Large-displacement piston pump

Abstract

The utility model provides a large-displacement piston pump which comprises a motor, a transmission piece and a pump set, and the motor is used for outputting power. The multiple transmission parts are arranged side by side, the transmission part close to the motor is used for receiving power, and the front transmission part provides power for the rear transmission part. Each transmission piece is connected with two pump sets, and the two pump sets are oppositely located on the two sides of the transmission piece. The multiple transmission parts are arranged side by side, each transmission part is connected with the two pump sets, the previous transmission part provides power for the next transmission part, in this way, the multiple transmission parts can be driven by the motor to act, then the multiple pump sets are driven to work, serial connection of the pump sets is achieved, and therefore the conveying efficiency can be improved; and multi-direction conveying work is achieved.

Description

Technical Field

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

[0002] A piston pump is a positive displacement pump that operates by changing the volume of a cylinder through the reciprocating motion of a piston, thereby drawing in and out liquid. Piston pumps are widely used in industries such as industry, agriculture, petroleum, chemical engineering, and construction due to their simple structure, reliable operation, and wide range of applications.

[0003] The existing invention patent application with application publication number CN106870350A discloses a piston pump, which includes: a pump cylinder body, a pump base body connected to the pump cylinder body, a piston with its two ends respectively located in the pump cylinder body and the pump base body, a transmission device arranged in the pump base body, and connecting rods respectively connecting the piston and the transmission device.

[0004] As in the above technical solution, the piston of the pump is driven to move by a transmission device and a connecting rod to achieve suction work; however, current piston pumps are mostly single-drive, single-pump structures, which not only have low delivery efficiency but also have limited delivery output direction. Utility Model Content

[0005] In view of this, the utility model proposes a large-displacement piston pump with high delivery efficiency and multi-directional output, so as to solve the problems of limited output direction and low efficiency of existing piston pumps.

[0006] The technical solution of the present invention is implemented as follows: The present invention provides a large-displacement piston pump, including a motor, a transmission member and a pump group, wherein:

[0007] The motor is used to output power; a plurality of transmission members are arranged in parallel, and a transmission member close to the motor is used to receive power, and the transmission member in front provides power to the transmission member in the back;

[0008] Each transmission member is connected to two pump groups, and the two pump groups are located on two sides of the transmission member opposite to each other.

[0009] On the basis of the above technical solution, preferably, the transmission member includes a driving gear, a driven gear, a side wheel and a connecting rod, wherein:

[0010] The driving gear is connected to the main shaft of the motor;

[0011] There are two driven gears, which are located on both sides of the driving gear and mesh with the driving gear.

[0012] The side wheels are arranged on the side faces of the driven gear;

[0013] One end of the connecting rod is rotatably connected to the side wheel, and the end of the connecting rod is eccentric relative to the side wheel;

[0014] The other end of the connecting rod is connected to the movable end of the pump group.

[0015] On the basis of the above technical solution, preferably, the transmission member further includes a rotating shaft, and the rotating shaft is arranged on the side of the side wheel;

[0016] The rotating shaft is connected to two connecting rods, and the angle between the two connecting rods is ninety degrees.

[0017] On the basis of the above technical solution, preferably, it further includes a transmission shaft, a bearing seat and a coupling, wherein:

[0018] The transmission shaft passes through the driving gear and is connected to the main shaft of the motor;

[0019] The bearing seat is used to support the transmission shaft, and each driving gear is provided with a bearing seat on both sides;

[0020] The transmission shafts on two adjacent driving gears are connected by a coupling.

[0021] On the basis of the above technical solution, preferably, the bearing seat includes a base and a top cover, wherein:

[0022] The base and the motor are relatively fixed, and the transmission shaft is overlapped on the base;

[0023] The top cover is connected to the base to limit the transmission shaft.

[0024] On the basis of the above technical solution, preferably, it further includes a support shaft, which is connected to the driven gear and supported by a bearing seat.

