41 is a schematic structural diagram of the rest position of the embodiment in FIG. 38;

the above structural schematic diagrams are all structural schematic diagrams of the internal channel of the embodiment of the pump valve.

Detailed Description

The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:

as shown in fig. 1-41, the large-pump strong-backflow small-pump small-injection composite pump comprises a large pump and a small pump with a piston structure, wherein the small pump with the piston structure is that a small pump cavity is arranged at the bottom end of an outlet in a large pump cavity, a small piston extends out of the end face of a large piston in the large pump cavity, the small piston and the small pump cavity form a small pump, and the large pump and the small pump form the composite pump; the control valve comprises a valve body and a valve core, a valve core cavity for accommodating the rotary valve core is arranged in the valve body, and the valve core is arranged in the valve core cavity; a channel A is arranged on the valve body, one end of the channel A is communicated with the large pump, a channel B is arranged on the valve body, one end of the channel B is communicated with the remaining small pump, the other end of the channel A forms a valve core A port on the valve core cavity, and the other end of the channel B forms a valve core B port on the valve core cavity; a color paste barrel channel communicated with the color paste barrel is arranged in the valve body, and the color paste barrel channel forms a valve core color paste barrel opening on the valve core cavity; the valve body is also provided with a color paste injection port; the valve core is provided with a valve core injection channel, viscous liquid is injected when the valve core injection channel is arranged at a color paste injection outlet, and the valve core is provided with a channel, so that when the valve core injection channel is positioned at the initial position of the valve core of the pump valve, color paste can be connected with a color paste barrel through an inclined straight channel before a small piston pump enters a small pump cavity to flow back in a large amount with low resistance; in the backflow state of the initial position, one of the port A of the channel A or the port B of the channel B is only communicated with the valve core injection channel, and the valve core injection channel is communicated with the color paste barrel channel; the rest channel A or channel B is directly communicated with the color paste barrel channel through a channel arranged on the valve core; when the valve core injection channel is in the injection state, one of the channel A and the channel B or both the channel A and the channel B are communicated with the valve core injection channel. Thus, when the valve core is in a reflux state, the small pump pumps out viscous liquid, the viscous liquid with huge pressure enters the valve core injection channel from one of the channel A and the channel B through the channel arranged on the valve core, and the valve core injection channel is dredged, so that the viscous liquid is prevented from being blocked at the position of the thin tube injection channel; similarly, when the valve core is positioned at the initial position, the small pump sucks in viscous liquid, the viscous liquid enters the large pump or one of the small pumps through the valve core injection channel, because the valve core injection channel is thin and has large viscous resistance, vacuum is easily formed in the cavity of the large pump or the small pump, the other channel does not pass through the thin valve core injection channel, the viscous resistance is small, the viscous liquid easily and directly enters the rest of the large pump or the small pump, when the small piston is separated from the small pump cavity, the large pump cavity is communicated with the small pump cavity, the vacuum part is quickly filled with the viscous liquid, and the time for prolonging the vacuum filling time of the viscous liquid through the thin valve core injection channel is saved. This solution of course also includes the prior art pour-out state.

As shown in fig. 1-9, the port a of the valve core and the port B of the valve core are located on the same circumference of the cavity of the valve core, the number of the injecting channels of the valve core is two, and the injecting channels of the valve core are respectively the injecting channel of the valve core X and the injecting channel of the valve core Y, the injecting channel of the valve core X and the injecting channel of the valve core Y are communicated with the axis channel of the valve core, when the valve core is in a reflux state, one of the channel a or the channel B is communicated with the axis channel of the valve core, the injecting channel of the valve core X and the injecting channel of the valve core Y are communicated with the color paste barrel channel correspondingly, and the color paste barrel; the rest channel A or channel B is directly led to a color paste barrel channel at the axis part of the bottom end of the valve core cavity through an inclined channel arranged on the valve core and is led into the color paste barrel; when the valve core X injection channel is in the injection state, one of the channel A and the channel B is communicated with the valve core X injection channel through the axis channel; when the valve core Y injection channel is in the injection state, the channel A and the channel B are communicated with the valve core Y injection channel through the axis channel to be injected.

