Plunger pump

Abstract

The utility model discloses a plunger pump, which belongs to the technical field of plunger pumps and comprises a pump body, a plunger block, a driving rod and a first disc are arranged in the pump body, the two sides of the first disc are connected with a front cover and a rear cover through a plurality of screws, a first connecting block is fixed on the side face of the plunger block, a second connecting block is fixed at one end of the driving rod, and a circular ring is fixed at the other end of the driving rod. A third connecting block is fixed to the circle center of the top end of the first disc, and the third connecting block is connected with a connecting rod through a second rotating shaft; a first bearing and a driving motor are fixed to the bottom end of the top plate, a rotating rod is connected to the first bearing, a first gear is fixed to the side face of the rotating rod, a second disc is fixed to the other end of the rotating rod, and a fourth connecting block is fixed to the edge of the bottom end of the second disc; the driving motor output end is connected with the second gear; by using the plunger pump, the plunger block can be freely adjusted, so that the flow can be adjusted as required.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pumps, in particular to a plunger pump. Background Art

[0002] The plunger pump uses the reciprocating motion of the piston in the working chamber of the cylinder (or the periodic elastic deformation of flexible elements such as diaphragms and bellows in the working chamber) to make the volume of the working chamber change periodically. At present, most of the hydraulic plunger pumps on the market use the cooperation of a rotating crankshaft and connecting rod to make the piston block reciprocate in the pump body.

[0003] The Chinese patent with the existing announcement number CN213331428U discloses a high-pressure hydraulic plunger pump, which includes a pump body, a sleeve and a motor. A filter screen is installed on the other side of the pump body by bolts, an inlet is welded on one side of the sleeve, and an outlet is welded on one side of the pump body. A piston is clamped on the inner side of the pump body, and a clamping plate is provided on one side of the piston. The clamping plate is connected with the piston through a connecting rod. A crankshaft is installed on the inner side of the pump body, a guide rod is installed on the crankshaft, and a shrapnel is welded on the inner wall of the sleeve. The high-pressure hydraulic plunger pump can prevent impurities from entering the inner side of the pump body, prevent impurities from increasing the friction of the piston due to attachment to the inner wall of the pump body, and can automatically remove impurities from the filtering mechanism, thereby ensuring the filtering effect of the filtering mechanism and the circulation of the liquid, and can prevent the piston from being subjected to oblique thrust or pulling force when reciprocating, reduce the extrusion of the piston on the inner wall of the pump body, and ensure the service life of the piston and the pump body. The pump is suitable for pumping high-pressure liquid.

[0004] In view of the above-mentioned related technology, the inventor believes that the following problems exist: the movement amplitude of the piston block of the above-mentioned plunger pump is fixed, which makes the hydraulic plunger pump unable to adjust the flow rate according to usage requirements, resulting in certain limitations in the use of the hydraulic plunger pump. Therefore, it is urgent to design a new type of plunger pump to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a plunger pump to solve the problem that the movement range of the piston block of the existing plunger pump is fixed, resulting in the hydraulic plunger pump being unable to adjust the flow rate according to the use requirements, thereby causing the hydraulic plunger pump to have certain limitations in use.

[0006] In order to solve the above technical problems, the utility model provides a plunger pump, including a pump body, wherein a plunger block, a driving rod and a first disc are arranged in the pump body, and a front cover and a rear cover are connected to the two sides of the pump body by a plurality of screws, a first connecting block is fixed to the side of the plunger block, a second connecting block is fixed to one end of the driving rod, and a ring is fixed to the other end, and the second connecting block is movably connected to the first connecting block by a first rotating shaft; a third connecting block is fixed to the center of the top of the first disc, and the third connecting block is movably connected to a connecting rod by a second rotating shaft;

[0007] A top plate is provided on the pump body, a first bearing and a driving motor are fixed at the bottom end of the top plate, a rotating rod is connected to the first bearing, a first gear is fixed to the side of the rotating rod and the other end of the rotating rod passes through the pump body and is fixed to a second disc, a fourth connecting block is fixed to the bottom edge of the second disc, the other end of the connecting rod passes through the ring and is movably connected to the fourth connecting block via a third rotating shaft; the output end of the driving motor is connected to a second gear meshing with the first gear for transmission.

[0008] Optionally, two bases are fixed on the pump body, and hydraulic cylinders are fixed on the two bases, and their piston rods are connected to the top plate.

[0009] Optionally, a bearing plate is fixed to the pump body via two straight rods, a second bearing is fixed to the bearing plate, a movable rod is fixed to the center of the bottom end of the first disc, and the other end of the movable rod passes through the pump body and is connected to the second bearing.

