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CN-116971950-B - Injection pump

CN116971950BCN 116971950 BCN116971950 BCN 116971950BCN-116971950-B

Abstract

The application relates to the field of syringes and discloses a syringe pump which comprises a frame, wherein a syringe is arranged on the frame, a piston column is arranged in the syringe in a sliding manner, a supporting frame is arranged in the frame, a driving piece is arranged on the supporting frame, a driving end of the driving piece is provided with a synchronous wheel, a driven wheel is arranged in the supporting frame in a rotating manner, a synchronous belt is sleeved on the synchronous wheel and the driven wheel in a meshed manner, a push block is fixedly arranged on the synchronous belt, one end of the push block penetrates through the frame and is fixedly connected with the piston column, and a limiting guide assembly for limiting the sliding direction of the push block is arranged in the supporting frame. The application can make the noise smaller when the injection pump is used by adopting the synchronous belt as the transmission part of the injection pump, and the synchronous belt has lower production and maintenance cost and is convenient for maintenance.

Inventors

  • XU ZHANGXIANG
  • GONG CHUANGJUN

Assignees

  • 卡川尔流体科技(上海)有限公司

Dates

Publication Date
20260508
Application Date
20230731

Claims (5)

  1. 1. The injection pump comprises a frame (1), wherein an injector (2) is arranged on the frame (1), a piston column (3) is arranged in the injector (2) in a sliding manner, and the injection pump is characterized in that a supporting frame (4) is arranged in the frame (1), a driving piece (5) is arranged on the supporting frame (4), a synchronous wheel (6) is arranged at the driving end of the driving piece (5), a driven wheel (7) is arranged in the supporting frame (4) in a rotating manner, a synchronous belt (8) is arranged on the synchronous wheel (6) and the driven wheel (7) in a meshing manner, a push block (9) is fixedly arranged on the synchronous belt (8), one end of the push block (9) penetrates through the frame (1) and is fixedly connected with the piston column (3), and a limiting guide assembly (10) for limiting the sliding direction of the push block (9) is arranged in the supporting frame (4). The limiting guide assembly (10) comprises a guide rail (101) and a guide block (102), wherein the guide rail (101) is fixedly arranged on the inner side wall of the supporting frame (4), the guide block (102) is arranged on the guide rail (101) in a sliding manner along the moving direction of the push block (9), the guide block (102) is fixedly connected with the push block (9), the guide block (102) and the push block (9) clamp the synchronous belt (8), a rack (28) is formed on the side wall, close to the synchronous belt (8), of the push block (9), and the synchronous belt (8) is meshed with the rack (28); A fixed block (21) is fixedly arranged on one side, far away from the push block (9), of the synchronous belt (8), an elastic supporting rod (22) is arranged on the side wall, far away from the push block (9), of the fixed block (21), a sliding block (23) is arranged at the end, far away from the fixed block (21), of the elastic supporting rod (22), a sliding seat (24) is adjustably arranged in the supporting frame (4) along the direction, close to or far away from the push block (9), of the sliding seat (24), the sliding seat (24) is obliquely arranged close to the side wall of the fixed block (21), the thickness of the top end of the sliding seat (24) is greater than that of the bottom end, and the sliding block (23) is slidably arranged in the sliding seat (24) along the moving opposite direction of the push block (9); The elastic support rod (22) comprises an outer sleeve (221), an inner sleeve (222) and an elastic piece (223), wherein the outer sleeve (221) is fixedly arranged on a fixed block (21), the inner sleeve (222) is fixedly arranged on a sliding block (23), the outer sleeve (221) is sleeved on the inner sleeve (222) in a sliding fit manner, and the elastic piece (223) is arranged in the outer sleeve (221) and the inner sleeve (222); The sliding support is characterized in that a support block (25) is slidably arranged in the support frame (4) along the direction close to or far away from the push block (9), the bottom end of the sliding seat (24) is rotatably arranged on the support block (25), first adjusting rods (26) are arranged on the frame (1) and the support frame (4) through internal threads, the end parts of the first adjusting rods (26) are abutted to the bottom ends of the side walls of the sliding seat (24), second adjusting rods (27) are arranged on the frame (1) and the internal threads of the support frame (4), and the end parts of the second adjusting rods (27) are abutted to the top ends of the side walls of the sliding seat (24).
  2. 2. The injection pump according to claim 1, wherein the driving piece (5) is provided with a light blocking code disc (29) connected with the driving end, the frame (1) is internally provided with a first photoelectric switch (13), and the light blocking code disc (29) is rotatably arranged in the first photoelectric switch (13).
  3. 3. An injection pump according to claim 1, characterized in that the support frame (4) is provided with a second photoelectric switch (14), the push block (9) is provided with a sensing piece (15), and when the sensing piece (15) enters the second photoelectric switch (14), the driving piece (5) is closed.
  4. 4. The injection pump of claim 1, wherein the frame (1) is provided with a valve head (16), the injector (2) is detachably arranged below the valve head (16), a liquid inlet channel (17), a liquid outlet channel (18) and a fluid channel (19) are formed in the valve head (16), the liquid inlet channel (17) is communicated with the fluid channel (19), the liquid outlet channel (18) is communicated with the fluid channel (19), the fluid channel (19) is communicated with the injector (2), a control assembly (20) for plugging and unsealing the liquid inlet channel (17) and the liquid outlet channel (18) is arranged in the frame (1), and when the liquid inlet channel (17) is plugged, the liquid outlet channel (18) is unsealed, and when the liquid inlet channel (17) is unsealed, the liquid outlet channel (18) is plugged.
  5. 5. The injection pump according to claim 4, wherein the control assembly (20) comprises an electromagnetic valve (201), a liquid inlet sealing piece (202) and a liquid outlet sealing piece (203), the liquid inlet sealing piece (202) and the liquid outlet sealing piece (203) are respectively arranged at two driving ends of the electromagnetic valve (201), the liquid inlet sealing piece (202) seals the liquid inlet channel (17), and the liquid outlet sealing piece (203) seals the liquid outlet channel (18).