As shown in fig. 1-5, the large-pump strong-reflux small-pump small-injection composite pump comprises a large composite pump and a small composite pump, wherein the large composite pump comprises a large piston pump a and a small piston pump B, the large piston pump a and the small piston pump B are both communicated with a large pump inlet and outlet 1 and a small pump inlet and outlet 2 when the small piston pump B does not work, the outer surface of a valve body a1 is also provided with a color paste barrel inlet and outlet 10 and a color paste injection outlet Z1, and a valve core is arranged in the valve body a1, wherein the color paste barrel inlet and outlet 10 is divided into a left cavity channel C1, a right cavity channel C2 and an end channel (the end channel is denoted by the reference numeral 10 in fig. 2, namely the color paste barrel inlet and; a valve core A2 arranged in the valve body 1, wherein one end of the valve core A2 is provided with a large-amount injection channel 8 and a small-amount injection channel 7, and the large-amount injection channel 8 and the small-amount injection channel 7 are communicated with an axis channel 3 of the valve core A2; by rotating the valve core A2 at different positions, the channel in the valve core A2 enables the large pump inlet and outlet 1 and the small pump inlet and outlet 2 to be communicated with the color paste barrel inlet and outlet 10 or the color paste injection outlet Z1, and due to the reasons of position display in FIG. 1, the specific structure of the color paste injection outlet Z1 cannot be shown in FIG. 1, but the color paste injection outlet Z1 is located at the position indicated by the line of Z1.

As shown in fig. 1-5, a large pump inlet and outlet 1 and a small pump inlet and outlet 2 are arranged in a valve body a1, a first radial channel 4, a second radial channel 5 and a third radial channel 6 are arranged on an axial channel 3 of a valve core a2, a first pouring channel 7 and a second pouring channel 8 are further arranged at one end of the axial channel 3 of the valve core a2, the diameter of the first pouring channel 7 is smaller than that of the second pouring channel 8, an inclined channel 9 is arranged at the other end of the valve core a2, and one end of the inclined channel 9 is connected with a color slurry barrel inlet and outlet 10, wherein when the pump valve is in a backflow state at an initial position, the axes of the large pump inlet and outlet 1, the small pump inlet and outlet 2, the first radial channel 4, the second radial channel 5 and the third radial channel 6 are located in the same plane, the first radial channel 4 and the third radial channel 6 are coaxially arranged, and the first pouring channel 7 and the second pouring channel 8 are coaxially arranged, the first radial channel 4 is arranged in parallel with the first pouring channel 7, and the axes of the inclined channel 9, the small pump inlet and outlet 2 and the second radial channel 5 are positioned in the same plane. As shown in fig. 2, when the pump valve is in the backflow state at the initial position, the large pump can pump the color paste in a strong backflow manner and the small pump can pump the color paste in a low resistance manner before the small piston pump is separated from the inlet and outlet (small pump cavity) of the small pump; as shown in fig. 3, when the valve core is rotated 90 degrees from the initial position, the large pump and the small pump simultaneously inject color paste from the color paste injection port Z1, and the pump valve is in a large injection state; as shown in fig. 4, the valve core is reversed by 90 degrees from the initial position, a small pump injects color paste from a color paste injection port Z1 in a small amount, and a large pump flows back the color paste with low resistance; as shown in fig. 5, the valve core rotates 180 degrees from the initial position, and the pump valve is in a large flow strong backflow state.

As shown in fig. 1 and 6, a large pump inlet and outlet 11 and a small pump inlet and outlet 12 are arranged in a valve body a1, a first radial channel 14, a second radial channel 15 and a third radial channel 16 are arranged on an axial channel 13 of a valve core a2, a first injection channel 17 and a second injection channel 18 are further arranged at one end of the axial channel 13 of the valve core a2, the diameter of the first injection channel 17 is larger than that of the second injection channel 18, an inclined channel 19 is arranged at the other end of the valve core a2, and one end of the inclined channel 19 is connected with a slurry barrel inlet and outlet 20, wherein when the pump valve is in a backflow state at an initial position, the axes of the large pump inlet and outlet 11, the small pump inlet and outlet 12, the first radial channel 14, the second radial channel 15 and the third radial channel 16 are located in the same plane, the first radial channel 14 and the third radial channel 16 are coaxially arranged, and the first injection channel 17 and the second injection channel 18 are coaxially arranged, the first radial passage 14 is arranged perpendicular to the first ejection passage 17, and the axes of the slant passage 19, the first ejection passage 17, and the second radial passage 15 are located in the same plane. As shown in fig. 6, when the pump valve is in the backflow state at the initial position, the small pump strongly flows back to pump the color paste before the small piston pump is separated from the inlet and outlet (small pump cavity) of the small pump, and the large pump sucks the color paste at a low resistance; as shown in fig. 7, the valve core rotates 90 degrees from the initial position, and a large amount of color paste is simultaneously poured out by the large pump and the small pump; as shown in fig. 8, the valve core is reversed by 90 degrees from the initial position, the color paste is injected by a large pump in a small amount, and the color paste is refluxed by a small pump in a low resistance; as shown in fig. 9, the valve core rotates 180 degrees from the initial position, and the big pump and the small pump are both in a strong backflow suction state.

