Locking structure of injection pump

Abstract

The utility model discloses a locking structure of an injection pump, which relates to the field of locking mechanisms of injection pumps, and comprises a pump seat and an injector, the injector is placed in a placing groove of the pump seat, a driving unit for pushing a piston part of the injector to move is mounted on the pump seat, and the injector is arranged in the placing groove of the pump seat. A locking unit penetrating to the upper part of the pump seat is arranged in the pump seat, and the locking unit is used for fixing a sleeve part of the injector; an unlocking unit is arranged in the locking unit, and the unlocking unit in a pressing state is used for releasing limiting of the locking unit. According to the utility model, the locking unit and the unlocking unit are arranged, so that the injector sleeve can be effectively and quickly compressed and uncompressed, and the operation efficiency of the injection pump is further improved.

Description

Technical Field

[0001] The utility model relates to the field of locking mechanisms for injection pumps, in particular to a locking structure for injection pumps. Background Art

[0002] The push-type syringe pump can be set to the number of pushes (from 1 to 19,000 pushes) and can be selected to run in both directions. It can inject liquid in one direction and also recycle the injection liquid to achieve a mixing effect.

[0003] In the prior art, after the syringe pump is placed, a pressing plate is needed to compress the sleeve portion of the syringe. In the prior art, a nut is used in conjunction with a stud to tighten the pressing plate. In order to balance the compression, two nuts and studs need to be used in conjunction. However, this operation is relatively cumbersome when fixing and releasing the fixation. Utility Model Content

[0004] The purpose of the utility model is to provide a locking structure for an injection pump in order to solve the problems in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locking structure of a syringe pump, comprising a pump seat and a syringe, wherein the syringe is placed in a placement groove of the pump seat, a driving unit for pushing the piston of the syringe to move is installed on the pump seat, a locking unit is arranged inside the pump seat and penetrates to the top of the pump seat, and the locking unit is used to fix the sleeve of the syringe;

[0006] An unlocking unit is arranged inside the locking unit, and the unlocking unit in a pressed-down state is used to release the limit of the locking unit.

[0007] As a further solution of the utility model: the locking unit includes: a sliding column, a pressing sheet, a sliding groove, a clamping groove, a clamping block and a compression spring;

[0008] The sliding groove is opened at the top of the pump seat and is concave downwards, the sliding column is slidably connected to the inner cavity of the sliding groove, the pressing sheet is fixedly connected to the outer sides of the two sliding columns, and the middle section of the pressing sheet is in a "V" shape;

[0009] A plurality of the card slots are vertically and equidistantly opened on both sides of the inner wall of the sliding slot, the sliding column is slidably connected with a card block that penetrates to the outside of the sliding column, and the sliding column is provided with a receiving slot that penetrates to the outer wall of the sliding column, the receiving slot is used to accommodate the card block in a stressed and squeezed state, and a compression spring is installed in the receiving slot to drive the card block to return to its original position.

[0010] As a further solution of the utility model: the unlocking unit includes: a sliding rod, a return spring and a rope;

[0011] The slide bar is slidably connected to the inner cavity of the slide column, the bottom end of the return spring is fixedly connected to the bottom end of the inner cavity of the slide column, and the top end of the return spring is fixedly connected to the bottom end of the slide bar;

[0012] The two ends of the rope are respectively connected to the plane ends of the two clamping blocks, and the insides of the sliding column and the sliding rod are both provided with round holes for the rope to pass through.

[0013] As a further solution of the utility model: the bottom end of the clamping block is formed with an extrusion surface, and the inner wall of the clamping groove is consistent with the outer wall of the clamping block.

[0014] As a further solution of the utility model: the driving unit includes: a motor, a screw rod, a limit rod, a screw rod seat and a push plate;

[0015] The motor is mounted on one end of the pump seat through a mounting seat, the screw is connected to the output end of the motor through a coupling, and the other end of the screw is rotatably connected to the inner wall of the pump seat, and the push plate is connected to the screw through a screw seat;

[0016] Sliding seats are formed at both ends of the push plate, the limiting rod is slidably connected to the inner wall of the sliding seat, and the two ends of the limiting rod are fixedly connected to the inner wall of the pump seat.

[0017] As a further solution of the utility model: a holder for engaging the syringe piston is formed at one end of the push plate, and the top end of the holder close to the inside of the syringe piston is in an inclined surface structure.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. By setting the locking unit and the unlocking unit, the syringe sleeve can be effectively and quickly compressed and released, further improving the operating efficiency of the injection pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the locking unit of the utility model;

[0022] Figure 3 For the utility model Figure 2 A partial enlarged view of point A in the middle.

