Novel reciprocating pump

Abstract

The utility model relates to the technical field of reciprocating pumps, and provides a novel reciprocating pump which comprises a pump body, a piston, a piston rod and a connecting frame. The piston is arranged in the pump body and attached to the inner wall of the pump body. One end of each piston rod is connected with one side face of the piston, the other end of each piston rod penetrates through the pump body, and the piston rods and the pump body are sealed in a sliding mode; the connecting frame is connected with the ends, penetrating through the pump body, of the two piston rods, and the connecting frame is connected with a driving piece. The two piston rods are arranged to be connected with the piston, the two piston rods are connected through the connecting frame, and the two piston rods both penetrate through the pump body, so that when the driving piece drives the piston, the piston rods and the connecting frame to move, uniform stress can be conducted through the two piston rods, and therefore radial force is shared; therefore, abrasion of the piston and the piston rod can be effectively reduced, and stability of an application structure is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of reciprocating pump technology, and in particular to a novel reciprocating pump. Background Technology

[0002] Reciprocating pumps are a very common type of media transfer pump, widely used in the petrochemical industry. Current reciprocating pumps primarily utilize a motor to drive a flywheel, which in turn drives a connecting rod and the pump's piston rod via an eccentric shaft. The reciprocating motion of the piston rod, combined with the alternating opening and closing of the pump's inlet and outlet valves, enables the transfer of the media.

[0003] The existing utility model patent with authorization announcement number CN210769191U discloses a reciprocating vacuum pump, including an electric motor and a cylinder. The electric motor and the cylinder are connected by a dust cover. An adjustable height support frame is installed below the electric motor. A reinforcing hoop is installed in the middle of the cylinder. A one-way suction valve and a one-way exhaust valve arranged vertically are installed at the other end of the cylinder. An mounting plate is installed below the cylinder. The mounting plate is fixed to a load-bearing block by an internal expansion bolt. A piston is installed inside the cylinder. The piston is connected to the flywheel inside the electric motor through a crank-connecting rod mechanism.

[0004] In the above technical solution, the flywheel is driven to rotate by the motor, and then the crank connecting rod is moved by the flywheel, thereby driving the piston to move. However, this transmission structure will apply a large radial force to the piston and piston rod. Especially in high-load reciprocating pumps, the moving parts will wear heavily, affecting the structural stability. Utility Model Content

[0005] In view of this, the present invention proposes a novel reciprocating pump that can effectively reduce the radial force on the piston and piston rod, thereby reducing component wear, in order to solve the problem of severe component wear in existing reciprocating pumps.

[0006] The technical solution of this utility model is achieved as follows: This utility model provides a novel reciprocating pump, comprising a pump body, a piston, a piston rod, and a connecting frame, wherein,

[0007] The pump body is equipped with an inlet valve pipe and an outlet valve pipe, both of which are connected to the interior of the pump body.

[0008] The piston is located inside the pump body and fits against the inner wall of the pump body;

[0009] There is one piston rod on each side of the piston. One end of the piston rod is connected to one side of the piston, and the other end passes through the pump body. The piston rod and the pump body slide and seal.

[0010] The connecting frame is connected to one end of the two piston rods that pass through the pump body, and the connecting frame is also connected to a drive component.

[0011] Based on the above technical solutions, preferably, two inlet valve pipes and two outlet valve pipes are each provided on the pump body.

[0012] Based on the above technical solutions, preferably, the connecting frame has a rectangular frame structure, one end of the piston rod passes through the pump body, and flanges are provided at the positions of the connecting frame and the piston rod, and the connecting frame and the piston rod are detachably connected through the flanges.

[0013] Based on the above technical solutions, preferably, a reinforcing plate is also included. The reinforcing plate has an angular structure and is set at the corner of the connecting frame and welded and fixed.

[0014] Based on the above technical solutions, preferably, it also includes a sliding bracket, which is set on the outer wall of the pump body, and the side plate of the connecting frame passes through the sliding bracket.

[0015] Based on the above technical solutions, preferably, the sliding bracket includes a base and a sliding cover, wherein,

[0016] The base is set on the outer wall of the pump body, and the base and the pump body are set as an integral structure;

[0017] The sliding cover is connected to the base, and the side plate passes between the sliding cover and the base.

[0018] Based on the above technical solutions, preferably, it also includes an oil injection box, which is set on the outer wall of the pump body, and the side plate passes through the inside of the oil injection box.

[0019] Based on the above technical solutions, preferably, the connecting frame further includes a connecting plate, and the side plate includes a first plate and a second plate, wherein...

[0020] There are two first plates and two second plates, each connected by a connecting plate.

