High-speed liquid injection pump

Abstract

The high-speed liquid injection pump comprises a pump body and a partition component, an inner cavity is formed in the pump body, the partition component is located in the inner cavity, the partition component divides the inner cavity into a liquid storage cavity and a sealing cavity, the pump body is provided with a first liquid inlet flow channel and a first liquid outlet flow channel which communicate with the liquid storage cavity, and the first liquid inlet flow channel and the first liquid outlet flow channel communicate with the sealing cavity. The pump body is provided with a second liquid inlet flow channel and a second liquid outlet flow channel which are connected with the sealing cavity, the partition component can move in the inner cavity to compress and expand the sealing cavity, the high-speed liquid injection pump can enable liquid to flow out smoothly, the problems of high precision, high stability and high efficiency of large-flow filling / liquid injection are solved, and the high-speed liquid injection pump is suitable for large-flow filling and liquid injection. The problems that a conventional liquid injection pump is long in large-flow filling time and unstable in liquid injection amount are solved, the liquid injection stability is high, and energy loss and resistance are reduced. The product filling time is shortened, the filling amount precision is improved, the flow is increased, pulsation is reduced, and the cost is reduced.

Description

Technical Field

[0001] The present application is applied to the technical field of liquid injection pumps, and in particular relates to a high-speed liquid injection pump. Background Art

[0002] With the continuous advancement of technology and the increasing demand for applications, the rapid development of large-flow filling industries such as the new energy industry, the demand for filling volume of products is increasing, and the filling efficiency needs to be increased by 3-5 times. It is urgent to develop a high-speed pump. The application range of high-speed pumps is very wide, for example, in the fields of petroleum, chemical, pharmaceutical, food, energy, etc. In the petroleum industry, high-speed pumps are used to transport crude oil, oil products and chemical agents; in the chemical industry, high-speed pumps are used to transport various corrosive liquids; in the pharmaceutical and food industries, high-speed pumps are used to transport various liquid raw materials and additives; in the energy field, high-speed pumps are used to transport fuels and lubricants. At present, the mainstream metering pumps are mainly single-stroke plungers. This type of liquid injection pump needs to spend half of the time on liquid preparation during the injection process, and the volume is large, which is not suitable for occasions with large injection volume requirements. Other types of metering pumps have poor accuracy, small flow, low intelligence, small adjustable injection range, difficult to adjust flow, and unstable, simple flow channel and other factors, can not achieve stable high-speed injection, and the injection efficiency is low and the injection stability is poor. Utility Model Content

[0003] The purpose of the present application is to solve at least one of the technical problems existing in the prior art and to provide a high-speed injection pump with high injection efficiency and stable and reliable performance.

[0004] The technical solution adopted by this application to solve its technical problem is:

[0005] A high-speed liquid injection pump comprises a pump body and a partition component, wherein an inner cavity is provided in the pump body, and the partition component is located in the inner cavity. The partition component divides the inner cavity into a first liquid storage cavity and a second liquid storage cavity. The pump body is provided with a first liquid inlet channel and a first liquid outlet channel connected to the liquid storage cavity, and the pump body is provided with a second liquid inlet channel and a second liquid outlet channel connected to the sealed cavity. The partition component can move in the inner cavity to compress and expand the sealed cavity.

[0006] In certain embodiments of the present application, a piston rod is provided in the pump body, the piston rod is connected to the center position of the partition component, the piston rod is arranged along the length direction of the pump body, and the piston rod can drive the partition component to move along the length direction of the pump body.

[0007] In certain embodiments of the present application, a moving component capable of driving the piston rod to reciprocate along the length direction of the pump body is provided in the pump body, and a floating joint is provided between the moving component and the end of the piston rod.

[0008] In certain embodiments of the present application, a screw rod is provided in the pump body, an internal thread cooperating with the screw rod is provided on the moving component, and the screw rod, the moving component and the piston rod are coaxially arranged.

[0009] In certain embodiments of the present application, a linear guide rail is provided in the pump body, and a slide seat cooperating with the linear guide rail is provided on the moving component.

