Pulse pressure flusher

Abstract

The utility model discloses a pulse pressure flusher which comprises a main body, and a driving pipeline, a liquid inlet pipeline, a liquid discharge pipeline and a flushing part are arranged in the main body. Wherein the driving pipeline is arranged on the side wall of the liquid inlet pipeline and communicates with the liquid inlet pipeline, and a driving structure is arranged in the driving pipeline; one end of the liquid inlet pipeline and one end of the liquid outlet pipeline are communicated with the flushing part which is used for cleaning wounds; a flow guide column is arranged in the liquid inlet pipeline and arranged at the communication position of the liquid inlet pipeline and the driving pipeline. In the application, the driving structure can drive the liquid inlet pipeline to suck liquid and flow the liquid to the flushing part to realize flushing, and the liquid drainage pipeline can adsorb and remove the liquid after flushing; the flow guide column is arranged at the communicating position of the liquid inlet pipeline and the driving pipeline and can drive liquid in the liquid inlet pipeline to flow to the flushing part, the flow speed and pressure of liquid flushing are increased, the flushing efficiency is improved, and wound healing is promoted.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a pulse pressure irrigation device. Background Technology

[0002] In traditional surgical procedures, pulse pressure irrigation has become the standard method for rinsing in orthopedic and trauma surgeries internationally since its introduction. By releasing a high-speed water flow through a pulse pressure irrigation device, it can effectively remove more than 90% of microorganisms, contaminants, and necrotic tissue from the wound surface during debridement, thereby reducing cross-infection and other complications and promoting wound healing. Specific applications include orthopedic surgery—joint replacement.

[0003] Existing pulse pressure irrigation devices rely on built-in batteries to control the energy source and water flow for pulse pressure irrigation at fixed settings. This has the following drawbacks: 1. The built-in battery's energy decays during transportation and storage, often resulting in insufficient output power in clinical use, failing to meet actual irrigation needs; 2. Built-in batteries cause resource waste and environmental pollution, as these products are for single use only; 3. Limited applicability due to the number of settings, requiring specialized equipment for specific departments; 4. High cost, increasing the financial burden on patients; 5. Large size, causing inconvenience for medical staff during clinical use. Utility Model Content

[0004] The purpose of this application is to provide a pulse pressure flushing device to at least partially solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A pulse pressure flushing device includes a main body, wherein the main body is provided with a drive pipe, a liquid inlet pipe, a liquid outlet pipe and a flushing section;

[0007] The drive pipe is located on the side wall of the liquid inlet pipe and is connected to the liquid inlet pipe. The drive pipe is provided with a drive structure for driving the liquid inlet pipe to draw in liquid.

[0008] One end of the inlet pipe and the outlet pipe are respectively connected to the flushing section. The flushing section is used to clean the wound, and the outlet pipe is used to discharge the waste liquid after cleaning the wound.

[0009] The liquid inlet pipe is equipped with a flow guide column, which is located at the connection between the liquid inlet pipe and the drive pipe, and is used to drive the liquid in the liquid inlet pipe to flow to the flushing section.

[0010] Optionally, the guide column has an inclined surface on the side near the drive pipe, and the inclined surface faces the flushing section.

[0011] Optionally, the flushing section is funnel-shaped.

[0012] Optionally, a filter layer is provided at the opening of the rinsing section.

[0013] Optionally, the end of the inlet pipe away from the flushing section is connected to a liquid storage device.

[0014] Optionally, the end of the drain pipe away from the flushing section is connected to an external power system.

[0015] Optionally, the angle between the inclined plane and the axis of the liquid inlet pipe is 10°-45°.

[0016] Optionally, the drive structure includes a piston, a connecting rod, and a drive shaft. One end of the connecting rod is eccentrically connected to the drive shaft, and the other end of the connecting rod is connected to the piston. The drive shaft is connected to a power tool, and the rotation of the drive shaft can drive the piston to move within the drive pipe, thereby driving the liquid inlet pipe to draw liquid from the liquid storage device.

[0017] Optionally, at least one check valve is also provided in the liquid inlet pipe, and at least one check valve is located downstream of the guide column along the liquid flow direction in the liquid inlet pipe.

[0018] Optionally, the drive pipe is L-shaped, the connecting rod and the piston are both located at one end of the drive pipe that connects to the liquid inlet pipe, and the transmission shaft is located at the other end of the drive pipe.