As shown in fig. 1 and 10, the port a of the valve core (i.e., the port 46 of the valve core on the valve core surface in fig. 10) and the port B of the valve core (i.e., the port 45 of the valve core on the valve core surface in fig. 10) are on the same circumference of the valve core cavity, the outlet channel of the valve core is one, i.e., the outlet channel 48 in fig. 10, when the valve core is in a reflux state, one of the channel a or the channel B is communicated with the axial channel of the valve core, the axial channel is communicated with the outlet channel of the valve core, and the outlet channel of the valve core is correspondingly communicated with the color paste; the rest channel A or channel B is directly led to a color paste barrel channel at the axis part of the bottom end of the valve core cavity through an inclined channel arranged on the valve core and is led into the color paste barrel; as shown in fig. 11, when the valve element discharge passage is in the discharge state, the passage a and the passage B are connected to the valve element discharge passage through the axial passage.

As shown in fig. 10, a large pump inlet/outlet 42 and a small pump inlet/outlet 43 are provided in the valve body, a first radial channel 45, a second radial channel 46 and a third radial channel 47 are provided on the axial channel 44 of the valve core, an injection channel 48 is further provided at one end of the axial channel 44 of the valve core, an inclined channel 49 is provided at the other end of the valve core, and one end of the inclined channel 49 is connected with a slurry barrel inlet/outlet 50, wherein when the pump valve is in a backflow state at an initial position, before the small piston pump is separated from the small pump inlet/outlet (small pump cavity), the axes of the large pump inlet/outlet 42, the small pump inlet/outlet 43, the first radial channel 45, the second radial channel 46 and the third radial channel 47 are located in the same plane, the first radial channel 45 and the third radial channel 47 are coaxially arranged, the first radial channel 45 and the second radial channel 46 are vertically arranged, the third radial channel 47 is parallel to the injection channel 48, The axes of the second radial passage 46 and the small pump inlet/outlet 43 lie in the same plane. As shown in fig. 10, when the pump valve is in the backflow state at the initial position, the large pump strongly flows back to pump the color paste before the small piston pump is separated from the inlet and outlet (small pump cavity) of the small pump, and the small pump sucks the color paste at a low resistance; as shown in fig. 11, the valve core rotates 90 degrees from the initial position, and the large pump and the small pump simultaneously inject color paste; as shown in fig. 12, the valve core rotates 180 degrees from the initial position, and the big pump and the small pump are both in a strong backflow suction state; as shown in fig. 13, the working position, this state is not used on the product.

As shown in fig. 14, a large pump inlet and outlet 51 and a small pump inlet and outlet 52 are provided in the valve body, a first radial channel 54, a second radial channel 55 and a third radial channel 56 are provided on the axial channel 53 of the valve core, an injection channel 57 is further provided at one end of the axial channel 53 of the valve core, an inclined channel 58 is provided at the other end of the valve core, and one end of the inclined channel 58 is connected with a slurry barrel inlet and outlet 59, wherein when the pump valve is in a backflow state at an initial position, the axes of the large pump inlet and outlet 51, the small pump inlet and outlet 52, the first radial channel 54, the second radial channel 55 and the third radial channel 56 are located in the same plane, the first radial channel 54 and the third radial channel 56 are coaxially arranged, the first radial channel 54 and the second radial channel 55 are vertically arranged, and the axes of the inclined channel 58, the second radial channel 55 and the injection channel 57 are located. As shown in fig. 14, when the pump valve is in the backflow state at the initial position, the small pump strongly flows back to pump the color paste before the small piston pump is separated from the inlet and outlet (small pump cavity) of the small pump, and the large pump sucks the color paste at a low resistance; as shown in fig. 15, the valve core rotates 90 degrees from the initial position, the big pump and the small pump simultaneously inject color paste, and only one of the large pump and the small pump injects the working position; as shown in fig. 16, the valve core is reversed 90 degrees from the initial position, which is not used on the product, but can be used for the sealing inspection of the product; as shown in fig. 17, the valve core rotates 180 degrees from the initial position, and both the large and small pumps are in the strong backflow suction state.

