Manual water pump

Abstract

The invention relates to a water pump, in particular to a manual water pump, which aims to solve the problem that there is a lack of a manual water pump with small size, fast water production and high pressure on the market. The pump comprises a chamber, a piston is installed in the chamber, the lower part of the chamber is a water inlet channel, the side wall of the chamber is provided with a water outlet channel, a handle for lifting the piston is installed on the top of the piston, a water permeable disk and a first valve core are provided in the water inlet channel, a one-way valve is provided at the water outlet channel, the one-way valve comprises a valve body and a second valve core, the interior of the valve body comprises a first step surface against the front end surface of the second valve core, the rear end of the front end surface of the second valve core is successively a second step surface and a third step surface, a plurality of water outlet holes are evenly arranged on the annular wall between the second step surface and the third step surface, the rear end surface of the second valve core is open and a spring is provided therein, and the invention has the characteristics of small size, energy saving, environmental protection and easy carrying.

Description

Technical Field

[0001] The invention relates to a water pump, in particular to a manual water pump. Background Art

[0002] In situations such as outdoor camping, emergency, power shortage, sudden failure of electric mechanical pumps, or small water intake, electric mechanical pumps cannot be used or have poor performance. At the same time, there is a lack of a manual water pump that is small in size, fast in water production, and has high pressure on the market. Summary of the invention

[0003] The technical problem to be solved by the present invention is: to provide a manual water pump in order to solve the problem that there is a lack of a manual water pump with small volume, fast water production and high pressure on the market.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a manual water pump, a piston is installed in the chamber, the lower part of the chamber is a water inlet channel, the side wall of the chamber is provided with a water outlet channel, the top of the piston is provided with a handle for lifting and pressing the piston, a water permeable disk and a first valve core are provided in the water inlet channel, a support hole for slidingly supporting the first valve core is provided at the axial position of the water permeable disk, an opening is provided on the upper end surface of the water permeable disk in the circumference of the support hole, and a ring-arranged water inlet hole is provided on the lower end surface of the water permeable disk, the first valve core is "T"-shaped, including an upper horizontal end and a lower vertical rod, the vertical rod is a sliding support portion and is provided in the support hole, and the horizontal end moves with the sliding support The up and down movement of the part moves away from or is pressed against the opening; a one-way valve is arranged at the water outlet channel, and the one-way valve comprises a valve body and a second valve core, the interior of the valve body has a first step surface that presses against the front end surface of the second valve core, the rear end of the front end surface of the second valve core is respectively a second step surface and a third step surface, a plurality of water outlet holes are evenly arranged on the annular wall between the second step surface and the third step surface, the third step surface is connected to the supporting circumferential surface of the second valve core, the supporting circumferential surface contacts the inner wall of the valve body and supports the second valve core to slide in the valve body, the rear end surface of the second valve core is an opening shape and a spring is arranged therein, the front end of the spring presses against the second valve core, and the rear end of the spring presses against the step surface of the water outlet channel.

[0005] Furthermore, the top of the piston is hinged to the lower side of the handle, the front end of the handle is hinged to the outer wall of the chamber through a support rod, and the rear part of the handle is a grip.

[0006] Furthermore, the water-permeable disk is fixedly installed in a mounting hole in the water inlet channel, and the horizontal end of the first valve core is in an inverted frustum shape.

[0007] Furthermore, a first groove is formed at the bottom of the vertical rod of the first valve core, and a retaining spring is installed on the first groove. The outer diameter of the retaining spring is larger than the inner diameter of the supporting hole on the water-permeable plate.

[0008] Furthermore, an "L"-shaped connection port that can rotate 0 to 360 degrees is installed on the water inlet channel.

[0009] Furthermore, a second groove is formed on the circumferential edge of the water-permeable tray, and a sealing ring is sleeved in the second groove.

[0010] Furthermore, the thrust of the spring is slightly greater than the negative pressure in the chamber when water enters.

[0011] The beneficial effect of the present invention is that the manual water pump of the present invention has a compact internal structure and therefore a small size. Through the alternating switching operation of the first valve core and the second valve core, the overall air tightness of the manual water pump is ensured, the water outlet efficiency is improved and the water outlet pressure is also improved. The first valve core and the second valve core are metal valve cores with a long service life. In summary, the present invention has the characteristics of small size, no need for power supply, energy saving and environmental protection, and easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is a schematic diagram of the structure of the present invention when water is discharged.

[0014] Figure 2 It is a schematic structural diagram of the present invention when water is entering.

