Reciprocating pump fluid end and reciprocating pump

Abstract

The utility model discloses a reciprocating pump fluid end and a reciprocating pump, and belongs to the technical field of reciprocating pumps, the reciprocating pump fluid end comprises a base, the top of the base is fixedly provided with a pump body, the pump body is internally provided with a fluid cavity and a transmission cavity, and the fluid cavity and the transmission cavity are internally provided with a reciprocating pump fluid end and a reciprocating pump transmission end respectively; the reciprocating pump fluid end comprises a piston rod, a piston is fixedly installed at one end of the piston rod, and the other end of the piston is movably connected with the reciprocating pump transmission end through a crosshead. The piston rod is supported through cooperation of the fixing lantern ring and the balls, the reciprocating motion stability of the piston rod is guaranteed, rolling contact can be formed between the piston rod and the fixing lantern ring through the balls, and therefore friction and abrasion are remarkably reduced, the service life of the piston rod is prolonged, the maintenance and replacement frequency is reduced, and the service life of the piston rod is prolonged. And compared with sliding motion, rolling motion of the balls can reduce energy loss, transmission efficiency can be improved, and then the working efficiency of the pump is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reciprocating pump, and particularly to a reciprocating pump liquid force end and a reciprocating pump. BACKGROUND

[0002] The internal structure of the reciprocating pump mainly includes two parts of a transmission end and a liquid force end. The working principle of the reciprocating pump is to change the volume of the working chamber through the reciprocating movement of the piston, so as to transport liquid. When the piston moves from the left end to the right end of the pump cylinder, the volume in the pump cylinder on the left side of the piston increases, the pressure decreases, and the liquid enters the pump cylinder through the suction valve; when the piston moves to the right end, the pump cylinder is filled with liquid, and the liquid suction process ends.

[0003] The existing reciprocating pump is used, and the piston rod in the liquid force end of the reciprocating pump is easily abraded after long time activity, thereby reducing the working efficiency of the reciprocating pump. Therefore, the reciprocating pump liquid force end and the reciprocating pump are improved. CONTENT OF THE INVENTION

[0004] In view of the defects of the prior art, the present application provides a reciprocating pump liquid force end and a reciprocating pump, which overcomes the defects of the prior art and aims to solve the problem that the piston rod in the liquid force end of the existing reciprocating pump is easily abraded after long time activity, thereby reducing the working efficiency of the reciprocating pump.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A reciprocating pump liquid force end, comprising a base, a pump body is fixedly installed on the top of the base, a liquid force cavity and a transmission cavity are formed in the interior of the pump body, a reciprocating pump liquid force end and a reciprocating pump transmission end are respectively arranged in the interiors of the liquid force cavity and the transmission cavity, the reciprocating pump liquid force end comprises a piston rod, a piston is fixedly installed on one end of the piston rod, the other end of the piston is movably connected with the reciprocating pump transmission end through a cross head, a fixed collar is arranged in the interior of the liquid force cavity, four rotating cavities are formed in the interior of the fixed collar and are uniformly arranged along the circumferential direction of the fixed collar, and a ball is rotatably installed in the interior of each rotating cavity and is in abutment with the outer wall of the piston rod.

[0007] By adopting the above technical scheme, the piston rod is supported through the cooperation between the fixed collar and the ball, the stability of the reciprocating movement of the piston rod is ensured, the ball can form rolling contact between the piston rod and the fixed collar, thereby significantly reducing friction and abrasion, so that the service life of the piston rod is prolonged, the frequency of maintenance and replacement is reduced, and the rolling movement of the ball can reduce energy loss compared with sliding movement, which helps to improve the transmission efficiency and thus improve the working efficiency of the pump.

[0008] The center of the fixed collar is on the same horizontal line as the central axis of the piston rod, and the four rolling balls are uniformly distributed in a circumferential array about the central axis of the piston rod.

[0009] By adopting the above technical scheme, the four rolling balls are uniformly placed on a circumference around the piston rod, and the distance of each rolling ball from the central axis of the piston rod is equal, which helps to reduce friction and improve mechanical efficiency, and is used for supporting or guiding the reciprocating movement of the piston rod.

[0010] As a preferred technical solution of the present application, a mounting hole is formed in the outer surface of the fixed collar, a fixing bolt is screwed into the mounting hole, and the fixed collar is fixedly connected to the inner wall of the hydraulic chamber through the fixing bolt.

[0011] By adopting the above technical scheme, the fixed collar is installed through the cooperation between the mounting hole and the fixing bolt.

