Infusion constant flow pump

Abstract

The utility model belongs to the technical field of constant flow pumps, and particularly relates to an infusion constant flow pump which comprises an installation shell and two infusion assemblies, the two infusion assemblies are symmetrically arranged in the installation shell, one end in the installation shell is provided with a power assembly used for driving the infusion assemblies, and the other end in the installation shell is provided with a power assembly used for driving the infusion assemblies. And one end of the infusion assembly is slidably connected with the power assembly, a supporting base used for supporting the infusion assembly is arranged in the middle of the inner side of the mounting shell, and the infusion assembly penetrates through the supporting base. According to the cooling device, the power assembly drives the two liquid conveying assemblies to move to convey liquid, the power assembly drives the cooling assembly to move while driving the liquid conveying assemblies to work, and cooling liquid in the water cooling box is pumped into the water cooling cavity to cool the supporting base and the liquid conveying assemblies; the liquid conveying assembly and the cooling assembly are simultaneously driven to work through one power assembly, a power structure is saved, the production cost is reduced, and meanwhile energy consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of constant flow pumps, and particularly relates to an infusion constant flow pump. Background Technique

[0002] A constant flow pump is a power device for transporting liquids. Constant flow pumps are widely used in various university laboratories, medicine, chemical industry, food, environmental protection, experiments, science education, medical and health fields, etc. Constant flow pumps are precise, durable, with a stable and continuously adjustable flow rate, having relatively high pressure and head, and the transported substances do not come into contact with the outside world to prevent pollution, and can perform various flow rate liquid addition and liquid extraction. There is micro-delivery, and it can also be used for small-scale canning.

[0003] When the constant flow pump is working, the connecting rod of its driving piston will have high-frequency friction with the support seat during operation. After long-term operation, it will cause the temperature of the connecting rod and the support seat to rise, thereby causing fatigue of the components and affecting the service life of the parts. Usually, a cooling system is used to cool it down, but the cooling system is often a separate system, and a new power structure is required to transport the coolant. This not only has a high cost of components during manufacturing, but also consumes more electrical energy during use and is not energy-saving enough. Content of the Utility Model

[0004] The purpose of the utility model is to provide an infusion constant flow pump, which drives the infusion component and the cooling component to work simultaneously through a power component, saves the power structure, reduces the production cost and reduces the energy consumption, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An infusion constant flow pump, including an installation shell and an infusion component. There are two infusion components, and the two infusion components are symmetrically arranged inside the installation shell. One end inside the installation shell is provided with a power component for driving the infusion component. One end of the infusion component is slidably connected to the power component. The middle part inside the installation shell is provided with a support seat for supporting the infusion component. The infusion component penetrates through the support seat. A water cooling cavity is arranged inside the support seat. A water cooling box is arranged inside the installation shell. The middle part of the support seat is provided with a cooling component for driving the coolant inside the water cooling box to circulate in the water cooling cavity. The cooling component is driven by the power component.

[0006] Furthermore, one end of the installation shell is fixedly connected with an installation frame.

[0007] Further, the infusion assembly includes a shaft rod and a pump housing fixedly connected to one end of the mounting frame. A circular plate is fixedly connected to the side wall of the shaft rod. A first spring is sleeved on the side wall of the shaft rod. The first spring is pressed between one end of the circular plate and one end of the inner wall of the mounting housing. A piston head is slidably connected inside the pump housing. One end of the shaft rod is fixedly connected to one end of the piston head.

[0008] Further, first one-way valves are symmetrically arranged on the side wall of the pump housing. A connecting pipe is fixedly connected and communicated between the first one-way valves at the top of the two pump housings.

[0009] Further, the power assembly includes a stepping motor fixedly connected to one side of the inner wall of the mounting housing and a rotating shaft rotatably connected inside the mounting housing. Two corresponding first eccentric wheels are arranged on the rotating shaft. The side walls of the two first eccentric wheels are respectively slidably connected to one end of the two shaft rods. Driving pulleys are fixedly sleeved on the output shaft of the stepping motor and one end of the rotating shaft. The two driving pulleys are connected by a belt in a transmission manner.

[0010] Further, the water cooling cavity includes a piston cavity arranged in the middle of one side of the support seat and two symmetrically arranged cooling cavities. The two cooling cavities are respectively arranged around the two shaft rods. The cooling cavities are communicated with the piston cavity. Water supply cavities are arranged on both sides inside the support seat. The two water supply cavities are respectively communicated with the two cooling cavities. A second one-way valve is embedded at one end of the water supply cavity. A water inlet pipe and a water outlet pipe are respectively arranged on both sides of the water cooling box. The water inlet pipe and the water outlet pipe are respectively communicated with one end of the two second one-way valves.