[0010] In certain embodiments of the present application, the pump body is provided with a motor capable of driving the screw to rotate axially, the piston rod, the screw, the moving part, and the motor are arranged in sequence along the length direction of the pump body, and a screw fixing seat is provided in the pump body, and the screw fixing seat is located between the slide seat and the motor.

[0011] In some embodiments of the present application, a coupling is provided between the driving shaft of the motor and the screw rod.

[0012] In certain embodiments of the present application, the partition component includes a sealing ring and a liquid separation block arranged along the cross section of the pump body, the sealing ring is sleeved on the outer circumference of the liquid separation block, and the outer circumference of the sealing ring abuts against the inner wall of the pump body.

[0013] In some embodiments of the present application, a confluence block is provided on the pump body, and the first liquid inlet channel, the second liquid inlet channel, the first liquid outlet channel and the second liquid outlet channel are all provided on the confluence block, the first liquid inlet channel and the second liquid inlet channel converge into a liquid inlet, the first liquid outlet channel and the second liquid outlet channel converge into a liquid outlet, and the liquid inlet and the liquid outlet are relatively arranged on both sides of the confluence block.

[0014] In certain embodiments of the present application, a first liquid inlet check valve is provided in the first liquid inlet channel, a second liquid inlet check valve is provided in the second liquid inlet channel, a first liquid outlet check valve is provided in the first liquid outlet channel, and a second liquid outlet check valve is provided in the second liquid outlet channel. The first liquid inlet check valve, the second liquid inlet check valve, the first liquid outlet check valve and the second liquid outlet check valve are all installed on the manifold block, and a pressure plate is provided on the manifold block.

[0015] One of the above technical solutions has at least one of the following advantages or beneficial effects: the partition component of the high-speed liquid injection pump divides the inner cavity into a liquid storage cavity and a sealing cavity. When absorbing liquid, the partition component moves toward the liquid storage cavity, the volume of the sealing cavity increases (is expanded), and a negative pressure is formed in the sealing cavity. At this time, the second liquid inlet channel is opened, and the liquid is sucked into the sealing cavity. When the partition component moves toward the sealing cavity, the volume of the liquid storage cavity increases, forming a negative pressure, and the first liquid inlet channel is opened, and the liquid is sucked into the liquid storage cavity; when liquid discharge is required, the partition component moves toward the liquid storage cavity, the pressure of the liquid storage cavity rises, the first liquid outlet channel is opened, and the liquid in the liquid storage cavity is discharged, the partition component moves toward the sealing cavity, the pressure of the sealing cavity rises, the second liquid outlet channel is opened, and the liquid in the sealing cavity is discharged. The high-speed liquid injection pump can make the liquid flow out smoothly, solve the problems of high precision, high stability and high efficiency of large-flow filling / injection, improve the problems of long filling time and unstable injection volume of conventional liquid injection pumps for large-flow filling, high injection stability, and reduced energy loss and resistance. Reduce product filling time, improve filling volume accuracy, increase flow rate, reduce pulsation and reduce costs.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a transverse cross-sectional view of an embodiment of the present application;

[0019] Figure 2 It is a structural schematic diagram of an embodiment of the present application;

[0020] Figure 3 It is a left side view of an embodiment of the present application;

[0021] Figure 4 is a three-dimensional diagram of an embodiment of the present application;

[0022] Figure 5 It is a longitudinal cross-sectional view of an embodiment of the present application. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0024] In the present application, if there is a description of directions (up, down, left, right, front and back), it is only for the convenience of describing the technical solution of the present application, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0025] In this application, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of this application, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In this application, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected, detachably connected, or integrally formed; they can be mechanically connected, electrically connected, or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in this application in combination with the specific content of the technical solution.

[0027] in, Figure 1 The reference direction coordinate system of the embodiment of the present application is given. Figure 1 The embodiment of the present application is described with reference to the direction shown.

