Accessory for fluid container and container system

Abstract

The utility model discloses an accessory for a fluid container and a container system, and the accessory comprises a lining installation part which is internally provided with an axial through pipeline channel, and the bottom of the lining installation part is provided with a lining flange used for being in sealing connection with an external lining; a holding member for joining to the mouth of the fluid container; the lining flange extends in the axial direction of the lining installation component, a welding side face is formed on the periphery of the lining flange, and the opening of the lining can wrap the periphery of the welding side face in a surrounding mode and is fixedly welded to the welding side face. The retaining part is integrally arranged on the lining mounting part and located on the axial side of the lining flange at intervals, the retaining part is provided with a clamping face, and when the lining and the welding side face are welded and fixed, the clamping face is matched with the welding clamp in a clamping mode. The maintaining component is integrally connected to the lining mounting component, so that the assembling step is omitted, pollution caused by manual assembling is avoided, high cleanliness is guaranteed, meanwhile, the welding mode of the lining and the lining flange is changed, and high cleanliness is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluid containers, and in particular relates to an accessory for a fluid container and a container system. Background Art

[0002] The prior art provides a container for storing, transporting and using liquid biological or chemical drugs including but not limited to acids, solvents, alkalis, photoresists, dopants, inorganic substances, organic substances, biological solutions, pharmaceuticals and radioactive biological or chemical drugs, wherein the container uses a disposable film bag inside to store the biological or chemical drugs, and a dispensing device used with the container can dispense the stored biological or chemical drugs.

[0003] For example, the Japanese patent No. JP1994099000B2 discloses a liquid chemical treatment device, which includes an inner bag, a mounting component, an outer bottle, a retaining device and a cover, and the specification discloses that the retaining device is a bubble shell ring of a pair of semicircular segments 40A and 40B connected by an integral hinge. Because the retaining device needs to repeatedly open and close the semicircular segments 40A and 40B during the process of cooperating with the mounting component, the semicircular segments 40A and 40B are opened to allow the mounting component to pass through, and after the top edge of the upwardly protruding parts 46A and 46B of the retaining device is engaged with the lower surface of the flange of the mounting component, the opened semicircular segments 40A and 40B are closed and installed in the bottle mouth of the outer bottle, and the flange (52A-52B) of the retaining device is engaged with the annular shoulder on the top inner surface near the bottle mouth to complete the installation. It can be seen that the retaining device and the mounting component are two separate components. When in use, the mounting component and the securing device must first be snap-fitted together to form an integral assembly, and then the integral assembly is installed into the bottle mouth of the external bottle, and the bag is heat-sealed to the top upper surface of the flange.

[0004] In another prior art patent CN219447987U, an accessory for a fluid container includes a liner mounting component and a retaining device detachably connected to the liner mounting component. The bottom of the liner mounting component is connected to the external liner. The retaining device is used to engage with the mouth of the external container, thereby retaining the liner mounting component at the mouth of the container. The liner is accommodated inside the container. Most liners are disposable bags. The retaining device includes at least two support members detachably arranged on the outer wall of the liner mounting component, and the at least two support members are used to engage with the mouth of the container. The at least two support members are arranged at intervals, and a ventilation gap is formed between adjacent support members. The ventilation gap is used to connect the inside of the container with the outside. The liner mounting component includes an annular liner flange, and the liner is welded to the upper surface of the liner flange.

[0005] In the above-mentioned prior art structures, the mounting component and the retaining component are separately arranged, and the bag as the lining needs to be welded to the upper surface of the flange at the bottom of the mounting component. Fig.10 a. The welding equipment can only weld the bag to the upper surface of the flange in the direction of up and down movement. Therefore, before the bag is welded to the upper surface of the flange, the holding component is not assembled to the mounting component. Only after the welding equipment (welding head) welds and seals the bag to the upper surface of the flange, the holding component is manually assembled to the mounting component to form an integral assembly and then installed to the barrel mouth of the barrel. Therefore, the above operation includes two operation steps: welding first and assembly later. The first step is the operation step of welding the bag to the upper surface of the flange, and the second step is the operation step of assembling the mounting component with the bag and the holding component.

[0006] However, it is found in practice that in the above two operation steps with operation order, any improper handling of any step may cause contamination of the entire accessory and deteriorate its cleanliness. In particular, in the welding step of welding the bag to the upper surface of the bottom flange of the mounting component, it is necessary to pass the positioning rod on the lower mold through the central hole of the mounting component (the central hole is the hole for inserting the dipping tube) to fix the mounting component to the lower mold, and put the opening of the bag on the upper surface of the flange, so that the welding head can move from top to bottom to weld the bag to the upper surface of the flange. The positioning rod will contaminate the central hole of the mounting component and is not conducive to the cleanliness of the mounting component; at the same time, when the holding component is manually assembled to the mounting component after the welding step is completed, the manual operation will inevitably introduce contaminants into the central hole of the mounting component and other areas of the mounting component, which will also reduce the cleanliness of the mounting component.