[0019] Optionally, it also includes a valve tube, which includes an independent inlet and an outlet, the inlet and outlet being connected to the ends of the inlet pipe and the outlet pipe away from the flushing section, respectively.

[0020] Optionally, it also includes a connecting pipe, which has two branch pipes. One end of the two branch pipes is connected to the liquid inlet pipe and the liquid outlet pipe, respectively, and the other end of the two branch pipes is connected to the flushing section.

[0021] Optionally, one end of the branch pipe connected to the liquid inlet pipe is provided with a flushing nozzle, which extends into the flushing section.

[0022] Optionally, it also includes a first jacket, which is connected to both the valve tube and the main body.

[0023] Optionally, it also includes a second jacket, which is connected to both the connecting tube and the main body.

[0024] Optionally, the inner surface of the first jacket is provided with protrusions or grooves, and the outer surfaces of the main body and the valve tube are respectively provided with corresponding grooves or protrusions, so that the first jacket is engaged with the valve tube and the main body.

[0025] Optionally, the main body is provided with at least two snap-fit ​​arms, the second outer sleeve is limited within the at least two snap-fit ​​arms, and can move within the snap-fit ​​arms in a direction perpendicular to the axis of the liquid inlet pipe. The inner surface of the second outer sleeve is provided with a plurality of protrusions, the protrusions limiting at least a portion of the connecting pipe within the second outer sleeve.

[0026] Optionally, the side wall of the main body is provided with an elastic arm, the free end of which abuts against the inner surface of the second outer jacket, and the elastic arm is able to move in coordination with the second outer jacket.

[0027] In summary, the technical effects and advantages of this utility model are as follows: In this application, the driving structure drives the inlet pipe to draw in liquid and flow it to the flushing section to achieve flushing; the drain pipe is connected to an external power system, which can adsorb and remove the liquid after flushing; the guide column is located at the connection between the inlet pipe and the driving pipe, which can drive the liquid in the inlet pipe to flow to the flushing section, increase the flow rate and pressure of liquid flushing, improve the flushing efficiency, and promote wound healing. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is an exploded view of the pulse pressure flushing device in one embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the main body, the second outer jacket, and the connecting tube in one embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the pulse pressure flushing device in the water-absorbing state according to one embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the pulse pressure flusher in the pressurized water flushing state according to one embodiment of the present invention;

[0033] Figure 5 This is a half-sectional view of the pulse pressure flushing device in one embodiment of the present invention.

[0034] The components are as follows: 1. Main body; 2. Drive pipe; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. Flushing section; 6. Guide column; 7. Piston; 8. Connecting rod; 9. Drive shaft; 10. Valve pipe; 11. Connecting pipe; 12. Flushing nozzle; 13. First outer sleeve; 14. Second outer sleeve; 15. Snap-fit ​​arm; 16. Elastic arm; 17. Protrusion; 18. Limiting groove; 19. Filter layer; 20. One-way valve; 21. Inclined surface. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0039] This embodiment provides a pulse pressure flushing device, such as Figures 1-5As shown, the device includes a main body 1, which contains a drive pipe 2, a liquid inlet pipe 3, a liquid outlet pipe 4, and a flushing section 5. The drive pipe 2 is located on the side wall of the liquid inlet pipe 3 and is connected to it. The drive pipe 2 contains a drive structure for driving the liquid inlet pipe 3 to draw in liquid. The liquid inlet pipe 3 and the liquid outlet pipe 4 are independent of each other, with one end of each connected to the flushing section 5. The flushing section 5 is used to clean wounds, and the liquid outlet pipe 4 is used to discharge waste liquid after wound cleaning. A guide column 6 is located inside the liquid inlet pipe 3 at the connection point with the drive pipe 2, used to drive the liquid in the liquid inlet pipe 3 to flow towards the flushing section 5.

