Defoaming device applied to vibrating screen and vibrating screen

Abstract

The utility model relates to the technical field of food processing, and discloses a defoaming device applied to a vibrating screen and the vibrating screen, the defoaming device comprises a flow dividing mechanism, a connecting mechanism and a defoaming device, the flow dividing mechanism comprises a main body and a flow dividing plate, the main body is used for being connected to a discharge port of the vibrating screen, and a flow channel communicated with the discharge port is arranged in the main body; the splitter plate is arranged in the runner and is connected with the main body; the runner is divided into a first runner and a second runner which are arranged up and down by the splitter plate; the connecting mechanism is movably connected with the main body, so that the main body can do reciprocating telescopic motion along the vertical direction relative to the connecting mechanism; the foam breaker is connected with the connecting mechanism, and a foam inlet of the foam breaker is communicated with the first flow channel. And a mixture of foam and filter residues discharged from the discharge port of the vibrating screen is shunted in the main body, so that the foam is conveniently treated. The main body can be driven by the vibrating screen to vibrate up and down relative to the connecting mechanism, so that the defoaming device can be well suitable for treating foam generated in the screening process of the vibrating screen.

Description

Technical Field

[0001] The utility model relates to the technical field of food processing, in particular to a defoaming device applied to a vibrating screen and the vibrating screen. Background Art

[0002] Plant protein beverages contain high protein content, so they tend to produce a lot of foam when separated by a vibrating screen. The accumulation of foam on the vibrating screen will affect the separation effect of the vibrating screen and increase the difficulty of manual foam removal, which in turn affects production efficiency and product quality. After the accumulated foam is discharged with the filter residue, the residue receiving bucket will quickly fill up and overflow, requiring frequent replacement of the residue receiving bucket. Moreover, the foam can be used as liquid after liquefaction, and discharging the foam directly into the residue receiving bucket will cause waste of liquid.

[0003] At present, the foam problem is generally solved by defoaming agents, manual foaming or physical defoaming devices. Among them, chemical defoaming agents have the advantages of flexible use and fast defoaming. However, for the use environment of the vibrating screen, the defoaming agent will flow quickly with the feed liquid and needs to be continuously added. The usage amount is very easy to exceed the standard and will affect the product flavor, which is not in line with the concept of healthy food production. Manual foaming is time-consuming and labor-intensive, and the effect is not good. Physical defoaming devices have been widely used in sewage treatment and food processing, and are currently mainly installed above the liquid storage tank. However, due to the complexity of the vibrating screen materials, including feed liquid, filter residue, and foam, the defoamer cannot be used directly on the screen surface to remove the foam, resulting in the existing defoaming device being difficult to apply to the treatment of the foam generated during the separation of the vibrating screen. Utility Model Content

[0004] The utility model aims to provide a defoaming device applied to a vibrating screen and the vibrating screen, so as to process the foam generated in the screening process of the vibrating screen.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] One aspect of the utility model is to provide a defoaming device applied to a vibrating screen, comprising:

[0007] The flow dividing mechanism comprises a main body and a flow dividing plate, wherein the main body is used to be connected to the discharge port of the vibrating screen, a flow channel connected to the discharge port is arranged in the main body, the flow dividing plate is arranged in the flow channel and connected to the main body, and the flow dividing plate divides the flow channel into a first flow channel and a second flow channel arranged up and down;

[0008] A connecting mechanism, movably connected to the main body, so that the main body can reciprocate and telescopically move in a vertical direction relative to the connecting mechanism;

[0009] A defoamer is connected to the connecting mechanism, and a foam inlet of the defoamer is communicated with the first flow channel.

[0010] In some embodiments, the diversion mechanism also includes an adjustment plate, one end of which is connected to one end of the diversion plate located at the entrance of the flow channel, and the angle between the adjustment plate and the diversion plate is an obtuse angle and is adjustable; the other end of the adjustment plate extends out of the flow channel.

[0011] In some embodiments, the adjustment plate is detachably connected to the diverter plate.

[0012] In some embodiments, the terminal outlet of the first flow channel along the material flow direction is arranged upward, and the terminal outlet of the second flow channel along the material flow direction is arranged downward.

