Advection injection pump

Abstract

The utility model provides an advection injection pump, which belongs to the field of analytical instruments and comprises a shell, a flat pressure valve cover is arranged above the shell, a slide way component is arranged below the shell, and a bottom cover is arranged below the slide way component. An operation assembly is arranged in the shell and comprises an operation guide column, an injector push rod with a spring is arranged in the operation guide column, ceramic steel is arranged above the injector push rod, a groove is formed in the lower portion of the ceramic steel, and the injector push rod slides along the groove in the lower portion of the ceramic steel. By the adoption of the advection injection pump, the problems that liquid outlet of an existing injection pump is discontinuous, two existing injection pumps need to be used in cooperation, the occupied space is large, flow adjustment is complex, and operation is inconvenient are solved.

Description

Technical Field

[0001] This utility model relates to the field of analytical instruments, and in particular to a horizontal flow injection pump. Background Technology

[0002] Currently, most syringe pumps on the market consist of three core components: a syringe, a reversing valve, and a mechanism that drives the syringe to perform pumping action. This traditional design has wide applications in many fields such as medical, chemical, and laboratory applications, but its inherent working mode also brings some limitations and challenges.

[0003] Because syringes work by first drawing up the liquid and then injecting it, this process results in a discontinuity in liquid delivery. During the drawing phase, the pump is in a standby state and cannot inject simultaneously, thus affecting the continuous delivery of the liquid. For applications requiring a continuous and stable liquid supply, this discontinuity can be a significant disadvantage.

[0004] To overcome this limitation, existing technologies typically employ at least two syringe pumps working in tandem to achieve continuous dispensing. While this approach addresses the issue of discontinuous dispensing to some extent, it also introduces new problems. Two pumps occupy more space, increasing the complexity and cost of the equipment. Furthermore, when flow rate adjustments are needed, the user must separately reset and input commands for both pumps, which is not only cumbersome but may also introduce errors, reducing the system's flexibility and user-friendliness.

[0005] Given the aforementioned limitations, there is an urgent market demand for a syringe pump that can overcome space constraints, achieve continuous delivery, and is easy to operate. This invention provides a horizontal flow syringe pump that allows for easy adjustment of flow rate by changing the motor speed, eliminating the need for complex reversing valves and additional pump bodies. This significantly simplifies the control system and improves operational convenience and flexibility. Furthermore, due to its compact design, this pump performs excellently even in space-constrained environments, meeting the market demand for miniaturized, continuous delivery syringe pumps. Utility Model Content

[0006] The purpose of this invention is to provide a horizontal flow injection pump that solves the problems of discontinuous liquid output, the need for two injection pumps to work together which occupy a large space, and the complexity and inconvenience of flow rate adjustment in existing injection pumps.

[0007] To achieve the above objectives, this utility model provides a horizontal flow injection pump, including a housing, a pressure equalization valve cover disposed on the upper part of the housing, a slide assembly disposed on the lower part of the housing, and a bottom cover disposed below the slide assembly;

[0008] The housing contains an operating component, which includes an operating guide post. Inside the operating guide post is a spring-loaded syringe plunger. A ceramic steel is positioned above the syringe plunger, and a groove is formed below the ceramic steel. The syringe plunger slides along the groove below the ceramic steel.

[0009] Preferably, the syringe plunger includes a needle post, a metal pusher head is disposed above the needle post, the metal pusher head has a through hole inside, the needle post is engaged in the through hole and connected to the metal pusher head, a plastic plunger pusher head is disposed above the metal pusher head, the plastic plunger pusher head is sleeved on the outside of the metal pusher head, a pusher head O-ring is disposed between the plastic plunger pusher head and the metal pusher head, the pusher head O-ring is sleeved on the metal pusher head, a needle pad is disposed below the metal pusher head, a needle spring is disposed below the needle pad, the needle spring is sleeved on the outside of the needle post, and a needle O-ring is disposed below the needle post, the needle O-ring is sleeved on the needle post.

[0010] Preferably, the slide assembly includes a slide base, a pin rail is provided above the slide base, a shaft through hole is provided inside the pin rail, a stepped groove is provided below the shaft through hole, a rotating shaft is provided inside the shaft through hole, a thrust bearing is provided outside the rotating shaft, the thrust bearing is sleeved on the rotating shaft, a spring plate is provided above the thrust bearing, the spring plate is sleeved on the rotating shaft, and the upper part of the spring plate contacts the stepped groove.

