A pressure pump and a pressure pump control system

Abstract

The present invention relates to the field of medical device technology, and in particular, to a pressure pump and a pressure pump control system. A pressure pump, the pressure pump includes a pump head, a discharge pipeline, a driving mechanism and a stop valve. The stop 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 to the valve body. The driving mechanism is detachably connected to the driving mechanism, and the driving mechanism is used 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 discharge pipeline are connected, and a state in which the liquid outlet and the discharge pipeline are blocked. The pressure pump can cut off the liquid outlet when the pressure pump stops working to prevent the liquid from continuing to flow out.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a pressure pump and a pressure pump control system. Background Art

[0002] Currently, after the pressure pump stops infusing, the liquid in the pipeline will flow out from the outlet end of the pipeline under the action of the residual pressure, resulting in problems such as the inability to accurately control the injection process and liquid waste. Summary of the Invention

[0003] The object of the present invention 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 to prevent the liquid from continuing to flow out.

[0004] The embodiment of the present invention is achieved as follows:

[0005] In a first aspect, an embodiment provides a pressure pump, the pressure pump comprising a pump head, a discharge pipeline, a drive mechanism and a stop valve;

[0006] The stop 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 to the valve body;

[0007] The stop valve is detachably connected to the drive mechanism, which is used 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 discharge pipeline are connected, and a state in which the liquid outlet and the discharge pipeline are blocked.

[0008] In an optional embodiment, the valve core is detachably connected to the driving mechanism;

[0009] Or the valve core is fixedly connected to the driving mechanism, and the valve core is detachably connected to the valve body.

[0010] In an optional embodiment, the driving mechanism includes a rotating motor and a clamping member, the rotating motor is transmission-connected to the clamping member, the clamping member is used to engage with the valve core, and the rotating motor is used to drive the valve core to rotate.

[0011] In an optional embodiment, the stop valve further includes a rotating blade provided on the outer peripheral surface of the valve core;

[0012] The clamping member includes a first sub-part and a second sub-part, which jointly define a clamping groove abutting against the rotating blade and a clamping area abutting against the valve core, and the clamping area is communicated with the clamping groove.

[0013] In an optional embodiment, an arc-shaped structure portion is provided on both the first sub-portion and the second sub-portion, and the inner side wall of the arc-shaped structure portion is used to abut against the outer peripheral surface of the valve core.

[0014] In an optional embodiment, the arc-shaped structure portion has a shape that is compatible with the outer circumferential surface of the valve core.

[0015] In an optional embodiment, a groove is formed on both the first sub-portion and the second sub-portion, and the groove wall is used to abut against the outer peripheral surface of the valve core.

[0016] In an optional embodiment, the first end is detachably connected to the liquid outlet;

[0017] The second end is detachably connected to the liquid discharge pipeline.

[0018] In an optional embodiment, a pipe joint is further provided at the liquid outlet, and the pipe joint is used to be detachably connected to the first end.

[0019] In an optional embodiment, an inner cavity and a liquid discharge channel are provided in the pump head. The liquid discharge channel is used to connect the liquid outlet and the inner cavity. An on-off valve is provided on the liquid discharge channel.

[0020] In an optional embodiment, the pump head further comprises a piston movably disposed in the inner cavity, the piston dividing the inner cavity into a first chamber and a second chamber;

[0021] The first chamber and the second chamber are both communicated with the drainage channel.

[0022] In an optional embodiment, the drainage channel includes a first channel and a second channel;

[0023] The first chamber and the second chamber are both communicated with the first flow channel. The on-off valve is located at the connection between the first flow channel and the second flow channel, and the liquid outlet is communicated with the second flow channel.

[0024] In an optional embodiment, the first flow channel is parallel to the second flow channel.

[0025] In an optional embodiment, the first flow channel includes a first segment and a second segment;

[0026] The first chamber is in communication with the first segment;

[0027] The second chamber is in communication with the second segment.

[0028] In an optional embodiment, the on-off valve is a three-way valve;

[0029] The first end of the on-off valve is in communication with the first segment;

[0030] The second end of the on-off valve is communicated with the second segment;

[0031] The third end of the on-off valve is communicated with the second flow channel.

