Pressing type high-pressure pump with concentrated water pressure regulating function

Abstract

The utility model relates to the technical field of drinking water treatment, and discloses a pressing type high-pressure pump with a concentrated water pressure regulating function, which comprises a handle assembly, a piston assembly, a pressure regulating assembly and a pump body, the pressure regulating assembly comprises a pressure regulating valve sleeve, a pressure regulating valve body, a pressure regulating valve element, a pressure regulating spring and a pressure regulating screw. The pressure regulating assembly is provided with a concentrated water inlet channel and a concentrated water discharging channel, the pressure regulating valve element and the pressure regulating spring are located in the discharging channel, the pressure regulating screw presses the pressure regulating valve element and the pressure regulating spring in the discharging channel, the pressure regulating screw in the pressure regulating assembly is in threaded fit with the pressure regulating valve body, and the pressure regulating valve element and the pressure regulating spring are installed in the pressure regulating valve body. The compression amount of the pressure adjusting spring is changed by screwing the pressure adjusting screw. A pressing type handle structure is adopted for driving, so that the driving force of the device is greatly reduced; the pressure regulating assembly is integrally designed, space can be fully utilized, and the structure is simple and ingenious; the water purifier adopting the pressing type high-pressure pump is high in water production efficiency and high in portability.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of drinking water treatment, and particularly relates to a press type high-pressure pump with concentrated water pressure regulating function. BACKGROUND

[0002] Water is the origin of life and is one of the basic needs of human life and production. Therefore, combining convenient water treatment technology and device with water purification process is an important means to ensure the safety of drinking water in emergency situations.

[0003] In order to meet the basic technical requirements of portable water purifiers such as high efficiency, lightness, labor saving, firmness, durability and portability, membrane method has become the mainstream technology. There are related representative water purification devices disclosed at home and abroad as follows:

[0004] The Chinese invention patent with the publication number CN 118324254A discloses a "reverse osmosis water purification device", which comprises a rack, a water purification shell fixedly connected to the rack, a first fixing frame fixedly connected in the water purification shell, a reverse osmosis membrane fixedly connected between the first fixing frame and the water purification shell, a water purification pipe fixedly connected to the first fixing frame, the side of the reverse osmosis membrane away from the first fixing frame being in communication with the water purification pipe, a concentrated water pipe fixedly connected to the first fixing frame and in communication, a flow limiting frame fixedly connected in the concentrated water pipe, a flow limiting plate rotatably connected to the flow limiting frame, a monitoring mechanism for detecting the flow of the water purification pipe arranged on the water purification pipe, and an adjusting mechanism for adjusting the pressure in the water purification shell arranged on the concentrated water pipe. The flow area of the concentrated water pipe is changed through the cooperation of the flow limiting plate and the flow limiting frame, so as to adjust the pressure in the water purification shell.

[0005] The American invention patent with the publication number US19980011386A discloses a compact portable handheld water purification filter, which comprises a shell, a handle, a pump, an activated carbon filter and a ceramic filter arranged concentrically around the pump. The device is compact in design, but does not have a pressure regulating device, and the water production is low and the water recovery rate is not high.

[0006] The Chinese invention patent with the publication number CN105804962A discloses a "pressure-adjustable bidirectional manual pump", which discloses a one-way water outlet mechanism arranged at the water inlet end, and a water outlet spring is further arranged in the one-way water outlet mechanism to adjust the pressure, so that the reverse osmosis membrane assembly is balanced in force, the damage to the reverse osmosis membrane is reduced, and the water quality is improved.

[0007] The utility model discloses a "outdoor emergency water purification device" discloses a "outdoor emergency water purification device", which adopts a pull-out type reverse osmosis water purification device. The device can effectively remove harmful substances in water. The device is pressurized by a pull-out plunger, which is labor-intensive. In addition, due to the limitation of the recovery rate of the reverse osmosis water treatment process, the device cannot adjust the pressure, and the water production cannot be controlled, resulting in a small amount of water production.