[0011] Preferably, the rotating shaft passes through the slide assembly and the bottom cover. A connecting ring is provided on the bottom cover, and a base connecting pin is provided on the connecting ring. The rotating shaft is engaged with the base connecting pin below. A copper bearing is provided above the connecting ring and is sleeved on the rotating shaft. A rubber sealing lip is provided above the copper bearing and is sleeved on the rotating shaft.

[0012] Preferably, the pin track is divided into four segments: pin track one, pin track two, pin track three, and pin track four. The depth of pin track one is greater than the depth of pin track three. Pin track one and pin track three are symmetrically distributed. Pin track two and pin track four are uniformly connected to pin track one and pin track three. Pin track two and pin track four are uniformly sloping tracks. Pin track two and pin track four are symmetrically distributed.

[0013] Preferably, a running guide steel ball is provided above the rotating shaft, and the rotating shaft is connected to the running guide column through the running guide steel ball.

[0014] Preferably, a first positioning hole is provided below the ceramic steel, and a second positioning hole corresponding to the first positioning hole is provided on the running guide post. A running guide post positioning pin is provided on the first positioning hole and the second positioning hole, and the ceramic steel is connected to the running guide post through the running guide post positioning pin.

[0015] Preferably, the pressure regulating hole is provided on the side of the pressure regulating valve cover, the water inlet and the water outlet are provided on the top of the pressure regulating valve cover, and the arc groove one and the arc groove two are provided below the water inlet and the water outlet respectively. The arc groove one and the arc groove two are located above the ejector pin track two and the ejector pin track four respectively. The water flow hole is provided on the ceramic steel and is located above the syringe plunger.

[0016] Preferably, the pressure valve cover is provided with a threaded hole and a third positioning hole, and the corresponding position on the upper part of the housing is also provided with a threaded hole and a fourth positioning hole. The pressure valve cover is connected to the housing by bolts, and the third positioning hole and the fourth positioning hole are connected by a magnetic base connecting pin.

[0017] Preferably, the bottom cover has a threaded hole and a fifth positioning hole, the slide assembly also has a threaded hole and a sixth positioning hole at the corresponding position, and the housing also has a threaded hole and a seventh positioning hole at the corresponding position. The bottom cover, the slide assembly and the housing are connected by bolts, and the fifth positioning hole, the sixth positioning hole and the seventh positioning hole are connected by a magnetic base connecting pin. An O-ring is provided on the top of the bottom cover and is positioned between the bottom cover and the slide assembly.

[0018] Therefore, the present invention employs the above-mentioned horizontal flow injection pump, and the technical effects are as follows:

[0019] 1. Continuous and stable liquid transfer: The slide assembly and the running assembly work together to achieve smooth and continuous movement of the syringe plunger, thereby ensuring continuous and stable liquid transfer;

[0020] 2. Precise flow rate control: When used with a motor, the movement speed of the syringe plunger can be easily changed by simply adjusting the motor speed, thereby achieving precise flow rate control;

[0021] 3. Small footprint: The overall design is compact, and the connections and cooperation between the components are close and reasonable, which reduces the size of the equipment and the space it occupies. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a half-sectional schematic diagram of the entire machine of this utility model;

[0024] Figure 3This is a schematic diagram of the operating component structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the slide rail assembly and bottom cover structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the ejector pin track structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the upper surface structure of the pressure valve cover of this utility model;

[0028] Figure 7 This is a schematic diagram of the lower surface structure of the pressure valve cover of this utility model.

