A four-fluorine corrugated tube pump

Abstract

The utility model discloses a kind of tetrafluoro corrugated pipe pumps, it is related to the field of corrugated pipe pump, including the pump body of being installed in support, and the pump cover being connected with pump body, the tetrafluoro corrugated pipe pump is also equipped with ball screw flange, guide rail and screw rod, the guide rail is located on support, the upper end of the pump cover is connected with ball screw flange through connecting piece, ball screw flange both sides are equipped with pull plate, the outer edge of pull plate is connected with the guide rail on support, and vertically moves along the guide rail, ball screw flange is connected with screw rod, and vertically moves along the screw rod, pump body is pulled by pull plate connected by screw rod and ball screw flange, it is convenient for pump body to be telescopic, and will not cause corrugated pipe pump to be destroyed.

Description

Technical Field

[0001] This utility model relates to the field of bellows pumps, and more particularly to a PTFE bellows pump. Background Technology

[0002] Existing bellows pumps utilize the stretching and contraction of the bellows to change the volume of the pump chamber, thereby achieving liquid pumping and transportation. The bellows is the component with the heaviest workload and is also the most prone to damage. During the expansion and contraction of the bellows, its sides will undergo concave deformation due to the working pressure and the asymmetry of the bellows' manufacturing process, accompanied by stress concentration, all of which accelerate the damage of the bellows.

[0003] As disclosed in documents CN105971860A and CN103477074A, to increase the lifespan of bellows, current methods mainly involve changing the bellows shape, increasing the bellows sidewall thickness, or adding a reinforcing ring in the middle of the bellows to improve the pressure resistance of the bellows and thus suppress undesirable deformation. However, increasing the bellows wall thickness to improve strength, as mentioned above, would increase the resistance of the telescopic bellows, thus affecting the pump efficiency. Alternatively, adding a reinforcing ring in the middle of the bellows, as mentioned above, would increase the manufacturing cost of the bellows and also increase its axial dimension, thereby increasing the overall pump size and making the compression of the pump more difficult. Summary of the Invention

[0004] In view of the above-mentioned shortcomings in the current field of bellows pumps, this utility model provides a PTFE bellows pump that allows the pump body to extend and retract easily without causing damage to the bellows pump.

[0005] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0006] A PTFE bellows pump includes a pump body installed in a bracket and a pump cover connected to the pump body. The PTFE bellows pump also includes a ball screw flange, a guide rail, and a screw. The guide rail is located on the bracket. The upper end of the pump cover is connected to the ball screw flange through a connector. Pull plates are installed on both sides of the ball screw flange. The outer edge of the pull plate is connected to the guide rail on the bracket and moves vertically along the guide rail. The ball screw flange is connected to the screw and moves vertically along the screw.

[0007] According to one aspect of the present invention, the upper end of the lead screw is connected to a coupling, and the coupling is connected to a drive motor.

[0008] According to one aspect of the present invention, the bracket includes a cover plate at the upper end and an upright plate for support, the cover plate being connected to the upright plate by a first limiting bolt.

[0009] According to one aspect of this utility model, the guide rail is located at the front end of the upright plate, and the guide rail and the pull plate are provided with corresponding holes.

[0010] According to one aspect of the present invention, a motor bracket is connected above the cover plate, and the motor bracket is connected to a drive motor.

[0011] According to one aspect of the present invention, a photoelectric sensor is further provided at the front end of the upright plate, and the photoelectric sensor is used to record the position of the pull plate.

[0012] According to one aspect of the present invention, an oil pan is connected to the lower end of the bracket, and the bottom of the pump body is connected to the oil pan by a second limiting bolt.

[0013] According to one aspect of this utility model, the oil pan is provided with sensor mounting holes.

[0014] According to one aspect of the present invention, the pump cover is further provided with a liquid valve, which controls the inflow and outflow of liquid.

[0015] According to one aspect of the present invention, the liquid valve includes an inlet check valve and a drain check valve.

