Fluid conveying pump

Abstract

The utility model relates to the field of fluid conveying, in particular to a fluid conveying pump. An oil pumping pipe is provided with a primary ink inlet and an ink outlet; the piston cylinder is provided with a liquid discharge channel and a secondary ink inlet; the piston cylinder can slide in the oil pumping pipe in a reciprocating mode. One-way valves are arranged at the first-stage ink inlet and the second-stage ink inlet, and when the piston cylinder reciprocates, ink can be sucked and discharged through negative pressure generated in a suction / extrusion mode; compared with an impeller rotating at a high speed in a comparison file, the discharge amount of the piston cylinder sliding linearly is not affected by the viscosity of printing ink; and the viscosity of the ink does not influence the output quantity of words of the ink pump.

Description

Technical Field

[0001] The utility model relates to the field of fluid delivery, in particular to a fluid delivery pump. Background Art

[0002] Traditional printing equipment is equipped with an ink fountain, and the ink adding operation requires manual use of an ink shovel to add ink into the ink fountain one shovel at a time. This method significantly increases the labor intensity of the operator, and during the operation, the ink shovel is prone to dripping, causing ink contamination on the ground.

[0003] Chinese utility model patent CN2012203282881 discloses a new type of printing ink pump. The ink pump consists of two major components: a pump body and a pneumatic motor, in which the pneumatic motor is responsible for driving the rotation of the impeller in the pump body. In the process of ink delivery, there is a key technical problem: in order to ensure that an efficient negative pressure effect is generated inside the pump body, it is necessary to ensure that the gap between the outer periphery of the impeller and the inner cavity of the pump body is maintained in a relatively small range. However, (defect) due to the relatively small gap between the impeller and the inner wall of the pump housing, when dealing with ink with higher viscosity, the resistance of all blades of the high-speed rotating impeller will increase significantly, thereby adversely affecting the normal flow output of the ink pump; the viscosity of the ink affects the output of the ink pump. Utility Model Content

[0004] The utility model provides a fluid delivery pump, which mainly solves one of the following problems: how to avoid the above-mentioned defects of the existing ink pump.

[0005] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is:

[0006] A fluid delivery pump,

[0007] The ink barrel is a container for holding ink;

[0008] The piston in the ink barrel is used to slide on the inner wall of the ink barrel;

[0009] The inner cavity of the oil extraction pipe is an oil extraction cavity, the lower end of the oil extraction pipe is fixedly connected to the piston in the ink barrel, the lower end of the combination of the oil extraction pipe and the piston in the ink barrel is provided with a primary ink inlet, and the oil extraction pipe is also provided with an ink outlet, and the primary ink inlet and the ink outlet are both connected to the oil cavity;

[0010] The driving rod of the linear motion cylinder extends from the upper end of the oil pumping pipe into the oil pumping cavity of the oil pumping pipe, the linear motion cylinder is fixedly connected to the upper end of the oil pumping pipe and the outer shell of the linear motion cylinder is covered and sealed;

[0011] A cylinder cavity is arranged inside the piston cylinder, a secondary ink inlet is arranged at the lower side of the piston cylinder, and a liquid discharge channel is arranged at the upper end of the piston cylinder; the cylinder cavity, the secondary ink inlet, the liquid discharge channel, and the oil cavity are interconnected;

[0012] Among them, both the primary ink inlet and the secondary ink inlet are provided with a one-way valve, and the conducting direction of the one-way valve is from the primary ink inlet to the ink outlet.

[0013] Furthermore, valve balls are arranged on the upper sides of the primary ink inlet and the secondary ink inlet, and the matching structure of the valve ball, the primary ink inlet and the secondary ink inlet forms a one-way valve.

[0014] Furthermore, a rubber layer is provided at the contact points between the primary ink inlet, the secondary ink inlet and the valve ball, which helps to seal the one-way valve.

