A pressure differential doser

Abstract

The utility model discloses a pressure differential medicine feeder, which is low in cost, easy to maintain, and can avoid the blockage of traditional medicine supply. The utility model comprises a sealing box and a medicine storage barrel, wherein the sealing box comprises a water injection port, an emptying port and an air outlet; the medicine storage barrel comprises a barrel mouth and a medicine supply pipe, wherein one end of the medicine supply pipe extends into the medicine storage barrel and is located in the medicine liquid, and the other end of the medicine supply pipe extends to the outside of the medicine storage barrel; the air outlet is connected to the barrel mouth.

Description

Technical Field

[0001] The utility model relates to the technical field of differential pressure dosing devices, in particular to a differential pressure dosing device. Background Art

[0002] Traditional pressurized drug supply equipment is usually implemented with peristaltic pumps, plunger pumps and other equipment. When applied to some viscous drugs, due to the high viscosity and strong adhesion of such drugs, the traditional drug supply system often becomes blocked during the drug supply process, and cannot guarantee continuous and stable drug supply. Moreover, such equipment is usually expensive and requires high maintenance technology, which adds additional costs and operating burdens to drug manufacturers. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, one of the purposes of the utility model is to provide a pressure differential dosing device which is low in cost, easy to maintain, and can avoid the blockage of the traditional drug supply.

[0004] One of the purposes of the utility model is achieved by the following technical solution:

[0005] A pressure differential doser comprises a sealed box and a medicine storage barrel, wherein the sealed box comprises a water injection port, an exhaust port and an air outlet;

[0006] The medicine storage barrel comprises a barrel opening and a medicine supply pipe, one end of the medicine supply pipe extends into the medicine storage barrel and is located in the medicine liquid, and the other end of the medicine supply pipe extends to the outside of the medicine storage barrel;

[0007] The air outlet is communicated with the barrel opening.

[0008] Furthermore, it comprises an air pump, wherein the air outlet of the air pump is connected to the barrel opening.

[0009] Furthermore, the sealed box is provided with a pressure gauge and a liquid level display.

[0010] Furthermore, the barrel mouth is threadedly connected with a sealing cover, and the medicine supply pipe is divided into a medicine outlet section and a medicine delivery section. One end of the medicine outlet section is sleeved on one end of the sealing cover, and one end of the medicine delivery section is connected to an end of the sealing cover away from the medicine outlet section and communicated with the medicine outlet section.

[0011] Furthermore, it comprises a positioning frame, the positioning frame comprises an upper frame and a lower frame, the sealing box is located on the upper frame, and the medicine storage barrel is located on the lower frame.

[0012] Furthermore, an extension frame is provided on the side of the lower bracket, a vertical projection plane of the extension frame is located outside the vertical projection plane of the upper bracket, and the barrel mouth is located on the extension frame.

[0013] Furthermore, a slide rail is provided on the side of the upper bracket, and the slide rail is slidably connected with a plurality of pipeline fixing buckles.

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

[0015] The utility model utilizes air pressure difference to achieve dosing. Compared with dosing systems that are implemented using peristaltic pumps, plunger pumps and other equipment, the equipment cost and maintenance cost are lower, and blocked pipes can be replaced or unblocked at any time, reducing the use burden on enterprises.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of Embodiment 1 or Embodiment 2;

[0018] Figure 2 This is the pipeline diagram of Example 3;

[0019] Figure 3 A partial cross-sectional view of Embodiment 1 or Embodiment 2;

[0020] Figure 4 It is a partial view of the first or third embodiment.

[0021] In the figure: 1. Sealed box; 11. Water filling port; 12. Emptying port; 13. Air outlet; 14. Pressure gauge; 15. Liquid level indicator; 16. Air duct; 17. Box opening; 2. Medicine storage barrel; 21. Barrel opening; 22. Medicine supply pipe; 221. Medicine outlet section; 222. Medicine delivery section; 23. Sealed cover; 24. Air inlet; 25. Medicine outlet; 3. Air pump; 4. Positioning frame; 41. Upper bracket; 42. Lower bracket; 43. Extension frame; 44. Slide rail; 45. Pipeline fixing buckle. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] Embodiment 1

[0026] Reference Figure 1-4 A pressure differential doser mainly includes a sealed box 1 and a medicine storage barrel 2. The sealed box 1 is used to store air. A water inlet 11, an exhaust port 12 and an air outlet 13 are provided on the side of the sealed box 1 (a plurality of air outlets 13 are provided in this embodiment as backup, or the medicine storage barrels 2 are connected at the same time to achieve synchronous medicine supply). When medicine addition is required, water is injected into the sealed box 1 through a water inlet pipe connected to the water inlet 11, and then the air in the sealed box 1 is squeezed into the medicine storage barrel 2 to pressurize the medicine storage barrel 2, and then the medicine stored in the medicine storage barrel 2 is squeezed out to achieve medicine supply. The water inlet pipe can be connected to an electrically controlled valve to achieve remote adjustment and control, thereby improving the convenience and automation of medicine supply in this embodiment.

