WO2021128688A1

WO2021128688A1 - Pressure pump and control system therefor

Info

Publication number: WO2021128688A1
Application number: PCT/CN2020/088375
Authority: WO
Inventors: 刘辉; 庞金伟; 潘芹; 冷德嵘; 李常青; 奚杰峰; 李宁; 刘春俊; 唐志; 韦建宇
Original assignee: 南微医学科技股份有限公司
Priority date: 2019-12-27
Filing date: 2020-04-30
Publication date: 2021-07-01
Also published as: CN110898289A

Abstract

A pressure pump (100) and a control system therefor. The pressure pump (100) comprises a pump head (110), a liquid drain pipeline, a driving mechanism, and a stop valve (120). The stop valve (120) comprises a valve body (121) and a valve element (122). The valve body (121) is provided with a first terminal connected to a liquid outlet of the pump head (110) and a second terminal connected to the liquid drain pipeline. The valve element (122) is rotatably connected to the valve body (121). The stop valve (120) is detachably connected to the driving mechanism. The driving mechanism is configured to drive the valve element (122) to rotate with respect to the valve body (121), such that the pressure pump (100) has a state in which the liquid outlet is connected to the liquid drain pipeline and a state in which the liquid outlet is disconnected from the liquid drain pipeline. The pressure pump (100) can block the liquid outlet when the pressure pump (100) stops operating, preventing the liquid from flowing out.

Description

Pressure pump and pressure pump control system

Cross references to related applications

This application claims the priority of the Chinese patent application with the application number CN201911377470.9 and the name "a pressure pump and pressure pump control system" filed with the Chinese Patent Office on December 27, 2019, the entire content of which is incorporated by reference In this application.

Technical field

This application relates to the technical field of medical devices, and specifically to a pressure pump and a pressure pump control system.

Background technique

At present, after the pressure pump stops the infusion, the liquid in the pipeline will flow out from the outlet end of the pipeline under the action of the residual pressure, so there are problems such as inaccurate control of the injection process and liquid waste.

Summary of the invention

The purpose of this application is to provide a pressure pump and a pressure pump control system, which can cut off the liquid outlet when the pressure pump stops working, so as to prevent the liquid from continuing to flow out.

The embodiments of this application are implemented as follows:

In the first aspect, an embodiment provides a pressure pump, which includes a pump head, a discharge pipe, a driving mechanism, and a shut-off valve;

The shut-off valve includes a valve body and a valve core; the valve body has a first end connected to the liquid outlet of the pump head and a second end connected to the discharge pipeline, and the valve core is rotatably connected with the valve body;

The shut-off valve is detachably connected with the drive mechanism, and the drive mechanism is configured to drive the valve core to rotate relative to the valve body, so that the pressure pump has a state in which the liquid outlet and the liquid discharge pipeline are connected, and the liquid outlet and the liquid discharge pipeline Blocked state.

In an alternative embodiment, the valve core is detachably connected to the drive mechanism;

Or the valve core is fixedly connected with the driving mechanism, and the valve core is detachably connected with the valve body.

In an alternative embodiment, the driving mechanism includes a rotating motor and a clamping member, the rotating motor is in transmission connection with the clamping member, the clamping member is configured to be engaged with the valve core, and the rotating motor is configured to drive the valve core to rotate.

In an optional embodiment, the shut-off valve further includes a rotating blade arranged on the outer peripheral surface of the valve core;

The clamping member includes a first division and a second division. The first division and the second division jointly define a clamping groove abutting the rotating blade and a clamping area abutting the valve core, the clamping area and the clamping groove Connected.

In an alternative embodiment, both the first subsection and the second subsection are provided with an arc-shaped structure portion, and the inner side wall of the arc-shaped structure portion is configured to abut the outer peripheral surface of the valve core.

In an alternative embodiment, the arc-shaped structure portion has a shape adapted to the outer peripheral surface of the valve core.

In an alternative embodiment, grooves are provided on both the first subsection and the second subsection, and the groove wall of the groove is configured to abut the outer peripheral surface of the valve core.

