Rotary plunger pump volume adjustment device, plunger pump and plunger pump suction system

Abstract

This application relates to the field of rotary piston pump technology, specifically to a rotary piston pump volume adjustment device, a piston pump, and a piston pump injection system. The volume adjustment device includes a frame, a fixed sleeve, a rotating shaft base, and a drive assembly. The fixed sleeve has a connecting structure for engaging with the rotary piston pump head. The rotating shaft base is mounted in a sliding groove on the fixed sleeve. The drive assembly drives the rotating shaft base to reciprocate. In this application, the drive assembly drives the rotating shaft base to reciprocate, causing the fixed sleeve and the pump head on the fixed sleeve to swing back and forth relative to the frame and pump body, thereby changing the tilt angle of the pump head relative to the pump body. This precise mechanical transmission method can accurately control the swing angle of the pump head, thus achieving precise adjustment of the rotary piston pump volume.

Description

Technical Field

[0001] This application relates to the field of rotary piston pump technology, and more specifically, to a rotary piston pump volume adjustment device, a piston pump, and a piston pump injection system. Background Technology

[0002] A rotary piston pump is a precision metering pump. When the axis of the inner sleeve of the pump head and the axis of the rotary motor in the pump body are at a certain angle, the plunger extends and retracts once with each rotation of the motor, completing one pumping and discharging cycle. The volume of liquid pumped or discharged (i.e., the pump volume) is fixed. The larger the angle between the plunger axis and the motor shaft, the longer the plunger's extension and retraction stroke, and thus the greater the amount of liquid pumped or discharged per revolution, and vice versa. To modify or adjust the pump volume, simply change the angle between the axis of the inner sleeve of the pump head and the axis of the rotary motor.

[0003] Adjusting the pumping volume of a rotary plunger pump is primarily achieved manually by adjusting the pump head's swing angle or various adjustment mechanisms within the pump's structure, with liquid injection verification performed simultaneously during adjustment. This process is time-consuming, inconvenient, and prone to inaccurate manual adjustments requiring repeated attempts, resulting in significant errors and poor pump consistency. Utility Model Content

[0004] The purpose of this application is to provide a rotary plunger pump volume adjustment device, a plunger pump, and a plunger pump liquid injection system. The rotary plunger pump volume adjustment device can accurately adjust the volume of the plunger pump and improve the working efficiency of adjusting the volume of the plunger pump.

[0005] To achieve the above objectives, in a first aspect, this application provides a rotary piston pump volume adjustment device, comprising:

[0006] A frame, on which a rotary plunger pump body mounting position is provided;

[0007] A fixed sleeve is provided with a connecting structure for cooperating with the rotary plunger pump head, and a sliding groove is provided on the fixed sleeve;

[0008] A rotating shaft base is installed at the sliding groove of the fixed sleeve, and the rotating shaft base is rotatable relative to the fixed sleeve and can slide along the sliding groove;

[0009] A drive assembly is provided to drive the rotating shaft base to reciprocate. The reciprocating movement of the rotating shaft base causes the fixed sleeve and the pump head on the fixed sleeve to swing back and forth relative to the frame and the pump body, so as to change the tilt angle of the pump head relative to the pump body, thereby adjusting the volume of the rotary piston pump.

[0010] In an optional embodiment, the rotating shaft base includes a seat and a rotating shaft. The seat is connected to the drive assembly for transmission, and the seat is fixedly connected to the rotating shaft. The rotating shaft is installed in the sliding groove.

[0011] In an optional embodiment, a bearing is fitted onto the rotating shaft, and the bearing engages with the wall of the sliding groove.

[0012] In an optional embodiment, the fixing sleeve includes a connecting sleeve body and a rotating shaft fixing block body. The connecting structure is disposed on the connecting sleeve body. The rotating shaft fixing block body has a U-shaped structure and is fixedly installed on the connecting sleeve body. A C-shaped groove is provided on the side wall of the rotating shaft fixing block body near the connecting sleeve body. The groove wall of the C-shaped groove and the side wall of the connecting sleeve body define the sliding fit groove.

