Liquid piston pump
By using a design that combines a rotating body with a slider and a gear transmission system, the problem of unstable speed in traditional piston pumps when conveying viscous liquids is solved, achieving uniform soap solution pumping and gas mixing, thus meeting practical application requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU YOUPENG IND CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-23
AI Technical Summary
When traditional piston pumps are used to transport viscous liquids, the rate of change of the liquid chamber volume is unstable, resulting in large fluctuations in the output speed, especially in soap liquid transportation scenarios.
The design employs a rotating body and a slider, which converts the rotational motion into the linear reciprocating motion of the piston through a helical track. Combined with a gear transmission system, the rotating body is ensured to rotate at a constant speed, thus achieving uniform piston motion. The sliding cooperation between the helical track and the slider ensures the stable reciprocating motion of the piston body within the liquid chamber.
It achieves uniform pumping of soap solution with the same viscosity at the same pumping speed, improves the continuity and stability of the pumping liquid, adapts to different pumping speed requirements, and can be mixed with subsequent gas.
Smart Images
Figure CN224396633U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid variable displacement machinery, and in particular to a liquid piston pump. Background Technology
[0002] In the field of liquid conveying equipment, piston pumps are widely used because they can convey liquids of various viscosities, such as in soap solution conveying scenarios. However, traditional piston pumps mostly use a crank-connecting rod mechanism to drive the piston to reciprocate. As the crank rotates, the piston's speed changes with the crank angle, resulting in an unstable rate of change of the liquid chamber volume. Consequently, the pumped liquid, especially liquids with a certain viscosity like soap solution, exhibits large fluctuations in output speed. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a liquid piston pump that ensures soap solutions of the same viscosity can be pumped out at the same pumping speed.
[0004] According to a first aspect of the present invention, a liquid piston pump includes a housing, a piston body, a rotating body, and a slider. The housing has a built-in liquid cavity, and the bottom of the housing is provided with a liquid inlet and a liquid outlet. The piston body is placed inside the liquid cavity, and the piston body is hollow inside with its upper end open, allowing it to slide back and forth in the liquid cavity. The rotating body is placed inside the piston body, and its upper end is rotatably connected to the top of the housing. The rotating body is connected to a driving mechanism, which drives the rotating body to pivot at a constant speed around a fixed axis. A helical track is provided on the outer side of the rotating body from top to bottom. One end of the slider is connected to the inner wall of the piston body, and the other end is embedded in the helical track, with the slider and the helical track slidingly engaged.
[0005] The liquid piston pump according to the present invention has at least the following beneficial effects: by using a rotating body in conjunction with a slider, uniform liquid extraction and pumping are achieved, ensuring that soap solutions of the same viscosity can be pumped out at the same pumping speed and mixed with subsequent gas, thus meeting the actual use requirements.
[0006] According to some embodiments of this utility model, two spiral tracks are provided, the two spiral tracks have opposite directions of rotation, and the two ends of the two spiral tracks are connected to make the two spiral tracks communicate with each other.
[0007] According to some embodiments of the present invention, the driving mechanism includes a driving gear, a driven gear, and a transmission gear. The driving gear is connected to a drive motor; a rotating shaft is connected between the driven gear and the rotating body; the transmission gear meshes with the driving gear and the driven gear to enable the driving gear and the driven gear to engage in transmission.
[0008] According to some embodiments of the present invention, a transmission box is fixedly connected to the top of the housing, the driving gear, the driven gear and the transmission gear are built into the transmission box, and the drive motor and the transmission box are fixedly connected.
[0009] According to some embodiments of this utility model, the liquid inlet is equipped with a first shut-off valve so that the soap liquid can only flow into the liquid chamber from the outside; the liquid outlet is equipped with a second shut-off valve so that the soap liquid can only flow out of the liquid chamber from the outside.
[0010] According to some embodiments of the present invention, a rubber piston head is provided at the end of the piston body.
[0011] According to some embodiments of the present invention, the side wall of the rubber piston head is provided with at least one sealing ring, and the sealing ring abuts against the wall of the liquid cavity.
[0012] According to some embodiments of this utility model, the end face of the rubber piston head is spherical.
