Novel injection pump

Abstract

The utility model discloses a novel injection pump, and belongs to the technical field of fluid transmission. The device comprises an injector, an injector drive and a lead plate, wherein the reversing valve drive comprises a motor, a trapezoidal lead screw and a switching block; the motor is installed on the back face of the lead plate, and the adapter block is located over the lead plate. The trapezoidal lead screw is connected to the back face of the lead plate in a bearing connection mode. The driving end of the motor is connected with one end of the trapezoidal lead screw, and the adapter block is in threaded connection with the trapezoidal lead screw; the injector is installed on the front face of the lead plate, and an injector push handle is connected with the adapter block. Due to the fact that the injector is detachable, injectors of different specifications can be replaced, and precise transmission of liquid in different flow ranges is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid transportation, and particularly relates to a novel syringe pump. Background Art

[0002] A syringe pump is a volumetric pump, mainly used for the distribution or transportation of fluids, and is widely used in industries such as food and chemical industry. When using a syringe pump to transfer liquid, the syringe makes a reciprocating pushing and pulling motion, and at the same time, the reversing valve changes direction to cooperate with the syringe to complete the liquid transfer.

[0003] When the syringe pump is used under some special working conditions where the internal parts of the syringe pump cannot be exposed to the air, a novel structure of syringe pump is required to meet this working condition. Summary of the Utility Model

[0004] In order to solve the problems existing in the background art, the utility model provides a novel syringe pump that can meet the high protection requirements.

[0005] A novel syringe pump includes a syringe and a syringe drive; it also includes a lead plate.

[0006] The syringe drive includes a motor, a trapezoidal lead screw, and an adapter block; the motor is installed on the back of the lead plate, and the adapter block is located directly above the lead plate; the trapezoidal lead screw is connected to the back of the lead plate in a bearing connection manner; the driving end of the motor is connected to one end of the trapezoidal lead screw, and the adapter block is threadedly connected to the trapezoidal lead screw.

[0007] The syringe is installed on the front of the lead plate, and the syringe push handle is connected to the adapter block.

[0008] Further, it also includes a motor mounting plate; the motor mounting plate is perpendicular to the lead plate, and the driving end of the motor penetrates through the motor mounting plate.

[0009] Further, a fixing seat is fixedly provided on the back of the lead plate; one end of the trapezoidal lead screw is connected to the fixing seat in a bearing manner, and the other end is connected to the driving end of the motor through a coupling; a push plate threadedly connected to the trapezoidal lead screw is provided on the trapezoidal lead screw, and a driving rod fixedly provided on the upper surface of the push plate penetrates through the fixing seat and is fixedly connected to the adapter block.

[0010] Further, the adapter block is fixedly connected to the push handle through a support rod.

[0011] Further, a constraint rod is provided between the motor mounting plate and the fixing seat; a constraint hole is provided on the push plate; the constraint rod is located in the constraint hole, and the push plate can move freely along the constraint rod.

[0012] Further, it also includes a reversing valve group and a reversing valve drive; the reversing valve group includes a plurality of reversing valves, and each reversing valve corresponds to the reversing valve drive one by one; each reversing valve has three interfaces and the reversing valves are connected in sequence; the first interface of the first-stage reversing valve is connected to the syringe, the second interface is connected to the first interface of the next-stage reversing valve, and the third interface is used for liquid outlet or liquid inlet; the first interface of the intermediate-stage reversing valve is connected to the second interface of the previous-stage reversing valve, the second interface is connected to the first interface of the next-stage reversing valve, and the third interface is used for liquid outlet or liquid inlet; the first interface of the last-stage reversing valve is connected to the second interface of the previous-stage reversing valve, and the second and third interfaces are used for liquid inlet or liquid outlet;

[0013] Further, the reversing valve drive includes a rotating shaft, a drive motor and a fixing plate; the fixing plate is located directly below the lead plate, and the valve core of the reversing valve is connected to the drive motor through the corresponding rotating shaft; the drive motor and the rotating shaft are respectively located on both sides of the fixing plate; the drive motor is fixed on the back side of the fixing plate, and its drive end penetrates through the fixing plate and is connected to the drive shaft on the other side of the fixing plate.

[0014] Further, the syringe is connected to the lead plate through a lock plate assembly; the lock plate assembly includes a lock rod, a lock spring, a lock plate and a support; the support is fixedly arranged on the front side of the lead plate, and the syringe is located between the supports; the lock rod penetrates through the support and the lead plate, and a lock spring is arranged at one end of the lock rod on the back side of the lead plate; the lock plate hinged on the support straddles and presses on the syringe and overlaps on the lock rod end on the other side of the syringe

[0015] Further, the reversing valves are all connected to the fixing plate through a pressing plate assembly; the pressing plate assembly includes a pressing rod, a spring and a pressing plate; the pressing rod vertically penetrates through the fixing plate, a spring is sleeved on the pressing rod on the back side, and a knob is arranged at the end of the pressing plate on the front side; one end of the pressing plate presses on the reversing valve, and an opening is arranged at the other end, and the pressing rod passes through the opening and is fixedly connected to the pressing plate through the knob.

