Blanking valve of vacuum drying machine

Abstract

The blanking valve comprises a plug, a driving part and a valve body, the valve body is provided with a nesting sleeve connected with a discharging port of the vacuum dryer, the driving part drives the plug to move in a reciprocating mode so as to open and close a sleeve hole of the nesting sleeve, and the plug is provided with a plug sealing plate matched with the nesting end face of the nesting sleeve in a sealing mode. An annular groove is formed in the portion, outside the sleeve hole, of the end face of the embedded sleeve and provided with an annular air bag, and the embedded sleeve is provided with an air inlet channel used for inflating the annular air bag to seal the end face of the embedded sleeve and the plug sealing plate. According to the utility model, the annular air bag and the air inlet channel for inflating the annular air bag are arranged on the fixedly mounted nesting sleeve, so that the risk of damage caused by reciprocating motion of the annular air bag, the air inlet channel and the compressed air input pipe is avoided. Air is input into the annular air bag through the air inlet channel to bulge outwards, so that the nested end face is in soft contact with the plug sealing plate, and the sealing effect of the discharging valve is not affected even if residual materials exist on the contact face.

Description

TECHNICAL FIELD

[0001] The utility model relates to dry equipment technical field, concretely relates to a vacuum drying machine unloading valve. BACKGROUND

[0002] Vacuum drying machine adopts the mode that heating medium is passed into the outer jacket of kettle body, specifically, through motor drive agitator, material does circular motion in the kettle body of vacuum drying machine, and vacuum is extracted in the kettle body to heat and dry the material. After heating and drying, the material is unloaded through the unloading valve arranged on one side.

[0003] Chinese patent CN220514083U discloses a kind of air bag sealing device of dry mixing stirrer discharge port, wherein, unloading valve is connected with movable plug through annular air bag, and annular air bag is deformed by inflation through air pipe, can tightly adhere to discharge end, to improve sealing effect. However, the above-mentioned air bag and air pipe are installed on the reciprocating motion of plug and are easy to be damaged;Further, the manufacture and installation of air bag are more difficult.

[0004] At the same time, although the above-mentioned air bag sealing device is provided with spray head towards discharge port, the cleaning area is limited, and the cleaning effect still needs to be improved. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art, and to provide a vacuum drying machine unloading valve.

[0006] To solve the above technical problems, the technical scheme provided by the utility model is:

[0007] A kind of vacuum drying machine unloading valve, including plug, drive part and valve body, the valve body is provided with the nesting of being connected with the discharge port of vacuum drying machine, the drive part drives plug to reciprocate to open and close the sleeve hole of the nesting, the plug is provided with plug sealing plate that is sealed with the nesting end face of the nesting, annular groove is provided on the nesting end face outside the sleeve hole, annular air bag is installed in the annular groove, air inlet passage is provided on the nesting for inflating annular air bag to seal the nesting end face and plug sealing plate.

[0008] Further, one side of the annular air bag is provided with an opening, the annular air bag is clamped in the annular groove on one side of the opening, and the outlet of the air inlet passage faces the annular air bag.

[0009] Further, air bag clamping part is arranged in the annular groove, the annular air bag is sleeved on the air bag clamping part, and the two sides of the annular air bag in the annular groove are clamped with the two sides of the air bag clamping part.

[0010] Further, the air bag clamping part is a T-shaped section clamping ring arranged between two side walls in the annular groove, and the T-shaped section clamping ring and the bottom of the annular groove form a clamping groove for clamping the air bag.

[0011] Further, the output port of the air inlet channel is located at the top of the air bag clamping part.

[0012] Further, the air inlet channel is arranged in multiple along the circumference of the sleeve hole.

[0013] Further, the air inlet channel comprises a radial hole and an axial hole, the output end of the radial hole is connected with the input end of the axial hole, and the axial hole is arranged through the air bag clamping part.

[0014] Further, the outer edge of the nesting end face of the nesting upper portion is provided with a flange, the flange is provided with a blowing hole for blowing air to the nesting end face, and the blowing hole is arranged along the circumference of the sleeve hole.

[0015] Further, the blowing hole is arranged to be inclined relative to the center line of the nesting end face so that the airflow output by the blowing hole forms a cyclone on the nesting end face.