[0013] According to some embodiments of this utility model, a rotating hole is provided through the upper side wall of the piston body, and a cylinder is fixedly connected to the slider. The cylinder is inserted into the rotating hole and rotates with the rotating hole.
[0014] According to some embodiments of the present invention, the liquid cavity is fixedly connected to an inner shell, the piston body is sleeved on the surface of the inner shell, the inner shell is provided with a sliding groove, the sliding groove is provided along the length direction of the liquid cavity, the cylinder passes through the sliding groove and slides in cooperation with the sliding groove.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0017] Figure 1 This is a three-dimensional structural diagram of the liquid piston pump according to an embodiment of the present invention.
[0018] Figure 2 This is a cross-sectional view of the liquid piston pump according to an embodiment of the present invention.
[0019] Figure 3 This is a cross-sectional view of the liquid piston pump according to another embodiment of the present invention.
[0020] Figure 4This is a schematic diagram of the assembly structure of the inner shell, slider, and rotating body of the liquid piston pump according to an embodiment of the present invention.
[0021] Figure 5 This is a schematic diagram of the assembly structure of the slider and rotating body of the liquid piston pump according to an embodiment of the present invention.
[0022] 100, housing; 110, liquid chamber; 120, liquid inlet; 121, first shut-off valve; 130, liquid outlet; 131, second shut-off valve; 140, inner housing; 141, slide groove;
[0023] 200. Piston body; 210. Rubber piston head; 211. Sealing ring; 220. Rotary hole;
[0024] 300. Rotational body; 310. Spiral track;
[0025] 400, slider; 410, cylinder;
[0026] 500. Drive mechanism; 510. Driving gear; 520. Driven gear; 521. Rotating shaft; 530. Transmission gear; 540. Transmission box; 550. Drive motor; Detailed Implementation
[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0031] Reference Figure 1 , Figure 2 and Figure 3 The liquid piston pump of this utility model embodiment includes a housing 100, a piston body 200, a rotating body 300, and a slider 400. The housing 100 has a liquid cavity 110 inside, and the bottom of the housing 100 is provided with a liquid inlet 120 and a liquid outlet 130. The piston body 200 is built into the liquid cavity 110. The piston body 200 is hollow inside, and the upper end of the piston body 200 is open, allowing the piston body 200 to slide back and forth in the liquid cavity 110. The rotating body 300 is built into the piston body 200. The upper end of the rotating body 300 is rotatably connected to the top of the housing 100. The rotating body 300 is connected to a drive mechanism 500, which is used to drive the rotating body 300 to pivot at a constant speed around a fixed axis. A spiral track 310 is provided on the outer side of the rotating body 300 from top to bottom. One end of the slider 400 is connected to the inner sidewall of the piston body 200, and the other end is embedded in the spiral track 310. The slider 400 and the spiral track 310 are in sliding engagement.
[0032] In practical use, the drive mechanism 500 drives the rotating body 300 to rotate at a constant speed around a fixed axis, while the slider 400 slides within the helical track 310. Since the slider 400 is connected to the piston body 200, the helical structure of the helical track 310 converts the rotational motion of the rotating body 300 into the axial motion of the slider 400, which in turn drives the piston body 200 to reciprocate within the liquid chamber 110. When the piston body 200 slides upward, the volume of the liquid chamber 110 increases, and external soap solution flows in from the inlet 120; when the piston body 200 slides downward, the volume of the liquid chamber 110 decreases, and soap solution flows out from the outlet 130. Through the uniform rotation of the rotating body 300 and the cooperation between the helical track 310 and the slider 400, the reciprocating speed of the piston body 200 is made uniform, achieving uniform liquid extraction and pumping, ensuring that soap solution of the same viscosity is pumped out at the same speed, facilitating mixing with subsequent gas. In summary, by utilizing the helix angle of the spiral track 310, the circular motion of the rotating body 300 is converted into the linear reciprocating motion of the piston body 200 through the sliding cooperation between the slider 400 and the track. The uniform rotation ensures the stable movement speed of the piston body 200, achieving uniform liquid extraction and pumping. This ensures that soap solutions of the same viscosity can be pumped out at the same pumping speed and mixed with subsequent gas, meeting the actual application requirements.