[0013] In an optional embodiment, the connecting sleeve is provided with a locking threaded hole and a bolt disposed in the locking threaded hole to lock the pump head and the connecting sleeve.

[0014] In an optional embodiment, the frame includes a first plate, a second plate, and a third plate. The second plate connects the first plate and the third plate to form a U-shaped frame. The second plate has a pump mounting position, the first plate has a drive assembly mounting position, and the third plate has an operation through hole.

[0015] In an optional embodiment, the drive assembly includes a threaded screw and a first drive motor, the first drive motor being mounted on the frame, one end of the threaded screw being fixedly connected to the output shaft of the first drive motor, and the other end of the threaded screw being threadedly engaged with the rotating shaft base.

[0016] In an optional embodiment, the drive assembly includes a rack, a gear, and a second drive motor. The second drive motor is mounted on the frame, the gear is fixedly connected to the output shaft of the second drive motor, the rack is slidably mounted on the frame, the gear meshes with the rack, and the rack is hinged to the shaft base. The forward and reverse rotation of the second drive motor drives the gear to rotate in the forward and reverse directions, and the forward and reverse rotation of the gear drives the rack and the shaft base to reciprocate.

[0017] Secondly, this application provides a plunger pump, including a pump body, a pump head, and a rotary plunger pump volume adjustment device as described in any of the foregoing embodiments.

[0018] Thirdly, this application provides a plunger pump injection system, including a control component, an actual volume acquisition component, and a plunger pump as described in the foregoing embodiments. The control component is electrically connected to a drive component and the actual volume acquisition component. Based on the actual volume of the plunger pump obtained by the actual volume acquisition component, the control component controls the drive component to adjust the volume of the rotary plunger pump to a target volume.

[0019] In this application, a drive assembly drives the rotating shaft base to reciprocate, which in turn causes the fixed sleeve and the pump head on the fixed sleeve to oscillate relative to the frame and pump body, thereby changing the tilt angle of the pump head relative to the pump body. This precise mechanical transmission method can accurately control the oscillation angle of the pump head, thus achieving precise adjustment of the volume of the rotary piston pump. The automated adjustment method avoids errors caused by individual differences and operator skill levels during manual adjustment, significantly reducing volume errors between different rotary piston pumps and improving product consistency and quality stability.

[0020] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure from one perspective of one embodiment of the rotary piston pump volume adjustment device provided in this application;

[0023] Figure 2 A schematic diagram of the structure of one embodiment of the rotary piston pump volume adjustment device and piston pump provided in this application;

[0024] Figure 3 A schematic diagram of the structure from one perspective of one embodiment of the connecting sleeve of the rotary piston pump volume adjustment device provided in this application;

[0025] Figure 4 A schematic structural view of another embodiment of the connecting sleeve of the rotary piston pump volume adjustment device provided in this application;

[0026] Figure 5 A schematic diagram of the structure from one perspective of one embodiment of the rotating shaft fixing block of the rotary piston pump volume adjustment device provided in this application;

[0027] Figure 6 A schematic diagram of the structure of the fixing sleeve and rotating shaft base of one embodiment of the rotary piston pump volume adjustment device provided in this application;

[0028] Figure 7 A schematic diagram of the structure of one embodiment of the rotating shaft base of the rotary piston pump volume adjustment device provided in this application;

[0029] Figure 8 A schematic diagram of the structure from one perspective of another embodiment of the rotary piston pump volume adjustment device provided in this application;

[0030] Figure 9 This is a schematic diagram of one embodiment of the plunger pump injection system provided in this application.

