Flow self-adaptive variable adjusting pump

Abstract

The invention discloses a flow self-adaptive variable adjusting pump, which relates to the technical field of adjusting pumps, and comprises a shell, a cylinder body is rotatably arranged in the shell, and a plurality of groups of plunger cavities are formed in the cylinder body in a circumferential array; a plurality of groups of plunger bodies in one-to-one correspondence with the plunger cavities are hinged to one end, facing the cylinder body, of the swash plate, and the plunger bodies are inserted into the plunger cavities in a sliding manner; a base is further fixedly arranged at the bottom of the shell, a water inlet groove and a water outlet groove are symmetrically formed in the base, and a water inlet communicated with the water inlet groove and a water outlet communicated with the water outlet groove are formed in the base. The device further comprises a rotating module and an adjusting module, the rotating module is used for driving the swash plate to rotate, and the adjusting module is used for adjusting the inclination angle of the swash plate; under the condition that the swash plate is kept constant, the effect of flow adjustment can still be achieved, when the swash plate is matched with a rotating speed adjustment mode, flow adjustment in a larger range can be achieved, and the adjustment precision and stability are higher.

Description

Technical Field

[0001] The invention relates to the technical field of regulating pumps, and in particular to a flow adaptive variable regulating pump. Background Art

[0002] The flow adaptive variable control pump is a hydraulic pump that can automatically adjust its output flow according to the system flow demand. It realizes real-time adaptive flow adjustment through a built-in intelligent control system or mechanical adjustment mechanism.

[0003] In the prior art, for example, the patent document with the publication number CN106438259B discloses a double swash plate plunger pump, which also discloses a pump housing, left and right end covers, a cylinder body and a transmission shaft. The left and right end covers are symmetrically provided with left and right swash plates, respectively, and the left and right swash plates are correspondingly provided with left and right return plates, respectively. Two groups of plunger pairs are symmetrically provided at the left and right ends of the cylinder body and are evenly distributed on the cylinder body. The top of the plunger and the left and right sliding shoes on the return plate are both hinged.

[0004] In actual application, since the angle of the swash plate in the prior art is constant, when the flow of the plunger pump needs to be adjusted, it can only be achieved by adjusting the speed of the transmission shaft. The adjustment method is relatively simple and the flow change range is small, which is difficult to meet actual application needs. Summary of the invention

[0005] The purpose of the present invention is to provide a flow adaptive variable control pump to solve the following technical problems:

[0006] In the prior art, the angle of the swash plate cannot be adaptively adjusted based on flow demand.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A flow adaptive variable regulating pump comprises a housing, a cylinder body is rotatably arranged in the housing, and a plurality of groups of plunger cavities are arranged in a circumferential array on the cylinder body;

[0009] It also includes a swash plate arranged in the housing, wherein one end of the swash plate facing the cylinder body is hingedly provided with a plurality of groups of plunger bodies corresponding to the plunger cavities one by one, and the plunger bodies are slidably inserted in the plunger cavities;

[0010] A base is also fixedly arranged at the bottom of the shell, and a water inlet groove and a drainage groove are symmetrically opened on the base, and a water inlet connected to the water inlet groove and a drainage outlet connected to the drainage groove are respectively opened on the base;

[0011] It also includes a rotating module and an adjusting module. The rotating module is used to drive the swash plate to rotate, and the adjusting module is used to adjust the inclination angle of the swash plate.

[0012] Preferably, the rotating module includes a driving shaft fixedly arranged on the cylinder body, and the driving shaft extends to the outside of the shell and is fixed to the output end of the servo motor.

[0013] Preferably, a circular groove is reserved at the central end of the swash plate, the drive shaft is inserted into the circular groove, and limiting seats are symmetrically fixedly arranged on both sides of the circular groove;

[0014] Among them, several groups of strip-shaped clamping seats are fixedly arranged in a circumferential array on the driving shaft, and a positioning cylinder is also sleeved on the driving shaft. The inner wall of the positioning cylinder is provided with several groups of strip-shaped clamping grooves that slide and engage with the strip-shaped clamping seats in a one-to-one correspondence. Two groups of pins are symmetrically fixedly arranged on the outer wall of the positioning cylinder, and the other end of the pin is rotatably connected to the limit seat.

