Safe anti-residue pump head

Abstract

The utility model discloses a safe anti-residue pump head which comprises a pump head body. The pressing head is arranged at the top of the pump head body, a liquid outlet pipe is arranged on the outer wall of the pressing head, a scraping pipe is arranged on the inner wall of the liquid outlet pipe, a transmission plate is arranged at one end of the scraping pipe, a leakage-proof cover is arranged at the front end of the liquid outlet pipe, and a flow guide groove is formed in the inner side of the leakage-proof cover; the linkage scraping mechanism comprises a mounting base, the mounting base is arranged on the inner wall of the pressing head, a containing groove and a plurality of reset grooves are formed in the mounting base, a positioning rod is arranged in each reset groove, the other end of each positioning rod is connected with a blocking plate, a pressing rod is arranged on the top of each blocking plate, and a plurality of racks are connected to the bottom of each blocking plate. All parts in the pressing head are linked, the scraping pipe scrapes out residual liquid on the inner wall, the liquid is prevented from being left and agglomerated at an outlet of the liquid outlet pipe, the leakage-proof cover is pushed open, the liquid flows out orderly through the flow guide groove in the inner side of the leakage-proof cover, splashing is avoided, when the palm is loosened, the leakage-proof cover is rapidly closed, the liquid outlet is tightly plugged, and residues caused by liquid dripping or flowing are completely eradicated.

Description

Technical Field

[0001] This utility model is a safe and residue-proof pump head, belonging to the field of pump head technology. Background Technology

[0002] Pump heads, as a common liquid dispensing device, are widely used in the fields of daily chemicals, pharmaceuticals and food packaging. Traditional pump heads usually consist of a pressing rod, a pump chamber, a one-way valve and a spring return mechanism. They achieve directional delivery of liquid by pressing to drive the spring return and cooperating with the valve.

[0003] Existing pump heads are mostly made of polypropylene (PP), polyethylene (PE), or silicone. Although they have basic sealing properties, in the application of high-viscosity emulsions (such as sunscreen and serums), existing pump heads generally have a high residue rate after dispensing due to the lack of an active cleaning mechanism. Emulsion is easily left at the outlet of the dispensing tube, and it is difficult to thoroughly clean the dead corners in the structure. The residual liquid exposed to air will gradually oxidize and clump, forming a sanitary dead corner. This not only leads to the risk of secondary pollution and cross-infection, but also blocks the dispensing outlet, affecting the subsequent use effect and causing waste. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a safe and residue-proof pump head. This addresses the problem that existing pump heads, after dispensing liquid by pressing, generally have a high residue rate due to the lack of an active cleaning mechanism. Emulsion easily remains at the outlet of the liquid outlet, and structural dead corners are difficult to clean thoroughly. Residual liquid exposed to air will gradually oxidize and clump, forming unsanitary dead corners. This not only leads to secondary pollution and cross-infection risks but also blocks the liquid outlet, affecting subsequent use and causing waste.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a safe and residue-proof pump head, comprising a pump head body for pumping liquid;

[0006] The pressing head is located on the top of the pump head body. The top of the pressing head has a fitting groove, and the bottom of the fitting groove has a first channel. The outer wall of the pressing head has a liquid outlet pipe, and the inner wall of the liquid outlet pipe has a scraping pipe that is movably embedded. The end of the scraping pipe away from the outlet has a transmission plate. The front end of the liquid outlet pipe has a leak-proof cover, and the inner side of the leak-proof cover has a guide groove.

[0007] A linkage scraping mechanism includes a mounting base disposed on the inner wall of a pressing head. The mounting base has a receiving groove and several reset grooves. Mounting holes are provided on both sides of the inner wall of the receiving groove. A rotating rod is horizontally embedded between the mounting holes. A first rotating wheel and several second rotating wheels are sleeved on the rotating rod. A positioning rod is slidably disposed in the reset groove. A reset spring is embedded in the positioning rod. A baffle plate is fixedly connected to the other end of the positioning rod away from the reset groove. A pressing rod is provided on the top of the baffle plate. The pressing rod extends vertically upward and passes through a first channel. Several racks are fixedly connected to the bottom of the baffle plate.

[0008] Furthermore, the leak-proof cover is hinged to the outer wall of the liquid outlet pipe. A torsion spring is provided at the hinge point between the leak-proof cover and the liquid outlet pipe. The automatic sealing of the leak-proof cover is achieved through the elastic reset action of the torsion spring, which effectively prevents liquid leakage and keeps the liquid outlet hygienic.

[0009] Furthermore, the top of the pressing rod extends radially outward to form an extension, which increases the force-bearing area and makes it easier for the user to press.

[0010] Furthermore, the extension portion is adapted to the shape of the fitting groove, which improves stability and reduces shaking when pressed.