[0029] Figure Labels

[0030] 1. Housing; 2. Pressure equalizing valve cover; 3. Slide assembly; 4. Bottom cover; 5. Running assembly; 6. Running guide post; 7. Syringe plunger; 8. Ceramic steel; 9. Ejector pin; 10. Metal plunger; 11. Plastic plunger plunger; 12. Pusher O-ring; 13. Ejector pin washer; 14. Ejector pin spring; 15. Ejector pin O-ring; 16. Slide seat; 17. Ejector pin track; 18. Rotating shaft; 19. Thrust bearing; 20. Spring plate; 21. Connecting ring; 22. Base connecting pin; 23. Copper bearing; 24. Rubber sealing lip; 25. Running guide post steel ball; 26. Running guide post positioning pin; 27. Water inlet; 28. Water outlet; 29. ​​Arc groove one; 30. Arc groove two; 31. Water flow hole; 32. Pressure regulating hole; 33. Magnetic seat connecting pin; 34. O-ring. Detailed Implementation

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0032] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0033] Example 1

[0034] like Figures 1-2 As shown, this utility model provides a horizontal flow injection pump, including a housing 1, a pressure equalization valve cover 2 disposed on the upper part of the housing 1, a slide assembly 3 disposed on the lower part of the housing 1, and a bottom cover 4 disposed on the lower part of the slide assembly 3.

[0035] like Figure 3As shown, the housing 1 serves as the main structure of the entire syringe pump, providing protection and support. Inside the housing 1 is a running assembly 5, which includes a running guide post. Inside the running guide post is a spring-loaded syringe plunger 7 to ensure stable injection. A ceramic steel plate 8 is positioned above the syringe plunger 7, and a groove is formed below the ceramic steel plate 8. The syringe plunger 7 slides along this groove, which fits tightly with the syringe plunger 7 to reduce friction.

[0036] The syringe plunger 7 includes a needle post 9, above which is a metal plunger 10. The metal plunger 10 has a through hole inside, and the needle post 9 is engaged within this hole, connecting to the metal plunger 10. This engagement ensures the stability of the needle post 9 when propelling liquid, preventing leakage or inaccurate injection. A plastic plunger plunger 11 is positioned above the metal plunger 10, fitting over the outside of the metal plunger 10. A plunger O-ring 12 is positioned between the plastic plunger plunger 11 and the metal plunger 10, fitting onto the metal plunger 10. The plastic plunger plunger 11, fitted over the metal plunger 10 and sealed by the plunger O-ring 12, further enhances the sealing effect and prevents liquid leakage. A pin washer 13 is located below the metal pusher head 10, and a pin spring 14 is located below the pin washer 13. The pin spring 14 is sleeved on the outside of the pin post 9. A pin O-ring 15 is located below the pin post 9 and is sleeved on the pin post 9. The pin spring 14 located below the pin washer 13 serves to buffer and stabilize, ensuring the smooth movement of the pin post 9 when pushing liquid, reducing the risk of component damage or liquid leakage due to excessive impact force. The pin O-ring 15 sleeved on the pin post 9 provides additional sealing protection.

[0037] like Figure 4 As shown, the slide rail assembly 3 includes a slide rail base 16, with a pin rail 17 above the slide rail base 16. The pin rail 17 provides a clear sliding path for the pins, ensuring the accuracy and stability of the sliding. A shaft through-hole is formed on the inner side of the pin rail 17, and a stepped groove is formed below the shaft through-hole. A rotating shaft 18 is installed inside the shaft through-hole. The rotating shaft 18 is the rotation center of the slide rail assembly 3. Through the cooperation of the shaft through-hole and the stepped groove, the rotating shaft 18 is securely installed and precisely positioned. A thrust bearing 19 is provided on the outer side of the rotating shaft 18, and the thrust bearing 19 is sleeved on the rotating shaft 18. A spring plate 20 is provided above the thrust bearing 19, and the spring plate 20 is sleeved on the rotating shaft 18, with its upper part contacting the stepped groove. The thrust bearing 19 and the copper bearing 23 jointly provide support and lubrication for the rotating shaft 18, reducing friction and wear during rotation. The spring plate 20 provides additional cushioning and stabilization.

[0038] A rotating shaft 18 passes through the slide assembly 3 and the bottom cover 4. A connecting ring 21 is provided on the bottom cover 4, and a base connecting pin 22 is provided on the connecting ring 21. The rotating shaft 18 is engaged with the base connecting pin 22, ensuring that the rotating shaft 18 maintains a stable position and orientation during rotation. A copper bearing 23 is provided above the connecting ring 21, and the copper bearing 23 is fitted onto the rotating shaft 18, reducing friction and wear between the rotating shaft 18 and surrounding components. The copper bearing 23 has good thermal and electrical conductivity, enabling rapid heat dissipation and reducing the impact of kinetic heat on the bearing, thus improving the working efficiency and safety of the machinery. Simultaneously, the copper bearing 23 has good sealing performance, effectively preventing water and dust from entering and protecting the rotating shaft 18 and surrounding components from damage. A rubber sealing lip 24 is provided above the copper bearing 23, and the rubber sealing lip 24 is fitted onto the rotating shaft 18. The elastic material of the rubber sealing lip 24 can accommodate the slight radial runout of the rotating shaft 18, reducing the risk of leakage from the sealing ring.

