Injection pump propelling device

Abstract

The utility model discloses an injection pump propulsion device, which relates to the technical field of injection pumps, and comprises a bottom plate, one side of the top surface of the bottom plate is fixedly connected with an equipment box through a support column, the front side of the bottom plate is fixedly connected with a control panel, and a pushing mechanism is arranged in the equipment box. A limiting mechanism fixedly connected with the bottom plate is arranged in front of the equipment box. Through the pushing mechanism, stable horizontal movement can be kept for a long time when the piston rod of the injection cylinder is pushed to move, the injection accuracy is high, the safety is high, through the limiting mechanism, the tail wing of the injection cylinder is placed into the positioning groove, and the injection cylinder is fixed more firmly under the action of the extrusion block; meanwhile, the barrel body of the injection barrel is pressed down and fixed through a pressing block, under the combined action of a first limiting assembly and a second limiting assembly, the injection barrels with different diameters can be fixed, the fixing stability is high, and the situation that the injection barrels move during injection is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of injection pumps, in particular to an injection pump propulsion device. Background Art

[0002] The syringe pump is composed of a stepper motor and its driver, a screw and a bracket, etc. It can reciprocate on a limited track, fix the syringe to the mounting frame of the syringe pump, and the push rod can push the plunger of the syringe to move, so as to achieve high-precision automatic injection. For example, the propulsion system of the medical syringe pump recorded in the patent announcement number CN215608312U, in which the setting of the propulsion mechanism and the installation mechanism recorded in the scheme realizes that the device is not easy to cause the displacement of the syringe when it is pushed for a long time, meets the accuracy requirements of medical work, and improves the safety and practicality of the device. However, the installation mechanism in this case can only limit and fix syringes of one size, and its application range is limited. At the same time, the stability of the syringe barrel is insufficient, and the syringe barrel may slip, resulting in unstable use of the injection needle, which in turn causes safety accidents.

[0003] Based on this, a syringe pump propulsion device is now provided, which can eliminate the disadvantages of the existing device. Utility Model Content

[0004] The utility model aims to provide a syringe pump propulsion device to solve the problem that the prior art cannot be applied to syringes of various specifications and sizes and the syringes may slide.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A syringe pump propulsion device comprises a base plate, a top surface of the base plate being fixedly connected to a device box via a support column, a front side of the device box being fixedly connected to a control panel, a pushing mechanism for pushing a syringe piston rod for injection operation being provided inside the device box, a limiting mechanism fixedly connected to the base plate being provided in front of the device box, and the limiting mechanism being used to fix the position of the syringe.

[0007] Preferably, the pushing mechanism includes a screw rod, which is installed inside the equipment box, one end of which extends through the equipment box and is fixedly connected to the output end of the motor, the screw rod is threadedly connected to the ball nut, the top and bottom surfaces of the ball nut are fixedly connected to a guide assembly, and the guide assembly located below is fixedly connected to the pushing assembly.

[0008] Preferably, the guide assembly includes a movable block fixedly connected to the top and bottom surfaces of the ball nut, and a rotating rod is fixedly connected to each of the two movable blocks. Pullies are provided at both ends of the rotating rod, and the pulleys are slidably connected to the guide piece. The guide piece is provided with two and is respectively fixedly connected to the top and bottom surfaces inside the equipment box.

[0009] Preferably, the pushing assembly includes a straight rod, which is fixedly connected to the left side surface of the movable block located below, the straight rod is slidably connected to the equipment box, the left end of the straight rod is fixedly connected to the connecting block, the front bottom surface of the connecting block is fixedly connected to the pushing block, and the pushing block is slidably connected to the movable groove on the bottom plate.

[0010] Preferably, the limiting mechanism includes a placement block fixedly connected to the top surface of the base plate, a positioning groove is provided at the left end of the placement block, a first limiting component is slidably connected in the positioning groove, an arc groove is provided on the placement block, and a second limiting component is fixedly connected to the top surface of the positioning groove.

[0011] Preferably, the first limiting assembly includes an extrusion block slidably connected to the positioning groove, two extrusion blocks are symmetrically provided and are both slidably connected to the positioning groove, the lower end of the extrusion block is fixedly connected to the top surface of the push block, an active cavity is provided inside the placement block, the push block is slidably connected to the active cavity, the right side surface of the push block is fixedly connected to the electric push rod, and the electric push rod is fixedly connected to the active cavity.

[0012] Preferably, the second limiting member comprises a mounting bracket fixedly connected to the middle position of the top surface of the placement block, an adjusting screw is threadedly connected to the middle position of the top surface of the mounting bracket, and a pressure block is fixedly connected to the bottom surface of the adjusting screw.

[0013] Preferably, the arc-shaped groove and the inner side of the pressing block are both provided with a rubber layer.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. This application achieves stable horizontal movement for a long time when pushing the piston rod of the injection barrel to move, with high injection accuracy and strong safety through the cooperation of the screw, ball nut, movable block, guide, pulley, straight rod and push block.

