A multi-hole valveless plunger pump

Abstract

The utility model relates to fluid control valve equipment field, especially a kind of porous valveless plunger pump, including plunger sleeve and plunger, one end of plunger can be inserted plunger sleeve and rotate in plunger sleeve, plunger sleeve is spaced apart and is provided with import, export and compensation port along its circumference, and the end of plunger that plunger extends into plunger sleeve is equipped with plunger gap;Plunger and plunger sleeve are thus arranged, so that plunger moves in the mode that 180 ° is rotated when moving from inside to outside, 180 ° is rotated when moving from outside to inside, when plunger moves outward, plunger gap is connected with export and plunger seals export correspondingly;When plunger moves inward, the discharge rotation angle range of plunger gap and export communication when plunger moves inward is less than 180 °, and plunger gap is connected with compensation port when plunger seals export.The utility model optimizes the rotation angle cooperation relationship of compensation port, plunger and compensation port and import export by setting, effectively solve the problems in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of fluid control valve equipment, and in particular to a multi-hole valveless plunger pump. Background Technology

[0002] Valveless plunger pumps have seen increasing applications in recent years due to their quantitative and stable liquid supply, making them increasingly popular in food processing applications requiring precise liquid dispensing. Existing valveless plunger pumps often feature structures like the high-precision, freely adjustable flow valveless plunger pump disclosed in patent CN222558719U. This design utilizes a notch on the plunger, which reciprocates linearly in conjunction with rotation, alternating between the notch and the plunger sleeve's inlet and outlet to facilitate liquid inflow and outflow. However, the applicant has observed that during outflow, the plunger moves from its outer limit position to its inner limit position. This linear movement involves a process of zero speed, acceleration to maximum speed, and deceleration to zero, resulting in a change in the outflow velocity. Consequently, the liquid flowing from the plunger pump exhibits a characteristic of higher velocity in the first half and lower velocity in the second half. This characteristic has caused challenges in some applications of valveless plunger pumps.

[0003] In the production of flavored beads, for example, the beads are spheres composed of a core material containing various active ingredients blended with an internal base oil and an outer gelatinous shell. The gelatinous shell is obtained by drying water-based gelatin, pectin, etc. The beads are processed using a dropper machine. The basic principle of the dropper machine is that a core material channel 9 is located in the middle, and a gelatin channel 10 is on the outside. The outer layer is molten gelatin. The core material is intermittently supplied and enveloped by the continuously flowing gelatin, falling into a coolant. Due to surface tension, it shrinks into a sphere of inner core material and outer gelatinous body. After drying, the gelatin is dehydrated and hardened to obtain the finished product. A valveless plunger is used to intermittently supply the core material to the core material channel 9. In actual production of flavored beads, the applicant found that the gelatinous layer of the beads often mixes with the oil-based core material, affecting the quality of the bead forming. After analysis, it was determined that the cause was the characteristics of the valveless plunger pump. As a result, the first half of the core material flowing into the adhesive (the liquid section with gradually increasing flow rate) clumps up in the adhesive, while the second half of the core material (the liquid section with gradually decreasing flow rate) easily comes into contact with the adhesive and remains in the adhesive in a linear or dotted manner. This results in the core material being mixed into the adhesive layer after it is formed.

[0004] As can be seen from the above-mentioned application examples, the existing valveless plunger pump has the characteristic of a faster speed in the first half and a slower speed in the second half, which makes it difficult to match the actual working conditions in practical applications. Therefore, the existing valveless plunger pump needs to be improved. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a multi-hole valveless plunger pump, which effectively solves the problems existing in the prior art by optimizing the setting of the compensation port, the rotation angle matching between the plunger and the compensation port and the inlet and outlet.

[0006] To address the aforementioned problems, this utility model provides a multi-hole valveless plunger pump, comprising a plunger sleeve and a plunger. One end of the plunger can be inserted into the plunger sleeve and rotate within it. The plunger sleeve is circumferentially spaced with an inlet, an outlet, and a compensation port. The end of the plunger extending into the plunger sleeve has a plunger notch. The plunger and plunger sleeve are configured such that when the plunger moves in a manner that moves from the inside out with a 180° rotation and from the outside in with a 180° rotation, when the plunger moves outward, the plunger notch connects to the inlet or connects the compensation port and the inlet, and the plunger closes the outlet. When the plunger moves inward, the rotation angle range of the liquid discharge when the plunger moves inward between the plunger notch and the outlet is less than 180°, and when the plunger closes the outlet, the plunger notch connects to the compensation port.