[0008] In summary, the current portable water purifier is difficult to achieve miniaturization, light weight and labor-saving efficiency under the requirements of complex water source water quality and treatment process. The concentrated water pressure regulating mechanism is usually arranged at both ends of the membrane shell, which increases the size of the device. In addition, for portable drinking water treatment devices for complex water sources such as seawater and brackish water, reverse osmosis treatment process is adopted. The existing invention has large driving force and low water production efficiency. Therefore, the invention of a press-type high-pressure pump with concentrated water pressure regulating function, which is labor-saving, efficient, small in size, reliable in structure and applicable to various water source water quality and water treatment processes, is of great significance to the development and design of portable water purifiers. Utility model content

[0009] Therefore, the present application proposes a novel press-type high-pressure pump with concentrated water pressure regulating function, which can solve at least part of the above problems. By a specific pressing mechanism, the required driving force during operation is greatly reduced. A adjustable concentrated water discharge valve is designed. According to different water source types, different water treatment processes (ultrafiltration, nanofiltration, reverse osmosis, etc.), recovery rate, water production, and water quality requirements, the concentrated water discharge pressure is adjusted, so that it can be applied to different water treatment processes and meet the water production requirements.

[0010] The technical scheme adopted by the present application to achieve its purpose is as follows:

[0011] The present application proposes a press-type high-pressure pump with concentrated water pressure regulating function, characterized in that it comprises a handle assembly, a piston assembly, a pressure regulating assembly and a pump body. The pressure regulating assembly comprises a pressure regulating valve sleeve, a pressure regulating valve body, a pressure regulating valve core, a pressure regulating spring and a pressure regulating screw. The pressure regulating assembly is provided with a concentrated water inlet channel and a concentrated water discharge channel. The pressure regulating valve core and the pressure regulating spring are located in the discharge channel. The pressure regulating screw compresses the pressure regulating valve core and the pressure regulating spring in the discharge channel. The pressure regulating screw in the pressure regulating assembly is threadedly connected with the pressure regulating valve body. By screwing the pressure regulating screw, the depth can be adjusted to change the compression amount of the spring, i.e. the spring force, and adjust the pressure limit of the valve.

[0012] The adjusting screw in the pressure regulating assembly is threadedly connected with the pressure regulating valve body. By screwing the adjusting screw, the depth can be adjusted to change the compression amount of the spring, i.e. the spring force, and adjust the pressure limit of the valve.

[0013] As preferred, the handle assembly is connected with the piston assembly and the pressure regulating assembly through a pin shaft, the fixed fulcrum of the handle assembly is located at the end of the pressure regulating assembly, and the handle assembly drives the piston rod to reciprocate when pressed.

[0014] As preferred, the piston assembly and the pressure regulating assembly are installed in the pump body and fastened through the end screw thread.

[0015] As preferred, the pump body is provided with a water inlet valve, and the water inlet valve comprises a spring and a water inlet valve core.

[0016] As preferred, the piston cavity is provided with a sealing ring at the water outlet flow channel of the pump body.

[0017] As preferred, the ratio of the distance K between the piston rod and the fulcrum to the distance L between the force receiving midpoint of the handle and the fulcrum is less than 1:5.

[0018] According to the torque balance principle, the handle assembly can greatly reduce the driving force required for actual operation. Assuming that the osmotic pressure required by the drinking water purification process is P, the piston needs to provide a thrust T, the distance K between the piston rod and the fulcrum, and the distance L between the force receiving midpoint of the handle and the fulcrum, the theoretical required pressing force is:

[0019]

[0020] The ratio of K to L in the present application is less than 1:5, so the driving force can be reduced by at least 80%.

[0021] As preferred, the pressing type high pressure pump can be applied to a water purifier, and the water purifier further comprises a membrane assembly, the membrane assembly is screw-connected with the pump body, and the pressure regulating assembly is located between the membrane assembly and the piston assembly.

[0022] As preferred, the membrane assembly is installed with a reverse osmosis membrane element, a nanofiltration membrane element or an ultrafiltration membrane element.

[0023] As preferred, the water purifier is used for treating surface water, brackish water or seawater, the pressure regulating assembly 3 of the water purifier for treating surface water is adjusted to 0.1-1 MPa, the pressure regulating assembly 3 of the water purifier for treating brackish water is adjusted to 1-4 MPa, and the pressure regulating assembly 3 of the water purifier for treating seawater is adjusted to 4-8 MPa. The water quality meets the Drinking Water Purification Water Quality Standard (CJ 94-2005) and can be used as drinking water for field activities and emergency rescue.