[0028] The embodiment of the present application provides a high-speed injection pump, see Figure 1 and Figure 2The pump body 100 includes a pump body 100 and a partition member 200. The pump body 100 is provided with an inner cavity 110. The partition member 200 is located in the inner cavity 110. The partition member 200 divides the inner cavity 110 into a liquid storage cavity 111 and a sealing cavity 112. The pump body 100 is provided with a first liquid inlet flow channel 121 and a first liquid outlet flow channel 131 connected to the liquid storage cavity 111. The pump body 100 is provided with a second liquid inlet flow channel 122 and a second liquid outlet flow channel 132 connected to the sealing cavity 112. The partition member 200 can move in the inner cavity 110 to compress and expand the sealing cavity 112. The partition component 200 of the high-speed injection pump divides the inner cavity 110 into a liquid storage cavity 111 and a sealed cavity 112. When the partition component 200 moves, the volume change of the liquid storage cavity 111 and the sealed cavity 112 is the same under any circumstances, so the amount of injection can be accurately controlled by the total stroke of the partition component 200. When aspirating liquid, the partition component 200 moves toward the liquid storage cavity 111, the volume of the sealed cavity 112 increases (is expanded), and a negative pressure is formed in the sealed cavity 112. At this time, the second liquid inlet channel 122 is opened. The liquid is sucked into the sealed cavity 112. When the partition component 200 moves toward the sealed cavity 112, the volume of the liquid storage cavity 111 increases, forming a negative pressure, opening the first liquid inlet channel 121, and the liquid is sucked into the liquid storage cavity 111. When liquid discharge is required, the partition component 200 moves toward the liquid storage cavity 111, the pressure of the liquid storage cavity 11 rises, opening the first liquid outlet channel 131, and the liquid in the liquid storage cavity 11 is discharged. The partition component 200 moves toward the sealed cavity 112, the pressure of the sealed cavity 112 rises, opening the second liquid outlet channel 132, and the liquid in the sealed cavity 112 is discharged. The high-speed injection pump realizes a dual-channel structure by setting a liquid storage chamber 111 and a sealing chamber 112, so that the liquid passing through the first liquid inlet channel 121 and the second liquid inlet channel 122 can flow out smoothly along the flow trend of the channel structure, and will not be blocked by the pump body to rebound and flow back, thereby affecting the flow direction of the liquid, improving the water flow state of the injection pump, solving the problems of high-precision, high-stability and high-efficiency filling / injection of large flow, improving the problems of long filling time and unstable injection volume of conventional injection pumps, and having high injection stability, reducing energy loss and resistance. It reduces product filling time, improves injection volume accuracy, increases flow, reduces pulsation, and reduces costs.

[0029] See also Figure 1 A piston rod 140 is provided in the pump body 100. The piston rod 140 is connected to the center of the partition component 200. The piston rod 140 is arranged along the length direction of the pump body 100. The piston rod 140 can drive the partition component 200 to move along the length direction of the pump body 100. The piston rod 140 is made of ceramic material.

[0030] See also Figure 1A moving component 150 capable of driving the piston rod 140 to reciprocate along the length direction of the pump body 100 is provided in the pump body 100 , and a floating joint 141 is provided between the moving component 150 and the end of the piston rod 140 .

[0031] See also Figure 1 A screw rod 160 is provided in the pump body 100 , and an internal thread matching with the screw rod 160 is provided on the moving component 150 . The screw rod 160 , the moving component 150 and the piston rod 140 are coaxially arranged.

[0032] See also Figure 1 A linear guide rail 170 is provided in the pump body 100 , and a slide seat 151 cooperating with the linear guide rail 170 is provided on the moving component 150 .

[0033] See also Figure 1 The pump body 100 is provided with a motor 300 capable of driving the screw rod 160 to rotate axially. The piston rod 140, the screw rod 160, the moving component 150, and the motor 300 are arranged in sequence along the length direction of the pump body 100. A screw rod fixing seat 180 is provided in the pump body 100. The screw rod 160 fixing seat is located between the slide seat 151 and the motor 300. When the high-speed liquid injection pump is working, the motor 300 drives the screw rod 160 to rotate, so that the ceramic piston rod 140 connected to the screw rod 160 reciprocates in the ceramic cavity.