[0025] On the basis of the above technical solution, preferably, the bearing seat includes a base, a top cover, a connecting cover and a transverse cover, wherein:

[0026] The base and the motor are relatively fixed, and the transmission shaft is overlapped on the base;

[0027] The top cover is connected to the base to limit the transmission shaft;

[0028] The connecting cover spans the driving gear to connect the top covers on both sides of the driving gear;

[0029] The transverse cover is arranged between the two driving gears and is connected to the connecting cover.

[0030] On the basis of the above technical solution, preferably, it further includes a carrier plate, the base is arranged on the carrier plate, and the base and the carrier plate are an integrated structure;

[0031] The top cover, connecting cover and cross cover are an integrated structure.

[0032] On the basis of the above technical solution, preferably, both ends of the connecting rod are configured as arc-shaped structures, and the arc diameter of one end of the connecting rod rotatably connected to the side wheel is larger than the arc diameter of the other end.

[0033] On the basis of the above technical solution, preferably, the pump group includes a pump body, an input valve, an output valve and a piston rod, wherein,

[0034] The pump body is a three-way structure;

[0035] The input valve, the output valve and the piston rod are respectively arranged in a through port of the pump body, and the piston rod is connected to the transmission member.

[0036] The large displacement piston pump of the utility model has the following beneficial effects compared with the prior art:

[0037] (1) By arranging multiple transmission members in parallel, and each transmission member is connected to two pump groups, the preceding transmission member provides power to the following transmission member. In this way, the motor can drive several transmission members to operate, and then drive several pump groups to work, thus realizing the series connection of the pump groups, thereby improving the conveying efficiency and realizing multi-directional conveying work;

[0038] (2) In the transmission part, the driving gear drives the driven gear and the side wheel to rotate, and a connecting rod is eccentrically installed on the side wheel, so that the connecting rod can move back and forth, thereby driving the pump group to achieve the conveying work;

[0039] (3) The driving gears of adjacent transmission parts are connected through transmission shafts and couplings and supported by bearing seats, wherein the base of the bearing seat and the carrier plate are set as an integrated structure, and multiple bases are connected with the top cover, connecting cover and cross cover of the integrated structure, so as to ensure the coaxiality of multiple transmission shafts and ensure the stability of the transmission structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 This is a top view of the large-displacement piston pump of the utility model;

[0042] Figure 2 This is a three-dimensional diagram of the connection structure of the motor and transmission parts of the large-displacement piston pump of the present invention;

[0043] Figure 3A perspective view of a transmission member of a large-displacement piston pump according to the present invention having two connecting rods;

[0044] Figure 4 This is a cross-sectional view of the pump unit of the large-displacement piston pump of the utility model;

[0045] Figure 5 A perspective view of a large-displacement piston pump bearing seat provided with a connecting cover and a transverse cover according to the present invention;

[0046] Figure 6 For the utility model Figure 5 A magnified view of the structure at point A;

[0047] In the figure: 1. Motor; 2. Transmission part; 21. Driving gear; 22. Driven gear; 23. Side wheel; 24. Connecting rod; 25. Rotating shaft; 3. Pump group; 31. Pump body; 32. Input valve; 33. Output valve; 34. Piston rod; 4. Transmission shaft; 5. Bearing seat; 51. Base; 52. Top cover; 53. Connecting cover; 54. Cross cover; 6. Coupling; 7. Support shaft; 8. Carrier plate. DETAILED DESCRIPTION

[0048] The following will be combined with 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.

[0049] like Figures 1 to 6 As shown, the large-displacement piston pump of the present invention includes a motor 1, a transmission member 2, a pump group 3, a transmission shaft 4, a bearing seat 5, a coupling 6, a support shaft 7 and a carrier plate 8.