[0011] Furthermore, the transmission plate extends horizontally to the bottom of the receiving groove at one end of the inner cavity of the pressing head, which facilitates the linkage of scraping and pressing.

[0012] Furthermore, the transmission plate is provided with meshing teeth at one end near the inner cavity of the pressing head, which cooperate with the first rotating wheel, thereby improving the transmission efficiency between the scraping tube and the pressing rod.

[0013] Furthermore, the first rotating wheel and the second rotating wheel are evenly arranged along the axis of the rotating rod, and the second rotating wheel is symmetrically arranged on both sides of the first rotating wheel, so that the transmission plate moves horizontally more stably.

[0014] Furthermore, the rack is correspondingly arranged with the second rotating wheel and meshes with the second rotating wheel for transmission, thereby improving the transmission efficiency.

[0015] Furthermore, the rack is located behind the second rotating wheel to ensure the forward scraping motion of the scraping tube when pressed.

[0016] Furthermore, the cross-section of the inner wall of the scraping tube is either trapezoidal or rectangular, which naturally guides the flow, improves the liquid discharge efficiency, and facilitates cleaning.

[0017] The beneficial effects of this utility model are as follows: When the palm presses down, the internal components of the pressing head are linked together, the scraping tube scrapes out the residual liquid on the inner wall, preventing the liquid from remaining and clumping at the outlet of the liquid pipe, and pushes open the leak-proof cover. The liquid flows out in an orderly manner through the guide groove inside the leak-proof cover, avoiding splashing and improving the guiding efficiency. When the palm is released, the leak-proof cover closes quickly under the action of the positioning rod, the return spring and the gear transmission, tightly sealing the liquid outlet and eliminating the residue caused by liquid dripping or flowing. This ensures that the outside of the container is always clean and avoids problems such as pollution and corrosion caused by liquid residue. At the same time, it also prevents external impurities from entering the inside of the container, ensuring the quality of the liquid. Attached Figure Description

[0018] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a safe and residue-proof pump head according to the present invention;

[0020] Figure 2 This is a cross-sectional view of a safe and residue-proof pump head according to the present invention;

[0021] Figure 3 This is a partial structural diagram of a safe and residue-proof pump head according to the present invention;

[0022] Figure 4 This is a schematic diagram of the mounting base.

[0023] Figure 5 A cross-sectional view of the leak-proof cover;

[0024] Figure 6 This is a cross-sectional view of the scraping tube in Example 1;

[0025] Figure 7 This is a cross-sectional view of the scraping tube in Example 2.

[0026] Key reference numerals in the attached drawings: 1. Pump head body; 2. Pressing head; 21. Fitting groove; 22. First channel; 23. Liquid outlet pipe; 24. Scraping pipe; 25. Transmission plate; 26. Leak-proof cover; 261. Guide groove; 3. Linkage scraping mechanism; 31. Mounting base; 32. Receiving groove; 321. Mounting hole; 322. Rotating rod; 323. First transmission wheel; 324. Second transmission wheel; 33. Reset groove; 34. Positioning rod; 341. Reset spring; 35. Baffle plate; 351. Rack; 36. Pressing rod; 37. Extension part. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] Example 1

[0029] Please see Figure 1 , Figure 2 , Figure 3 This utility model provides a safe and residue-proof pump head technical solution: a safe and residue-proof pump head includes a pump head body 1 for pumping liquid, the structure of which includes:

[0030] Press head 2, the press head 2 is located on the top of pump head body 1, the top of the press head 2 is provided with a fitting groove 21, the bottom of the fitting groove 21 is provided with a first channel 22, the outer wall of the press head 2 is provided with a liquid outlet pipe 23, the inner wall of the liquid outlet pipe 23 is movably fitted with a scraper pipe 24, the end of the scraper pipe 24 away from the outlet is provided with a transmission plate 25, the front end of the liquid outlet pipe 23 is provided with a leak-proof cover 26, and the inner side of the leak-proof cover 26 is provided with a guide groove 261;

[0031] The linkage scraping mechanism 3 includes a mounting base 31, which is located on the inner wall of the pressing head 2. The mounting base 31 has a receiving groove 32 and several reset grooves 33. The inner wall of the receiving groove 32 has mounting holes 321 on both sides. A rotating rod 322 is horizontally embedded between the mounting holes 321. A first rotating wheel 323 and several second rotating wheels 324 are sleeved on the rotating rod 322. A positioning rod 34 is slidably provided in the reset groove 33. A reset spring 341 is embedded in the positioning rod 34. A baffle plate 35 is fixedly connected to the other end of the positioning rod 34 away from the reset groove 33. A pressing rod 36 is provided on the top of the baffle plate 35. The pressing rod 36 extends vertically upward and passes through the first channel 22. Several racks 351 are fixedly connected to the bottom of the baffle plate 35.

