Negative pressure filling device for liquid medicament

Abstract

The utility model discloses a liquid medicament negative pressure filling device, and relates to the technical field of medicament filling. The device comprises a liquid inlet assembly, an air exhaust assembly and a container cover, the liquid inlet assembly comprises a liquid inlet pipe and a liquid level floater, two pipe openings are formed in the upper end of the container cover, the air exhaust assembly is communicated with one pipe opening, the upper end of the liquid inlet pipe is closed, the liquid level floater is vertically and slidably sleeved with the liquid inlet pipe, and the liquid inlet pipe is sleeved with one pipe opening. The part, above the container cover, of the liquid inlet pipe is communicated with a liquid inlet branch pipe. The liquid inlet pipe extends to the bottom of the storage tank, liquid medicine reaches the bottom of the storage tank along the liquid inlet pipe, the liquid level of the liquid medicine in the storage tank rises continuously, the liquid level in the liquid inlet pipe rises continuously along with the liquid level, and the height of the liquid level in the storage tank is known in real time; the air in the storage tank is intermittently extracted outwards through the air extraction assembly, so that the interior of the storage tank is in a negative pressure state relative to the outside, and liquid medicine needing to be injected is sucked into the storage tank.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medicine filling, particularly relate to a liquid medicine negative pressure filling device. BACKGROUND

[0002] When liquid medicine is filled, a large amount of bubbles will be generated in the medicine filling process, and part of protein medicine, vaccine and other medicine is sensitive to bubbles, and the existence of bubbles will lead to filling volume error, thereby reducing the precision of filling dose, when filling medicine into a large storage tank, the liquid level in the storage tank needs to be monitored in real time to prevent overfilling, and the method of weighing is used for real-time monitoring, and the filled liquid will lead to the fluctuation of display quality, thereby the actual amount of medicine in the storage tank cannot be accurately understood, and opening the storage tank will lead to the impurities in the external air entering the storage tank, and the medicine is polluted.

[0003] Therefore, the utility model provides a liquid medicine negative pressure filling device to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses a liquid medicine negative pressure filling device, and the liquid level float is vertically slidably sleeved in the liquid inlet pipe, the part of the liquid inlet pipe above the container cover is connected with the liquid inlet branch pipe, the liquid inlet pipe is stretched to the bottom of the storage tank, the medicine reaches the bottom of the storage tank along the liquid inlet pipe, the liquid level in the storage tank is continuously raised, the liquid level float in the liquid inlet pipe is continuously raised, and the liquid level height in the storage tank is understood in real time according to the height of the liquid level float.

[0005] To solve the above technical problems, the utility model is realized through the following technical schemes:

[0006] The utility model discloses a liquid medicine negative pressure filling device, which comprises a liquid inlet assembly, an air extraction assembly and a container cover, the liquid inlet assembly comprises a liquid inlet pipe and a liquid level float, two pipe mouths are formed in the upper end of the container cover, the air extraction assembly is communicated with one of the pipe mouths, the upper end of the liquid inlet pipe is closed, the liquid level float is vertically slidably sleeved in the liquid inlet pipe, the liquid inlet pipe is sleeved in one of the pipe mouths, and the part of the liquid inlet pipe above the container cover is connected with the liquid inlet branch pipe.

[0007] The further setting of the utility model is that the air extraction assembly includes an air extraction pipe and a piston cylinder, the lower end of the air extraction pipe is communicated with one of the pipe mouths, the lower end of the piston cylinder is communicated with the upper end of the air extraction pipe, a piston is vertically slidably sleeved in the piston cylinder, a one-way valve that is unidirectional upward is arranged in the air extraction pipe, a gas outlet branch pipe is communicated with the side wall of the air extraction pipe, and a one-way valve that is unidirectional gas outlet is arranged in the gas outlet branch pipe.

[0008] The further setting of the utility model is that the upper end of the piston cylinder is provided with a cylinder end cover, the upper end of the cylinder end cover is provided with an air extraction cylinder, the telescopic end of the air extraction cylinder penetrates through the cylinder end cover, and the telescopic end of the air extraction cylinder is fixedly connected with the upper end of the piston.

