Creeping wheel for filling pump

Abstract

The utility model relates to a peristaltic wheel for a filling pump, which belongs to the technical field of medical instruments and comprises a first turntable, a second turntable, a plurality of fixing rods, a plurality of rolling sleeves, bolts and screw sleeves, the first turntable and the second turntable are oppositely arranged at intervals, and a plurality of first holes are formed in the first turntable; a plurality of second holes are formed in the second turntable; the two ends of the multiple fixing rods are detachably inserted into the multiple first holes and the multiple second holes which are opposite to each other respectively; the multiple rolling sleeves are connected to the peripheral sides of the multiple fixing rods in a sleeving mode correspondingly. According to the utility model, the plurality of first holes are divided into at least two circles along the radial direction of the first turntable, and then the plurality of second holes are divided into at least two circles along the radial direction of the second turntable, so that the fixing positions of the plurality of fixing rods and the plurality of rolling sleeves relative to the radial directions of the first turntable and the second turntable can be changed; and the purpose of modifying the perfusion flow is achieved by adapting to different pipeline lengths or pipe diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a peristaltic wheel for a perfusion pump. Background Art

[0002] Medical perfusion pumps all use a peristaltic wheel structure. During rotation, the peristaltic wheel structure squeezes a liquid pipe to pump the fluid inside the liquid pipe.

[0003] However, existing peristaltic wheels usually can only provide adaptation for one pipe length or pipe diameter. For applications with different flow rates, the flow rate can only be changed by modifying the motor speed. When the motor speed is lower than a certain level, resonance or out-of-step phenomena will occur.

[0004] Therefore, how to design a peristaltic wheel for a perfusion pump that can change the perfusion flow rate without changing the rotation speed is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] The utility model provides a peristaltic wheel for a perfusion pump, which solves the technical problems of resonance or out-of-step during low-speed rotation of the existing peristaltic wheel and the inability to adapt to multiple pipe lengths or pipe diameters.

[0006] The technical solution for the utility model to solve the above technical problems is as follows. A peristaltic wheel for a perfusion pump includes: a first turntable, a second turntable, a plurality of fixing rods, a plurality of rolling sleeves, a bolt and a nut sleeve.

[0007] The first turntable and the second turntable are arranged opposite to each other at intervals. The disk surface of the first turntable is provided with a plurality of first holes, and the plurality of first holes are radially divided into at least two circles along the first turntable; the disk surface of the second turntable is provided with a plurality of second holes, and the plurality of second holes are radially divided into at least two circles along the second turntable. A fixing hole is provided in the middle of the second turntable; the plurality of first holes in each circle are respectively arranged opposite to the plurality of second holes in each circle; the plurality of fixing rods and the plurality of rolling sleeves are all arranged along the perpendicular direction of the first turntable and the second turntable. Two ends of the plurality of fixing rods are respectively detachably inserted into the plurality of first holes and the plurality of second holes in the opposite circles; the plurality of rolling sleeves are respectively detachably sleeved on the outer peripheral sides of the plurality of fixing rods and can rotate along the axial direction of the corresponding fixing rods; the bolt and the nut sleeve are both arranged along the perpendicular direction, and the nut end of the bolt is fixed in the middle of the disk surface of the first turntable close to the second turntable. A shaft hole for connecting the output shaft of the perfusion pump is provided inside the bolt; the nut sleeve is inserted into the fixing hole and is threadedly connected to the screw rod of the bolt.

