CN219184947U - Anti-backflow mechanism and liquid distribution system - Google Patents

Abstract

The utility model relates to a backflow preventing mechanism and a liquid distribution system, wherein the backflow preventing mechanism comprises: the inner core is used for being arranged between two discharge pipelines and is provided with a water inlet, a drainage channel and a water outlet, and the water inlet is communicated with the water outlet through the drainage channel; the baffle, the baffle includes reset portion, rotation portion and blocking portion, rotation portion set up in reset portion with between the blocking portion, rotation portion with the outer wall of delivery port rotates to be connected, reset portion is used for driving blocking portion resets to initial position. In the working process, due to the reset action of the reset part, the blocking part can be driven to reset to the initial position, so that the blocking part covers the water outlet, and the phenomenon that liquid in the downstream discharge pipeline is excessively high in pressure to cause backflow into the upstream pipeline is avoided, so that an upstream valve and other equipment are protected, and the production reliability of a liquid distribution system is improved.

Description

Anti-backflow mechanism and liquid distribution system

Technical Field

The utility model relates to the technical field of pharmaceutical liquid preparation equipment, in particular to an anti-backflow mechanism and a liquid preparation system.

Background

In the pharmaceutical field, the liquid preparation system has the sanitary requirement of equipment pipelines through pure steam sterilization operation, and the breather at the upper part of the tank body of the liquid preparation system, namely, when the air filter performs pure steam sterilization, the condensed water of the pure steam is discharged to the total discharge pipeline through the discharge pipeline and the related valve.

However, in the existing liquid preparation system, the total discharge pipeline is connected with the pipelines of all devices in the factory buildings of pharmaceutical enterprises, and when other pipelines discharge wastewater, the wastewater possibly flows back to the respirator through the pipelines due to overlarge impact force, so that the risk of pollution to equipment elements such as the respirator and other valves is caused.

Disclosure of Invention

Based on the above, it is necessary to provide a backflow prevention mechanism and a liquid distribution system, which can effectively prevent sewage backflow and protect the normal use of upstream valves and related filters.

The technical scheme is as follows: an anti-reflux mechanism, the anti-reflux mechanism comprising: the inner core is used for being arranged between two discharge pipelines and is provided with a water inlet, a drainage channel and a water outlet, and the water inlet is communicated with the water outlet through the drainage channel; the baffle, the baffle includes reset portion, rotation portion and blocking portion, rotation portion set up in reset portion with between the blocking portion, rotation portion with the outer wall of delivery port rotates to be connected, during initial position, blocking portion with the outer wall of delivery port can open and close type block the cooperation, reset portion is used for driving blocking portion resets to initial position.

The anti-backflow mechanism is arranged between two connected discharge pipelines, in the working process, condensed water is generated from an upstream light path, flows to the lower end valve through the discharge pipeline, flows from the water inlet to the water outlet through the drainage channel through the anti-backflow mechanism, and is enabled to rotate due to the gravity effect of the condensed water, the water outlet is opened, and the condensed water is discharged into a downstream discharge pipeline. After the upstream discharge pipeline is free from liquid discharge, the blocking part can be driven to reset to the initial position due to the reset action of the reset part, so that the blocking part covers the water outlet, the phenomenon that liquid in the downstream discharge pipeline is excessively high in pressure to cause backflow into the upstream pipeline is avoided, an upstream valve and other equipment are protected, and the production reliability of a liquid distribution system is improved.

In one embodiment, the backflow preventing mechanism further comprises a fixing pin, a pin joint portion is arranged on the outer wall of the drainage channel, the rotating portion is a rotating hole, and the baffle is in pin joint with the pin joint portion through the fixing pin.

In one embodiment, the number of the pin-joint parts is at least two, the two pin-joint parts are arranged on the outer wall of the discharge pipeline at intervals, and the fixing pin is in pin joint with the two pin-joint parts.

In one embodiment, the reset portion is a weight, and the weight of the weight is greater than the weight of the blocking portion.

In one embodiment, the outer wall of the drainage channel is provided with a limiting part, and the limiting part is in limiting fit with the reset part.