[0039] like Figure 5 As shown, the escalator track 17 is divided into four segments: escalator track 17-1, escalator track 17-2, escalator track 17-3, and escalator track 17-4. The depth of escalator track 17-1 is greater than that of escalator track 17-3. Escrow tracks 17-1 and 17-3 are centrally symmetrically distributed. Escrow tracks 17-2 and 17-4 are uniformly connected to escalator tracks 17-1 and 17-3, forming a uniform sloping track. The segmented design optimizes the sliding path of the escalator, allowing it to slide more smoothly and evenly.

[0040] A running guide ball 25 is provided above the rotating shaft 18, and the rotating shaft 18 is connected to the running guide column through the running guide ball 25. The running guide ball 25 and the running guide column together constitute the guiding system of the slide assembly 3, which ensures the precise guidance of the rotating shaft 18 during rotation, improves the rotational accuracy and stability of the rotating shaft 18, and ensures the overall performance of the slide assembly 3.

[0041] A first positioning hole is provided at the bottom of the ceramic steel 8, and a second positioning hole corresponding to the first positioning hole is provided on the running guide column. A running guide column positioning pin 26 is provided on the first positioning hole and the second positioning hole. The ceramic steel 8 is connected to the running guide column through the running guide column positioning pin 26.

[0042] like Figures 6-7As shown, a pressure regulating hole 32 is provided on the side of the pressure equalizing valve cover 2 to balance the internal pressure of the pressure equalizing valve cover 2. A water inlet hole 27 and a water outlet hole 28 are provided on the top of the pressure equalizing valve cover 2. Below the water inlet hole 27 and the water outlet hole 28, there are corresponding arc grooves 29 and 30. Arc grooves 29 and 30 are located above the ejector pin track 172 and ejector pin track 174, respectively. A water flow hole 31 is provided on the ceramic steel 8. The water flow hole 31 is located above the syringe plunger 7.

[0043] The pressure-equalizing valve cover 2 has a threaded hole and a third positioning hole. Correspondingly, threaded holes and a fourth positioning hole are also provided on the upper part of the housing 1. The pressure-equalizing valve cover 2 is connected to the housing 1 by bolts. The third and fourth positioning holes are connected by a magnetic base connecting pin 33. The bolt connection and the magnetic base connecting pin 33 ensure a secure connection between the pressure-equalizing valve cover 2 and the housing 1, preventing fluid leakage. The bottom cover 4 has a threaded hole and a fifth positioning hole. Correspondingly, threaded holes and a sixth positioning hole are provided on the slide assembly 3. Correspondingly, threaded holes and a seventh positioning hole are also provided on the lower part of the housing 1. The bottom cover 4, slide assembly 3, and housing 1 are connected by bolts. The fifth, sixth, and seventh positioning holes are connected by a magnetic base connecting pin 33. An O-ring 34 is provided on the upper part of the bottom cover 4, and the O-ring 34 is positioned between the bottom cover 4 and the slide assembly 3.

[0044] This utility model provides a horizontal flow injection pump. In use, fluid is injected into the injection pump through the water inlet; the pressure regulating hole on the pressure regulating valve cover is adjusted to set the required fluid pressure; the injection pump is started, and the running component pushes the syringe plunger to move along the ejector pin track of the slide assembly; the syringe plunger injects the fluid into the target position through the water outlet; the fluid flows out through the water outlet, completing the injection process.

[0045] Therefore, this utility model adopts the above-mentioned horizontal flow injection pump, which solves the problems of discontinuous liquid output, large space occupation due to the need for two injection pumps to be used in conjunction, and complex flow adjustment and inconvenient operation of existing injection pumps.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A horizontal flow injection pump, characterized in that, The device includes a housing, a pressure-releasing valve cover on top of the housing, a slide rail assembly on the bottom of the housing, and a bottom cover below the slide rail assembly. The housing contains an operating component, which includes an operating guide post. Inside the operating guide post is a spring-loaded syringe plunger. A ceramic steel is positioned above the syringe plunger, and a groove is formed below the ceramic steel. The syringe plunger slides along the groove below the ceramic steel.

