Feeding system

Abstract

The utility model discloses a feeding system which comprises a first pump set, a second pump set, a feeding pipe and a discharging pipe. The feeding pipe is communicated with a feeding hole of the first pump set and a feeding hole of the second pump set; the discharge pipe is communicated with discharge ports of the first pump set and the second pump set; and the discharging flow of the first pump set and the discharging flow of the second pump set are mutually compensated, so that the discharging flow of the discharging pipe is stable, and the flow pulse at the discharging pipe is eliminated.

Description

Technical Field

[0001] This utility model relates to the field of material injection system technology, specifically to a material feeding system. Background Technology

[0002] In existing technologies, pumps are commonly used for slurry feeding, such as single screw pumps and diaphragm pumps. Due to their inherent structure, screw pumps cannot eliminate pressure fluctuations within the pipeline. Similarly, diaphragm pumps, when driven upwards by the eccentricity of the motor shaft, also generate fluid outlet pulses that cannot be directly eliminated. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a feeding system.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A feeding system includes a first pump set, a second pump set, an inlet pipe, and an outlet pipe;

[0006] The feed pipe is connected to the feed inlets of the first pump group and the second pump group;

[0007] The discharge pipe is connected to the discharge ports of the first pump group and the second pump group;

[0008] The discharge flow rates of the first pump set and the second pump set compensate for each other.

[0009] As described above, the first pump unit includes a first housing and a first piston. The first piston is slidably disposed within the first housing. The first housing is divided into a first left chamber and a first right chamber with the first piston as the boundary.

[0010] The first left cavity is provided with a first left discharge port and a first left inlet port;

[0011] The first right cavity is provided with a first right discharge port and a first right inlet port;

[0012] The second pump assembly includes a second housing and a second piston. The second piston is slidably disposed within the second housing. The second housing is divided into a second left chamber and a second right chamber by the second piston.

[0013] The second left cavity is provided with a second left discharge port and a second left inlet port;

[0014] The second right cavity is provided with a second right discharge port and a second right inlet port;

[0015] The first left inlet, the first right inlet, the second left inlet, the second right inlet, the first left outlet, the first right outlet, the second left outlet, and the second right outlet are all unidirectional.

[0016] As described above, in the feeding system, the opening and closing states of the first left discharge port are opposite to those of the first left inlet port, the opening and closing states of the first right discharge port are opposite to those of the first right inlet port, and the opening and closing states of the first left discharge port are the same as those of the first right inlet port.

[0017] The second left discharge port has the opposite opening and closing state to the second left inlet port, the second right discharge port has the opposite opening and closing state to the second right inlet port, and the second left discharge port has the same opening and closing state as the second right inlet port.

[0018] The feeding system described above also includes a frame, and the first pump set and the second pump set have the same structure;

[0019] The first housing is fixed to the frame;

[0020] The first pump assembly also includes a first piston rod, a piston rod connecting block, a first slide rail, and a first drive assembly;

[0021] One end of the first piston rod is fixedly connected to the first piston, and part of the first piston rod is located in the first left cavity, while the other part extends out of the first left cavity and is fixedly connected to the piston rod connecting block; the piston rod connecting block slides on the first slide rail;

[0022] The first drive unit is mounted on the frame, and the output end of the first drive unit is connected to the first piston rod;

[0023] The first drive group drives the piston rod connecting block to slide on the first slide rail, and drives the first piston rod and the first piston to slide inside the first housing.

[0024] As described above, in the feeding system, the first drive group includes a first drive component and a lead screw;

[0025] The lead screw is threadedly connected to the piston rod connecting block; the first driving member drives the lead screw to rotate, so as to cause the piston rod connecting block to slide on the first slide rail and the first piston to slide inside the first housing.

[0026] The feeding system described above also includes a piston rod fixing seat and a second slide rail; the first piston is fixed on the first piston rod, part of the first piston rod is located in the first right cavity, and the other part of the first piston rod extends out of the first right cavity and is fixedly connected to the piston rod fixing seat, and the piston rod fixing seat slides on the second slide rail.

[0027] As described above, the feeding system includes a main feeding pipe, a first feeding branch pipe connected to the main feeding pipe and the first pump group, and a second feeding branch pipe connected to the main feeding pipe and the second pump group.