[0050] like Figure 1 and Figure 2 As shown, the motor 1 is used to output power; multiple transmission members 2 are arranged in parallel, and the transmission member 2 close to the motor 1 is used to receive power. The front transmission member 2 provides power to the rear transmission member 2; each transmission member 2 is connected to at least two pump groups 3, and the two pump groups 3 are located on both sides of the transmission member 2 opposite to each other;

[0051] As in the above structure, the motor 1 is used to transmit torque to drive the transmission member 2 to move, and the pump group 3 is connected to the transmission member 2, thereby relying on the power output by the transmission member 2 to carry out the medium transportation work;

[0052] Among them, there are multiple transmission parts 2, which are connected to each other. The previous transmission part 2 provides power to the subsequent transmission part 2. In this way, several pump groups 3 can be connected in series to realize multi-directional medium transportation and multi-directional medium transportation at the same time.

[0053] like Figure 2 As shown, the transmission member 2 includes a driving gear 21, a driven gear 22, a side wheel 23 and a connecting rod 24, wherein the driving gear 21 is connected to the main shaft of the motor 1; two driven gears 22 are provided, and the two driven gears 22 are located on both sides of the driving gear 21 and mesh with the driving gear 21; the side wheel 23 is provided on the side of the driven gear 22; one end of the connecting rod 24 is rotatably connected to the side wheel 23, and the end of the connecting rod 24 is eccentric relative to the side wheel 23; the other end of the connecting rod 24 is connected to the movable end of the pump group 3;

[0054] As in the above structure, the transmission member 2 is a gear set, wherein the driving gear 21 is driven by the main shaft of the motor 1, thereby driving the two driven gears 22 and the side wheels 23 to rotate;

[0055] Since the connecting rod 24 is rotatably connected to the side wheel 23 and is eccentrically arranged, when the side wheel 23 rotates, the connecting rod 24 will perform a reciprocating motion, thereby driving the pump group 3 to work and realize medium transportation.

[0056] like Figure 3 As shown, the transmission member 2 further includes a rotating shaft 25, which is arranged on the side of the side wheel 23; the rotating shaft 25 is connected to two connecting rods 24, and the angle between the two connecting rods 24 is ninety degrees;

[0057] As described above, the rotating shaft 25 is provided on the side wheel 23 to connect the connecting rod 24;

[0058] In this structure, a rotating shaft 25 is connected to two connecting rods 24, so that a single transmission member 2 can simultaneously drive four pump groups 3 to work through two driven gears 22, which further improves the delivery capacity of this piston pump;

[0059] The included angle between the two connecting rods 24 is 90 degrees, which can avoid the problem of installation interference between adjacent pump groups 3;

[0060] Of course, the included angle of the two connecting rods 24 will be adaptively adjusted according to the specific structure and installation requirements of the pump group 3.

[0061] like Figure 2 As shown, the transmission shaft 4 passes through the driving gear 21 and is connected to the main shaft of the motor 1; the bearing seat 5 is used to support the transmission shaft 4, and a bearing seat 5 is provided on both sides of each driving gear 21; the transmission shafts 4 on two adjacent driving gears 21 are connected by a coupling 6;

[0062] As in the above structure, when power is transmitted, the driving gear 21 is connected in series through the transmission shaft 4 and the coupling 6, and is supported by the bearing seat 5 to ensure the stability of the structure;

[0063] Since the coupling 6 is a detachable component, the number of serial connections of the transmission members 2 can be adaptively adjusted to suit the working conditions.

[0064] like Figure 2 As shown, the bearing seat 5 includes a base 51 and a top cover 52, wherein the base 51 is fixed relative to the motor 1, and the transmission shaft 4 is overlapped on the base 51; the top cover 52 is connected to the base 51 to limit the transmission shaft 4;

[0065] As shown in the above structure, in this solution, the bearing seat 5 is a single body structure, that is, a bearing seat 5 is composed of a base 51 and a first top cover 52, and both ends of a single transmission shaft 4 are supported by a bearing seat 5 to ensure structural stability.