[0007] In summary, the combination of the two operating steps will greatly reduce the cleanliness of the entire accessory. Since the accessory can be used in barrels in the semiconductor field and sealed with the liner, the cleanliness of the accessory itself is crucial. Once the accessory is contaminated or the cleanliness of the accessory is low, the chemical liquid in the lining will also be contaminated. In practice, the accessory is required to have a high degree of cleanliness. The problem of controlling the cleanliness of the accessory is a technical problem that R&D personnel have always been eager to solve but have never been successful in the research and development process. Utility Model Content

[0008] In order to overcome the shortcomings of the prior art, the utility model provides an accessory and a container system for a fluid container. The retaining component integrally arranged with the lining installation component omits the assembly step, thereby ensuring the high cleanliness of the lining installation component. A lining flange extending axially is formed at the bottom of the lining installation component. When the lining and the lining flange are welded and fixed, the clamping surface of the retaining component can cooperate with the clamp to firmly clamp the accessory. The lining is welded from the side of the lining flange. The retaining component will not interfere with the welding clamp, thereby ensuring the high cleanliness of the pipeline channel of the lining installation component.

[0009] The technical solution adopted by the utility model to solve the technical problem is: an accessory for a fluid container, the accessory comprising:

[0010] A lining installation component, wherein an axially penetrating pipeline channel is formed inside and a lining flange is provided at the bottom, wherein the lining flange is used for sealing connection with the external lining so that the inner cavity of the lining is connected with the pipeline channel;

[0011] a retaining member for coupling to a mouth of a fluid container;

[0012] The lining flange extends along the axial direction of the lining mounting component and forms a welding side surface on the outer periphery, and the opening of the lining can surround and cover the outer periphery of the welding side surface and be welded and fixed thereto;

[0013] The retaining component is integrally arranged on the lining mounting component and is spaced apart on one axial side of the lining flange. The retaining component has a clamping surface. When the lining is welded and fixed to the welding side, the clamping surface is clamped and matched with a welding fixture.

[0014] The accessories provided by the utility model firstly keep the components integrally connected to the lining installation components, thereby omitting the assembly steps required when the retaining components and the lining installation components are separate, saving the time of manual operation for assembling the retaining components and the lining installation components together, and avoiding the contamination of the pipeline channel and other areas of the lining installation components caused by the manual assembly of the retaining components and the lining installation components, thereby ensuring the high cleanliness of the lining installation components. Secondly, the lining flange extends axially along the lining mounting component, thereby changing the welding direction of the lining and the lining flange, and changing the lining welding from the upper surface of the lining flange to the side of the lining flange. During the welding process, the retaining component can not only be used to support the mouth of the fluid container during installation, but also provide a clamping surface for cooperating with an external welding fixture. The welding fixture clamps the retaining component through the clamping surface, that is, it can firmly clamp the retaining component and the lining mounting component as an integrated accessory. The welding head welds the lining and the welding side of the lining flange from the side of the lining flange, and the welding head will not be interfered by the retaining component. Therefore, when the lining and the lining flange are welded and fixed, the lining mounting component is no longer fixed by passing the positioning rod through the pipeline channel of the lining mounting component. Instead, the retaining component outside the pipeline channel is directly and firmly clamped by the welding fixture, thereby avoiding the contamination of the pipeline channel by the positioning rod and ensuring the high cleanliness of the pipeline channel of the lining mounting component. Finally, the synergistic effect of the integrated setting between the retaining component and the lining installation component and the clamping surface of the welding clamp holding the retaining component is that, on the one hand, the welding clamp can firmly clamp the entire accessory, avoiding the situation when the retaining component and the lining installation component are separately set and the two may be separated due to vibration or shaking when the welding clamp clamps the separate retaining component, causing the welding clamp to be unable to firmly clamp the accessory, thereby affecting the welding of the welding side of the lining and the lining flange and causing leakage. On the other hand, compared with directly clamping the lining installation component body, the welding clamp clamps the clamping surface of the retaining component, which not only makes the clamping more stable, but also avoids interference with the welding between the lining flange and the lining due to clamping the lining installation component body, and avoids the welding clamp wearing the lining installation component and causing adverse effects on cleanliness.

[0015] Preferably, the retaining component comprises a retaining body, and the clamping surface is formed on an outer side surface of the retaining body.

[0016] In this way, the clamping surface is arranged on the outer side surface of the retaining body to better cooperate with the welding fixture, so that when the liner and the lining flange are welded and fixed, the lining installation component and the retaining component can be roughly horizontally lying. Therefore, after the opening of the liner is wrapped around the welding side surface of the lining flange, the lining that is roughly horizontally lying will not easily separate from the welding side surface due to its own gravity, which helps the welding head to weld and fix the liner and the lining flange.

[0017] Preferably, the retaining body is in a circular ring shape, and the clamping surface includes at least two flat surfaces spaced apart on the outer side of the retaining body.