[0010] Optionally, a liquid inlet pipe is connected to the side of the front cover, and a liquid outlet pipe is connected to the side of one end of the pump body.

[0011] Optionally, a first valve and a second valve are respectively installed at the other ends of the liquid inlet pipe and the liquid outlet pipe.

[0012] Optionally, a rubber pad is also fixed on the inner side of the ring.

[0013] In a plunger pump provided by the utility model, it includes a pump body, a plunger block, a driving rod and a first disc are provided in the pump body, and a front cover and a rear cover are connected on both sides of the pump body by a plurality of screws, a first connecting block is fixed to the side of the plunger block, a second connecting block is fixed to one end of the driving rod, and a ring is fixed to the other end, the second connecting block is movably connected to the first connecting block by a first rotating shaft, a third connecting block is fixed to the top center of the first disc, and the third connecting block is movably connected to a connecting rod by a second rotating shaft; a top plate is provided on the pump body, a first bearing and a driving motor are fixed to the bottom end of the top plate, a rotating rod is connected to the first bearing, and the rotating A first gear is fixed to the side of the rod and the other end of the rod passes through the pump body and is fixed with a second disc, a fourth connecting block is fixed to the bottom edge of the second disc, the other end of the connecting rod passes through the ring and is movably connected to the fourth connecting block through a third rotating shaft, and the output end of the driving motor is connected to a second gear meshing with the first gear; when using the plunger pump, the second gear is driven by the output end of the driving motor to mesh with the first gear so that the rotating rod drives the second disc and one end of the connecting rod to rotate, and at this time the connecting rod drives the ring to rotate so that the driving rod drives the piston block to move back and forth, so that the plunger block can be freely adjusted to adjust the flow rate according to usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the plunger pump provided by the utility model;

[0015] Figure 2 This is a top view of the plunger pump provided by the utility model;

[0016] Figure 3 yes Figure 2 Middle AA section view.

[0017] In the figure: 1, pump body; 2, front cover; 3, rear cover; 4, screw; 5, plunger block; 6, first connecting block; 7, first rotating shaft; 8, driving rod; 9, second connecting block; 10, ring; 11, first disc; 12, third connecting block; 13, second rotating shaft; 14, connecting rod; 15, base; 16, hydraulic cylinder; 17, top plate; 18, first bearing; 19, driving motor; 20, rotating rod; 21, first gear; 22, second disc; 23, second gear; 24, fourth connecting block; 25, third rotating shaft; 26, movable rod; 27, straight rod; 28, bearing plate; 29, second bearing; 30, liquid inlet pipe; 31, liquid outlet pipe; 32, first valve; 33, second valve; 34, rubber pad. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] The utility model provides a plunger pump, the structure of which is as follows: Figures 1 to 3As shown, it includes a pump body 1, in which a plunger block 5, a driving rod 8 and a first disc 11 are provided, and the front cover 2 and the rear cover 3 are connected on both sides thereof by a plurality of screws 4, so as to facilitate the disassembly and assembly of the front cover 2 and the rear cover 3, a first connecting block 6 is fixed on the side of the plunger block 5, a second connecting block 9 is fixed on one end of the driving rod 8, and a ring 10 is fixed on the other end, the second connecting block 9 is movably connected to the first connecting block 6 through a first rotating shaft 7, the first disc 11 is located inside the pump body 1, a third connecting block 12 is fixed on the top center thereof, the third connecting block 12 is movably connected to a connecting rod 14 through a second rotating shaft 13, and the piston block is adapted to the inside of the pump body 1; a top plate 17 is provided on the pump body 1, and a first bearing 18 and a driving motor are fixed on the bottom end of the top plate 17 19, a rotating rod 20 is connected to the first bearing 18, a first gear 21 is fixed on the side of the rotating rod 20 and the other end thereof passes through the pump body 1 and is fixed with a second disc 22, the second disc 22 is located inside the pump body 1, and a fourth connecting block 24 is fixed to the bottom edge thereof, the other end of the connecting rod 14 passes through the ring 10 and is movably connected to the fourth connecting block 24 through the third rotating shaft 25, the output end of the driving motor 19 is connected to a second gear 23 meshing with the first gear 21, and the output end of the driving motor 19 drives the second gear 23 to mesh with the first gear 21 so that the rotating rod 20 drives the second disc 22 and one end of the connecting rod 14 to rotate, and at this time the connecting rod 14 drives the ring 10 to rotate so that the driving rod 8 drives the piston block 5 to move back and forth. Using the plunger pump, the plunger block can be freely adjusted so as to adjust the flow rate according to the use requirements.