[0028] The first feed branch pipe is equipped with a first check valve, which is used to prevent liquid in the first feed branch pipe from flowing back into the feed main pipe.

[0029] The second feed branch pipe is equipped with a second check valve, which is used to prevent liquid in the second feed branch pipe from flowing back into the feed main pipe.

[0030] As described above, the discharge pipe of the feeding system includes a main discharge pipe, a first discharge branch pipe connected to the main discharge pipe and the first pump group, and a second discharge branch pipe connected to the main discharge pipe and the second pump group.

[0031] The feeding system described above also includes a frame, on which the first pump group, the second pump group, the inlet pipe and the outlet pipe are mounted, and a moving device is provided at the bottom of the frame.

[0032] In the feeding system described above, the moving device is a wheel.

[0033] The beneficial effects of this utility model are:

[0034] The feed pipe is connected to the feed inlets of the first pump group and the second pump group, and the discharge pipe is connected to the discharge outlets of the first pump group and the second pump group. The discharge flow rates of the first pump group and the second pump group compensate each other to stabilize the flow rate at the discharge pipe and eliminate flow pulses at the discharge pipe. Attached Figure Description

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Figure 1 This is a schematic diagram of the working principle of this system;

[0037] Figure 2 This is one of the structural diagrams of this system;

[0038] Figure 3 This is the second structural diagram of this system;

[0039] Figure 4 This is a structural schematic diagram of the first or second pump unit;

[0040] Figure 5 It is one of the cross-sectional views of the first pump set or the second pump set;

[0041] Figure 6This is a second sectional view of either the first or second pump unit;

[0042] The attached figures are labeled as follows:

[0043] 1-First pump assembly, 11-First housing, 12-First piston, 13-First left chamber, 131-First left outlet, 132-First left inlet, 14-First right chamber, 141-First right outlet, 142-First right inlet, 151-First piston rod, 152-Piston rod connecting block, 16-First slide rail, 17-First drive assembly, 171-First drive component, 172-Lead screw, 182-Piston rod fixing seat, 19-Second slide rail.

[0044] 2-Second pump assembly, 21-Second housing, 22-Second piston, 23-Second left chamber, 231-Second left outlet, 232-Second left inlet, 24-Second right chamber, 241-Second right outlet, 242-Second right inlet

[0045] 3-Inlet pipe, 31-Main inlet pipe, 32-First inlet branch pipe, 321-First check valve, 33-Second inlet branch pipe, 331-Second check valve

[0046] 4-Discharge pipe, 41-Main discharge pipe, 42-First discharge branch pipe, 43-Second discharge branch pipe,

[0047] 5-Frame, 6-Mobile device. Detailed Implementation

[0048] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0049] Reference Figure 1 A feeding system includes a first pump group 1, a second pump group 2, an inlet pipe 3, and an outlet pipe 4;

[0050] The feed pipe 3 is connected to the feed inlets of the first pump group 1 and the second pump group 2;

[0051] The discharge pipe 4 is connected to the discharge ports of the first pump group 1 and the second pump group 2;

[0052] The discharge flow rates of the first pump group 1 and the second pump group 2 compensate each other to stabilize the discharge flow rate of the discharge pipe 4 and eliminate flow pulses at the discharge pipe 3.

[0053] Pump pulsation refers to the periodic fluctuations in fluid flow rate or pressure that occur when a pump is transporting fluid, due to the pump's operating principle or structural characteristics. This fluctuation manifests as discontinuous fluid flow; the fluid does not flow smoothly but rather in pulsating bursts.

[0054] The working principle of this embodiment is as follows: When the first pump group 1 pumps out slurry, the flow rate of slurry pumped out to the discharge pipe 4 gradually increases; while the flow rate of the second pump group 2 pumped to the discharge pipe 4 gradually decreases due to the pulse; and vice versa; therefore, the discharge flow rates of the first pump group 1 and the second pump group 2 compensate each other, and the flow rate of slurry flowing out from the discharge pipe 4 always remains stable.

