High-liquidity fluid delivery pump

Abstract

The utility model belongs to the technical field of pumps, and particularly discloses a high-liquidity fluid delivery pump which comprises a driving device, a gear box, a main pump box and a piston rod, a pump cavity is arranged in the main pump box, a first discharging pipe is arranged at the front end of the pump cavity, a first check valve is installed in the first discharging pipe, a second discharging pipe is arranged at the rear end of the pump cavity, and a second check valve is installed in the second discharging pipe. A second check valve is mounted in the second discharge pipe; a piston is connected in the pump cavity in a front-back sliding mode, the piston rod is fixedly connected to the piston and penetrates through the main pump box to stretch into the gearbox, a cam and a transmission rod are rotationally connected in the gearbox, the output end of the cam is located on the outer side of a rotating shaft of the cam, the driving device is in driving connection to the cam, and the front end of the transmission rod is hinged to the piston rod. The rear end of the transmission rod is hinged to the output end of the cam, the piston rod moves front and back, positive pressure or negative pressure is generated in the front and back of the pump cavity, telescopic double-stroke multi-pipeline conveying is achieved, the pumping efficiency is high, and the double-stroke multi-pipeline pump can be suitable for conveying high-viscosity materials and particle-containing materials.

Description

Technical Field

[0001] The utility model belongs to the technical field of pump machines, and in particular relates to a high-flowability fluid delivery pump. Background Art

[0002] There are very few types of particle pumps that can be used in the food and drug industry, mainly screw pumps, diaphragm pumps, sine pumps, spiral pumps, rotor pumps, etc. Among them, screw pumps and rotor pumps are more destructive to particles; diaphragm pumps are pneumatically conveyed, and the diaphragm is easy to break, causing food and drug pollution, pneumatic waste of energy. And it is impossible to accurately adjust the conveying volume; the slider of the sine pump is very easy to wear; the spiral pump is less broken, the pressure is high, but the price is relatively high. Utility Model Content

[0003] In view of the problem that there are few types of particle pumps in the prior art and it is difficult to use them for efficient transportation of highly viscous materials and materials containing particles, a high-flowability fluid transportation pump is proposed. The utility model provides the following technical solutions:

[0004] A high-flowability fluid delivery pump comprises a driving device, a gear box, a main pump box and a piston rod, wherein a pump chamber is arranged in the main pump box, a first discharge pipe is arranged at the front end of the pump chamber, a first check valve is installed in the first discharge pipe, a second discharge pipe is arranged at the rear end of the pump chamber, a second check valve is installed in the second discharge pipe, and an output pipe is connected in parallel with the first discharge pipe and the second discharge pipe; a piston is connected in a forward and backward sliding manner in the pump chamber, a piston rod is fixedly connected to the piston and extends into the gear box after passing through the main pump box, a cam and a transmission rod are rotatably connected in the gear box, the output end of the cam is located outside the rotating shaft of the cam, the driving device is drivingly connected to the cam, the front end of the transmission rod is hinged to the piston rod, and the rear end of the transmission rod is hinged to the output end of the cam.

[0005] Preferably, a first discharge pipe is provided on both sides of the front end of the pump chamber, and a second discharge pipe is provided on both sides of the rear end of the pump chamber, and the first discharge pipe and the second discharge pipe located on the same side of the pump chamber are connected in parallel.

[0006] Preferably, a buffer box is connected between the driving device and the gear box, and the piston rod includes a first shaft and a second shaft, the first shaft and the second shaft are connected through a floating joint, the first shaft is connected to the piston, and the second shaft is connected to the transmission rod.

[0007] Preferably, the buffer box is provided with a feed port for inputting the sterilizing agent and a discharge port for discharging the sterilizing agent.

[0008] Preferably, a sealing ring is provided in the pump chamber, and the piston rod is slidably connected to the sealing ring.

[0009] Preferably, two pump chambers are arranged side by side, a piston rod is arranged in each pump chamber, and each piston rod is connected and driven by a separate cam and a transmission rod.

[0010] Preferably, the driving device is simultaneously transmission-connected to the cams on both sides, the rotation directions of the cams on both sides are opposite, and the cams on both sides are symmetrically arranged with respect to the vertical plane.

[0011] Preferably, the driving device is simultaneously transmission-connected to the cams on both sides, the rotation directions of the cams on both sides are the same, and the cams on both sides are centrally symmetrically arranged.

[0012] Preferably, the lower side of the gear box is fixedly connected to a frame.