[0034] As a preferred embodiment of the present application, a coupling 161 is provided between the driving shaft of the motor 300 and the screw rod 160 .

[0035] See also Figure 1 The partition component 200 includes a sealing ring 220 and a liquid separation block 210 arranged along the cross section of the pump body 100. The sealing ring 220 is sleeved on the outer periphery of the liquid separation block 210. The outer periphery of the sealing ring 220 abuts against the inner wall of the pump body 100. The sealing ring 220 is a D-shaped ring.

[0036] See also Figure 1 The pump body 100 is provided with a manifold 400, and the first liquid inlet flow channel 121, the second liquid inlet flow channel 122, the first liquid outlet flow channel 131 and the second liquid outlet flow channel 132 are all provided on the manifold 400, see Figure 3 , Figure 4 and Figure 5The first liquid inlet channel 121 and the second liquid inlet channel 122 converge into a liquid inlet 120, the first liquid outlet channel 131 and the second liquid outlet channel 132 converge into a liquid outlet 130, the liquid inlet 120 and the liquid outlet 130 are relatively arranged on both sides of the confluence block 400, and the high-speed injection pump adopts a double-stroke (two liquid inlet check valves 121 and two liquid outlet check valves 131), double-channel (two liquid inlet channels 120 and two liquid outlet channels 130), and double-volume chamber (liquid storage chamber 111 and sealing chamber 112) structure, which can enable the liquid to flow out smoothly along the flow trend of the channel structure.

[0037] See also Figure 5 The first liquid inlet check valve 123 is provided in the first liquid inlet flow channel 121, the second liquid inlet check valve 124 is provided in the second liquid inlet flow channel 122, the first liquid outlet check valve 133 is provided in the first liquid outlet flow channel 131, and the second liquid outlet check valve 134 is provided in the second liquid outlet flow channel 132. The first liquid inlet check valve 123, the second liquid inlet check valve 124, the first liquid outlet check valve 133 and the second liquid outlet check valve 134 are all installed on the manifold 400. By controlling the first liquid inlet check valve 1 23. The opening and closing of the second liquid inlet one-way valve 124, the first liquid outlet one-way valve 133 and the second liquid outlet one-way valve 134 are used to control the connection and closing of the first liquid inlet channel 121, the second liquid inlet channel 122, the first liquid inlet one-way valve 123 and the second liquid inlet one-way valve 124. The manifold block 400 is provided with a pressure plate for fixing the first liquid inlet one-way valve 123, the second liquid inlet one-way valve 124, the first liquid outlet one-way valve 133 and the second liquid outlet one-way valve 134 to achieve fixing and sealing.

[0038] The internal flow path curves of the first liquid inlet check valve 123, the second liquid inlet check valve 124, the first liquid outlet check valve 133 and the second liquid outlet check valve 134 are smooth and fluent, which reduces the resistance of the liquid when it flows through. As a preferred embodiment of the present application, a guide component is provided in the valve body 100. In order to reduce the resistance of the fluid in the check valve and make the fluid flow smoothly, the guide component should be designed at the center of the check valve. The valve body 100 adopts an integrated design, with a guide component and 4 sets of liquid flow channels ( The first liquid inlet channel 121, the second liquid inlet channel 122, the first liquid outlet channel 131, the second liquid outlet channel 132, the first liquid inlet one-way valve 123), the guide component cooperates with the guide to prevent the one-way valve (the first liquid inlet one-way valve 123, the second liquid inlet one-way valve 124, the first liquid outlet one-way valve 133, the second liquid outlet one-way valve 134, the first liquid inlet one-way valve 123), the function of the 4 groups of liquid channels is to make the fluid flow smoothly, reduce the resistance when the liquid flows through, and reduce noise.