[0013] In some embodiments, the connection mechanism comprises:

[0014] A first connecting member connected to the defoamer, wherein a third flow channel communicating with the foam inlet is provided inside the first connecting member; an avoidance groove is provided outside the first connecting member, and the avoidance groove is extended along the circumference of the first connecting member;

[0015] The second connecting member is arranged at the notch of the avoidance groove and connected to the first connecting member. The second connecting member is provided with a limiting groove. The main body passes through the limiting groove and is inserted into the avoidance groove, so that the first flow channel is connected with the third flow channel.

[0016] In some embodiments, the second connecting member includes a first sealing ring and a second sealing ring, the first sealing ring and the second sealing ring are arranged opposite to each other and are respectively fixed on two groove walls of the avoidance groove, and the space between the first sealing ring and the second sealing ring forms the limiting groove.

[0017] In some embodiments, the defoaming device further includes a liquid collecting container, wherein the liquid collecting container has a liquid collecting cavity, and the liquid collecting cavity is connected to the liquid outlet of the defoamer.

[0018] In some embodiments, the defoamer is disposed in the liquid collecting chamber, and the bottom of the liquid collecting container is provided with a discharge port connected to the liquid collecting chamber, and the discharge port is connected to a guide pipe for connecting to the vibrating screen.

[0019] In some embodiments, the bottom of the liquid collection chamber is tilted downward toward the discharge port.

[0020] Another aspect of the utility model is to provide a vibrating screen, including a vibrating screen body and a defoaming device applied to the vibrating screen as described above, wherein the vibrating screen body is provided with a discharge port, a main body of the defoaming device is connected to the discharge port, and a flow channel in the main body is connected to the discharge port.

[0021] Compared with the prior art, the defoaming device and the vibrating screen used in the embodiment of the utility model have the following beneficial effects:

[0022] The defoaming device of the utility model embodiment includes a diverter mechanism, a connecting mechanism and a defoamer. The main body of the diverter mechanism is connected to the discharge port of the vibrating screen, and the diverter mechanism is connected to the defoamer through the connecting mechanism. A diverter plate is arranged in the main body, and the flow channel in the main body is divided into a first flow channel and a second flow channel arranged up and down by the diverter plate; the first flow channel is connected to the foam inlet of the defoamer. When the vibrating screen is working, after the material falls into the vibrating screen, the material liquid falls through the screen, and the filter residue and foam move along the circumference of the screen on the screen surface. When passing through the discharge port, they are discharged from the discharge port to the flow channel in the main body under the blocking action of the slag plate in the vibrating screen, wherein the lighter foam enters the first flow channel on the upper side, and is discharged into the defoamer through the first flow channel, and the foam is defoamed by the defoamer; the heavier filter residue enters the second flow channel on the lower side, and is discharged through the second flow channel. Therefore, the mixture of foam and filter residue discharged through the discharge port of the vibrating screen generates a diversion in the main body of the diverter mechanism, thereby separating the foam from the filter residue, which is convenient for processing the foam.

[0023] In addition, the connecting mechanism in the present application is movably connected to the main body, so that the main body can be telescopically moved relative to the connecting mechanism. Since the main body is connected to the discharge port of the vibrating screen, when the vibrating screen generates vibration during operation, the main body can be driven by the vibrating screen to vibrate up and down relative to the connecting mechanism without affecting the defoaming treatment work of the connecting mechanism and the defoamer, so that the defoaming device of the present application can be well used to treat the foam generated during the screening process of the vibrating screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the defoaming device described in the embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of the adjustment plate and the vibrating screen body in the embodiment of the utility model;

[0026] Figure 3 yes Figure 2 A schematic diagram of the main view;

[0027] Figure 4 yes Figure 2 Schematic diagram of top view;

[0028] Figure 5 yes Figure 2 Schematic side view of .