[0015] Furthermore, the linear motion cylinder includes an upper end cover, a lower end cover, a pressing valve, a cylinder body, and a pneumatically controlled reversing valve;

[0016] The pneumatic control reversing valve is a two-position five-way reversing valve, which belongs to the prior art, and has a pressure inlet P, an outlet A / B, an exhaust port R / S, and a pneumatic control port KB / KA; when the pneumatic control port KA inputs pressure gas, the pressure inlet P and the outlet A are connected, and the outlet B and the exhaust port S are connected; when the pneumatic control port KB inputs pressure gas, the pressure inlet P and the outlet B are connected, and the outlet A and the exhaust port R are connected;

[0017] The upper end cover, the lower end cover and the two ends of the cylinder body are fixed to each other. The cylinder body has a piston cavity. The cylinder piston slides in the cylinder body. The cylinder piston rod is fixed to the cylinder piston and extends out of the lower end cover.

[0018] There are two pressing valves, namely an upper pressing valve and a lower pressing valve; the upper pressing valve and the lower pressing valve are respectively installed in the upper end cover and the lower end cover, and the pressing heads of the upper pressing valve and the lower pressing valve can be triggered by the cylinder piston;

[0019] The air control port KB and the air outlet A are connected to the lower push valve through air channels s1 and s2; the air control port KA and the air outlet B are connected to the two connecting ports of the upper push valve through air channels s4 and s5; the air outlet A is connected to the rodless chamber of the cylinder through air channel S5; the air outlet B is connected to the rod chamber of the cylinder through air channel S3.

[0020] Further, the air channels S1 / S2 / S3 / S4 / S5 / S6 may be pipelines; or,

[0021] The gas passages S1 / S2 / S3 / S4 / S5 / S6 are passages opened inside the upper end cover, the lower end cover, and the cylinder assembly; or,

[0022] Both ends of the plurality of connection columns are fixedly connected to the upper end cover and the lower end cover, and channels are opened inside the upper end cover, the lower end cover and the plurality of connection column assemblies.

[0023] The beneficial effects of the utility model are:

[0024] The oil extraction pipe is provided with a primary ink inlet and an ink outlet; the piston cylinder is provided with a discharge channel and a secondary ink inlet; the piston cylinder can slide back and forth in the oil extraction pipe; a one-way valve is provided at the primary ink inlet and the secondary ink inlet, and the piston cylinder can utilize the negative pressure generated by the pumping / squeezing method to suck and discharge the ink while reciprocating; the discharge volume of the linearly sliding piston cylinder utilized in the present application is not affected by the viscosity of the ink compared with the high-speed rotating impeller in the comparative document; the viscosity of the ink does not affect the output volume of the ink pump word of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of this application;

[0026] Figure 2 This is a schematic diagram of the structure of the ink barrel 00 applied to the present application;

[0027] Figure 3 It is a structural schematic diagram of a linear motion cylinder 1000;

[0028] Figure 4 This is a gas circuit diagram of this application;

[0029] Figure 5 is a schematic diagram of a press valve 50;

[0030] Reference table of reference numerals:

[0031] Ink bucket 00;

[0032] The oil extraction pipe 60, the oil chamber 61, the primary ink inlet 611, and the ink outlet 612;

[0033] One-way valve 70;

[0034] Piston cylinder 80, cylinder cavity 81, liquid discharge channel 82, secondary ink inlet 83;

[0035] Linear motion cylinder 1000, upper end cover 10, lower end cover 20, pressing valve 50, cylinder body 90, air-controlled reversing valve 100, and piston 120 in ink barrel. DETAILED DESCRIPTION

[0036] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0037] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0038] A fluid delivery pump,

[0039] See also Figure 1 , Figure 2 , ink barrel 00 is a container for containing ink;

[0040] See also Figure 2 The piston 120 in the ink barrel is used to slide on the inner wall of the ink barrel 00.

[0041] The inner cavity of the oil extraction pipe 60 is the oil extraction chamber 61. The lower end of the oil extraction pipe 60 is fixedly connected to the piston 120 in the ink barrel. The lower end of the combination of the oil extraction pipe 60 and the piston 120 in the ink barrel is provided with a first-level ink inlet 611. The oil extraction pipe 60 is also provided with an ink outlet 612. The first-level ink inlet 611 and the ink outlet 612 are both connected to the oil chamber 61.