[0007] Furthermore, the plunger and the sleeve are configured such that when the plunger moves inward from its outermost limit position, the plunger rotates to the range of discharge rotation angles; after the plunger moves inward to rotate out of the range of discharge rotation angles, the plunger closes the outlet and the notch section of the plunger connects to the compensation port.

[0008] Furthermore, the plunger and the sleeve are configured such that when the plunger moves to its innermost limit position, the plunger rotates to the middle region of the compensation rotation angle range where the compensation port and the plunger notch are connected; the plunger sleeve is connected to a solution storage container in the compensation port.

[0009] Furthermore, when the plunger notch rotates from being connected to the compensation port to being connected to the inlet, the compensation rotation angle range of the plunger notch connected to the compensation port and the liquid inlet rotation angle range of the plunger notch connected to the inlet partially overlap.

[0010] Alternatively, the plunger and the sleeve are configured such that when the plunger moves inward from its outermost limit position, the plunger closes the outlet and the notch section of the plunger connects to the compensation port; after the plunger moves inward to a set rotation angle, it enters the discharge rotation angle range.

[0011] Furthermore, the plunger and the sleeve are configured such that when the plunger is at its outermost limit position, it rotates to the middle region of the compensation rotation angle range where the compensation port and the plunger notch are connected; the plunger sleeve is connected to a solution storage container in the compensation port.

[0012] Furthermore, when the plunger notch rotates from being connected to the inlet to being connected to the compensation port, the liquid inlet rotation angle range of the plunger notch connected to the inlet and the compensation rotation angle range of the plunger notch connected to the compensation port partially overlap.

[0013] Furthermore, the sum of the central angle of the plunger notch edge and the central angle of the outlet edge is greater than or equal to 45° and less than or equal to 130°.

[0014] The beneficial effect of this utility model is that by optimizing the setting of the compensation port, the plunger and the rotation angle matching relationship between the compensation port and the inlet and outlet, the problems existing in the prior art are effectively solved. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a cross-sectional structural diagram of a scented bead processing equipment used in this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the plunger sleeve and the plunger after separation according to an embodiment of the present invention.

[0018] Figure 3 for Figure 2 The illustrated embodiment shows corresponding schematic diagrams of the plunger at different moving positions (the vertical axis represents the linear moving speed of the plunger, and the horizontal axis represents the linear moving position and rotation angle of the plunger), and a cross-sectional structural schematic diagram of the corresponding position at the outlet.

[0019] Figure 4 for Figure 3 The illustrated embodiment shows a schematic diagram of the plunger's movement during its inward movement.

[0020] Figure 5 This is a cross-sectional structural diagram of the plunger at the inlet position when the plunger rotates to the liquid inlet rotation angle range, and a corresponding schematic diagram of the plunger movement position, which is another embodiment of this utility model.

[0021] Among them: 1. plunger; 2. plunger sleeve; 3. inlet; 4. outlet; 5. compensation port; 6. plunger notch; 7. discharge rotation angle range; 8. inlet rotation angle range; 9. core material channel; 10. adhesive channel; 11. compensation rotation angle range. Detailed Implementation

[0022] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0023] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0024] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation 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.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0026] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] In this utility model, such as Figure 1-5As shown, a multi-hole valveless plunger pump is provided, including a plunger sleeve 2 and a plunger 1. One end of the plunger 1 can be inserted into the plunger sleeve 2 and rotate within the plunger sleeve 2. The plunger sleeve 2 is provided with an inlet 3, an outlet 4, and a compensation port 5 spaced apart along its circumference. The end of the plunger 1 extending into the plunger sleeve 2 is provided with a plunger notch 6. The plunger 1 and the plunger sleeve 2 are arranged such that when the plunger 1 moves in a manner that moves from the inside out with a 180° rotation and moves from the outside in with a 180° rotation, when the plunger 1 moves outward, the plunger notch 6 connects to the inlet or connects the compensation port and the inlet, and the plunger 1 closes the outlet 4; when the plunger 1 moves inward, the discharge rotation angle range 7 in which the plunger notch 6 connects to the outlet 4 is less than 180°, and when the plunger 1 closes the outlet 4, the plunger notch 6 connects to the compensation port 5.