[0027] After the sealed box 1 is filled with water, the water is drained through the drain port 12 at the bottom of the box. At this time, the box port 17 of the sealed box 1 can be opened (the box port 17 can be set at the top of the sealed box 1 and opened and closed by a valve) to maintain gas circulation and re-fill the sealed box 1. At the same time, the discharged water can be temporarily stored as a water source for the next water injection, saving resources.

[0028] Therefore, in order to enable the staff to clearly understand the liquid level in the sealed box 1, a liquid level display 15 for monitoring the liquid level, such as a liquid level display tube, etc., can be set in the sealed box 1, and the sealed box 1 is equipped with a pressure gauge 14 to facilitate the staff to observe whether there is sufficient air pressure in the sealed box 1 to drive the medicine storage barrel 2 to discharge the medicine.

[0029] The medicine storage barrel 2 in this embodiment is used to store medicines with viscosity or other characteristics. It is transported by the handle on the back, or the barrel mouth 21 is opened directly to add medicine. The volume of the medicine storage barrel 2 can be flexibly controlled to adapt to production needs and handling conditions. The medicine storage barrel 2 mainly includes a barrel mouth 21 and a medicine supply pipe 22. In order to facilitate the staff to replace the medicine storage barrel 2 to maintain the continuous supply of medicine to the doser, a sealing cover 23 is threadedly connected to the barrel mouth 21 in this embodiment. The sealing cover 23 in this embodiment has two connecting ports, one is an air inlet 24 for air intake, and the other is a medicine outlet 25 for medicine outlet. The barrel mouth 21 can also be used as the liquid inlet and outlet of the medicine storage barrel 2 at the same time. During transportation and storage, the sealing cover 23 is threadedly connected to the barrel mouth 21 for sealing. In this embodiment, the drug supply tube 22 is divided into two parts, wherein one end of the drug outlet section 221 is sleeved on one end of the sealing cover 23, and the other end of the drug outlet section 221 is connected to an instrument for receiving medicines. The drug delivery section 222 is located in the medicine storage barrel 2, and one end of the drug delivery section 222 is plugged into the sealing cover 23 and maintained in communication with the drug outlet section 221. The other end of the drug delivery section 222 is located near the bottom of the medicine storage barrel 2 to facilitate the discharge of the medicine liquid at the bottom of the medicine storage barrel 2.

[0030] Therefore, to implement the above solution, two openings are required on the sealing cover 23, and annular protrusions are provided at both ends of the two openings. The annular protrusion on one opening is plugged or sleeved with one end of the air guide tube 16, and the annular protrusions at both ends of the other opening are used to plug or sleeve the medicine outlet section 221 and the medicine delivery section 222. The plug-in or sleeve method also facilitates rapid replacement when the medicine outlet section 221 or the medicine delivery section 222 is blocked, which is convenient and efficient.

[0031] Embodiment 2

[0032] like Figure 1 As shown, in order to improve the integrity of this embodiment and facilitate movement, storage and operation, on the basis of the above-mentioned embodiment, this embodiment is provided with a positioning frame 4 for placing the sealed box 1 and the medicine storage barrel 2. Among them, the positioning frame 4 at least includes an upper bracket 41 and a lower bracket 42, and the specific number of layers can be determined according to the number and size of the sealed box 1 and the medicine storage barrel 2. In order to improve the gas conduction efficiency, in this embodiment, the sealed box 1 is located on the upper bracket 41, and the medicine storage barrel 2 is located on the lower bracket 42, which is also convenient for carrying the medicine storage barrel 2.

[0033] In order to facilitate the installation of the sealing cover 23 on the medicine storage barrel 2, the present embodiment sets an extension frame 43 on the side of the lower bracket 42, so that the vertical projection surface of the extension frame 43 is located outside the vertical projection surface of the upper bracket 41, that is, the extension frame 43 is extended, and when the medicine storage barrel 2 is placed on the lower bracket 42, a part of the whole body is located on the extension frame 43, and then the position of the barrel mouth 21 is designed at the edge of the medicine storage barrel 2, so that it can be located on the upper part of the extension frame 43. Such a design can reduce the obstruction of the upper bracket 41, and facilitate the staff to install the sealing cover 23 and the medicine supply tube 22 more efficiently.