In an alternative embodiment, the first end is detachably connected to the liquid outlet;

The second end is detachably connected with the drain pipe.

In an optional embodiment, a pipe joint is further provided at the liquid outlet, and the pipe joint is configured to be detachably connected to the first end.

In an alternative embodiment, the pump head is provided with an inner cavity and a liquid discharge channel, the liquid discharge channel is configured to connect the liquid outlet and the inner cavity, and the discharge channel is provided with an on-off valve.

In an optional embodiment, the pump head further includes a piston movably arranged in the inner cavity, and the piston divides the inner cavity into a first chamber and a second chamber;

Both the first chamber and the second chamber are in communication with the drainage channel.

In an alternative embodiment, the drainage flow channel includes a first flow channel and a second flow channel;

Both the first chamber and the second chamber are in communication with the first flow channel, the on-off valve is located at the junction of the first flow channel and the second flow channel, and the liquid outlet is in communication with the second flow channel.

In an alternative embodiment, the first flow channel is parallel to the second flow channel.

In an alternative embodiment, the first flow channel includes a first segment and a second segment;

The first chamber is in communication with the first section;

The second chamber communicates with the second section.

In an alternative embodiment, the on-off valve is a three-way valve;

The first end of the on-off valve is in communication with the first section;

The second end of the on-off valve is in communication with the second section;

The third end of the on-off valve is in communication with the second flow passage.

In an alternative embodiment, the three-way valve is located between the first section and the second section.

In an alternative embodiment, the spool of the on-off valve and the shut-off valve are linked;

When the liquid outlet and the drain pipe are in a conductive state, the drain channel is in a conductive state;

When the liquid outlet and the drain pipe are in a blocked state, the drain channel is in a blocked state.

In the second aspect, the embodiments provide a pressure pump control system. The pressure pump control system is configured to control the pressure pump as in any one of the foregoing embodiments. The pressure pump control system includes a controller, which is electrically connected to the driving mechanism, and controls The device is configured to control the driving mechanism to drive the valve core to rotate relative to the valve body, so that the pressure pump has a state where the liquid outlet and the discharge pipe are connected, and the liquid outlet and the discharge pipe are blocked.

The beneficial effects of the embodiments of the present application include:

The pressure pump includes a pump head, a discharge pipeline, a driving mechanism and a shut-off valve. Wherein, the shut-off valve is arranged at the liquid outlet of the pump head, which can cut off the liquid outlet when the pressure pump stops working, so as to prevent the liquid from continuing to flow out. Specifically, the shut-off valve includes a valve body and a valve core. The valve body has a first end connected to the liquid outlet of the pump head and a second end connected to the drain pipeline. The valve core is rotatably connected to the valve body. The driving mechanism is configured to drive the spool to rotate relative to the valve body, so that when the pressure pump is working normally, the spool is driven to rotate through the driving mechanism to make the outlet of the pressure pump and the discharge pipeline in a state of conduction. When the pump stops working, the valve core is driven to rotate through the driving mechanism and the liquid outlet of the pressure pump is in a disconnected state from the liquid discharge pipeline.

Description of the drawings

In order to more clearly describe the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application, and therefore do not It should be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative work.

Figure 1 is a schematic structural diagram of a pressure pump in an embodiment of the application;

Fig. 2 is an enlarged schematic diagram of Ⅱ in Fig. 1;

FIG. 3 is a schematic diagram of the structure of the pump head in the embodiment of the application;

4 is a schematic diagram of the connection between the valve core and the driving mechanism in an embodiment of the application;

5 is a schematic diagram of the connection between the valve core and the driving mechanism in other embodiments of the application;

FIG. 6 is a schematic diagram of the structure of the clip in the embodiment of the application;

FIG. 7 is a schematic diagram of the structure of the clamping member in other embodiments of the application;

FIG. 8 is a schematic diagram of the structure of a liquid discharge channel in an embodiment of the application;

FIG. 9 is a schematic diagram of the structure of the first flow channel in an embodiment of the application.