[0024] The press type handle is supported by a pin shaft at the pressure regulating assembly, when the handle is pulled upward, the piston moves to the left, the water inlet one-way valve core in the pump body is opened, and the raw water enters the piston cavity; when the handle is pressed downward, the water in the piston cavity is pressed into the membrane assembly; the water outlet flow channel of the pump body is connected with the water inlet flow channel of the membrane assembly, the concentrated water flow channel of the membrane assembly is connected with the annular water inlet flow channel of the pressure regulating assembly, the annular water inlet flow channel is connected with the hole flow channel, and is connected with the pressure regulating valve core, finally, the water in the membrane assembly is introduced into the pressure regulating valve core in the pressure regulating assembly, and the pressure regulating valve core is affected by the elastic force of the spring, and the pressure limit value when the valve is opened is equivalent to the size of the elastic force.

[0025] Preferably, when the water pressure in the membrane assembly is greater than the pressure limit value set by the pressure regulating assembly, the pressure regulating valve core is opened by the water pressure, and the concentrated water in the membrane assembly is finally discharged from the concentrated water discharge flow channel of the pump body through the gap opened by the pressure regulating valve core.

[0026] The press type high-pressure pump can greatly reduce the driving force of operation, so that the recovery rate of the water treatment process and the water production efficiency are improved by increasing the pressure through the pressure regulating assembly and increasing the driving force by a small amount.

[0027] Therefore, the application has the following beneficial effects:

[0028] The press type handle high-pressure pump design greatly reduces the driving force required during actual operation.

[0029] The pressure regulating assembly is designed in an integrated manner, which can fully utilize the space between the membrane assembly and the piston assembly, and has a simple and ingenious structure, which changes the size limitation and space waste caused by the force point distance of the pressure regulating valve and the pressure rod support point at both ends of the traditional portable water purifier membrane assembly, greatly reduces the length of the device, and has compact structure and high integration of each component, improves the portability, has low failure rate and is easy to maintain.

[0030] The pressure limit value of the pressure regulating valve can be adjusted through the pressure regulating assembly, the pressure in the membrane assembly during water purification is controlled, the water production desalination rate and recovery rate of the water treatment process are increased, and the water production flow rate is increased by about 20-60%.

[0031] Since the press type high-pressure pump can provide high-pressure water inlet and control the concentrated water discharge pressure, the handle assembly and the piston assembly design can provide high-pressure water inlet, and the pressure regulating assembly can control the concentrated water outlet pressure, so that the membrane assembly is balanced, the damage to the membrane is reduced, and the water quality is improved, therefore, the press type high-pressure pump provided by the application is suitable for various membrane water treatment processes with different pressures, including reverse osmosis membranes, ultrafiltration membranes, nanofiltration membranes, etc. BRIEF DESCRIPTION OF DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to limit the application thereto. The same reference numerals in different drawings denote the same or similar components. In the drawings:

[0033] Figure 1 is a schematic diagram of the principle of the pressurized high-pressure pump in the embodiment of the present application;

[0034] Figure 2 is a schematic diagram of the cross-section of the pressurized high-pressure pump in the embodiment of the present application;

[0035] Figure 3 is a schematic diagram of the cross-section of the pressure regulating assembly in the embodiment of the present application;

[0036] Figure 4 is a schematic diagram of the calculation of the driving force of the handle in the embodiment of the present application;

[0037] Figure 5 is a schematic diagram of the water suction process of the water purifier in the embodiment of the present application;

[0038] Figure 6 is a schematic diagram of the pressurized water purification process of the water purifier in the embodiment of the present application;

[0039] Figure 7 is a schematic diagram of the explosion of the water purifier in the embodiment of the present application.

[0040] In the figure: 1. handle assembly, 2. piston assembly, 2-1. piston rod, 2-2. piston cover, 2-3. piston end cover, 2-4. piston, 2-5. graphite ring, 2-6. sealing ring, 2-7. piston sleeve, 3. pressure regulating assembly, 3-1. pressure regulating valve sleeve, 3-2. pressure regulating valve body, 3-3. pressure regulating valve core, 3-4. pressure regulating spring, 3-5. pressure regulating screw, 4. membrane assembly, 5. pump body, 5-1. spring, 5-2. water inlet valve core, 5-3. one-way valve, 5-4. water outlet flow channel, 5-5. concentrated water discharge flow channel. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thoroughly and completely understood, and will fully convey the scope of the application to those skilled in the art.