As shown in fig. 18, a large pump inlet and outlet 60 and a small pump inlet and outlet 61 are arranged in the valve body, a first radial channel 63 and a second radial channel 64 are arranged on the axial channel 62 of the valve core, an injection channel 65 is further arranged at one end of the axial channel 62 of the valve core, an inclined channel 66 is arranged at the other end of the valve core, and one end of the inclined channel 66 is connected with a slurry barrel inlet and outlet 67, wherein when the pump valve is in a backflow state at an initial position, the axes of the large pump inlet and outlet 60, the small pump inlet and outlet 61, the first radial channel 63 and the second radial channel 64 are positioned in the same plane, the first radial channel 63 and the second radial channel 64 are perpendicular to each other, the injection channel 65 and the first radial channel 63 are perpendicular to each other, and the axes of the inclined channel 66, the second radial channel 64 and the injection. As shown in fig. 18, when the pump valve is in the backflow state at the initial position, the small pump strongly flows back to pump the color paste before the small piston pump is separated from the inlet and outlet (small pump cavity) of the small pump, and the large pump sucks the color paste at a low resistance; as shown in fig. 19, the valve core rotates 90 degrees from the initial position, the big pump and the small pump simultaneously inject color paste, and only one of the large pump and the small pump injects the working position; as shown in fig. 20, the valve core is reversed 90 degrees from the initial position, which is not used on the product, but can be used for the sealing inspection of the product; as shown in fig. 21, the valve core is rotated 180 degrees from the initial position, and the large pump is in a strong backflow suction state.

As shown in fig. 1 and fig. 22, a port of a valve core a (i.e., one of a large pump inlet and a small pump outlet in fig. 22) and a port of a valve core B (i.e., one of a large pump inlet and a small pump outlet in fig. 22) are arranged in parallel with an axis of a cavity of the valve core, two ports of the valve core are arranged, i.e., (a first injection channel 76 and a second injection channel 77 in fig. 22) respectively are a valve core X injection channel and a valve core Y injection channel, the valve core X injection channel and the valve core Y injection channel are communicated with an axis channel arranged on the valve core, when the valve core is in a reflux state, one of the channel a and the channel B is communicated with the axis channel, the axis channel is communicated with the X injection channel and the valve core Y injection channel, and the valve core X injection channel and the valve core Y injection channel are correspondingly communicated with a; the rest channel A or channel B is directly led to a color paste barrel channel at the axis part of the bottom end of the valve core cavity through an inclined channel arranged on the valve core and is led into the color paste barrel; when the valve core X injection channel is in the injection state, one of the channel A and the channel B is communicated with the valve core X injection channel through the axis channel; when the valve core Y injection channel is in the injection state, the channel A and the channel B are communicated with the valve core Y injection channel through the axis channel to be injected.

As shown in fig. 22, the valve body is provided with a large pump inlet/outlet 68, a small pump inlet/outlet 69 and a return port 70, the axial channel 71 of the valve core is provided with a first radial channel 72, a second radial channel 73, a third radial channel 74 and a fourth radial channel 75, one end of the axial channel 71 of the valve core is further provided with a first pouring channel 76 and a second pouring channel 77, the diameter of the first pouring channel 76 is larger than that of the second pouring channel 77, the other end of the valve core is further provided with a first inclined channel 78 and a second inclined channel 79, one end of each of the first inclined channel 78 and the second inclined channel 79 is communicated with the color paste barrel inlet/outlet 80, wherein when the pump valve is in a return state at an initial position, the axes of the first radial channel 72, the second radial channel 73 and the small pump inlet/outlet 69 are located in the same plane, the axes of the third radial channel 74, the fourth radial channel 75 and the large pump inlet/outlet 68 are located in the same plane, the axes of the large pump inlet-outlet 68, the small pump inlet-outlet 69, the first inclined channel 78 and the third radial channel 74 are located in the same plane, the first radial channel 72 and the second radial channel 73 are coaxially arranged, the third radial channel 74 and the fourth radial channel 75 are vertically arranged, the first injection channel 76 and the second injection channel 77 are coaxially arranged, and the first injection channel 76 and the first radial channel 72 are arranged in parallel. As shown in fig. 22, when the pump valve is in the backflow state at the initial position, the large pump strongly flows back to pump the color paste before the small piston pump is separated from the inlet/outlet (small pump cavity) of the small pump, and the small pump sucks the color paste at a low resistance; as shown in fig. 23, the valve core rotates 90 degrees from the initial position, and the large pump and the small pump simultaneously inject color paste; as shown in fig. 24, the valve core is rotated 180 degrees from the initial position, which is not used on the product, but can be used for the sealing inspection of the product; as shown in FIG. 25, the valve core is reversed 90 degrees from the initial position, a small pump is used for small-amount pouring, and the color paste is pumped by the low-resistance backflow port.