Icon: 100-pressure pump; 110-pump head; 120-stop valve; 121-valve body; 122-spool; 123-rotating blade; 130-clamping part; 131-first division; 132-second division Section; 133- card slot; 134- clamping area; 140- pipe joint; 112- drainage channel; 150- on-off valve; 113- first flow channel; 114- second flow channel; 115- first section ; 116-Second subsection.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should be noted that similar reference numerals and letters indicate similar items in the following figures. Therefore, once a certain item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" or "outer", etc. The indicated position or position relationship is based on the position or position relationship shown in the drawings, or the position or position relationship usually placed when the product of the invention is used. It is only for the convenience of describing the application and simplifying the description, rather than indicating or implying The referred device or element must have a specific orientation or must be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" or "third" are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

In addition, the terms "horizontal" or "vertical" do not mean that the component is required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of this application, it should also be noted that the terms "set", "install", "connected" or "connected" should be understood in a broad sense, unless otherwise clearly specified and limited. For example, it may be a fixed connection. It can also be detachably connected or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood under specific circumstances.

Based on the above reasons, the present application provides a pressure pump 100, which can synchronously cut off the liquid at the outlet end after the pressure pump 100 stops working, so as to achieve rapid cut-off at the outlet end and cut off the remaining liquid pressure in the pipeline. Before the outlet end, to prevent the liquid from continuing to flow out, and to save the high pressure for the next output, so as to realize the precise control of the liquid flow.

Please refer to Figures 1 to 3, Figure 1 shows the structure of the pressure pump in the embodiment of the present application, Figure 2 shows the structure of the shut-off valve in the embodiment of the present application, and Figure 3 shows the pump head in the embodiment of the present application Structure.

This embodiment provides a pressure pump 100. The pressure pump 100 includes a pump head 110, a discharge pipe (not shown in the form of drawings), a driving mechanism (not shown in the form of drawings), and a shut-off valve 120;

The shut-off valve 120 includes a valve body 121 and a valve core 122; the valve body 121 has a first end connected to the liquid outlet of the pump head 110 and a second end connected to the drain line. The valve core 122 is rotatably connected to the valve body 121 connections;

The shut-off valve 120 is detachably connected to the drive mechanism, and the drive mechanism is configured to drive the valve core 122 to rotate relative to the valve body 121 so that the pressure pump 100 has a state in which the liquid outlet and the liquid discharge pipe are connected, and the liquid outlet and The state of the drain line blocked.

The working principle of the pressure pump 100 is:

The pressure pump 100 includes a pump head 110, a discharge pipeline, a driving mechanism and a shut-off valve 120. Wherein, the shut-off valve 120 is arranged at the liquid outlet of the pump head 110, which can cut off the liquid outlet when the pressure pump 100 stops working, so as to prevent the liquid in the pump head 110 from continuing to flow out.

Specifically, the shut-off valve 120 includes a valve body 121 and a valve core 122. The valve body 121 has a first end connected to the liquid outlet of the pump head 110 and a second end connected to the drain line. The valve core 122 is rotatable Connect with the valve body 121. The driving mechanism is configured to drive the spool 122 to rotate relative to the valve body 121, so as to drive the spool 122 to rotate through the driving mechanism and make the liquid outlet of the pressure pump 100 and the discharge pipeline in a conductive state, so that the pump head 110 When the pressure pump 100 stops working, the spool 122 is driven to rotate through the driving mechanism, and the liquid outlet of the pressure pump 100 is disconnected from the discharge pipeline.

It should be noted that, in this embodiment, the shut-off valve 120 is set at the connection between the liquid outlet of the pump head 110 and the discharge pipe, that is, when the shut-off valve 120 is set, when the liquid outlet of the pump head 110 is located in the pump When the head 110 is outside, the shut-off valve 120 is relatively located outside the pump head 110. At this time, to facilitate the removal of the pump head 110 in the pressure pump 100 during the process of installing and maintaining the pump head 110, when the shut-off valve 120 is set, the shut-off The connection between the valve 120 and the driving mechanism is a detachable connection, thereby simplifying the installation steps of the pump head 110.