[0055] Reference Figures 4-6 In one embodiment, the first pump assembly 1 includes a first housing 11 and a first piston 12. The first piston 12 is slidably disposed in the first housing 11. The first housing 11 is divided into a first left chamber 13 and a first right chamber 14 with the first piston 12 as the boundary.

[0056] The first left cavity 13 is provided with a first left discharge port 131 and a first left inlet port 132;

[0057] The first right cavity 14 is provided with a first right discharge port 141 and a first right inlet port 142;

[0058] The second pump assembly 2 includes a second housing 21 and a second piston 22. The second piston 22 is slidably disposed in the second housing 21. The second housing 21 is divided into a second left chamber 23 and a second right chamber 24 with the second piston 22 as the boundary.

[0059] The second left cavity 23 is provided with a second left discharge port 231 and a second left inlet port 232;

[0060] The second right cavity 24 is provided with a second right discharge port 241 and a second right inlet port 242;

[0061] The first left inlet 132, the first right inlet 142, the second left inlet 232, the second right inlet 242, the first left outlet 131, the first right outlet 141, the second left outlet 231, and the second right outlet 241 are all unidirectional to avoid slurry backflow.

[0062] The working principle of the first pump group 1 is as follows: When the first piston 12 moves toward the left side of the first housing 11, the slurry in the first left cavity 13 is pumped out through the first left outlet 131, and the first right cavity 14 forms a negative pressure, so the slurry enters the first right cavity 14 through the first right inlet 142; when the first piston 12 moves toward the right side of the first housing 11, the slurry in the first right cavity 14 is pumped out through the first right outlet 141, and the slurry enters the first left cavity 13 through the second left inlet 232; the working principle of the second pump group 2 is the same as that of the first pump group 1, and will not be described in detail here.

[0063] Therefore, by controlling the moving speed of the first piston 12 and the second piston 22, the pumping flow rate of the first pump group 1 and the second pump group 2 can be controlled, thereby controlling the pressure fluctuation at the discharge pipe 3 and ensuring the stability of the slurry flow rate in the discharge pipe 3.

[0064] Specifically, the opening and closing states of the first left discharge port 131 and the first left inlet port 132 are opposite, the opening and closing states of the first right discharge port 141 and the first right inlet port 142 are opposite, and the opening and closing states of the first left discharge port 131 and the first right inlet port 142 are the same.

[0065] When the first piston 12 moves toward the left side of the first housing 11, the slurry in the first left cavity 13 is pumped out through the first left outlet 131. Therefore, it can be known that the first left outlet 131 is in the open state, the first left inlet 132 is in the closed state, the first right inlet 142 is in the open state, and the first right outlet 141 is in the closed state. This can prevent the slurry in the first left cavity 13 from being pumped out through the first left inlet 132, and prevent the first right outlet 141 from sucking in the slurry pumped out by the first left inlet 132, thus avoiding slurry backflow and causing flow fluctuations.

[0066] The second left discharge port 231 has the opposite opening and closing state to the second left inlet port 232, and the second right discharge port 241 has the opposite opening and closing state to the second right inlet port 242. The second left discharge port 231 has the same opening and closing state as the second right inlet port 242. The working principle of the second pump group 2 is the same as that of the first pump group 1, and will not be described in detail here.

[0067] Specifically, it also includes a frame 5, and the first pump group 1 and the second pump group 2 have the same structure;

[0068] The first housing 11 and the second housing 21 are fixed to the frame 5;

[0069] Reference Figures 3-5Taking the first pump group 1 as an example, the first pump group 1 further includes a first piston rod 151, a piston rod connecting block 152, a first slide rail 16, and a first drive group 17; the first piston rod 151 is fixedly connected to the first piston 12, and part of the first piston rod 151 is located in the first left cavity 13, and the other part extends out of the first left cavity 13 and is fixedly connected to the piston rod connecting block 152; the piston rod connecting block 152 slides on the first slide rail 16; the first drive group 17 is installed on the frame 5, and the output end of the first drive group 17 is connected to the first piston rod 151; the first drive group 17 drives the piston rod connecting block 152 to slide on the first slide rail 16, and drives the first piston rod 151 and the first piston 12 to slide in the first housing 11, which helps to accurately control the stroke of the first piston 12, keep the movement direction of the first piston 12 from deviating, accurately control the movement of the first piston 12, and further eliminate the flow pulse at the discharge pipe 3.