[0018] With such arrangement, on the one hand, at least two flat surfaces of the retaining component provide sufficient contact area and are convenient for contact and cooperation with the welding fixture, and the arrangement of the at least two flat surfaces can be adjusted to better cooperate with the welding fixture. Compared with the direct clamping of the peripheral curved surface of the retaining component by the welding fixture, the clamping will be more stable, which is convenient for the welding fixture to firmly clamp the retaining component and avoid unstable clamping that affects the effective welding of the liner and the welding side. On the other hand, when the retaining component is supported to the mouth of the fluid container, the retaining component is installed and adapted to the mouth so that when an external air source is applied for ventilation, the flat surface and the inner wall of the mouth of the fluid container are against each other, which can prevent the annular retaining component from rotating randomly and ensure that the space between the liner and the inner wall of the fluid container is roughly evenly aired, thereby better squeezing the liner.

[0019] Preferably, the number of the welding side faces is two, which are relatively arranged on both sides of the lining mounting component, and the shape formed by the two welding side faces has a major axis and a minor axis, and the length of the major axis is greater than the length of the minor axis.

[0020] With such arrangement, when the lining and the lining flange are welded and fixed, compared with the lining being sleeved on the upper surface of the circular lining flange, the lining flange with a long axis and a short axis makes the lining opening need to open a smaller area, and when the lining opening is wrapped around the welding side, the area of ​​the lining opening is reduced, thereby preventing more dust from falling into the lining opening with a larger area and contaminating the interior of the lining, ensuring that the interior of the lining has a high degree of cleanliness. In addition, the two oppositely arranged welding side surfaces enable the two welding heads to respectively approach the welding side surfaces from the sides of the two welding side surfaces to weld the lining, that is, the two welding heads move towards each other to effectively weld the lining opening to the two welding side surfaces.

[0021] Preferably, the clamping surface comprises two flat surfaces arranged opposite to each other, and each of the flat surfaces is arranged parallel to the long axis.

[0022] With such an arrangement, when the welding fixture clamps two relatively arranged flat surfaces, it is convenient to cooperate with the welding fixture. The welding fixture can clamp and hold the components from the opposite sides of the lining mounting component. At the same time, when the flat surfaces are parallel to the long axis, the direction of the clamping force of the welding fixture on the flat surfaces is basically collinear with the direction of the force applied by the welding head to the welding side when welding, thereby ensuring that the welding fixture can still stably clamp and hold the components during welding.

[0023] Preferably, the shape formed by the two welded side surfaces is a spindle, an ellipse or a parallelogram.

[0024] With such arrangement, the spindle, ellipse and parallelogram are in a flat mouth shape with gradually narrowing ends. When the lining opening and the lining flange are welded and fixed, the lining opening needs to be opened in a small area, which effectively prevents more dust from falling into the interior of the lining, thereby ensuring the high cleanliness of the interior of the lining. At the same time, the above shapes are also convenient for processing.

[0025] Preferably, the welding side surface comprises at least two active surfaces spaced apart along the axial direction, and a molten material groove is provided between two adjacent active surfaces.

[0026] With such arrangement, when the lining opening is welded to the welding side, the active surface is fixed to the lining opening after being melted, and the molten liquid can be received in the melt groove, so as to prevent the liquid from bulging toward the outer edge of the welding side and affecting the welding of the lining and the welding side. Compared with the welding side being an entire continuous and smooth plane, the provision of the melt groove and the active surface structure can ensure a more stable and effective welding fixation between the lining and the welding side.

[0027] Preferably, at least one of the upper and lower outer edges of the connection point between the two welding side surfaces has a chamfer for accommodating the welding liquid.

[0028] With such arrangement, when the lining opening is surrounded and wrapped around the two welding side faces for welding, the connection between the two welding side faces must also be effectively welded to the lining opening, and the connection between the two welding side faces is also melted with welding liquid, and the chamfer can store the welding liquid, thereby ensuring that when the lining opening and the welding side faces are welded and fixed, the welding liquid at the connection can be fully and evenly received, thereby ensuring the effective welding and fixation of the lining and the lining flange.

[0029] Preferably, the retaining component has a ventilation hole, and at least two ventilation holes are provided. The at least two ventilation holes are evenly arranged around the circumference of the lining mounting component.

[0030] With such arrangement, the vent holes are relatively evenly distributed, and when the vent holes let air into the space between the liner and the fluid container, the air can also be let in roughly evenly, thereby squeezing the liner relatively evenly and facilitating the even extrusion of the liquid medicine in the liner.

[0031] Preferably, an anti-falling protrusion is provided on the inner wall of the pipeline channel.