[0039] Specifically, the shaft necks at both ends of the partition component 200 of the high-speed injection pump are the same, so the volume change of the liquid storage chamber 111 and the sealing chamber 112 is the same under any circumstances, so the injection amount can be accurately controlled by the total stroke of the motor. The high-speed injection pump can improve the efficiency and performance of the injection pump, solve the problems of high-flow filling / injection with high precision, high stability and high efficiency; solve the problem of long filling time and unstable injection volume of conventional injection pumps with large flow rates; and adopt a dual-channel (multi-channel) structure to allow the liquid to flow smoothly, improve the injection stability of the pump, reduce energy loss and resistance, reduce noise, and achieve high speed; adopt a single-plunger double-stroke dual-volume chamber structure to reduce product filling time, improve injection volume accuracy, increase flow, reduce pulsation, and reduce costs.

[0040] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present application, and these equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A high-speed injection pump, Features: It includes a pump body and a partition component, the pump body is provided with an inner cavity, the partition component is located in the inner cavity, the partition component divides the inner cavity into a liquid storage cavity and a sealing cavity, the pump body is provided with a first liquid inlet channel and a first liquid outlet channel connected to the liquid storage cavity, the pump body is provided with a second liquid inlet channel and a second liquid outlet channel connected to the sealing cavity, and the partition component can move in the inner cavity to compress and expand the sealing cavity.

2. The high-speed liquid injection pump according to claim 1, Features: A piston rod is provided in the pump body, the piston rod is connected to the center of the partition component, and the piston rod is arranged along the length direction of the pump body. The piston rod can drive the partition component to move along the length direction of the pump body.

3. The high-speed liquid injection pump according to claim 2, Features: The pump body is provided with a moving component capable of driving the piston rod to reciprocate along the length direction of the pump body, and a floating joint is provided between the moving component and the end of the piston rod.

4. The high-speed liquid injection pump according to claim 3, Features: A screw rod is arranged in the pump body, an internal thread matched with the screw rod is arranged on the moving component, and the screw rod, the moving component and the piston rod are coaxially arranged.

5. The high-speed liquid injection pump according to claim 4, Features: A linear guide rail is arranged in the pump body, and a sliding seat cooperating with the linear guide rail is arranged on the moving component.

6. The high-speed liquid injection pump according to claim 5, Features: The pump body is provided with a motor capable of driving the screw to rotate axially, the piston rod, the screw, the moving component and the motor are arranged in sequence along the length direction of the pump body, and a screw fixing seat is provided in the pump body, and the screw fixing seat is located between the slide seat and the motor.

7. The high-speed liquid injection pump according to claim 6, Features: A coupling is provided between the driving shaft of the motor and the screw rod.

8. The high-speed liquid injection pump according to claim 1, Features: The partition component includes a sealing ring and a liquid separation block arranged along the cross section of the pump body. The sealing ring is sleeved on the outer circumference of the liquid separation block, and the outer circumference of the sealing ring abuts against the inner wall of the pump body.

9. The high-speed liquid injection pump according to claim 1, Features: The pump body is provided with a confluence block, the first liquid inlet flow channel, the second liquid inlet flow channel, the first liquid outlet flow channel and the second liquid outlet flow channel are all arranged on the confluence block, the first liquid inlet flow channel and the second liquid inlet flow channel converge into a liquid inlet, the first liquid outlet flow channel and the second liquid outlet flow channel converge into a liquid outlet, and the liquid inlet and the liquid outlet are relatively arranged on both sides of the confluence block.

10. The high-speed liquid injection pump according to claim 9, Features: A first liquid inlet check valve is provided in the first liquid inlet channel, a second liquid inlet check valve is provided in the second liquid inlet channel, a first liquid outlet check valve is provided in the first liquid outlet channel, and a second liquid outlet check valve is provided in the second liquid outlet channel. The first liquid inlet check valve, the second liquid inlet check valve, the first liquid outlet check valve and the second liquid outlet check valve are all installed on the manifold block, and a pressure plate is provided on the manifold block.

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