[0015] Preferably, the rotating module includes an end cover arranged in the shell, the end cover is provided with a reserved groove for inserting the driving shaft, an annular groove is provided inside the end cover, and a sliding seat fixed to the limit seat is slidably embedded in the annular groove.

[0016] Preferably, an adjustment seat is fixedly arranged on one side of the end cover, an adjustment cylinder is fixedly arranged on one side wall of the shell, and a driving end of the adjustment cylinder is hinged to the adjustment seat.

[0017] Preferably, an annular groove is provided on the outer side of the cavity wall of each group of plunger cavities close to the base, an adjusting cylinder is slidably embedded in the annular groove, and a through hole is provided at the bottom of the adjusting cylinder;

[0018] Wherein, the adjusting cylinder is connected to a lifting mechanism which drives the adjusting cylinder to rise and fall.

[0019] Preferably, the lifting mechanism includes a first L-shaped bracket fixedly arranged on one side of the plunger body, a first rack fixedly arranged on the bottom of the first L-shaped bracket close to the side of the cylinder body, a plurality of groups of limit plates corresponding to the first L-shaped bracket fixedly arranged on the outer wall of the cylinder body, a second L-shaped bracket is slidably arranged on the limit plate toward one side of the first L-shaped bracket, the bottom of the second L-shaped bracket is fixed to the adjusting cylinder, a second rack is fixedly arranged on the second L-shaped bracket, a gear is rotatably arranged between the first L-shaped bracket and the second L-shaped bracket, and the gear is synchronously meshed with the first L-shaped bracket and the second L-shaped bracket.

[0020] Preferably, a sealing cover for sealing the water inlet groove and the water outlet groove is rotatably arranged on the base, and the sealing cover is fixed to the cylinder body through a plurality of positioning rods;

[0021] Among them, the sealing cover is provided with a plurality of groups of water delivery ports corresponding to the plunger cavities in a circumferential array, and the water delivery ports are connected with the through holes through telescopic tubes.

[0022] Beneficial effects of the present invention:

[0023] (1) The present invention adjusts the inclination angle of the swash plate by adjusting the module to adjust the distance difference between the highest and lowest positions of the plunger body in the plunger cavity, thereby changing the amount of water entering and draining each time the plunger cavity moves, thereby achieving the effect of flow regulation. Compared with the prior art, the present invention can still achieve the effect of flow regulation while keeping the swash plate constant. When combined with the speed regulation method, a wider range of flow regulation can be achieved, and the regulation accuracy and stability are higher;

[0024] (2) In the present invention, when the plunger body is in an ascending state in the plunger cavity, the regulating cylinder is driven downward by the lifting mechanism to further increase the volume of the plunger cavity, so that the amount of water sucked into the plunger cavity is greater. When the plunger body is in a descending state in the plunger cavity, the regulating cylinder is driven upward by the lifting mechanism to press the water in the plunger cavity out. The arrangement of the regulating cylinder of the present invention can further increase the water delivery of the pump;

[0025] (3) In the present invention, when the plunger body rises in the plunger cavity, it can synchronously drive the first L-shaped bracket to rise. During the rising process of the first L-shaped bracket, it drives the second L-shaped bracket to descend by engaging with the gear. The second L-shaped bracket can drive the adjusting cylinder to descend. Accordingly, when the plunger body descends in the plunger cavity, it can synchronously drive the adjusting cylinder to rise. Therefore, the plunger body and the adjusting cylinder of the present invention can achieve the effect of synchronous movement, with higher stability, and do not need to use other servo drive equipment for driving, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a structural schematic diagram of a flow adaptive variable regulating pump of the present invention;

[0028] Figure 2 It is a structural schematic diagram of a cylinder in a flow adaptive variable regulating pump of the present invention;

[0029] Figure 3 This is a schematic diagram of the cross-section of a cylinder in a flow adaptive variable regulating pump of the present invention. Figure 1 ;

[0030] Figure 4 This is a schematic diagram of the cross-section of a cylinder in a flow adaptive variable regulating pump of the present invention. Figure 2 ;

[0031] Figure 5 It is a structural schematic diagram of a plunger body in a flow adaptive variable regulating pump of the present invention;

[0032] Figure 6It is a structural schematic diagram of a positioning cylinder in a flow adaptive variable regulating pump of the present invention.