As shown in fig. 26, the valve body is provided with a large pump inlet and outlet 81, a small pump inlet and outlet 82 and a return port 83, the large pump inlet and outlet 81, the small pump inlet and outlet 82 and the return port 83 are sequentially arranged from front to back, and the axes are all located in the same plane, the axial channel 84 of the valve core is provided with a first radial channel 85, a second radial channel 86, a third radial channel 87 and a fourth radial channel 88, one end of the axial channel 84 of the valve core is further provided with a first pouring-out channel 89 and a second pouring-out channel 90, the diameter of the first pouring-out channel 89 is larger than that of the second pouring-out channel 90, the other end of the valve core is further provided with an inclined channel 91 and a fifth radial channel 92, one end of the inclined channel 91 and one end of the fifth radial channel 92 are both communicated with the color paste barrel inlet and outlet 93, wherein when the pump valve is in a return state at an initial position, the axes of the first radial channel 85, the, the axes of the third radial channel 87, the fourth radial channel 88 and the large pump inlet and outlet 81 are positioned in the same plane, the axis of the inclined channel 91 and the axis of the large pump inlet and outlet 81 are positioned in the same plane, the first radial channel 85 and the second radial channel 86 are coaxially arranged, the third radial channel 87 and the fourth radial channel 88 are vertically arranged, the diameter of the third radial channel 87 is larger than that of the fourth radial channel 88, the first injection channel 89 and the second injection channel 90 are coaxially arranged, the first injection channel 89 and the first radial channel 85 are arranged in parallel, and the fifth radial channel 92 and the first radial channel 85 are arranged in parallel. As shown in fig. 26, when the pump valve is in the backflow state at the initial position, the large pump strongly flows back to pump the color paste before the small piston pump is separated from the inlet/outlet (small pump cavity) of the small pump, and the small pump sucks the color paste at a low resistance; as shown in fig. 27, the valve core rotates 90 degrees from the initial position, and the large pump and the small pump simultaneously inject color paste; as shown in fig. 28, the valve core is rotated 180 degrees from the initial position, which is not used on the product, but can be used for the sealing inspection of the product; as shown in FIG. 29, the valve core is reversed 90 degrees from the initial position, a small pump is used for small-amount pouring, and the color paste is pumped by the low-resistance backflow port.

As shown in fig. 30, a large pump inlet and outlet 101 and a small pump inlet and outlet 102 which are communicated with a compound pump are arranged on the valve body, the axes of the large pump inlet and outlet 101 and the small pump inlet and outlet 102 are located in the same plane, a first radial channel 104, a second radial channel 105, a third radial channel 106, a fourth radial channel 107 and a fifth radial channel 108 are arranged on an axial channel 103 of the valve core, a first injection channel 109 and a second injection channel 110 are further arranged at one end of the axial channel 103 of the valve core, the diameter of the first injection channel 109 is the same as that of the second injection channel 110, an inclined channel 111 is further arranged at the other end of the valve core, the inclined channel 111 is communicated with a color paste barrel inlet and outlet 112, wherein when the pump valve is in a backflow state at an initial position, the axes of the first radial channel 104, the second radial channel 105 and the large pump inlet and outlet 101 are located in the same plane, the axes of the third radial channel 106, the fourth radial channel 107, the fifth radial channel 108 and the small pump, the axial line of the inclined channel 111 and the axial line of the large pump inlet and outlet 101 are positioned in the same plane, the first radial channel 104 and the second radial channel 105 are coaxially arranged, the third radial channel 106 and the fourth radial channel 107 are vertically arranged, the third radial channel 106 and the fifth radial channel 108 are coaxially arranged, the first injection channel 109 and the second injection channel 110 are coaxially arranged, and the first injection channel 109 and the first radial channel 104 are arranged in parallel. As shown in fig. 30, when the pump valve is in the backflow state at the initial position, the inlet and outlet 102 of the small pump strongly backflow to pump color paste before the small piston pump is separated from the inlet and outlet (small pump cavity) of the small pump, and the inlet and outlet 101 of the large pump strongly backflow to pump color paste; as shown in fig. 31, the valve core rotates 90 degrees from the initial position, and a large amount of color paste is simultaneously injected from the large pump inlet and outlet 101 and the small pump inlet and outlet 102; as shown in fig. 32, the valve core is reversed by 90 degrees from the initial position, and a large amount of color paste is simultaneously injected from the large pump inlet and outlet 101 and the small pump inlet and outlet 102; as shown in fig. 33, the valve core is rotated 180 degrees from the initial position, which is not used on the product, but can be used for the sealing inspection of the product, the two discharge channels of the pump valve structure are the same in size, and in normal use, the pump valve structure is equal to have a spare discharge channel, and after one discharge channel is blocked, the rotatable valve core can be used for ensuring normal discharge by using the other discharge channel.