[0031] icon:

[0032] 100 - Frame; 110 - First plate; 120 - Second plate; 130 - Third plate; 140 - Operating through hole;

[0033] 200-Fixing sleeve; 210-Connecting sleeve body; 220-Rotating shaft fixing block; 230-Sliding groove; 240-Locking threaded hole; 250-Connecting structure;

[0034] 300 - Rotary shaft base; 310 - Base body; 320 - Bearing; 330 - Rotating shaft;

[0035] 400 - Drive assembly; 410 - Lead screw; 420 - First drive motor; 450 - Second drive motor; 460 - Rack; 470 - Gear;

[0036] 500 - Pump body; 550 - Pump head;

[0037] 610 - Control component; 620 - Actual volume acquisition component. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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 application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] When adjusting the volume of a rotary piston pump, it is usually done manually. However, when manually adjusting multiple rotary piston pumps, the volume error between different pumps is large, it relies heavily on the operator's experience, and is inefficient. The rotary piston pump volume adjustment device provided in this application can automatically adjust the volume of the rotary piston pump, with high efficiency and good consistency. The rotary piston pump volume adjustment device provided in this application can be applied to piston pumps, enabling the piston pump to automatically adjust to the required volume, with a high degree of automation and high volume adjustment accuracy. The piston pump provided in this application can also be applied to a piston pump injection system, where the actual volume acquisition component 620 can further automatically calibrate the volume adjustment accuracy.

[0042] In a first aspect, embodiments of this application provide a rotary piston pump volume adjustment device, including a frame 100, a fixed sleeve 200, a rotating shaft base 300, and a drive assembly 400.

[0043] The frame 100 is fixedly mounted on the ground or other fixed platform, such as a desktop. The frame 100 is equipped with a mounting position for the rotary piston pump body 500. Figure 2 As shown, the pump body 500 of the rotary piston pump is fixedly mounted on the frame 100 at the rotary piston pump body 500 mounting position. The fixing method is, for example, adhesive bonding, snap-fit, or bolt connection. After the position of the rotary piston pump body 500 is fixed, the swing angle of the pump head 550 relative to the pump body 500 can be adjusted, thereby adjusting the volume of the rotary piston pump.

[0044] In order to adjust the swing angle of the pump head 550 relative to the pump body 500, the volume adjustment device of this application is provided with a fixed sleeve 200, a rotating shaft base 300 and a drive assembly 400.

[0045] like Figure 3 or Figure 4 As shown, the fixed sleeve 200 is provided with a connecting structure 250 for cooperating with the rotary plunger pump head 550, such as... Figure 2 As shown, the pump head 550 is fixedly mounted on the connecting structure 250, and the fixing method is, for example, adhesive, snap-fit ​​or threaded connection.

[0046] For example, such as Figure 3 As shown, the connecting structure 250 on the fixing sleeve 200 is a rectangular groove. However, in other embodiments, such as... Figure 4 As shown, the connecting structure 250 on the fixing sleeve 200 is an elliptical groove. Of course, the connecting structure 250 on the fixing sleeve 200 can also be set to other shapes, such as a pentagonal prism groove.

[0047] like Figure 1 , Figure 2 and Figure 6 As shown, the fixed sleeve 200 is provided with a sliding fit groove 230. The rotating shaft base 300 is installed at the sliding fit groove 230 of the fixed sleeve 200, and the rotating shaft base 300 can rotate relative to the fixed sleeve 200 and slide along the sliding fit groove 230.

[0048] The pivot base 300 is used to realize the transmission connection between the drive assembly 400 and the fixed sleeve 200. For example... Figure 1 and Figure 2 As shown, the drive assembly 400 is used to drive the rotating shaft base 300 to reciprocate. The reciprocating movement of the rotating shaft base 300 causes the fixed sleeve 200 and the pump head 550 on the fixed sleeve 200 to swing back and forth relative to the frame 100 and the pump body 500, so as to change the tilt angle of the pump head 550 relative to the pump body 500, thereby adjusting the volume of the rotary piston pump.

[0049] For example, the drive component 400 is disposed on the rack 100, on the ground, or on other fixed surfaces, such as a desktop.

[0050] In this application, the drive assembly 400 drives the rotating shaft base 300 to reciprocate. The rotating shaft base 300 causes the fixed sleeve 200 and the pump head 550 on the fixed sleeve 200 to swing back and forth relative to the frame 100 and the pump body 500, thereby changing the tilt angle of the pump head 550 relative to the pump body 500. This precise mechanical transmission method can accurately control the swing angle of the pump head 550, thereby achieving precise adjustment of the volume of the rotary piston pump. The automated adjustment method avoids errors caused by individual differences and operator skill levels during manual adjustment, significantly reducing the volume error between different rotary piston pumps and improving product consistency and quality stability.