It can be seen from the above content that the stop valve 120 is driven by the driving mechanism to drive the valve core 122 of the stop valve 120 to move relative to the valve body 121 during the working process, so as to adjust its conduction state. In this process, since the driving mechanism is detachably connected to the valve core 122, when the driving mechanism is set, the driving mechanism may include a rotating motor (not shown in the form of the figure) and the clamping member 130. Wherein, the rotating motor is drivingly connected with the clamping member 130, the clamping member 130 is configured to be engaged with the valve core 122, and the rotating motor is configured to drive the valve core 122 to rotate. In this arrangement, the drive mechanism and the valve core 122 can be detachably connected through the engagement of the clamping member 130 and the valve core 122. At the same time, since the clamping member 130 is in transmission connection with the rotating motor, the clamping member 130 can also be It plays the role of driving the spool 122 to rotate. Therefore, when the rotating motor is working, the conduction state of the shut-off valve 120 can be controlled through the transmission function of the clamping member 130.

Please refer to FIGS. 4 and 5. FIG. 4 shows the connection mode of the valve core and the driving mechanism in an embodiment of the present application, and FIG. 5 shows the connection mode of the valve core and the driving mechanism in other embodiments of the present application. Further, in this embodiment, in order to make the shut-off valve 120 and the driving mechanism detachably connected, the valve core 122 is detachably connected to the clamping member 130 of the driving mechanism; and in other embodiments of the present application, The valve core 122 can be fixedly connected with the clamping member 130 of the driving mechanism, and the valve core 122 can be detachably connected with the valve body 121.

It should be noted that, in the embodiment of the present application, when setting the rotating motor and drivingly connecting the rotating motor to the clamping member 130, the function of the rotating motor is to drive the clamping member 130 to rotate, so the rotating motor is selected At the same time, the motor structure in the prior art can be used; at the same time, the transmission connection with the clamping member 130 can be a direct connection, or a transmission structure can be provided between the clamping member 130 and the rotating motor.

Further, when the valve core 122 is set, there are many ways to engage the valve core 122 and the clamping member 130, and in this embodiment, the clamping method of the valve core 122 and the clamping member 130 is adopted in the valve Rotating blades 123 are provided on the outer peripheral surface of the core 122, and the effect of driving the valve core 122 to rotate is achieved by the resisting action of the clamping member 130 and the rotating blades 123.

It should be noted that when the rotating blade 123 is set, the transmission between the rotating blade 123 and the clamping member 130 is realized to realize the transmission between the clamping member 130 and the valve core 122. At this time, the valve core 122 and the card The cooperation between the connecting members 130 only serves to position and improve the connection stability. Therefore, the outer peripheral surface of the valve core 122 and the clamping member 130 do not have a transmission function at this time.

When the rotating blade 123 is not provided, when the outer peripheral surface of the valve core 122 and the clamping member 130 need to be pressed and transmitted, the outer peripheral surface of the valve core 122 can be interference fit with the clamping member 130 to achieve transmission. effect.

Please refer to FIG. 6, which shows the structure of the clamping member in the embodiment of the present application.

Therefore, based on the foregoing, when the shut-off valve 120 is provided, the shut-off valve 120 further includes a rotating blade 123 provided on the outer peripheral surface of the valve core 122. The clamping member 130 includes a first part 131 and a second part 132, and the first part 131 and the second part 132 jointly define a groove 133 abutting against the rotating blade 123 and a card abutting against the valve core 122 The engaging area 134, the engaging area 134 and the card slot 133 are communicated with each other. When the clamping member 130 is clamped with the valve core 122, the valve core 122 extends into the clamping area 134, and the rotating blade 123 extends into the clamping groove 133, and since the clamping area 134 is in communication with the clamping groove 133, While the valve core 122 is mated with the engagement area 134, the rotating blade 123 can be engaged with the slot 133; thus, through the engagement of the slot 133 and the rotating blade 123, the engagement member 130 can be driven by the rotating motor. After that, the valve core 122 is driven to rotate relative to the valve body 121. In addition, grooves are provided on the first segment 131 and the second segment 132, and the groove wall of the groove is arranged to abut the outer peripheral surface of the valve core 122.