[0032] In an optional embodiment, the three-way valve is located between the first section and the second section.

[0033] In an optional embodiment, the on-off valve is linked to the valve core of the stop valve;

[0034] When the liquid outlet and the liquid discharge pipeline are in a conducting state, the liquid discharge channel is in a conducting state;

[0035] When the liquid outlet and the liquid discharge pipeline are in a blocked state, the liquid discharge flow channel is in a blocked state.

[0036] In the second aspect, an embodiment provides a pressure pump control system, which is used to control a pressure pump such as any one of the aforementioned embodiments. The pressure pump control system includes a controller, which is electrically connected to a driving mechanism. The controller is used 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 in which the liquid outlet and the discharge pipeline are connected, and a state in which the liquid outlet and the discharge pipeline are blocked.

[0037] The beneficial effects of the embodiments of the present invention include:

[0038] The pressure pump includes a pump head, a discharge line, a driving mechanism and a shut-off valve. The shut-off valve is arranged at the liquid outlet of the pump head, and can shut off the liquid outlet when the pressure pump stops working 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 discharge line, and the valve core is rotatably connected to the valve body. The driving mechanism is used to drive the valve core to rotate relative to the valve body, so that when the pressure pump is working normally, the valve core is driven to rotate by the driving mechanism and the liquid outlet of the pressure pump and the discharge line are in a conductive state, and when the pressure pump stops working, the valve core is driven to rotate by the driving mechanism and the liquid outlet of the pressure pump and the discharge line are in a disconnected state. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A schematic structural diagram of a pressure pump in an embodiment of the present invention;

[0041] Figure 2 for Figure 1 The enlarged schematic diagram of the middle part Ⅱ;

[0042] Figure 3 This is a schematic structural diagram of a pump head in an embodiment of the present invention;

[0043] Figure 4Schematic diagram of the connection between the valve core and the driving mechanism in an embodiment of the present invention;

[0044] Figure 5 A schematic diagram of the connection between the valve core and the driving mechanism in other embodiments of the present invention;

[0045] Figure 6 Schematic diagram of the structure of the clamping member in an embodiment of the present invention;

[0046] Figure 7 A schematic structural diagram of a clamping member in another embodiment of the present invention;

[0047] Figure 8 A schematic structural diagram of a liquid discharge channel in an embodiment of the present invention;

[0048] Figure 9 Schematic diagram of the structure of the first flow channel in an embodiment of the present invention.

[0049] Icons: 100-pressure pump; 110-pump head; 120-stop valve; 121-valve body; 122-valve core; 123-rotating blades; 130-clamping part; 131-first subsection; 132-second subsection; 133-clip groove; 134-clamping area; 140-pipe joint; 112-drainage channel; 150-on-off valve; 113-first channel; 114-second channel; 115-first section; 116-second section. DETAILED DESCRIPTION

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0053] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0055] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0056] Currently, after the pressure pump stops infusing, the liquid in the pipeline will flow out from the outlet end of the pipeline under the action of the residual pressure, resulting in problems such as the inability to accurately control the injection process and liquid waste.

[0057] Based on the above reasons, the present invention provides a pressure pump 100, which can synchronously cut off the liquid at the outlet end after the pressure pump 100 stops working, thereby achieving rapid cut-off at the outlet end, and cutting off the remaining liquid pressure in the pipeline before the outlet end to avoid continued outflow of the liquid and preserve high pressure for the next output, thereby achieving precise control of liquid flow.

[0058] Please refer to Figure 1-Figure 3 , Figure 1 The structure of the pressure pump in the embodiment of the present invention is shown. Figure 2 The structure of the stop valve in the embodiment of the present invention is shown. Figure 3 The structure of the pump head in the embodiment of the present invention is shown.

[0059] This embodiment provides a pressure pump 100, which includes a pump head 110, a discharge pipeline (not shown in the drawings), a driving mechanism (not shown in the drawings), and a stop valve 120;

[0060] The stop 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 discharge pipe, and the valve core 122 is rotatably connected to the valve body 121;

[0061] The stop valve 120 is detachably connected to a driving mechanism, which is used to drive the valve core 122 to rotate relative to the valve body 121, so that the pressure pump 100 has a state where the liquid outlet and the discharge pipeline are connected, or a state where the liquid outlet and the discharge pipeline are blocked.