[0012] As a preferred technical solution of the present application, the outer wall of the piston abuts against the outer wall of the hydraulic chamber.

[0013] By adopting the above technical scheme, the stable movement of the piston in the hydraulic chamber is ensured, liquid leakage is prevented, and a sealing effect is achieved.

[0014] A reciprocating pump, which works with the hydraulic end of the reciprocating pump described above, the transmission end of the reciprocating pump includes a transmission shaft, the transmission shaft is rotatably connected to the pump body through a bearing, a worm is fixedly sleeved on the outer surface of the transmission shaft in the transmission cavity, a worm wheel is engaged and connected above the worm, the worm wheel is rotatably connected to the inner wall of the transmission cavity through a rotating rod, a crank is rotatably installed on one side of the outer surface of the worm wheel, and the other end of the crank is movably connected to the cross head.

[0015] By adopting the above technical scheme, the transmission shaft can drive the worm wheel to rotate when the transmission shaft rotates by using the meshing effect between the worm wheel and the worm, and the worm wheel can drive the cross head to reciprocate when the worm wheel rotates by using the transmission effect of the crank, so as to realize the transmission function of the transmission end of the reciprocating pump through the cooperation between the above components.

[0016] As a preferred technical solution of the present application, a fixed seat is fixedly installed on one side of the pump body at the top of the base, a motor is fixedly installed on the top of the fixed seat, and one end of the transmission shaft is fixedly connected to the output end of the motor.

[0017] By adopting the above technical scheme, the transmission shaft is driven to rotate by the motor, the fixed seat plays a role of limiting and fixing, and the stability of the motor during work is ensured.

[0018] The outer wall of the pump body is fixedly connected with an outlet pipe and an inlet pipe on the upper and lower sides of the liquid chamber respectively, and the outlet pipe and the inlet pipe are internally provided with a one-way ball valve.

[0019] By adopting the above technical scheme, the reciprocating pump can be ensured to normally operate by arranging the outlet pipe, the inlet pipe and the one-way ball valve.

[0020] As a preferred technical scheme of the present application, an oil inlet is arranged on the top of the pump body above the transmission chamber, and a sealing cover is threadedly connected to the outer wall of the oil inlet.

[0021] By adopting the above technical scheme, the reciprocating pump transmission end can be smoothly operated by arranging the oil inlet for adding lubricating oil.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1. In the present application, the piston rod is supported by the cooperation between the fixed collar and the ball, ensuring the stability of the reciprocating movement of the piston rod. The ball can form rolling contact between the piston rod and the fixed collar, thereby significantly reducing friction and wear, prolonging the service life of the piston rod, reducing the frequency of maintenance and replacement, and reducing energy loss compared with sliding movement, which helps to improve transmission efficiency and thus improve the working efficiency of the pump.

[0024] 2. In the present application, the transmission shaft is driven to rotate by the motor, the transmission shaft can drive the worm gear to rotate by the meshing effect between the worm gear and the worm, the worm gear can drive the cross head to reciprocate by the transmission effect of the crank, and the transmission function of the reciprocating pump transmission end is realized by the cooperation between the above components.

[0025] The specific embodiments of the present application are disclosed in detail in the following description and drawings, indicating the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0027] Figure 1 is a schematic view of the overall structure of the present application;

[0028] Figure 2 is a schematic view of the front cross-sectional structure of the present application;

[0029] Figure 3 It is a schematic view of the local structure of the present application;

[0030] Figure 4 It is a schematic view of the local structure of the present application; Figure 2 It is an enlarged schematic view of the structure at A of the present application;

[0031] Figure 5 It is a schematic view of the local structure of the present application; Figure 2 It is an enlarged schematic view of the structure at B of the present application.

[0032] In the figure: 1, base; 2, pump body; 3, motor; 4, fixed seat; 5, piston rod; 6, fixed collar; 7, ball; 8, piston; 9, mounting hole; 10, fixing bolt; 11, cross head; 12, crank; 13, worm gear; 14, worm; 15, bearing; 16, transmission shaft; 17, oil inlet; 18, liquid inlet pipe; 19, liquid outlet pipe; 20, one-way ball valve. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described in conjunction with the specific embodiments.