[0015] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0016] Figure 4 It is a schematic diagram of the structure of the permeable tray.

[0017] In the figure: 1. handle, 2. water inlet channel, 3. water outlet channel, 4. piston, 5. chamber, 6. water permeable disc, 7. first valve core, 8. support hole, 9. water inlet hole, 10. valve body, 11. second valve core, 12. first step surface, 13. second step surface, 14. third step surface, 15. water outlet hole, 16. supporting peripheral surface, 17. spring, 18. support rod, 19. circular platform, 20. first groove, 21. second groove, 22. opening, 23. connecting port. DETAILED DESCRIPTION

[0018] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0019] like Figures 1 to 4A manual water pump is shown, with a handle 1, which can be long or short and can be provided with a sleeve to increase the lever arm, the lower side of the handle 1 is hinged to the top of the piston 4, the front end of the handle 1 is hinged to the outer wall of the chamber 5 through a support rod 18, the rear part of the handle 1 is a grip, the piston 4 is slidably installed in the chamber 5, and moves upward or downward with the lifting and pressing of the handle 1, the lower part of the chamber 5 is a water inlet channel 2, and a water outlet channel 3 is provided on the side wall, a water permeable tray 6 is installed in the water inlet channel 2, in order to improve the air tightness, the water permeable tray 6 is installed in the chamber 5 through a circular platform 19, and a circular mounting hole is provided in the middle of the circular platform 19, and the water permeable tray 6 is installed in the mounting hole, as shown in FIG. Figure 4 The water permeable disk 6 shown is in the shape of a disk and has a second groove 21 on its circumferential edge. A sealing ring is sleeved in the second groove 21, which plays the role of sealing and supporting the water permeable disk 6. There is a support hole 8 at the axial position of the water permeable disk 6 for installing the first valve core 7. Six water inlet holes 9 are opened at the lower end of the water permeable disk 6. There is an opening 22 on the upper end surface of the water permeable disk around the support hole 8. The water inlet holes 9 and the openings 22 are connected and evenly distributed around the support hole 8. The first valve core 7 is "T"-shaped, including an upper horizontal end and a lower vertical rod. The vertical rod is a sliding support portion and is arranged in the support hole 8. A first groove 20 is opened on the outer wall of the bottom of the vertical rod. The first A retaining ring is mounted on the groove 20, and the outer diameter of the retaining ring is larger than the inner diameter of the supporting hole 8. When water enters under negative pressure, it can prevent the first valve core 7 from escaping from the water-permeable disk 6. The horizontal end moves away from or is pressed onto the opening 22 as the vertical rod moves up and down. The horizontal end of the first valve core 7 is an inverted cone shape that is easy for water to flow out. When the handle 1 is pressed down, the horizontal end of the first valve core 7 is pressed onto the opening 22, which plays a sealing role and prevents the water from flowing back. A connecting port 23 is installed on the water inlet channel 2. The connecting port 23 is "L"-shaped, one end is connected to an external water source, and the other end is a rotating joint that can rotate 0 to 360 degrees. The connecting port 23 is rotated according to the location of the external water source for connection.

[0020] The water outlet channel 3 is arranged slightly above the water permeable disc 6 and communicated with the chamber 5. A one-way valve is installed on the water outlet channel 3. The one-way valve includes a valve body 10 and a second valve core 11. The valve body 10 has a first step surface 12 inside that abuts against the front end surface of the second valve core 11. The rear end of the front end surface of the second valve core 11 is successively a second step surface 13 and a third step surface 14. A plurality of water outlet holes 15 are evenly opened on the annular wall between the second step surface 13 and the third step surface 14. The third step surface 14 and the first step surface 15 are connected to each other. The supporting circumferential surfaces 16 of the second valve cores 11 are connected, and the supporting circumferential surfaces 16 are in contact with the inner wall of the valve body 10 and support the second valve core 11 to slide in the valve body 10. The rear end of the second valve core 11 is open, in which a spring 17 is placed. The front end of the spring 17 is against the second valve core 11, and the rear end of the spring 17 is against the step surface of the water outlet channel 3. The thrust of the spring 17 squeezing the second valve core 11 is slightly greater than the negative pressure in the chamber 5 when water is flowing in, that is, the second valve core 11 can remain in a closed state when water is flowing in.

[0021] For the sake of convenience, the sealing ring and the retaining ring are not shown in the figure. Figure 1 and Figure 3 When the second valve core 11 is in a closed state, its front end surface abuts against the first step surface 12 of the valve body 10. The first step surface 12, the second step surface 13 and the third step surface 14 form a small chamber B between the second valve core 11 and the valve body 10.