[0029] Numbers in the figure:

[0030] 1. Diverter mechanism; 11. Main body; 111. Flow channel; 1111. First flow channel; 1112. Second flow channel; 12. Diverter plate; 13. Adjustment plate; 2. Connecting mechanism; 21. First connecting piece; 211. Third flow channel; 212. Avoidance groove; 22. Second connecting piece; 221. First sealing ring; 222. Second sealing ring; 223. Limiting groove; 3. Defoamer; 31. Foam inlet; 32. Liquid outlet; 4. Liquid collecting container; 41. Liquid collecting chamber; 411. Discharge port; 412. Guide pipe; 5. Vibrating screen body; 51. Discharge port; 52. Slag retaining plate; 53. Screen. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] See also Figure 1-Figure 5As shown, the embodiment of the utility model provides a defoaming device applied to a vibrating screen, which is used for defoaming treatment of the vibrating screen. The defoaming device includes a diverter mechanism 1, a connecting mechanism 2 and a defoamer 3. The diverter mechanism 1 includes a main body 11 and a diverter plate 12. The main body 11 is used to be connected to the discharge port 51 of the vibrating screen, and the discharge port 51 is the outlet of the vibrating screen for discharging the mixture of foam and filter residue. A flow channel 111 connected to the discharge port 51 is provided in the main body 11. The diverter plate 12 is arranged in the flow channel 111 and connected to the main body 11. The diverter plate 12 divides the flow channel 111 into a first flow channel 1111 and a second flow channel 1112 arranged up and down; the connecting mechanism 2 is movably connected to the main body 11, so that the main body 11 can reciprocate and telescopically move in the vertical direction relative to the connecting mechanism 2; the defoamer 3 is connected to the connecting mechanism 2, and the foam inlet 31 of the defoamer 3 is connected to the first flow channel 1111.

[0035] When the vibrating screen is working, after the material falls into the vibrating screen, the material liquid falls through the screen 53, and the filter residue and foam move circumferentially along the screen 53 on the screen surface. When passing through the discharge port 51, they are blocked by the slag plate 52 in the vibrating screen and discharged from the discharge port 51 to the flow channel 111 in the main body 11, wherein the lighter foam enters the first flow channel 1111 on the upper side, and is discharged into the defoamer 3 through the first flow channel 1111, and the foam is defoamed by the defoamer 3; the heavier filter residue enters the second flow channel 1112 on the lower side, and is discharged through the second flow channel 1112. Therefore, the mixture of foam and filter residue discharged through the vibrating screen discharge port 51 generates a diversion in the main body 11 of the diversion mechanism 1, thereby separating the foam from the filter residue, and facilitating the processing of the foam.

[0036] In addition, the connecting mechanism 2 in the present application is movably connected to the main body 11, so that the main body 11 can move telescopically relative to the connecting mechanism 2. Since the main body 11 is connected to the discharge port 51 of the vibrating screen, when the vibrating screen generates vibration, the main body 11 can be driven by the vibrating screen to vibrate up and down relative to the connecting mechanism 2 without affecting the defoaming treatment of the connecting mechanism 2 and the defoamer 3, so that the defoaming device of the present application can be well applied to the treatment of foam generated during the screening process of the vibrating screen.

[0037] See also Figure 1As shown, in some embodiments, the interior of the main body 11 is hollow to form a flow channel 111. The main body 11 includes a horizontal portion and a vertical portion, one end of the horizontal portion is connected to the discharge port 51 of the vibrating screen, and the two can be welded and fixed, or bolted. The other end of the horizontal portion is connected to the vertical portion, and the two can be integrally formed. The vertical portion is vertically arranged, and the horizontal portion is horizontally arranged. The diverter plate 12 is horizontally arranged in the horizontal portion and connected to the vertical portion through the horizontal portion. The diverter plate 12 divides the flow channel 111 in the main body 11 into an L-shaped first flow channel 1111 and an L-shaped second flow channel 1112. The first flow channel 1111 is used for the flow of foam, the inlet of the first flow channel 1111 is connected to the discharge port 51 of the vibrating screen, and the outlet of the first flow channel 1111 is connected to the foam inlet 31 of the defoamer 3. The second flow channel 1112 is used for the flow of filter residue, the inlet of the second flow channel 1112 is connected to the discharge port 51 of the vibrating screen, and the outlet of the second flow channel 1112 is a filter residue outlet. A filter residue collection container may be provided at the outlet of the second flow channel 1112 to facilitate centralized treatment of the filter residue. The diverter plate 12 is in the form of a flat plate, and the diverter plate 12 is fixed to the main body 11 by welding or by fasteners such as bolts and screws.

[0038] In some embodiments, the terminal outlet of the first flow channel 1111 along the material flow direction is arranged upward, so that the lighter foam can float up and be discharged under the vibration of the vibrating screen; the terminal outlet of the second flow channel 1112 along the material flow direction is arranged downward, so that the heavier filter residue can be discharged under its own gravity.