[0011] Further, the cooling assembly includes a second eccentric wheel fixedly sleeved on the middle of the rotating shaft and a connecting rod. One end of the connecting rod is slidably connected to the side wall of the second eccentric wheel. A hollow piston is slidably connected inside the piston cavity. One end of the hollow piston is fixedly connected to one end of the connecting rod. A second spring is fixedly connected inside the hollow piston. One end of the second spring is fixedly connected to one end of the piston cavity.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The power assembly drives the two infusion assemblies to move for liquid transportation. While driving the infusion assembly to work, the power assembly also drives the cooling assembly to move, pumping the coolant inside the water cooling box into the water cooling cavity to cool down the support seat and the infusion assembly. By driving the infusion assembly and the cooling assembly to work simultaneously with one power assembly, the power structure is saved, and the production cost and energy consumption are reduced while reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0014] Figure 2This is the top view of the present utility model;

[0015] Figure 3 This is the present utility model Figure 2 The sectional view of plane A-A in the present utility model;

[0016] Figure 4 This is the present utility model Figure 2 The sectional view of plane B-B in the present utility model;

[0017] Figure 5 This is the present utility model Figure 2 The sectional view of plane C-C in the present utility model.

[0018] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0019] 1. Installation shell; 11. Installation frame; 2. Infusion assembly; 21. Shaft rod; 22. Circular plate; 23. First spring; 24. Pump shell; 25. Piston head; 26. First one-way valve; 27. Connecting pipe; 3. Power assembly; 31. Stepper motor; 32. Rotating shaft; 33. First eccentric wheel; 34. Belt pulley; 4. Support seat; 5. Cooling assembly; 51. Second eccentric wheel; 52. Connecting rod; 53. Hollow piston; 54. Second spring; 6. Water cooling box; 61. Water inlet pipe; 62. Water outlet pipe; 7. Water cooling cavity; 71. Piston cavity; 72. Cooling cavity; 73. Water supply cavity; 74. Second one-way valve. Specific embodiments

[0020] In order to make the purpose and advantages of the present utility model clearer, the present utility model will be specifically described below in conjunction with embodiments. It should be understood that the following text only describes one or several specific implementation manners of the present utility model, and does not strictly limit the specific protection scope claimed by the present utility model.

[0021] As Figures 1 - 4 shown, an infusion constant flow pump includes an installation shell 1 and an infusion assembly 2. There are two infusion assemblies 2, and the two infusion assemblies 2 are symmetrically arranged inside the installation shell 1. One end inside the installation shell 1 is provided with a power assembly 3 for driving the infusion assembly 2. One end of the infusion assembly 2 is slidably connected to the power assembly 3. The middle part inside the installation shell 1 is provided with a support seat 4 for supporting the infusion assembly 2. The infusion assembly 2 penetrates through the support seat 4. A water cooling cavity 7 is arranged inside the support seat 4. A water cooling box 6 is arranged inside the installation shell 1. The middle part of the support seat 4 is provided with a cooling assembly 5 for driving the coolant inside the water cooling box 6 to circulate in the water cooling cavity 7. The cooling assembly 5 is driven by the power assembly 3. One end of the installation shell 1 is fixedly connected with an installation frame 11.

[0022] According to the above structure, when using this constant-current pump, the power component 3 drives the two liquid infusion components 2 to move for liquid transportation. When the liquid infusion component 2 is working, it rubs against the support base 4. While driving the liquid infusion component 2 to work, the power component 3 drives the cooling component 5 to move, pumps the coolant inside the water-cooling tank 6 into the inside of the water-cooling cavity 7 to cool down the support base 4 and the liquid infusion component 2, thereby preventing the liquid infusion component 2 and the support base 4 from overheating due to friction, causing part fatigue and affecting the service life.

[0023] As Figure 2 and 3 shown, the liquid infusion component 2 includes a shaft rod 21 and a pump housing 24 fixedly connected to one end of the mounting frame 11. A circular plate 22 is fixedly connected to the side wall of the shaft rod 21. A first spring 23 is sleeved on the side wall of the shaft rod 21. The first spring 23 is squeezed between one end of the circular plate 22 and one end of the inner wall of the mounting shell 1. A piston head 25 is slidably connected inside the pump housing 24. One end of the shaft rod 21 is fixedly connected to one end of the piston head 25. First one-way valves 26 are symmetrically arranged on the side wall of the pump housing 24. A connecting pipe 27 is fixedly connected and communicated between the first one-way valves 26 at the tops of the two pump housings 24. The power component 3 includes a stepper motor 31 fixedly connected to one side of the inner wall of the mounting shell 1 and a rotating shaft 32 rotatably connected inside the mounting shell 1. Two corresponding first eccentric wheels 33 are arranged on the rotating shaft 32. The side walls of the two first eccentric wheels 33 are respectively slidably connected to one end of the two shaft rods 21. Belt pulleys 34 are fixedly sleeved on the output shaft of the stepper motor 31 and one end of the rotating shaft 32. The two belt pulleys 34 are connected by a belt in a transmission manner.