[0032] With such arrangement, in actual use, the dip tube is inserted into the pipeline channel and directly into the suspended position at the bottom of the inner cavity of the liner. Since the diameters of different types of dip tubes are different, in order to prevent the dip tube from falling excessively downward from the pipeline channel, the bottom end of the dip tube is supported on the bottom of the liner and the fluid container to affect the extrusion of the liquid. The anti-fall protrusion can form a certain limiting effect on the dip tube to prevent the dip tube from moving further downward.

[0033] The utility model also discloses a container system, including a fluid container, a liner and the accessories for the fluid container, wherein the fluid container has a mouth, the inner wall of the mouth has an annular step for supporting the retaining component, the fluid container surrounds the liner, and the vent is connected to the annular space between the fluid container and the liner.

[0034] The container system of the utility model firstly utilizes a welding fixture to clamp the clamping surface of the retaining component, so as to facilitate welding and fixing the lining opening and the welding side surface of the lining flange, and then the accessory connected with the lining is directly placed into the fluid container from the mouth of the fluid container as a whole, and the retaining component is supported on the annular step of the inner wall of the mouth. The whole assembly and use process is simple, and the pipeline channel of the lining installation component will not be contaminated due to too many installation steps, thereby ensuring the high cleanliness of the liquid medicine.

[0035] The beneficial effects of the utility model are as follows: first, the retaining component is integrally connected to the lining installation component, thereby omitting the assembly steps required when the retaining component and the lining installation component are separate, saving the steps of manual operation of assembling the retaining component and the lining installation component together, and avoiding contamination of the pipeline channel and other areas of the lining installation component caused by manual assembly of the retaining component and the lining installation component, thereby ensuring the cleanliness of the lining installation component. Secondly, the lining flange extends axially along the lining mounting component, thereby changing the welding direction of the lining and the lining flange, and changing the lining welding from the upper surface of the lining flange to the side of the lining flange. During the welding process, the retaining component can not only be used to support the mouth of the fluid container during installation, but also provide a clamping surface for cooperating with an external welding fixture. The welding fixture clamps the retaining component through the clamping surface, that is, it can firmly clamp the retaining component and the lining mounting component as an integrated accessory. The welding head welds the lining and the welding side of the lining flange from the side of the lining flange, and the welding head will not be interfered by the retaining component. Therefore, when the lining and the lining flange are welded and fixed, the lining mounting component is no longer fixed by passing the positioning rod through the pipeline channel of the lining mounting component. Instead, the retaining component outside the pipeline channel is firmly clamped by the welding fixture, thereby avoiding the contamination of the pipeline channel by the positioning rod and ensuring that the pipeline channel of the lining mounting component has a good cleanliness. Finally, the synergistic effect of the integrated setting between the retaining component and the lining installation component and the clamping surface of the welding clamp holding the retaining component is that, on the one hand, the welding clamp can firmly clamp the entire accessory, avoiding the situation when the retaining component and the lining installation component are separately set and the two may be separated due to vibration or shaking when the welding clamp clamps the separate retaining component, causing the welding clamp to be unable to firmly clamp the accessory, thereby affecting the welding of the welding side of the lining and the lining flange and causing leakage. On the other hand, compared with directly clamping the lining installation component body, the welding clamp clamps the clamping surface of the retaining component, which not only makes the clamping more stable, but also avoids interference with the welding between the lining flange and the lining due to clamping the lining installation component body, and avoids the welding clamp wearing the lining installation component and causing adverse effects on cleanliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The three-dimensional structure of the accessory provided by the embodiment of the utility model Figure 1 .

[0037] Figure 2 The three-dimensional structure of the accessory provided by the embodiment of the utility model Figure 2 .

[0038] Figure 3 A side view of an accessory provided in an embodiment of the utility model.

[0039] Figure 4 A cross-sectional view of an accessory provided in an embodiment of the utility model.

[0040] Figure 5 A bottom view of the accessory provided in an embodiment of the utility model.

[0041] Figure 6 A cross-sectional view of the assembly structure of the accessory and the lining provided in an embodiment of the utility model.

[0042] Figure 7 A cross-sectional view of a container system provided in an embodiment of the present utility model.

[0043] Figure 8 for Figure 7 A magnified view of the structure in Figure 2.

[0044] Fig. 9 A three-dimensional cross-sectional view of a container provided in an embodiment of the utility model.

[0045] Fig.10 a is a schematic diagram of the welding direction of the lining and the flange in the prior art. Fig.10 b is a schematic diagram of the welding direction of the lining and the lining flange in the utility model.

[0046] Among them, 1-lining installation component, 11-pipe channel, 111-anti-fall protrusion, 12-lining flange, 13-welding side, 131-acting surface, 132-melt groove, 133-chamfer, 2-holding component, 21-clamping surface, 22-holding body, 23-vent, 3-fluid container, 31-mouth, 32-annular step, 33-annular space, 4-lining, 41-inner cavity of lining, 42-lining opening. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0048] like Figure 1-Figure 9As shown, an accessory for a fluid container includes a liner installation component 1 and a retaining component 2 integrally arranged on the outer surface of the liner installation component 1. The interior of the liner installation component 1 forms an axially penetrating pipeline channel 11, and the bottom has a liner flange 12, and the liner flange 12 is used to be sealed and connected with the external liner 4, so that the inner cavity 41 of the liner 4 is connected with the pipeline channel 11. It should be noted here that the liner 4 is not a component of the accessory, so it is described as the external liner 4 here, and the liner 4 and the liner flange 12 need to be connected before being accommodated in the fluid container 3.