As shown in fig. 34, the valve body is provided with a large pump inlet/outlet 113 and a small pump inlet/outlet 114, the axes of the large pump inlet/outlet 113 and the small pump inlet/outlet 114 are located in the same plane, the axial channel 115 of the valve core is provided with a first radial channel 116, a second radial channel 117, a third radial channel 118 and a fourth radial channel 119, one end of the axial channel 115 of the valve core is further provided with a first pouring channel 120 and a second pouring channel 121, the diameter of the first pouring channel 120 is smaller than that of the second pouring channel 121, the other end of the valve core is further provided with a first inclined channel 122 and a second inclined channel 123, both the first inclined channel 122 and the second inclined channel 123 are communicated with the mill base inlet/outlet 124, wherein, when the pump valve is in a backflow state at an initial position, the axes of the first radial channel 116 and the small pump inlet/outlet 114 are located in the same plane, the axes of the second radial channel 117, the third radial channel 118, the fourth radial channel 119 and the large pump inlet/outlet 113 are, the axis of the first inclined channel 122 and the axis of the large pump inlet/outlet 113 are located in the same plane, the first radial channel 116 and the second radial channel 117 are arranged in parallel, the third radial channel 118 and the fourth radial channel 119 are vertically arranged, the second radial channel 117 and the fourth radial channel 119 are arranged in the same axial direction, the first injection channel 120 and the second injection channel 121 are arranged in the same axial direction, and the first injection channel 120 and the second radial channel 117 are arranged in parallel. As shown in fig. 34, when the pump valve is in the backflow state at the initial position, the large pump inlet/outlet 113 pumps color paste in a strong backflow manner and the small pump inlet/outlet 114 pumps color paste in a low resistance manner before the small piston pump is separated from the small pump inlet/outlet (small pump cavity); as shown in fig. 35, the valve core rotates 90 degrees from the initial position, and a large amount of color paste is simultaneously injected from the large pump inlet/outlet 113 and the small pump inlet/outlet 114; as shown in fig. 36, the valve core is reversed by 90 degrees from the initial position, the large pump inlet and outlet 113 injects a small amount of color paste, and the small pump inlet and outlet 114 pumps the color paste at a low resistance; as shown in fig. 37, the valve core is rotated 180 degrees from the initial position, which is not used on the product, but can be used for the sealing inspection of the product.

As shown in fig. 1 and fig. 38, the port of the valve core a (i.e. the port of the second outlet channel 98 on the valve core surface in fig. 38), the port of the valve core B (i.e. the port of the inclined channel 100 on the valve core surface in fig. 38), the port of the valve core color paste barrel (i.e. the inlet and outlet ports 96 of the color paste barrel in fig. 38) and the color paste outlet port (i.e. the first outlet channel 97 and the second outlet channel 98 in fig. 38) are on the same circumference of the valve core cavity, the valve body is provided with a big pump inlet and outlet 94 and a small pump inlet and outlet 95, the valve core is provided with a first injection channel 97, a second injection channel 98 and a radial channel 99, the end part of the valve core is also provided with an inclined channel 100, one end of the inclined channel 100 is connected with an inlet and outlet 96 of the color paste barrel, when the pump valve is in a backflow state at an initial position, the axes of the large pump inlet-outlet 94, the small pump inlet-outlet 95, the first discharge passage 97, the second discharge passage 98, and the radial passage 99 all lie in the same plane. As shown in fig. 38, when the pump valve is in the backflow state at the initial position, the large pump strongly flows back to pump the color paste before the small piston pump is separated from the inlet/outlet (small pump cavity) of the small pump, and the small pump sucks the color paste at a low resistance; as shown in fig. 39, the valve core is reversed by 90 degrees from the initial position, the large pump sucks the color paste at low resistance, and the small pump injects the color paste; as shown in fig. 40, the valve core rotates 90 degrees from the initial position, and the large pump and the small pump simultaneously inject color paste; as shown in fig. 41, the valve core is rotated 180 degrees from the initial position, which is not used on the product, but can be used for the sealing inspection of the product.