[0009] The further setting of the utility model is that the liquid level float includes a floating sleeve pipe and a floating column, the floating sleeve pipe is vertically slidably sleeved on the inner wall of the liquid inlet pipe, a group of connecting arms are fixedly arranged on the inner wall of the floating sleeve pipe in a circumferential array, and the floating column is fixedly connected to one end of the connecting arm group away from the inner wall of the floating sleeve pipe.

[0010] The further setting of the utility model is that the upper end of the floating column is fixedly provided with a float rod, the float rod penetrates through the closed end of the upper end of the liquid inlet pipe, and the upper end of the float rod is provided with a blocking cap.

[0011] The further setting of the utility model is that the upper end of the floating column is provided with a conical cap sleeve, the conical tip of the conical cap sleeve is upward, and the conical cap sleeve is sleeved outside the float rod.

[0012] The further setting of the utility model is that the lower end of the liquid inlet pipe is provided with a liquid inlet opening in a circumferential array.

[0013] The utility model has the following beneficial effects:

[0014] The utility model has the following beneficial effects:

[0015] The utility model has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description.

[0017] Figure 1 It is a kind of liquid medicament negative pressure filling device structural schematic diagram.

[0018] Figure 2 is a side sectional view of the air extraction assembly.

[0019] Figure 3 is an exploded schematic view of the air extraction assembly.

[0020] Figure 4 is a schematic view of the liquid level float structure.

[0021] Figure 5 is a schematic view of the liquid inlet pipe liquid inlet.

[0022] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0023] 1 - liquid inlet assembly, 101 - liquid inlet pipe, 101a - liquid inlet branch pipe, 101b - liquid inlet, 102 - liquid level float, 102a - float sleeve pipe, 102a-1 - connecting arm, 102b - float column, 102b-1 - float rod, 102b-2 - stop cap, 102b-3 - conical cap sleeve, 2 - air extraction assembly, 201 - air extraction pipe, 201a - air outlet branch pipe, 202 - piston cylinder, 202a - piston, 202b - cylinder end cover, 202c - air extraction cylinder, 3 - container cover, 301 - pipe opening. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Embodiment 1

[0025] Please refer to Figures 1 to 3 The utility model discloses a liquid medicine negative pressure filling device, including liquid inlet assembly 1, air extraction assembly 2 and container cover 3, liquid inlet assembly 1 includes liquid inlet pipe 101 and liquid level float 102, through the sleeve connection of liquid inlet pipe 101 in one of the pipe opening 301 on the container cover 3, the vertical sliding sleeve connection of liquid level float 102 in liquid inlet pipe 101, the part of liquid inlet pipe 101 above container cover 3 is connected with liquid inlet branch pipe 301a, liquid inlet pipe 101 is stretched to the tank bottom of storage tank, and the liquid medicine reaches the bottom of storage tank along liquid inlet pipe 101, and the liquid level in storage tank is continuously raised, and the liquid level float 102 in liquid inlet pipe 101 is continuously raised, so that the liquid level height in storage tank is understood in real time according to the height of liquid level float 102;Through the installation of air extraction assembly 2 on the other pipe opening 301 on container cover 3, the gas in storage tank is intermittently extracted outward by air extraction assembly 2, so that the storage tank is in a negative pressure state relative to the outside, and the liquid medicine that needs to be filled is sucked into the storage tank.

[0026] Specifically, two pipe mouths 301 are formed on the upper end of the container cover 3, the air extraction assembly 2 is communicated with one of the pipe mouths 301, the upper end of the liquid inlet pipe 101 is closed, the liquid level float 102 is vertically slidably sleeved in the liquid inlet pipe 101, the liquid inlet pipe 101 is sleeved in one of the pipe mouths 301, and the portion of the liquid inlet pipe 101 above the container cover 3 is communicated with a liquid inlet branch pipe 101a.

[0027] Further, the air extraction assembly 2 comprises an air extraction pipe 201 and a piston cylinder 202, the lower end of the air extraction pipe 201 is communicated with one of the pipe mouths 301, the lower end of the piston cylinder 202 is communicated with the upper end of the air extraction pipe 201, the piston cylinder 202 is vertically slidably sleeved with a piston 202a, a one-way valve in the upward direction is arranged in the air extraction pipe 201, and the sidewall of the air extraction pipe 201 is communicated with an air outlet branch pipe 201a, and a one-way valve in the air outlet direction is arranged in the air outlet branch pipe 201a.

