阅读说明：本技术 一种双缸流量泵 (Double-cylinder flow pump ) 是由 钟俊超 于 2019-12-07 设计创作，主要内容包括：本发明创造提出了一种双缸流量泵,包括电机、运动机构、单向阀和流体管道,其特征在于,所述运动机构具有流量泵座,在流量泵座上相对设置的第一缸体和第二缸体,以及位于第一缸体和第二缸体之间的曲轴,所述第一缸体内位于内侧即靠近曲轴一侧的第二活塞通过第一曲柄与曲轴直接连接,所述第一缸体内位于外侧即远离曲轴一侧的第一活塞通过第一传动组件与曲轴间接连接；所述第二缸体内位于内侧即靠近曲轴一侧的第三活塞通过第二曲柄与曲轴直接连接,所述第二缸体内位于外侧即远离曲轴一侧的第四活塞通过第二传动组件与曲轴间接连接。解决了现有技术中泄漏率高,控制不准确、也不稳定、甚至成本高的问题。(The invention has created and proposed a kind of double-cylinder flow pump, including electrical machinery, kinematic mechanism, check valve and fluid pipeline, characterized by that, the said kinematic mechanism has flow pump base, first cylinder block and second cylinder block that relatively set up on the flow pump base, and crankshaft located between first cylinder block and second cylinder block, the second piston located in inboard namely close to crankshaft in the said first cylinder block is connected with crankshaft directly through the first crank, the first piston located in the outboard namely far away from crankshaft in the said first cylinder block is connected with crankshaft indirectly through the first drive assembly; and a third piston positioned on the inner side of the second cylinder body, namely close to one side of the crankshaft, is directly connected with the crankshaft through a second crank, and a fourth piston positioned on the outer side of the second cylinder body, namely far away from one side of the crankshaft, is indirectly connected with the crankshaft through a second transmission assembly. The problems of high leakage rate, inaccurate and unstable control and even high cost in the prior art are solved.)

1. A double-cylinder flow pump comprises a motor, a movement mechanism, a one-way valve and a fluid pipeline, and is characterized in that the movement mechanism is provided with a flow pump seat, a first cylinder body and a second cylinder body which are oppositely arranged on the flow pump seat, and a crankshaft positioned between the first cylinder body and the second cylinder body, a second piston positioned on the inner side, namely one side close to the crankshaft in the first cylinder body is directly connected with the crankshaft through a first crank, and a first piston positioned on the outer side, namely one side far away from the crankshaft in the first cylinder body is indirectly connected with the crankshaft through a first transmission assembly; and a third piston positioned on the inner side of the second cylinder body, namely close to one side of the crankshaft, is directly connected with the crankshaft through a second crank, and a fourth piston positioned on the outer side of the second cylinder body, namely far away from one side of the crankshaft, is indirectly connected with the crankshaft through a second transmission assembly.

2. The dual cylinder flow pump as defined in claim 1 wherein said first drive assembly includes a third crank, a first swing arm and a fourth crank, one end of said third crank being connected to said first piston, the other end of said third crank being connected to one end of said fourth crank through said first swing arm, the other end of said fourth crank being connected to said crankshaft, said first swing arm being connected to said flow pump mount.

3. The dual cylinder flow pump as defined in claim 1 wherein said second drive assembly includes a fifth crank, a second swing arm and a sixth crank, one end of said fifth crank is connected to said fourth piston, the other end of said fifth crank is connected to one end of said sixth crank through said second swing arm, the other end of said sixth crank is connected to said crankshaft, and said second swing arm is connected to said flow pump mount.

4. The twin cylinder flow pump of claim 1, wherein said crankshaft drives said first piston and said second piston within said first cylinder to move with a phase difference of 20-45 degrees; when the crankshaft drives, a phase difference of 20-45 degrees exists between the third piston and the fourth piston in the second cylinder body in motion, and the phase difference is used for improving the linearity of output liquid flow.

5. The dual cylinder flow pump as recited in claim 1 wherein a seal ring and a wear ring are disposed over each of said first piston and said second piston in said first cylinder; and a third piston and a fourth piston in the second cylinder body are both sleeved with a sealing ring and a wear-resisting ring.

6. The twin cylinder flow pump of claim 1 in which said fluid line is provided with a relief valve to prevent overload breakage of the drive crank in the event of a line occlusion.