[0008] The beneficial effects of the present utility model are as follows: By respectively designing a plurality of first holes and a plurality of second holes on the first turntable and the second turntable, since the plurality of first holes are radially divided into at least two circles along the first turntable, and since the plurality of second holes are radially divided into at least two circles along the second turntable, when it is necessary to adapt to a long pipe or a thick pipe, the two ends of the plurality of fixing rods can be respectively fixed in the plurality of first holes and the plurality of second holes of the relative circles close to the outer edges of the first turntable and the second turntable, so that the plurality of rolling sleeves (the long pipe or thick pipe of the perfusion pump is wound around the outer peripheral sides of the plurality of rolling sleeves) are arranged close to the outer edges of the first turntable and the second turntable; when it is necessary to adapt to a short pipe or a thin pipe, the two ends of the plurality of fixing rods can be respectively fixed in the plurality of first holes and the plurality of second holes of the relative circles close to the centers of the first turntable and the second turntable, so that the plurality of rolling sleeves (the long pipe or thick pipe of the perfusion pump is wound around the outer peripheral sides of the plurality of rolling sleeves) are arranged close to the centers of the first turntable and the second turntable; thus, without changing the rotation speed, by adapting to different pipe lengths or pipe diameters, the purpose of modifying the perfusion flow rate can be achieved.

[0009] On the basis of the above technical solution, the present utility model can also be improved as follows.

[0010] Further, it further includes a sleeve and a pin. A pin hole communicating with the shaft hole is provided on the outer peripheral side of the nut end of the bolt; the sleeve is placed between the first turntable and the second turntable along the vertical direction, and one open end thereof is fixed on the disk surface of the second turntable close to the first turntable corresponding to the fixing hole. The sleeve is sleeved on the outer peripheral side of the bolt, and a plugging hole opposite to the pin hole is provided thereon; the pin is sequentially inserted into the plugging hole and the pin hole, and the inserted end of the pin extending into the pin hole abuts against the output shaft of the perfusion pump.

[0011] The beneficial effects of adopting the above are: By using the pin to sequentially pass through the plugging hole and the pin hole and making the inserted end of the pin abut against the output shaft, the fastening property, reliability and stability of the connection between the output shaft of the perfusion pump and the bolt can be improved.

[0012] Further, the cross-section of the nut end of the bolt and the cross-section of the sleeve are both polygonal.

[0013] Further, the position of the pin hole corresponding to the nut end of the bolt is a planar structure; the position of the plugging hole corresponding to the sleeve is a planar structure.

[0014] Further, both the first turntable and the second turntable are of stainless steel structure.

[0015] Further, the fixing hole is a countersunk hole on the disk surface of the second turntable away from the first turntable; a limiting ring is fixedly sleeved on the outer peripheral side of the screw sleeve, and the limiting ring contacts the step of the countersunk hole to limit the screw sleeve from detaching from the second turntable.

[0016] Further, it further includes a plurality of fixing screws, and a plurality of fixing screw holes are provided on the stepped surface of the countersunk head hole; a plurality of half holes are spaced on the outer edge of the limiting ring and are respectively arranged opposite to the plurality of fixing screw holes; the plurality of fixing screws respectively pass through the plurality of half holes and are threadedly connected in the corresponding fixing screw holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 6 is a three-dimensional structural schematic diagram of a peristaltic wheel for a perfusion pump of the present utility model installed on a perfusion pump;

[0018] Figure 2 FIG. 7 is an internal structural schematic diagram of a peristaltic wheel for a perfusion pump of the present utility model installed on a perfusion pump;

[0019] Figure 3 FIG. 8 is a three-dimensional structural schematic diagram of a peristaltic wheel for a perfusion pump of the present utility model;

[0020] Figure 4 FIG. 9 is a front explosion structural schematic diagram of a peristaltic wheel for a perfusion pump of the present utility model;

[0021] Figure 5 FIG. 10 is a reverse explosion structural schematic diagram of a peristaltic wheel for a perfusion pump of the present utility model.