[0032] Please see Figure 5 To further enhance its residue prevention function, the leak-proof cover 26 is hinged to the outer wall of the outlet pipe 23. A torsion spring is installed at the hinge point between the leak-proof cover 26 and the outlet pipe 23. The leak-proof cover 26 is hinged to the outer wall of the outlet pipe 23 via the torsion spring. When the scraper tube 24 pushes the leak-proof cover 26 to open the outlet, the torsion spring deforms under force and stores elastic potential energy. The liquid is pumped from the pump head body 1 into the outlet pipe 23 and then flows out along the guide groove 261. Once the hand is released, the pressing head 2 resets, and the scraper tube 24 retracts. At this time, the torsion spring is quickly released by the stored elastic potential energy, providing a strong return force for the leak-proof cover 26. This ensures that the leak-proof cover 26 can tightly fit the outlet of the outlet pipe 23 at a very fast speed, effectively preventing any liquid from dripping from the outlet after the device stops dispensing liquid.

[0033] Please see Figure 3In order to ensure that the function of scraping off residual liquid and the pressing pumping action are synchronized, the top of the pressing rod 36 extends radially outward to form an extension 37. The extension 37 is adapted to the shape of the fitting groove 21. When the pressing rod 36 is pressed down, its outwardly extending extension 37 is completely embedded in the fitting groove 21, which increases the force-bearing area, makes it easier for the user to press, and improves stability and reduces shaking.

[0034] Please see Figure 2 To establish a transmission relationship between the pressing rod 36 and the scraping tube 24, the transmission plate 25 extends horizontally to the bottom of the receiving groove 32 at one end of the inner cavity of the pressing head 2, facilitating the scraping operation. The end of the transmission plate 25 near the inner cavity of the pressing head 2 is provided with meshing teeth that cooperate with the first rotating wheel 323. By setting the meshing teeth, a mechanical transmission relationship is established between the pressing rod 36 and the scraping tube 24, improving the transmission efficiency between them. To control the horizontal movement of the transmission plate 25, the first rotating wheel 323 and the second rotating wheel 324 are evenly arranged along the axial direction of the rotating rod 322, with the second rotating wheel 324 symmetrically positioned next to the first rotating wheel 323. On both sides, the rack 351 is correspondingly arranged with the second rotating wheel 324 and meshes with the second rotating wheel 324 to drive the transmission plate to move horizontally in a stable manner. In this embodiment, when the pressing rod 36 is pressed down, it drives the barrier plate 35 to move vertically downward. The rack 351 on the barrier plate 35 moves downward synchronously and engages with the second rotating wheel 324. Since the first rotating wheel 323 and the second rotating wheel 324 move coaxially, when the rack 351 moves downward, it drives the first rotating wheel 323 and the second rotating wheel 324 to rotate clockwise. The meshing teeth on the transmission plate 25 that engage with the first transmission wheel drive the transmission plate 25 to move forward.

[0035] Please see Figure 2 , Figure 3 In order to control the horizontal movement of the scraping tube 24 and the opening and closing of the leak-proof cover 26, the rack 251 is located behind the second transmission wheel 324. In this embodiment, the rack 251 is located behind the second transmission wheel 324 to ensure that when the hand presses, the second transmission wheel 324 moves clockwise, thereby driving the transmission plate 25 and the scraping tube 24 to move horizontally forward. When released, the second transmission wheel 324 moves counterclockwise, thereby driving the transmission plate 25 and the scraping tube 24 to move horizontally backward. This controls the scraping tube 24 to scrape the residual liquid on the inner wall of the liquid outlet tube 23 and the opening and closing of the leak-proof cover 26.

[0036] Please see Figure 7 The inner wall of the scraping tube 24 has a trapezoidal cross-section. The trapezoidal inner wall shape can form a natural guiding effect, so that when the emulsion flows in the tube, it can more smoothly converge to the outlet, further reducing turbulence, making the outlet speed faster and improving the outlet efficiency.

[0037] Example 2

[0038] For the sake of brevity, the parts that are the same as in Embodiment 1 will not be described again. The main focus here is on the structure that is different from Embodiment 1 of this utility model. The only difference between Embodiment 2 and Embodiment 1 is the shape of the cross-section of the inner wall of the scraping tube 24.

[0039] Please see Figure 6 In this embodiment, the inner wall of the scraping tube 24 has a rectangular cross-section. The rectangular inner wall has sharp edges and corners. Compared with the traditional circular inner wall, the wiping cloth and cleaning brush can better fit the four corners and four sides, and can cover more areas during cleaning, thereby effectively reducing the situation where emulsion residue dries and adheres to the tube wall.