[0024] According to the above structure, during use, through the transmission of the belt pulleys 34 and the belt, the stepper motor 31 drives the rotating shaft 32 to rotate, thereby driving the two first eccentric wheels 33 to rotate. The first eccentric wheels 33 and the first spring 23 cooperate to drive the two shaft rods 21 to reciprocate, and then drive the piston head 25 to reciprocate. Liquid is extracted through one of the first one-way valves 26 and discharged through the other first one-way valve 26, thereby achieving the function of transporting liquid. The shaft rod 21 passes through the support base 4 and rubs against the support base 4 during reciprocating motion, resulting in the temperature rise of the side wall of the shaft rod 21 and the support base 4.

[0025] As Figure 4 and 5As shown in the figure, the water-cooling cavity 7 includes a piston cavity 71 provided in the middle of one side of the support base 4 and two symmetrically arranged cooling cavities 72. The two cooling cavities 72 are respectively arranged around the two shaft rods 21. The cooling cavity 72 is communicated with the piston cavity 71. Water supply cavities 73 are arranged on both sides inside the support base 4. The two water supply cavities 73 are respectively communicated with the two cooling cavities 72. A second one-way valve 74 is embedded at one end of the water supply cavity 73. A water inlet pipe 61 and a water outlet pipe 62 are respectively arranged on both sides of the water-cooling box 6. The water inlet pipe 61 and the water outlet pipe 62 are respectively communicated with one end of the two second one-way valves 74. The cooling assembly 5 includes a second eccentric wheel 51 fixedly sleeved on the middle of the rotating shaft 32 and a connecting rod 52. One end of the connecting rod 52 is slidably connected to the side wall of the second eccentric wheel 51. A hollow piston 53 is slidably connected inside the piston cavity 71. One end of the hollow piston 53 is fixedly connected to one end of the connecting rod 52. A second spring 54 is fixedly connected inside the hollow piston 53. One end of the second spring 54 is fixedly connected to one end of the piston cavity 71.

[0026] According to the above structure, while the stepping motor 31 rotates, it drives the second eccentric wheel 51 to rotate. After the second eccentric wheel 51 rotates, it cooperates with the second spring 54 to drive the connecting rod 52 and the hollow piston 53 to reciprocate. When the hollow piston 53 reciprocates, the coolant inside the water-cooling box 6 enters one of the cooling cavities 72 through the water inlet pipe 61 and the corresponding second one-way valve 74, then enters the piston cavity 71, and then enters the other cooling cavity 72, and flows back into the water-cooling box 6 through the other second one-way valve 74 and the water outlet pipe 62, thus forming a circulation of the coolant. The coolant cools the support base 4 and the shaft rod 21, absorbs the heat generated by the friction between the two, avoids fatigue damage of the two, and improves the service life.

[0027] The working principle of the present utility model is as follows: When using this constant flow pump, the power component 3 drives the two infusion components 2 to move for liquid transportation. During the operation of the infusion component 2, friction occurs with the support seat 4. While driving the infusion component 2 to work, the power component 3 also drives the cooling component 5 to move, pumping the coolant inside the water cooling box 6 into the inside of the water cooling cavity 7 to cool down the support seat 4 and the infusion component 2, thereby preventing the infusion component 2 and the support seat 4 from overheating due to friction, causing part fatigue and affecting the service life. During use, through the transmission of the belt pulley 34 and the belt, the stepping motor 31 drives the rotating shaft 32 to rotate, and then drives the two first eccentric wheels 33 to rotate. The first eccentric wheel 33 and the first spring 23 cooperate to drive the two shaft rods 21 to reciprocate, and then drive the piston head 25 to reciprocate. Liquid is extracted through one of the first one-way valves 26 and discharged through the other first one-way valve 26, thereby achieving the function of transporting liquid. The shaft rod 21 passes through the support seat 4 and friction occurs with the support seat 4 during reciprocating motion, resulting in the side wall of the shaft rod 21 and the support seat 4 heating up. While rotating, the stepping motor 31 drives the second eccentric wheel 51 to rotate. After the second eccentric wheel 51 rotates, it cooperates with the second spring 54 to drive the connecting rod 52 and the hollow piston 53 to reciprocate. When the hollow piston 53 reciprocates, the coolant inside the water cooling box 6 enters one of the cooling cavities 72 through the water inlet pipe 61 and the corresponding second one-way valve 74, then enters the piston cavity 71, and then enters the other cooling cavity 72, and flows back into the water cooling box 6 through the other second one-way valve 74 and the water outlet pipe 62, thus forming a circulation of the coolant. The coolant cools down the support seat 4 and the shaft rod 21, absorbs the heat generated by the friction between the two, prevents the two from being fatigued and damaged, and improves the service life.

