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

Abstract

The invention 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 present application relates to the technical field of drinking water treatment, and in particular to a push-type high-pressure pump with a concentrated water pressure regulating function. Background Art

[0002] Water is the origin of life and one of the basic needs of human life and production. Humans need a lot of safe drinking water during field training, emergency rescue, and field exploration. The surrounding environment often has sufficient but unsuitable water resources for direct drinking. Due to the complex water resources in various parts of the world and the different water quality components, simple water purification processes cannot meet the needs of various water sources. Drinking untreated natural water sources contains various complex substances and microorganisms, including organic pollution, heavy metal pollution, viruses and bacteria. Direct drinking will cause allergies, diarrhea, poisoning and other dangerous situations, which seriously endanger human health. Therefore, combining convenient water treatment technology and equipment with water purification technology is an important means to ensure the safety of drinking water for personnel in emergency situations.

[0003] In order to meet the basic technical requirements of portable water purifiers, such as high efficiency, lightness, labor saving, durability, and portability, membrane technology has become the mainstream technology. The following representative water purification devices have been published at home and abroad:

[0004] The Chinese invention patent with the announcement number CN 118324254A discloses "a reverse osmosis water purification device", which includes a frame, a water purification shell is fixedly connected to the frame, a first fixed frame is fixedly connected inside the water purification shell, a reverse osmosis membrane is fixedly connected between the first fixed frame and the water purification shell, a water purification pipe is fixedly connected to the first fixed frame, the side of the reverse osmosis membrane away from the first fixed frame is connected to the water purification pipe, a concentrated water pipe is fixedly connected to the first fixed frame and connected, a limiting flow frame is fixed inside the concentrated water pipe, the limiting flow frame is rotatably connected to the limiting flow plate, a monitoring mechanism for detecting the flow of purified water is provided on the water purification pipe, and a regulating mechanism for regulating the pressure in the water purification shell is provided on the concentrated water pipe. The flow area of ​​the concentrated water pipe is changed by the cooperation of the limiting flow plate and the limiting flow frame, thereby regulating the pressure in the water purification shell.

[0005] The US invention patent with the publication number US19980011386A discloses a compact portable handheld water purification filter, which includes a housing, a handle, and a pump, with an activated carbon filter and a ceramic filter arranged concentrically around the pump. The device is compact in design, but there is no pressure regulating device, the water output is low, and the water recovery rate is not high.

[0006] The Chinese invention patent with announcement number CN105804962A discloses "a pressure-adjustable bidirectional manual pump" and a one-way water outlet mechanism arranged at the water inlet end. The one-way water outlet mechanism is also provided with a water outlet spring to adjust the pressure, which can balance the force of the reverse osmosis membrane assembly, reduce damage to the reverse osmosis membrane, and improve the water quality of the produced water.

[0007] The Chinese utility model patent with announcement number CN 214167562 U discloses "an outdoor emergency water purification device", which adopts a pull-out reverse osmosis water purification device, which can effectively remove harmful substances in the water. The device is pressurized by a pull-out plunger design, which is relatively laborious to operate. In addition, since the reverse osmosis water treatment process is limited by the recovery rate, the device cannot adjust the pressure and the water output cannot be controlled, resulting in a small water output.

[0008] In summary, it is difficult for current portable water purifiers to be miniaturized, lightweight, labor-saving and efficient while meeting the requirements of complex water sources, water quality and treatment processes. 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, brackish water, etc., the reverse osmosis treatment process is adopted. The existing invention has a large driving force and low water production efficiency. Therefore, the invention of a push-type high-pressure pump with a concentrated water pressure regulating function that is labor-saving and efficient, compact in size, reliable in structure and applicable to a variety of water sources, water quality and water treatment processes is of great significance to the development and design of portable water purifiers. Summary of the invention

[0009] To this end, the present invention proposes a new type of push-type high-pressure pump with a concentrate pressure regulating function that can solve at least part of the above-mentioned problems. Through a specific pressing mechanism, the driving force required for operation is greatly reduced; an adjustable concentrate discharge valve is designed, which can adjust the concentrate discharge pressure according to different water source types, different water treatment processes (ultrafiltration, nanofiltration, reverse osmosis, etc.) and recovery rates, water production, and water quality requirements, so that it can be applied to different water treatment processes and meet water production requirements.