[0028] In use, the plunger pump of this invention can connect the inlet 3 to an external liquid supply device and the outlet 4 to an external liquid-using component. When the plunger 1 moves outward from its innermost limit position, it rotates synchronously. During this process, the plunger 1 approaches and closes the outlet 4, and the plunger notch 6 connects to the inlet 3, allowing liquid to enter the plunger sleeve 2. When the plunger 1 moves inward from its outermost limit position, because the rotation angle 7 between the plunger notch 6 and the outlet 4 is less than 180°, the plunger 1 moves inward, pushing the liquid out of the plunger sleeve 2. During part of the downward stroke of the plunger 1, the liquid is pushed out through the outlet 4; during another part of the downward stroke, the liquid passes through the plunger notch 6 and connects to the compensation port 5 before being pushed out through the compensation port 5.

[0029] This invention relates to a plunger pump. By providing a compensation port 5 between the inlet 3 and the outlet 4, and by limiting the discharge angle range connecting the plunger notch 6 and the outlet 4, only a portion of the liquid can be discharged during the downward stroke of the plunger 1. The compensation port 5 also allows liquid to be forced into the compensation port 5 when the plunger 1 blocks the outlet 4 during its downward stroke. This design ensures that only a portion of the liquid during the downward stroke of the plunger 1 can be discharged from the outlet 4. Compared to the discharge process of existing multi-hole valveless plunger pumps, this invention allows liquid within a set speed range to be discharged from the outlet 4.

[0030] In a specific embodiment, the plunger 1 and the plug sleeve are arranged such that when the plunger 1 moves inward from its outermost limit position, the plunger 1 rotates to the discharge rotation angle range 7; after the plunger 1 moves inward to rotate out of the discharge rotation angle range 7, the plunger 1 closes the outlet 4 and the plunger notch 6 connects to the compensation port 5.

[0031] Specific examples Figures 2 to 4 As shown, in Figure 3In the first view, when the plunger 1 moves to its outermost limit position, as the plunger 1 rotates further in the set rotation direction, the edge of the plunger notch 6 begins to rotate into the communicating region of the outlet 4, and the edge of the plunger notch 6 rotates past the inlet 3, and the curved surface of the plunger 1 closes the inlet 3 and the compensation port 5. Figure 3 In the second view, the vertical solid line in the coordinate graph represents the current position of the plunger (the actual position in the first attached figure is the outer limit position). When the plunger notch 6 and the outlet 4 are connected and the plunger 1 closes the outlet 4 on the curved surface of the plunger 1, the plunger 1 has not yet rotated 180° and the plunger 1 has not yet moved to the innermost limit position. The plunger notch 6 begins to connect with the compensation port 5 and presses the liquid in the plunger sleeve 2 into the compensation port 5.

[0032] By configuring it in this way, the plunger 1 supplies liquid outward as it moves inward from its outer limit position. When the plunger 1 moves to the rotation angle range for discharging liquid (when the plunger 1 moves at a set speed), the outlet 4 is blocked, ensuring that the end of the liquid discharged from the outlet 4 maintains a certain speed. In specific applications, this can be applied to pelletizing machines. With the plunger pump of this application providing the core material, the end of the core material can still maintain a certain speed as it flows into the glue (preferably, the discharging angle range can be set in the middle of the linear movement of the plunger 1, so that the end of the core material maintains a higher speed), thus preventing the phenomenon of the core material remaining in the glue shell due to the slow flow rate at the end. In an optional embodiment, it can also be applied to toy water guns, where the plunger 1 is pressed down at the front part of the water gun, resulting in a gradually accelerating dotted water ball pattern, preventing a slow, string-like water flow at the end.

[0033] exist Figure 3 In the illustrated embodiment, to further specify the structure of this utility model, the plunger 1 and the sleeve are arranged such that when the plunger 1 moves to the innermost limit position, the plunger 1 rotates to the middle region of the compensation rotation angle range that connects the compensation port 5 and the plunger notch 6; the plunger sleeve 2 is connected to a solution storage container in the compensation port 5.

[0034] like Figure 3 As shown in the third view, this allows liquid to be forced into the solution storage container through the compensation port 5 during the inward movement of the plunger 1. When the plunger 1 begins to move outward at its innermost limit position, the liquid forced into the solution storage container can be drawn back into the plunger sleeve 2 through the compensation port 5. Optionally, a variable liquid bladder or a sluice can be used as the solution storage container.