The above-described embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above-described embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The large pump strong backflow small pump small injection composite pump comprises a large pump and a small pump with piston structures, wherein the small pump with the piston structures is that a small pump cavity is arranged at the bottom end of an outlet in a large pump cavity, a small piston extends out of the end face of a large piston in the large pump cavity, the small piston and the small pump cavity form a small pump, and the large pump and the small pump form the composite pump; the control valve comprises a valve body and a valve core, a valve core cavity for accommodating the rotary valve core is arranged in the valve body, and the valve core is arranged in the valve core cavity; a channel A is arranged on the valve body, one end of the channel A is communicated with the large pump, a channel B is arranged on the valve body, one end of the channel B is communicated with the remaining small pump, the other end of the channel A forms a valve core A port on the valve core cavity, and the other end of the channel B forms a valve core B port on the valve core cavity; a color paste barrel channel communicated with the color paste barrel is arranged in the valve body, and the color paste barrel channel forms a valve core color paste barrel opening on the valve core cavity; the valve body is also provided with a color paste injection port; set up the case on the case and annotate out the passageway, the case is annotated out the passageway and is arranged in the mill base and annotate export position and annotate out thick liquid, its characterized in that: the valve core is provided with a channel, so that when the valve core injection channel is in a backflow state, one of the port A of the channel A or the port B of the channel B is only communicated with the valve core injection channel, and the valve core injection channel is communicated with the color paste barrel channel; the rest channel A or channel B is directly communicated with the color paste barrel channel through a channel arranged on the valve core; when the valve core injection channel is in the injection state, one of the channel A and the channel B or the channel A and the channel B are communicated with the valve core injection channel.

2. The large pump strong backflow small pump small injection quantity compound pump according to claim 1, characterized in that: the port A of the valve core and the port B of the valve core are positioned on the same circumference of the cavity of the valve core, the number of the injection channels of the valve core is two, namely a port X injection channel and a port Y injection channel, the port X injection channel and the port Y injection channel are communicated with an axis channel arranged on the valve core, when the valve core is positioned in a reflux state, one of the channel A or the channel B is communicated with the axis channel, the axis channel is communicated with the X injection channel and the port Y injection channel, and the port X injection channel and the port Y injection channel are correspondingly communicated with a color paste barrel channel and are collected to a color paste barrel; the rest channel A or channel B is directly led to a color paste barrel channel at the axis part of the bottom end of the valve core cavity through an inclined channel arranged on the valve core and is led into the color paste barrel; when the valve core X injection channel is in an injection state, one of the channel A and the channel B is communicated with the valve core X injection channel through the axis channel; when the valve core Y injection channel is in the injection state, the channel A and the channel B are communicated with the valve core Y injection channel through the axis channel to be injected.

3. The large pump strong backflow small pump small injection quantity compound pump according to claim 2, characterized in that: a large pump inlet and a small pump outlet are arranged in the valve body, a first radial channel, a second radial channel and a third radial channel are arranged on the axis channel of the valve core, a first injection channel and a second injection channel are also arranged at one end of the axis channel of the valve core, the diameter of the first injection channel is smaller than that of the second injection channel, an inclined channel is arranged at the other end of the valve core and is connected with the inlet and the outlet of the color paste barrel, when the pump valve is in an initial state, the axes of the large pump inlet and outlet, the small pump inlet and outlet, the first radial channel, the second radial channel and the third radial channel are located in the same plane, the first radial channel and the third radial channel are coaxially arranged, the first injection channel and the second injection channel are coaxially arranged, the first radial channel and the first injection channel are arranged in parallel, and the axes of the inclined channel, the small pump inlet and outlet and the second radial channel are located in the same plane.