[0051] like Figure 7 As shown, in one embodiment, the pivot base 300 includes a base 310 and a pivot 330.

[0052] The seat 310 is connected to the drive assembly 400, enabling the drive assembly 400 to drive the seat 310 to reciprocate. The seat 310 is fixedly connected to the rotating shaft 330, for example, by welding, snap-fitting, or threaded connection. The reciprocating movement of the seat 310 drives the rotating shaft to reciprocate. The rotating shaft 330 is installed in the sliding fit groove 230. During the reciprocating movement of the rotating shaft 330, it pushes against the groove wall of the sliding fit groove 230, causing the fixed sleeve 200 and the pump head 550 to swing back and forth relative to the pump body 500 and the frame 100, thereby adjusting the volume of the rotary piston pump. This push-type drive method can achieve relatively precise mechanical action, allowing the swing angle of the pump head 550 to be precisely controlled according to the output of the drive assembly 400, which helps to improve the accuracy of the rotary piston pump volume adjustment.

[0053] For example, such as Figure 7 As shown, two rotating shafts 330 are symmetrically arranged on the base 310, and the two rotating shafts 330 are coaxial and parallel to the radial direction of the base 310. For example, two sliding fit grooves 230 are provided, with one rotating shaft 330 installed in one sliding fit groove 230 and the other rotating shaft 330 installed in the other sliding fit groove 230. This makes the force exerted by the base 310 on the fixed sleeve 200 through the rotating shafts 330 more balanced and stable, avoiding the shaking or jamming of the fixed sleeve 200 and pump head 550 during the swinging process caused by uneven force on one side, thus ensuring the smoothness and reliability of the adjustment process.

[0054] To reduce the friction between the rotating shaft 330 and the sliding groove 230, such as Figure 1 , Figure 2 and Figure 6 As shown, in one embodiment, a bearing 320 is sleeved on the rotating shaft 330, and the bearing 320 engages with the groove wall of the sliding groove 230.

[0055] The core function of bearing 320 is to convert the sliding friction between rotating shaft 330 and the sliding groove 230 wall into rolling friction. The coefficient of rolling friction is much lower than that of sliding friction, which allows rotating shaft 330 to move more easily within the sliding groove 230 with the support of bearing 320, significantly reducing resistance during movement. This low friction enables the movement of rotating shaft 330 to be transmitted more smoothly to fixed sleeve 200 and pump head 550, reducing motion lag caused by friction. This helps ensure that the power of drive assembly 400 is efficiently converted into the oscillating motion of pump head 550, improving the response speed and accuracy of rotary piston pump volume regulation.

[0056] For example, the outer diameter of the bearing 320 is equal to the width of the sliding groove 230, which can reduce the shaking of the bearing 320 in the sliding groove 230.

[0057] To facilitate the installation of the rotating shaft 330 and bearing 320 into the sliding fit groove 230, such as Figure 1 , Figure 2 and Figure 6 As shown, in one embodiment, the fixing sleeve 200 includes a connecting sleeve body 210 and a rotating shaft fixing block body 220.

[0058] like Figure 3 or Figure 4 As shown, the connecting structure 250 is disposed on the connecting sleeve 210.

[0059] like Figure 5 As shown, the rotating shaft fixing block 220 has a U-shaped structure.

[0060] like Figure 6 As shown, the rotating shaft fixing block 220 is fixedly installed on the connecting sleeve 210, and the fixing method is, for example, welding, snap-fitting, bolting, or gluing; Figure 5 As shown, a C-shaped groove is provided on the side wall of the rotating shaft fixing block 220 near the connecting sleeve 210; as Figure 6 As shown, the wall of the C-shaped groove and the side wall of the connecting sleeve 210 define a sliding fit groove 230.

[0061] The fixing sleeve 200 is divided into two parts: the connecting sleeve body 210 and the rotating shaft fixing block 220. During assembly, the rotating shaft 330 and the bearing 320 are first installed into the C-shaped groove of the rotating shaft fixing block 220, and then the rotating shaft fixing block is fixed to the outer wall of the connecting sleeve body 210 to form a shape as shown. Figure 6 The state shown.