In one embodiment, the inner core is provided with a matching surrounding edge, the matching surrounding edge is arranged in a way that the circumferential outer wall of the water inlet is outwards protruded, and two opposite sides of the matching surrounding edge are respectively used for being in interference fit with the end faces of the two discharge pipelines.

In one embodiment, the backflow preventing structure further comprises a sealing member arranged between the matching surrounding edge and the end face of the discharge pipeline, and the matching surrounding edge is used for being in sealing fit with the end face of the discharge pipeline through the sealing member.

In one embodiment, the number of the sealing elements is more than two, the two sealing elements are respectively arranged on two opposite sides of the matched surrounding edge, and the matched surrounding edge is respectively in sealing fit with the end surfaces of the two discharge pipelines through the two sealing elements.

In one embodiment, the backflow preventing structure further comprises a clamp, the clamp is sleeved on the inner core and the discharge pipeline, and the inner core is in fastening fit with the discharge pipeline through the clamp.

The liquid distribution system comprises a first drain pipe, a second drain pipe and any one of the backflow prevention mechanisms, wherein the backflow prevention mechanisms are arranged between the first drain pipe and the second drain pipe.

According to the liquid distribution system, in the working process, condensed water is generated from an upstream light path, flows to the lower end valve through the discharge pipeline, flows to the water outlet through the water drainage channel from the water inlet through the backflow prevention mechanism, and due to the gravity effect of the condensed water, the blocking part rotates to open the water outlet, and the condensed water is discharged into the downstream discharge pipeline. After the upstream discharge pipeline is free from liquid discharge, the blocking part can be driven to reset to the initial position due to the reset action of the reset part, so that the blocking part covers the water outlet, the phenomenon that liquid in the downstream discharge pipeline is excessively high in pressure to cause backflow into the upstream pipeline is avoided, an upstream valve and other equipment are protected, and the production reliability of a liquid distribution system is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the whole structure of an anti-backflow mechanism according to an embodiment;

FIG. 2 is an exploded view of an anti-reflux mechanism according to one embodiment;

fig. 3 is a schematic structural diagram of a liquid dispensing system according to an embodiment.

Reference numerals illustrate:

100. a backflow prevention mechanism; 110. an inner core, 111 and a water inlet; 112. a drainage channel; 113. a water outlet; 114. a pin joint; 115. a limit part; 116. matching the surrounding edge; 120. a baffle; 121. a reset section; 122. a rotating part; 123. a blocking portion; 130. a fixing pin; 140. a seal; 150. a clamp; 200. a liquid preparation system; 210. a first drain pipe; 220. a second drain pipe; 230. a respirator; 240. a valve; 250. and a storage tank.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 and 2, fig. 1 is a schematic diagram illustrating an overall structure of an anti-backflow mechanism 100 according to an embodiment of the utility model; fig. 2 is an exploded view of the anti-backflow mechanism 100 according to an embodiment of the present utility model, and the anti-backflow mechanism 100 according to an embodiment of the present utility model includes: the core and the baffle 120. The inner core is used for being arranged between two discharge pipelines, the inner core is provided with a water inlet, a drainage channel 112 and a water outlet 113, and the water inlet is communicated with the water outlet 113 through the drainage channel 112. The baffle 120 includes a reset portion 121, a rotating portion 122, and a blocking portion 123, the rotating portion 122 is disposed between the reset portion 121 and the blocking portion 123, and the rotating portion 122 is rotatably connected to an outer wall of the water outlet 113. In the initial position, the blocking portion 123 is in openable and closable blocking engagement with the outer wall of the water outlet 113, and the reset portion 121 is configured to drive the blocking portion 123 to reset to the initial position.

Referring to fig. 3, fig. 3 shows a schematic structural diagram of a liquid dispensing system 200 according to an embodiment of the present utility model, the anti-backflow mechanism 100 is installed between two connected discharge pipes, during operation, condensed water is generated from an upstream light path, flows to a lower end valve 240 through a discharge pipe, flows from a water inlet to a water outlet 113 through a drainage channel 112 through the anti-backflow mechanism 100, and due to gravity of the condensed water, the blocking portion 123 is rotated to open the water outlet 113, and the condensed water is discharged into a downstream discharge pipe. After the upstream discharge pipeline is free from liquid discharge, the blocking part 123 can be driven to reset to the initial position due to the reset action of the reset part 121, so that the blocking part 123 covers the water outlet 113, and the phenomenon that the liquid in the downstream discharge pipeline is excessively high in pressure to cause backflow into the upstream pipeline is avoided, so that the upstream valve 240 and other equipment are protected, and the production reliability of the liquid distribution system 200 is improved.