[0023] In the figure: 1. pump seat; 2. motor; 3. screw; 4. limit rod; 5. screw seat; 6. push plate; 7. holder; 8. syringe; 9. sliding column; 10. pressing piece; 11. sliding rod; 12. return spring; 13. sliding groove; 14. holder; 15. holder; 16. extrusion surface; 17. compression spring; 18. rope. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 to Figure 3 In an embodiment of the utility model, a locking structure of a syringe pump includes a pump seat 1 and a syringe 8. The syringe 8 is placed in a placement groove of the pump seat 1. A driving unit for pushing the piston of the syringe 8 to move is installed on the pump seat 1. A locking unit penetrating to the top of the pump seat 1 is arranged inside the pump seat 1. The locking unit is used to fix the sleeve of the syringe 8.

[0026] An unlocking unit is arranged inside the locking unit, and the unlocking unit in a pressed-down state is used to release the limit of the locking unit.

[0027] In this embodiment: when using the syringe pump, the syringe 8 is placed in the placement slot, and then the locking unit is pressed downward to lock the syringe 8, and then the driving unit is started, and the driving unit drives the piston part of the syringe 8 to move, thereby realizing the function of the syringe pump;

[0028] After completion, the unlocking unit is pressed to release the locking function of the locking unit, and the syringe 8 can be taken out by pulling the unlocking unit upward.

[0029] Please refer to Figure 1 , Figure 2 and Figure 3 The locking unit includes: a sliding column 9, a pressing sheet 10, a sliding groove 13, a clamping groove 14, a clamping block 15 and a compression spring 17;

[0030] The sliding groove 13 is opened at the top of the pump seat 1 and is concave downward. The sliding column 9 is slidably connected to the inner cavity of the sliding groove 13 up and down. The pressing piece 10 is fixedly connected to the outer sides of the two sliding columns 9, and the middle section of the pressing piece 10 is in a "V" shape.

[0031] A plurality of card slots 14 are vertically equidistantly arranged on both sides of the inner wall of the sliding slot 13, a card block 15 is slidably connected inside the sliding column 9 and extends to the outside of the sliding column 9, and a receiving slot is arranged inside the sliding column 9 and extends to the outer wall of the sliding column 9, the receiving slot is used to accommodate the card block 15 in a stressed and squeezed state, and a compression spring 17 is installed in the receiving slot to drive the card block 15 to return to its original position.

[0032] In this embodiment: when the placed syringe 8 is fixed, by pressing the sliding column 9, the sliding column 9 drives the block 15 to move downward until the "V"-shaped structure on the pressing sheet 10 is in close contact with the sleeve of the syringe 8;

[0033] When the sliding column 9 drives the block 15 to move downward, the block 15 continuously overlaps and misaligns with a plurality of slots 14 of different heights. When the block 15 overlaps with the slot 14, the compression spring 17 resets and drives the block 15 to move outward, and the block 15 is inserted into the slot 14 overlapping with it. When downward pressure is continuously applied to the sliding column 9, the sliding column 9 drives the block 15 to continue to move downward. At this time, the extrusion surface 16 of the block 15 is forced to drive the block 15 to retract into the accommodating groove and squeeze the compression spring 17 until the pressing sheet 10 is in close contact with the sleeve of the syringe 8. At this time, the syringe 8 is fixed.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3 , the unlocking unit includes: a slide bar 11, a return spring 12 and a rope 18;

[0035] The slide rod 11 is slidably connected to the inner cavity of the slide column 9, the bottom end of the return spring 12 is fixedly connected to the bottom end of the inner cavity of the slide column 9, and the top end of the return spring 12 is fixedly connected to the bottom end of the slide rod 11;

[0036] The two ends of the rope 18 are connected to the planar ends of the two clamping blocks 15 respectively, and the insides of the sliding column 9 and the sliding rod 11 are both provided with round holes for the rope 18 to pass through.

[0037] In this embodiment: after completing the function of the injection pump, by pressing the slide bar 11 to move downward, the slide bar 11 moves downward to pull the rope 18, and the two ends of the rope 18 respectively pull the block 15 to move and separate from the slot 14. At this time, the top plane of the block 15 is separated from the top plane of the inner wall of the slot 14, and the sliding column 9 can be pulled upward to release the limit on the syringe 8.

[0038] Please refer to Figure 3 The bottom end of the block 15 is formed with an extrusion surface 16 , and the inner wall of the slot 14 is consistent with the outer wall of the block 15 .

[0039] In this embodiment: when the block 15 coincides with the slot 14, the compression spring 17 resets and drives the block 15 to move outward, and the block 15 is inserted into the slot 14 that coincides with it. When downward pressure continues to be applied to the sliding column 9, the sliding column 9 drives the block 15 to continue to move downward. At this time, the extrusion surface 16 of the block 15 is forced to drive the block 15 to retract into the accommodating groove and squeeze the compression spring 17.