[0062] like Figure 3 or Figure 4As shown, in one embodiment, the connecting sleeve 210 is provided with a locking threaded hole 240 and a bolt disposed in the locking threaded hole 240 to lock the pump head 550 and the connecting sleeve 210.

[0063] For example, the locking threaded hole 240 connects to the groove of the connecting structure 250. The bolt is threadedly engaged with the locking threaded hole 240. During the forward rotation of the bolt, the bolt can move axially and move closer to the pump head 550 located in the connecting structure 250. The bolt pushes the pump head 550 to increase the friction between the pump head 550 and the inner wall of the connecting structure 250, thereby locking the pump head 550 with the connecting sleeve 210. This effectively prevents the pump head 550 from loosening or displacing due to vibration, external force, or other factors during the operation of the rotary piston pump, ensuring that the pump head 550 and the connecting sleeve 210 always maintain a stable connection state, thus improving stability.

[0064] For example, the bolt is rotated in the opposite direction, allowing it to move axially away from the pump head 550, thereby unlocking the pump head 550 from the connecting sleeve 210.

[0065] like Figure 1 and Figure 2 As shown, in one embodiment, the frame 100 includes a first plate 110, a second plate 120, and a third plate 130. The second plate 120 connects the first plate 110 and the third plate 130 to form a U-shaped frame 100, and the connection method is, for example, welding, bolting, snap-fitting, or riveting.

[0066] The second plate 120 is provided with a pump body 500 mounting position, such as Figure 2 As shown, the pump body 500 is installed at the pump body 500 mounting position on the second plate 120.

[0067] The first board 110 has a mounting position for the driver component 400, such as Figure 1 and Figure 2 As shown, the drive assembly 400 is fixedly installed on the drive assembly 400 mounting position of the first plate 110, and the fixing method is, for example, welding, snap-fitting, gluing or bolting.

[0068] The third plate 130 is provided with an operation through hole 140, which facilitates the operation of the bolt at the locking threaded hole 240.

[0069] To enable the drive assembly 400 to drive the fixed sleeve 200 and the pump head 550 to reciprocate, such as Figure 1 and Figure 2 As shown, in one embodiment, the drive assembly 400 includes a threaded screw 410 and a first drive motor 420. The first drive motor 420 is fixedly mounted on the frame 100, and the fixing method is, for example, welding, snap-fitting, gluing or bolting.

[0070] One end of the threaded screw 410 is fixedly connected to the output shaft of the first drive motor 420, so that the rotation of the first drive motor 420 can drive the threaded screw 410 to rotate; the other end of the threaded screw 410 is threadedly engaged with the rotating shaft base 300.

[0071] For example, a nut is fixedly provided on the seat 310 of the rotating shaft base 300, and the seat 310 is threadedly engaged with the threaded rod body by the nut. The fixing method is, for example, welding, bolting, snap-fitting, or integral molding. However, in some other embodiments, the seat 310 is an annular seat structure, and the inner wall of the seat 310 is provided with an internal thread that engages with the threaded rod body.

[0072] During use, the first drive motor 420 rotates in both directions, driving the threaded screw 410 to rotate in both directions. The rotation of the threaded screw 410 in both directions drives the nut, the seat 310, the rotating shaft 330, and the bearing 320 to move back and forth in a straight line, thereby causing the bearing 320 to push the fixed sleeve 200 and the pump head 550 to swing.

[0073] For example, the first drive motor 420 includes, but is not limited to: a DC motor, an AC motor, a brushless DC motor, a stepper motor, a servo motor, or a switched reluctance motor.

[0074] Unlike the technical solution in the above embodiments where the drive assembly 400 includes a threaded screw 410 and a first drive motor 420, as shown in the example... Figure 8 As shown, in one embodiment, the drive assembly 400 includes a rack 460, a gear 470, and a second drive motor 450. The second drive motor 450 is mounted on the frame 100 and is fixed by means such as welding, snap-fitting, gluing, or bolting.