[0040] In use, the palm presses down on the pressing head 2, causing it to move downwards. Simultaneously, the pressing rod 36 moves downwards, fully engaging the extension part 37 into the fitting groove. The pressing rod 36 drives the blocking plate 35 downwards, and the rack 351 on the blocking plate 35 moves downwards and engages with the second rotating wheel 324. Since the first rotating wheel 323 and the second rotating wheel 324 move coaxially, the downward movement of the rack 351 causes them to rotate clockwise. Because the meshing teeth on the transmission plate 24 tightly engage with the first rotating wheel 323, their rotational motion is converted into a horizontal forward movement of the transmission plate 25. The transmission plate 25 then pushes the scraping tube 23 horizontally, effectively scraping the liquid on the inner wall. Simultaneously, the horizontal forward movement of the scraping tube 24 opens the leak-proof cover 26 at the outlet. The leak-proof cover 26 has a guide groove 261 on its inner side. When the liquid is pumped out, it moves outward along the guide groove 261. When the hand is released, since the positioning rod 34 is not equipped with a return spring 341, the blocking plate 35 returns to its original position. When the rack 351 moves upward, it drives the first rotating wheel 323 and the second rotating wheel 324 to rotate counterclockwise. The rotational motion of the first rotating wheel 323 and the second rotating wheel 324 is converted into the horizontal backward movement of the transmission plate 25, which closes the leak-proof cover 26. When pressed, it scrapes out any liquid that may remain on the inner wall, preventing any residue from the outlet. When the hand is released, the leak-proof cover 26 closes to seal the outlet, preventing any liquid from dripping or flowing and forming residue.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A safety residual prevention pump head, characterized by, Includes a pump head body (1) for pumping liquids; Press head (2), the press head (2) is located on the top of the pump head body (1), the top of the press head (2) is provided with a fitting groove (21), the bottom of the fitting groove (21) is provided with a first channel (22), the outer wall of the press head (2) is provided with a liquid outlet pipe (23), the inner wall of the liquid outlet pipe (23) is movably fitted with a scraper pipe (24), the end of the scraper pipe (24) away from the outlet is provided with a transmission plate (25), the front end of the liquid outlet pipe (23) is provided with a leak-proof cover (26), the inner side of the leak-proof cover (26) is provided with a guide groove (261); The linkage scraping mechanism (3) includes a mounting base (31) located on the inner wall of the pressing head (2). The mounting base (31) has a receiving groove (32) and several reset grooves (33). The inner wall of the receiving groove (32) has mounting holes (321) on both sides. A rotating rod (322) is horizontally embedded between the mounting holes (321). A first rotating wheel (323) and several... A second rotating wheel (324) is provided. A positioning rod (34) is slidably provided in the reset groove (33). A reset spring (341) is embedded in the positioning rod (34). A baffle plate (35) is fixedly connected to the other end of the positioning rod (34) away from the reset groove (33). A pressing rod (36) is provided on the top of the baffle plate (35). The pressing rod (36) extends vertically upward through the first channel (22). Several racks (351) are fixedly connected to the bottom of the baffle plate (35).

2. The safety anti-residue pump head according to claim 1, wherein: The leak-proof cover (26) is hinged to the outer wall of the liquid outlet pipe (23), and a torsion spring is provided at the hinge point between the leak-proof cover (26) and the liquid outlet pipe (23).

3. The safety anti-residue pump head according to claim 1, wherein: The top of the pressing rod (36) extends radially outward to form an extension (37).

4. The safety anti-residue pump head according to claim 3, characterized in that: The extension (37) is adapted to the shape of the fitting groove (21).

5. The safety anti-residue pump head of claim 1, wherein: The transmission plate (25) extends horizontally to one end of the inner cavity of the pressing head (2) to the bottom of the receiving groove (32).

6. The safety anti-residue pump head according to claim 5, wherein: The transmission plate (25) has meshing teeth that cooperate with the first rotating wheel (323) at one end near the inner cavity of the pressing head (2).

7. The safety anti-residue pump head of claim 1, wherein: The first rotating wheel (323) and the second rotating wheel (324) are evenly arranged along the axis of the rotating rod (322), and the second rotating wheel (324) is symmetrically arranged on both sides of the first rotating wheel (323).

8. The safety anti-residue pump head according to claim 7, characterized in that: The rack (351) is correspondingly arranged with the second rotating wheel (324) and meshes with the second rotating wheel (324) for transmission.

9. The safety anti-residue pump head of claim 1, wherein: The rack (351) is located behind the second rotating wheel (324).

10. The safety anti-residue pump head of claim 1, wherein: The inner wall cross-section of the scraping tube (24) is either trapezoidal or rectangular.

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