[0013] Preferably, the driving device is an electric motor.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The cam can drive the transmission rod, and then drive the piston rod to move forward and backward, so that positive pressure or negative pressure is generated in the front and back of the pump chamber, so that the first check valve or the second check valve is opened and closed, and telescopic two-way multi-pipeline transportation is realized. The pumping efficiency is high and it can be applied to the transportation of highly viscous materials and materials containing particles;

[0016] 2. A buffer box is connected between the driving device and the gear box. The buffer box is provided with a feed port for inputting a sterilant and a discharge port for discharging the sterilant. The first shaft can be sterilized by inputting steam or other sterilants to be suitable for aseptic transportation related to food and medicine;

[0017] 3. Two pump chambers are arranged side by side, each pump chamber is provided with a piston rod, and each piston rod is connected and driven by a separate cam and transmission rod, which can improve the pumping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a right view structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0020] In the accompanying drawings, 1. driving device; 2. gear box; 3. main pump box; 31. pump chamber; 4. buffer box; 41. feed port; 42. discharge port; 5. cam; 6. transmission rod; 7. piston rod; 71. first shaft body; 72. second shaft body; 8. bearing; 9. floating joint; 10. sealing ring; 11. piston; 12. first check valve; 13. second check valve. DETAILED DESCRIPTION

[0021] The directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention of the utility model.

[0022] like Figure 1 and Figure 2 As shown, a high-flow fluid delivery pump comprises a driving device 1, a gear box 2, a main pump box 3 and a piston rod 7, wherein a pump chamber 31 is arranged in the main pump box 3, a first discharge pipe is arranged at the front end of the pump chamber 31, a first check valve 12 is installed in the first discharge pipe, a second discharge pipe is arranged at the rear end of the pump chamber 31, a second check valve 13 is installed in the second discharge pipe, an output pipe is connected in parallel with the first discharge pipe; a piston 11 is slidably connected in front and back in the pump chamber 31, a piston rod 7 is fixedly connected to the piston 11 and extends into the gear box 2 after passing through the main pump box 3, and the gear box 2 is provided with a second discharge pipe at the rear end of the pump chamber 31, a second check valve 13 is installed in the second discharge pipe, and an output pipe is connected in parallel with the first discharge pipe; a piston 11 is slidably connected in front and back in the pump chamber 31, a piston rod 7 is fixedly connected to the piston 11 and extends into the gear box 2 after passing through the main pump box 3, and the gear box 2 is provided with a second discharge pipe at the rear end of the pump chamber 31, and a second check valve 13 is installed in the second discharge pipe, and an output pipe is connected in parallel with the first discharge pipe and the second discharge pipe; A cam 5 and a transmission rod 6 are rotatably connected in the wheel box 2, and the output end of the cam 5 is located outside the rotating shaft of the cam 5. The driving device 1 is drivingly connected to the cam 5, and the front end of the transmission rod 6 is hinged to the piston rod 7, and the rear end of the transmission rod 6 is hinged to the output end of the cam 5. The transmission rod 6 can be driven by the cam 5, and then the piston rod 7 can be driven to move forward and backward, so that positive pressure or negative pressure is generated in the front and back of the pump chamber 31, so that the first check valve 12 or the second check valve 13 is opened and closed, realizing telescopic two-way multi-pipeline transportation, with high pumping efficiency, and can be suitable for the transportation of highly viscous materials and materials containing particles.

[0023] Furthermore, a first discharge pipe is provided on both sides of the front end of the pump chamber 31, and a second discharge pipe is provided on both sides of the rear end of the pump chamber 31. The first discharge pipe and the second discharge pipe located on the same side of the pump chamber 31 are connected in parallel to each other, which can reduce space occupancy.

[0024] Furthermore, a buffer box 4 is connected between the driving device 1 and the gear box 2, and the piston rod 7 includes a first shaft body 71 and a second shaft body 72, which are connected by a floating joint 9, the first shaft body 71 is connected to the piston 11, and the second shaft body 72 is connected to the transmission rod 6. A bearing 8 is fixedly installed in the gear box 2, and the second shaft body 72 is inserted into the bearing 8.

[0025] Furthermore, the buffer box 4 is provided with a feed port 41 for inputting sterilant and a discharge port 42 for discharging sterilant, and the first shaft 71 can be sterilized by inputting steam or other sterilants to be suitable for aseptic transportation of food and medicine.

[0026] Furthermore, a sealing ring 10 is provided in the pump chamber 31 , and the piston rod 7 is slidably connected to the sealing ring 10 , which can improve the sealing performance of the main pump box 3 .

[0027] Furthermore, two pump chambers 31 are arranged side by side, each pump chamber 31 is provided with a piston rod 7, and each piston rod 7 is connected and driven by a separate cam 5 and a transmission rod 6, which can improve the pumping efficiency.

[0028] Furthermore, the drive device 1 is simultaneously connected to the cams 5 on both sides, and the cams 5 on both sides are symmetrically arranged with respect to the vertical plane. The cams 5 on both sides can be meshed and driven by gears at the same time, so that the rotation directions of the cams 5 on both sides are opposite, thereby ensuring that the piston rods 7 on both sides extend on one side and retract on the other side, that is, the movements on both sides are opposite, realizing single-drive double-row movement, so as to improve the utilization rate of the drive device 1.