[0042] The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0043] The embodiment proposes a new type of pressing high-pressure pump, which can provide a stable high-pressure filtering environment for the membrane module. The principle is as follows Figure 1 The raw water is sucked into the cavity by the piston assembly, and then the raw water is pressed into the membrane module for membrane filtration by the plunger. The concentrated water generated by the membrane filtration is discharged through the concentrated water pressure regulating assembly. The pressure regulating assembly is an integrated concentrated water pressure regulating valve independent of the membrane module, which is located in the membrane concentrated water discharge section. When the water pressure in the membrane module is higher than the pressure controlled by the pressure regulating assembly, the concentrated water can be discharged from the membrane module by the high pressure provided by the piston assembly. The pressing high-pressure pump integrates the piston assembly for providing high-pressure water and the pressure regulating assembly for controlling pressure, which can provide a stable high-pressure filtering environment for the membrane module, and significantly improves the water production efficiency of the membrane module.

[0044] With reference to Figures 2-3 The embodiment proposes a pressing high-pressure pump with concentrated water pressure regulating function, which comprises a handle assembly 1, a piston assembly 2, a pressure regulating assembly 3 and a pump body 5. The handle assembly 1 is connected to the piston assembly 2 and the pressure regulating assembly 3 through a pin shaft, and drives the piston rod 2-1 to reciprocate when pressed. The piston assembly 2 and the pressure regulating assembly 3 are installed in the pump body 5. The handle assembly 1, the piston assembly 2, the pressure regulating assembly 3 and the pump body 5 together constitute the pressing high-pressure pump. The pump body 5 is connected to the membrane module 4. The pressure regulating assembly 3 comprises a pressure regulating valve sleeve 3-1, a pressure regulating valve body 3-2, a pressure regulating valve core 3-3, a pressure regulating spring 3-4 and a pressure regulating screw 3-5. The pump body 5 is provided with a water inlet valve, which mainly comprises a spring 5-1, a water inlet valve core 5-2 and a one-way valve 5-3.

[0045] Specifically, the piston assembly 2 and the pressure regulating assembly 3 are installed in the pump body 5 and are fastened and installed through end threads.

[0046] Specifically, the water outlet flow channel 5-4 of the pump body 5 is connected to the water inlet flow channel 4-1 of the membrane module 4, the concentrated water flow channel 4-2 of the membrane module is connected to the annular water inlet flow channel 3-6 of the pressure regulating assembly, the annular water inlet flow channel 3-6 is connected to the hole flow channel 3-7, and the hole flow channel 3-7 is connected to the pressure regulating valve core 3-3. Finally, the water in the membrane module 4 can be introduced into the pressure regulating valve core 3-3 in the pressure regulating assembly 3. The pressure regulating valve core 3-3 is subjected to the elastic force of the spring 3-4, and the pressure limit when the pressure regulating valve core 3-3 is opened is equivalent to the size of the elastic force.

[0047] Specifically, the pressure regulating process of the pressure regulating assembly, the adjusting screw 3-5 in the pressure regulating assembly 3 is threadedly connected to the pressure regulating assembly 3. By adjusting the depth of the adjusting screw 3-5, the compression amount of the spring 3-4, i.e. the size of the elastic force, can be changed, and the pressure limit of the valve can be adjusted.

[0048] Specifically, when the water pressure in the membrane module is greater than the pressure limit set by the pressure regulating assembly 3, the pressure regulating valve core 3-3 is opened by the water pressure, and the concentrated water in the membrane module 4 is finally discharged from the concentrated water discharge flow channel 5-5 of the pump body 5 through the gap opened by the pressure regulating valve core 3-3.

[0049] In some embodiments, as shown in Figure 4 The driving force calculation diagram of the handle is shown, and the handle assembly 1 can greatly reduce the driving force required for actual operation according to the principle of torque balance. Assuming that the required osmotic pressure of the water treatment process is P, the piston needs to provide a pushing force T, the distance K between the piston rod and the fulcrum, and the distance L between the midpoint of the force of the handle and the fulcrum, then the theoretically required pressing force is:

[0050]

[0051] The ratio of K to L in the present application is less than 1:5, so the driving force can be reduced by at least 80%.

[0052] In some embodiments, as shown in Figure 5 and Figure 6 The working process of the pressing high-pressure pump is provided, including the water suction process of the pressing high-pressure pump and the pressurized water purification process of the pressing high-pressure pump.

[0053] As shown in Figure 5 The pressing handle assembly 1 is supported by the pin shaft at the pressure regulating assembly 3. When the handle assembly 1 is stretched upward, the piston moves to the left side, the water inlet one-way valve core 5-2 of the pump body 5 is opened, and the raw water enters the piston cavity.