2. The horizontal flow injection pump according to claim 1, characterized in that, The syringe plunger includes a needle post, a metal plunger head above the needle post, a through hole inside the metal plunger head, the needle post being engaged in the through hole and connected to the metal plunger head, a plastic plunger head above the metal plunger head, the plastic plunger head being sleeved on the outside of the metal plunger head, an O-ring head being disposed between the plastic plunger head and the metal plunger head, the O-ring head being sleeved on the metal plunger head, a needle pad being disposed below the metal plunger head, a needle spring being disposed below the needle pad, the needle spring being sleeved on the outside of the needle post, and a needle O-ring being disposed below the needle post, the O-ring head being sleeved on the needle post.

3. A horizontal flow injection pump according to claim 1, characterized in that, The slide assembly includes a slide base, a pin rail is provided above the slide base, a shaft through hole is provided inside the pin rail, a stepped groove is provided below the shaft through hole, a rotating shaft is provided inside the shaft through hole, a thrust bearing is provided outside the rotating shaft, the thrust bearing is sleeved on the rotating shaft, a spring plate is provided above the thrust bearing, the spring plate is sleeved on the rotating shaft, and the upper part of the spring plate is in contact with the stepped groove.

4. A horizontal flow injection pump according to claim 3, characterized in that, The rotating shaft passes through the slide assembly and the bottom cover. A connecting ring is provided on the bottom cover, and a base connecting pin is provided on the connecting ring. The rotating shaft is engaged with the base connecting pin below. A copper bearing is provided above the connecting ring and is sleeved on the rotating shaft. A rubber sealing lip is provided above the copper bearing and is sleeved on the rotating shaft.

5. A horizontal flow injection pump according to claim 3, characterized in that, The pin track is divided into four segments: pin track one, pin track two, pin track three, and pin track four. The depth of pin track one is greater than the depth of pin track three. Pin track one and pin track three are symmetrically distributed. Pin track two and pin track four are uniformly connected to pin track one and pin track three. Pin track two and pin track four are uniformly sloping tracks. Pin track two and pin track four are symmetrically distributed.

6. A horizontal flow injection pump according to claim 3, characterized in that, A running guide steel ball is provided above the rotating shaft, and the rotating shaft is connected to the running guide column through the running guide steel ball.

7. A horizontal flow injection pump according to claim 1, characterized in that, A first positioning hole is provided below the ceramic steel, and a second positioning hole corresponding to the first positioning hole is provided on the running guide post. A running guide post positioning pin is provided on the first positioning hole and the second positioning hole, and the ceramic steel is connected to the running guide post through the running guide post positioning pin.

8. A horizontal flow injection pump according to claim 1, characterized in that, The pressure regulating hole is provided on the side of the pressure regulating valve cover. A water inlet and a water outlet are provided on the top of the pressure regulating valve cover. Arc groove one and arc groove two are provided below the water inlet and the water outlet respectively. Arc groove one and arc groove two are located above the ejector pin track two and ejector pin track four respectively. A water flow hole is provided on the ceramic steel. The water flow hole is located above the syringe plunger.

9. A horizontal flow injection pump according to claim 1, characterized in that, The pressure valve cover is provided with a threaded hole and a third positioning hole. The corresponding position on the upper part of the housing is also provided with a threaded hole and a fourth positioning hole. The pressure valve cover is connected to the housing by bolts. The third positioning hole and the fourth positioning hole are connected by a magnetic base connecting pin.

10. A horizontal flow injection pump according to claim 1, characterized in that, The bottom cover has a threaded hole and a fifth positioning hole. The slide rail assembly also has a threaded hole and a sixth positioning hole at the corresponding position. The housing also has a threaded hole and a seventh positioning hole at the corresponding position below. The bottom cover, slide rail assembly, and housing are connected by bolts. The fifth positioning hole, sixth positioning hole, and seventh positioning hole are connected by a magnetic base connecting pin. An O-ring is provided on the top of the bottom cover and is positioned between the bottom cover and the slide rail assembly.

Images