[0049] The retaining component 2 is used to engage with the mouth 31 of the fluid container 3, so as to retain the lining mounting component 1 in the mouth 31 of the fluid container 3, and the lining 4 is accommodated in the fluid container 3. The fluid container 3 can be a chemical liquid storage barrel, the mouth 31 is the barrel mouth of the chemical liquid storage barrel, and the lining 4 is a disposable bag, and the disposable bag stores chemical liquids in the semiconductor field. In addition, when the accessory can be applied in the field of life sciences, the disposable bag stores biological liquids related to life sciences. The above application of the accessories is only an example, not an absolute limitation.

[0050] like Figure 1 or Figure 3 The liner flange 12 extends along the axial direction of the liner mounting component 1, and a welding side surface 13 is formed on the outer periphery of the liner flange 12. The opening 42 of the liner 4 can surround and cover the outer periphery of the welding side surface 13, and the opening 42 of the liner 4 is welded and fixed to the welding side surface 13. The liner mounting component 1 is a substantially cylindrical component, and its axial direction is the central axis direction, that is, Figure 3 In the up-down direction, therefore, the axially extending lining flange 12 has a certain height, and the lining flange 12 has welding side surfaces 13 in the left and right sides and / or the front and rear sides.

[0051] The retaining component 2 is spaced apart from the lining flange 12 in the axial direction, that is, the retaining component 2 and the lining flange 12 are spaced apart in the axial direction of the lining mounting component 1, and the retaining component 2 and the lining flange 12 are spaced apart by an appropriate distance. Figure 1-4 It can be known that the retaining component 2 is located axially above the lining flange 12. The retaining component 2 has a clamping surface 21. When the lining 4 is welded and fixed to the welding side surface 13, the clamping surface 21 is clamped and matched with the welding fixture. The accessory provided by the utility model omits the assembly of the retaining component 2 and the lining installation component 1, and changes the welding method of the lining installation component 1 and the lining 4, which is as follows:

[0052] like Fig.10As shown in a, in the prior art, the lining 4 is welded to the upper surface of the flange, and the lining installation component is fixed by the positioning rod passing through the pipe channel of the lining installation component. The welding head of the welding equipment completes the welding along the up and down vertical directions shown by the arrows. The retaining component cannot be installed on the lining installation component before welding. Only after the welding fixation is completed, the retaining component can be assembled on the lining installation component to avoid interference with the retaining component when the welding head moves up and down. The lining flange 12 of the accessory in the utility model extends along the axial direction of the lining installation component 1, and forms a welding side surface 13 on the outer periphery of the lining flange 12, that is, the outer peripheral side surface of the lining flange 12 is formed as the welding side surface 13. Therefore, when the lining 4 is welded to the welding side surface 13 of the lining flange 12, as shown in FIG. Fig.10 As shown in FIG. 2 , the welding head moves along the horizontal direction indicated by the arrow (left and right direction in the figure) from the side of the lining flange 12 to approach the welding side surface 13 to achieve welding fixation between the lining 4 and the lining flange 12. At this time, the fixing of the lining mounting component 1 is achieved by clamping the external welding fixture on the clamping surface 21 of the holding component 2. At this time, the welding head moves in a direction substantially parallel to the holding component 2, and the welding head will not be interfered by the holding component 2 during the movement of the welding head.

[0053] Since the movement direction of the welding head will not be interfered by the holding component 2, the holding component 2 is integrally connected to the lining installation component 1 from the beginning, thereby changing the split structure of the holding component 2 and the lining installation component 1 into an integral structure, that is, omitting the assembly steps of the two, saving the time of manual assembly steps, and avoiding the contamination of the pipeline channel 11 and other areas of the lining installation component 1 caused by the manual assembly of the holding component 2 and the lining installation component 1, thereby ensuring the cleanliness of the lining installation component 1. It should be noted that the holding component 2 is integrally connected to the lining installation component 1 here, which can be formed by integral injection molding of the holding component 2 and the lining installation component 1, or by welding the lining installation component 1 to the outer surface of the holding component 2, and there is no specific limitation.