[0033] In the figure: 1, housing; 2, drive shaft; 3, cylinder body; 4, plunger body; 5, positioning cylinder; 6, ring groove; 101, adjusting cylinder; 102, base; 103, drain outlet; 104, water inlet; 105, water inlet groove; 106, drain groove; 201, end cover; 202, reserved groove; 203, adjustment seat; 204, inclined plate; 301, positioning rod; 302, sealing cover; 401, the first An L-shaped bracket; 402, a plunger cavity; 403, a first rack; 404, a gear; 405, a limit plate; 406, a second L-shaped bracket; 407, an adjustment cylinder; 408, a second rack; 501, a strip groove; 502, a strip seat; 503, a limit seat; 504, a pin shaft; 505, an annular groove; 506, a slide seat; 601, a telescopic tube; 602, a water inlet; 603, a through hole. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] See also Figure 1 and Figure 2 As shown, the present invention is a flow adaptive variable control pump, including a housing 1, a cylinder body 3 is rotatably arranged in the housing 1, and a plurality of groups of plunger cavities 402 are provided on the cylinder body 3 in a circumferential array; specifically, this embodiment does not limit the number of plunger cavities 402 and their volumes, so as to meet the actual flow delivery requirements.

[0037] See also Figure 3-Figure 4 , further comprising a swash plate 204 arranged in the housing 1, wherein the swash plate 204 is hingedly arranged with a plurality of groups of plunger bodies 4 corresponding to the plunger cavities 402 at one end thereof facing the cylinder body 3, and the plunger bodies 4 are slidably inserted in the plunger cavities 402;

[0038] A base 102 is also fixedly arranged at the bottom of the housing 1, and a water inlet groove 105 and a drainage groove 106 are symmetrically provided on the base 102, and a water inlet 104 connected to the water inlet groove 105 and a drainage groove 103 connected to the drainage groove 106 are respectively provided on the base 102; specifically, the base 102 of this embodiment is a circular structure, and the water inlet groove 105 and the drainage groove 106 are both arranged as arc structures;

[0039] It also includes a rotating module and an adjusting module. The rotating module is used to drive the swash plate 204 to rotate, and the adjusting module is used to adjust the inclination angle of the swash plate 204. It can be explained that when the plunger pump is used, the external water first enters the water inlet tank 105 through the water inlet 104, and then the swash plate 204 is adjusted to rotate a certain angle through the adjusting module, and then the swash plate 204 is driven to rotate in the circumferential direction through the rotating module. The swash plate 204 synchronously drives each plunger body 4 to rotate, and the plunger body 4 can rise and fall in the plunger cavity 402 during the movement (see Figure 5 ), accordingly, when the plunger cavity 402 moves to the corresponding position of the water inlet groove 105, the plunger body 4 moves upward in the plunger cavity 402, thereby generating negative pressure in the plunger cavity 402 to pump the water in the water inlet groove 105 into the plunger cavity 402. When the plunger body 4 rises to the limit position, as the swash plate 204 rotates, the plunger cavity 402 moves to the position of the drainage groove 106. At this time, the plunger body 4 descends in the plunger cavity 402, thereby draining the water in the plunger cavity 402 into the drainage groove 106, and finally draining it through the drainage port 103. This reciprocating process can achieve the effect of water delivery;

[0040] Furthermore, when it is necessary to adjust the delivery flow of the plunger pump, the present embodiment can adjust the inclination angle of the swash plate 204 through the adjustment module to adjust the distance difference between the highest and lowest positions of the plunger body 4 in the plunger cavity 402, thereby changing the water intake and discharge volume of each movement in the plunger cavity 402 to achieve the flow regulation effect. Compared with the prior art, the present embodiment can still achieve the flow regulation effect while keeping the swash plate 204 constant. When combined with the speed regulation method, a wider range of flow regulation can be achieved, and the regulation accuracy and stability are higher.