[0021] The second plate passes through the sliding bracket and the oil filling box, and is detachably connected to the first plate.

[0022] One of the connecting plates is connected to the drive unit.

[0023] Based on the above technical solutions, preferably, the side plate also includes a U-shaped plate, which is connected to the first plate and snapped into the second plate, and is fixed by fasteners.

[0024] Based on the above technical solutions, preferably, a connecting shaft is also included, which is located at one end of the connecting frame and is used to connect the driving component.

[0025] The novel reciprocating pump of this utility model has the following advantages over the prior art:

[0026] (1) By setting two piston rods to connect the piston, and connecting the two piston rods through the connecting frame, both piston rods pass through the pump body. This allows the driving component to distribute the force through the connecting frame when moving the piston, piston rod and connecting frame, so that the two piston rods are evenly stressed, thereby sharing the radial force. This can effectively reduce the wear of the piston and piston rod, thereby ensuring the stability of the application structure.

[0027] (2) By setting a sliding bracket on the pump body and passing the side plate of the connecting bracket through the sliding bracket, the radial force can be borne by the sliding bracket when the piston rod and the connecting bracket are under force, thereby reducing the wear of the piston and piston rod and ensuring the stability of the piston rod and piston movement.

[0028] (3) By setting an oil injection box on the pump body and having the side plate of the connecting bracket pass through the oil injection box, a lubrication effect can be achieved to avoid wear problems on the side plate and sliding bracket. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a perspective view of the novel reciprocating pump of this utility model;

[0031] Figure 2 This is a front view of the novel reciprocating pump of this utility model;

[0032] Figure 3 For the present utility model Figure 2 Sectional view along the AA direction;

[0033] Figure 4 This is a top view of the novel reciprocating pump of this utility model;

[0034] Figure 5 For the present utility model Figure 4 Cross-sectional view along the BB direction;

[0035] In the diagram: 1. Pump body; 11. Inlet valve pipe; 12. Outlet valve pipe; 2. Piston; 3. Piston rod; 4. Connecting frame; 41. Side plate; 411. First plate; 412. Second plate; 413. U-shaped plate; 42. Connecting plate; 5. Reinforcing plate; 6. Sliding bracket; 61. Base; 62. Sliding cover; 7. Oil filling box; 8. Connecting shaft. Detailed Implementation

[0036] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0037] like Figures 1-5 As shown, the novel reciprocating pump of this utility model includes a pump body 1, a piston 2, a piston rod 3, a connecting frame 4, a reinforcing plate 5, a sliding bracket 6, an oil filling box 7, and a connecting shaft 8.

[0038] like Figures 1-3 As shown, the pump body 1 is provided with an inlet valve pipe 11 and an outlet valve pipe 12, both of which are connected to the interior of the pump body 1; the piston 2 is located inside the pump body 1 and fits against the inner wall of the pump body 1; there is a piston rod 3 on each side of the piston 2, one end of the piston rod 3 is connected to one side of the piston 2, and the other end passes through the pump body 1, and the piston rod 3 slides and seals with the pump body 1.

[0039] As described above, the pump body 1 is used for media transportation. Both the inlet valve pipe 11 and the outlet valve pipe 12 are equipped with valve discs. When the piston 2 moves, the valve disc of the inlet valve pipe 11 opens, while the valve disc of the outlet valve pipe 12 closes, and the media enters the pump body 1 through the inlet valve pipe 11.

[0040] When piston 2 moves in the reverse direction, the valve disc of inlet valve pipe 11 closes, while the valve disc of outlet valve pipe 12 opens, thereby realizing the transportation of the medium.

[0041] The piston rod 3 and the pump body 1 are in a sliding seal to prevent media leakage.

[0042] like Figure 1 As shown, the connecting frame 4 is connected to one end of the two piston rods 3 that pass through the pump body 1, and the connecting frame 4 is connected to a driving component;

[0043] As described above, in order to reduce the radial force borne by the piston rod 3 and the piston 2, the two piston rods 3 are connected by a connecting bracket 4. Thus, the connecting bracket 4 can be connected to the driving component. When driving, the two piston rods 3 are set as an integral structure through the connecting bracket 4, so they can bear the radial force simultaneously, thereby reducing wear during movement and improving the reliability of the structure application.

[0044] Specifically, the drive unit adopts a conventional drive structure, consisting of components such as a motor, flywheel, and connecting rod. The motor drives the flywheel, which is equipped with an eccentric shaft. The eccentric shaft is connected to the connecting frame 4 via a connecting rod.

[0045] like Figure 1 and Figure 5 As shown, there are two inlet valve pipes 11 and two outlet valve pipes 12 on the pump body 1.