[0054] Furthermore, in this embodiment, when the liner 4 and the welding side 13 of the liner flange 12 are welded and fixed, the liner installation component 1 is no longer fixed by passing the positioning rod through the pipeline channel 11 of the liner installation component 1, but is fixed by firmly clamping the liner installation component 1 with a welding fixture. At this time, in addition to being used to support the mouth 31 of the fluid container 3, the holding component 2 can also provide a clamping surface 21 for cooperating with an external welding fixture. After the welding fixture clamps the holding component 2, it can firmly clamp the holding component 2 and the liner installation component 1 as an integrated accessory. The clamping cooperation of the welding fixture and the clamping surface 21 does not involve the positioning of the pipeline channel 11 by the positioning rod, avoids contamination of the pipeline channel 11, and ensures the high cleanliness of the liner installation component 1.

[0055] In addition, the integral connection of the retaining component 2 and the lining installation component 1 is beneficial to the clamping cooperation between the welding fixture and the clamping surface 21. When the retaining component 2 and the lining installation component 1 are detachably connected, only when the two are very tightly matched can it be ensured that the retaining component 2 and the lining installation component 1 do not shake relative to each other. Therefore, the welding fixture used to clamp the detachable retaining component 2 is definitely not conducive to the effective and stable clamping of the entire accessory. Therefore, the retaining component 2 and the lining installation component 1 need to be tightly matched, but this will cause the wear of the two to produce particles, which will still affect the cleanliness. In the utility model, since the retaining component 2 and the lining installation component 1 are arranged in one piece, it is also avoided that when the retaining component 2 and the lining installation component 1 are separately arranged, the welding fixture cannot firmly clamp the retaining component 2, resulting in shaking between the lining installation component 2 and the lining installation component 1, thereby affecting the welding effect of the lining 4 and the welding side 13 and causing leakage, and it is also avoided that the wear of the two causes an adverse effect on cleanliness. The advantage of the clamping surface 21 of the welding fixture clamping the retaining component 2 is that it avoids the welding fixture from directly clamping and cooperating with the lining installation component 1. If the welding fixture is clamped on the side of the lining installation component 1 close to the lining flange 12, it will occupy a certain space and cause interference with the welding head; the top of the pipeline channel 11 will be plugged with a plug during welding to prevent contamination of the inside of the pipeline channel 11. If the welding fixture is clamped on the side of the lining installation component 1 away from the lining flange 12, the welding fixture will be closer to the top of the pipeline channel 11 and interfere with the plug, causing the plug to detach and causing more dust to enter the pipeline channel 11 and cause pollution. The retaining component 2 integrally clamped by the welding fixture not only has a stable clamping, but also can maintain a corresponding appropriate distance from both ends of the pipeline channel 11, and will not interfere with the plug or the welding head, thereby ensuring the high cleanliness and welding effect of the lining installation component 1.

[0056] Specifically, Figure 1 , Figure 2 As shown, the holding component 2 includes a holding body 22. In this embodiment, the clamping surface 21 is formed on the outer side of the holding body 22. When the liner 4 and the liner flange 12 are welded and fixed, the holding component 2 can be arranged horizontally. Here, horizontal means relative to Figure 3 In terms of vertical placement, that is, Fig.10 The vertically arranged accessories in b are rotated 90° clockwise or counterclockwise to be in a horizontal arrangement, so when the opening 42 of the liner 2 is sleeved onto the welding side surface 13 of the liner flange 12, the liner 4 will also be in a horizontal lying state, and the liner 4 will not be easily separated due to its own gravity, which is conducive to the welding and fixing of the liner 4 and the liner flange 12. Of course, in other embodiments, the clamping surface 21 can also be formed as the upper and lower surfaces of the holding body 22.

[0057] In this embodiment, the holding body 22 is annular, and the clamping surface 21 includes at least two straight surfaces spaced apart on the outer side of the holding body 22. Specifically, the at least two straight surfaces are symmetrically arranged on both radial sides of the holding body 22. Of course, in other embodiments, the clamping surface 21 can also be formed in other shapes.

[0058] like Figure 1 , Figure 2 , Figure 5 As shown, there are two welding side surfaces 13, which are arranged on both sides of the lining mounting component 1, and the shape formed by the two welding side surfaces 13 has a long axis and a short axis, and the length of the long axis is greater than the length of the short axis. Specifically, Figure 5 The major axis is c and the minor axis is d.

[0059] In this embodiment, the upward-viewed shape formed by the two welding side surfaces 13 is a spindle shape. Of course, in other embodiments, the upward-viewed shape formed by the two welding side surfaces 13 can also be an ellipse, or a parallelogram, or a shape with a circular arc arched outward in the middle and flat surfaces on both sides, as long as it is guaranteed to have a major axis and a minor axis, there is no specific limitation. Under the above shape, when the welding side surfaces 13 of the liner 4 and the liner flange 12 are welded and fixed, compared with the liner 4 being sleeved on the upper surface of the circular liner flange in the prior art, the area that the liner 4 opening 42 needs to open is smaller. When the opening of the liner 4 surrounds and covers the liner flange 12, the size of the opening 42 of the liner 4 is reduced, thereby preventing more dust from falling in and contaminating the liner cavity 41, and then contaminating the liquid in the liner cavity 41, ensuring the high cleanliness of the liner 4 and its internal liquid.