[0035] exist Figure 3In the illustrated embodiment, the inlet is closed when the plunger notch rotates to communicate with the compensation port, and the compensation port is closed when the plunger notch rotates to communicate with the inlet. This is not intended to limit the present invention. In alternative embodiments, such as... Figure 5 As shown, regarding the structure of this utility model, more specifically, when the plunger notch 6 rotates from being connected to the compensation port 5 to being connected to the inlet 3, the compensation rotation angle range of the plunger notch 6 connected to the compensation port 5 and the liquid inlet rotation angle range 8 of the plunger notch 6 connected to the inlet 3 partially overlap.

[0036] Compared to Figure 3 In the embodiment shown, the compensation port is expanded outwards towards the edge of the inlet, so that when the plunger 1 rotates to the end of the compensation rotation angle range, the plunger notch 6 is simultaneously connected to the compensation port 5 and the inlet 3. This can prevent the dry pumping condition from occurring after the liquid in the solution storage container is emptied.

[0037] exist Figure 2 and Figure 3 In the illustrated embodiment, the inlet, outlet, and compensation port are located at the same cross-sectional position. This is not intended to limit the present invention. In feasible embodiments, the inlet, compensation port, and outlet may also be arranged alternately.

[0038] exist Figure 3 In the illustrated embodiment, the plunger moves inward from its outer limit position to force liquid into the outlet. This is not a limitation of the present invention. In alternative embodiments, the structure of the present invention can be configured such that the plunger 1 and the plug sleeve are arranged such that when the plunger 1 moves inward from its outermost limit position, the plunger 1 closes the outlet 4 and the plunger notch 6 connects to the compensation port 5; after the plunger 1 moves inward to a set rotation angle, it enters the discharge rotation angle range 7.

[0039] Specific embodiments can be referred to. Figure 3 Adjustments are made to the attached diagram, moving the outlet position by a certain angle along the plunger rotation direction and moving the compensation port to the upper side of the outlet. When the plunger 1 moves to its outermost limit position, further rotation in the set rotation direction of the plunger 1 connects the plunger notch 6 with the compensation port 5, and the curved surface of the plunger 1 seals the outlet 4. At this time, the liquid in the initial stage of the plunger 1 flows out through the compensation port 5. When the plunger 1 rotates further by a set angle (e.g., after the set angle is 90°) into the discharge rotation angle range 7, the edge of the plunger notch 6 begins to connect with the outlet 4, and the plunger 1 seals the inlet 3 and the compensation port 5, and the outlet 4 begins to supply liquid outward.

[0040] This configuration ensures that as plunger 1 moves inward from its outer limit position, it forces liquid into compensation port 5. When plunger 1 moves out of the compensation rotation angle range (plunger 1 moves at a set speed) and into the discharge rotation angle range, the compensation port is blocked, maintaining a certain speed at the beginning of the liquid discharged from outlet 4. When plunger 1 moves inward to its inner limit position and the edge of the rotating plunger notch 6 contacts outlet 4 (plunger 1 is about to close outlet 4), the final speed of the liquid discharged from outlet 4 is low (approaching 0), resulting in a string-like discharge of the liquid. In specific applications, this can be used in the processing of stick-shaped sandwich foods. This plunger pump provides the core material, allowing it to be linearly distributed after entering the adhesive. Compared to existing plunger pump liquid supply methods, this reduces the problem of excessive local core material volume caused by clumping in the core material at the beginning of the discharge (low speed at the beginning of the discharge, and clumping in the middle of the discharge as it catches up with the beginning).

[0041] In a preferred embodiment, more specifically regarding the structure of this utility model, the plunger 1 and the sleeve are arranged such that when the plunger 1 is at its outermost limit position, it rotates to the middle region of the compensation rotation angle range where the compensation port 5 and the plunger notch 6 are connected; the plunger sleeve 2 is connected to a solution storage container at the compensation port 5.

[0042] Specifically, this allows liquid to be forced into the solution storage container through the compensation port 5 during the inward movement of the plunger 1. Before the plunger 1 begins to move inward at its outermost limit position, the liquid forced into the solution storage container can be drawn back into the plunger sleeve 2 through the compensation port 5. Optionally, a variable liquid bladder or a sluice can be used as the solution storage container.

[0043] When the plunger notch 6 rotates from being connected to the inlet 3 to being connected to the compensation port 5, the liquid inlet rotation angle range 8 of the plunger notch 6 connected to the inlet 3 and the compensation rotation angle range of the plunger notch 6 connected to the compensation port 5 partially overlap.