[0016] Compared with the prior art, the advantages of the present application are that:

[0017] The annular air bag and the air inlet channel for inflating the annular air bag are arranged on the fixedly installed nesting upper portion, so that the risk of damage caused by reciprocating movement of the annular air bag, the air inlet channel and the compressed air input pipe is avoided. The annular air bag is inflated by the air inlet channel to expand outward, so that the nesting end face and the plug sealing plate are in soft contact, even if there is residual material on the contact surface, the sealing effect of the discharge valve is not affected, thereby improving the product quality, reducing the replacement frequency of the nesting, saving the maintenance time and cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structure schematic view of the discharge valve of the vacuum dryer according to the preferred embodiment of the present application;

[0019] Figure 2 is a front view schematic view of the nesting according to the preferred embodiment of the present application;

[0020] Figure 3 is Figure 2 A-A sectional view schematic view of the nesting according to the preferred embodiment of the present application;

[0021] Figure 4 is Figure 3 an enlarged schematic view of A of the nesting according to the preferred embodiment of the present application;

[0022] Figure 5 is Figure 2 a B-B sectional view schematic view of the nesting according to the preferred embodiment of the present application;

[0023] Figure 6 The utility model discloses preferred embodiment discloses the installation schematic drawing of vacuum drying machine under the discharge valve of vacuum drying machine.

[0024] Legend: Specific embodiments

[0025] In order to facilitate understanding the utility model, the following will be combined with the description of the drawings and the preferred embodiment of the utility model more comprehensive, detailed description, but the protection scope of the utility model is not limited to the following specific embodiments.

[0026] As Figures 1-6 The utility model discloses preferred embodiment discloses a kind of discharge valves of vacuum drying machine, including plug 1, driving element 2 and valve body 3, valve body 3 is provided with the nesting 5 being connected with the discharge port 41 of vacuum drying machine 4, specifically, nesting 5 is detachably sealed installation on the inner wall of discharge port 41 by fastener, wear and tear is borne by nesting 5 instead of discharge port 41.Driving element 2 drives plug 1 reciprocating movement to open and close the sleeve hole 51 of nesting 5, to control the discharge of discharge port 41 of vacuum drying machine 4, plug 1 is provided with the plug sealing plate 11 being sealed with the nesting end surface 52 of nesting 5, annular groove 53 is arranged on nesting end surface 52 outside sleeve hole 51, annular air bag 6 is installed in annular groove 53, nesting 5 is provided with the gas inlet passage 8 for inflating annular air bag 6 to seal nesting end surface 52 and plug sealing plate 11, plug sealing ring 12 can also be provided on plug sealing plate 11, gas inlet passage 8 is connected with compressed air input pipe, and then compressed air is transported to gas inlet passage 8.In the present application, by setting annular air bag 6 and the gas inlet passage 8 for inflating annular air bag 6 on fixedly installed nesting 5, the risk of reciprocating movement breakage of annular air bag 6, gas inlet passage 8 and compressed air input pipe is avoided.Air is input to annular air bag 6 through gas inlet passage 8 to make it bulge outward, so that nesting end surface 52 and plug sealing plate 11 are in soft contact, even if there is residual material on the contact surface, it does not affect the sealing effect of the discharge valve, thereby improving product quality, reducing the replacement frequency of nesting, saving maintenance time and cost.

[0027] Referring to Figure 5 In the present embodiment, in order to facilitate the manufacture of annular air bag 6 and the installation in annular air bag 6, one side of annular air bag 6 is provided with opening 61, which is a U-shaped opening structure. Compared with the fully closed structure of the prior art, it is easier to manufacture and demold. Annular air bag 6 is clamped in annular groove 53 on one side of opening 61, and the output port of gas inlet passage 8 faces annular air bag 6, so that the arc part of the U-shaped structure is inflated by blowing air.

[0028] Referring to Figure 3 and 4In the embodiment, in order to facilitate the clamping detachable installation of the annular air bag 6, the air bag clamping part 7 is arranged in the annular groove 53, the air bag clamping part 7 is arranged below the nesting end face 52, the annular air bag 6 is sleeved on the air bag clamping part 7, and the roots of the annular air bag 6 located on both sides of the annular groove 53 are clamped with the air bag clamping part 7. Specifically, the air bag clamping part 7 is a T-shaped cross-section clamping ring arranged between the two side walls of the annular groove 53, the root of the T-shaped cross-section clamping ring is integrally formed with the bottom of the annular groove 53, the T-shaped cross-section clamping ring and the bottom of the annular groove 53 form a clamping groove 71 for clamping the hook structure of the opening 61 of the annular air bag 6, and the clamping effect of the clamping groove 71 prevents the annular air bag 6 from being pulled out of the annular groove 53 when inflated.