[0040] Please refer to Figure 1 The driving unit includes: a motor 2, a screw rod 3, a limit rod 4, a screw rod seat 5 and a push plate 6;

[0041] The motor 2 is mounted on one end of the pump seat 1 through a mounting seat, the screw rod 3 is connected to the output end of the motor 2 through a coupling, and the other end of the screw rod 3 is rotatably connected to the inner wall of the pump seat 1, and the push plate 6 is connected to the screw rod 3 through the screw rod seat 5;

[0042] Sliding seats are formed at both ends of the push plate 6 , the limiting rod 4 is slidably connected to the inner wall of the sliding seat, and both ends of the limiting rod 4 are fixedly connected to the inner wall of the pump seat 1 .

[0043] In this embodiment: when the fixed syringe 8 is injected with medicine, the motor 2 drives the screw 3 to rotate through the coupling, and the screw 3 drives the push plate 6 to move through the screw seat 5. Since the push plate 6 is limited by the limit rod 4, the push plate 6 moves to push the piston part of the syringe 8 to move.

[0044] Please refer to Figure 1 A holder 7 for engaging the piston of the syringe 8 is formed at one end of the push plate 6, and the top end of the holder 7 close to the inside of the piston of the syringe 8 is in an inclined surface structure.

[0045] In this embodiment, when the holder 7 moves with the push plate 6, when the push plate 6 moves back, the piston of the syringe 8 can be pulled back to achieve the purpose of recovering the liquid for mixing.

[0046] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A locking structure for an injection pump, comprising a pump base (1) and a syringe (8), wherein the syringe (8) is placed in a placement groove of the pump base (1), and a driving unit for pushing the piston of the syringe (8) to move is installed on the pump base (1), characterized in that: A locking unit is provided inside the pump seat (1) and extends through the top of the pump seat (1), and the locking unit is used to fix the sleeve portion of the syringe (8); An unlocking unit is arranged inside the locking unit, and the unlocking unit in a pressed state is used to release the limit of the locking unit; The locking unit comprises: a sliding column (9), a pressing sheet (10), a sliding groove (13), a clamping groove (14), a clamping block (15) and a compression spring (17); The sliding groove (13) is formed at the top of the pump seat (1) and is recessed downwards; the sliding column (9) is connected to the inner cavity of the sliding groove (13) by sliding up and down; the pressing sheet (10) is fixedly connected to the outer sides of the two sliding columns (9); and the middle section of the pressing sheet (10) is in a "V"-shaped structure; A plurality of the card slots (14) are vertically equidistantly arranged on both sides of the inner wall of the sliding slot (13); a card block (15) is slidably connected inside the sliding column (9) and penetrates the outside of the sliding column (9); and a receiving slot is arranged inside the sliding column (9) and penetrates the outer wall of the sliding column (9); the receiving slot is used to accommodate the card block (15) in a stressed and squeezed state; and a compression spring (17) is installed in the receiving slot to drive the card block (15) to return to its original position; The unlocking unit comprises: a sliding rod (11), a return spring (12) and a rope (18); The slide rod (11) is slidably connected to the inner cavity of the slide column (9) up and down, the bottom end of the return spring (12) is fixedly connected to the bottom end of the inner cavity of the slide column (9), and the top end of the return spring (12) is fixedly connected to the bottom end of the slide rod (11); The two ends of the rope (18) are respectively connected to the planar ends of the two clamping blocks (15), and the insides of the sliding column (9) and the sliding rod (11) are both provided with round holes for the rope (18) to pass through.

2. The locking structure of a syringe pump according to claim 1, characterized in that: The bottom end of the clamping block (15) is formed with an extrusion surface (16), and the inner wall of the clamping groove (14) is consistent with the outer wall of the clamping block (15).

3. The locking structure of a syringe pump according to claim 2, characterized in that: The driving unit comprises: a motor (2), a screw rod (3), a limiting rod (4), a screw rod seat (5) and a pushing plate (6); The motor (2) is mounted on one end of the pump seat (1) via a mounting seat, the screw rod (3) is connected to the output end of the motor (2) via a coupling, and the other end of the screw rod (3) is rotatably connected to the inner wall of the pump seat (1), and the push plate (6) is connected to the screw rod (3) via a screw rod seat (5); Sliding seats are formed at both ends of the push plate (6), the limiting rod (4) is slidably connected to the inner wall of the sliding seat, and the two ends of the limiting rod (4) are fixedly connected to the inner wall of the pump seat (1).

4. The locking structure of a syringe pump according to claim 3, characterized in that: One end of the push plate (6) is formed with a holder (7) for engaging the piston of the syringe (8), and the top end of the holder (7) close to the inside of the piston of the syringe (8) is in an inclined surface structure.

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