Duplex gear pump

Abstract

The utility model discloses a duplex gear pump and relates to the technical field of gear pumps. The pump body comprises pump body shells, rotating assemblies, mounting strips and connecting strips, meshing gears which are meshed with each other are rotationally connected into the two pump body shells, the rotating assemblies are jointly and movably connected to the upper portions of the interiors of the two different pump body shells in a penetrating mode, and the connecting strips are fixed to the two sides of one pump body shell. The length direction of the two connecting strips is parallel to the length direction of the rotating assembly, the inner centers of the two connecting strips are in threaded connection with penetrating screws in a penetrating mode along the central axis, fixing columns are symmetrically fixed to the two side faces, below the two connecting strips, of the pump body shell, and a mounting strip is arranged at the end, away from the pump body shell, of each fixing column. By arranging the pump body shell, the rotating assembly, the mounting strip and the connecting strip, the problems that the dual gear pump is not good enough in applicability to conveying angles of different pipelines, and the gear pump is not good enough in applicability to mounting holes of different mounting devices are solved.

Description

Technical Field

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

[0002] A double gear pump is a hydraulic pump consisting of two gear pumps, which are usually installed on the same drive shaft. This pump can provide two different flow outputs and is suitable for hydraulic systems that require different flow control. The double gear pump can be adjusted to achieve single-acting or double-acting working modes according to the working requirements of the system. In the single-acting mode, the gear pump works in one direction to achieve oil suction and oil pressure, while in the double-acting mode, the gear pump works in both directions to provide higher flow output, but it still has the following disadvantages in actual use:

[0003] During the operation of the double gear pump, it works directly through a housing and two chambers. During the operation, the gear pump is installed at a close position. When the pipeline conveying the liquid has different conveying angles, the pipeline is bent, resulting in power waste;

[0004] During the installation process, the double gear pump is directly installed in the appropriate position using a suitable structure. When working, the gear pump is directly installed on the workbench through the legs. However, the mounting hole positions of different mounting equipment are different, and the gear pump is not suitable for the mounting holes of different mounting equipment. Utility Model Content

[0005] The purpose of the utility model is to provide a double gear pump, which solves the problem that the double gear pump is not good enough for different pipeline delivery angles and the gear pump is not good enough for the mounting holes of different mounting equipment by arranging a pump body shell, a rotating assembly, a mounting bar and a connecting bar.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a double gear pump, including a pump body shell, a rotating component, a mounting bar and a connecting bar. The two pump body shells are both rotatably connected with meshing gears that mesh with each other. The upper parts of the two different pump body shells are connected together with the rotating component for active connection. Connecting bars are fixed on both sides of one of the pump body shells. The length direction of the two connecting bars is parallel to the length direction of the rotating component. The inner centers of the two connecting bars are connected with through screws through threads along the central axis. Fixed columns are symmetrically fixed on the two side surfaces of the pump body shell below the two connecting bars. A mounting bar is provided at one end of each fixing column away from the pump body shell. When working, the pump body shell provides dual input and output functions. When the rotating component rotates, the meshing gears in the pump body shell are driven to rotate. The pump body shell is installed on an external support table through the cooperation of the mounting bar, and the through screw is threadedly connected therein through the connecting bar.

[0008] Furthermore, a delivery pipe is fixedly connected to the center of both sides of the pump body shell, and the inner diameters of the two delivery pipes are the same. The meshing gears in the pump body shell corresponding to the position of the rotating component are provided with a through hole along the central axis. The liquid enters and exits the pump body shell through the delivery pipe, and the inner core gear fixes the shaft through the through hole.

[0009] Furthermore, the rotating assembly includes a fixed shaft, which is inserted into the pump body shell and fixed in a through hole in the meshing gear. The two ends of the pump body shells outside the fixed shaft are close to each other and are rotatably connected to each other. When the fixed shaft rotates, the meshing gear is driven to rotate.

[0010] Furthermore, the rotating assembly also includes a turntable and an input shaft, turntables are fixed at both ends of the fixed shaft, the turntables abut against the ends of the two pump body shells that are away from each other, and an input shaft is fixed at the center of one end of the turntable away from the fixed shaft. When the rotating assembly rotates through the input shaft, the turntable and the fixed shaft are driven to rotate, and the input shaft is connected to the external rotating structure.

