Novel plunger pump valve box valve element

Abstract

The utility model discloses a novel plunger pump valve box valve element which comprises a valve body structure, an inner cavity is formed in the valve body structure, a water inlet is formed in the valve body structure and located on one side of the inner cavity, and a water inlet pipeline is fixedly connected to one end of the valve body structure and located on one side of the water inlet. The valve body structure, the inner cavity, the water inlet, the water outlet, the fixed outer ring, the second fixed rod, the filter screen, the movable valve element, the fixed disc and the second sealing ring are arranged, so that liquid and other things enter the inner cavity through the water inlet; when liquid flows into the valve body structure, the liquid is filtered through the filter screen between the fixed outer ring and the movable valve element, particles and the like in the liquid are filtered and intercepted, the sealing effect of the second sealing ring is prevented from being affected, the whole movable valve element can be moved, and the closer one end of the movable valve element is away from the water outlet, the lower the flow speed of the liquid in the valve body structure is, otherwise, the higher the flow speed is.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a novel plunger pump valve box valve core. Background Art

[0002] The plunger pump is an important working component in hydraulic and pneumatic transmission. It is a positive displacement pump and a reciprocating pump. The plunger pump relies on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to achieve oil suction and oil pressure. It is widely used in situations where high pressure, large flow and flow need to be adjusted.

[0003] The valve core is the valve part in the valve body that controls the pressure. The valve core is the valve part that the valve body uses its movement to achieve the basic functions of direction control, pressure control or flow control. However, the general valve core is easily affected by particles when sealing. Therefore, a new type of plunger pump valve box valve core is provided here to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a novel plunger pump valve box valve core to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a new type of plunger pump valve box valve core, comprising a valve body structure, wherein an inner cavity is provided inside the valve body structure, a water inlet is provided inside the valve body structure and on one side of the inner cavity, one end of the valve body structure is fixedly connected to the water inlet pipe and located on the water inlet side, a water outlet is provided inside the valve body structure and on one side, one end of the valve body structure is fixedly connected to the water outlet pipe and located on the water outlet side, the inner side of the inner cavity is slidably connected to a fixed outer ring, the inner side of the fixed outer ring is fixedly connected to a second fixed rod, one end of the second fixed rod is fixedly connected to the inner side of the fixed outer ring and is fixedly connected to a movable valve core, the inner side of the fixed outer ring and the outer side of the movable valve core is fixedly connected to a filter screen, one end of the movable valve core is fixedly connected to a fixed disc and located on the water outlet side, and one end of the movable valve core is fixedly connected to a second sealing ring and located on the outer side of the fixed disc.

[0006] As a preferred solution, a fixed circular tube is fixedly connected to the inner side of the inner cavity, one end of the movable valve core is fixedly connected to a first fixed rod, one end of the first fixed rod passes through the fixed circular tube and the valve body structure and is fixedly connected to a sliding ring on the outside of the water inlet pipe, the first fixed rod is slidably connected to the fixed circular tube, one end of the fixed circular tube is fixedly connected to the outside of the first fixed rod and is located on the outside of the first fixed rod, and the sliding ring is slidably connected to the water inlet pipe.

[0007] As a preferred solution, one end of the valve body structure is fixedly connected to a first sealing ring located outside the water inlet pipe, and one end of the valve body structure is fixedly connected to a third sealing ring located outside the water outlet pipe.

[0008] As a preferred solution, the water inlet pipe is connected to the water inlet, and the water outlet pipe is connected to the water outlet.

[0009] As a preferred solution, a servo motor is fixedly connected to the interior of the valve body structure, and the screw rod is fixedly connected to the output end of the servo motor.

[0010] As a preferred solution, the diameter of the fixed disc is the same as that of the water outlet.

[0011] As a preferred solution, the inner side of the inner cavity and the side of the water outlet have a gradually narrowing diameter.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention sets a valve body structure, an inner cavity, a water inlet, a water outlet, a fixed outer ring, a second fixed rod, a filter screen, a movable valve core, a fixed disc and a second sealing ring. After the liquid and other things enter the inner cavity through the water inlet, they will first be filtered by the filter screen between the fixed outer ring and the movable valve core, and the particles in the liquid will be filtered and intercepted to prevent affecting the sealing effect of the second sealing ring. The valve core as a whole can be moved, and the closer the distance between one end of the movable valve core and the water outlet is, the lower the liquid flow rate in the valve body structure is, and vice versa. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall internal structure of the utility model;

[0014] Figure 2 This is a cross-sectional view of the fixed outer ring of the utility model;

[0015] Figure 3 For this utility model Figure 1 Enlarged view of point A in the middle.