[0039] It should be noted that the flow power of the foam in the first flow channel 1111 and the flow power of the filter residue in the second flow channel 1112 are both derived from the vibration force generated by the vibrating screen. Among them, the flow power of the filter residue in the vertical part of the second flow channel 1112 also comes from the gravity of the filter residue itself.

[0040] See also Figure 1-Figure 5As shown, in some embodiments, the diverter mechanism 1 further includes an adjusting plate 13, one end of which is connected to one end of the diverter plate 12 at the entrance of the flow channel 111, and the angle between the adjusting plate 13 and the diverter plate 12 is an obtuse angle and adjustable; the other end of the adjusting plate 13 extends out of the flow channel 111. By adjusting the angle between the adjusting plate 13 and the diverter plate 12, it is convenient to adjust the setting height of the adjusting plate 13. When the main body 11 of the diverter mechanism 1 is connected to the discharge port 51 of the vibrating screen, the end of the adjusting plate 13 away from the diverter plate 12 passes through the discharge port 51 and extends into the interior of the vibrating screen. The height position of the adjusting plate 13 can be adjusted according to the ratio of foam to filter residue. When the filter residue content is small, the adjusting plate 13 is adjusted downward so that more foam can enter the first flow channel 1111 and be defoamed by the defoamer 3; when the filter residue content is high, the adjusting plate 13 is adjusted upward to prevent the filter residue from entering the first flow channel 1111 and affecting the defoaming work of the defoamer 3. The adjustment plate 13 is detachably connected to the diverter plate 12. The angle between the adjustment plate 13 and the diverter plate 12 can be adjusted by disassembling and then reinstalling the adjustment plate 13, thereby adjusting the setting height of the adjustment plate 13. The adjustment plate 13 and the diverter plate 12 can be connected by bolts. When adjusting the angle between the adjustment plate 13 and the diverter plate 12, first loosen the connecting bolts between the adjustment plate 13 and the diverter plate 12, and after adjusting the position of the adjustment plate 13 to the right position, tighten the bolts to fix the adjustment plate 13 and the diverter plate 12.

[0041] See also Figure 1 As shown, in some embodiments, the connection mechanism 2 includes a first connection member 21 and a second connection member 22, the first connection member 21 is connected to the defoamer 3, and a third flow channel 211 communicating with the foam inlet 31 is provided in the first connection member 21; the second connection member 22 is connected to the first connection member 21, and the second connection member 22 is provided with a limiting groove 223, the main body 11 is movably inserted in the limiting groove 223, and the first flow channel 1111 is communicated with the third flow channel 211, and the first flow channel 1111 is communicated with the foam inlet 31 of the defoamer 3 through the third flow channel 211. The first connection member 21 is detachably connected to the defoamer 3, which is convenient for disassembly and assembly. The first connection member 21 plays a role in connecting the defoamer 3 and the second connection member 22. The main body 11 is movably inserted in the limiting groove 223, which can not only make the main body 11 vibrate up and down relative to the connection structure, but also play a limiting role on the main body 11, so as to prevent the main body 11 from shaking left and right significantly relative to the connection structure. The limiting groove 223 is a through groove.

[0042] See also Figure 1As shown, in some embodiments, the first connecting member 21 is provided with an avoidance groove 212, and the avoidance groove 212 is extended along the circumference of the first connecting member 21; the second connecting member 22 is arranged at the notch of the avoidance groove 212, and the main body 11 is inserted into the avoidance groove 212 through the limiting groove 223. The avoidance groove 212 can provide an installation space for the second connecting member 22 and provide a movable space for the main body 11. The notch of the avoidance groove 212 and the notch of the limiting groove 223 are both arranged downward to facilitate the insertion of the main body 11, specifically, the vertical part of the main body 11 is inserted into the limiting groove 223. In some embodiments, the vertical part of the main body 11 is in the shape of a circular tube, the internal space is the first flow channel 1111, and the tube wall is inserted into the limiting groove 223. The horizontal cross-sections of the avoidance groove 212 and the limiting groove 223 are both in the shape of a circular ring. The first connecting member 21 is in the shape of a circular tube, and the space inside the tube forms a third flow channel 211 . A flange is provided on the outer peripheral side of the first connecting member 21 , and the avoidance groove 212 is opened on the flange. The outer wall of the tube of the first connecting member 21 forms a groove wall of the avoidance groove 212 .