[0016] 2. The present application realizes the placement of the tail wing of the syringe barrel into the positioning groove by the cooperation of the placement block, the positioning groove, the extrusion block, the push block, the electric push rod, the mounting frame, the adjusting screw and the pressure block. Under the action of the extrusion block, the syringe barrel is fixed more firmly, and at the same time, the pressure block presses down and fixes the barrel of the syringe barrel. Under the joint action of the first limit assembly and the second limit assembly, syringe barrels of various diameters can be fixed with high stability, avoiding the movement of the syringe barrel during injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure inside the device box of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the guide assembly of the utility model.

[0020] Figure 4 It is a cross-sectional view of the guide assembly of the utility model.

[0021] Figure 5 It is a structural schematic diagram of the limiting mechanism of the utility model.

[0022] Figure 6 It is a cross-sectional view of the first limiting component of the utility model.

[0023] Notes on figure numbers: base plate 101, device box 102, pushing mechanism 200, screw 201, ball nut 202, movable block 203, guide member 204, pulley 205, straight rod 206, pushing block 207, limiting mechanism 300, placement block 301, positioning groove 302, extrusion block 303, pushing block 304, electric push rod 305, mounting bracket 306, adjusting screw 307, pressing block 308. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1

[0026] See also Figure 1-Figure 6 A syringe pump propulsion device comprises a base plate 101, a device box 102 is fixedly connected to the top surface of the base plate 101 via a support column, a control panel is fixedly connected to the front side of the device box 102, a pushing mechanism 200 for pushing the syringe piston rod for injection operation is provided inside the device box 102, a limiting mechanism 300 fixedly connected to the base plate 101 is provided in front of the device box 102, and the limiting mechanism 300 is used to fix the position of the syringe.

[0027] See also Figure 2-Figure 4The pushing mechanism 200 includes a screw rod 201, which is installed inside the device box 102. One end of the screw rod 201 extends through the device box 102 and is fixedly connected to the output end of the motor. When the motor is started, the screw rod 201 rotates. The screw rod 201 is threadedly connected to the ball nut 202. The rotation of the screw rod 201 provides a driving force for the movement of the ball nut 202. The top and bottom surfaces of the ball nut 202 are fixedly connected with a guide assembly. Under the limiting action of the guide assembly, the ball nut 202 is ensured to move smoothly horizontally. The guide assembly located below is fixedly connected to the pushing assembly.

[0028] See also Figure 5-Figure 6 The limiting mechanism 300 includes a placement block 301 fixedly connected to the top surface of the bottom plate 101, a positioning groove 302 is provided at the left end of the placement block 301, the positioning groove 302 is used to place the tail wing of the injection cylinder, a first limiting component is slidably connected in the positioning groove 302, the first limiting component is used to limit and fix the tail wing of the injection cylinder, an arc groove is provided on the placement block 301, and a second limiting component is fixedly connected to the top surface of the positioning groove 302, and the second limiting component is used to limit and fix the body of the injection cylinder.

[0029] Example 2

[0030] The difference from Example 1 is that please refer to Figure 2-Figure 5 The guide assembly includes a movable block 203 fixedly connected to the top and bottom surfaces of the ball nut 202. A rotating rod is fixedly connected to the two movable blocks 203. Pulleys 205 are provided at both ends of the rotating rod. The pulley 205 is slidably connected to the guide member 204. The pulley 205 slides in the guide member 204 to prevent the auxiliary ball nut 202 from being easily offset during lateral movement and to make horizontal movement more stable. Two guide members 204 are provided and are respectively fixedly connected to the top and bottom surfaces inside the device box 102.

[0031] See also Figure 2 The pushing assembly includes a straight rod 206, which is fixedly connected to the left side of the movable block 203 located below, and is slidably connected to the device box 102. The left end of the straight rod 206 is fixedly connected to the connecting block. The straight rod 206 moves, driving the connecting block to move. The front bottom surface of the connecting block is fixedly connected to the pushing block 207. The pushing block 207 is slidably connected to the movable groove on the bottom plate 101. The movement of the connecting block drives the pushing block 207 to move, thereby pushing the piston rod of the syringe to perform an injection operation.

[0032] See also Figure 5-Figure 6The first limiting assembly includes an extrusion block 303 slidably connected to the positioning groove 302. The extrusion block 303 is used to extrude and fix the syringe tail placed in the positioning groove, so that the syringe is fixed more stably. The extrusion blocks 303 are symmetrically provided with two and both are slidably connected to the positioning groove 302. The lower end of the extrusion block 303 is fixedly connected to the top surface of the push block 304. An active cavity is provided inside the placement block 301. The push block 304 is slidably connected to the active cavity. The right side of the push block 304 is fixedly connected to the electric push rod 305. The output end of the electric push rod 305 is movable, driving the push block 304 to move, thereby changing the position of the extrusion block 303 to adapt to syringe tails of different thicknesses. The electric push rod 305 is fixedly connected to the active cavity.