[0022] In the drawings, the list of components represented by each reference numeral is as follows:

[0023] 1. First turntable, 11. First hole, 2. Second turntable, 22. Fixing hole, 221. Fixing screw hole, 3. Fixing rod, 4. Rolling sleeve, 5. Bolt, 51. Pin hole, 6. Screw sleeve, 7. Sleeve, 71. Insertion hole, 9. Perfusion pump, 10. Limiting ring, 101. Half hole, 12. Fixing screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0025] As Figure 3 and Figure 4 shown, a peristaltic wheel for a perfusion pump includes: a first turntable 1, a second turntable 2, a plurality of fixing rods 3, a plurality of rolling sleeves 4, a bolt 5 and a screw sleeve 6,

[0026] The first turntable 1 and the second turntable 2 are arranged opposite to each other at intervals. The disk surface of the first turntable 1 is provided with a plurality of first holes 11, and the plurality of first holes 11 are radially divided into at least two circles along the first turntable 1; the disk surface of the second turntable 2 is provided with a plurality of second holes, and the plurality of second holes are radially divided into at least two circles along the second turntable 2. A fixing hole 22 is provided in the middle of the second turntable 2; a plurality of first holes 11 in each circle are respectively arranged opposite to a plurality of second holes in each circle; a plurality of fixing rods 3 and a plurality of rolling sleeves 4 are both arranged along the perpendicular direction of the first turntable 1 and the second turntable 2. The two ends of the plurality of fixing rods 3 are respectively detachably inserted into a plurality of first holes 11 and a plurality of second holes in the opposite circles; a plurality of rolling sleeves 4 are respectively detachably sleeved on the outer peripheral sides of the plurality of fixing rods 3 and can rotate along the axial direction of the corresponding fixing rods 3; a bolt 5 and a nut sleeve 6 are both arranged along the perpendicular direction, and the nut end of the bolt 5 is fixed in the middle of the disk surface of the first turntable 1 close to the second turntable 2. An axial hole for connecting the output shaft of the perfusion pump 9 is provided inside the bolt 5; the nut sleeve 6 is inserted into the fixing hole 22 and is threadedly connected to the screw rod of the bolt 5.

[0027] As Figure 3 and Figure 4 shown, in some specific embodiments, it may further include a sleeve 7 and a pin. A pin hole 51 communicating with the axial hole is provided on the outer peripheral side of the nut end of the bolt 5; the sleeve 7 is arranged between the first turntable 1 and the second turntable 2 along the perpendicular direction, and one open end thereof is fixedly arranged on the disk surface of the second turntable 2 close to the first turntable 1 corresponding to the fixing hole 22. The sleeve 7 is sleeved on the outer peripheral side of the bolt 5, and a plugging hole 71 arranged opposite to the pin hole 51 is provided thereon; the pin is sequentially inserted into the plugging hole 71 and the pin hole 51, and the extending end thereof extending into the pin hole 51 abuts against the output shaft of the perfusion pump 9.

[0028] Specifically, the cross-section of the nut end of the bolt 5 and the cross-section of the sleeve 7 are both polygonal.

[0029] Specifically, the position of the pin hole 51 corresponding to the nut end of the bolt 5 is a planar structure; the position of the plugging hole 71 corresponding to the sleeve 7 is a planar structure.

[0030] Specifically, both the first turntable 1 and the second turntable 2 can be made of stainless steel.

[0031] Specifically, the fixing hole 22 can be a countersunk hole on the disk surface of the second turntable 2 away from the first turntable 1; a limiting ring 10 is sleeved on the outer peripheral side of the nut sleeve 6, and the limiting ring 10 contacts the step of the countersunk hole to limit the nut sleeve 6 from detaching from the second turntable 2.

[0032] Specifically, it further includes a plurality of fixing screws 12. A plurality of fixing screw holes 221 are provided on the step surface of the countersunk hole; a plurality of half holes 101 respectively arranged opposite to the plurality of fixing screw holes 221 are spaced on the outer edge of the limiting ring 10; the plurality of fixing screws 12 respectively pass through the plurality of half holes 101 and are threadedly connected to the corresponding fixing screw holes 221.