7. The dual cylinder flow pump as defined in claim 1 wherein the fluid inlet communicates with the first cylinder through a first inlet line, said first inlet line having a one-way valve for inlet of fluid; the liquid water inlet is communicated with the second cylinder body through a second water inlet pipeline, and a water inlet one-way valve is arranged on the second water inlet pipeline;

the liquid water outlet is communicated with the first cylinder body through a first drainage pipeline, and a drainage one-way valve is arranged on the first drainage pipeline; the cooling water delivery outlet is communicated with the second cylinder body through a second water drainage pipeline, and a water drainage one-way valve is arranged on the second water drainage pipeline.

Technical Field

The invention relates to the field of plunger pumps, in particular to a double-cylinder flow pump.

Background

The water cooling equipment for additive manufacturing needs to control the flow of cooling water, so that the heat exchange effect is stable and controllable, and the quantification and solidification of cooling process parameters in the production process are realized. The existing plunger pump products are mainly applied to occasions with high pressure and high viscosity, and have the problem of high leakage rate when being applied to pure water and other low-viscosity liquids, if open-loop control is used, accurate and stable liquid flow cannot be output, and a closed-loop feedback system needs to be added when closed-loop control is used, so that a large amount of cost is increased, and the plunger pump products are not suitable for general flow control application occasions. And the pure water has no lubrication effect on the metal cylinder body, so that the corrosion and the abrasion can occur in the use process, and the service life of the system can be seriously influenced.

Summary of the invention

Aiming at the defects of the prior art, the invention provides a double-cylinder flow pump, which solves the problems of high leakage rate, inaccurate and unstable control and even high cost in the prior art.

The technical scheme of the invention is realized as follows:

a double-cylinder flow pump comprises a motor, a movement mechanism, a one-way valve and a fluid pipeline, wherein the movement mechanism is provided with a flow pump seat, a first cylinder body and a second cylinder body which are oppositely arranged on the flow pump seat, and a crankshaft positioned between the first cylinder body and the second cylinder body, a second piston positioned on the inner side, namely close to one side of the crankshaft, in the first cylinder body is directly connected with the crankshaft through a first crank, and a first piston positioned on the outer side, namely far away from one side of the crankshaft, in the first cylinder body is indirectly connected with the crankshaft through a first transmission assembly; and a third piston positioned on the inner side of the second cylinder body, namely close to one side of the crankshaft, is directly connected with the crankshaft through a second crank, and a fourth piston positioned on the outer side of the second cylinder body, namely far away from one side of the crankshaft, is indirectly connected with the crankshaft through a second transmission assembly.

The double-cylinder flow pump is characterized in that the first transmission assembly comprises a third crank, a first swing arm and a fourth crank, one end of the third crank is connected with the first piston, the other end of the third crank is connected with one end of the fourth crank through the first swing arm, the other end of the fourth crank is connected to the crankshaft, and the first swing arm is connected to the flow pump base.

The double-cylinder flow pump is characterized in that the second transmission assembly comprises a fifth crank, a second swing arm and a sixth crank, one end of the fifth crank is connected with the fourth piston, the other end of the fifth crank is connected with one end of the sixth crank through the second swing arm, the other end of the sixth crank is connected to the crankshaft, and the second swing arm is connected to the flow pump base.

When the crankshaft drives the double-cylinder flow pump, a phase difference of 20-45 degrees exists between the movement of the first piston and the movement of the second piston in the first cylinder body; when the crankshaft drives, a phase difference of 20-45 degrees exists between the third piston and the fourth piston in the second cylinder body in motion, and the phase difference is used for improving the linearity of output liquid flow.

The double-cylinder flow pump is characterized in that a first piston and a second piston in a first cylinder body are both sleeved with a sealing ring and a wear-resisting ring; and a third piston and a fourth piston in the second cylinder body are both sleeved with a sealing ring and a wear-resisting ring.

The double-cylinder flow pump is characterized in that the fluid pipeline is provided with a safety valve for preventing the driving crank from being broken due to overload when the pipeline is blocked.

In the double-cylinder flow pump, a liquid water inlet is communicated with a first cylinder body through a first water inlet pipeline, and a water inlet one-way valve is arranged on the first water inlet pipeline; the liquid water inlet is communicated with the second cylinder body through a second water inlet pipeline, and a water inlet one-way valve is arranged on the second water inlet pipeline;

the liquid water outlet is communicated with the first cylinder body through a first drainage pipeline, and a drainage one-way valve is arranged on the first drainage pipeline; the cooling water delivery outlet is communicated with the second cylinder body through a second water drainage pipeline, and a water drainage one-way valve is arranged on the second water drainage pipeline.