[0033] In some embodiments, refer to Figure 5Two spiral tracks 310 are provided, with opposite rotation directions and their ends connected to ensure connectivity. The drive mechanism 500 drives the rotating body 300 to rotate constantly in one direction, thereby enabling the slider 400 to slide along the spiral tracks 310 and drive the piston body 200 in reciprocating motion. This allows the liquid chamber 110 to periodically draw in and discharge liquid, resulting in a uniform pumped soap solution that mixes smoothly with the subsequent gas in a proportional manner. It is worth noting that the piston body 200 can reciprocate without the rotating body 300 reversing, reducing the reversing action of the drive mechanism 500 and improving the continuity and stability of the pumping process.
[0034] As a further optimization of the above embodiments, refer to Figure 2 and Figure 3 The drive mechanism 500 includes a drive gear 510, a driven gear 520, and a transmission gear 530. The drive gear 510 is connected to a drive motor 550. A rotating shaft 521 connects the driven gear 520 and the rotating body 300. The transmission gear 530 meshes with the drive gear 510 and the driven gear 520 to ensure transmission between them. The high precision of the gear transmission ensures stable rotational speed of the rotating body 300, thereby ensuring uniform movement of the piston body 200 and improving pumping accuracy. The multi-gear transmission structure can adapt to different pumping speed requirements by adjusting the transmission ratio. Based on the rigid contact of the gear meshing transmission, power transmission is achieved through the force transmission between the teeth. The transmission ratio is controlled by the gear tooth ratio to ensure uniform rotation of the rotating body 300.
[0035] Preferably, in order to ensure the normal operation of the drive gear 510, driven gear 520, and transmission gear 530 of the drive mechanism 500, and to protect the drive gear 510, driven gear 520, and transmission gear 530 from contamination by dust, soap residue, etc., refer to Figure 2 and Figure 3 A transmission box 540 is fixedly connected to the top of the housing 100. The driving gear 510, driven gear 520, and transmission gear 530 are built into the transmission box 540. The drive motor 550 is fixedly connected to the transmission box 540. The sealed transmission box 540 protects the driving gear 510, driven gear 520, and transmission gear 530, isolating them from the influence of the external environment on the transmission system.
[0036] In some embodiments, refer to Figure 2The inlet 120 has a built-in first shut-off valve 121 to ensure that soap solution can only flow into the liquid chamber 110 from the outside; the outlet 130 has a built-in second shut-off valve 131 to ensure that soap solution can only flow out of the liquid chamber 110 from the outside. In actual use, when the piston body 200 moves upward and the liquid chamber 110 is under negative pressure, the first shut-off valve 121 opens, allowing soap solution to flow into the liquid chamber 110 from the outside, and the second shut-off valve 131 closes to prevent backflow of liquid in the liquid chamber 110; when the piston body 200 moves downward and the liquid chamber 110 is pressurized, the second shut-off valve 131 opens, allowing soap solution to flow out, and the first shut-off valve 121 closes to prevent backflow of liquid to the outside, thus realizing unidirectional liquid intake and discharge of the liquid chamber 110 and avoiding backflow of liquid from affecting pump efficiency and uniformity.
[0037] In some embodiments, refer to Figure 2 and Figure 3 A rubber piston head 210 is provided at the end of the piston body 200. This enhances the sealing between the piston body 200 and the liquid chamber 110, reducing soap leakage. Furthermore, at least one sealing ring 211 is provided on the side wall of the rubber piston head 210, and the sealing ring 211 abuts against the wall of the liquid chamber 110. This further improves the sealing performance; even if the rubber piston head 210 is slightly worn, the sealing ring 211 can still ensure a seal, reducing the risk of leakage. Preferably, the end face of the rubber piston head 210 is spherical. This is used to guide the soap in the liquid chamber 110 and prevent soap accumulation.
[0038] In some embodiments, refer to Figure 3 A rotating hole 220 is provided through the upper side wall of the piston body 200. A cylinder 410 is fixedly connected to the slider 400. The cylinder 410 is inserted into the rotating hole 220 and rotates in cooperation with the rotating hole 220. The rotatable slider 400 can be adapted to the helical track 310 with an inclination angle, reducing motion interference between the slider 400 and the rotating body 300, making the slider 400 move more flexibly and reducing component wear.