Please refer to FIG. 7, which shows the structure of the clamping member in other embodiments of the present application.

In other embodiments of the present application, when the valve core 122 is matched with the engagement area 134, in order to improve the stability of the fit, the first part 131 and the second part 132 may be arc-shaped structural parts. The inner side wall of the arc-shaped structure part is arranged to abut the outer peripheral surface of the valve core 122, and the arc-shaped structure part has a shape corresponding to the outer peripheral surface of the valve core 122, so that the arc-shaped structure part can be in contact with the outer peripheral surface of the valve core 122. Surface contact.

In this embodiment, in order to reduce the difficulty of maintenance of the pump head 110, while the connection between the valve core 122 and the clamping member 130 is set to be detachable, the first end can also be detachably connected to the liquid outlet. , The second end is detachably connected with the drain pipe, so as to simplify the installation and maintenance steps of the pump head 110 through this arrangement.

When the connection between the first end and the liquid outlet is set to be detachable, a pipe joint 140 may be provided at the liquid outlet, so that the liquid outlet and the first end can be detachably connected through the pipe joint 140.

Based on the above-mentioned implementation, in this embodiment, an on-off valve 150 can also be provided in the pump head 110 to control the conduction of the liquid in the pump head 110 through the on-off valve 150, so as to control the pump head 110 The internal shut-off function further prevents the pressure pump 100 from flowing out of liquid after it stops running.

Please refer to FIG. 8 and FIG. 9. FIG. 8 shows the structure of the liquid discharge channel in the embodiment of the present application; FIG. 9 shows the structure of the first flow channel in the embodiment of the present application.

Based on this, in other embodiments of the present application, the pump head 110 is provided with an inner cavity and a liquid discharge channel 112, and the liquid discharge channel 112 is configured to communicate with the liquid outlet and the inner cavity, and on the liquid discharge channel 112 An on-off valve 150 is provided.

Further, the pump head 110 further includes a piston movably arranged in the inner cavity, and the piston divides the inner cavity into a first chamber and a second chamber; wherein, the first chamber and the second chamber are both connected to the drain The flow passage 112 is in communication, so that the liquid in the first chamber and the second chamber can flow into the drain flow passage 112 sequentially and continuously through the movement of the piston.

In addition, when the drainage channel 112 is provided, in order to prevent the liquid flow between the drainage channel 112 and the first chamber and the second chamber from interfering with each other, the drainage channel 112 includes the first channel 113 And the second flow passage 114; wherein, the first chamber and the second chamber are both in communication with the first flow passage 113, and the on-off valve 150 is located at the junction of the first flow passage 113 and the second flow passage 114, and the liquid outlet and The second flow passage 114 communicates with each other. Specifically, the first flow channel 113 includes a first segment 115 and a second segment 116, the first chamber is in communication with the first segment 115, and the second chamber is in communication with the second segment 116.

Further, when the first flow channel 113 and the second flow channel 114 are arranged, in order to facilitate the arrangement of the on-off valve 150, the first flow channel 113 and the second flow channel 114 are spaced apart and parallel to each other, so that the on-off valve 150 can be easily connected. It is arranged between the first flow passage 113 and the second flow passage 114, and the first flow passage 113 and the second flow passage 114 can only be conducted through the on-off valve 150.

Based on the above arrangement of the discharge channel 112, the on-off valve 150 can be a three-way valve, and the first end of the on-off valve 150 is connected to the first section 115, and the second end of the on-off valve 150 is connected to the second section 115. The segment 116 is in communication, and the third end of the on-off valve 150 is in communication with the second flow passage 114. In addition, since the first chamber and the second chamber are respectively connected to the first section 115 and the second section 116, the three-way valve is located between the first section 115 and the second section 116.

In summary, it can be seen from the foregoing that in other embodiments of the present application, the on-off valve 150 is compared with the shut-off valve 120. The on-off valve 150 is arranged in the pump head 110 and configured to control the inside of the pump head 110. The conduction state of the drainage channel 112; and the shut-off valve 120 is arranged outside the pump head 110 and is configured to control the conduction state of the drainage channel 112 in the pump head 110.