[0054] As shown in Figure 6 When the handle is pressed downward, the piston moves to the right side, and the water in the piston cavity is pressed into the membrane assembly 4. The concentrated water discharged by the membrane treatment is finally discharged from the pump body 5 through the pressure regulating assembly 3.

[0055] In some embodiments, as shown in Figure 7 The pressing high-pressure pump of the present application is used in a water purifier for drinking water purification treatment. The water purifier also includes a membrane assembly, the membrane assembly is screw-connected with the pump body, and the pressure regulating assembly is located between the membrane assembly and the piston assembly.

[0056] As a preferred, the membrane assembly is installed with a reverse osmosis membrane element or a nanofiltration membrane element or an ultrafiltration membrane element.

[0057] Specifically, the water purifier is used for treating surface water, brackish water or seawater. When the water purifier is used for treating surface water, the pressure of the pressure regulating assembly 3 is adjusted to 0.1-1 MPa. When the water purifier is used for treating brackish water, the pressure of the pressure regulating assembly 3 is adjusted to 1-4 MPa. When the water purifier is used for treating seawater, the pressure of the pressure regulating assembly 3 is adjusted to 4-8 MPa. The water quality meets the "Drinking Water Purification Water Quality Standard" (CJ 94-2005), and can be used as drinking water for field activities and emergency rescue.

[0058] The embodiments of the present application are further described below through specific embodiments. Example One

[0059] The drinking water purification treatment purifier adopts the pressing high-pressure pump and the reverse osmosis membrane assembly combined according to the present application, the pressure regulating assembly in the pressing high-pressure pump is adjusted to the control pressure according to the salt content, at the ambient temperature of 25 DEG C, the pressing frequency is 60 times / min, the simulated salt content different brackish water is used for the water inlet, the device is stably operated for not less than 5 min, the water production and the salt content of the produced water are measured, the continuous measurement is carried out for 3 times, the average value is taken, and the specific data are described in Table 1. As shown in the table, the water production of the device of the present application is about 10.88 L / h, and the desalination rate can reach 97.3%.

[0060] Table 1

[0061] Example Two

[0062] As shown in Figure 5 and Figure 6 , the present application is designed with a simple and effective pressure regulating valve mechanism at the pressure regulating assembly, which is used to adjust the concentrated water pressure, to ensure sufficient water production and water quality; the working process of the pressure regulating valve is as follows: when the handle assembly is pulled up, the piston assembly sucks raw water into the piston cavity, at this time, the air on the other side of the piston is extruded and discharged, to ensure the smooth movement of the piston; when the handle assembly is pressed down, the raw water enters the reverse osmosis membrane, the concentrated water enters the pressure regulating assembly through the flow channel, when the concentrated water pressure continuously rises until it exceeds the set value of the pressure regulating valve, the pressure regulating valve core is opened, and the concentrated water is discharged through the concentrated water outlet. The pressure regulating assembly is connected with the pump body as a whole, without occupying additional space, with high integration, simple structure, low failure probability and convenient maintenance. Example Three

[0063] The drinking water purification treatment purifier adopts the pressing high-pressure pump and the nanofiltration membrane assembly according to the present application, the pressure regulating assembly in the pressing high-pressure pump is adjusted to the control pressure 0.1~1 MPa, at the ambient temperature of 25 DEG C, the pressing frequency is 60 times / min, the surface water is used for the water inlet, the device is stably operated for not less than 5 min, the water production and the water quality of the device are measured, the continuous measurement is carried out for 3 times, the average value is taken, and it can be known that the water production of the device of the present application meets the water quality requirements of the “Drinking Water Quality Standard” (GB 5749-2006). Example Four

[0064] The drinking water purification treatment water purifier adopts the pressing type high pressure pump and the ultrafiltration membrane assembly of the application, adjusts the pressure regulating assembly in the pressing type high pressure pump to the control pressure 0.1~1MPa, at the ambient temperature 25℃, the pressing frequency 60 times / minute, the water inlet adopts the clear spring, the stable operation device is not less than 5min, measures the water yield and the water quality of the device, measures continuously 3 times, takes the average value, can know that the device removes most of the bacteria, inorganic salt, suspended matter and mineral salt in seawater, and the produced water has pure water quality, and the produced water meets the water quality requirements of "Drinking Water Quality Standard" (GB 5749-2006). Example five