[0066] like Figure 2 and Figure 3 As shown, the support shaft 7 is connected to the driven gear 22, and the support shaft 7 is supported by the bearing seat 5;

[0067] As in the above structure, in order to ensure the stability of the engagement between the driven gear 22 and the driving gear 21 , a separate support shaft 7 is provided, and the driven gear 22 is also supported and fixed by the bearing seat 5 .

[0068] like Figure 5 and Figure 6 As shown, the bearing seat 5 includes a base 51, a top cover 52, a connecting cover 53 and a transverse cover 54, wherein the base 51 is fixed relative to the motor 1, and the transmission shaft 4 is overlapped on the base 51; the top cover 52 is connected to the base 51 to limit the transmission shaft 4; the connecting cover 53 spans the driving gear 21 to connect the top covers 52 on both sides of the driving gear 21; the transverse cover 54 is arranged between the two driving gears 21 and connected to the connecting cover 53;

[0069] As shown in the above structure, in this scheme, the bearing seat 5 adopts a connecting structure. The number of bases 51 of the bearing seat 5 remains unchanged, but multiple top covers 52 are connected by connecting covers 53 and cross covers 54 to form an integrated structure. When assembled, the connecting cover 53 corresponds to the driving gear 21, and the cross cover 54 covers the transmission shaft 4 and the coupling 6; this structure is conducive to ensuring the coaxiality of several transmission shafts 4 to ensure the stability of the transmission structure.

[0070] Furthermore, the base 51 is provided on the carrier plate 8, and the base 51 and the carrier plate 8 are an integrated structure; the top cover 52, the connecting cover 53 and the horizontal cover 54 are an integrated structure;

[0071] As in the above structure, in order to further ensure the relative stability of the components, all bases 51 are integrated through the carrier plate 8, so that when connected with the top cover 52, the connecting cover 53 and the transverse cover 54, the transmission member 2 can be accurately positioned.

[0072] like Figure 4 As shown, the pump group 3 includes a pump body 31, an input valve 32, an output valve 33 and a piston rod 34, wherein the pump body 31 is a three-way structure; the input valve 32, the output valve 33 and the piston rod 34 are each arranged in a through port of the pump body 31, and the piston rod 34 is connected to the transmission member 2;

[0073] As shown in the above structure, when the pump unit 3 is working, the connecting rod 24 drives the piston rod 34 to reciprocate, thereby cooperating with the input valve 32 and the output valve 33 to transport the medium;

[0074] Specifically, the input valve 32 and the output valve 33 use solenoid valves. When the piston rod 34 moves out of the pump body 31, the input valve 32 opens to suck in the medium. When the piston rod 34 moves into the pump body 31, the input valve 32 closes and the output valve 33 opens to output the medium, thereby realizing medium transportation.

[0075] like Figure 2 and Figure 3 As shown, both ends of the connecting rod 24 are configured as arc-shaped structures, and the arc diameter of one end of the connecting rod 24 that is rotatably connected to the side wheel 23 is larger than the arc diameter of the other end;

[0076] As shown in the above structure, under normal circumstances, the pump group 3 will be sealed by the shell. In order to prevent the swing of the connecting rod 24 from interfering with the sealed shell, the end of the connecting rod 24 facing the piston rod 34 is set smaller to ensure that the connecting rod 24 can swing normally and move back and forth.

[0077] Specific implementation steps:

[0078] During operation, the motor 1 drives the driving gear 21 of the transmission member 2 to rotate through the transmission shaft 4, the driving gear 21 drives the driven gear 22 and the side wheel 23 to rotate, the side wheel 23 drives the connecting rod 24 to move back and forth, and the connecting rod 24 drives the piston rod 34 to move back and forth, thereby cooperating with the opening and closing of the input valve 32 and the output valve 33 to realize the medium suction and discharge work;

[0079] At the same time, the transmission shaft 4 in the leading transmission member 2 also drives the rear transmission shaft 4 to rotate through the coupling 6, thereby making the rear transmission member 2 work, thereby realizing the series operation of several pump groups 3.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large displacement piston pump, characterized in that: It comprises a motor (1), a transmission member (2) and a pump group (3), wherein: The motor (1) is used to output power; A plurality of transmission members (2) are arranged in parallel, and the transmission member (2) close to the motor (1) is used to receive power, and the transmission member (2) in front provides power to the transmission member (2) in the back; Each transmission member (2) is connected to two pump groups (3), and the two pump groups (3) are located opposite to each other on two sides of the transmission member (2).