[0060] Reference Figure 5 As shown, in this embodiment, the clamping surface 21 includes two flat surfaces relatively arranged on the outer side of the holding component 2, and the two flat surfaces are arranged parallel to the above-mentioned major axis c. Therefore, when the welding fixture clamps the two flat surfaces, the contact and matching effect of the two is better to play a role in stable clamping, and the force direction of the welding fixture on the clamping surface 21 is basically parallel to the minor axis d. When the welding device / welding head welds the two welding side surfaces 13, the force direction of the welding device / welding head on the welding side surface 13 is also parallel to the minor axis d, which will be more conducive to ensuring that the welding fixture is clamped more firmly during welding.

[0061] After the structural design of the clamping surface 21, the retaining component 2 becomes a roughly rounded rectangle, that is, the retaining component 2 has two relatively arranged flat surfaces and two relatively arranged arc surfaces. On the one hand, the above structure facilitates the welding fixture to firmly clamp the retaining component 2 from the opposite sides, so as to facilitate the effective welding of the liner 4 to the welding side 13; on the other hand, when the retaining component 2 is supported in the mouth 31 of the fluid container 3, since the mouth 31 is generally circular, the rounded rectangular retaining component 2 can prevent the retaining component 2 from rotating randomly while being installed and adapted with the mouth 31, because the circular retaining component 2 is easy to rotate when the circular retaining component 2 and the circular mouth 31 are matched, especially when the liner 4 is ventilated and squeezed, the circular retaining component 2 is blown by the gas and rotates randomly, which easily leads to uneven air intake in the space between the liner 4 and the inner wall of the fluid container 3 and cannot squeeze the liner 4 well, and when the rounded rectangular retaining component 2 and the circular mouth 31 are matched, the rounded rectangular retaining component 2 is stopped by the flat surface, and is not easy to rotate even during ventilation.

[0062] like Figure 1-Figure 3 As shown, the welding side surface 13 includes at least two action surfaces 131 spaced apart in the axial direction, and a melt groove 132 is provided between two adjacent action surfaces 131. When the opening 42 of the liner 4 is welded to the welding side surface 13, the welding side surface 13 is heated and melted, and the molten liquid allows the action surface 131 to be welded with the liner 4 and part of the liquid to be received in the melt groove 132, so as to avoid the liquid from being squeezed out / bulged toward the outer edge of the welding side surface 13 and affecting the welding of the liner 4 and the welding side surface 13. Compared with the welding side surface 13 being a whole continuous and smooth plane, the setting of the melt groove 132 structure divides the welding side surface 13 into a plurality of spaced action surfaces 131, so as to ensure a more stable and effective welding fixation between the liner 4 and the welding side surface 13.

[0063] In addition, in addition to the effective welding of the active surface of the welding side surface 13 with the opening of the liner 1, the connection of the two welding side surfaces 13 is also effectively welded with the opening of the liner 1, and at least one of the upper and lower outer edges of the connection of the two welding side surfaces 13 has a chamfer 133 for accommodating the welding liquid. In this embodiment, the upper edge and the lower edge of the connection of the two ends of the two welding side surfaces 13 are both provided with chamfers 133, and the four chamfers 133 can store and accommodate the welding liquid. Therefore, when the molten liquid on the outer edge of the welding side surface 13 can effectively weld the connection of the two welding side surfaces 13 and the opening 42 of the liner 4, the liquid extruded / bulged outward will be received in the chamfer 133, and effectively welded with the liner 4 at the chamfer 133, thereby ensuring that when the opening 42 of the liner 4 and the connection of the two welding side surfaces 13 are welded and fixed, the molten liquid can be fully and evenly received, ensuring the effective welding and fixing of the liner 4 and the liner flange 12.

[0064] In order to be able to pressurize and squeeze out the liquid in the liner 4, the retaining component 2 has vent holes 23, the number of which is at least two, and at least two vent holes 23 are evenly arranged around the circumference of the liner mounting component 1. When the upper part of the retaining component 2 and the mouth 31 of the fluid container 3 are ventilated by an external air source device or a pressurizing device, the gas is evenly introduced into the space between the liner 4 and the fluid container 3 from the evenly distributed vent holes 23, and then the liner 4 is relatively evenly pressed so that the liquid in the liner 4 is evenly squeezed out.

[0065] like Figure 4 As shown, the inner wall of the pipeline channel 11 is provided with an anti-falling protrusion 111. In actual use, the suction tube is inserted into the pipeline channel 11 and directly inserted into the suspended position above the bottom of the inner cavity 41 of the liner 4. Since the diameters of different types of suction tubes are different, in order to prevent the suction tube from falling out of the pipeline channel 11, the bottom end of the suction tube is supported on the bottom of the liner 4 and the fluid container 3 to affect the extrusion of the liquid, the anti-falling protrusion 111 can form a certain limiting effect on the suction tube to prevent the suction tube from moving further downward.