[0040] This utility model pulse pressure flushing device, such as Figure 5 As shown, the drive structure can drive the inlet pipe 3 to draw in liquid and flow it to the rinsing section 5 to rinse the wound. The drain pipe 4 is connected to an external power system to absorb and remove the rinsed liquid, promptly discharging the waste liquid after rinsing, reducing cross-infection and other complications, and promoting wound healing. The guide column 6 is located at the connection between the inlet pipe 3 and the drive pipe 2, and can drive the liquid in the inlet pipe 3 to flow to the rinsing section 5. Figures 3-5 (The middle arrow indicates the direction of liquid flow), increasing the flow rate and pressure of the liquid towards the rinsing section 5, thereby effectively removing microorganisms, contaminants and necrotic tissue from the wound and improving the rinsing efficiency.

[0041] In this pulse pressure irrigator, the end of the inlet pipe 3 away from the irrigation section 5 is connected to a liquid storage device (not shown in the figure), which stores liquid for irrigating wounds.

[0042] Optionally, the rinsing fluid is physiological saline.

[0043] An external power system (not shown in the figure) is connected to the end of the drain pipe 4 away from the flushing section 5. Thus, the external power system can absorb the waste liquid after flushing, and discharge the waste liquid through the drain pipe 4.

[0044] Optionally, the external power system uses a negative pressure adsorption pump, which is existing technology and will not be described in detail here.

[0045] This utility model pulse pressure flushing device, such as Figure 3 and Figure 4 As shown, the guide column 6 has an inclined surface 21 on the side near the drive pipe 2, facing the flushing section 5. Therefore, the inclined surface 21 can divide and guide the liquid, guiding a large amount of liquid along the inclined surface 21 towards the flushing section 5, increasing the flow velocity and pressure of the liquid towards the flushing section 5, and improving the flushing effect. In other words, due to the guiding effect of the guide column 6 on the liquid, the same flushing effect can be achieved with reduced external power input.

[0046] Preferably, the angle between the inclined plane 21 and the axis of the liquid inlet pipe 3 is 10°-45°. This allows it to separate and guide the liquid.

[0047] Optionally, the end of the guide column 6 furthest from the drive pipe 2 is connected to the liquid inlet pipe 3, while the end of the guide column 6 closest to the drive pipe 2 is spaced apart from the liquid inlet pipe 3. Thus, the connection of one end of the guide column 6 to the liquid inlet pipe 3 allows the guide column 6 to withstand the impact of the liquid without moving or bending; the space between the other end of the guide column 6 and the liquid inlet pipe 3 allows the drive structure to drive the liquid inlet pipe 3 to draw liquid from the storage device, and the liquid drawn into the liquid inlet pipe 3 bypasses the guide column 6 without interference.

[0048] This utility model pulse pressure flushing device, such as Figure 1 , Figure 3 and Figure 4 As shown, the drive structure includes a piston 7, a connecting rod 8, and a drive shaft 9. One end of the connecting rod 8 is eccentrically connected to the drive shaft 9, and the other end of the connecting rod 8 is connected to the piston 7. The drive shaft 9 is connected to a power tool (not shown in the figure). Rotation of the drive shaft 9 can drive the piston 7 to move within the drive pipe 2, thereby driving the liquid inlet pipe 3 to draw liquid from the liquid storage device.

[0049] Specifically, the power tool can be an external power drill or other power system used to drive the drive shaft 9 to rotate, which in turn drives the piston 7 to reciprocate up and down. Power drills and other power systems are existing technology and will not be described in detail here.

[0050] Optionally, such as Figure 1 , Figure 3 and Figure 4 As shown, the drive pipe 2 is L-shaped. The connecting rod 8 and piston 7 are both located at one end of the drive pipe 2 that connects to the liquid inlet pipe 3, and the drive shaft 9 is located at the other end of the drive pipe 2. Thus, one end of the connecting rod 8 is eccentrically connected to the drive shaft 9, and the rotation of the drive shaft 9 can drive the connecting rod 8 of the piston 7 to move up and down.

[0051] The pulse pressure flushing device of this utility model, the movement of the driving structure in the driving pipe 2 and the driving flushing process are as follows:

[0052] The assembled drive shaft 9, connecting rod 8, and piston 7 are installed into the drive pipe 2 of the main body 1. The power tool is started, driving the drive shaft 9 to rotate. The rotation of the drive shaft 9 causes the connecting rod 8 to move up and down reciprocally, which in turn causes the piston 7, connected to the connecting rod 8, to move up and down reciprocally within the drive pipe 2. Figure 3 As shown, when piston 7 moves upward, the pressure inside drive pipe 2 decreases, and under the action of atmospheric pressure, the liquid in the storage device is drawn into inlet pipe 3 and drive pipe 2. Figure 4As shown, when the piston 7 moves downward, the liquid in the drive pipe 2 is squeezed by the piston 7, and a large amount of liquid is guided along the inclined surface 21 of the guide column 6 and flows to the flushing section 5. With the rotation of the drive shaft 9 and the reciprocating motion of the piston 7, the liquid inlet pipe 3 continuously draws liquid from the liquid storage device, and the drawn liquid continuously flows to the flushing section 5 to form a "pulse" phenomenon, thereby achieving the purpose of flushing the surgical wound.