[0028] The above is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model, unless otherwise specifically stated and limited, are implemented according to the conventional means in the art.

Claims

1. An infusion constant flow pump, comprising a mounting housing (1) and an infusion assembly (2), characterized in that: There are two infusion components (2), and the two infusion components (2) are symmetrically arranged inside the mounting shell (1). A power component (3) for driving the infusion component (2) is arranged at one end inside the mounting shell (1), and one end of the infusion component (2) is slidably connected to the power component (3). A support seat (4) for supporting the infusion component (2) is arranged in the middle of the inner side of the mounting shell (1), and the infusion component (2) passes through the support seat (4). A water cooling cavity (7) is arranged inside the support seat (4). A water cooling box (6) is arranged inside the mounting shell (1), and a cooling component (5) for driving the cooling liquid inside the water cooling box (6) to circulate in the water cooling cavity (7) is arranged in the middle of the support seat (4), and the cooling component (5) is driven by the power component (3).

2. The infusion constant flow pump according to claim 1, characterized in that: One end of the mounting shell (1) is fixedly connected to a mounting frame (11).

3. The infusion constant flow pump according to claim 2, characterized in that: The infusion assembly (2) comprises a shaft (21) and a pump housing (24) fixedly connected to one end of a mounting frame (11); a circular plate (22) is fixedly connected to the side wall of the shaft (21); a first spring (23) is sleeved on the side wall of the shaft (21); the first spring (23) is squeezed and arranged between one end of the circular plate (22) and one end of the inner wall of the mounting housing (1); a piston head (25) is slidably connected to the interior of the pump housing (24); and one end of the shaft (21) is fixedly connected to one end of the piston head (25).

4. The infusion constant flow pump according to claim 3, characterized in that: The side walls of the pump housing (24) are symmetrically provided with first one-way valves (26), and a connecting pipe (27) is fixedly connected between the first one-way valves (26) at the tops of the two pump housings (24).

5. The infusion constant flow pump according to claim 4, characterized in that: The power assembly (3) comprises a stepper motor (31) fixedly connected to one side of the inner wall of the mounting shell (1) and a rotating shaft (32) rotatably connected to the inside of the mounting shell (1); the rotating shaft (32) is provided with two correspondingly arranged first eccentric wheels (33); the side walls of the two first eccentric wheels (33) are respectively slidably connected to one end of the two shafts (21); the output shaft of the stepper motor (31) and one end of the rotating shaft (32) are both fixedly sleeved with pulleys (34); the two pulleys (34) are connected via a belt transmission.

6. The infusion constant flow pump according to claim 5, characterized in that: The water cooling chamber (7) comprises a piston chamber (71) arranged in the middle of one side of the support seat (4) and two symmetrically arranged cooling chambers (72), the two cooling chambers (72) being arranged on the peripheries of the two shafts (21) respectively, the cooling chambers (72) being communicated with the piston chamber (71), water supply chambers (73) being arranged on both sides of the interior of the support seat (4), the two water supply chambers (73) being communicated with the two cooling chambers (72) respectively, a second one-way valve (74) being embedded at one end of the water supply chamber (73), a water inlet pipe (61) and a water outlet pipe (62) being arranged on both sides of the water cooling box (6), the water inlet pipe (61) and the water outlet pipe (62) being communicated with one end of the two second one-way valves (74) respectively.

7. The infusion constant flow pump according to claim 6, characterized in that: The cooling assembly (5) comprises a second eccentric wheel (51) and a connecting rod (52) fixedly mounted on the middle part of the rotating shaft (32); one end of the connecting rod (52) is slidably connected to the side wall of the second eccentric wheel (51); a hollow piston (53) is slidably connected to the interior of the piston chamber (71); one end of the hollow piston (53) is fixedly connected to one end of the connecting rod (52); a second spring (54) is fixedly connected to the interior of the hollow piston (53); one end of the second spring (54) is fixedly connected to one end of the piston chamber (71).

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