[0034] Referring to Figures 1-3 A reciprocating pump fluid end, comprising a base 1, the top of the base 1 is fixedly installed with a pump body 2, the inside of the pump body 2 is provided with a fluid chamber and a transmission chamber, the inside of the fluid chamber and the transmission chamber is respectively provided with a reciprocating pump fluid end and a reciprocating pump transmission end, the reciprocating pump fluid end comprises a piston rod 5, one end of the piston rod 5 is fixedly installed with a piston 8, the other end of the piston 8 is movably connected with the reciprocating pump transmission end through a cross head 11, the inside of the fluid chamber is provided with a fixed collar 6, the inside of the fixed collar 6 is provided with four rotating cavities which are uniformly distributed along the circumferential direction thereof, the inside of the rotating cavities is rotatably installed with balls 7, and the outer wall of the balls 7 is in close contact with the outer wall of the piston rod 5, in use, the piston rod 5 is supported through the cooperation between the fixed collar 6 and the balls 7, the stability of the reciprocating movement of the piston rod 5 is ensured, the balls 7 can form rolling contact between the piston rod 5 and the fixed collar 6, so that the friction and wear are significantly reduced, the service life of the piston rod 5 is prolonged, the frequency of maintenance and replacement is reduced, and the rolling movement of the balls 7 can reduce energy loss compared with sliding movement, which helps to improve the transmission efficiency and further improve the working efficiency of the pump.

[0035] In the present embodiment, as Figure 2 and 3As shown, the center of the fixed collar 6 is in the same horizontal line with the central axis of the piston rod 5, and the four balls 7 are evenly distributed in a circumferential array about the central axis of the piston rod 5. In use, the four balls 7 are evenly placed on a circumference around the piston rod 5, and the distance of each ball 7 from the central axis of the piston rod 5 is equal. This layout helps to reduce friction and improve mechanical efficiency, and is used to support or guide the reciprocating motion of the piston rod 5.

[0036] In this embodiment, as shown in Figure 2 and 3 , the outer surface of the fixed collar 6 is provided with a mounting hole 9, and the mounting hole 9 is internally threaded and inserted with a fixing bolt 10. The fixed collar 6 is fixedly connected to the inner wall of the hydraulic chamber through the fixing bolt 10. In use, the fixed collar 6 is installed through the cooperation between the mounting hole 9 and the fixing bolt 10.

[0037] In this embodiment, as shown in Figure 2 , the outer wall of the piston 8 abuts against the outer wall of the hydraulic chamber. In use, it ensures the stable movement of the piston 8 in the hydraulic chamber, prevents liquid leakage, and achieves sealing effect.

[0038] Referring to Figures 1-5 , a reciprocating pump works with the above-mentioned reciprocating pump hydraulic end. The transmission end of the reciprocating pump includes a transmission shaft 16, which is rotatably connected to the pump body 2 through a bearing 15. A worm 14 is fixedly sleeved on the outer surface of the transmission shaft 16 inside the transmission chamber. A worm wheel 13 is meshingly connected above the worm 14. The worm wheel 13 is rotatably connected to the inner wall of the transmission chamber through a rotating rod. A crank 12 is rotatably installed on one side of the outer surface of the worm wheel 13. The other end of the crank 12 is movably connected to a cross head 11. In use, the meshing effect between the worm wheel 13 and the worm 14 enables the transmission shaft 16 to drive the worm wheel 13 to rotate when the transmission shaft 16 rotates. The transmission effect of the crank 12 enables the worm wheel 13 to drive the cross head 11 to reciprocate when the worm wheel 13 rotates. The transmission function of the transmission end of the reciprocating pump is realized through the cooperation between the above-mentioned components.

[0039] In this embodiment, as shown in Figure 1 and 2 , a fixed seat 4 is fixedly installed on one side of the pump body 2 at the top of the base 1. A motor 3 is fixedly installed on the top of the fixed seat 4. One end of the transmission shaft 16 is fixedly connected to the output end of the motor 3. In use, the motor 3 drives the transmission shaft 16 to rotate, and the fixed seat 4 plays a role in limiting and fixing, ensuring the stability of the motor 3 when it works.

[0040] In this embodiment, as shown in Figure 2 and 5As shown, the outer wall of the pump body 2 is fixedly connected with the liquid outlet pipe 19 and the liquid inlet pipe 18 on the upper and lower sides of the liquid chamber respectively, and the inside of the liquid outlet pipe 19 and the liquid inlet pipe 18 is provided with a one-way ball valve 20, so that the reciprocating pump can run normally.

[0041] In the embodiment, as shown in the drawings, Figure 2 and 4 As shown, the top of the pump body 2 is provided with an oil inlet 17 above the transmission chamber, and the outer wall of the oil inlet 17 is threadedly connected with a sealing cover, so that the reciprocating pump transmission end can run smoothly by adding lubricating oil through the oil inlet 17.