[0033] See also Figure 5 The second limiting member includes a mounting bracket 306 fixedly connected to the middle position of the top surface of the placement block 301, an adjusting screw 307 is threadedly connected to the middle position of the top surface of the mounting bracket 306, a pressing block 308 is fixedly connected to the bottom surface of the adjusting screw 307, and the adjusting screw 307 is rotated to drive the pressing block 308 to move downward, thereby achieving downward pressure and fixation of the syringe barrel.

[0034] See also Figure 5 The arc groove and the inner side of the pressure block 308 are both provided with a rubber layer to increase the friction between the syringe barrel and prevent the syringe barrel from sliding during injection.

[0035] Working principle: when in use, place the syringe barrel body in the arc groove of the placement block 301, place the syringe barrel tail wing in the extrusion block 303, start the electric push rod 305, the electric push rod 305 pushes the push block 304 to move, the push block 304 drives the extrusion block 303 to move, and realizes the limit fixation of the syringe barrel tail wing, rotates the adjustment screw 307, and the pressure block 308 moves downward to realize the downward pressure fixation of the syringe barrel body, starts the motor, and the ball nut 202 moves horizontally under the action of the guide assembly, and at the same time drives the straight rod 206 to move, and the straight rod 206 drives the push block 207 to move until it conflicts with the syringe barrel piston rod, sets the parameters of input amount and running speed through the control panel, and starts the motor again to achieve smooth injection.

[0036] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A syringe pump propulsion device, comprising a base plate (101), a device box (102) is fixedly connected to one side of the top surface of the base plate (101) via a support column, and a control panel is fixedly connected to the front side of the device box (102), characterized in that: A pushing mechanism (200) for pushing the piston rod of the syringe to perform an injection operation is provided inside the device box (102), and a limiting mechanism (300) fixedly connected to the bottom plate (101) is provided in front of the device box (102), and the limiting mechanism (300) is used to fix the position of the syringe; The pushing mechanism (200) comprises a screw rod (201), the screw rod (201) being installed inside the device box (102), one end of the screw rod (201) extending through the device box (102) and fixedly connected to the output end of the motor, the screw rod (201) being threadedly connected to the ball nut (202), the top surface and the bottom surface of the ball nut (202) being fixedly connected to a guide assembly, and the guide assembly located at the bottom being fixedly connected to the pushing assembly; The limiting mechanism (300) comprises a placement block (301) fixedly connected to the top surface of the bottom plate (101); a positioning groove (302) is provided at the left end of the placement block (301); a first limiting component is slidably connected in the positioning groove (302); an arc groove is provided on the placement block (301); and a second limiting component is fixedly connected to the top surface of the positioning groove (302).

2. The syringe pump propulsion device according to claim 1, characterized in that: The guide assembly comprises a movable block (203) fixedly connected to the top and bottom surfaces of the ball nut (202), a rotating rod fixedly connected to each of the two movable blocks (203), pulleys (205) being provided at both ends of the rotating rod, the pulleys (205) being slidably connected to the guide member (204), and two guide members (204) being provided and respectively fixedly connected to the top and bottom surfaces inside the device box (102).

3. The syringe pump propulsion device according to claim 2, characterized in that: The pushing assembly comprises a straight rod (206), the straight rod (206) being fixedly connected to the left side of the movable block (203) located below, the straight rod (206) being slidably connected to the device box (102), the left end of the straight rod (206) being fixedly connected to the connecting block, the front bottom surface of the connecting block being fixedly connected to the pushing block (207), and the pushing block (207) being slidably connected to the movable groove on the bottom plate (101).

4. The syringe pump propulsion device according to claim 1, characterized in that: The first limiting assembly comprises an extrusion block (303) slidably connected to the positioning groove (302), two extrusion blocks (303) are symmetrically provided and both are slidably connected to the positioning groove (302), the lower end of the extrusion block (303) is fixedly connected to the top surface of the push block (304), an active cavity is provided inside the placement block (301), the push block (304) is slidably connected to the active cavity, the right side surface of the push block (304) is fixedly connected to the output end of the electric push rod (305), and the electric push rod (305) is fixedly connected to the active cavity.

5. The syringe pump propulsion device according to claim 1, characterized in that: The second limiting assembly comprises a mounting frame (306) fixedly connected to the top surface of the placement block (301), an adjusting screw rod (307) being threadedly connected at a middle position of the top surface of the mounting frame (306), and a pressing block (308) being fixedly connected to the bottom surface of the adjusting screw rod (307).

6. The syringe pump propulsion device according to claim 5, characterized in that: The arc-shaped groove and the inner side of the pressing block (308) are both provided with a rubber layer.

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