The invention has the following beneficial effects:

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of a dual cylinder flow pump according to the present invention;

fig. 2 is a schematic structural view of a double-cylinder flow pump according to the present invention.

The attached drawings are as follows: 1, a flow pump seat; 2 a first cylinder; 3 a second cylinder; 4, a crankshaft; 5 a first piston; 6 a second piston; 7 a third piston; 8 a fourth piston; 9 a first crank; 10 a second crank; 11 a first transmission assembly; 12 a second transmission assembly; 13 a third crank; 14 a fourth crank; 15 a first swing arm; 16 a fifth crank; 17 a sixth crank; 18 a second swing arm; 19 a safety valve; 20 water inlet one-way valve; 21 drain check valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention, are within the scope of the present invention.

A two-cylinder flow pump as shown in fig. 1-2 comprises a moving mechanism, a one-way valve, a fluid conduit and an electric motor for driving a crankshaft 4 in rotation. The movement mechanism as shown in fig. 1 has a flow pump base 1, a first cylinder 2 and a second cylinder 3 which are oppositely arranged on the flow pump base, and a crankshaft 4 which is positioned between the first cylinder 2 and the second cylinder 3, wherein a second piston 6 which is positioned at the inner side (namely, the side close to the crankshaft 4) in the first cylinder 2 is directly connected with the crankshaft 4 through a first crank, and a first piston 5 which is positioned at the outer side (namely, the side far away from the crankshaft 4) in the first cylinder 2 is indirectly connected with the crankshaft 4 through a first transmission assembly 11; the third piston located at the inner side (i.e. the side close to the crankshaft 4) in the second cylinder block 2 is directly connected with the crankshaft 4 through a second crank, and the fourth piston 8 located at the outer side (i.e. the side far from the crankshaft 4) in the second cylinder block 2 is indirectly connected with the crankshaft 4 through a second transmission assembly 12. Preferably, a sealing ring and a wear-resisting ring are sleeved on the first piston 5 and the second piston 6 in the first cylinder 2; and a third piston 7 and a fourth piston 8 in the second cylinder body 3 are both sleeved with a sealing ring and a wear-resisting ring.

As shown in fig. 2, the first transmission assembly 11 includes a third crank 13, a first swing arm 15 and a fourth crank 14, one end of the third crank 13 is connected to the first piston 5, the other end of the third crank 13 is connected to one end of the fourth crank 14 through the first swing arm 15, the other end of the fourth crank 14 is connected to the crankshaft 4, and the first swing arm 15 is connected to the flow pump mount 1.

The second transmission assembly 12 comprises a fifth crank 16, a second swing arm 18 and a sixth crank 17, one end of the fifth crank 16 is connected with the fourth piston 8, the other end of the fifth crank 16 is connected with one end of the sixth crank 17 through the second swing arm 18, the other end of the sixth crank 17 is connected to the crankshaft 4, and the second swing arm 18 is connected to the flow pump base 1.

When the motor drives the crankshaft 4 to rotate, a phase difference of 20-45 degrees exists between the movement of the first piston 5 and the movement of the second piston 6 in the first cylinder body 2; when the motor drives the crankshaft 4 to rotate, a phase difference of 20-45 degrees exists between the third piston 7 and the fourth piston 8 in the second cylinder 3, and the phase difference is used for improving the linearity of the output liquid flow.

A water inlet of liquid (the liquid is cooling water) is communicated with the first cylinder body 2 through a first water inlet pipeline, and a water inlet one-way valve 20 is arranged on the first water inlet pipeline; a water inlet of liquid (the liquid is cooling water) is communicated with the second cylinder body 3 through a second water inlet pipeline, and a water inlet one-way valve 20 is arranged on the second water inlet pipeline; a water outlet of liquid (the liquid is cooling water) is communicated with the first cylinder body 2 through a first drainage pipeline, and a drainage one-way valve 21 is arranged on the first drainage pipeline; a water outlet of the liquid (the liquid is cooling water) is communicated with the second cylinder body 3 through a second water drainage pipeline, and a water drainage one-way valve 21 is arranged on the second water drainage pipeline. The fluid line is provided with a safety valve 19 for preventing overload breakage of the drive crank when the line is occluded.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship as shown in the drawings, which are used for convenience in describing the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.

Furthermore, the terms "first", "second", "element i", "element ii" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features indicated. Thus, features defined as "first", "second", "element i", "element ii" may explicitly or implicitly include one or more of such features. In the description of the invention, "plurality" or "a plurality" means two or more unless specifically limited otherwise.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.