[0075] The gear 470 is fixedly connected to the output shaft of the second drive motor 450, and the fixing method is, for example, welding, snap-fitting or bolt connection.

[0076] The rack 460 is slidably mounted on the frame 100. For example, a groove is provided on the first plate 110, and the rack 460 is slidably mounted in the groove of the first plate 110 so that the rack 460 can reciprocate in a straight line.

[0077] Gear 470 meshes with rack 460, rack 460 is hinged to shaft base 300, second drive motor 450 rotates in both directions to drive gear 470 to rotate in both directions, gear 470 rotates in both directions to drive rack 460 and shaft base 300 to move back and forth, shaft base 300 drives fixed sleeve 200 and pump head 550 to swing.

[0078] Of course, the drive assembly 400 can also be configured with other structures, such as a worm gear drive mechanism, an equal lever arm drive mechanism, etc.

[0079] Secondly, embodiments of this application provide a plunger pump, including a pump body 500, a pump head 550, and a rotary plunger pump volume adjustment device as described in any of the above embodiments.

[0080] The pump head 550 is fixedly mounted on the fixed sleeve 200 of the rotary piston pump volume adjustment device, and the pump body 500 is fixedly mounted on the frame 100 of the rotary piston pump volume adjustment device.

[0081] The plunger pump can automatically adjust to the required volume through a set volume adjustment device, which has a high degree of automation and high accuracy in volume adjustment.

[0082] It should be understood that the main axis of the pump body 500 is parallel to the main axis of the rotary motor in the pump body 500. Adjusting the angle between the pump head 550 and the pump body 500 can adjust the angle between the pump head 550 and the main axis of the rotary motor.

[0083] Thirdly, embodiments of this application provide a plunger pump injection system, including a control component 610, an actual volume acquisition component 620, and a plunger pump as described in the above embodiments.

[0084] like Figure 9 As shown, the control component 610 is electrically connected to the drive component 400 and the actual volume acquisition component 620. Based on the actual volume of the piston pump obtained by the actual volume acquisition component 620, the control component 610 controls the drive component 400 to adjust the volume of the rotary piston pump to the target volume.

[0085] For example, during use, a target volume is first set for the control component 610. Then, the control component 610 controls the drive component 400 to adjust the volume of the plunger pump according to the target volume. The actual volume acquisition component 620 acquires the actual volume of the plunger pump and transmits the result to the control component 610. If the actual volume is greater than the target volume, the control component 610 controls the drive component 400 to reduce the volume of the plunger pump until the actual volume equals the target volume. If the actual volume is less than the target volume, the control component 610 controls the drive component 400 to increase the volume of the plunger pump until the actual volume equals the target volume. Of course, the plunger pump injection system provided in this application can also have other usage processes.

[0086] For example, the control component 610 includes, but is not limited to, a central processing unit (CPU), a programmable logic controller (PLC), or an electronic device with logic control functions.

[0087] For example, the actual volume acquisition component 620 includes, but is not limited to, a high-precision weighing sensor or a high-precision mass feedback sensor.

[0088] For example, the control component 610 is also electrically connected to a rotary motor in the pump body 500 to control the start and stop of the plunger pump.

[0089] In one embodiment, the plunger pump liquid injection system further includes a reagent filling device, wherein the plunger pump pumps liquid reagents into the reagent filling device, and the reagent filling device is used to fill the reagents.

[0090] In one embodiment, the plunger pump liquid injection system further includes a food filling device, wherein the plunger pump pumps liquid food into the food filling device, which is used to fill the food.

[0091] In one embodiment, the plunger pump injection system further includes an interaction component, which interacts with the control component 610 during use to set a target volume and control the start and stop of the plunger pump.

[0092] For example, interactive components include, but are not limited to, button input units, knob input units, touch screen adjustment units, and combinations thereof.

[0093] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0094] The above description is merely a preferred embodiment of this application and is not intended to limit 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 protection scope of this application.