[0011] Furthermore, a rotating bolt is connected with a transverse thread in the fixing column, the bolt head of the rotating bolt is movably connected in the mounting strip, and the rod of the rotating bolt is movably connected to a side of the mounting strip close to the fixing column, and a socket is provided at the upper part of the mounting strip away from the fixing column, and the socket corresponds to the center position of the bolt head, and a mounting frame is rotatably connected to a position symmetrical to the rotating bolt in the lower part of the mounting strip. The fixing column is rotated by the rotating bolt, so that the position between the fixing column and the mounting strip is changed, and the housing of the group is installed by inserting the mounting bolt into the mounting frame.

[0012] Furthermore, a rotating frame is fixed to the end of the through screw away from the adjacent ends of the two pump body shells, and the end of the through screw away from the rotating frame is rotatably connected to a push plate. The through screw rotates through the rotating frame to drive the push plate to move.

[0013] The utility model has the following beneficial effects:

[0014] The utility model solves the problem that the double gear pump is not well applicable to different pipeline delivery angles by arranging a pump body shell, a rotating assembly and a connecting strip. The angle between the two pump body shells is determined, and the pump body shells are rotated. When the end faces of the two pump body shells need to overlap with each other, the two pump body shell end faces are rotated to overlap with each other, and the rotating frame is rotated until the two push plates contact the two pump body shell side faces at the same time. When a certain angle is required between the two pump body shells, the two rotating frames are first rotated until the two push plates leave the pump body shells to which the connecting strip is not fixed, and then the two pump body shells are rotated to form a suitable angle between the two pump body shells, and then the rotating frame is rotated until the push plates are pressed against the pump body shells, so that the two pump body shells are well restricted, making the double gear pump better applicable to different pipeline delivery angles.

[0015] The utility model solves the problem that the gear pump is not sufficiently applicable to the mounting holes of different mounting equipment by arranging a pump body shell, a rotating assembly and a mounting strip. The mounting position of the pump body shell is determined, the mounting strip is rotated to install the corresponding structure at a suitable position, the mounting frame is rotated so that the mounting frame is aligned with the mounting structure, a hexagonal wrench is inserted into the socket on the mounting strip, and then inserted into the bolt head of the rotating bolt, and the rotating bolt is driven to rotate during rotation, thereby changing the position between the fixing column and the pump body shell, so that the mounting frame is aligned with the mounting position, and the mounting frame cooperates with the installation of the mounting bolt, so that the gear pump is better applicable to the mounting holes of different mounting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a three-dimensional diagram of the assembly structure of a double gear pump;

[0018] Figure 2 It is a three-dimensional diagram of the cross-sectional structure of the pump shell;

[0019] Figure 3 It is a three-dimensional diagram of the rotating component structure;

[0020] Figure 4It is a three-dimensional diagram of the installation strip structure;

[0021] Figure 5 It is a three-dimensional diagram of the connecting strip structure.

[0022] Reference numerals:

[0023] 1. Pump housing; 101. Meshing gear; 102. Through hole; 103. Delivery pipe; 2. Rotating assembly; 201. Fixed shaft; 202. Turntable; 203. Input shaft; 3. Mounting bar; 301. Fixed column; 302. Rotating bolt; 303. Socket; 304. Mounting frame; 4. Connecting bar; 401. Push plate; 402. Through screw; 403. Rotating frame. DETAILED DESCRIPTION

[0024] 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 of 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. Specific embodiment 1

[0025] See also Figure 1-4 The utility model is a double gear pump, including a pump housing 1, a rotating assembly 2, a mounting bar 3 and a connecting bar 4. The two pump housings 1 are both rotatably connected with meshing gears 101 that mesh with each other. The pump housing 1 mounts the meshing gears 101 therein. When the meshing gears 101 in the same pump housing 1 rotate with each other, the liquid is pumped. The upper parts of the two pump housings 1 are connected with a rotating assembly 2 that is movably connected. When the rotating assembly 2 rotates, the meshing gears 101 in the two pump housings 1 are driven to rotate. The two ends of one pump housing 1 are connected to the rotating assembly 2. Both sides are fixed with connecting strips 4, the length direction of the two connecting strips 4 is parallel to the length direction of the rotating component 2, the inner centers of the two connecting strips 4 are threadedly connected with through screws 402 along the central axis, and the through screws 402 are threadedly connected therein through the connecting strips 4, and the two side surfaces of the pump body shell 1 under the two connecting strips 4 are symmetrically fixed with fixing columns 301, and the mounting strips 3 are set thereon through the fixing columns 301, and the end of each fixing column 301 away from the pump body shell 1 is provided with a mounting strip 3, and the mounting frame 304 is installed thereon through the mounting strip 3.