Description

Injection pump Technical Field The application relates to the field of injection devices, in particular to an injection pump. Background The syringe pump is a pump type widely used in fine chemical industry, medicine, related laboratory, emerging flow chemistry and other industries. At present, the injection pump comprises a frame, an injector, a motor, a screw and a sliding block, wherein the injector is arranged on the frame, the motor is arranged on the frame, the screw is rotationally arranged in the frame and is connected with the driving end of the motor, and the sliding block is sleeved on the screw in a threaded manner and is connected with a piston column of the injector. The motor drives the sliding block to move through the lead screw, and the sliding block drives the piston column of the injector to reciprocate, so that liquid suction and liquid discharge of the injector are realized. The injection pump adopts the lead screw for transmission, and has the defects of high noise, high production and maintenance cost and inconvenient maintenance. Disclosure of Invention In order to solve the problems of large noise, inconvenient maintenance and high production and use costs caused by adoption of a screw rod for the injection pump, the application provides the injection pump. The application provides an injection pump which adopts the following technical scheme: The utility model provides a syringe pump, includes the frame, be provided with the syringe in the frame, the slip is provided with the piston post in the syringe, be provided with the carriage in the frame, be provided with the driving piece on the carriage, the drive end of driving piece is provided with the synchronizing wheel, the carriage rotation is provided with from the driving wheel, synchronizing wheel and from the driving wheel go up the meshing cover and be equipped with the hold-in range, fixed being provided with the ejector pad on the hold-in range, the one end of ejector pad passes the frame and with piston post fixed connection, be provided with in the carriage and be used for carrying out spacing guide assembly to ejector pad slip direction. Through adopting above-mentioned technical scheme, the driving piece in the frame drives the synchronizing wheel and rotates, and the synchronizing wheel rotates with driving the hold-in range from the driving wheel, and the hold-in range passes through the piston rod reciprocating sliding in the ejector pad drive syringe to realize the drawing liquid and the flowing back of syringe, simultaneously, the ejector pad is when removing, and spacing direction subassembly is spacing the ejector pad, makes the ejector pad remove more stable, thereby makes the drawing liquid and the flowing back of syringe more accurate. So set up, the syringe pump adopts the hold-in range to transmit for the noise is littleer when the syringe pump uses, and the production and the cost of maintenance of hold-in range are lower, are convenient for maintain. Preferably, the limit guide assembly comprises a guide rail and a guide block, the guide rail is fixedly arranged on the inner side wall of the supporting frame, the guide block is arranged on the guide rail in a sliding manner along the moving direction of the push block in an adaptive manner, the guide block is fixedly connected with the push block, and the guide block and the push block are used for clamping the synchronous belt. Through adopting above-mentioned technical scheme, the ejector pad drives the guide block and slides on the guide rail when removing, and the guide block cooperates with the guide rail to carry out spacingly to the removal of ejector pad, simultaneously, ejector pad and guide block carry out the centre gripping to the hold-in range, make the ejector pad be connected more stable with the hold-in range. Preferably, a rack is formed on the side wall, close to the synchronous belt, of the pushing block, and the synchronous belt is meshed with the rack. Through adopting above-mentioned technical scheme, when ejector pad and guide block carry out the centre gripping to the hold-in range, tooth and rack formation meshing on the hold-in range inside wall to make the hold-in range be connected more stable with the ejector pad, the difficult condition that takes place to skid of hold-in range. Preferably, the driving piece is provided with a light blocking code disc connected with the driving end, a first photoelectric switch is arranged in the rack, and the light blocking code disc is rotatably arranged in the first photoelectric switch. Through adopting above-mentioned technical scheme, still drive the code wheel that is in light when the driving piece drive synchronizing wheel pivoted and rotate jointly, first photoelectric switch detects the turned angle of driving piece output through the code wheel that is in light to the removal stroke of accurate control ejector pad, and then the drawing liquid and the drainage volume of accurate con