[0070] Reference Figures 3-5 Specifically, the first drive group 17 includes a first drive member 171 and a lead screw 172;

[0071] The lead screw 172 is threadedly connected to the piston rod connecting block 152; the first driving member 171 drives the lead screw 172 to rotate, so as to drive the piston rod connecting block 152 to slide on the first slide rail 16 and the first piston 12 to slide inside the first housing 11.

[0072] The first driving component 171 drives the lead screw 172 to rotate, which can control the movement of the piston rod connecting block 152 with high precision and accurately control the movement of the first piston 12. The setting of the piston rod connecting block 152 optimizes the spatial layout of the system. The first driving component 171 and the lead screw 172 can be set on one side of the first housing 11, and the lead screw 172 is parallel to the central axis of the first housing 11 and parallel to the first slide rail 16, making the spatial layout of the system more compact and saving space.

[0073] Specifically, the piston rod connecting block 152 is fixedly connected to a lead screw nut, and the lead screw 172 rotates, thereby driving the piston rod connecting block 152 to move.

[0074] Reference Figures 3-5 More specifically, it also includes a piston rod fixing seat 182 and a second slide rail 19; the first piston 12 is fixed on the first piston rod 151, part of the first piston rod 151 is located in the first right cavity 14, and the other part of the first piston rod 151 extends out of the first right cavity 14 and is fixedly connected to the piston rod fixing seat 182, and the piston rod fixing seat 182 slides on the second slide rail 19.

[0075] The second slide rail 19 and the piston rod fixing seat 182 help to further stabilize the position of the first piston 12 in the first housing 11, reduce the position change of the first piston 12 caused by mechanical vibration, and reduce the impact on the control of slurry flow.

[0076] The piston rod fixing seat 182 can serve as a support for the other end of the first piston rod 151, further stabilizing the position of the first piston 12 within the first housing 11 and improving the stability of slurry control.

[0077] Reference Figure 1 In one embodiment, the feed pipe 3 includes a main feed pipe 31, a first feed branch pipe 32 connected to the main feed pipe 31 and the first pump group 1, and a second feed branch pipe 33 connected to the main feed pipe 31 and the second pump group 2.

[0078] The first feed branch pipe 32 is provided with a first one-way valve 321, which is used to prevent the liquid in the first feed branch pipe 32 from flowing back into the feed main pipe 31.

[0079] The second feed branch pipe 33 is provided with a second one-way valve 331, which is used to prevent the liquid in the second feed branch pipe 33 from flowing back into the feed main pipe 31.

[0080] In one embodiment, the discharge pipe 4 includes a main discharge pipe 41, a first discharge branch pipe 42 connected to the main discharge pipe 41 and the first pump group 1, and a second discharge branch pipe 43 connected to the main discharge pipe 41 and the second pump group 2.

[0081] Reference Figure 2 , Figure 3 In one embodiment, the system further includes a frame 5 on which the first pump group 1, the second pump group 2, the inlet pipe 3, and the outlet pipe 4 are mounted. A moving device 6 is provided at the bottom of the frame 5. The moving device 6 allows the user to move the system to a location where slurry needs to be replenished, such as a coating device, as required.

[0082] As an example, the moving device 6 is a wheel.

[0083] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A feeding system, characterized in that, It includes a first pump group (1), a second pump group (2), an inlet pipe (3), and an outlet pipe (4); The feed pipe (3) is connected to the feed inlets of the first pump group (1) and the second pump group (2); The discharge pipe (4) is connected to the discharge ports of the first pump group (1) and the second pump group (2); The discharge flow rates of the first pump group (1) and the second pump group (2) compensate each other.