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

[0011] The present application proposes a push-type high-pressure pump with a concentrated water pressure regulating function, which is 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 outlet channel, the pressure regulating valve core and the pressure regulating spring are located in the outlet channel, the pressure regulating screw presses the pressure regulating valve core and the pressure regulating spring in the outlet channel, the pressure regulating screw in the pressure regulating assembly is threadedly matched with the pressure regulating valve body, the pressure regulating valve core and the pressure regulating spring are installed in the pressure regulating valve body, and the compression amount of the pressure regulating spring is changed by turning the pressure regulating screw;

[0012] The adjusting screw in the pressure regulating assembly is threadedly connected to the pressure regulating valve body. Turning the adjusting screw to adjust its depth can change the compression amount of the spring, i.e. the elastic force, to adjust the valve pressure limit;

[0013] Preferably, the handle assembly is connected to the piston assembly and the pressure regulating assembly via a pin, 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] Preferably, the piston assembly and the pressure regulating assembly are installed in the pump body and are fastened by end threads.

[0015] Preferably, 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] Preferably, a sealing ring is provided between the piston cavity and the water outlet channel of the pump body.

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

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

[0019]

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

[0021] Preferably, the push-type high-pressure pump can be applied to a water purifier, which also includes a membrane assembly, the membrane assembly is screwed to the pump body, and the pressure regulating assembly is located between the membrane assembly and the piston assembly.

[0022] Preferably, a reverse osmosis membrane element, a nanofiltration membrane element or an ultrafiltration membrane element is installed in the membrane assembly.

[0023] Preferably, the water purifier is used to treat surface water, brackish water or seawater. When the water purifier treats surface water, the pressure of the pressure regulating component 3 is adjusted to 0.1~1MPa, when the water purifier treats brackish water, the pressure of the pressure regulating component 3 is adjusted to 1~4MPa, and when the water purifier treats seawater, the pressure of the pressure regulating component 3 is adjusted to 4~8MPa. The water quality of the produced water meets the "Drinking Water Purification Water Quality Standard" (CJ 94-2005) and can be used as drinking water for outdoor activities and emergency rescue.

[0024] The push-type handle uses the pin shaft at the pressure regulating assembly as a support point. When the handle is stretched upward, the piston moves to the left, the water inlet one-way valve core in the pump body opens, and the raw water enters the piston chamber; when the handle is pressed downward, the water in the piston chamber is pressed into the membrane assembly; the pump body water outlet flow channel is connected with the water inlet flow channel of the membrane assembly, the membrane assembly concentrated water flow channel 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, and finally the water in the membrane assembly can be introduced into the pressure regulating valve core in the pressure regulating assembly, and the pressure regulating valve core is acted upon by the elastic force of the spring, and the pressure limit when the valve is opened is equal to the size of the elastic force;

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

[0026] Among them, the push-type high-pressure pump can greatly reduce the driving force of the operation. Therefore, by increasing the pressure through the pressure regulating component, the recovery rate of the water treatment process and the water production efficiency can be improved with only a small increase in the driving force.

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

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

[0029] The integrated design of the pressure regulating assembly can make full use of the space between the membrane assembly and the piston assembly. The structure is simple and ingenious, which changes the size limitation and space waste caused by the distance between the pressure regulating valves at both ends of the membrane assembly of the traditional portable water purifier and the force bearing point of the pressure rod, greatly reducing the length of the device. The components are compact in structure and highly integrated, which improves its portability, has a low failure rate and is easy to maintain.

[0030] The pressure limit can be adjusted through the pressure regulating component in the pressure regulating valve to regulate the pressure in the membrane component during water purification, increase the desalination rate and recovery rate of the water produced in the water treatment process, and increase the water production flow rate by about 20~60%;

[0031] Since the push-type high-pressure pump can provide high-pressure water inlet and can adjust the concentrate discharge pressure at the same time, the handle assembly and the piston assembly are designed to provide high-pressure water inlet, and the pressure regulating assembly can adjust the concentrate outlet pressure, which can balance the force of the membrane assembly, reduce damage to the membrane, and improve the water quality of the produced water. Therefore, the push-type high-pressure pump provided in this application is suitable for a variety of membrane water treatment processes with different pressures, including reverse osmosis membranes, ultrafiltration membranes, nanofiltration membranes, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0033] Figure 1 Schematic diagram of the principle of a push-type high-pressure pump in an embodiment of the present application;

[0034] Figure 2 is a cross-sectional schematic diagram of a push-type high-pressure pump in an embodiment of the present application;

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

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

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

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

[0039] Figure 7 It is a schematic diagram of an explosion of a water purifier in an 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. pump outlet flow channel, 5-5. concentrated water discharge flow channel. DETAILED DESCRIPTION