[0016] The advantages of this utility model are as follows: It includes a pump body installed in a bracket and a pump cover connected to the pump body. The upper end of the pump cover is connected to a ball screw flange through a connector. Pull plates are installed on both sides of the ball screw flange. The outer edge of the pull plate is connected to a guide rail on the bracket and moves vertically along the guide rail. The ball screw flange is connected to a screw and moves vertically along the screw. The pump body is pulled by the pull plates connected to the screw and the ball screw flange, which facilitates the extension and retraction of the pump body and does not damage the bellows pump. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a side sectional view of a PTFE bellows pump according to the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of a PTFE bellows pump according to the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Pump body; 2. Pump cover; 3. Ball screw flange; 4. Pull plate; 5. Guide rail; 6. Screw; 7. Coupling; 8. Cover plate; 9. Vertical plate; 10. First limit bolt; 11. Motor bracket; 12. Photoelectric sensor; 13. Oil pan; 14. Second limit bolt; 15. Sensor mounting hole; 16. Inlet check valve; 17. Drain check valve. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1:

[0024] A PTFE bellows pump includes a support frame and a pump body 1. The pump body 1 is constructed of PTFE bellows. The support frame includes a cover plate 8 and upright plates 9. The overall length, width, and height of the support frame are 200mm, 125mm, and 400mm, respectively, and the weight is 6.7kg. Three upright plates 9 are connected to the cover plate 8 by upper limit bolts 10. A motor bracket 11 is also provided on the cover plate 8, which connects to and supports the drive motor. A guide rail 5 is provided on the side of the upright plate 9 opposite to the pump body 1. Multiple photoelectric sensors 12 are also provided on the outer side of the upright plate 9. An oil pan 13 is also provided at the bottom of the support frame. The oil pan 13 is connected to the lower end of the pump body 1 by a lower limit bolt 14. Sensor mounting holes 15 are also provided inside the oil pan 13. The pump body 1 has a pump cover 2 at its upper end, which is made of stainless steel. The pump cover 2 is equipped with an inlet check valve 16 and a drain check valve 17. Liquid enters the pump body through the inlet check valve 16 and exits through the drain check valve 17. The pump body 1 has a discharge capacity of 100 mL. The top of the pump cover 2 is fixedly connected to the ball screw flange 3 via a connector. Pull plates 4 are connected to both sides of the ball screw flange 3. The outer edge of the pull plates 4 is connected to the guide rail 5, and holes are provided at corresponding positions. The pull plates 4 can move vertically along the guide rail 5, and their position is recorded by a photoelectric sensor 12. A screw 6 is connected to the middle of the ball screw flange 3. The lower end of the screw 6 is connected to the connector, and the upper end of the screw 6 is connected to a coupling 7. The coupling 7 is located inside the motor bracket 11, and its upper end is connected to the drive motor. The drive motor is model HG-MR13B. When the drive motor is running, the acceleration time of the control screw 6 is 0.15s, the constant speed time is 12s, and the deceleration time is 0.15s. The maximum extension and retraction speed of the screw is 3.75mm / s, and the maximum speed is 56.25rpm / min.

[0025] When the drive motor starts working, it drives the lead screw 6 to rotate, thereby causing the ball screw flange 3 to move vertically along the lead screw 6. The pull plate 4, connected to the ball screw flange 3, is guided by the guide rail 5 and drives the pump body 1 to reciprocate axially. The volume of the pump body 1 repeatedly expands and compresses during the reciprocating motion, thereby drawing in and discharging liquid through pressure. The flow direction of the drawn and discharged liquid is controlled by the inlet check valve 16 and the outlet check valve 17.

[0026] The advantages of this utility model are as follows: It includes a pump body installed in a bracket and a pump cover connected to the pump body. The upper end of the pump cover is connected to a ball screw flange through a connector. Pull plates are installed on both sides of the ball screw flange. The outer edge of the pull plate is connected to a guide rail on the bracket and moves vertically along the guide rail. The ball screw flange is connected to a screw and moves vertically along the screw. The pump body is pulled by the pull plates connected to the screw and the ball screw flange, which facilitates the extension and retraction of the pump body and does not damage the bellows pump.

[0027] Example 2:

[0028] A PTFE bellows pump includes a support and a pump body 1. The pump body 1 is constructed of PTFE bellows. The support includes a cover plate 8 and upright plates 9. The overall length, width, and height of the support are 200mm, 125mm, and 400mm, respectively, and the weight is 6.7kg. Three upright plates 9 are connected to the cover plate 8 by upper limit bolts 10. A motor bracket 11 is also provided on the cover plate 8, which connects to and supports the drive motor. A guide rail 5 is provided on the side of the upright plate 9 opposite to the pump body 1. Multiple photoelectric sensors 12 are also provided on the outer side of the upright plate 9. An oil pan 13 is provided at the bottom of the support. The oil pan 13 is connected to the lower end of the pump body 1 by a lower limit bolt 14. Sensor mounting holes 15 are provided inside the oil pan 13. A pump cover 2 is provided at the upper end of the pump body 1. The pump cover 2 is made of stainless steel and has a single liquid valve. Liquid enters the pump body through the liquid valve and is discharged from the pump body under pressure. The pump body 1 has a discharge capacity of 100mL. The top of the pump cover 2 is fixedly connected to the ball screw flange 3 via a connector. Pull plates 4 are connected to both sides of the ball screw flange 3. The outer edge of the pull plates 4 is connected to the guide rail 5, and holes are provided at corresponding positions. The pull plates 4 can move vertically along the guide rail 5, and their position is recorded by a photoelectric sensor 12. A screw 6 is connected in the middle of the ball screw flange 3. The lower end of the screw 6 is connected to the connector, and the upper end of the screw 6 is connected to a coupling 7. The coupling 7 is located inside the motor bracket 11, and its upper end is connected to the drive motor. The drive motor is model HG-MR13B. When the drive motor is running, the acceleration time of the screw 6 is controlled to be 0.15s, the constant speed time to be 12s, and the deceleration time to be 0.15s. The maximum extension / retraction speed of the screw is 3.75mm / s, and the maximum rotational speed is 56.25rpm / min.

[0029] When the drive motor starts working, it drives the lead screw 6 to rotate, thereby causing the ball screw flange 3 to move vertically along the lead screw 6. The pull plate 4, connected to the ball screw flange 3, is guided by the guide rail 5 and drives the pump body 1 to reciprocate axially. The volume of the pump body 1 repeatedly expands and compresses during the reciprocating motion, thereby drawing in and discharging liquid through pressure. The flow direction of the drawn and discharged liquid is controlled by the liquid valve.

[0030] The advantages of this utility model are as follows: It includes a pump body installed in a bracket and a pump cover connected to the pump body. The upper end of the pump cover is connected to a ball screw flange through a connector. Pull plates are installed on both sides of the ball screw flange. The outer edge of the pull plate is connected to a guide rail on the bracket and moves vertically along the guide rail. The ball screw flange is connected to a screw and moves vertically along the screw. The pump body is pulled by the pull plates connected to the screw and the ball screw flange, which facilitates the extension and retraction of the pump body and does not damage the bellows pump.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A PTFE bellows pump, comprising a pump body (1) mounted in a bracket, and a pump cover (2) connected to the pump body (1), characterized in that, The PTFE bellows pump is also equipped with a ball screw flange (3), a guide rail (5) and a screw (6). The guide rail (5) is located on the bracket. The upper end of the pump cover (2) is connected to the ball screw flange (3) through a connector. Pull plates (4) are installed on both sides of the ball screw flange (3). The outer edge of the pull plate (4) is connected to the guide rail (5) on the bracket and moves vertically along the guide rail (5). The ball screw flange (3) is connected to the screw (6) and moves vertically along the screw (6).

2. The PTFE bellows pump according to claim 1, characterized in that, The upper end of the lead screw (6) is connected to a coupling (7), which is connected to a drive motor.

3. The PTFE bellows pump according to claim 1, characterized in that, The bracket includes a cover plate (8) at the upper end and a vertical plate (9) for support, the cover plate (8) being connected to the vertical plate (9) by a first limiting bolt (10).

4. The PTFE bellows pump according to claim 3, characterized in that, The guide rail (5) is located at the front end of the upright plate (9), and the guide rail (5) and the pull plate (4) are provided with corresponding holes.

5. The PTFE bellows pump according to claim 3, characterized in that, A motor bracket (11) is connected above the cover plate (8), and the motor bracket (11) is connected to the drive motor.

6. The PTFE bellows pump according to claim 3, characterized in that, The front end of the upright plate (9) is also provided with a photoelectric sensor (12), which is used to record the position of the pull plate (4).

7. The PTFE bellows pump according to claim 1, characterized in that, The lower end of the bracket is connected to an oil pan (13), and the bottom of the pump body (1) is connected to the oil pan (13) through a second limiting bolt (14).

8. The PTFE bellows pump according to claim 7, characterized in that, The oil pan (13) has a sensor mounting hole (15) inside.

9. The PTFE bellows pump according to any one of claims 1 to 8, characterized in that, The pump cover (2) is also provided with a liquid valve, which controls the inflow and outflow of liquid.

10. The PTFE bellows pump according to claim 9, characterized in that, The liquid valves include an inlet check valve (16) and a drain check valve (17).

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