[0053] This utility model pulse pressure flushing device, such as Figure 1 , Figure 3 and Figure 4 As shown, at least one-way valve 20 is also provided in the inlet pipe 3, and the at least one-way valve 20 is located downstream of the guide column 6 along the direction of liquid flow in the inlet pipe 3. Thus, the one-way valve 20 can control the direction of liquid flow in the inlet pipe 3, preventing the waste liquid after the flushing section 5 flushes the wound from flowing back into the inlet pipe 3.

[0054] Optionally, a one-way valve 20 can be installed upstream of the guide column 6 along the liquid flow direction in the inlet pipe 3. After the water flow pushed downward by the piston 7 is divided and guided by the inclined surface 21 of the guide column 6, most of the liquid is squeezed towards the flushing section 5, but a small amount of liquid still flows back along the inlet pipe 3. Installing a one-way valve 20 upstream of the guide column 6 along the liquid flow direction in the inlet pipe 3 can prevent the liquid from flowing back into the storage device and can also further promote the flow of liquid in the inlet pipe 3 towards the flushing section 5.

[0055] Of course, it is not necessary to install a one-way valve 20 upstream of the liquid flow direction in the inlet pipe 3 along the guide column 6, and it can be omitted. A small amount of liquid backflow has little impact on the performance of the flusher. Compared with traditional flushers that must have one-way valves 20 both upstream and downstream of the drive structure in the liquid flow direction, the guide column 6 allows a large amount of liquid to flow to the flushing section 5, making the installation of a one-way valve 20 upstream of the liquid flow direction unnecessary and reducing the number of one-way valves 20.

[0056] The pulse pressure irrigator of this invention has an irrigating section 5 that is funnel-shaped. The irrigating section 5 is positioned facing the wound to which the irrigating solution is to be applied. As a result, the funnel-shaped irrigating section 5 causes the liquid to radiate out in an umbrella-like pattern, resulting in a large irrigating area and high efficiency. At the same time, the funnel-shaped irrigating section 5 can collect the waste liquid from the irrigation and return it to the drainage channel 4.

[0057] Preferably, the opening of the rinsing section 5 is provided with a filter layer 19, which can filter and collect particulate matter, prevent instrument blockage during surgery and collect and utilize bone particles, and effectively prevent dirt from entering the drain pipe 4 and causing blockage.

[0058] The pulse pressure flushing device of this utility model, such as Figure 1As shown, it also includes a valve pipe 10, which has independent inlet and outlet ports. The inlet and outlet ports are respectively connected to the ends of the inlet pipe 3 and the outlet pipe 4 away from the rinsing section 5. Thus, the inlet pipe 3 is connected to the storage device through the inlet port to draw in liquid; the outlet pipe 4 is connected to an external negative pressure pump through the outlet port to absorb and remove waste liquid after rinsing in real time, and is used to discharge the wound cleaning and rinsing solution and the washed-off debris.

[0059] The pulse pressure flushing device of this utility model, such as Figure 1 As shown, it also includes a first outer sleeve 13, which is connected to both the valve pipe 10 and the main body 1. Thus, by providing the first outer sleeve 13, a detachable connection between the valve pipe 10 and the main body 1 can be achieved.

[0060] Specifically, the inner surface of the first outer sleeve 13 is provided with protrusions or grooves, and the outer surfaces of the main body 1 and the valve tube 10 are respectively provided with corresponding grooves or protrusions, so that the first outer sleeve 13 is engaged with the valve tube 10 and the main body 1.

[0061] Optionally, the first jacket 13 is a two-part design, which improves the convenience of snap-fit.