[0041] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

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

[0043] This embodiment proposes a new type of push-type high-pressure pump, which can provide a stable high-pressure filtering environment for the membrane assembly. Figure 1 , the raw water is sucked into the chamber through the piston assembly, and then the raw water is pressed into the membrane assembly through the plunger for membrane filtration. The concentrated water produced 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 assembly, located in the concentrated water discharge section of the membrane. When the water pressure in the membrane assembly is higher than the pressure controlled by the pressure regulating assembly, the concentrated water can be discharged from the membrane assembly by the high pressure provided by the piston assembly. The push-type high-pressure pump integrates a piston assembly that provides high-pressure water inlet and a pressure regulating assembly that controls pressure, which can provide a stable high-pressure filtration environment for the membrane assembly and significantly improve the water production efficiency of the membrane assembly.

[0044] refer to Figures 2 to 3 This embodiment proposes a push-type high-pressure pump with concentrated water pressure regulating function, including 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 a push-type high-pressure pump; the pump body 5 is connected to the membrane assembly 4; the pressure regulating assembly 3 includes 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 includes 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 channel 5-4 of the pump body 5 is connected with the water inlet channel 4-1 of the membrane assembly 4, the concentrated water channel 4-2 of the membrane assembly is connected with the annular water inlet channel 3-6 of the pressure regulating assembly, the annular water inlet channel 3-6 is connected with the 3-7 hole channel, and is connected with the pressure regulating valve core 3-3, so that the water in the membrane assembly 4 can be finally introduced into the pressure regulating valve core 3-3 in the pressure regulating assembly 3, and the pressure regulating valve core 3-3 is acted upon by the elastic force of the spring 3-4, and the pressure limit value when the pressure regulating valve core 3-3 is opened is equal to the size of the elastic force.

[0047] The specific pressure regulating process of the pressure regulating component is shown. The adjusting screw 3-5 in the pressure regulating component 3 is threadedly connected to the pressure regulating component 3. Turning the adjusting screw 3-5 to adjust its depth can change the compression amount of the spring 3-4, that is, the elastic force, to adjust the valve pressure limit.

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

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

[0050]

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

[0052] In some embodiments, Figure 5 and Figure 6 The invention provides a working process of a push-type high-pressure pump, including a water absorbing process of the push-type high-pressure pump and a pressurized water purification process of the push-type high-pressure pump.

[0053] like Figure 5 As shown, the push-type handle assembly 1 uses the pin shaft at the pressure regulating assembly 3 as a support point. When the handle assembly 1 is stretched upward, the piston moves to the left, the water inlet one-way valve core 5-2 of the pump body 5 opens, and the raw water enters the piston chamber.

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

[0055] In some embodiments, Figure 7 As shown, the push-type high-pressure pump of the present application is used in a water purifier for drinking water purification, and the water purifier also includes a membrane assembly, which is screwed to the pump body, and the pressure regulating assembly is located between the membrane assembly and the piston assembly.

[0056] Preferably, a reverse osmosis membrane element, a nanofiltration membrane element or an ultrafiltration membrane element is installed in the membrane assembly.

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

[0058] The embodiments of the present invention are further described below through specific examples. Embodiment 1

[0059] The drinking water purification treatment water purifier adopts the combination of the push-type high-pressure pump and the reverse osmosis membrane assembly of the present application, and adjusts the pressure regulating assembly in the push-type high-pressure pump to the control pressure according to the salt content. When the ambient temperature is 25°C, the pressing frequency is 60 times / minute. The water inlet of the present invention uses simulated brackish water with different salt contents. After the device is stably operated for not less than 5 minutes, the water volume and salt content of the device are measured, and the measurement is continuous for 3 times, and the average value is taken. The specific data are described in the following Table 1. It can be seen from the table that the water flow rate of the device of the present invention is about 10.88 L / h, and the desalination rate can reach 97.3%.

[0060] Table 1.

[0061] Embodiment 2

[0062] like Figure 5 and Figure 6 As shown, the present invention is designed with a simple and effective pressure regulating valve mechanism at the pressure regulating assembly to adjust the concentrated water pressure and 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 draws raw water into the piston chamber, and the air on the other side of the piston is squeezed out to ensure smooth movement of the piston; when the handle assembly is pressed down, the raw water enters the reverse osmosis membrane, and the concentrated water enters the pressure regulating assembly through the flow channel. When the concentrated water pressure continues to increase until it exceeds the set value of the pressure regulating valve, the pressure regulating valve core is pushed open and discharged through the concentrated water outlet. The pressure regulating assembly is connected to the pump body as a whole, does not occupy additional space, has high integration, simple structure, low probability of failure, and is easy to maintain. Embodiment 3