[0043] See also Figure 1 As shown, in some embodiments, the second connecting member 22 includes a first sealing ring 221 and a second sealing ring 222, the first sealing ring 221 and the second sealing ring 222 are arranged opposite to each other and are respectively fixed on the two groove walls of the avoidance groove 212, and the space between the first sealing ring 221 and the second sealing ring 222 forms a limiting groove 223. The first sealing ring 221 and the second sealing ring 222 are coaxially arranged. The first sealing ring 221 and the second sealing ring 222 form a limiting groove 223 to limit the main body 11, so as to prevent the main body 11 from shaking left and right in the limiting groove 223. The first sealing ring 221 and the second sealing ring 222 are both O-rings, which can prevent the main body 11 from directly colliding with the second connecting member 22 to generate noise and wear. An installation groove can be set on the groove wall of the avoidance groove 212, and the first sealing ring 221 and the second sealing ring 222 are respectively embedded in the installation groove.

[0044] See also Figure 1 As shown, in some embodiments, the defoaming device also includes a liquid collecting container 4, and the liquid collecting container 4 has a liquid collecting chamber 41, and the liquid collecting chamber 41 is connected to the liquid outlet 32 ​​of the defoamer 3. The liquid discharged after the defoamer 3 processes the foam is collected by the liquid collecting chamber 41. The liquid collecting container 4 can be a can-shaped container. In some embodiments, the defoamer 3 is arranged in the liquid collecting chamber 41, so that the liquid discharged through the defoamer 3 directly enters the liquid collecting chamber 41 to avoid the liquid from splashing and overflowing. In other embodiments, the defoamer 3 can also be arranged outside the liquid collecting chamber 41, and it is only necessary to connect the liquid outlet 32 ​​of the defoamer 3 with the liquid collecting chamber 41, and the discharged liquid can enter the liquid collecting chamber 41.

[0045] See also Figure 1As shown, in some embodiments, a discharge port 411 connected to the liquid collecting chamber 41 is provided at the bottom of the liquid collecting container 4, so as to facilitate the discharge of the liquid collected in the liquid collecting chamber 41. A guide pipe 412 for connecting to a vibrating screen is connected to the discharge port 411, and the liquid in the liquid collecting chamber 41 can be discharged into the vibrating screen through the guide pipe 412 for recycling. The guide pipe 412 is a hose. The bottom of the liquid collecting chamber 41 is tilted downward toward the discharge port 411, so that the liquid in the liquid collecting chamber 41 is automatically discharged to the discharge port 411 under the action of gravity.

[0046] In some embodiments, the main body 11 and the discharge port 51 of the vibrating screen, and the connection structure and the defoamer 3 are all connected by bolts, which is convenient for disassembly and cleaning and avoids cleaning dead corners.

[0047] It should be noted that the defoamer 3 is a prior art, and can be defoamed by high-speed shearing or ultrasonic defoaming, which will not be described in detail in the present utility model.

[0048] See also Figure 2-Figure 5 As shown, the utility model also provides a vibrating screen, including a vibrating screen body 5 and a defoaming device applied to the vibrating screen as described above, the vibrating screen body 5 is provided with a discharge port 51, the main body 11 of the defoaming device is connected to the discharge port 51, and the flow channel 111 in the main body 11 is connected to the discharge port 51. After the material in the vibrating screen body 5 is screened, the mixture of foam and filter residue falls on the screen surface of the screen 53, and is discharged into the main body 11 through the discharge port 51, and is diverted in the main body 11 to separate the foam and the filter residue, and the foam is processed by the defoamer 3 of the defoaming device. A slag blocking plate 52 is arranged at the discharge port 51 in the vibrating screen body 5, and the foam and the filter residue enter the flow channel 111 of the main body 11 under the blocking action of the slag blocking plate 52.