[0066] The utility model also discloses a container system, such as Figure 7 As shown, it includes a fluid container 3, a liner 4, and the above-mentioned accessories for the fluid container, such as Figure 8 , Fig. 9 As shown, the fluid container 3 has a mouth 31, and the inner wall of the mouth 31 has an annular step 32 for supporting the retaining component 2. The fluid container 3 surrounds the liner 4, so an annular space 33 is formed between the inner wall of the fluid container 3 and the outer wall of the liner 4. The vent hole 23 is connected to the annular space 33 between the fluid container 3 and the liner 4, that is, the vent hole 23 is used to connect the annular space 33 with the outside world, and the outside world refers to an external gas source or a pressurizing device, and is not specifically limited.

[0067] When the container system provided by the utility model is used, the clamping surface 21 of the matching holding component 2 is first clamped by a welding fixture to facilitate welding and fixing the opening 42 of the liner 4 and the welding side surface 13 of the liner flange 12, and then the accessory connected with the liner 4 is directly placed in the mouth 31 of the fluid container 3, and the holding component 2 is supported on the annular step 32 of the inner wall of the mouth 31, and a space 33 is formed between the liner 4 and the fluid container 3. The entire assembly and use process is simple, and the pipeline channel 11 of the liner installation component 1 will not be contaminated due to excessive installation steps, ensuring the high cleanliness of the liquid medicine.

[0068] In the application of some embodiments, a threaded cover is screwed onto the thread of the mouth 31 of the fluid container 3. The cover has a hole in the center for inserting a dip tube. Both sides of the hole have air ports, which are connected to the mouth 31 of the fluid container 3. Gas is introduced from the air ports. After the gas enters the mouth 31, it enters the annular space 33 formed between the liner 4 and the inner wall of the fluid container 3 from the air vent 23. The gas will compress the liner 4. The liner mounting component 1 is defined by a pipeline channel 11 for inserting a dip tube. The tube is inserted from the pipeline channel 11 to a suspended position above the bottom of the liner 4. The gas forces the chemical liquid in the liner 4 to be squeezed into the dip tube.

[0069] The above specific implementation modes are used to explain the present invention rather than to limit the present invention. Any modification and change made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. An accessory for a fluid container, the accessory comprising: A lining installation component, wherein an axially penetrating pipeline channel is formed inside and a lining flange is provided at the bottom, wherein the lining flange is used for sealing connection with the external lining so that the inner cavity of the lining is connected with the pipeline channel; A retaining member for coupling to a mouth of a fluid container; characterized in that: The lining flange extends along the axial direction of the lining mounting component and forms a welding side surface on the outer periphery, and the opening of the lining can surround and cover the outer periphery of the welding side surface and be welded and fixed thereto; The retaining component is integrally arranged on the lining mounting component and is spaced apart on one axial side of the lining flange. The retaining component has a clamping surface. When the lining is welded and fixed to the welding side, the clamping surface is clamped and matched with a welding fixture.

2. The accessory for a fluid container according to claim 1, characterized in that: The holding component includes a holding body, and the clamping surface is formed on the outer side surface of the holding body.

3. The accessory for a fluid container according to claim 2, characterized in that: The retaining body is in the shape of a circular ring, and the clamping surface includes at least two flat surfaces arranged at intervals on the outer side of the retaining body.

4. The accessory for a fluid container according to claim 1, characterized in that: The number of the welding side surfaces is two, which are relatively arranged on both sides of the lining installation component, and the shape formed by the two welding side surfaces has a long axis and a short axis, and the length of the long axis is greater than the length of the short axis.

5. The accessory for a fluid container according to claim 4, characterized in that: The clamping surface includes two flat surfaces arranged opposite to each other, and each of the flat surfaces is arranged parallel to the long axis.

6. The accessory for a fluid container according to claim 4, characterized in that: The shape formed by the two welding side surfaces is a spindle, an ellipse or a parallelogram.

7. The accessory for a fluid container according to claim 1 or 2, characterized in that: The welding side surface comprises at least two action surfaces spaced apart from each other in the axial direction, and a molten material groove is arranged between two adjacent action surfaces.

8. The accessory for a fluid container according to claim 4 or 5, characterized in that: At least one of the upper and lower outer edges of the connection point between the two welding side surfaces has a chamfer for accommodating the welding liquid; or, the inner wall of the pipeline channel is provided with an anti-falling protrusion.

9. The accessory for a fluid container according to claim 1, characterized in that: The retaining component has a vent hole, and at least two vent holes are provided. The at least two vent holes are evenly arranged around the circumference of the liner mounting component.

10. A container system, characterized in that: It comprises a fluid container, a liner and an accessory for the fluid container as described in any one of claims 1 to 9, wherein the fluid container has a mouth, the inner wall of the mouth has an annular step for supporting the retaining component, the fluid container surrounds the liner, and the vent is connected to the annular space between the fluid container and the liner.

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