[0028] Further, the upper end of the piston cylinder 202 is covered with a cylinder end cover 202b, the cylinder end cover 202b is provided with an air extraction cylinder 202c at the upper end, the telescopic end of the air extraction cylinder 202c penetrates through the cylinder end cover 202b, the telescopic end of the air extraction cylinder 202c is fixedly connected with the upper end of the piston 202a, the air extraction cylinder 202c drives the piston 202a to move up and down in the piston cylinder 202, when the piston 202a moves upward in the piston cylinder 202, the air in the storage tank is extracted into the piston cylinder 202, and at the same time, the one-way valve in the air outlet branch pipe 201a is closed to prevent external air from being extracted into the piston cylinder 202; when the piston 202a moves downward in the piston cylinder 202, the air in the piston cylinder 202 is pressed into the air extraction pipe 201, and at the same time, the one-way valve in the air extraction pipe 201 is closed, so that the air pressed into the air extraction pipe 201 pushes open the one-way valve in the air outlet branch pipe 201a, and the air is discharged from the air outlet branch pipe 201a.

[0029] The operation process of the embodiment is as follows:

[0030] The container cover 3 is covered on the pipe orifice of the storage tank, the bottom end of the liquid inlet pipe 101 extends to the bottom of the storage tank, the suction cylinder 202c drives the piston 202a to move up and down in the piston cylinder 202, when the piston 202a moves upward in the piston cylinder 202, the air in the storage tank is sucked into the piston cylinder 202, at the same time, the one-way valve in the air outlet branch pipe 201a is closed to prevent external air from being sucked into the piston cylinder 202, in this process, the storage tank is in a negative pressure state, so that the liquid to be filled is sucked into the storage tank along the liquid inlet pipe 101; when the piston 202a moves downward in the piston cylinder 202, the air in the piston cylinder 202 is pressed into the suction pipe 201, at the same time, the one-way valve in the suction pipe 201 is closed, so that the air pressed into the suction pipe 201 opens the one-way valve in the air outlet branch pipe 201a, and the air is discharged from the air outlet branch pipe 201a, in this process, the air pressure in the storage tank is balanced with the outside, so that the suction of the liquid is stopped, the liquid level in the liquid inlet pipe 101 is leveled with the liquid level in the storage tank, and the liquid level float 102 in the liquid inlet pipe 101 marks the liquid level in the storage tank, so as to realize real-time monitoring of the filled liquid. Embodiment 2

[0031] Please refer to Figures 1 to 5 On the basis of embodiment 1, the liquid level float 102 comprises a floating sleeve pipe 102a and a floating column 102b, the floating column 102b is arranged in the floating sleeve pipe 102a, a float rod 102b-1 is arranged at the upper end of the floating column 102b, and the float rod 102b-1 penetrates the closed end at the upper end of the liquid inlet pipe 101, so that when the liquid level in the liquid inlet pipe 101 rises, the liquid level makes the floating column 102b rise, and the float rod 102b-1 moves upward, so as to realize real-time understanding of the liquid level height in the storage tank.

[0032] Specifically, the floating sleeve pipe 102a is vertically and slidingly sleeved on the inner wall of the liquid inlet pipe 101, a group of connecting arms 102a-1 are circumferentially and fixedly arranged on the inner wall of the floating sleeve pipe 102a, and the floating column 102b is fixedly connected to one end of the group of connecting arms 102a-1 away from the inner wall of the floating sleeve pipe 102a.

[0033] Further, the upper end of the floating column 102b is fixedly provided with the float rod 102b-1, the float rod 102b-1 penetrates the closed end at the upper end of the liquid inlet pipe 101, and a cap 102b-2 is arranged at the upper end of the float rod 102b-1.

[0034] Further, the upper end of the floating column 102b is provided with a conical cap sleeve 102b-3, the conical tip of the conical cap sleeve 102b-3 is upward, the conical cap sleeve 102b-3 is sleeved outside the float rod 102b-1, and when the liquid falls on the conical cap sleeve 102b-3 from the liquid inlet pipe 101, the conical cap sleeve 102b-3 reduces the impact of the liquid on the floating column 102b, prevents the floating column 102b from being impacted downward by the flowing liquid, and causes the float rod 102b-1 to fluctuate.