[0046] As described above, by setting two inlet valve pipes 11 and two outlet valve pipes 12 on the pump body 1, they can move alternately. Two chambers are formed on both sides of the piston 2. Each chamber is connected to an inlet valve pipe 11 and an outlet valve pipe 12. In this way, when the piston 2 moves, at least one inlet valve pipe 11 will receive water and one outlet valve pipe 12 will discharge water, thereby improving the efficiency of medium transportation.

[0047] like Figure 1 The connecting frame 4 has a rectangular frame structure. The piston rod 3 passes through one end of the pump body 1, and flanges are provided at the positions of the connecting frame 4 and the piston rod 3 respectively. The connecting frame 4 and the piston rod 3 are detachably connected through the flanges.

[0048] As described above, by setting the connecting frame 4 as a rectangular frame structure, it is convenient to connect the two piston rods 3 without interfering with the pump body 1, thus connecting the two piston rods 3 into an integrated structure.

[0049] The connecting frame 4 and the piston rod 3 are connected by a flange, which facilitates the assembly and disassembly of the connecting frame 4.

[0050] like Figure 1 As shown, the reinforcing plate 5 has an angular structure and is installed at the corner of the connecting frame 4 and welded in place;

[0051] As described above, by setting reinforcing plates 5 at the corners of the connecting frame 4, the structural strength of the connecting frame 4 can be improved, thereby avoiding stress concentration and deformation problems at the corners of the connecting frame 4.

[0052] like Figures 1-4 As shown, the sliding bracket 6 is installed on the outer wall of the pump body 1, and the side plate 41 of the connecting frame 4 passes through the sliding bracket 6.

[0053] As described above, by setting a sliding bracket 6 on the outer wall of the pump body 1, the side plate 41 of the connecting frame 4 can be supported by the sliding bracket 6, thereby ensuring the stability of the movement of the connecting frame 4.

[0054] At the same time, this structure can also share the radial force borne by the piston rod 3, thereby reducing the wear of the components.

[0055] like Figure 4 As shown, the sliding bracket 6 includes a base 61 and a sliding cover 62. The base 61 is disposed on the outer wall of the pump body 1 and the base 61 and the pump body 1 are integrally formed. The sliding cover 62 is connected to the base 61, and the side plate 41 passes through the space between the sliding cover 62 and the base 61.

[0056] As described above, the sliding bracket 6 consists of two parts: a base 61 and a sliding cover 62. The base 61 and the pump body 1 are integrated into one structure, which is beneficial for positioning the sliding cover 62.

[0057] After the sliding cover 62 is connected and fixed to the base 61, and the side plate 41 of the connecting bracket 4 is passed through, the relative position of the connecting bracket 4 and the pump body 1 can be stabilized, thereby better connecting the piston rod 3 to ensure the accuracy of the action; at the same time, after disassembling the sliding cover 62, it is convenient to remove the connecting bracket 4.

[0058] like Figure 3 and Figure 4 As shown, the oil filling box 7 is installed on the outer wall of the pump body 1, and the side plate 41 passes through the interior of the oil filling box 7;

[0059] As described above, by installing an oil injection box 7 on the pump body 1 and passing the side plate 41 through it, lubricating oil can be injected through the oil injection box 7 to lubricate the side plate 41, thereby reducing the sliding wear between the side plate 41 and the sliding bracket 6, thus ensuring the service life and stable operation.

[0060] Specifically, the oil filling box 7 is designed as a hollow shell structure, with the side plate 41 passing through the interior of the oil filling box 7, and an oil filling pipe is provided on the oil filling box 7 for injecting lubricating oil.

[0061] like Figure 4 As shown, the connecting frame 4 also includes a connecting plate 42, and the side plate 41 includes a first plate 411 and a second plate 412. There are two first plates 411 and two second plates 412 arranged opposite to each other, and each of the two first plates 411 and two second plates 412 is connected by a connecting plate 42. The second plate 412 passes through the sliding bracket 6 and the oil filling box 7, and is detachably connected to the first plate 411. One of the connecting plates 42 is connected to the driving component.

[0062] As described above, the side plate 41 is divided into two parts: one part consists of two first plates 411 connected by a connecting plate 42, and the other part consists of two second plates 412 connected by a connecting plate 42.

[0063] The first plate 411 and the second plate 412 are detachably connected. When in use, the first plate 411 and the second plate 412 can be separated, which makes it easy for the second plate 412 to be pulled out through the oil box 7, thus ensuring the ease of disassembly and assembly of the connecting bracket 4.

[0064] In some embodiments, the oil filling box 7 can be configured as a detachable structure, just like the sliding bracket 6, thereby ensuring the ease of assembly and disassembly of the connecting bracket 4.