[0022] Furthermore, two bases 15 are fixed on the pump body 1, and hydraulic cylinders 16 are fixed on the two bases 15, whose piston rods are connected to the top plate 17. The top plate 17 is driven up and down by the piston rods of the two hydraulic cylinders 16, so that the rotating rod 20 drives the second disc 22 to move up and down, thereby fixing the connecting rod 14 and the ring 10 to avoid shaking during operation.

[0023] Furthermore, a bearing plate 28 is fixed to the pump body 1 through two straight rods 27, a second bearing 29 is fixed to the bearing plate 28, a movable rod 26 is fixed to the center of the bottom end of the first disc 11, and the other end of the movable rod 26 passes through the pump body 1 and is connected to the second bearing 29, so as to make the movable rod 26 rotate.

[0024] Furthermore, a liquid inlet pipe 30 is connected to the side of the front cover 2, and a liquid outlet pipe 31 is connected to the side of one end of the pump body 1 for liquid output.

[0025] Furthermore, a first valve 32 and a second valve 33 are respectively installed at the other ends of the liquid inlet pipe 30 and the liquid outlet pipe 31 to transport the liquid into the pump body 1 .

[0026] Furthermore, a rubber pad 34 is fixed to the inner side of the ring 10 to protect the connecting rod 14 from wear when being fixed.

[0027] The working principle of the utility model is as follows: first, the two hydraulic cylinders 16 are started, and their piston rods drive the top plate 17 to move up and down, so that the rotating rod 20 drives the second disc 22 to move up and down, thereby fixing the connecting rod 14 and the ring 10, and then the driving motor 19 is started, and its output end drives the second gear 23 to mesh with the first gear 21 so that the rotating rod 20 drives the second disc 22 and one end of the connecting rod 14 to rotate, and at this time the connecting rod 14 drives the ring 10 to rotate so that the driving rod 8 drives the piston block 5 to move back and forth.

[0028] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A plunger pump, comprising a pump body (1), characterized in that: The pump body (1) is provided with a plunger block (5), a driving rod (8) and a first disc (11), and both sides of the plunger block (5) are connected to a front cover (2) and a rear cover (3) by means of a plurality of screws (4); a first connecting block (6) is fixed to the side of the plunger block (5); a second connecting block (9) is fixed to one end of the driving rod (8), and a circular ring (10) is fixed to the other end; the second connecting block (9) is movably connected to the first connecting block (6) by means of a first rotating shaft (7); a third connecting block (12) is fixed to the center of the top end of the first disc (11), and the third connecting block (12) is movably connected to a connecting rod (14) by means of a second rotating shaft (13); The pump body (1) is provided with a top plate (17), the bottom end of which is fixed with a first bearing (18) and a driving motor (19), the first bearing (18) is connected with a rotating rod (20), the side of the rotating rod (20) is fixed with a first gear (21), and the other end of the rotating rod (20) passes through the pump body (1) and is fixed with a second disc (22), the bottom edge of the second disc (22) is fixed with a fourth connecting block (24), the other end of the connecting rod (14) passes through the ring (10) and is movably connected with the fourth connecting block (24) via a third rotating shaft (25); the output end of the driving motor (19) is connected with a second gear (23) meshing with the first gear (21) for transmission.

2. The plunger pump according to claim 1, characterized in that Two bases (15) are also fixed on the pump body (1), and hydraulic cylinders (16) are fixed on the two bases (15), and the piston rods of the hydraulic cylinders are connected to the top plate (17).

3. The plunger pump according to claim 1, characterized in that A bearing plate (28) is fixed to the pump body (1) via two straight rods (27), a second bearing (29) is fixed to the bearing plate (28), a movable rod (26) is fixed to the center of the bottom end of the first disc (11), and the other end of the movable rod (26) passes through the pump body (1) and is connected to the second bearing (29).

4. The plunger pump according to claim 1, characterized in that The side surface of the front cover (2) is connected to a liquid inlet pipe (30), and the side surface of one end of the pump body (1) is connected to a liquid outlet pipe (31).

5. The plunger pump according to claim 4, characterized in that A first valve (32) and a second valve (33) are respectively installed at the other ends of the liquid inlet pipe (30) and the liquid outlet pipe (31).

6. The plunger pump according to claim 1, characterized in that A rubber pad (34) is also fixed on the inner side of the circular ring (10).

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