[0026] Specifically, a delivery pipe 103 is fixedly connected to the center of both sides of the pump body shell 1, and the inner diameters of the two delivery pipes 103 are the same. The meshing gear 101 corresponding to the position of the rotating component 2 in the pump body shell 1 is provided with a through hole 102 along the central axis. The delivery pipes 103 on both sides of the pump body shell 1 are respectively connected to the external input and output pipelines of the hydraulic oil. The pump body shell 1 inputs and outputs liquid through the delivery pipe 103, and the fixed shaft 201 is fixed through the through hole 102. The four delivery pipes 103 are respectively connected to different input and output control pipelines, so that the input and output in the two pump body shells 1 can be controlled during operation.

[0027] Furthermore, the rotating component 2 includes a fixed shaft 201, which is inserted through the pump body shell 1 and fixed in the through hole 102 in the meshing gear 101. The ends of the two pump body shells 1 outside the fixed shaft 201 that are close to each other are rotatably connected to each other. The rotating component 2 is fixed in the meshing gear 101 through the fixed shaft 201. When the fixed shaft 201 rotates, it drives the meshing gears 101 in the two pump body shells 1 to rotate, thereby performing the liquid pumping operation.

[0028] Furthermore, the rotating component 2 also includes a turntable 202 and an input shaft 203. Turntables 202 are fixed at both ends of the fixed shaft 201. The turntables 202 abut against the ends of the two pump body shells 1 that are away from each other. An input shaft 203 is fixed at the center of one end of the turntable 202 away from the fixed shaft 201. The rotating component 2 limits the fixed shaft 201 in the pump body shell 1 through the turntable 202, and is connected to the external driving structure through the input shaft 203, so that power is transmitted to the fixed shaft 201, driving the meshing gear 101 to rotate.

[0029] Furthermore, a rotating bolt 302 is connected to the fixing column 301 through a transverse thread, and the bolt head of the rotating bolt 302 is movably connected to the mounting bar 3, and the rod of the rotating bolt 302 is movably connected to the side of the mounting bar 3 close to the fixing column 301. A socket 303 is provided on the upper part of the mounting bar 3 away from the fixing column 301, and the socket 303 corresponds to the center position of the bolt head. A mounting bracket 304 is rotatably connected to the lower part of the mounting bar 3 at a position symmetrical to the rotating bolt 302, and the mounting bar 3 is movably connected therein through the bolt head of the rotating bolt 302. By inserting a hexagonal wrench into the socket 303 on the mounting bar 3 and then into the bolt head of the rotating bolt 302, the rotating bolt 302 is driven to rotate during rotation, thereby changing the position between the fixing column 301 and the pump body housing 1, and the mounting bracket 304 is suitable for different installation directions of the mounting bar 3.

[0030] The operation process of this embodiment is as follows: when working, first determine the installation position of the pump body shell 1, then rotate the installation bar 3 to install the corresponding structure at the appropriate position, rotate the mounting frame 304, so that the mounting frame 304 is aligned with the mounting structure, insert the hexagonal wrench into the socket 303 on the installation bar 3, and then insert it into the bolt head of the rotating bolt 302, and drive the rotating bolt 302 to rotate during rotation, change the position between the fixing column 301 and the pump body shell 1, so that the mounting frame 304 is aligned with the installation position, and the mounting frame 304 cooperates with the installation of the mounting bolt. Specific embodiment 2

[0031] See also Figure 1 , 2 , 3, 5, on the basis of the specific embodiment 1, a rotating frame 403 is fixed to the end of the through screw 402 away from the adjacent ends of the two pump body casings 1, and the end of the through screw 402 away from the rotating frame 403 is rotatably connected to the push plate 401. The through screw 402 rotates through the rotating frame 403, driving the through screw 402 to rotate. When the through screw 402 rotates, it drives the push plate 401 to move to the sides of the other pump body casing 1, or abuts against the end of the other pump body casing 1, thereby limiting the position between the two pump body casings 1.