[0063] The drinking water purification and treatment water purifier adopts the push-type high-pressure pump and nanofiltration membrane assembly of this application, adjusts the pressure regulating assembly in the push-type high-pressure pump to control the pressure of 0.1~1MPa, and operates the device stably for not less than 5 minutes. Then, the water volume and water quality of the device are measured, and the measurement is repeated 3 times to take the average value. It can be seen that the water produced by the device of this application meets the water quality requirements of the "Standard for Drinking Water Quality" (GB 5749-2006). Embodiment 4

[0064] The drinking water purification treatment water purifier adopts the push-type high-pressure pump and ultrafiltration membrane assembly of the present application, adjusts the pressure regulating assembly in the push-type high-pressure pump to control the pressure of 0.1~1MPa, and operates the device stably for not less than 5 minutes. Then, the water volume and water quality of the device are measured, and the measurement is performed continuously for 3 times to take the average value. It can be seen that the device of the present application removes most of the bacteria, inorganic salts, suspended matter and mineral salts in seawater, and the produced water has pure water quality, and the produced water meets the water quality requirements of the "Standards for Drinking Water Quality" (GB 5749-2006). Embodiment 5

[0065] The drinking water purification treatment water purifier adopts the push-type high-pressure pump and reverse osmosis membrane assembly of this application, adjusts the pressure regulating assembly in the push-type high-pressure pump to control the pressure of 4~8MPa, and operates the device stably for not less than 5 minutes. Then, the water volume and water quality of the device are measured, and the measurement is repeated for 3 times to take the average value. It can be seen that the water produced by the device of this application meets the water quality requirements of the "Standard for Drinking Water Quality" (GB 5749-2006). Comparative Example 1

[0066] After the pressure regulating component is removed from the water purifier in Example 1 of the present application, a conventional back pressure valve is used. At an ambient temperature of 25°C, the pressing frequency is 60 times / minute, and the inlet water is brackish water with the same salt content as in Example 1. After the device is stably operated for no less than 5 minutes, the water output and salt content of the water produced by the device are measured. The measurements are performed three times in succession and the average value is taken. The specific data are shown in Table 2 below.

[0067] Table 2

[0068]

[0069] After removing the pressure regulating assembly, the water output of the present invention dropped significantly, and the water output flow rate was about 8.21 L / h. Therefore, according to Examples 1 and 3, it can be seen that the pressure regulating assembly can increase the water output of the water purifier device by an average of about 23%; when the inlet TDS is 5026 mg / L, the pressure regulating assembly can increase the water output of the water purifier by 63.3%.

[0070] The above embodiments are only used to further illustrate that the present invention is a push-type high-pressure pump with concentrated water pressure regulating function, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. A push-type high-pressure pump with concentrated water pressure regulating function, characterized in that: The invention 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 threadably matched 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); and the compression amount of the pressure regulating spring (3-4) is changed by turning the pressure regulating screw (3-5).

2. The push-type high-pressure pump according to claim 1, characterized in that: The handle assembly (1) is connected to the piston assembly (2) and the pressure regulating assembly (3) via 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 perform reciprocating motion.

3. The push-type high-pressure pump according to claim 1, characterized in that: The piston assembly (2) and the pressure regulating assembly (3) are installed in the pump body (5) and are fastened and installed via end threads.

4. The push-type high-pressure pump according to claim 1, characterized in that: The pump body (5) is provided with a water inlet valve, and the water inlet valve comprises a spring (5-1) and a water inlet valve core (5-2).

5. The push-type high-pressure pump according to claim 1, characterized in that: A sealing ring (2-6) is provided between the piston chamber and the water outlet passage (5-4) of the pump body (5).

6. The push-type high-pressure pump according to claim 1, characterized in that: The ratio of the distance K between the piston rod and the fulcrum to the distance L between the force midpoint of the handle and the fulcrum is less than 1:

5.

7. The push-type high-pressure pump according to any one of claims 1 to 6, characterized in that: The push-type high-pressure pump can be applied to a water purifier, which further comprises a membrane assembly (4), wherein the membrane assembly (4) is screw-connected to a pump body (5), and the pressure regulating assembly (3) is located between the membrane assembly (4) and the piston assembly (2).

8. The water purifier according to claim 7, characterized in that: The membrane assembly (4) is installed with a reverse osmosis membrane element, a nanofiltration membrane element, or an ultrafiltration membrane element.

9. The water purifier according to claim 7, characterized in that: The water purifier is used for treating surface water or brackish water or sea water.

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