Therefore, when the pressure pump 100 is in the discharge state, the discharge channel 112 needs to be connected, and the liquid outlet needs to be connected to the discharge pipe. At this time, both the stop valve 120 and the on-off valve 150 need to be connected. status. In addition, when the pressure pump 100 is in a stopped working state, the liquid discharge channel 112 needs to be disconnected, and the liquid outlet needs to be disconnected from the liquid discharge pipe. At this time, to prevent the liquid from flowing out, the shut-off valve 120 The on-off valve 150 and the on-off valve 150 need to be in the blocking state. In this embodiment, in order to ensure the interception effect, the method in which both are in the blocking state at the same time is adopted.

With this arrangement, in other embodiments of the present application, when the shut-off valve 120 and the on-off valve 150 are set, the two can be linked in a linked manner, so that both can be in a conducting state at the same time, or in a blocking state at the same time. . Therefore, the on-off valve 150 is linked with the spool 122 of the shut-off valve 120, the purpose of which is to make the discharge channel 112 in a conductive state when the liquid outlet and the discharge pipe are in a conductive state; When the liquid port and the drain pipe are in a blocked state, the drain channel 112 is in a blocked state.

Through such a linkage arrangement, when the pressure pump 100 is in the working state, the shut-off valve 120 and the discharge flow passage 112 are in a conducting state; and when the pressure pump 100 is in a stopped working state, the shut-off valve 120 and the discharge flow The lane 112 is in a blocked state. Its purpose is to enable the discharge channel 112, the discharge pipe and the liquid outlet to communicate with each other when the pressure pump 100 is working normally, and form a pipeline for liquid output; similarly, when the pressure pump 100 stops working At this time, the liquid can be intercepted at the liquid discharge channel 112 and the liquid outlet, so that the internal and external pipelines of the pressure pump 100 can be intercepted at the same time, so as to prevent the liquid from flowing out after the pressure pump 100 stops working.

Specifically, since the mechanism that drives the shut-off valve 120 is a drive mechanism, under this condition, in order to make the shut-off valve 120 and the on-off valve 150 work together, the drive mechanism is connected to the on-off valve 150 in transmission, or the on-off valve 150 is in transmission connection with the clamping member 130 through a transmission structure, so that when the driving mechanism operates, it can simultaneously drive the stop valve 120 and the on-off valve 150 to move.

It should be noted that, in other embodiments of the present application, the state control method of the stop valve 120 and the on-off valve 150 may also adopt mutually independent driving mechanisms, and realize the unification of the states through the control system.

In addition, based on the aforementioned pressure pump 100, the present application also provides a pressure pump 100 control system configured to control the pressure pump 100 as in the aforementioned embodiment.

The pressure pump 100 control system includes a controller, which is electrically connected to a driving mechanism. The controller is configured to control the driving mechanism to drive the valve core 122 to rotate relative to the valve body 121, so that the pressure pump 100 has a liquid outlet and a liquid discharge pipeline. The state of conduction and the state of blocking the liquid outlet and the discharge pipe.

Specifically, when the controller receives the liquid conduction command issued by the external control switch, the controller controls the driving mechanism to rotate and drives the spool 122 to rotate, so that the liquid outlet of the pressure pump 100 and the liquid discharge pipeline are in conduction At this time, the liquid in the pump head 110 can flow from the liquid outlet to the liquid discharge pipeline;

When the controller receives the liquid shut-off command issued by the external control switch, the controller controls the driving mechanism to rotate and drives the spool 122 to rotate, so that the liquid outlet and the liquid discharge pipeline of the pressure pump 100 are in a blocked state. When the liquid in the pump head 110 flows from the liquid outlet to the liquid discharge pipe, the passage is blocked.