[0016] The utility model has the following advantages compared with the background technology:

[0017] Due to the protection of the lead plate, the radiation source in the front can be prevented from penetrating into the syringe pump;

[0018] The syringe push rod support rod passes above the lead plate, and the protection function of the lead plate is more perfect;

[0019] Since the syringe is detachable and different specifications of syringes can be replaced, precise transmission of liquids within different flow ranges can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of an embodiment of the utility model;

[0021] Figure 2 It is a schematic structural diagram of the reversing valve drive of an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the dorsal structure of the syringe drive in the embodiment of the present utility model;

[0023] Figure 4 is Figure 3 a side view of.

[0024] Figure 5 is Figure 3 a schematic diagram of the front side structure of.

[0025] In the figure: 1, adapter block; 2, fixed seat; 3, trapezoidal lead screw; 4, drive rod; 5, restraint rod; 6, push plate; 7, motor mounting plate; 8, motor; 9, support rod; 10, drive motor; 11, reversing valve; 12, pressure rod; 13, rotating shaft; 14, fixing plate; 15, syringe; 16, locking rod; 17, syringe push handle; 18, lead plate; 19, anti - detachment block; 20, pressing plate. Specific embodiments

[0026] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the attached Figures 1-5 drawings and embodiments.

[0027] In this embodiment, it includes a syringe, a syringe drive, and a lead plate.

[0028] The syringe drive includes a motor, a trapezoidal lead screw, and an adapter block; the motor is installed on the back of the lead plate, and the adapter block is located directly above the lead plate; the trapezoidal lead screw is connected to the back of the lead plate in a bearing connection manner; the drive end of the motor is connected to one end of the trapezoidal lead screw.

[0029] A fixed seat is fixedly provided on the back of the lead plate; one end of the trapezoidal lead screw is connected to the fixed seat by a bearing, and the other end is connected to the drive end of the motor through a coupling; a push plate threadedly connected to the trapezoidal lead screw is provided on the trapezoidal lead screw, and the drive rod fixedly provided on the upper surface of the push plate penetrates through the fixed seat and is fixedly connected to the adapter block.

[0030] A restraint rod is provided between the motor mounting plate and the fixed seat, and a restraint hole is provided on the push plate; the restraint rod is located in the restraint hole, and the push plate can move freely along the restraint rod. The motor mounting plate is perpendicular to the lead plate, and the drive end of the motor penetrates through the motor mounting plate.

[0031] The syringe is installed on the front of the lead plate, and the syringe push handle is connected to the adapter block.

[0032] The syringe is connected to the lead plate through a lock plate assembly; the lock plate assembly includes a locking rod, a lock spring, a lock plate, and a support member; the support member is fixedly provided on the front of the lead plate, and the syringe is located between the support members; the locking rod penetrates through the support member and the lead plate, and a lock spring is provided at one end of the locking rod on the back side of the lead plate; the lock plate hinged on the support member straddles and presses on the syringe and overlaps on the other end of the locking rod on the other side of the syringe.

[0033] The motor drives the lead screw to rotate through the coupling, and the lead screw and the lead screw nut cooperate to drive the push plate to do reciprocating motion. The push plate also does reciprocating motion by pushing the syringe handle through the support rod and the adapter block, thereby realizing the reciprocating motion of the syringe and the transmission of the liquid.

[0034] The reversing valve group includes three reversing valves, and the reversing valves and the reversing valve drives correspond one to one; each reversing valve has three interfaces, and the reversing valves are connected in sequence; interface one of the first-stage reversing valve is connected to the syringe, interface two is connected to interface one of the next-stage reversing valve, and interface three is used for liquid discharge or liquid inlet; interface one of the second-stage reversing valve is connected to interface two of the previous-stage reversing valve, interface two is connected to interface one of the next-stage reversing valve, and interface three is used for liquid discharge or liquid inlet; interface one of the final-stage reversing valve is connected to interface two of the previous-stage reversing valve, and interface two and interface three are used for liquid inlet or liquid discharge.

[0035] The reversing valve drive includes a rotating shaft, a driving motor and a fixed plate; the fixed plate is located directly below the lead plate, and the valve core of the reversing valve is connected to the driving motor through the corresponding rotating shaft; the driving motor and the rotating shaft are respectively located on both sides of the fixed plate; the driving motor is fixed on the back side of the fixed plate, and its driving end passes through the fixed plate and is connected to the driving shaft on the other side of the fixed plate.