[0042] The driving rod (piston rod) of the linear motion cylinder 1000 extends from the upper end of the oil extraction pipe 60 into the oil extraction chamber 61 of the oil extraction pipe 60 . The linear motion cylinder 1000 is fixedly connected to the upper end of the oil extraction pipe 60 and the outer shell of the linear motion cylinder 1000 is covered and sealed.

[0043] A cylinder cavity 81 is provided inside the piston cylinder 80, a secondary ink inlet 83 is provided at the lower side of the piston cylinder 80, and a discharge channel 82 is provided at the upper end of the piston cylinder 80; the cylinder cavity 81, the secondary ink inlet 83, the discharge channel 82, and the oil chamber 61 are interconnected.

[0044] The primary ink inlet 611 and the secondary ink inlet 83 are both provided with a one-way valve, and the conducting direction of the one-way valve is from the primary ink inlet 611 to the ink outlet 612 .

[0045] Principle: Reference Figure 2 ① When the piston cylinder 80 moves upward, negative pressure is generated between the piston cylinder 80 and the primary ink inlet 611, and the negative pressure forces the one-way valve at the primary ink inlet 611 to open, and the ink in the ink barrel 00 enters the oil chamber 61 from the primary ink inlet 611. ② When the piston cylinder 80 moves downward, the ink in the oil chamber 61 on the lower side of the piston cylinder 80 forces the one-way valve at the secondary ink inlet 83 to open, and the ink enters the oil chamber 61 at the upper part of the piston cylinder 80 from the secondary ink inlet 83, the cylinder chamber 81, and the discharge channel 82 in sequence. At the same time, when the piston cylinder 80 moves upward, the piston cylinder 80 will discharge the ink at the upper part of the piston cylinder 80 from the ink outlet 612; the discharged ink can be drained to the ink fountain of the printing press through the pipeline.

[0046] To summarize, the oil extraction pipe 60 is provided with a primary ink inlet 611 and an ink outlet 612; the piston cylinder 80 is provided with a discharge channel 82 and a secondary ink inlet 83; the piston cylinder 80 can slide back and forth in the oil extraction pipe 60; both the primary ink inlet 611 and the secondary ink inlet 83 are provided with a one-way valve, and while the piston cylinder 80 moves back and forth, it can utilize the negative pressure generated by the pumping / squeezing method to suck and discharge the ink; the discharge volume of the linearly sliding piston cylinder 80 utilized in the present application is not affected by the viscosity of the ink compared with the high-speed rotating impeller in the comparative document; the viscosity of the ink does not affect the output volume of the ink pump word of the present application.

[0047] In addition, the distance the piston cylinder 80 moves upward and downward determines the amount of ink sucked and discharged. Therefore, by setting the distance the piston cylinder 80 moves upward and downward, the amount of ink discharged by the ink pump in a single time can be quantitatively designed.

[0048] Furthermore, valve balls are disposed on the upper sides of the primary ink inlet 611 and the secondary ink inlet 83 , and the matching structure of the valve ball, the primary ink inlet 611 , and the secondary ink inlet 83 forms a one-way valve.

[0049] Furthermore, there is a rubber layer at the contact points between the primary ink inlet 611, the secondary ink inlet 83 and the valve ball, which helps to seal the one-way valve.

[0050] For further information, see Figure 3 , Figure 4 , the linear motion cylinder 1000 includes an upper end cover 10, a lower end cover 20, a pressing valve 50, a cylinder body 90, and a pneumatic control reversing valve 100;

[0051] The air-controlled reversing valve 100 is a two-position five-way reversing valve, which belongs to the prior art, and has an air pressure inlet P, an air outlet A / B, an exhaust port R / S, and an air control port KB / KA; when KA inputs pressurized gas, the air pressure inlet P and the air outlet A are connected, and the air outlet B and the exhaust port S are connected; when KB inputs pressurized gas, the air pressure inlet P and the air outlet B are connected, and the air outlet A and the exhaust port R are connected.