The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement or improvement made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A pressure pump characterized by:

The pressure pump includes a pump head, a discharge pipeline, a driving mechanism and a shut-off valve;

The shut-off valve includes a valve body and a valve core; the valve body has a first end connected to the liquid outlet of the pump head and a second end connected to the drain line, the valve core is rotatable Ground is connected with the valve body;

The shut-off valve is detachably connected to the driving mechanism, and the driving mechanism is configured to drive the valve core to rotate relative to the valve body, so that the pressure pump has the liquid outlet and the liquid discharge The state in which the pipeline is connected, and the state in which the liquid outlet and the drain pipeline are blocked.
The pressure pump according to claim 1, characterized in that:

The valve core is detachably connected with the driving mechanism;

Or the valve core is fixedly connected to the driving mechanism, and the valve core is detachably connected to the valve body.
The pressure pump according to claim 1, characterized in that:

The driving mechanism includes a rotating motor and a clamping member, the rotating motor is drivingly connected to the clamping member, the clamping member is configured to be engaged with the valve core, and the rotation motor is configured to drive the valve The core rotates.
The pressure pump according to claim 3, characterized in that:

The shut-off valve further includes a rotating blade arranged on the outer peripheral surface of the valve core;

The clamping member includes a first sub-part and a second sub-part. The first sub-part and the second sub-part jointly define a clamping groove abutting against the rotating blade and a clamping groove abutting against the valve core. An engaging area, the engaging area communicates with the card slot.
The pressure pump according to claim 4, characterized in that:

Both the first subsection and the second subsection are provided with an arc-shaped structure portion, and the inner side wall of the arc-shaped structure portion is configured to abut the outer peripheral surface of the valve core.
The pressure pump according to claim 5, characterized in that:

The arc-shaped structure portion has a shape adapted to the outer peripheral surface of the valve core.
The pressure pump according to claim 4, characterized in that:

A groove is provided on both the first subsection and the second subsection, and the groove wall of the groove is configured to abut the outer peripheral surface of the valve core.
The pressure pump according to claim 1, characterized in that:

The first end is detachably connected with the liquid outlet;

The second end is detachably connected with the drain pipeline.
The pressure pump according to claim 8, characterized in that:

A pipe joint is also provided at the liquid outlet, and the pipe joint is configured to be detachably connected to the first end.
The pressure pump according to any one of claims 1-9, characterized in that:

The pump head is provided with an inner cavity and a liquid discharge channel, the liquid discharge channel is configured to connect the liquid outlet and the inner cavity, and the discharge channel is provided with an on-off valve.
The pressure pump according to claim 10, characterized in that:

The pump head further includes a piston movably arranged in the inner cavity, and the piston divides the inner cavity into a first chamber and a second chamber;

Both the first chamber and the second chamber are in communication with the drainage channel.
The pressure pump according to claim 11, characterized in that:

The drainage flow channel includes a first flow channel and a second flow channel;

The first chamber and the second chamber are both in communication with the first flow passage, the on-off valve is located at the junction of the first flow passage and the second flow passage, and the liquid outlet is connected to the The second flow channel is in communication.
The pressure pump according to claim 12, characterized in that:

The first flow channel is parallel to the second flow channel.
The pressure pump according to claim 13, characterized in that:

The first flow channel includes a first segment and a second segment;

The first chamber is in communication with the first section;

The second chamber communicates with the second section.
The pressure pump according to claim 14, characterized in that:

The on-off valve is a three-way valve;

The first end of the on-off valve is in communication with the first section;

The second end of the on-off valve is in communication with the second section;

The third end of the on-off valve is in communication with the second flow passage.
The pressure pump according to claim 15, characterized in that:

The three-way valve is located between the first section and the second section.
The pressure pump according to claim 10, characterized in that:

The on-off valve is linked with the spool of the shut-off valve;

The liquid outlet and the liquid drain pipeline

When the liquid outlet and the drain pipe are in a conductive state, the drain channel is in a conductive state;

When the liquid outlet and the drain pipeline are in a blocked state, the drain channel is in a blocked state.
A pressure pump control system configured to control the pressure pump according to any one of claims 1-17, characterized in that:

The pressure pump control system includes a controller that is electrically connected to the driving mechanism, and the controller is configured to control the driving mechanism to drive the valve core to rotate relative to the valve body, so that the The pressure pump has a state in which the liquid outlet and the discharge line are in conduction, and a state in which the liquid outlet and the discharge line are blocked.