[0062] The working principle of the pressure pump 100 is:

[0063] The pressure pump 100 includes a pump head 110, a discharge line, a drive mechanism, and a stop valve 120. The stop valve 120 is provided at the liquid outlet of the pump head 110 and can cut off the liquid outlet when the pressure pump 100 stops working to prevent the liquid in the pump head 110 from continuing to flow out.

[0064] 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 discharge line. The valve core 122 is rotatably connected to the valve body 121. A driving mechanism is used to drive the valve core 122 to rotate relative to the valve body 121. The driving mechanism drives the valve core 122 to rotate and connect the liquid outlet of the pressure pump 100 and the discharge line, thereby allowing liquid in the pump head 110 to flow from the liquid outlet to the discharge line. When the pressure pump 100 stops working, the driving mechanism drives the valve core 122 to rotate and disconnect the liquid outlet of the pressure pump 100 from the discharge line.

[0065] It should be noted that, in this embodiment, the stop valve 120 is arranged at the connection between the liquid outlet of the pump head 110 and the discharge pipeline, that is, when the stop valve 120 is set, when the liquid outlet of the pump head 110 is located outside the pump head 110, the stop valve 120 is relatively located outside the pump head 110. At this time, in order to facilitate the disassembly of the pump head 110 in the pressure pump 100 during the installation and maintenance of the pump head 110, when the stop valve 120 is set, the connection method of the stop valve 120 and the driving mechanism is detachably connected, thereby simplifying the installation steps of the pump head 110.

[0066] As can be seen from the above, during operation, the stop valve 120 is driven by a driving mechanism to move the valve core 122 of the stop valve 120 relative to the valve body 121, thereby adjusting the conduction state of the stop valve 120. During this process, since the driving mechanism is detachably connected to the valve core 122, the driving mechanism may include a rotary motor (not shown in the figures) and a clamping member 130. The rotary motor is in transmission connection with the clamping member 130, which is configured to engage with the valve core 122 and drive the valve core 122 to rotate. This arrangement achieves a detachable connection between the driving mechanism and the valve core 122 through the engagement of the clamping member 130 with the valve core 122. Furthermore, since the clamping member 130 is in transmission connection with the rotary motor, the clamping member 130 can also drive the valve core 122 to rotate. Therefore, when the rotary motor is in operation, the conduction state of the stop valve 120 can be controlled through the transmission action of the clamping member 130.

[0067] Please refer to Figure 4 and Figure 5 , Figure 4 The figure shows the connection between the valve core and the driving mechanism in the embodiment of the present invention. Figure 5 The figure shows the connection method between the valve core and the drive mechanism in other embodiments of the present invention. Furthermore, in this embodiment, to enable the stop valve 120 to be detachably connected to the drive mechanism, the valve core 122 is detachably connected to the drive mechanism's clamping member 130. In other embodiments of the present invention, the valve core 122 can also be fixedly connected to the drive mechanism's clamping member 130, while the valve core 122 is detachably connected to the valve body 121.

[0068] It should be noted that, in an embodiment of the present invention, when setting a rotating motor and transmitting connecting the rotating motor to the clamping part 130, since the function of the rotating motor is to drive the clamping part 130 to rotate, when selecting a rotating motor, it can adopt a motor structure in the prior art; at the same time, its transmission connection method with the clamping part 130 can be a direct connection, or a transmission structure can be set between the clamping part 130 and the rotating motor.

[0069] Furthermore, when setting the valve core 122, there are multiple ways of engaging the valve core 122 with the clamping member 130. In the present embodiment, the way of engaging the valve core 122 with the clamping member 130 is to set a rotating blade 123 on the outer peripheral surface of the valve core 122, and through the abutment between the clamping member 130 and the rotating blade 123, the valve core 122 is driven to rotate.