[0062] The process of engaging the main body 1, valve tube 10 and first outer sleeve 13 is as follows: the inlet of the liquid tube corresponds to the inlet pipe 3, the outlet of the liquid tube corresponds to the outlet pipe 4, the valve tube 10 is inserted into the main body 1, and then the two halves of the first outer sleeve 13 are put over the main body 1 and the valve tube 10. At this time, the protrusion is inserted into the groove to complete the locking.

[0063] The pulse pressure flushing device of this utility model, such as Figure 1 and Figure 2 As shown, it also includes a connecting pipe 11, which has two branch pipes. One end of each branch pipe is connected to the inlet pipe 3 and the outlet pipe 4, respectively, and the other end of each branch pipe is connected to the rinsing section 5. Thus, the connecting pipe 11 connects the main body 1 and the rinsing section 5, so that one end of the inlet pipe 3 and the outlet pipe 4 are connected and converged in the rinsing section 5 through the connecting pipe 11.

[0064] Optionally, a flushing nozzle 12 is provided at one end of a branch pipe connected to the liquid inlet pipe 3, and the flushing nozzle 12 extends into the flushing section 5. Thus, liquid flows from the flushing nozzle 12 to the flushing section 5.

[0065] The pulse pressure flushing device of this utility model, such as Figure 1 and Figure 2 As shown, it also includes a second outer sleeve 14, which is connected to both the connecting pipe 11 and the main body 1. Thus, by providing the second outer sleeve 14, a detachable connection between the connecting pipe 11 and the main body 1 can be achieved.

[0066] Specifically, the main body 1 is provided with at least two snap-fit ​​arms 15, and the second outer sleeve 14 is confined within the at least two snap-fit ​​arms 15 and can move within the snap-fit ​​arms 15 in a direction perpendicular to the axis of the liquid inlet pipe 3. The inner surface of the second outer sleeve 14 is provided with a plurality of protrusions 17, which confine at least part of the connecting pipe 11 within the second outer sleeve 14. This improves the convenience and stability of the connection between the main body 1 and the connecting pipe 11.

[0067] Furthermore, the side wall of the main body 1 is provided with an elastic arm 16, the free end of which abuts against the inner surface of the second outer sleeve 14, allowing the elastic arm 16 to move in conjunction with the second outer sleeve 14. Thus, when the second outer sleeve 14 is pushed, it presses against the elastic arm 16 and deforms it, facilitating the insertion of the connecting tube 11 into the main body 1 and the second outer sleeve 14. After releasing the second outer sleeve 14, the elastic arm 16 causes the second outer sleeve 14 to spring back, pressing and limiting the connecting tube 11 within the second outer sleeve 14. Pushing the second outer sleeve 14 again unlocks the connection between the main body 1 and the connecting tube 11, facilitating the replacement of the connecting tube 11 and making the operation convenient.

[0068] In other embodiments, the elastic arm 16 may be replaced with other elastic structures, such as springs.

[0069] Furthermore, the connecting tube 11 is provided with a limiting groove 18 corresponding to the protrusion 17. When the connecting tube 11 is inserted into the main body 1 by pressing the second outer sleeve 14, the limiting groove 18 can move along the protrusion 17, and the protrusion 17 will not interfere with the insertion of the connecting tube 11. After the connecting tube 11 is inserted into the second outer sleeve 14, the second outer sleeve 14 is released, and the second outer sleeve 14 returns to its original position under the rebound force of the elastic arm 16. The protrusion 17 moves accordingly and presses against the end face of the connecting tube 11 to prevent the connecting tube 11 from coming out. Thus, the design of the protrusion 17 not only does not interfere with the insertion of the second outer sleeve 14, but also plays a role in pressing and limiting the insertion of the second outer sleeve 14, limiting at least part of the connecting tube 11 within the second outer sleeve 14, thereby realizing the connection between the main body 1 and the rinsing part 5.

[0070] The working process of this pulse pressure irrigation device is as follows: An electric tool drives the drive shaft 9 to rotate, which in turn drives the connecting rod 8 and piston 7 to reciprocate up and down within the drive pipe 2. When piston 7 moves upward, it drives the inlet pipe 3 to draw liquid from the storage device; when piston 7 moves downward, it drives the liquid to flow. Due to the guiding effect of the inclined surface 21 of the guide column 6 within the inlet pipe 3, a large amount of liquid flows towards the irrigation section 5. The continuous reciprocating motion of piston 7 creates a "pulse" phenomenon during the suction and expulsion of liquid, achieving the purpose of rinsing the surgical wound. Simultaneously, an external negative pressure pump connected to one end of the drain pipe 4 is opened, and the rinsed liquid is discharged through the drain pipe 4. When it is necessary to clean the filter residue in the irrigation section 5, the second outer sleeve 14 is pushed to remove the connecting pipe 11 from the main body 1 for cleaning.

