Automatic adjusting three-way valve pump

Abstract

The utility model relates to an automatic adjusting three-way valve pump which comprises a driving assembly, a driving rod and a valve assembly, the driving assembly is connected with the driving rod, the valve assembly comprises a valve seat, a feeding port and a discharging port are formed in the valve seat, a containing cavity, a first channel and a second channel are further arranged in the valve seat, and the first channel is communicated with the containing cavity. The first channel is communicated with the feeding port, the second channel is connected with the discharging port, and the driving assembly can control the driving rod to move towards the direction of the containing cavity; in a first state, the accommodating cavity is communicated with the feeding hole through the first channel; and in the second state, the accommodating cavity is communicated with the discharge hole through the second channel. Compared with a metering pump with a traditional structure, the automatic adjusting three-way valve pump provided by the utility model is more compact in structure, higher in precision and stronger in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of metering pumps, in particular to an automatic regulating three-way valve pump. Background Art

[0002] Metering pumps are also called quantitative pumps or proportional pumps. Metering pumps are special volumetric pumps that can meet various strict process requirements and can adjust the flow rate steplessly to transport liquids (especially corrosive liquids). Metering pumps are a type of fluid conveying machinery, and their outstanding feature is that they can maintain a constant flow rate that is independent of the discharge pressure. Metering pumps can simultaneously complete the functions of conveying, metering and regulating, thereby simplifying the production process. Using multiple metering pumps, several media can be input into the process in accurate proportions for mixing. Due to their own prominence, metering pumps have now been widely used in various industrial fields such as petrochemicals, pharmaceuticals, and food.

[0003] There are many types of metering pumps, mainly including plunger metering pumps, piston metering pumps, diaphragm metering pumps, etc. Taking the plunger pump as an example, its specific structure generally includes a pump body and a one-way valve arranged on the pump body, and at the same time, a one-way valve is arranged at the inlet and outlet of the cylinder head; however, most metering pumps on the market currently using one-way valves not only have a more complex overall structure, but also are not suitable for the future market due to the limitations and singleness of the one-way valve, so it is necessary to improve the existing technology. Utility Model Content

[0004] In order to achieve the purpose of the utility model, the utility model provides an automatically regulating three-way valve pump, including a driving assembly, a driving rod and a valve assembly, the driving assembly is connected to the driving rod, the valve assembly includes a valve seat, the valve seat is provided with a feed port and a discharge port, the valve seat is also provided with a accommodating chamber, a first channel and a second channel, the first channel is connected to the feed port, the second channel is connected to the discharge port, the driving assembly can control the driving rod to move toward the accommodating chamber; in a first state, the accommodating chamber is connected to the feed port through the first channel; in a second state, the accommodating chamber is connected to the discharge port through the second channel.

[0005] Preferably, it also includes a fixed seat and a driving seat, one end of the fixed seat is connected to the valve seat, the other end of the fixed seat is connected to the driving seat, and the driving assembly is arranged on the driving seat; the driving rod includes a plunger, a transmission spindle and a ball screw, one end of the ball screw is connected to the driving assembly and is located in the driving seat, the plunger is connected to the ball screw through the transmission spindle, the plunger is located in the fixed seat, and the transmission spindle is located at the connection between the fixed seat and the driving seat; the driving assembly can control the movement of the ball screw, and drive the transmission spindle to control the plunger to reciprocate in the valve seat.

[0006] Preferably, it also includes a sealing portion sleeved on the outside of the plunger, the sealing portion includes a first sealing seat, a second sealing seat, an intermediate seat and a rear seat which are sequentially connected, the first sealing seat and the second sealing seat are integrally formed, the valve seat is provided with a first sealing groove which is matched and connected with the first sealing seat, and the second sealing seat, the intermediate seat and the rear seat are all located in the fixed seat.

[0007] Preferably, the first sealing seat, the second sealing seat and the fixed seat are all provided with sealing rings.

[0008] Preferably, an observation window is further provided on the fixing seat, and the observation window is arranged between the sealing portion of the fixing seat and the driving seat, and a positioning ring is also provided at the connection between the fixing seat and the driving seat.

[0009] Preferably, the transmission main shaft includes a first transmission part and a second transmission part, the first transmission part is provided with a connecting groove matching and connected to the ball screw, the second transmission part is matched and connected to the plunger, the first transmission part is provided with a transmission block, the second transmission part is provided with a transmission groove matching and connected to the transmission block, and the transmission main shaft also includes a positioning pin, the positioning pin is located in the transmission groove and is matched and connected to the first transmission part and the second transmission part respectively.