[0029] Furthermore, the lower side of the gear box 2 is fixedly connected to a frame to improve overall stability.

[0030] Furthermore, the driving device 1 adopts an electric motor, and the material conveying speed can be adjusted by adjusting the motor speed; the pumping pressure can be adjusted by adjusting the speed ratio of the gear box 2 or replacing electric motors with different torques; it can be used instead of a diaphragm pump in a scenario without an air source, effectively reducing the energy waste of the diaphragm pump and achieving low carbon and environmental protection.

[0031] The working principle of the utility model is that the piston rod 7 and the piston 11 are driven to move forward and backward through the cam 5 and the transmission rod 6, so that negative pressure is generated on one side and the other side of the front and rear sides of the piston 11, and the first check valve 12 and the second check valve 13 are installed in the same posture, so the first check valve 12 on the upper front side and the second check valve 13 on the lower rear side will be opened or closed at the same time, while the first check valve 12 on the lower front side and the second check valve 13 on the upper rear side will be opened or closed at the same time, and the first check valve 12 on the lower front side and the second check valve 13 on the upper rear side will be opened or closed at the same time, and the two processes of extension and contraction can be transported through multiple pipelines, and the transportation efficiency is high.

[0032] Example 2

[0033] The difference from specific embodiment 1 is that the driving device 1 is simultaneously connected to the cams 5 on both sides, the rotation directions of the cams 5 on both sides are the same, and the cams 5 on both sides are symmetrically arranged, so that the protruding parts of the cams 5 can also ensure that the piston rods 7 on both sides extend on one side and retract on the other side, that is, the movements on both sides are opposite, realizing single-drive double-row movement, so as to improve the utilization of the driving device 1.

Claims

1. A high-flowability fluid delivery pump, characterized in that: The invention comprises a driving device (1), a gear box (2), a main pump box (3) and a piston rod (7); a pump chamber (31) is provided in the main pump box (3); a first discharge pipe is provided at the front end of the pump chamber (31); a first check valve (12) is installed in the first discharge pipe; a second discharge pipe is provided at the rear end of the pump chamber (31); a second check valve (13) is installed in the second discharge pipe; an output pipe is connected in parallel with the first discharge pipe; a piston (11) is slidably connected in the pump chamber (31); the piston rod (7) is fixedly connected to the piston (11) and extends into the gear box (2) after passing through the main pump box (3); a cam (5) and a transmission rod (6) are rotatably connected in the gear box (2); an output end of the cam (5) is located outside a rotation axis of the cam (5); the driving device (1) is drivingly connected to the cam (5); a front end of the transmission rod (6) is hinged to the piston rod (7); and a rear end of the transmission rod (6) is hinged to the output end of the cam (5).

2. The high-flowability fluid delivery pump according to claim 1, characterized in that: A first discharge pipe is provided on both sides of the front end of the pump chamber (31), and a second discharge pipe is provided on both sides of the rear end of the pump chamber (31). The first discharge pipe and the second discharge pipe located on the same side of the pump chamber (31) are connected in parallel.

3. The high-flowability fluid delivery pump according to claim 1 or 2, characterized in that: A buffer box (4) is connected between the drive device (1) and the gear box (2); the piston rod (7) comprises a first shaft body (71) and a second shaft body (72); the first shaft body (71) and the second shaft body (72) are connected via a floating joint (9); the first shaft body (71) is connected to the piston (11), and the second shaft body (72) is connected to the transmission rod (6).

4. The high-flowability fluid delivery pump according to claim 3, characterized in that: The buffer box (4) is provided with a feed port (41) for inputting the sterilizing agent and a discharge port (42) for discharging the sterilizing agent.

5. The high-flowability fluid delivery pump according to claim 1 or 2, characterized in that: A sealing ring (10) is provided in the pump chamber (31), and the piston rod (7) is slidably connected to the sealing ring (10).

6. The high-flowability fluid delivery pump according to claim 5, characterized in that: Two pump chambers (31) are arranged side by side, each pump chamber (31) is provided with a piston rod (7), and each piston rod (7) is connected and driven via a separate cam (5) and a transmission rod (6).

7. The high-flowability fluid delivery pump according to claim 6, characterized in that: The driving device (1) is simultaneously transmission-connected to the cams (5) on both sides, the rotation directions of the cams (5) on both sides are opposite, and the cams (5) on both sides are symmetrically arranged with respect to a vertical plane.

8. The high-flowability fluid delivery pump according to claim 6, characterized in that: The driving device (1) is simultaneously transmission-connected to the cams (5) on both sides, the rotation directions of the cams (5) on both sides are the same, and the cams (5) on both sides are centrally symmetrically arranged.

9. The high-flowability fluid delivery pump according to claim 1, characterized in that: The lower side of the gear box (2) is fixedly connected to a frame.

10. The high-flowability fluid delivery pump according to claim 1, characterized in that: The driving device (1) adopts an electric motor.

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