[0052] The pressing valve 50 is also a prior art, and includes a pressing head 52 and two communicating ports 51 . When the pressing head 52 is pressed, the two communicating ports 51 are connected.

[0053] The upper end cover 10, the lower end cover 20 and the two ends of the cylinder body 90 are fixed to each other, the cylinder body 90 has a piston cavity, the cylinder piston is slidably located in the cylinder body 90, and the cylinder piston rod is fixed to the cylinder piston and extends out of the lower end cover 20. That is, the upper end cover 10, the lower end cover 20 and the cylinder body 90, the cylinder piston, and the cylinder piston rod form a cylinder, which only does not have the two gas ports of the traditional cylinder, that is, the traditional cylinder can be used for transformation.

[0054] The press valve 50 is provided with two, namely an upper press valve 50@10 and a lower press valve 50@20; the upper press valve 50@10 and the lower press valve 50@20 are respectively installed in the upper end cover 10 and the lower end cover 20, and the press heads 52 of the upper press valve 50@10 and the lower press valve 50@20 can be triggered by the cylinder piston; that is, after the cylinder piston squeezes the press heads 52 of the upper press valve 50@10 and the lower press valve 50@20, their two connecting ports 51 are temporarily connected.

[0055] The air control port KB and the air outlet A are connected to the lower press valve 50@20 through the air channels s1 and s2; the air control port KA and the air outlet B are connected to the two connecting ports 51 of the upper press valve 50@10 through the air channels s4 and s5; the air outlet A is connected to the rodless chamber of the cylinder through the air channel S5; the air outlet B is connected to the rod chamber of the cylinder through the air channel S3.

[0056] The linear motion cylinder 1000 can automatically switch between two strokes. Working principle:

[0057] When the cylinder piston rod of the linear motion cylinder 1000 extends, that is, moves downward, it is because the air pressure inlet P, the air outlet A, the air channel S5, and the cylinder rodless chamber are connected, and the pressurized gas enters the cylinder rodless chamber from the air pressure inlet P, the air outlet A, and the air channel S5 in sequence, so that the cylinder piston and the cylinder piston rod move to the side away from the rodless chamber. The cylinder piston triggers the lower pressing valve 50@20 downward, and the two connecting ports 51 of the lower pressing valve 50@20 are connected, and the air pressure inlet P, the air outlet A, S2, the lower pressing valve 50@20, S1, and the air control port KB are connected, and the pressurized gas enters the air control port KB, and the valve core of the air-controlled reversing valve 100 is actuated, and the air pressure inlet P and the air outlet B are connected. The pressurized gas enters the rod cavity through the air outlet B and S3, and the cylinder piston and the cylinder piston rod move upward and return, and the cylinder piston triggers the upper pressing valve 50@10 upward, and the air outlet B, S5, the upper pressing valve 50@10, S4, and KA are connected. The pressurized gas entering KA drives the valve core of the air-controlled reversing valve 100 to reset, that is, the air pressure inlet P and the air outlet A are connected.

[0058] Further, the air channels S1 / S2 / S3 / S4 / S5 / S6 may be pipelines; or,

[0059] The gas passages S1 / S2 / S3 / S4 / S5 / S6 are passages opened inside the upper end cover 10, the lower end cover 20, and the cylinder body 90 assembly; or,

[0060] Both ends of the plurality of connection columns 110 are fixedly connected to the upper end cover 10 and the lower end cover 20 , and a channel is opened inside the upper end cover 10 , the lower end cover 20 and the plurality of connection columns 110 assembly.

[0061] The above description is only a preferred embodiment of the present utility model patent and is not intended to limit the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the protection scope of the present utility model patent.