[0065] The drinking water purification treatment water purifier adopts the pressing type high pressure pump and the reverse osmosis membrane assembly of the application, adjusts the pressure regulating assembly in the pressing type high pressure pump to the control pressure 4~8MPa, at the ambient temperature 25℃, the pressing frequency 60 times / minute, the water inlet adopts seawater, the stable operation device is not less than 5min, measures the water yield and the water quality of the device, measures continuously 3 times, takes the average value, can know that the device produced water meets the water quality requirements of "Drinking Water Quality Standard" (GB 5749-2006). Comparative example one

[0066] After removing the pressure regulating assembly in the water purifier of the application example one, a conventional back pressure valve is used, at the ambient temperature 25℃, the pressing frequency 60 times / minute, the water inlet adopts the same salt content as example one bitter brackish water, the stable operation device is not less than 5min, measures the water yield and the salt content of the produced water of the device, measures continuously 3 times, takes the average value, the specific data is shown in table 2.

[0067] Table 2

[0068]

[0069] After removing the pressure regulating assembly, the water yield of the application is greatly reduced, and the water flow is about 8.21 L / h. Therefore, according to example 1 and example 3, the pressure regulating assembly can make the water yield of the water purifier device increase by about 23% on average; when the water inlet TDS is 5026mg / L, the pressure regulating assembly can make the water yield of the water purifier increase by 63.3%.

[0070] The above examples are only used to further illustrate that the application is a pressing type high pressure pump with concentrated water pressure regulating function, but the application is not limited to the examples, and any simple modification, equivalent change and modification according to the technical essence of the application to the above examples are all within the protection scope of the technical scheme of the application.

Claims

1. A push-button type high-pressure pump with concentrated water pressure regulation function, characterized in that, The pump comprises a handle assembly (1), a piston assembly (2), a pressure regulating assembly (3) and a pump body (5). The pressure regulating assembly (3) comprises a pressure regulating valve sleeve (3-1), a pressure regulating valve body (3-2), a pressure regulating valve core (3-3), a pressure regulating spring (3-4) and a pressure regulating screw (3-5). The pressure regulating assembly (3) is provided with a concentrated water inlet channel and a concentrated water outlet channel. The pressure regulating valve core (3-3) and the pressure regulating spring (3-4) are located in the outlet channel. The pressure regulating screw (3-5) presses the pressure regulating valve core (3-3) and the pressure regulating spring (3-4) in the outlet channel. The pressure regulating screw (3-5) in the pressure regulating assembly (3) is threadedly connected with the pressure regulating valve body (3-2). The pressure regulating valve core (3-3) and the pressure regulating spring (3-4) are installed in the pressure regulating valve body (3-2). The compression amount of the pressure regulating spring (3-4) can be changed by rotating the pressure regulating screw (3-5).

2. The pressurized pump according to claim 1, wherein The handle assembly (1) is connected with the piston assembly (2) and the pressure regulating assembly (3) through a pin shaft. The fixed fulcrum of the handle assembly (1) is located at the end of the pressure regulating assembly (3). When the handle assembly (1) is pressed, the piston rod (2-1) is driven to reciprocate.

3. The pressurized pump according to claim 1, wherein The piston assembly (2) and the pressure regulating assembly (3) are installed in the pump body (5) and are fastened and installed through the end threads.

4. The pressurized pump according to claim 1, wherein The pump body (5) is provided with a water inlet valve. The water inlet valve comprises a spring (5-1) and a water inlet valve core (5-2).

5. The pressurized pump according to claim 1, wherein The pump body (5) is provided with a sealing ring (2-6) at the water outlet channel (5-4).

6. The pressurized pump according to claim 2, wherein The ratio of the distance K between the piston rod (2-1) and the fulcrum to the distance L between the force receiving midpoint of the handle and the fulcrum is less than 1:

5.

7. The pressurized pump according to claim 1, wherein The press-type high-pressure pump can be applied to a water purifier. The water purifier further comprises a membrane assembly (4). The membrane assembly (4) is screw-connected with the pump body (5). The pressure regulating assembly (3) is located between the membrane assembly (4) and the piston assembly (2).

8. The pressurized pump according to claim 7, wherein The membrane assembly (4) is installed with a reverse osmosis membrane element, a nanofiltration membrane element or an ultrafiltration membrane element.

9. The pressurized pump according to claim 7, wherein The water purifier is used for treating surface water, brackish water or seawater.

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