2. The large-displacement piston pump according to claim 1, characterized in that: The transmission member (2) includes a driving gear (21), a driven gear (22), a side wheel (23) and a connecting rod (24), wherein: The driving gear (21) is connected to the main shaft of the motor (1); There are two driven gears (22), which are located on both sides of the driving gear (21) and mesh with the driving gear (21). The side wheel (23) is arranged on the side surface of the driven gear (22); One end of the connecting rod (24) is rotatably connected to the side wheel (23), and the end of the connecting rod (24) is eccentric relative to the side wheel (23); The other end of the connecting rod (24) is connected to the movable end of the pump group (3).

3. The large-displacement piston pump according to claim 2, characterized in that: The transmission member (2) further comprises a rotating shaft (25), and the rotating shaft (25) is arranged on the side surface of the side wheel (23); The rotating shaft (25) is connected to two connecting rods (24), and the angle between the two connecting rods (24) is ninety degrees.

4. The large-displacement piston pump according to claim 3, characterized in that: It also includes a transmission shaft (4), a bearing seat (5) and a coupling (6), wherein: The transmission shaft (4) passes through the driving gear (21) and is connected to the main shaft of the motor (1); The bearing seat (5) is used to support the transmission shaft (4), and the bearing seat (5) is provided on both sides of each driving gear (21); The transmission shafts (4) on two adjacent driving gears (21) are connected via the coupling (6).

5. The large-displacement piston pump according to claim 4, characterized in that: The bearing seat (5) comprises a base (51) and a top cover (52), wherein: The base (51) and the motor (1) are relatively fixed, and the transmission shaft (4) is overlapped on the base (51); The top cover (52) is connected to the base (51) to limit the transmission shaft (4).

6. The large displacement piston pump according to claim 4, characterized in that: It also includes a support shaft (7), the support shaft (7) is connected to the driven gear (22), and the support shaft (7) is supported by the bearing seat (5).

7. The large-displacement piston pump according to claim 4, characterized in that: The bearing seat (5) comprises a base (51), a top cover (52), a connecting cover (53) and a transverse cover (54), wherein: The base (51) and the motor (1) are relatively fixed, and the transmission shaft (4) is overlapped on the base (51); The top cover (52) is connected to the base (51) to limit the transmission shaft (4); The connecting cover (53) spans the driving gear (21) to connect the top covers (52) on both sides of the driving gear (21); The transverse cover (54) is arranged between the two driving gears (21) and is connected to the connecting cover (53).

8. The large displacement piston pump according to claim 7, characterized in that: It also includes a carrier plate (8), the base (51) is arranged on the carrier plate (8), and the base (51) and the carrier plate (8) are an integrated structure; The top cover (52), the connecting cover (53) and the transverse cover (54) are an integrated structure.

9. The large displacement piston pump according to claim 2, characterized in that: Both ends of the connecting rod (24) are configured as arc-shaped structures, and the diameter of the arc at one end of the connecting rod (24) rotatably connected to the side wheel (23) is larger than the diameter of the arc at the other end.

10. The large-displacement piston pump according to any one of claims 1 to 9, characterized in that: The pump assembly (3) comprises a pump body (31), an input valve (32), an output valve (33) and a piston rod (34), wherein the pump body (31) is a three-way structure; The input valve (32), the output valve (33) and the piston rod (34) are each arranged in a through port of the pump body (31), and the piston rod (34) is connected to the transmission member (2).

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