[0070] It should be noted that when the rotating blade 123 is set, the transmission between the clamping part 130 and the valve core 122 is achieved through the abutment between the rotating blade 123 and the clamping part 130. At this time, the cooperation between the valve core 122 and the clamping part 130 only plays the role of positioning and improving the connection stability. Therefore, there is no transmission effect between the outer peripheral surface of the valve core 122 and the clamping part 130.

[0071] When the rotating blades 123 are not provided, when the outer peripheral surface of the valve core 122 and the clamping member 130 need to be used to achieve the pressing and transmission effect, the outer peripheral surface of the valve core 122 can be interference-fitted with the clamping member 130 to achieve the transmission effect.

[0072] Please refer to Figure 6 , Figure 6 The structure of the clamping member in the embodiment of the present invention is shown.

[0073] Therefore, based on the above, when the stop valve 120 is provided, the stop valve 120 further includes a rotating blade 123 disposed on the outer circumferential surface of the valve core 122. The clamping member 130 includes a first subsection 131 and a second subsection 132. The first subsection 131 and the second subsection 132 jointly define a clamping groove 133 that abuts the rotating blade 123 and a clamping area 134 that abuts the valve core 122. The clamping area 134 is in communication with the clamping groove 133. When the clamping member 130 is engaged with the valve core 122, the valve core 122 extends into the engaging area 134, and the rotating blade 123 extends into the engaging groove 133. Since the engaging area 134 is connected to the engaging groove 133, the rotating blade 123 can engage with the engaging groove 133 simultaneously with the engaging area 134. Thus, through the abutment between the engaging groove 133 and the rotating blade 123, the clamping member 130 can drive the valve core 122 to rotate relative to the valve body 121 after being driven by the rotary motor. Furthermore, grooves are provided on the first subsection 131 and the second subsection 132, and the groove walls are configured to abut against the outer circumferential surface of the valve core 122.

[0074] Please refer to Figure 7 , Figure 7 The structure of the clamping member in other embodiments of the present invention is shown.

[0075] In other embodiments of the present invention, when the valve core 122 cooperates with the locking area 134, in order to improve the stability of the cooperation, the first section 131 and the second section 132 can both be arc-shaped structural sections, and the inner side wall of the arc-shaped structural section is used to abut against the outer peripheral surface of the valve core 122, and the arc-shaped structural section has a shape adapted to the outer peripheral surface of the valve core 122, so that the arc-shaped structural section can be in surface contact with the outer peripheral surface of the valve core 122.

[0076] In this embodiment, in order to reduce the difficulty of maintaining the pump head 110, while setting the connection between the valve core 122 and the clamping part 130 to be a detachable connection, the first end can also be detachably connected to the liquid outlet, and the second end can be detachably connected to the discharge pipeline. Through such a setting, the installation and maintenance steps of the pump head 110 are simplified.

[0077] When the connection between the first end and the liquid outlet is set to be detachable, a pipe joint 140 can be provided at the liquid outlet to achieve a detachable connection between the liquid outlet and the first end through the pipe joint 140 .

[0078] Based on the above-mentioned implementation, in this embodiment, an on-off valve 150 can also be set in the pump head 110 to control the liquid conductivity in the pump head 110 through the on-off valve 150, thereby further preventing the pressure pump 100 from leaking liquid after stopping operation through the interception effect in the pump head 110.

[0079] Please refer to Figure 8 and Figure 9 , Figure 8 The structure of the liquid discharge channel in an embodiment of the present invention is shown; Figure 9 The structure of the first flow channel in an embodiment of the present invention is shown.

[0080] Based on this, in other embodiments of the present invention, an inner cavity and a drainage channel 112 are provided in the pump head 110 . The drainage channel 112 is used to connect the liquid outlet and the inner cavity, and an on-off valve 150 is provided on the drainage channel 112 .

[0081] Furthermore, the pump head 110 also includes a piston movably arranged in the inner cavity, which 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 drainage channel 112, so that the liquid in the first chamber and the second chamber can flow into the drainage channel 112 in sequence and continuously through the movement of the piston.

