Injection pump with pressure feedback

Abstract

The utility model relates to the field of injection pumps, and discloses an injection pump with pressure feedback, which comprises an injection pump support, a plurality of injection pump mechanisms and a pressure feedback device. The injection pump mechanism comprises a pump body, an injection syringe propelling mechanism, a pressure sensor and an injection syringe bayonet, the pump body is clamped with the injection pump main frame, the injection syringe propelling mechanism is fixedly installed on the pump body and fixedly connected with the pressure sensor, the injection syringe bayonet is installed on the pump body, and the injection syringe propelling mechanism is fixedly connected with the pressure sensor. The injector pushing mechanism comprises an installation block and a hydraulic cylinder, the installation block is fixedly installed on the pump body, and the bottom of the installation block is fixedly connected with the hydraulic cylinder. The utility model has the following advantages and effects: after a specific pressure is reached, the injection pump is not propelled any more, so that the filter is protected from being damaged by high pressure of liquid, normal proceeding of an experiment is ensured, simultaneous work of one or more injection pump mechanisms is supported, and the large-batch filtering requirement is conveniently met.

Description

Technical Field

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

[0002] In industries such as medicine and biopharmaceuticals, there is a widespread need for a syringe pump that can propel a syringe at a specific speed. In some applications where the liquid in the syringe needs to be filtered, a filter is installed on the syringe head before the syringe is pushed forward. During the pushing process, the filter will accumulate more and more impurities, resulting in increasing resistance to pushing. If the syringe pump continues to push at the originally set speed regardless of the resistance it encounters, it will exert increasing pressure on the filter until the filter is damaged by the pressure, the filtered material leaks, and the entire experiment fails.

[0003] Therefore, there is an urgent need for an injection pump with pressure feedback, which will stop pushing injection after reaching a specific pressure, thereby protecting the filter from being damaged by the high pressure of the liquid and ensuring the normal progress of the experiment.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide an injection pump with pressure feedback to solve the above problems.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a syringe pump with pressure feedback, comprising:

[0007] A syringe pump bracket, on which a plurality of syringe pump mechanisms are clamped;

[0008] The injection pump mechanism includes a pump body, a syringe propulsion mechanism, a pressure sensor and a syringe bayonet. The pump body is clamped to the injection pump main frame, the syringe propulsion mechanism is fixedly installed on the pump body, the syringe propulsion mechanism is fixedly connected to the pressure sensor, and the syringe bayonet is installed on the pump body.

[0009] The utility model is further configured as follows: the syringe propulsion mechanism includes a mounting block and a hydraulic cylinder, the mounting block is fixedly mounted on the pump body, the bottom of the mounting block is fixedly connected to the hydraulic cylinder, and the hydraulic rod of the hydraulic cylinder is fixedly connected to the pressure sensor.

[0010] The present invention is further configured as follows: the syringe bayonet comprises two syringe fixing plates, a syringe is clamped and fixed between the two syringe fixing plates, and a filter is installed at the end of the syringe.

[0011] By adopting the above technical solution, the syringe is clamped and fixed.

[0012] The present invention is further configured as follows: a piston is mounted on the syringe, and the pressure sensor is in contact with the piston.

[0013] The present invention is further configured as follows: the syringe bayonet is fixedly mounted on the pump body by means of bolts.

[0014] By adopting the above technical solution, the syringe bayonet can be easily replaced, and the syringe bayonet can be easily replaced for syringes of different specifications.

[0015] The present invention is further configured as follows: a control display panel is fixedly provided on the pump body, and the control display panel is electrically connected to the pressure sensor and the hydraulic cylinder.

[0016] By adopting the above technical solution, the pressure sensor and the hydraulic cylinder are controlled through the control display panel.

[0017] The present invention is further configured as follows: a plurality of power supply interfaces are provided on the injection pump bracket, a plug is installed on the pump body, and the plug is clamped with the power supply interface.

[0018] The utility model is further configured as follows: the side surface of the pump body is an L-shaped structure, and the pump body is clamped on the injection pump bracket through the L-shaped structure.

[0019] The beneficial effects of the utility model are:

[0020] The utility model provides an injection pump mechanism that stops pushing after reaching a specific pressure, thereby protecting the filter from damage by the high pressure of the liquid, ensuring the normal progress of the experiment, and supporting one or more injection pump mechanisms to work simultaneously, which is convenient for meeting large-scale filtration needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of an injection pump with pressure feedback proposed by the utility model.

[0023] Figure 2 It is a side view of a partial structural diagram of a syringe pump with pressure feedback proposed by the utility model.

[0024] Figure 3 This is a partial structural diagram of a single injection pump mechanism in an injection pump with pressure feedback proposed by the utility model.

[0025] In the figure, 1. Injection pump bracket; 2. Injection propulsion mechanism; 3. Pressure sensor; 4. Injection bayonet; 5. Control display panel; 6. Power supply interface; 7. Injection fixing plate. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0028] See also Figure 1 、 Figure 2 and Figure 3 The utility model provides a syringe pump with pressure feedback, comprising:

[0029] A syringe pump bracket 1, on which a plurality of syringe pump mechanisms are clamped;

[0030] The injection pump mechanism includes a pump body, a syringe propulsion mechanism 2, a pressure sensor 3 and a syringe bayonet 4. The pump body is clamped to the injection pump main frame 1, the syringe propulsion mechanism 2 is fixedly installed on the pump body, the syringe propulsion mechanism 2 is fixedly connected to the pressure sensor 3, and the syringe bayonet 4 is installed on the pump body.