[0034] A plurality of medicine storage barrels 2 can be stored on the lower support 42 and the extension frame 43, so that continuity can be maintained during the medicine supply process.

[0035] Each pipeline in this embodiment is preferably a hose, which is convenient for winding, storage and replacement. In particular, for conveying viscous medicines, the material of the hose is usually more suitable for conveying. The hose has bendability and flexibility, which can more easily adapt to changes and bends in the pipeline layout, reducing the risk of leakage and damage at the pipeline connection. In addition, hoses are usually easier to install and maintain than hard pipes. In addition, the material of the hose conveying viscous medicines can better resist the pressure and wear of the liquid, avoiding the problem of liquid leakage or pipeline damage. Therefore, when conveying viscous liquids, choosing a suitable hose can improve work efficiency and safety.

[0036] At the same time, in this embodiment, a slide rail 44 is also provided on the side of the upper bracket 41, and a plurality of pipeline fixing buckles 45 are slidably connected to the slide rail 44. The slide rail 44 is a circular tube structure, and the pipeline fixing buckle 45 is an "8"-shaped structure, which is fixed on the slide rail 44 through elastic deformation and clamps the pipeline. Both installation and removal can be achieved by pulling open the opening at the top of the pipeline fixing buckle 45. The pipeline fixing buckle 45 can be used to fix the air guide tube 16 and the drug supply tube 22 to prevent the reserved length of the pipeline from being too long and scattered on the ground, resulting in being stepped on and damaged. Through the slide rail 44, the air guide tube 16 and the drug supply tube 22 can be flexibly moved according to the specific position of the medicine storage barrel 2.

[0037] Embodiment 3

[0038] like Figure 2 As shown, on the basis of the above-mentioned implementation, this embodiment adds an air pump 3 for equipment, and connects the air outlet 13 of the air pump 3 with the barrel mouth 21. In special circumstances, such as water outage, maintenance of the sealed box 1, etc., the small air pump 3 can be used to supply air to the medicine storage barrel to ensure the continuous dosing and supply of the doser to avoid affecting production. However, it should be noted that the air pump 3 usually cannot work stably for a long time, and the viscous medicine has a large resistance during the transportation process, so it is recommended to be used only for temporary emergency use.

[0039] The valves on each pipeline in the above embodiment can be manual valves or electric control valves, preferably manual solenoid valves, which can be remotely controlled to improve work efficiency and can also be manually operated by staff in special circumstances.

[0040] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A pressure differential doser, characterized in that: It comprises a sealed box (1) and a medicine storage barrel (2), wherein the sealed box (1) comprises a water injection port (11), an exhaust port (12) and an air outlet (13); The medicine storage barrel (2) comprises a barrel opening (21) and a medicine supply pipe (22), one end of the medicine supply pipe (22) extends into the medicine storage barrel (2) and is located in the medicine liquid, and the other end of the medicine supply pipe (22) extends to the outside of the medicine storage barrel (2); The air outlet (13) is communicated with the barrel opening (21).

2. A differential pressure doser as claimed in claim 1, characterized in that: It comprises an air pump (3), wherein the air outlet (13) of the air pump (3) is communicated with the barrel opening (21).

3. A differential pressure doser as claimed in claim 1 or 2, characterized in that: The sealed box (1) is provided with a pressure gauge (14) and a liquid level display (15).

4. A pressure differential doser as claimed in claim 1 or 2, characterized in that: The barrel mouth (21) is threadedly connected with a sealing cover (23); the medicine supply pipe (22) is divided into a medicine outlet section (221) and a medicine delivery section (222); one end of the medicine outlet section (221) is sleeved on one end of the sealing cover (23); one end of the medicine delivery section (222) is connected to an end of the sealing cover (23) away from the medicine outlet section (221) and communicates with the medicine outlet section (221).

5. A differential pressure doser as claimed in claim 1 or 2, characterized in that: It comprises a positioning frame (4), wherein the positioning frame (4) comprises an upper frame (41) and a lower frame (42), wherein the sealing box (1) is located on the upper frame (41), and the medicine storage barrel (2) is located on the lower frame (42).

6. A differential pressure doser as claimed in claim 5, characterized in that: An extension frame (43) is provided on the side of the lower frame (42), the vertical projection plane of the extension frame (43) is located outside the vertical projection plane of the upper frame (41), and the barrel mouth (21) is located on the extension frame (43).

7. A differential pressure doser as claimed in claim 6, characterized in that: A slide rail (44) is provided on the side of the upper bracket (41), and the slide rail (44) is slidably connected to a plurality of pipeline fixing buckles (45).

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