[0010] Preferably, the driving seat is further provided with an origin sensor and an origin sensing column which are connected to each other, and the origin sensing column is connected to the bottom of the first transmission part and to the connecting groove.

[0011] Preferably, a guide assembly is also provided on the driving seat, and the guide assembly includes a guide sleeve and a guide shaft. The first transmission part is located in the guide sleeve, and a guide groove matching and connected to the guide shaft is provided on the first transmission part. A guide bearing and a gasket are also provided at the connection between the guide shaft and the guide groove.

[0012] Preferably, sealing rings are provided at the connections between the feed port, the discharge port and the valve seat.

[0013] Preferably, a third channel is further provided in the valve seat, and the third channel is connected to the accommodating chamber. In the first state, when the accommodating chamber is connected to the feed port, the first channel is connected to the third channel; in the second state, when the accommodating chamber is connected to the discharge port, the second channel is connected to the third channel.

[0014] The beneficial effects of the utility model are as follows: the automatic regulating three-way valve pump provided by the utility model, BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other purposes, features and advantages of the present invention will become clearer through a more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the accompanying drawings are not deliberately scaled to the actual size, but the focus is on illustrating the main purpose of the present invention.

[0016] Figure 1 A schematic cross-sectional view of a specific structure of an automatically adjustable three-way valve pump at a first angle provided by an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the specific structure of the automatic regulating three-way valve pump provided in the embodiment of the utility model;

[0018] Figure 3 A cross-sectional schematic diagram of the specific structure of the automatic adjustment three-way valve pump of the second angle provided by the embodiment of the utility model;

[0019] Figure 4 A cross-sectional schematic diagram of the specific structure of the valve assembly provided by the embodiment of the utility model;

[0020] In the figure: 1-valve assembly, 11-third channel, 12-discharge port, 13-feed port, 14-second channel, 15-first channel, 16-accommodating chamber, 2-fixed seat, 21-plunger, 22-sealing ring, 23-sealing seat, 24-middle seat, 25-rear seat, 26-observation window, 3-driving seat, 31-driving assembly, 32-ball screw, 33-first transmission part, 34-second transmission part, 35-locating pin, 36-connecting groove, 37-guide shaft, 38-guide bearing, 4-origin sensing column, 41-origin sensor. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the relevant drawings.

[0022] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention pertains. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] Please refer to Figure 1-4 The utility model provides an automatically regulating three-way valve pump (metering pump) including a driving assembly, a driving rod and a valve assembly (the valve assembly includes a three-way diaphragm valve and a valve seat connected to each other), wherein the driving assembly is connected to the driving rod, and the valve assembly includes a valve seat, on which a feed port and a discharge port are provided, and a accommodating chamber, a first channel and a second channel are also provided in the valve seat, wherein the first channel is connected to the feed port, and the second channel is connected to the discharge port, and the driving assembly can control the driving rod to move toward the accommodating chamber; in a first state, the accommodating chamber is connected to the feed port through the first channel; in a second state, the accommodating chamber is connected to the discharge port through the second channel.

[0025] Please refer to Figure 4 In a preferred embodiment, a third channel is further provided in the valve seat, and the third channel is communicated with the accommodating chamber. In a first state, when the accommodating chamber is communicated with the feed port, the first channel is communicated with the third channel; in a second state, when the accommodating chamber is communicated with the discharge port, the second channel is communicated with the third channel.

[0026] Please refer to Figure 1-4 The automatic regulating three-way valve pump provided by the utility model is in a first state (i.e., the suction state, at which time the three-way diaphragm valve is not energized, i.e., the feed port is open and the discharge port is closed), the accommodating chamber and the feed port are connected, and the driving component controls the driving rod to move toward the driving component in the accommodating chamber. At this time, the fluid is sucked from the feed port through the first channel into the third channel, i.e., the suction process is completed; at this time, a discharge step is performed (i.e., in the second state, at this time, the three-way diaphragm valve is in an energized state, i.e., the feed port is closed and the discharge port is opened), at this time, the driving rod is controlled by the driving component to move in the accommodating chamber toward the valve seat, and the fluid in the third channel is transported to the discharge port for discharge; in this reciprocating cycle, the fluid is sucked and discharged.

[0027] Please refer to Figure 4 In a preferred embodiment, the first channel, the second channel and the third channel are arranged side by side, the third channel is located between the first channel and the second channel, and the first channel and the feed port (i.e., the feed channel connected to the feed port) are perpendicular to each other, and the second channel and the discharge port (i.e., the discharge channel connected to the discharge port) are perpendicular to each other.