[0031] Through the above-mentioned injection pump mechanism, the syringe propulsion mechanism 2 drives the pressure sensor 3 to move, and the pressure sensor 3 drives the piston on the syringe to move, thereby propelling the liquid in the syringe. The pressure sensor 3 feeds back the pressure in real time. When the pressure detected by the pressure sensor 3 reaches the set value in the control display panel 5, the syringe propulsion mechanism 2 stops propulsion.

[0032] Specifically, the syringe propulsion mechanism 2 includes a mounting block and a hydraulic cylinder. The mounting block is fixedly mounted on the pump body, the bottom of the mounting block is fixedly connected to the hydraulic cylinder, and the hydraulic rod of the hydraulic cylinder is fixedly connected to the pressure sensor 3. It should be noted that the hydraulic cylinder will drive the pressure sensor 3 to move when started.

[0033] Specifically, the syringe bayonet 4 includes two syringe fixing plates 7, a syringe is clamped and fixed between the two syringe fixing plates 7, a filter is installed at the end of the syringe, a piston is installed on the syringe, the pressure sensor 3 is in contact with the piston, and the syringe bayonet 4 is fixed to the pump body by bolts. It should be noted that after reaching a specific pressure, it will no longer be pushed forward, thereby protecting the filter from being damaged by the high pressure of the liquid.

[0034] Specifically, a control display panel 5 is fixedly provided on the pump body, and the control display panel 5 is electrically connected to the pressure sensor 3 and the hydraulic cylinder. It should be noted that after reaching a specific pressure, no further advancement is carried out, thereby protecting the filter from being damaged by the high pressure of the liquid and ensuring the normal progress of the experiment.

[0035] Specifically, the injection pump bracket 1 is provided with multiple power supply interfaces 6, and a plug is installed on the pump body. The plug is clamped to the power supply interface 6. The side of the pump body is an L-shaped structure, and the pump body is clamped to the injection pump bracket 1 through the L-shaped structure. It should be noted that it supports one or more injection pump mechanisms to work at the same time, which is convenient for meeting large-scale filtration needs.

[0036] Working principle:

[0037] S1: Enter specific speed and pressure values ​​in the control display panel 5 and store them. The syringe propulsion mechanism 2 drives the pressure sensor 3 to move, and the pressure sensor 3 drives the piston on the syringe to move, thereby propelling the liquid in the syringe. The pressure sensor 3 provides real-time pressure feedback. When the pressure detected by the pressure sensor 3 reaches the set value in the control display panel 5, the syringe propulsion mechanism 2 stops propulsion, and the control display panel 5 issues a prompt, waiting for personnel to handle.

[0038] S2: supports one or more syringe pump mechanisms working simultaneously, facilitating the response to large-scale filtration needs;

[0039] S3: The syringe bayonet 4 can be adapted to syringes of different capacities by replacing the syringe fixing plate 7 .

[0040] The above describes in detail the syringe pump with pressure feedback provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be noted that for those skilled in the art, without departing from the principles of the present invention, various improvements and modifications can be made to the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A syringe pump with pressure feedback, characterized in that: include: A syringe pump bracket (1), wherein a plurality of syringe pump mechanisms are clamped onto the syringe pump bracket (1); The injection pump mechanism comprises a pump body, a syringe propulsion mechanism (2), a pressure sensor (3) and a syringe bayonet (4); the pump body is clamped to the injection pump main frame (1); the syringe propulsion mechanism (2) is fixedly mounted on the pump body; the syringe propulsion mechanism (2) is fixedly connected to the pressure sensor (3); and the syringe bayonet (4) is mounted on the pump body.

2. The syringe pump with pressure feedback according to claim 1, characterized in that: The syringe propulsion mechanism (2) comprises a mounting block and a hydraulic cylinder, wherein the mounting block is fixedly mounted on the pump body, the bottom of the mounting block is fixedly connected to the hydraulic cylinder, and the hydraulic rod of the hydraulic cylinder is fixedly connected to the pressure sensor (3).

3. The syringe pump with pressure feedback according to claim 1, characterized in that: The syringe bayonet (4) comprises two syringe fixing plates (7), a syringe is clamped and fixed between the two syringe fixing plates (7), and a filter is installed at the end of the syringe.

4. The syringe pump with pressure feedback according to claim 3, characterized in that: A piston is mounted on the syringe, and the pressure sensor (3) abuts against the piston.

5. The syringe pump with pressure feedback according to claim 3, characterized in that: The syringe bayonet (4) is fixedly mounted on the pump body by means of bolts.

6. The syringe pump with pressure feedback according to claim 2, characterized in that: A control display panel (5) is fixedly provided on the pump body, and the control display panel (5) is electrically connected to the pressure sensor (3) and the hydraulic cylinder.

7. The syringe pump with pressure feedback according to claim 1, characterized in that: The injection pump bracket (1) is provided with a plurality of power supply interfaces (6), and a plug is installed on the pump body, and the plug is clamped with the power supply interface (6).

8. The syringe pump with pressure feedback according to claim 1, characterized in that: The side surface of the pump body is an L-shaped structure, and the pump body is clamped on the injection pump bracket (1) through the L-shaped structure.

Images