In one embodiment, referring to fig. 1 and 2, the anti-backflow mechanism 100 further includes a fixing pin 130, the outer wall of the drainage channel 112 is provided with a pin joint 114, the rotating portion 122 is a rotating hole, and the baffle 120 is pinned with the pin joint 114 by the fixing pin 130. In this manner, the fixing pin 130 can provide a rotation axis for the baffle 120 such that the baffle 120 rotates about the fixing pin 130, while also functioning as a connection to connect the baffle 120 with the outer wall of the drain 112, thereby preventing the baffle 120 from being separated from the inner core.

Further, referring to fig. 1 and 2, there are at least two pin-connecting portions 114, and two pin-connecting portions 114 are disposed on the outer wall of the exhaust pipe at intervals, and the fixing pin 130 is in pin connection with the two pin-connecting portions 114. Thus, on one hand, the connection stability between the baffle 120 and the inner core is improved, and on the other hand, the rotation smoothness and stability of the baffle 120 are improved, so that the service life of the backflow preventing mechanism 100 is prolonged.

Alternatively, the resetting mode of the resetting portion 121 to the blocking portion 123 may be spring resetting, magnetic attraction resetting, motor driving resetting, self-weight resetting or other resetting modes.

Specifically, referring to fig. 1 and 2, the reset portion 121 is a weight, and the weight of the weight is greater than that of the blocking portion 123. Thus, when the weight of the condensed water and the blocking portion 123 is greater than that of the reset portion 121, the blocking portion 123 is opened from the water outlet 113, the condensed water is smoothly discharged, and after the condensed water is discharged, the blocking portion 123 rotates back to the original position and closes the water outlet 113 because the weight of the seed matching block is greater than that of the blocking portion 123.

In one embodiment, referring to fig. 2, the outer wall of the drainage channel 112 is provided with a limiting portion 115, and the limiting portion 115 is in limiting fit with the reset portion 121. In this way, the limiting portion 115 can limit the rotation angle of the reset portion 121, and ensure that the blocking portion 123 can be reset normally. Specifically, the maximum rotation angle of the reset portion 121 is 90 °.

In one embodiment, referring to fig. 2, the inner core is provided with a mating peripheral edge 116, the mating peripheral edge 116 being outwardly convex along the circumferential outer wall of the water inlet, opposite sides of the mating peripheral edge 116 being adapted for interference fit with the end surfaces of the two discharge conduits, respectively. Thus, the mating peripheral edge 116 interferes with the upper and lower discharge ducts, which is advantageous for improving the installation stability.

In one embodiment, referring to FIG. 2, the backflow prevention structure further includes a seal 140. A seal 140 is provided between the mating peripheral edge 116 and the end face of the discharge conduit, the mating peripheral edge 116 being adapted for sealing engagement with the end face of the discharge conduit by the seal 140. So, be favorable to improving the sealed effect between inner core and the exhaust duct, avoid weeping gas leakage, guarantee production security.

Alternatively, the seal 140 may be a sealant, gasket ring, or other sealing structure.

Specifically, referring to fig. 2, the sealing member 140 is a rubber sealing ring. Thus, the sealing device is convenient to install, long in service life, strong in reliability and good in sealing effect. The embodiment provides only one specific embodiment of the sealing member 140, but is not limited thereto.

Further, the sealing members 140 are more than two (not shown in the drawings), the two sealing members 140 are respectively disposed on two opposite sides of the mating surrounding edge 116, and the mating surrounding edge 116 is respectively in sealing fit with the end surfaces of the two discharge pipes through the two sealing members 140. Thus, the two sealing members 140 are beneficial to forming sealing with the upper and lower discharge pipelines respectively, and further improving the sealing effect between the inner core and the pipelines, thereby improving the production quality and the production safety.