[0028] The beneficial effects of the utility model are as follows: the three-way valve structure (i.e. the setting of the first channel, the second channel and the third channel) is adopted, which has a better effect on the suction and discharge of fluid compared with the traditional one-way valve structure, and the overall structure is simpler, more precise and more accurate.

[0029] Please refer to Figure 1-3 In a preferred embodiment, it also includes a fixed seat and a driving seat, one end of the fixed seat is connected to the valve seat, and the other end of the fixed seat is connected to the driving seat, and the driving assembly is arranged on the driving seat; the driving rod includes a plunger, a transmission spindle and a ball screw, one end of the ball screw is connected to the driving assembly and is located in the driving seat, the plunger is connected to the ball screw through the transmission spindle, the plunger is located in the fixed seat, and the transmission spindle is located at the connection between the fixed seat and the driving seat; the driving assembly can control the movement of the ball screw and drive the transmission spindle to control the plunger to reciprocate in the valve seat.

[0030] In this embodiment, the driving rod and the driving assembly are all arranged in the fixing seat and the driving seat, so that the overall footprint of the metering pump is smaller and the structure is more precise.

[0031] Please refer to Figure 1 In a preferred embodiment, it also includes a sealing portion sleeved on the outside of the plunger, the sealing portion includes a first sealing seat, a second sealing seat (the first sealing seat and the second sealing seat are integrally formed), an intermediate seat and a rear seat which are sequentially connected, the first sealing seat and the second sealing seat are integrally formed, the valve seat is provided with a first sealing groove which is matched and connected with the first sealing seat, the second sealing seat, the intermediate seat and the rear seat are all located in the fixed seat; the main function of the sealing portion is to ensure the sealing of the internal cavity of the fixed seat.

[0032] Please refer to Figure 1-3 In a further preferred embodiment, sealing rings are provided on the first sealing seat, the second sealing seat and the fixed seat. The sealing rings are mainly used to ensure the sealing inside the fixed seat, and ensure the stability and sealing of the metering pump while preventing liquid or fluid penetration.

[0033] Please refer to Figure 1-2In a further preferred embodiment, an observation window is also provided on the fixed seat, and the observation window is arranged between the sealing portion of the fixed seat and the driving seat, and a positioning ring is also provided at the connection between the fixed seat and the driving seat; the observation window is used to observe the normal operation of the internal components of the metering pump to ensure that abnormal conditions can be discovered and repaired in time.

[0034] Please refer to Figure 1-3 In a preferred embodiment, the transmission main shaft includes a first transmission part and a second transmission part, the first transmission part is provided with a connection groove matched with the ball screw, the second transmission part is matched with the plunger, the first transmission part is provided with a transmission block, the second transmission part is provided with a transmission groove matched with the transmission block, and the transmission main shaft also includes a positioning pin, the positioning pin is located in the transmission groove and matched with the first transmission part and the second transmission part respectively. Specifically, the ball screw drives the plunger to reciprocate in the accommodating cavity through the first transmission part and the second transmission part, thereby realizing the suction and discharge of the fluid. At the same time, compared with the traditional transmission structure, the transmission effect is better, stable, light and stronger.

[0035] Please refer to Figure 1 In a further preferred embodiment, the driving seat is also provided with an origin sensor and an origin sensing column which are connected to each other, and the origin sensing column is connected to the bottom of the first transmission part and to the connecting groove; the origin sensor is connected to the connecting groove to sense the specific motion trajectory of the ball screw, thereby ensuring that its motion trajectory is accurate and correct, thereby improving the accuracy and stability of the machine.

[0036] In a preferred embodiment, the drive seat also includes an outer cover and a base plate, which are connected to each other and form a cavity inside, and the drive assembly (motor) and the ball screw are both arranged in the cavity formed by the outer cover and the base plate.

[0037] Please refer to Figure 3 In a preferred embodiment, the driving seat is further provided with a guide assembly, the guide assembly includes a guide sleeve and a guide shaft, the first transmission part is located in the guide sleeve, the first transmission part is provided with a guide groove matched with the guide shaft, and the connection between the guide shaft and the guide groove is further provided with a guide bearing and a gasket. The guide shaft is mainly used to ensure the normal reciprocating motion of the ball screw to avoid the deviation of the motion trajectory.