[0039] In some embodiments, refer to Figure 3 and Figure 4 The liquid cavity 110 is fixedly connected to the inner shell 140. The piston body 200 is sleeved on the surface of the inner shell 140. The inner shell 140 is provided with a sliding groove 141, which is arranged along the length direction of the liquid cavity 110. The cylinder 410 passes through the sliding groove 141 and slides in cooperation with the sliding groove 141. During the rotation of the rotating body 300, the helical structure of the helical track 310 converts the rotational motion of the rotating body 300 into the axial motion of the slider 400. The cylinder 410 on the slider 400 slides along the length direction of the sliding groove 141, which restricts the movement path of the cylinder 410. This ensures that the piston body 200 can only move along the axial direction of the liquid cavity 110, preventing the piston body 200 from deviating or rotating during movement, and ensuring the stability and accuracy of the movement.
[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A liquid piston pump, characterized in that, include: The housing (100) has a built-in liquid cavity (110), and the bottom of the housing (100) is provided with a liquid inlet (120) and a liquid outlet (130); A piston body (200) is built into the liquid cavity (110). The piston body (200) is hollow inside and the upper end of the piston body (200) is open. The piston body (200) can slide back and forth in the liquid cavity (110). A rotating body (300) is built inside the piston body (200). The upper end of the rotating body (300) is rotatably connected to the top of the housing (100). The rotating body (300) is connected to a driving mechanism (500). The driving mechanism (500) is used to drive the rotating body (300) to pivot at a constant speed around a fixed axis. A spiral track (310) is provided on the outer side of the rotating body (300) from top to bottom. The slider (400) is connected at one end to the inner wall of the piston body (200) and at the other end to the spiral track (310). The slider (400) and the spiral track (310) are in sliding engagement.
2. The liquid piston pump according to claim 1, characterized in that, Two spiral tracks (310) are provided, the two spiral tracks (310) rotate in opposite directions, and the two ends of the two spiral tracks (310) are connected to each other so that the two spiral tracks (310) are connected.
3. The liquid piston pump according to claim 1, characterized in that, The drive mechanism (500) includes: The drive gear (510) is connected to the drive motor (550); A rotating shaft (521) is connected between the driven gear (520) and the rotating body (300); The transmission gear (530) meshes with the driving gear (510) and the driven gear (520) to enable the driving gear (510) and the driven gear (520) to engage in transmission.
4. The liquid piston pump according to claim 3, characterized in that, A transmission box (540) is fixedly connected to the top of the housing (100). The driving gear (510), driven gear (520) and transmission gear (530) are built into the transmission box (540). The drive motor (550) is fixedly connected to the transmission box (540).
5. The liquid piston pump according to claim 1, characterized in that, The inlet (120) is equipped with a first shut-off valve (121) so that soap liquid can only flow into the liquid chamber (110) from the outside; the outlet (130) is equipped with a second shut-off valve (131) so that soap liquid can only flow out of the liquid chamber (110) from the outside.
6. The liquid piston pump according to claim 1, characterized in that, The piston body (200) is provided with a rubber piston head (210) at its end.
7. The liquid piston pump according to claim 6, characterized in that, The side wall of the rubber piston head (210) is provided with at least one sealing ring (211), and the sealing ring (211) abuts against the wall of the liquid cavity (110).
8. The liquid piston pump according to claim 6, characterized in that, The end face of the rubber piston head (210) is spherical.
9. The liquid piston pump according to claim 1, characterized in that, The upper sidewall of the piston body (200) is provided with a rotating hole (220). The slider (400) is fixedly connected to a cylinder (410). The cylinder (410) is inserted into the rotating hole (220) and rotates with the rotating hole (220).
10. The liquid piston pump according to claim 9, characterized in that, The liquid cavity (110) is fixedly connected to the inner shell (140), the piston body (200) is sleeved on the surface of the inner shell (140), the inner shell (140) is provided with a sliding groove (141), the sliding groove (141) is arranged along the length direction of the liquid cavity (110), the cylinder (410) passes through the sliding groove (141) and slides in cooperation with the sliding groove (141).