[0082] Furthermore, when disposing the drainage channel 112, to prevent interference between the liquid flows between the drainage channel 112 and the first and second chambers, the drainage channel 112 includes a first channel 113 and a second channel 114. Both the first and second chambers are connected to the first channel 113, and an on-off valve 150 is located at the junction of the first and second channels 113 and 114, with the liquid outlet connected to the second channel 114. Specifically, the first channel 113 includes a first segment 115 and a second segment 116. The first chamber is connected to the first segment 115, and the second chamber is connected to the second segment 116.

[0083] Furthermore, when setting the first flow channel 113 and the second flow channel 114, 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, thereby facilitating the arrangement of the on-off valve 150 between the first flow channel 113 and the second flow channel 114, and the first flow channel 113 and the second flow channel 114 can only be connected through the on-off valve 150.

[0084] Based on the aforementioned arrangement of the drainage channel 112, the on-off valve 150 can be a three-way valve, with a first end of the on-off valve 150 communicating with the first segment 115, a second end of the on-off valve 150 communicating with the second segment 116, and a third end of the on-off valve 150 communicating with the second channel 114. Furthermore, since the first chamber and the second chamber are in communication with the first segment 115 and the second segment 116, respectively, the three-way valve is located between the first segment 115 and the second segment 116.

[0085] In summary, it can be seen from the above content that in other embodiments of the present invention, compared with the stop valve 120, the on-off valve 150 is arranged in the pump head 110, and is used to control the conduction state of the discharge channel 112 in the pump head 110; while the stop valve 120 is arranged outside the pump head 110, and is used to control the conduction state of the discharge channel 112 in the pump head 110.

[0086] Therefore, when the pressure pump 100 is in the discharge state, the discharge channel 112 needs to be open, and the liquid outlet needs to be connected to the discharge pipeline. At this time, both the stop valve 120 and the on-off valve 150 need to be in the on state. In addition, when the pressure pump 100 is in the non-operating state, the discharge channel 112 needs to be disconnected, and the liquid outlet needs to be disconnected from the discharge pipeline. At this time, to prevent liquid from flowing out, either the stop valve 120 or the on-off valve 150 needs to be in the blocked state. In this embodiment, to ensure the interception effect, both are blocked at the same time.

[0087] In other embodiments of the present invention, when the shut-off valve 120 and the on-off valve 150 are provided, they can be linked together so that they can be in a conducting state or a blocked state at the same time. Therefore, the on-off valve 150 is linked together with the valve core 122 of the shut-off valve 120 to ensure that the discharge channel 112 is in a conducting state when the liquid outlet is in a conducting state with the discharge pipeline; similarly, the discharge channel 112 is blocked when the liquid outlet is in a blocked state with the discharge pipeline.

[0088] This linkage arrangement allows the shutoff valve 120 and the discharge channel 112 to be in a conducting state when the pressure pump 100 is in operation, and to be blocked when the pressure pump 100 is stopped. This allows the discharge channel 112, the discharge pipeline, and the liquid outlet to be interconnected when the pressure pump 100 is operating normally, forming a pipeline for liquid output. Similarly, when the pressure pump 100 is stopped, the liquid can be intercepted at the discharge channel 112 and the liquid outlet, thereby simultaneously intercepting the flow in the pipelines inside and outside the pressure pump 100 to prevent liquid from flowing out after the pressure pump 100 stops operating.

[0089] Specifically, since the mechanism that drives the stop valve 120 is a driving mechanism, under this condition, in order to make the stop valve 120 and the on-off valve 150 linked, the driving mechanism is connected to the on-off valve 150 through a transmission structure, or the on-off valve 150 is connected to the clamping member 130 through a transmission structure, so that when the driving mechanism is actuated, it can drive the stop valve 120 and the on-off valve 150 to move at the same time.

[0090] It should be noted that, in other embodiments of the present invention, the state control method of the stop valve 120 and the on-off valve 150 can also adopt independent driving mechanisms, and achieve state unification through a control system.

[0091] In addition, based on the aforementioned pressure pump 100, the present invention further provides a pressure pump 100 control system, which is used to control the pressure pump 100 as in the aforementioned embodiment.