[0044] With this configuration, when the plunger 1 rotates to the end of the liquid suction rotation angle range, the plunger notch 6 is simultaneously connected to the compensation port 5 and the inlet 3. At this time, liquid from the inlet 3 and liquid from the compensation port 5 can be sucked in at the same time to prevent the dry pumping condition from occurring after the solution storage container is emptied.

[0045] exist Figure 3In the illustrated embodiment, only one compensation port is provided, which can utilize the liquid expelled during the later stage of the plunger's inward movement. This is not intended to limit the present invention. In optional embodiments, multiple compensation ports can be provided, such as compensation ports on both sides of the outlet. In this case, the low-speed liquid near the inner and outer limit positions during the plunger's inward movement can be discharged through the compensation port, thus utilizing the liquid in the middle stage of the plunger's inward movement.

[0046] In the illustrated embodiment, to further specify the structure of this utility model, the sum of the central angle of the plunger notch edge and the central angle of the outlet edge is greater than or equal to 45° and less than or equal to 130°.

[0047] It should be noted that the improvement of this utility model lies in the fitting structure between the plunger sleeve 2 and the plunger 1. The external pipeline connection structure of the driving component, inlet and outlet of the plunger 1 is not restricted or improved. Those skilled in the art can implement it according to other feasible structural components.

[0048] It should be noted that the plunger described in this utility model moves in a manner that involves moving from the inside out while rotating 180°, and moving from the outside in while rotating 180°. This refers to the fixed reciprocating movement and rotational coordination of the plunger in a plunger pump. In a specific embodiment, the cast stone rotates at a uniform speed, and the linear movement of the plunger is shown in the attached figure. Figure 3 Move as shown.

[0049] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0050] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A multi-hole valveless plunger pump, comprising a plunger sleeve and a plunger, wherein one end of the plunger is capable of being inserted into and rotatable within the plunger sleeve, characterized in that, The plunger sleeve is provided with an inlet, an outlet and a compensation port spaced apart along its circumference, and the end of the plunger that extends into the plunger sleeve is provided with a plunger notch; The plunger and the plunger sleeve are arranged such that when the plunger moves in a manner that it moves from the inside out with a 180° rotation and from the outside in with a 180° rotation, When the plunger moves outward, the plunger notch connects to the inlet or the compensation port and the inlet, and the plunger closes the outlet; When the plunger moves inward, the range of the discharge rotation angle between the plunger notch and the outlet is less than 180° when the plunger moves inward, and the plunger notch is connected to the compensation port when the plunger closes the outlet.

2. The multi-hole valveless pistor pump according to claim 1, characterized in that The plunger and the sleeve are configured such that when the plunger moves inward from its outermost limit position, the plunger rotates to the range of the liquid discharge rotation angle. After the plunger moves inward to the rotation angle range for discharging liquid, the plunger closes the outlet and the plunger notch connects to the compensation port.

3. The multi-hole valveless pistor pump according to claim 2, characterized in that The plunger and the sleeve are configured such that when the plunger moves to its innermost limit position, the plunger rotates to the middle region of the compensation rotation angle range where the compensation port and the plunger notch are connected; the plunger sleeve is connected to a solution storage container through the compensation port.

4. The multi-hole valveless pistor pump of claim 2, wherein, When the plunger notch rotates from being connected to the compensation port to being connected to the inlet, the compensation rotation angle range of the plunger notch connected to the compensation port and the liquid inlet rotation angle range of the plunger notch connected to the inlet partially overlap.

5. The multi-hole valve-less plunger pump according to claim 1, wherein, The plunger and the sleeve are configured such that when the plunger moves inward from its outermost limit position, the plunger closes the outlet and the plunger notch connects to the compensation port. The plunger moves inward to a set rotation angle and then enters the discharge rotation angle range.

6. The multi-hole valve-less plunger pump according to claim 5, characterized in that The plunger and the sleeve are configured such that when the plunger is at its outermost limit position, it rotates to the middle region of the compensation rotation angle range where the compensation port and the plunger notch are connected; the plunger sleeve is connected to a solution storage container at the compensation port.

7. The multi-hole valve-less plunger pump according to claim 6, characterized in that When the plunger notch rotates from being connected to the inlet to being connected to the compensation port, the liquid inlet rotation angle range of the plunger notch connected to the inlet and the compensation rotation angle range of the plunger notch connected to the compensation port partially overlap.

8. The multi-hole valve-less plunger pump of claim 1, wherein, The sum of the central angle of the plunger notch edge and the central angle of the outlet edge is greater than or equal to 45° and less than or equal to 130°.

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