[0065] like Figure 4 As shown, the side plate 41 also includes a U-shaped plate 413, which is connected to the first plate 411 and snapped into the second plate 412 and fixed by fasteners.

[0066] As described above, by setting a U-shaped plate 413 on the first plate 411, the second plate 412 can be easily connected through the U-shaped plate 413, and then it can be connected and fixed by bolts or other fasteners.

[0067] When disassembly is required, remove the fasteners to remove the first plate 411, while the second plate 412 can be pulled out from the sliding bracket 6 and the oil filling box 7.

[0068] like Figure 1 As shown, the connecting shaft 8 is located at one end of the connecting frame 4 and is used to connect the driving component;

[0069] As described above, the connecting shaft 8 is used to connect with the connecting rod of the driving component. The end of the connecting shaft 8 is rotatably connected to the connecting rod through a rotating shaft, so that the connecting rod can swing, thereby driving the piston 2.

[0070] Specific implementation steps:

[0071] In application, the connecting rod is connected to the connecting shaft 8, and the other end of the connecting rod is connected to the flywheel driven by the motor, so as to drive the piston rod 3 and piston 2 to move through the connecting rod;

[0072] During media transport, the radial force exerted by the connecting rod on the piston rod 3 is borne by the two piston rods 3, the connecting frame 4, and the sliding bracket 6, thereby reducing the force on the piston rod 3 and piston 2, thus reducing wear and ensuring stability and service life.

[0073] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel reciprocating pump, characterized in that: It includes a pump body (1), a piston (2), a piston rod (3), and a connecting frame (4), wherein, The pump body (1) is provided with an inlet valve pipe (11) and an outlet valve pipe (12), and both the inlet valve pipe (11) and the outlet valve pipe (12) are connected to the interior of the pump body (1); The piston (2) is disposed inside the pump body (1), and the piston (2) is in contact with the inner wall of the pump body (1); One piston rod (3) is provided on each side of the piston (2). One end of the piston rod (3) is connected to one side of the piston (2), and the other end passes through the pump body (1). The piston rod (3) and the pump body (1) are slidably sealed. The connecting frame (4) is connected to one end of the two piston rods (3) that pass through the pump body (1), and the connecting frame (4) is connected to a driving component.

2. The novel reciprocating pump as described in claim 1, characterized in that: Two inlet valve pipes (11) and two outlet valve pipes (12) are each provided on the pump body (1).

3. The novel reciprocating pump as described in claim 1, characterized in that: The connecting frame (4) has a rectangular frame structure. The piston rod (3) passes through one end of the pump body (1). Flanges are provided on the connecting frame (4) at the position corresponding to the piston rod (3). The connecting frame (4) and the piston rod (3) are detachably connected through the flanges.

4. The novel reciprocating pump as described in claim 3, characterized in that: It also includes a reinforcing plate (5), which has an angular structure and is disposed at the corner of the connecting frame (4) and welded and fixed.

5. The novel reciprocating pump as described in any one of claims 1 to 4, characterized in that: It also includes a sliding bracket (6), which is disposed on the outer wall of the pump body (1), and the side plate (41) of the connecting frame (4) passes through the sliding bracket (6).

6. The novel reciprocating pump as described in claim 5, characterized in that: The sliding bracket (6) includes a base (61) and a sliding cover (62), wherein, The base (61) is disposed on the outer wall of the pump body (1), and the base (61) and the pump body (1) are configured as an integral structure; The sliding cover (62) is connected to the base (61), and the side plate (41) passes between the sliding cover (62) and the base (61).

7. The novel reciprocating pump as described in claim 5, characterized in that: It also includes an oil filling box (7), which is disposed on the outer wall of the pump body (1), and the side plate (41) passes through the interior of the oil filling box (7).

8. The novel reciprocating pump as described in claim 7, characterized in that: The connecting frame (4) further includes a connecting plate (42), and the side plate (41) includes a first plate (411) and a second plate (412), wherein, There are two of each of the first plate (411) and the second plate (412), and each of the two first plates (411) and the two second plates (412) is connected by a connecting plate (42). The second plate (412) passes through the sliding bracket (6) and the oil filling box (7), and is detachably connected to the first plate (411); One of the connecting plates (42) is connected to the drive unit.

9. The novel reciprocating pump as described in claim 8, characterized in that: The side plate (41) also includes a U-shaped plate (413), which is connected to the first plate (411) and is snapped into the second plate (412) and fixed by fasteners.

10. The novel reciprocating pump as described in claim 1, characterized in that: It also includes a connecting shaft (8), which is disposed at one end of the connecting frame (4) and is used to connect the driving component.

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