[0041] Example 2

[0042] Based on Example 1, please refer to Figure 3-Figure 4 The rotating module includes a driving shaft 2 fixedly arranged on the cylinder body 3, the driving shaft 2 extends to the outside of the shell 1 and is fixed to the output end of the servo motor; specifically, in this embodiment, the driving shaft 2 is driven to rotate by the servo motor arranged on the outside of the shell 1, and the driving shaft 2 can synchronously drive the cylinder body 3 to rotate.

[0043] In order to ensure that the plunger bodies 4 and the cylinder bodies 3 rotate synchronously, in this embodiment, please refer to Figure 3-Figure 4 as well as Figure 6A circular groove is reserved at the center end of the swash plate 204, and the drive shaft 2 is inserted into the circular groove. The two sides of the circular groove are symmetrically fixed with limit seats 503, wherein a plurality of groups of strip-shaped card seats 502 are fixedly arranged in a circumferential array on the drive shaft 2, and a positioning cylinder 5 is also sleeved on the drive shaft 2. The inner wall of the positioning cylinder 5 is provided with a plurality of groups of strip card slots 501 corresponding to and slidingly engaged with the strip card seats 502 one by one, and the outer wall of the positioning cylinder 5 is symmetrically fixed with two groups of pins 504. The other end is rotatably connected to the limit seat 503; it can be explained that when the drive shaft 2 of this embodiment rotates, it drives the positioning cylinder 5 to rotate through the strip clamping seat 502 and the strip clamping groove 501, and the positioning cylinder 5 can drive the swash plate 204 to rotate through the pin shaft 504, and the swash plate 204 synchronously drives the section plunger body 4 to rotate; accordingly, by setting the pin shaft 504 and the limit seat 503 rotatably connected, the adjustment mechanism can drive the swash plate 204 to rotate around the pin shaft 504.

[0044] As a further solution of this embodiment, please refer to Figure 2 and Figure 4 The rotating module includes an end cover 201 arranged in the shell 1, and a reserved groove 202 for inserting the drive shaft 2 is opened on the end cover 201. An annular groove 505 is opened in the end cover 201, and a sliding seat 506 fixed to the limit seat 503 is slidably embedded in the annular groove 505, wherein an adjusting seat 203 is fixedly arranged on one side of the end cover 201, and an adjusting cylinder 101 is fixedly arranged on one side wall of the shell 1, and the driving end of the adjusting cylinder 101 is hinged to the adjusting seat 203; it can be explained that in this embodiment, the end cover 201 is driven to rotate by the adjusting cylinder 101, and the swash plate 204 can be synchronously driven to rotate during the movement of the end cover 201, and the setting of the reserved groove 202 can avoid interference between the end cover 201 and the drive shaft 2 when rotating.

[0045] See also Figure 2-Figure 5 , an annular groove 6 is provided on the outer side of the cavity wall of each group of plunger cavities 402 close to the base 102, and an adjusting cylinder 407 is slidably embedded in the annular groove 6, and a through hole 603 is provided at the bottom of the adjusting cylinder 407, wherein the adjusting cylinder 407 is connected to a lifting mechanism that drives it to rise and fall; it can be explained that when the plunger body 4 is in an ascending state in the plunger cavity 402, the adjusting cylinder 407 is driven down by the lifting mechanism, and the volume of the plunger cavity 402 is further increased, so that the amount of water sucked into the plunger cavity 402 is more, and when the plunger body 4 is in a descending state in the plunger cavity 402, the adjusting cylinder 407 is driven up by the lifting mechanism to press the water in the plunger cavity 402 out. The setting of the adjusting cylinder 407 in this embodiment can further increase the water delivery of the pump; specifically, the input or output of water in the plunger cavity 402 passes through the through hole 603.