[0049] The vibrating screen of the utility model can separate foam from filter residue, which is convenient for processing foam and recovering filter residue separately, and can avoid discharging foam and filter residue into the filter residue collection bucket at the same time, which will cause the filter residue collection bucket to be quickly filled with foam due to too much foam, affecting production continuity and causing liquid loss; and avoids directly drawing away foam on the screen surface, and the filter residue contained in the foam enters the defoamer 3 together, which will cause damage to the defoamer 3. The vibrating screen of the utility model can process most of the foam, facilitate the process, and reduce liquid loss.

[0050] It should be noted that the vibration screen body 5 has a screen 53, a motor and other components, which can realize the basic screening function of the vibration screen, and the utility model will not be described in detail.

[0051] The working process of the utility model is:

[0052] When the vibrating screen is working, after the material enters the vibrating screen and is screened, the material liquid directly falls through the screen 53, and the filter residue rotates along the inner wall of the vibrating screen, and is stopped by the slag blocking plate 52 at the discharge port 51 and enters the discharge port 51. After being diverted by the diverter plate 12, the foam enters the first flow channel 1111, and the filter residue enters the second flow channel 1112. The foam entering the first flow channel 1111 is sucked into the defoamer 3 for treatment, and the filter residue entering the second flow channel 1112 can be discharged into the filter residue collection bucket for centralized treatment.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A defoaming device for a vibrating screen, characterized in that: include: The flow dividing mechanism comprises a main body and a flow dividing plate, wherein the main body is used to be connected to the discharge port of the vibrating screen, a flow channel connected to the discharge port is arranged in the main body, the flow dividing plate is arranged in the flow channel and connected to the main body, and the flow dividing plate divides the flow channel into a first flow channel and a second flow channel arranged up and down; A connecting mechanism, movably connected to the main body, so that the main body can reciprocate and telescope in a vertical direction relative to the connecting mechanism; A defoamer is connected to the connecting mechanism, and a foam inlet of the defoamer is communicated with the first flow channel.

2. The defoaming device for vibrating screen according to claim 1, characterized in that: The diversion mechanism also includes an adjustment plate, one end of which is connected to one end of the diversion plate located at the entrance of the flow channel, and the angle between the adjustment plate and the diversion plate is an obtuse angle and is adjustable; the other end of the adjustment plate extends out of the flow channel.

3. The defoaming device for vibrating screen according to claim 2, characterized in that: The regulating plate is detachably connected to the diverter plate.

4. The defoaming device for vibrating screen according to claim 1, characterized in that: The terminal outlet of the first flow channel along the material flow direction is arranged upward, and the terminal outlet of the second flow channel along the material flow direction is arranged downward.

5. The defoaming device for vibrating screen according to claim 1, characterized in that: The connecting mechanism comprises: A first connecting member connected to the defoamer, wherein a third flow channel communicating with the foam inlet is provided inside the first connecting member; an avoidance groove is provided outside the first connecting member, and the avoidance groove is extended along the circumference of the first connecting member; The second connecting member is arranged at the notch of the avoidance groove and connected to the first connecting member. The second connecting member is provided with a limiting groove. The main body passes through the limiting groove and is inserted into the avoidance groove, so that the first flow channel is connected with the third flow channel.

6. The defoaming device for vibrating screen according to claim 5, characterized in that: The second connecting member includes a first sealing ring and a second sealing ring. The first sealing ring and the second sealing ring are arranged opposite to each other and are respectively fixed on two groove walls of the avoidance groove. The space between the first sealing ring and the second sealing ring forms the limiting groove.

7. The defoaming device for vibrating screen according to claim 1, characterized in that: The defoaming device also includes a liquid collecting container, wherein the liquid collecting container has a liquid collecting cavity, and the liquid collecting cavity is connected to the liquid outlet of the defoamer.

8. The defoaming device for vibrating screen according to claim 7, characterized in that: The defoamer is arranged in the liquid collecting chamber, and the bottom of the liquid collecting container is provided with a discharge port communicating with the liquid collecting chamber, and the discharge port is connected with a guide pipe for connecting to the vibrating screen.

9. The defoaming device for vibrating screen according to claim 8, characterized in that: The bottom of the liquid collecting chamber is tilted downward toward the discharge port.

10. A vibrating screen, characterized in that: It comprises a vibrating screen body and a defoaming device applied to the vibrating screen as described in any one of claims 1 to 9, wherein the vibrating screen body is provided with a discharge port, a main body of the defoaming device is connected to the discharge port, and a flow channel in the main body is connected to the discharge port.

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