[0022] When water is inletting, the piston 4 is lifted up along with the handle 1, negative pressure is formed in the chamber 5, and the first valve core 7 moves upward, exposing the water inlet hole 9, and the external water source flows into the chamber 5 through the water inlet channel 2, the water inlet hole 9 and the opening 22;

[0023] When water is discharged: after the water inlet operation, water is stored in the chamber 5, and the piston 4 generates pressure as the handle 1 is pressed downward. Under the action of the pressure, the first valve core 7 moves downward to block the opening 22, and the water in the chamber 5 cannot flow back through the opening 22 and the water inlet hole 9. The water in the chamber 5 enters the water outlet channel 3 and enters the small chamber B through the water outlet hole 15 on the second valve core 11;

[0024] When water is discharged for the first time, there is no water in the small chamber B. The water compresses the air in the small chamber B and acts on the first step surface 12, the second step surface 13 and the third step surface, generating a pressure difference to push the second valve core 11 to move backward. After each water discharge, air will remain in the small chamber B or be sucked into the chamber 5. When water is discharged next time, this part of the air will be pressed into the small chamber B from the water outlet 15 to generate a pressure difference again to push the second valve core 11 to move backward, and so on.

[0025] The water outlet channel 3 can also be connected to the reverse osmosis device. The manual water pump in the present invention can generate a pressure of 0.8MPa to press the incoming water into the reverse osmosis device. During the process of lifting and pressing down, a part of the pressure and water that has not completely permeated through the reverse osmosis device will flow back to the second valve core 11 and act on the front end face of the second valve core 11 in the opposite direction, reducing the pressure difference required when the second valve core 11 moves backward, which can save labor in the process of continuous manual water extraction.

[0026] The above description only describes the specific implementation mode of the present invention. Various examples do not limit the essential content of the present invention. After reading the description, ordinary technicians in the relevant technical field can modify or deform the specific implementation modes described above without departing from the essence and scope of the invention.

Claims

1. A manual water pump having a chamber, Features: A piston is installed in the chamber, the lower part of the chamber is a water inlet channel, the side wall of the chamber is provided with a water outlet channel, a handle for lifting and pressing the piston is installed on the top of the piston, a water permeable disk and a first valve core are provided in the water inlet channel, a support hole for slidingly supporting the first valve core is provided at the axial position of the water permeable disk, an opening is provided on the upper end surface of the water permeable disk in the circumference of the support hole, and an annularly arranged water inlet hole is provided on the lower end surface of the water permeable disk, the first valve core is "T"-shaped, including an upper horizontal end and a lower vertical rod, the vertical rod is a sliding support part and is provided in the support hole, and the horizontal end moves away from or is pressed against the opening as the sliding support part moves up and down. The one-way valve is arranged at the outlet passage, and the one-way valve comprises a valve body and a second valve core, the valve body has a first step surface inside which abuts against the front end surface of the second valve core, the rear end of the front end surface of the second valve core is a second step surface and a third step surface in sequence, a plurality of water outlet holes are evenly arranged on the annular wall between the second step surface and the third step surface, the third step surface is connected to the supporting peripheral surface of the second valve core, the supporting peripheral surface contacts the inner wall of the valve body and supports the second valve core to slide in the valve body, the rear end surface of the second valve core is an opening shape and a spring is arranged therein, the front end of the spring abuts against the second valve core, and the rear end of the spring abuts against the step surface of the outlet passage; The water permeable disc is fixedly installed in the installation hole in the water inlet channel, and the horizontal end of the first valve core is in the shape of an inverted frustum; A first groove is formed at the bottom of the vertical rod of the first valve core, a retaining spring is installed on the first groove, and the outer diameter of the retaining spring is larger than the inner diameter of the supporting hole on the water-permeable plate; The thrust of the spring is greater than the negative pressure in the chamber when water enters.

2. The manual water pump according to claim 1, Features: The top of the piston is hinged to the lower side of the handle, the front end of the handle is hinged to the outer wall of the chamber through a supporting rod, and the rear part of the handle is a grip.

3. The manual water pump according to claim 1, Features: The water inlet channel is provided with an "L"-shaped connection port which can rotate 0 to 360 degrees.

4. The manual water pump according to claim 1, Features: A second groove is formed on the circumferential edge of the water-permeable tray, and a sealing ring is sleeved in the second groove.

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