Claims

1. A rotary piston pump volume adjustment device, characterized in that, include: A frame (100) is provided with a mounting position for a rotary piston pump body (500); A fixed sleeve (200) is provided with a connecting structure (250) for cooperating with the rotary plunger pump head (550), and a sliding fit groove (230) is provided on the fixed sleeve (200). A rotating base (300) is mounted on the sliding groove (230) of the fixed sleeve (200). The rotating base (300) is rotatable relative to the fixed sleeve (200) and slides along the sliding groove (230). A drive assembly (400) is used to drive the rotating shaft base (300) to reciprocate. The reciprocating movement of the rotating shaft base (300) causes the fixed sleeve (200) and the pump head (550) on the fixed sleeve (200) to swing back and forth relative to the frame (100) and the pump body (500) to change the tilt angle of the pump head (550) relative to the pump body (500), thereby adjusting the volume of the rotary piston pump.

2. The rotary piston pump volume adjustment device according to claim 1, characterized in that, The rotating shaft base (300) includes a seat (310) and a rotating shaft (330). The seat (310) is connected to the drive assembly (400) for transmission. The seat (310) is fixedly connected to the rotating shaft (330). The rotating shaft (330) is installed in the sliding groove (230).

3. The rotary piston pump volume adjustment device according to claim 2, characterized in that, A bearing (320) is fitted on the rotating shaft (330), and the bearing (320) engages with the groove wall of the sliding groove (230).

4. The rotary piston pump volume adjustment device according to claim 1, characterized in that, The fixing sleeve (200) includes a connecting sleeve body (210) and a rotating shaft fixing block (220). The connecting structure (250) is disposed on the connecting sleeve body (210). The rotating shaft fixing block (220) has a U-shaped structure and is fixedly installed on the connecting sleeve body (210). A C-shaped groove is provided on the side wall of the rotating shaft fixing block (220) near the connecting sleeve body (210). The groove wall of the C-shaped groove and the side wall of the connecting sleeve body (210) define the sliding fit groove (230).

5. The rotary piston pump volume adjustment device according to claim 4, characterized in that, The connecting sleeve (210) is provided with a locking threaded hole (240) and a bolt disposed in the locking threaded hole (240) to lock the pump head (550) and the connecting sleeve (210).

6. The rotary piston pump volume adjustment device according to claim 1, characterized in that, The frame (100) includes a first plate (110), a second plate (120) and a third plate (130). The second plate (120) connects the first plate (110) and the third plate (130) to form a U-shaped structure of the frame (100). The second plate (120) is provided with a pump body (500) mounting position. The first plate (110) is provided with a drive assembly (400) mounting position. The third plate (130) is provided with an operation through hole (140).

7. The rotary plunger pump volume adjustment device according to claim 1, characterized in that, The drive assembly (400) includes a threaded screw (410) and a first drive motor (420). The first drive motor (420) is mounted on the frame (100). One end of the threaded screw (410) is fixedly connected to the output shaft of the first drive motor (420), and the other end of the threaded screw (410) is threadedly engaged with the rotating shaft base (300).

8. The rotary piston pump volume adjustment device according to claim 1, characterized in that, The drive assembly (400) includes a rack (460), a gear (470), and a second drive motor (450). The second drive motor (450) is mounted on the frame (100). The gear (470) is fixedly connected to the output shaft of the second drive motor (450). The rack (460) is slidably mounted on the frame (100). The gear (470) meshes with the rack (460). The rack (460) is hinged to the rotating shaft base (300). The second drive motor (450) rotates in both directions, causing the gear (470) to rotate in both directions. The rotation of the gear (470) in both directions causes the rack (460) and the rotating shaft base (300) to reciprocate.

9. A plunger pump, characterized in that, It includes a pump body (500), a pump head (550), and a rotary piston pump volume adjustment device as described in any one of claims 1 to 8.

10. A plunger pump injection system, characterized in that, The system includes a control component (610), an actual volume acquisition component (620), and a plunger pump as described in claim 9. The control component (610) is electrically connected to the drive component (400) and the actual volume acquisition component (620). Based on the actual volume of the plunger pump obtained by the actual volume acquisition component (620), the control component (610) controls the drive component (400) to adjust the volume of the rotary plunger pump to a target volume.

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