[0032] The operation process of this embodiment is as follows: when working, first determine the angle between the two pump housings 1, rotate the pump housings 1, and when the end faces of the two pump housings 1 need to overlap each other, rotate the two pump housings 1 end faces to overlap each other, rotate the rotating frame 403 until the two push plates 401 contact the sides of the two pump housings 1 at the same time, and when a certain angle is required between the two pump housings 1, first rotate the two rotating frames 403 until the two push plates 401 are completely located outside the pump housings 1 fixed to the connecting strip 4, determine the direction and angle of rotation between the two pump housings 1, and then rotate the two pump housings 1 (when installing, use the end of the pump housing 1 fixed with the connecting strip 4 close to the input shaft 203 as the front view reference plane, and when the delivery pipe 103 is higher on the left and lower on the right, rotate the pump housing 1 located at the rear clockwise, and when When the delivery pipe 103 is lower on the left and higher on the right, the pump body shell 1 located at the rear is rotated counterclockwise. The rotation angle between the two pump body shells 1 is based on actual needs, until the delivery direction of the delivery pipe 103 is straighter than the external pipeline), so that there is a suitable angle between the two pump body shells 1, observe the staggered surface between the two pump body shells 1, and rotate the corresponding rotating frame 403 on the connecting strip 4 that overlaps with the staggered surface until the push plate 401 is pressed against the pump body shell 1, so that the two pump body shells 1 are well restricted. After completion, connect it with the external driving structure through the input shaft 203, so that the power is transmitted to the fixed shaft 201, driving the meshing gear 101 to rotate. When the meshing gear 101 rotates, the oil is pumped into the pump body shell 1 from one delivery pipe 103, and then discharged to the oil power use structure through the other delivery pipe 103.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double gear pump, comprising a pump housing (1), a rotating assembly (2), a mounting bar (3) and a connecting bar (4), Features: The two pump housings (1) are both rotatably connected with meshing gears (101) that mesh with each other. The upper parts of the two different pump housings (1) are connected and movably connected with a rotating assembly (2). Connecting bars (4) are fixed on both sides of one of the pump housings (1). The length directions of the two connecting bars (4) are parallel to the length direction of the rotating assembly (2). The centers of the two connecting bars (4) are connected with through-threaded through screws (402) along the central axis. Fixed columns (301) are symmetrically fixed on both sides of the pump housing (1) below the two connecting bars (4). A mounting bar (3) is provided on the end of each fixing column (301) away from the pump housing (1).

2. A double gear pump according to claim 1, Features: The centres of both sides of the pump housing (1) are fixedly connected with delivery pipes (103), the inner diameters of the two delivery pipes (103) being the same, and a through hole (102) is provided along the central axis through the meshing gear (101) in the pump housing (1) corresponding to the position of the rotating assembly (2).

3. A double gear pump according to claim 2, Features: The rotating assembly (2) comprises a fixed shaft (201), the fixed shaft (201) being inserted through the pump housing (1) and fixed in a through hole (102) in the meshing gear (101), and the ends of the two pump housings (1) outside the fixed shaft (201) that are close to each other are rotatably connected to each other.

4. A double gear pump according to claim 3, Features: The rotating assembly (2) further comprises a rotating disk (202) and an input shaft (203), the rotating disks (202) being fixed at both ends of the fixed shaft (201), the rotating disks (202) being abutted against ends of two pump housings (1) that are away from each other, and the input shaft (203) being fixed at the center of one end of the rotating disk (202) that is away from the fixed shaft (201).

5. A double gear pump according to claim 1, Features: A rotating bolt (302) is transversely threadedly connected inside the fixing column (301); the bolt head of the rotating bolt (302) is movably connected inside the mounting bar (3); and the shaft of the rotating bolt (302) is movably connected to a side of the mounting bar (3) close to the fixing column (301); a socket (303) is provided at the upper portion of the side of the mounting bar (3) away from the fixing column (301); the socket (303) corresponds to the center position of the bolt head; and a mounting frame (304) is rotatably connected to the lower portion of the mounting bar (3) at a position symmetrical to the rotating bolt (302).

6. A double gear pump according to claim 1, Features: A rotating frame (403) is fixed to the end of the through screw (402) away from the adjacent ends of the two pump housings (1), and the end of the through screw (402) away from the rotating frame (403) is rotatably connected to a push plate (401).

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