[0071] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pulse pressure flusher characterized by: The system includes a main body, which contains a drive pipe, a liquid inlet pipe, a liquid outlet pipe, and a flushing section. The drive pipe is located on the side wall of the liquid inlet pipe and is connected to the liquid inlet pipe. The drive pipe is provided with a drive structure for driving the liquid inlet pipe to draw in liquid. One end of the inlet pipe and the outlet pipe are respectively connected to the flushing section. The flushing section is used to clean the wound, and the outlet pipe is used to discharge the waste liquid after cleaning the wound. The liquid inlet pipe is equipped with a flow guide column, which is located at the connection between the liquid inlet pipe and the drive pipe, and is used to drive the liquid in the liquid inlet pipe to flow to the flushing section.

2. The pulse pressure flush of claim 1, wherein, The guide column has an inclined surface on the side near the drive pipe, and the inclined surface faces the flushing section; And / or, the flushing section is funnel-shaped; And / or, a filter layer is provided at the opening of the rinsing section; And / or, the end of the inlet pipe away from the flushing section is connected to a liquid storage device; And / or, the end of the drain pipe away from the flushing section is connected to an external power system.

3. The pulse pressure washer of claim 2, wherein, The angle between the inclined plane and the axis of the liquid inlet pipe is 10°-45°.

4. The pulse pressure washer of claim 1, wherein, The drive structure includes a piston, a connecting rod, and a drive shaft. One end of the connecting rod is eccentrically connected to the drive shaft, and the other end of the connecting rod is connected to the piston. The drive shaft is connected to a power tool. Rotation of the drive shaft can drive the piston to move within the drive pipe, thereby driving the liquid inlet pipe to draw liquid from the liquid storage device. And / or, the inlet pipe is further provided with at least one check valve, and at least one check valve is located downstream of the flow guide column along the liquid flow direction in the inlet pipe.

5. The pulse pressure washer of claim 4, wherein, The drive pipe is L-shaped, the connecting rod and the piston are both located at one end of the drive pipe that connects to the liquid inlet pipe, and the transmission shaft is located at the other end of the drive pipe.

6. The pulse pressure washer of claim 1, wherein, It also includes a valve tube, which has an independent inlet and an outlet, and the inlet and outlet are respectively connected to the end of the inlet pipe and the outlet pipe away from the flushing part; And / or, it also includes a connecting pipe, the connecting pipe having two branch pipes, one end of the two branch pipes being connected to the liquid inlet pipe and the liquid outlet pipe respectively, and the other end of the two branch pipes being connected to the flushing section respectively.

7. The pulse pressure washer of claim 6, wherein, One end of the branch pipe connected to the liquid inlet pipe is provided with a flushing nozzle, which extends into the flushing section.

8. The pulse pressure washer of claim 6, wherein, It also includes a first outer sleeve, which is connected to the valve tube and the main body respectively; And / or, it also includes a second jacket, which is connected to the connecting tube and the main body respectively.

9. The pulse pressure washer of claim 8, wherein, The inner surface of the first jacket is provided with protrusions or grooves, and the outer surfaces of the main body and the valve tube are respectively provided with corresponding grooves or protrusions, so that the first jacket is engaged with the valve tube and the main body; And / or, the main body is provided with at least two snap-fit ​​arms, the second outer sleeve is limited within at least two of the snap-fit ​​arms and is movable within the snap-fit ​​arms in a direction perpendicular to the axis of the inlet pipe, and the inner surface of the second outer sleeve is provided with a plurality of protrusions, the protrusions limiting at least a portion of the connecting pipe within the second outer sleeve.

10. The pulse pressure washer of claim 9, wherein, The main body has an elastic arm on its side wall. The free end of the elastic arm abuts against the inner surface of the second outer jacket. The elastic arm can move in coordination with the second outer jacket.

Images