[0046] In this embodiment, the lifting mechanism includes a first L-shaped bracket 401 fixedly arranged on one side of the plunger body 4, a first rack 403 is fixedly arranged on the side of the bottom of the first L-shaped bracket 401 close to the cylinder body 3, a plurality of groups of limit plates 405 corresponding to the first L-shaped bracket 401 are fixedly arranged on the outer wall of the cylinder body 3, the limit plate 405 is slidably arranged on the side of the first L-shaped bracket 401 to set the second L-shaped bracket 406, the bottom of the second L-shaped bracket 406 is fixed to the adjusting cylinder 407, the second rack 408 is fixedly arranged on the second L-shaped bracket 406, a gear 404 is rotatably arranged between the first L-shaped bracket 401 and the second L-shaped bracket 406, the gear 404 is rotatably arranged in two groups of limit frames, the limit frames are fixed to the limit plates 405, and the gears 404 are rotatably arranged in two groups of limit frames. The wheel 404 is synchronously engaged with the first L-shaped bracket 401 and the second L-shaped bracket 406; it can be explained that when the plunger body 4 rises in the plunger cavity 402, it can synchronously drive the first L-shaped bracket 401 to rise, and during the rising process of the first L-shaped bracket 401, it drives the second L-shaped bracket 406 to descend by engaging with the gear 404, and the second L-shaped bracket 406 can drive the adjustment cylinder 407 to descend. Accordingly, when the plunger body 4 descends in the plunger cavity 402, the adjustment cylinder 407 can be synchronously driven to rise. Therefore, the plunger body 4 and the adjustment cylinder 407 of this embodiment can achieve the effect of synchronous movement, with higher stability, and do not need to use other servo drive equipment for driving, thereby reducing production costs.

[0047] For further information, see Figure 4 , a sealing cover 302 for sealing the water inlet groove 105 and the drainage groove 106 is rotatably arranged on the base 102, and the sealing cover 302 is fixed to the cylinder body 3 through a plurality of positioning rods 301, wherein a plurality of water delivery ports 602 corresponding to the plunger cavity 402 are arranged in a circumferential array on the sealing cover 302, and the water delivery ports 602 are connected with the through hole 603 through the telescopic tube 601; specifically, when the cylinder body 3 rotates, the sealing cover 302 can be synchronously driven to rotate on the base 102, and the setting of the sealing cover 302 can prevent the water in the water inlet groove 105 and the drainage groove 106 from overflowing, so that the water can only flow between the water delivery port 602 and the telescopic tube 601; illustratively, the water in the water inlet groove 105 enters the plunger cavity 402 through the water delivery port 602, the telescopic tube 601 and the through hole 603, and the water in the plunger cavity 402 can enter the drainage groove 106 through the through hole 603, the telescopic tube 601 and the water delivery port 602.

[0048] A working method of a flow adaptive variable regulating pump comprises the following steps:

[0049] See also Figure 2-Figure 4 , S1, water enters the water inlet 105 through the water inlet 104;

[0050] S2, the adjusting module adjusts the swash plate 204 to rotate to a certain angle;

[0051] S3, the rotating module drives the swash plate 204 to rotate in the circumferential direction, and the swash plate 204 synchronously drives each plunger body 4 to rotate;

[0052] S4, when the plunger cavity 402 moves to the corresponding position of the water inlet groove 105, the plunger body 4 moves upward in the plunger cavity 402, generating negative pressure in the plunger cavity 402, and pumping the water in the water inlet groove 105 into the plunger cavity 402;

[0053] S5. After the plunger body 4 rises to the limit position, as the swash plate 204 rotates, the plunger cavity 402 moves to the position of the drain groove 106. At this time, the plunger body 4 descends in the plunger cavity 402, draining the water in the plunger cavity 402 into the drain groove 106 and finally discharged through the drain port 103.

[0054] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A flow adaptive variable control pump, comprising a housing (1), a cylinder body (3) rotatably arranged in the housing (1), and a plurality of groups of plunger cavities (402) are arranged in a circumferential array on the cylinder body (3); It is characterized in that It also includes a swash plate (204) arranged in the housing (1), wherein a plurality of groups of plunger bodies (4) corresponding one to one with the plunger cavities (402) are hingedly arranged at one end of the swash plate (204) facing the cylinder body (3), and the plunger bodies (4) are slidably inserted in the plunger cavities (402); The bottom of the housing (1) is also fixedly provided with a base (102), and a water inlet groove (105) and a water outlet groove (106) are symmetrically provided on the base (102), and a water inlet (104) connected to the water inlet groove (105) and a water outlet (103) connected to the water outlet groove (106) are respectively provided on the base (102); It also includes a rotating module and an adjusting module, wherein the rotating module is used to drive the swash plate (204) to rotate, and the adjusting module is used to adjust the inclination angle of the swash plate (204).