2. The feeding system as described in claim 1, characterized in that: The first pump assembly (1) includes a first housing (11) and a first piston (12). The first piston (12) is slidably disposed in the first housing (11). The first housing (11) is divided into a first left chamber (13) and a first right chamber (14) with the first piston (12) as the boundary. The first left cavity (13) is provided with a first left discharge port (131) and a first left inlet port (132); The first right cavity (14) is provided with a first right discharge port (141) and a first right inlet port (142); The second pump assembly (2) includes a second housing (21) and a second piston (22). The second piston (22) is slidably disposed in the second housing (21). The second housing (21) is divided into a second left chamber (23) and a second right chamber (24) with the second piston (22) as the boundary. The second left cavity (23) is provided with a second left discharge port (231) and a second left inlet port (232); The second right cavity (24) is provided with a second right discharge port (241) and a second right inlet port (242); The first left inlet (132), the first right inlet (142), the second left inlet (232), the second right inlet (242), the first left outlet (131), the first right outlet (141), the second left outlet (231), and the second right outlet (241) are all unidirectional outlets.

3. The feeding system as described in claim 2, characterized in that: The opening and closing states of the first left discharge port (131) and the first left inlet port (132) are opposite, the opening and closing states of the first right discharge port (141) and the first right inlet port (142) are opposite, and the opening and closing states of the first left discharge port (131) and the first right inlet port (142) are the same. The second left discharge port (231) has the opposite opening and closing state to the second left inlet port (232), the second right discharge port (241) has the opposite opening and closing state to the second right inlet port (242), and the second left discharge port (231) has the same opening and closing state as the second right inlet port (242).

4. The feeding system as described in claim 2, characterized in that: It also includes a frame (5), and the first pump group (1) and the second pump group (2) have the same structure; The first housing (11) is fixed to the frame (5); The first pump assembly (1) also includes a first piston rod (151), a piston rod connecting block (152), a first slide rail (16), and a first drive assembly (17); One end of the first piston rod (151) is fixedly connected to the first piston (12), and part of the first piston rod (151) is located in the first left cavity (13), while the other part extends out of the first left cavity (13) and is fixedly connected to the piston rod connecting block (152); the piston rod connecting block (152) slides on the first slide rail (16); The first drive group (17) is mounted on the frame (5), and the output end of the first drive group (17) is connected to the first piston rod (151); The first drive group (17) drives the piston rod connecting block (152) to slide on the first slide rail (16), and drives the first piston rod (151) and the first piston (12) to slide inside the first housing (11).

5. The feeding system as described in claim 4, characterized in that: The first drive group (17) includes a first drive member (171) and a lead screw (172); The lead screw (172) is threadedly connected to the piston rod connecting block (152); the first driving member (171) drives the lead screw (172) to rotate, so as to drive the piston rod connecting block (152) to slide on the first slide rail (16) and the first piston (12) to slide inside the first housing (11).

6. The feeding system as described in claim 5, characterized in that: It also includes a piston rod fixing seat (182) and a second slide rail (19); the first piston (12) is fixed on the first piston rod (151), part of the first piston rod (151) is located in the first right cavity (14), and the other part of the first piston rod (151) extends out of the first right cavity (14) and is fixedly connected to the piston rod fixing seat (182), and the piston rod fixing seat (182) slides on the second slide rail (19).

7. The feeding system as described in claim 1, characterized in that: The feed pipe (3) includes a main feed pipe (31), a first feed branch pipe (32) connected to the main feed pipe (31) and the first pump group (1), and a second feed branch pipe (33) connected to the main feed pipe (31) and the second pump group (2); The first feed branch pipe (32) is provided with a first check valve (321), which is used to prevent the liquid in the first feed branch pipe (32) from flowing back into the feed main pipe (31); The second feed branch pipe (33) is provided with a second check valve (331), which is used to prevent the liquid in the second feed branch pipe (33) from flowing back into the feed main pipe (31).

8. The feeding system as described in claim 1, characterized in that: The discharge pipe (4) includes a discharge main pipe (41), a first discharge branch pipe (42) connected to the discharge main pipe (41) and the first pump group (1), and a second discharge branch pipe (43) connected to the discharge main pipe (41) and the second pump group (2).

9. The feeding system as described in claim 1, characterized in that: It also includes a frame (5), on which the first pump group (1), the second pump group (2), the feed pipe (3) and the discharge pipe (4) are installed, and a moving device (6) is provided at the bottom of the frame (5).

10. The feeding system as described in claim 9, characterized in that: The mobile device (6) is a wheel.

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