[0016] In the figure: 1. Valve body structure; 2. Moving valve core; 3. Fixed outer ring; 4. First fixed rod; 5. Servo motor; 6. Screw; 7. Sliding ring; 8. Water inlet pipe; 9. First sealing ring; 10. Water inlet; 11. Inner cavity; 12. Second sealing ring; 13. Fixed disc; 14. Third sealing ring; 15. Water outlet pipe; 16. Water outlet; 17. Filter screen; 18. Fourth sealing ring; 19. Fixed round tube; 20. Second fixed rod. DETAILED DESCRIPTION

[0017] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1 to 3 The utility model provides a technical solution: a new type of plunger pump valve box valve core, including a valve body structure 1, an inner cavity 11 is provided inside the valve body structure 1, a water inlet 10 is provided inside the valve body structure 1 and on one side of the inner cavity 11, and one end of the valve body structure 1 is fixedly connected to a water inlet pipe 8 on the side of the water inlet 10. Liquid and other things flow into the water inlet 10 in the valve body structure 1 through the water inlet pipe 8, and then flow into the inner cavity 11 through the water inlet 10. The interior of the valve body structure 1 and on the side of the water inlet 10 are fixedly connected to the water inlet pipe 8. A water outlet 16 is provided on one side, and one end of the valve body structure 1 is fixedly connected to a water outlet pipe 15 on one side of the water outlet 16. The liquid flowing into the water outlet 16 through the inner cavity 11 will finally flow into the water outlet pipe 15 through the water outlet 16. The inner side of the inner cavity 11 is slidably connected to a fixed outer ring 3, and the inner side of the fixed outer ring 3 is fixedly connected to a second fixed rod 20. One end of the second fixed rod 20 is fixedly connected to the inner side of the fixed outer ring 3 and is fixedly connected to the movable valve core 2. The inner side of the fixed outer ring 3 and the movable valve core 2 is fixedly connected to a filter screen 17 on the outside, one end of the movable valve core 2 is fixedly connected to a fixed disc 13 on the side of the water outlet 16, and one end of the movable valve core 2 is fixedly connected to the outside of the fixed disc 13 with a second sealing ring 12. By allowing the movable valve core 2 to move inside and utilizing the special structure inside the inner cavity 11, the flow rate in the inner cavity 11 will change as the movable valve core 2 moves to one side, and after the fixed disc 13 at one end of the movable valve core 2 enters the water outlet 16, the flow rate in the inner cavity 11 will change. Using the second sealing ring 12, the liquid in the inner cavity 11 cannot enter the water outlet 16, temporarily sealing it completely and stopping the circulation. The second fixing rod 20 is connected between the fixed outer ring 3 and the movable valve core 2, so that the fixed outer ring 3 moves with the movable valve core 2, and the filter screen 17 between the fixed outer ring 3 and the movable valve core 2 will filter the flowing liquid, etc., to prevent particulate matter in the liquid from affecting the second sealing ring 12 and affecting the sealing effect between the inner cavity 11 and the water outlet 16.

[0019] Furthermore, a fixed circular tube 19 is fixedly connected to the inner side of the inner cavity 11, and one end of the movable valve core 2 is fixedly connected to the first fixed rod 4. One end of the first fixed rod 4 passes through the fixed circular tube 19 and the valve body structure 1 and is fixedly connected to the sliding ring 7 on the outside of the water inlet pipe 8. The first fixed rod 4 is slidably connected to the fixed circular tube 19, and one end of the fixed circular tube 19 is fixedly connected to the fourth sealing ring 18 on the outside of the first fixed rod 4. The sliding ring 7 is slidably connected to the water inlet pipe 8. The screw rod 6 can be rotated on the inner side of the valve body structure 1, and the threaded connection relationship between the sliding ring 7 and the screw rod 6 can be utilized, so that the sliding ring 7 can slide on the outside of the water inlet pipe 8 as the screw rod 6 rotates, and at the same time drive the first fixed rod 4 to slide on the inside of the fixed circular tube 19, thereby driving the movable valve core 2 to move as a whole inside the inner cavity 11, and the gap between the first fixed rod 4 and the fixed circular tube 19 is sealed by the fourth sealing ring 18.

[0020] Furthermore, a first sealing ring 9 is fixedly connected to one end of the valve body structure 1 and is located outside the water inlet pipe 8, and a third sealing ring 14 is fixedly connected to one end of the valve body structure 1 and is located outside the water outlet pipe 15. The gap between the water inlet pipe 8 and the valve body structure 1 can be sealed by the first sealing ring 9 between the two, and the gap between the two can be sealed by the third sealing ring 14 between the water outlet pipe 15 and the valve body structure 1.

[0021] Furthermore, the water inlet pipe 8 is connected to the water inlet 10, and the water outlet pipe 15 is connected to the water outlet 16. The liquid in the water inlet pipe 8 and other things can enter the water inlet 10 in the valve body structure 1, and the liquid in the water outlet 16 and other things can flow out into the water outlet pipe 15.

[0022] Furthermore, a servo motor 5 is fixedly connected to the inside of the valve body structure 1, and a screw rod 6 is fixedly connected to the output end of the servo motor 5. By starting the servo motor 5, the screw rod 6 at the output end of the servo motor 5 can be rotated inside the valve body structure 1.

[0023] Furthermore, the diameter of the fixed disc 13 is the same as that of the water outlet 16 , so that the movable valve core 2 moves toward the water outlet 16 , and the fixed disc 13 at one end of the movable valve core 2 enters the water outlet 16 and blocks it.