[0033] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A peristaltic wheel for an infusion pump, characterized in that: include: A first rotating disk (1) and a second rotating disk (2), wherein the first rotating disk (1) and the second rotating disk (2) are arranged opposite to each other with an interval, a plurality of first holes (11) are provided on the disk surface of the first rotating disk (1), and the plurality of first holes (11) are divided into at least two circles along the radial direction of the first rotating disk (1); a plurality of second holes are provided on the disk surface of the second rotating disk (2), and the plurality of second holes are divided into at least two circles along the radial direction of the second rotating disk (2), and a fixing hole (22) is provided in the middle of the second rotating disk (2); the plurality of first holes (11) in each circle are respectively arranged opposite to the plurality of second holes in each circle; A plurality of fixing rods (3) and a plurality of rolling sleeves (4), wherein the plurality of fixing rods (3) and the plurality of rolling sleeves (4) are arranged along the perpendicular direction of the first rotating disk (1) and the second rotating disk (2), and the two ends of the plurality of fixing rods (3) are respectively detachably inserted into the plurality of first holes (11) and the plurality of second holes of the relative circles; the plurality of rolling sleeves (4) are respectively detachably sleeved on the outer peripheral sides of the plurality of fixing rods (3) and can rotate along the axial direction of the corresponding fixing rods (3); A bolt (5) and a screw sleeve (6), wherein the bolt (5) and the screw sleeve (6) are arranged along the vertical direction and the nut end of the bolt (5) is fixed to the middle of the disk surface of the first turntable (1) close to the second turntable (2), and an axial hole for connecting the output shaft of the perfusion pump (9) is provided inside the bolt (5); the screw sleeve (6) is inserted into the fixing hole (22) and is threadedly connected to the screw rod of the bolt (5).

2. A peristaltic wheel for an infusion pump according to claim 1, characterized in that: It also includes a sleeve (7) and a pin, wherein the outer peripheral side of the nut end of the bolt (5) is provided with a pin hole (51) which penetrates the shaft hole; the sleeve (7) is placed between the first turntable (1) and the second turntable (2) along the vertical direction and one open end thereof is fixed on the disk surface of the second turntable (2) close to the first turntable (1) corresponding to the fixing hole (22); the sleeve (7) is sleeved on the outer peripheral side of the bolt (5) and is provided with an insertion hole (71) arranged opposite to the pin hole (51); the pin is inserted into the insertion hole (71) and the pin hole (51) in sequence and the end thereof extending into the pin hole (51) contacts the output shaft of the infusion pump (9).

3. A peristaltic wheel for an infusion pump according to claim 2, characterized in that: The cross-section of the nut end of the bolt (5) and the cross-section of the sleeve (7) are both polygonal.

4. A peristaltic wheel for an infusion pump according to claim 2, characterized in that: The position of the pin hole (51) corresponding to the nut end of the bolt (5) is a planar structure; the position of the plug hole (71) corresponding to the sleeve (7) is a planar structure.

5. The peristaltic wheel for an infusion pump according to claim 1, characterized in that: The first rotating disc (1) and the second rotating disc (2) are both made of stainless steel.

6. A peristaltic wheel for an infusion pump according to claim 1, characterized in that: The fixing hole (22) is a countersunk hole on the surface of the second turntable (2) away from the first turntable (1); a limiting ring (10) is fixedly sleeved on the outer peripheral side of the screw sleeve (6), and the limiting ring (10) contacts the step of the countersunk hole to limit the screw sleeve (6) from detaching from the second turntable (2).

7. A peristaltic wheel for an infusion pump according to claim 6, characterized in that: It also includes a plurality of fixing screws (12); the step surface of the countersunk hole is provided with a plurality of fixing screw holes (221); a plurality of half holes (101) are arranged at intervals on the outer edge of the limiting ring (10) and are respectively arranged opposite to the plurality of fixing screw holes (221); and the plurality of fixing screws (12) respectively pass through the plurality of half holes (101) and are threadedly connected in the corresponding fixing screw holes (221).

Images