[0038] Please refer to Figure 1-4In a preferred embodiment, sealing rings are provided at the connections between the feed port and the discharge port and the valve seat; specifically, a feed channel and a discharge channel respectively connected to the feed port and the discharge port are provided in the valve seat, and the feed channel and the discharge channel are respectively connected to the first channel and the second channel and are arranged perpendicular to each other, forming an L-shaped channel (feed channel and the first channel or the discharge channel and the second channel) in the cross-section state. By arranging sealing rings at the connections, it is mainly to ensure that the feed port and the discharge port do not penetrate into the metering pump when the fluid is sucked in and discharged, so as to ensure its sealing.

[0039] The beneficial effects of the utility model are as follows: the utility model provides an automatically adjustable three-way valve pump, which, compared with a metering pump of a traditional structure, has a more compact structure, higher precision and stronger stability.

[0040] In this specification, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0042] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An automatic regulating three-way valve pump, characterized in that: It includes a driving component, a driving rod and a valve component, wherein the driving component is connected to the driving rod, and the valve component includes a valve seat, on which a feed port and a discharge port are provided, and the valve seat is also provided with a accommodating chamber, a first channel and a second channel, wherein the first channel is connected to the feed port, and the second channel is connected to the discharge port, and the driving component can control the driving rod to move toward the accommodating chamber; in a first state, the accommodating chamber is connected to the feed port through the first channel; in a second state, the accommodating chamber is connected to the discharge port through the second channel.

2. The automatic regulating three-way valve pump according to claim 1, characterized in that: It also includes a fixed seat and a driving seat, one end of the fixed seat is connected to the valve seat, the other end of the fixed seat is connected to the driving seat, and the driving assembly is arranged on the driving seat; the driving rod includes a plunger, a transmission spindle and a ball screw, one end of the ball screw is connected to the driving assembly and is located in the driving seat, the plunger is connected to the ball screw through the transmission spindle, the plunger is located in the fixed seat, and the transmission spindle is located at the connection between the fixed seat and the driving seat; the driving assembly can control the movement of the ball screw, and drive the transmission spindle to control the plunger to reciprocate in the valve seat.

3. The automatic regulating three-way valve pump according to claim 2, characterized in that: It also includes a sealing portion sleeved on the outside of the plunger, the sealing portion includes a first sealing seat, a second sealing seat, an intermediate seat and a rear seat which are sequentially connected, the first sealing seat and the second sealing seat are integrally formed, the valve seat is provided with a first sealing groove which is matched and connected with the first sealing seat, and the second sealing seat, the intermediate seat and the rear seat are all located in the fixed seat.

4. The automatic regulating three-way valve pump according to claim 3, characterized in that: The first sealing seat, the second sealing seat and the fixed seat are all provided with sealing rings.

5. The automatic regulating three-way valve pump according to claim 2, characterized in that: The fixing seat is also provided with an observation window, which is arranged between the sealing portion of the fixing seat and the driving seat. A positioning ring is also provided at the connection between the fixing seat and the driving seat.

6. The automatic regulating three-way valve pump according to claim 2, characterized in that: The transmission main shaft includes a first transmission part and a second transmission part, the first transmission part is provided with a connecting groove matched with the ball screw, the second transmission part is matched with the plunger, the first transmission part is provided with a transmission block, the second transmission part is provided with a transmission groove matched with the transmission block, and the transmission main shaft also includes a positioning pin, the positioning pin is located in the transmission groove and is matched with the first transmission part and the second transmission part respectively.

7. The automatic regulating three-way valve pump according to claim 6, characterized in that: The driving seat is also provided with an origin sensor and an origin sensing column which are connected to each other. The origin sensing column is connected to the bottom of the first transmission part and to the connecting groove.

8. The automatic regulating three-way valve pump according to claim 6, characterized in that: The driving seat is also provided with a guide assembly, which includes a guide sleeve and a guide shaft. The first transmission part is located in the guide sleeve. The first transmission part is provided with a guide groove that matches and connects with the guide shaft. A guide bearing and a gasket are also provided at the connection between the guide shaft and the guide groove.

9. The automatic regulating three-way valve pump according to claim 1, characterized in that: Sealing rings are provided at the connections between the feed port, the discharge port and the valve seat.

10. The automatic regulating three-way valve pump according to claim 1, characterized in that: A third channel is also provided in the valve seat, and the third channel is communicated with the accommodating chamber. In the first state, when the accommodating chamber is communicated with the feed port, the first channel is communicated with the third channel; in the second state, when the accommodating chamber is communicated with the discharge port, the second channel is communicated with the third channel.

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