In one embodiment, referring to fig. 1 and 2, the backflow preventing structure further includes a clip 150, wherein the clip 150 is sleeved on the inner core and the exhaust pipe, and the inner core is tightly matched with the exhaust pipe through the clip 150. In this way, the mounting stability of the core in the discharge pipe is advantageously improved, thereby improving the production reliability of the overall liquid distribution system 200.

In one embodiment, referring to fig. 3, a liquid dispensing system 200, the liquid dispensing system 200 includes a first drain pipe 210, a second drain pipe 220, and the anti-backflow mechanism 100 according to any of the above, wherein the anti-backflow mechanism 100 is disposed between the first drain pipe 210 and the second drain pipe 220.

In the above liquid dispensing system 200, during operation, condensed water is generated from the upstream light path, flows to the lower end valve 240 through the discharge pipeline, and then flows from the water inlet to the water outlet 113 through the drainage channel 112 by the anti-backflow mechanism 100, and due to the gravity of the condensed water, the blocking part 123 rotates, the water outlet 113 is opened, and the condensed water is discharged into the downstream discharge pipeline. After the upstream discharge pipeline is free from liquid discharge, the blocking part 123 can be driven to reset to the initial position due to the reset action of the reset part 121, so that the blocking part 123 covers the water outlet 113, and the phenomenon that the liquid in the downstream discharge pipeline is excessively high in pressure to cause backflow into the upstream pipeline is avoided, so that the upstream valve 240 and other equipment are protected, and the production reliability of the liquid distribution system 200 is improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. An anti-reflux mechanism, comprising:

the inner core is used for being arranged between two discharge pipelines and is provided with a water inlet, a drainage channel and a water outlet, and the water inlet is communicated with the water outlet through the drainage channel;

the baffle, the baffle includes reset portion, rotation portion and blocking portion, rotation portion set up in reset portion with between the blocking portion, rotation portion with the outer wall of delivery port rotates to be connected, during initial position, blocking portion with the outer wall of delivery port can open and close type block the cooperation, reset portion is used for driving blocking portion resets to initial position.

2. The backflow prevention mechanism of claim 1, further comprising a fixing pin, wherein a pin joint portion is provided on an outer wall of the drain passage, wherein the rotating portion is a rotating hole, and wherein the baffle is pin-jointed with the pin joint portion through the fixing pin.

3. The anti-reflux mechanism of claim 2, wherein there are at least two of the pin-engaging portions spaced apart on an outer wall of the discharge conduit, the fixed pin being in pin engagement with the two pin-engaging portions.

4. The backflow prevention mechanism of claim 1, wherein the reset portion is a weight, the weight of the weight being greater than the weight of the blocking portion.

5. The backflow prevention mechanism according to claim 1, wherein the outer wall of the drainage channel is provided with a limiting portion, and the limiting portion is in limiting fit with the reset portion.

6. The backflow prevention mechanism of any one of claims 1-5, wherein the inner core is provided with a mating peripheral edge, the mating peripheral edge being arranged to project outwardly from a circumferential outer wall of the water inlet, opposite sides of the mating peripheral edge being adapted to respectively abut against end surfaces of two discharge conduits.

7. The anti-reflux mechanism of claim 6, further comprising a seal disposed between the mating peripheral edge and an end face of the discharge conduit, the mating peripheral edge being configured for sealing engagement with the end face of the discharge conduit by the seal.

8. The anti-reflux mechanism of claim 7, wherein the number of sealing members is two or more, the two sealing members are respectively arranged on two opposite sides of the mating surrounding edge, and the mating surrounding edge is respectively in sealing fit with the end surfaces of the two discharge pipelines through the two sealing members.

9. The anti-reflux mechanism of claim 7, further comprising a clip, wherein the clip is sleeved over the inner core and the exhaust conduit, and wherein the inner core is in secure engagement with the exhaust conduit via the clip.

10. A liquid dispensing system comprising a first drain pipe, a second drain pipe, and the anti-reflux mechanism of any one of claims 1-9, the anti-reflux mechanism disposed between the first drain pipe and the second drain pipe.

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