[0024] Furthermore, the inner side of the inner cavity 11 and the side of the water outlet 16 have a gradually narrowing diameter, so that the movable valve core 2 can slowly move toward the water outlet 16, making the distance between the movable valve core 2 and the inner cavity 11 smaller and smaller, making the flow rate in the inner cavity 11 slower and slower, thereby controlling the flow rate, and vice versa.

[0025] When the present invention is used, liquid first enters the water inlet 10 in the valve body structure 1 through the water inlet pipe 8, and the first sealing ring 9 performs a sealing effect between the water inlet pipe 8 and the valve body structure 1. The liquid entering the water inlet 10 then enters the inner cavity 11, flows through the inner cavity 11 and the water outlet 16 into the water outlet pipe 15, and finally flows out through the water outlet pipe 15, and the third sealing ring 14 performs a sealing effect between the water outlet pipe 15 and the valve body structure 1.

[0026] The servo motor 5 can be started to rotate the screw rod 6 at the output end of the servo motor 5 inside the valve body structure 1. The threaded connection between the sliding ring 7 and the screw rod 6 can be used to make the sliding ring 7 slide on the outside of the water inlet pipe 8 as the screw rod 6 rotates. The movement of the sliding ring 7 will use the first fixed rod 4 to drive the mobile valve core 2 to move inside the inner cavity 11. By slowly moving the mobile valve core 2 toward the water outlet 16, the distance between the mobile valve core 2 and the inner cavity 11 becomes smaller and smaller, which will allow the liquid to enter the outlet through the inner cavity 11. The flow rate in the water outlet 16 becomes smaller and smaller, and the fixed disc 13 at one end of the valve body structure 1 is completely inserted into the water outlet 16. The second sealing ring 12 is used for sealing, so that the water outlet 16 and the inner cavity 11 can be temporarily completely sealed, and the water cannot flow temporarily. Moving the movable valve core 2 in the opposite direction will have the opposite effect. After the liquid enters the inner cavity 11, it will be filtered by the filter screen 17 between the fixed outer ring 3 and the movable valve core 2, and the particulate matter mixed in the liquid will be filtered and intercepted to prevent the particulate matter from affecting the sealing effect of the second sealing ring 12.

[0027] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0029] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel plunger pump valve box valve core, comprising a valve body structure (1) and a screw rod (6), characterized in that: The valve body structure (1) is provided with an inner cavity (11), a water inlet (10) is provided inside the valve body structure (1) and located on one side of the inner cavity (11), an inlet pipe (8) is fixedly connected to one end of the valve body structure (1) and located on one side of the water inlet (10), a water outlet (16) is provided inside the valve body structure (1) and located on one side, a water outlet pipe (15) is fixedly connected to one end of the valve body structure (1) and located on one side of the water outlet (16), a fixed outer ring (3) is slidably connected to the inner side of the inner cavity (11), and the inner side of the inner cavity (11) is provided with a fixed outer ring (3). A second fixed rod (20) is fixedly connected to the inner side of the fixed outer ring (3); a movable valve core (2) is fixedly connected to one end of the second fixed rod (20) and located on the inner side of the fixed outer ring (3); a filter screen (17) is fixedly connected to the inner side of the fixed outer ring (3) and located on the outer side of the movable valve core (2); a fixed disc (13) is fixedly connected to one end of the movable valve core (2) and located on one side of the water outlet (16); and a second sealing ring (12) is fixedly connected to one end of the movable valve core (2) and located on the outer side of the fixed disc (13).

2. A novel plunger pump valve box valve core according to claim 1, characterized in that: A fixed circular tube (19) is fixedly connected to the inner side of the inner cavity (11); one end of the movable valve core (2) is fixedly connected to a first fixed rod (4); one end of the first fixed rod (4) passes through the fixed circular tube (19) and the valve body structure (1) and is fixedly connected to a sliding ring (7) located outside the water inlet pipe (8); the first fixed rod (4) is slidably connected to the fixed circular tube (19); one end of the fixed circular tube (19) is fixedly connected to a fourth sealing ring (18) located outside the first fixed rod (4); and the sliding ring (7) is slidably connected to the water inlet pipe (8).

3. The novel plunger pump valve box valve core according to claim 1 is characterized in that: One end of the valve body structure (1) is located outside the water inlet pipe (8) and is fixedly connected to a first sealing ring (9), and one end of the valve body structure (1) is located outside the water outlet pipe (15) and is fixedly connected to a third sealing ring (14).

4. The novel plunger pump valve box valve core according to claim 1 is characterized in that: The water inlet pipe (8) is connected to the water inlet (10), and the water outlet pipe (15) is connected to the water outlet (16).

5. The novel plunger pump valve box valve core according to claim 2 is characterized in that: A servo motor (5) is fixedly connected to the interior of the valve body structure (1), and the screw rod (6) is fixedly connected to the output end of the servo motor (5).

6. The novel plunger pump valve box valve core according to claim 1 is characterized by: The diameter of the fixed disc (13) is the same as that of the water outlet (16).

7. The novel plunger pump valve box valve core according to claim 1 is characterized by: The inner side of the inner cavity (11) and the side located at the water outlet (16) have a gradually narrowing diameter.

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