Claims

1. A fluid delivery pump, characterized in that: The ink barrel (00) is a container for holding ink; The piston (120) in the ink barrel is used to slide on the inner wall of the ink barrel (00); The inner cavity of the oil extraction pipe (60) is an oil extraction chamber (61), the lower end of the oil extraction pipe (60) is fixedly connected to the piston (120) in the ink barrel, the lower end of the combination of the oil extraction pipe (60) and the piston (120) in the ink barrel is provided with a primary ink inlet (611), and the oil extraction pipe (60) is also provided with an ink outlet (612), and the primary ink inlet (611) and the ink outlet (612) are both connected to the oil chamber (61); The driving rod of the linear motion cylinder (1000) extends from the upper end of the oil extraction pipe (60) into the oil extraction chamber (61) of the oil extraction pipe (60), the linear motion cylinder (1000) is fixedly connected to the upper end of the oil extraction pipe (60), and the outer shell of the linear motion cylinder (1000) is covered and sealed; A cylinder cavity (81) is arranged inside the piston cylinder (80), a secondary ink inlet (83) is arranged at the lower side of the piston cylinder (80), and a liquid discharge channel (82) is arranged at the upper end of the piston cylinder (80); the cylinder cavity (81), the secondary ink inlet (83), the liquid discharge channel (82), and the oil cavity (61) are interconnected; Wherein, both the primary ink inlet (611) and the secondary ink inlet (83) are provided with a one-way valve, and the one-way valve is conductive in the direction from the primary ink inlet (611) to the ink outlet (612).

2. A fluid delivery pump according to claim 1, characterized in that: A valve ball is disposed on the upper side of the primary ink inlet (611) and the secondary ink inlet (83), and the matching structure of the valve ball, the primary ink inlet (611) and the secondary ink inlet (83) forms a one-way valve.

3. A fluid delivery pump according to claim 2, characterized in that: A rubber layer is provided at the contact points between the primary ink inlet (611), the secondary ink inlet (83) and the valve ball, which helps to seal the one-way valve.

4. A fluid delivery pump according to claim 1, characterized in that: The linear motion cylinder (1000) comprises an upper end cover (10), a lower end cover (20), a pressing valve (50), a cylinder body (90), and a pneumatic reversing valve (100); The air-controlled reversing valve (100) is a two-position five-way reversing valve, which belongs to the prior art and has an air pressure inlet P, an air outlet A / B, an exhaust port R / S, and an air control port KB / KA; when the air control port KA inputs pressurized gas, the air pressure inlet P and the air outlet A are connected, and the air outlet B and the exhaust port S are connected; when the air control port KB inputs pressurized gas, the air pressure inlet P and the air outlet B are connected, and the air outlet A and the exhaust port R are connected; The upper end cover (10), the lower end cover (20) and the two ends of the cylinder body (90) are fixed to each other, a piston cavity is provided in the cylinder body (90), the cylinder piston is slidably located in the cylinder body (90), and the cylinder piston rod is fixed to the cylinder piston and extends out of the lower end cover (20); A total of two pressing valves (50) are provided, namely an upper pressing valve and a lower pressing valve; the upper pressing valve and the lower pressing valve are respectively installed in the upper end cover (10) and the lower end cover (20), and the pressing heads (52) of the upper pressing valve and the lower pressing valve can be triggered by the cylinder piston; The air control port KB and the air outlet A are connected to the lower pressing valve through air channels s1 and s2; the air control port KA and the air outlet B are connected to the two connecting ports (51) of the upper pressing valve through air channels s4 and s5; the air outlet A is connected to the rodless cavity of the cylinder through air channel S5; and the air outlet B is connected to the rod cavity of the cylinder through air channel S3.

5. A fluid delivery pump according to claim 1, characterized in that: The air channels S1 / S2 / S3 / S4 / S5 / S6 may be pipelines; or, The gas passages S1 / S2 / S3 / S4 / S5 / S6 are passages opened inside the upper end cover (10), the lower end cover (20), and the cylinder body (90) assembly; or, The two ends of the plurality of connection columns (110) are fixedly connected to the upper end cover (10) and the lower end cover (20), and a channel is provided inside the assembly of the upper end cover (10), the lower end cover (20) and the plurality of connection columns (110).

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