[0035] Further, the circumferential array of the lower end of the liquid inlet pipe 101 is provided with liquid permeable openings 101b, and the liquid in the liquid inlet pipe 101 enters the storage tank through the liquid permeable openings 101b, and the liquid level in the liquid inlet pipe 101 is leveled with the liquid level in the storage tank.

[0036] The operation process of the embodiment is as follows:

[0037] When the gas extraction assembly 2 extracts the gas in the storage tank, the liquid enters the storage tank through the liquid permeable openings 101b along the liquid inlet pipe 101, so that the liquid level in the storage tank rises; when the gas extraction assembly 2 stops extracting the gas, the liquid level in the liquid inlet pipe 101 is leveled with the liquid level in the storage tank, and the rising liquid level in the liquid inlet pipe 101 makes the float column 102b rise, and the float rod 102b-1 moves upward, so that the liquid level in the storage tank can be known in real time.

[0038] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A liquid medicine negative pressure filling device, comprising a liquid inlet assembly (1), an air extraction assembly (2), and a container cap (3), characterized in that: The liquid inlet assembly (1) includes a liquid inlet pipe (101) and a liquid level float (102). The upper end of the container cover (3) has two openings (301). The air extraction assembly (2) is connected to one of the openings (301). The upper end of the liquid inlet pipe (101) is closed. The liquid level float (102) is vertically slidably sleeved inside the liquid inlet pipe (101). The liquid inlet pipe (101) is sleeved inside one of the openings (301). The portion of the liquid inlet pipe (101) above the container cover (3) is connected to a liquid inlet branch pipe (101a).

2. The liquid medicine negative pressure filling device according to claim 1, characterized in that: The air extraction assembly (2) includes an air extraction pipe (201) and a piston cylinder (202). The lower end of the air extraction pipe (201) is connected to one of the pipe ports (301), and the lower end of the piston cylinder (202) is connected to the upper end of the air extraction pipe (201). A piston (202a) is vertically slidably sleeved inside the piston cylinder (202). A one-way valve with one-way upward movement is provided inside the air extraction pipe (201). An air outlet branch pipe (201a) is connected to the side wall of the air extraction pipe (201), and a one-way valve with one-way air outlet is provided inside the air outlet branch pipe (201a).

3. The liquid medicine negative pressure filling device according to claim 2, characterized in that: The piston cylinder (202) is covered with a cylinder end cap (202b) at the upper end. A suction cylinder (202c) is provided at the upper end of the cylinder end cap (202b). The telescopic end of the suction cylinder (202c) passes through the cylinder end cap (202b). The telescopic end of the suction cylinder (202c) is fixedly connected to the upper end of the piston (202a).

4. The liquid medicine negative pressure filling device according to claim 1, characterized in that: The liquid level float (102) includes a float sleeve (102a) and a float (102b). The float sleeve (102a) is vertically slidably sleeved on the inner wall of the liquid inlet pipe (101). A set of connecting arms (102a-1) is fixedly arranged in a circumferential array on the inner wall of the float sleeve (102a). The float (102b) is fixedly connected to one end of the connecting arm (102a-1) set away from the inner wall of the float sleeve (102a).

5. A negative pressure filling device for liquid medicine according to claim 4, characterized in that: The upper end of the float (102b) is fixed with a float rod (102b-1), the float rod (102b-1) passes through the closed end of the upper end of the liquid inlet pipe (101), and a stop cap (102b-2) is provided on the upper end of the float rod (102b-1).

6. A negative pressure filling device for liquid medicine according to claim 5, characterized in that: The upper end of the float (102b) is provided with a cone cap sleeve (102b-3), the cone tip of the cone cap sleeve (102b-3) is facing upward, and the cone cap sleeve (102b-3) is sleeved on the outside of the buoy rod (102b-1).

7. A negative pressure filling device for liquid medicine according to claim 6, characterized in that: The lower end of the inlet pipe (101) is provided with a circumferential array of liquid permeable ports (101b).

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