[0042] The working principle of the utility model is: the motor 3 drives the transmission shaft 16 to rotate, the meshing effect between the worm wheel 13 and the worm 14 makes the transmission shaft 16 drive the worm wheel 13 to rotate, the transmission effect of the crank 12 makes the worm wheel 13 drive the cross head 11 to reciprocate, the cross head 11 drives the piston rod 5 to reciprocate, the piston rod 5 is supported by the cooperation between the fixed collar 6 and the ball 7 in the process, the stability of the reciprocating movement of the piston rod 5 is ensured, the ball 7 can form rolling contact between the piston rod 5 and the fixed collar 6, so that the friction and wear are significantly reduced, the service life of the piston rod 5 is prolonged, the frequency of maintenance and replacement is reduced, the rolling movement of the ball 7 can reduce energy loss compared with sliding movement, which helps to improve the transmission efficiency and the working efficiency of the pump.

[0043] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "the other end" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as limiting or implying that the indicated device or element must have a specific orientation, structure and operation, therefore, it cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "installation", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0045] The utility model is described above in combination with specific embodiments, but those skilled in the art should know that these descriptions are exemplary, and are not the limitation of the protection scope of the utility model. Those skilled in the art can make various modifications and changes to the utility model according to the spirit and principle of the utility model, and these modifications and changes are also within the scope of the utility model.

Claims

1. A reciprocating pump fluid end comprising a base (1), characterized in that, The top of the base (1) is fixedly provided with a pump body (2), the inside of the pump body (2) is provided with a liquid chamber and a transmission chamber, the inside of the liquid chamber and the transmission chamber is respectively provided with a reciprocating pump liquid end and a reciprocating pump transmission end, the reciprocating pump liquid end comprises a piston rod (5), one end of the piston rod (5) is fixedly provided with a piston (8), the other end of the piston (8) is movably connected with the reciprocating pump transmission end through a cross head (11), the inside of the liquid chamber is provided with a fixed collar (6), the inside of the fixed collar (6) is provided with four rotating cavities which are uniformly distributed along the circumferential direction of the fixed collar (6), the inside of the rotating cavities is rotatably provided with a ball (7), and the outer wall of the ball (7) is attached to the outer wall of the piston rod (5).

2. A liquid end for a reciprocating pump as set forth in claim 1, characterized in that, The center of the fixed collar (6) and the central axis of the piston rod (5) are on the same horizontal line, and the four balls (7) are uniformly distributed in a circumferential array about the central axis of the piston rod (5).

3. A liquid end for a reciprocating pump as set forth in claim 1, wherein, The outer surface of the fixed collar (6) is provided with a mounting hole (9), the inside of the mounting hole (9) is screwedly connected with a fixing bolt (10), and the fixed collar (6) is fixedly connected with the inner wall of the liquid chamber through the fixing bolt (10).

4. A liquid end for a reciprocating pump as set forth in claim 1 wherein, The outer wall of the piston (8) abuts against the outer wall of the liquid chamber.

5. A reciprocating pump, which works in cooperation with the fluid end of the reciprocating pump according to any one of claims 1-4, characterized in that, The reciprocating pump transmission end comprises a transmission shaft (16), the transmission shaft (16) is rotatably connected with the pump body (2) through a bearing (15), the outer surface of the transmission shaft (16) is fixedly sleeved with a worm (14) in the transmission chamber, the upper side of the worm (14) is meshedly connected with a worm wheel (13), the worm wheel (13) is rotatably connected with the inner wall of the transmission chamber through a rotating rod, one side of the outer surface of the worm wheel (13) is rotatably provided with a crank (12), the other end of the crank (12) is movably connected with the cross head (11).

6. A reciprocating pump according to claim 5, wherein The top of the base (1) is fixedly provided with a fixed seat (4) on one side of the pump body (2), the top of the fixed seat (4) is fixedly provided with a motor (3), one end of the transmission shaft (16) is fixedly connected with the output end of the motor (3).

7. A reciprocating pump according to claim 5, wherein The outer wall of the pump body (2) is fixedly connected with an outlet pipe (19) and an inlet pipe (18) on the upper and lower sides of the liquid chamber, respectively, the inside of the outlet pipe (19) and the inlet pipe (18) is provided with a one-way ball valve (20).

8. A reciprocating pump according to claim 5, wherein The top of the pump body (2) is provided with an oil inlet (17) above the transmission chamber, the outer wall of the oil inlet (17) is screwedly connected with a sealing cover.

Images