[0036] The motor is installed on the fixed plate, and the motor shaft is fixedly connected to the rotating shaft. The rotating shaft can drive the reversing valve to rotate. The reversing valve is installed on the rotating shaft and pressed by the pressing plate. When the three reversing valves are connected, the center distance is fixed, and the three motors cannot be placed side by side, so the middle motor is fixed on the fixed plate through the mounting block.

[0037] The reversing valves are all connected to the fixed plate through a pressure plate assembly; the pressure plate assembly includes a pressure rod, a spring and a pressure plate; the pressure rod vertically penetrates the fixed plate, a spring is mounted on the pressure rod on the back, and a knob is provided at the end of the pressure plate on the front; one end of the pressure plate is pressed on the reversing valve, and an opening is provided at the other end, the pressure rod passes through the opening and is fixedly connected to the pressure plate through the knob.

Claims

1. A novel injection pump, comprising a syringe and a syringe driver; characterized in that: Also includes lead sheet, The syringe drive comprises a motor, a trapezoidal lead screw and a transfer block; the motor is mounted on the back of the lead plate, and the transfer block is located directly above the lead plate; the trapezoidal lead screw is connected to the back of the lead plate in a bearing connection manner; the driving end of the motor is connected to one end of the trapezoidal lead screw, and the transfer block is threadedly connected to the trapezoidal lead screw; The syringe is installed on the front side of the lead plate, and the syringe push handle is connected with the adapter block.

2. A new type of injection pump according to claim 1, characterized in that: It also includes a motor mounting plate; the motor mounting plate is perpendicular to the lead plate, and the driving end of the motor passes through the motor mounting plate.

3. A new type of injection pump according to claim 1, characterized in that: A fixed seat is fixed on the back of the lead plate; one end of the trapezoidal screw is connected to the fixed seat bearing, and the other end is connected to the driving end of the motor through a coupling; the trapezoidal screw is provided with a push plate threadedly connected to it, and a driving rod fixed on the upper surface of the push plate passes through the fixed seat and is fixedly connected to the adapter block.

4. A new type of injection pump according to claim 1, characterized in that: The adapter block is fixedly connected to the push handle via a support rod.

5. A new type of injection pump according to claim 3, characterized in that: A restraint rod is arranged between the motor mounting plate and the fixing seat, and a restraint hole is arranged on the push plate; the restraint rod is located in the restraint hole, and the push plate can move freely along the restraint rod.

6. A new type of injection pump according to claim 1, characterized in that: It also includes a reversing valve group and a reversing valve drive; the reversing valve group includes multiple reversing valves, and the reversing valves and the reversing valve drives correspond to each other one by one; each reversing valve has three interfaces, and the reversing valves are connected in sequence; interface 1 of the first-stage reversing valve is connected to the syringe, interface 2 is connected to interface 1 of the next-stage reversing valve, and interface 3 is used for liquid discharge or liquid inlet; interface 1 of the intermediate-stage reversing valve is connected to interface 2 of the previous-stage reversing valve, interface 2 is connected to interface 1 of the next-stage reversing valve, and interface 3 is used for liquid discharge or liquid inlet; interface 1 of the final-stage reversing valve is connected to interface 2 of the previous-stage reversing valve, and interface 2 and interface 3 are used for liquid inlet or liquid discharge.

7. A new type of injection pump according to claim 6, characterized in that: The reversing valve drive includes a rotating shaft, a driving motor and a fixed plate; the fixed plate is located directly below the lead plate, and the valve core of the reversing valve is connected to the driving motor through the corresponding rotating shaft; the driving motor and the rotating shaft are respectively located on both sides of the fixed plate; the driving motor is fixed on the back side of the fixed plate, and its driving end passes through the fixed plate and is connected to the driving shaft on the other side of the fixed plate.

8. A new type of injection pump according to claim 1, characterized in that: The syringe is connected to the lead plate through a locking plate assembly; the locking plate assembly includes a locking rod, a locking spring, a locking plate and a support; the support is fixed to the front side of the lead plate, and the syringe is located between the support; the locking rod passes through the support and the lead plate, and a locking spring is provided on one end of the locking rod on the back side of the lead plate; the locking plate hinged on the support spans over and presses on the syringe, and overlaps the end of the locking rod on the other side of the syringe.

9. A novel injection pump according to claim 6, characterized in that: The reversing valves are connected to the fixed plate through a pressure plate assembly; the pressure plate assembly includes a pressure rod, a spring and a pressure plate; the pressure rod vertically penetrates the fixed plate, a spring is mounted on the back pressure rod, and a knob is provided at the end of the front pressure plate; one end of the pressure plate is pressed on the reversing valve, and an opening is provided at the other end, the pressure rod passes through the opening and is fixedly connected to the pressure plate through a knob.

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