2. A flow adaptive variable control pump according to claim 1, characterized in that: The rotating module comprises a driving shaft (2) fixedly arranged on the cylinder body (3); the driving shaft (2) extends to the outside of the housing (1) and is fixed to the output end of the servo motor.

3. A flow adaptive variable control pump according to claim 2, characterized in that: A circular groove is reserved at the central end of the swash plate (204), the drive shaft (2) is inserted into the circular groove, and limiting seats (503) are symmetrically fixedly arranged on both sides of the circular groove; A plurality of groups of strip-shaped card seats (502) are fixedly arranged in a circumferential array on the driving shaft (2), a positioning cylinder (5) is also sleeved on the driving shaft (2), a plurality of groups of strip-shaped card slots (501) corresponding to and slidably engaging with the strip-shaped card seats (502) are opened on the inner wall of the positioning cylinder (5), two groups of pin shafts (504) are symmetrically fixedly arranged on the outer wall of the positioning cylinder (5), and the other end of the pin shaft (504) is rotatably connected to the limit seat (503).

4. A flow adaptive variable control pump according to claim 3, characterized in that: The rotating module comprises an end cover (201) arranged in the housing (1), a reserved groove (202) for inserting the drive shaft (2) is provided on the end cover (201), an annular groove (505) is provided in the end cover (201), and a sliding seat (506) fixed to the limiting seat (503) is slidably embedded in the annular groove (505).

5. A flow adaptive variable control pump according to claim 4, characterized in that: An adjusting seat (203) is fixedly arranged on one side of the end cover (201), and an adjusting cylinder (101) is fixedly arranged on one side wall of the housing (1), and a driving end of the adjusting cylinder (101) is hingedly connected to the adjusting seat (203).

6. A flow adaptive variable control pump according to claim 1, characterized in that: An annular groove (6) is provided on the outer side of the cavity wall of each group of plunger cavities (402) close to the base (102), an adjusting cylinder (407) is slidably embedded in the annular groove (6), and a through hole (603) is provided at the bottom of the adjusting cylinder (407); The adjusting cylinder (407) is connected to a lifting mechanism that drives the adjusting cylinder to rise and fall.

7. A flow adaptive variable control pump according to claim 6, characterized in that: The lifting mechanism comprises a first L-shaped bracket (401) fixedly arranged on one side of the plunger body (4); a first rack (403) is fixedly arranged on the bottom of the first L-shaped bracket (401) close to the side of the cylinder body (3); a plurality of groups of limit plates (405) corresponding to the first L-shaped bracket (401) are fixedly arranged on the outer wall of the cylinder body (3); a second L-shaped bracket (406) is slidably arranged on the limit plates (405) toward one side of the first L-shaped bracket (401); the bottom of the second L-shaped bracket (406) is fixed to the adjustment cylinder (407); a second rack (408) is fixedly arranged on the second L-shaped bracket (406); a gear (404) is rotatably arranged between the first L-shaped bracket (401) and the second L-shaped bracket (406); and the gear (404) is synchronously meshed with the first L-shaped bracket (401) and the second L-shaped bracket (406).

8. The flow adaptive variable control pump according to claim 6, characterized in that: A sealing cover (302) for sealing the water inlet groove (105) and the water discharge groove (106) is rotatably arranged on the base (102), and the sealing cover (302) is fixed to the cylinder body (3) via a plurality of positioning rods (301); The sealing cover (302) is provided with a plurality of water delivery ports (602) in a circumferential array and corresponding to the plunger cavities (402) one by one. The water delivery ports (602) are connected to the through holes (603) via telescopic tubes (601).

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