[0092] The control system of the pressure pump 100 includes a controller, which is electrically connected to the driving mechanism. The controller is used 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 state in which the liquid outlet and the discharge pipeline are connected, and a state in which the liquid outlet and the discharge pipeline are blocked.

[0093] Specifically, when the controller receives a liquid conduction instruction from the external control switch, the controller controls the driving mechanism to rotate, and drives the valve core 122 to rotate, so that the liquid outlet of the pressure pump 100 and the discharge pipeline are in a conductive state. At this time, the liquid in the pump head 110 can flow from the liquid outlet to the discharge pipeline;

[0094] When the controller receives a liquid cutoff instruction from an external control switch, the controller controls the driving mechanism to rotate and drives the valve core 122 to rotate, so that the liquid outlet and the discharge pipeline of the pressure pump 100 are in a blocked state. At this time, the path for the liquid in the pump head 110 to flow from the liquid outlet to the discharge pipeline is blocked.

[0095] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A pressure pump, characterized in that: The pressure pump includes a pump head, a discharge pipeline, a driving mechanism and a stop valve; The stop 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 to the valve body; The stop valve is detachably connected to the drive mechanism, and the drive mechanism is used to drive the valve core to rotate relative to the valve body, so that the pressure pump can have a state where the liquid outlet is connected to the discharge pipeline, and a state where the liquid outlet is blocked from the discharge pipeline; The pump head is provided with an inner cavity and a liquid discharge channel, the liquid discharge channel is used to connect the liquid outlet and the inner cavity, and an on-off valve is provided on the liquid discharge channel; The pump head further comprises a piston movably disposed in the inner cavity, the piston dividing the inner cavity into a first chamber and a second chamber; the first chamber and the second chamber are both in communication with the drainage channel; The drainage channel includes a first channel and a second channel; the first chamber and the second chamber are both connected to the first channel, the on-off valve is located at the connection between the first channel and the second channel, and the liquid outlet is connected to the second channel; The first flow channel is parallel to the second flow channel; the first flow channel includes a first segment and a second segment; the first chamber is connected to the first segment; the second chamber is connected to the second segment; The on-off valve is a three-way valve; the first end of the on-off valve is connected to the first segment; the second end of the on-off valve is connected to the second segment; the third end of the on-off valve is connected to the second flow channel; The three-way valve is located between the first segment and the second segment; the on-off valve is linked to the valve core of the stop valve; When the liquid outlet and the liquid discharge pipeline are in a conducting state, the liquid discharge channel is in a conducting state; When the liquid outlet and the liquid discharge pipeline are in a blocked state, the liquid discharge channel is in a blocked state.

2. The pressure pump according to claim 1, characterized in that: The valve core is detachably connected to 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.

3. 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 in transmission connection with the clamping member. The clamping member is used to engage with the valve core. The rotating motor is used to drive the valve core to rotate.

4. The pressure pump according to claim 3, characterized in that: The stop 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 area abutting against the valve core, and the clamping area is communicated with the clamping groove.

5. The pressure pump according to claim 4, characterized in that: The first sub-portion and the second sub-portion are both provided with an arc-shaped structure portion, and the inner sidewall of the arc-shaped structure portion is used to abut against the outer peripheral surface of the valve core.

6. The pressure pump according to claim 5, characterized in that: The arc-shaped structure portion has a shape that matches the outer peripheral surface of the valve core.

7. The pressure pump according to claim 4, characterized in that: A groove is formed on each of the first sub-portion and the second sub-portion, and a groove wall of the groove is used to abut against the outer peripheral surface of the valve core.

8. The pressure pump according to claim 1, characterized in that: The first end is detachably connected to the liquid outlet; The second end is detachably connected to the liquid discharge pipeline.

9. The pressure pump according to claim 8, characterized in that: The liquid outlet is further provided with a pipe joint, which is used for detachably connecting with the first end.

10. A pressure pump control system, for controlling the pressure pump according to any one of claims 1 to 9, characterized in that: The pressure pump control system includes a controller, which is electrically connected to the driving mechanism. The controller is used 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 in which the liquid outlet and the discharge pipeline are connected, and a state in which the liquid outlet and the discharge pipeline are blocked.

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