[0029] In the embodiment, the output port of the air inlet channel 8 is located at the top of the air bag clamping part 7, which facilitates the inflation of the top of the annular air bag 6 to bulge outward, thereby sealing the nesting end face 52 and the plug sealing plate 11, and ensuring that the forces on both sides of the annular air bag 6 are uniform. At the same time, the air inlet channel 8 is uniformly arranged as multiple along the circumference of the sleeve hole 51, so that the inflation is uniform, and the service life of the air bag is prolonged.

[0030] In the embodiment, in order to facilitate the processing of the air inlet channel 8, the air inlet channel 8 includes a radial hole 81 and an axial hole 82, the radial hole 81 and the axial hole 82 are perpendicular to each other, the output end of the radial hole 81 is connected with the input end of the axial hole 82, and the axial hole 82 passes through the air bag clamping part 7 and can be formed by drilling.

[0031] Referring to Figure 2 and Figure 5 In the embodiment, in order to effectively blow off the material on the nesting end face 52 and avoid the influence of residual material on the sealing effect, a flange 54 is arranged on the outer edge of the nesting end face 52 of the nesting 5, the flange 54 is also annular, the flange 54 is provided with a blowing hole 55 for blowing air to the nesting end face 52, the blowing hole 55 is arranged along the circumference of the sleeve hole 51, and the blowing hole 55 is connected with the air inlet pipeline.

[0032] In the embodiment, the blowing hole 55 is arranged obliquely relative to the center line 56 of the nesting end face 52 to form a cyclone on the nesting end face 52, so that the end face is blown off more cleanly. Specifically, in order to form a cyclone with better blowing effect, three blowing holes 55 are uniformly arranged in the embodiment, and the included angle between one of the blowing holes 55 and the center line 56 of the nesting end face 52 is 15-20 degrees.

[0033] Although the utility model has disclosed as above with preferable embodiments, however, is not used to limit the utility model. Any skilled person in the art, without departing from the utility model technical scheme range, can utilize the above disclosed technical content to make many possible changes and modifications to the utility model technical scheme, or modify as equivalent variation equivalent embodiment. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, which does not deviate from the content of the utility model technical scheme, should fall within the scope of protection of the utility model technical scheme.

Claims

1. A vacuum dryer discharge valve, comprising a plug (1), a driving member (2) and a valve body (3), the valve body (3) is provided with a nest (5) connected with a discharge port (41) of a vacuum dryer (4), the driving member (2) drives the plug (1) to reciprocate to open and close a sleeve hole (51) of the nest (5), the plug (1) is provided with a plug sealing plate (11) sealingly matched with a nest end face (52) of the nest (5), characterized in that, The nesting end face (52) is provided with an annular groove (53) outside the sleeve hole (51), the annular groove (53) is installed with an annular air bag (6), the nesting (5) is provided with an air inlet channel (8) for inflating the annular air bag (6) to seal the nesting end face (52) and the plug sealing plate (11).

2. The vacuum dryer discharge valve of claim 1, wherein, One side of the annular air bag (6) is provided with an opening (61), the annular air bag (6) is clamped in the annular groove (53) on one side of the opening (61), and the outlet of the air inlet channel (8) faces the annular air bag (6).

3. The vacuum dryer valve of claim 2, wherein, The annular groove (53) is provided with an air bag clamping part (7), the annular air bag (6) is sleeved on the air bag clamping part (7), and the annular air bag (6) is clamped on both sides of the air bag clamping part (7) in the annular groove (53).

4. The vacuum dryer valve of claim 3, wherein, The air bag clamping part (7) is a T-shaped cross-section clamping ring provided between the two side walls in the annular groove (53), and the T-shaped cross-section clamping ring and the bottom of the annular groove (53) form a clamping groove (71) for clamping the annular air bag (6).

5. The vacuum dryer valve of claim 3, wherein, The outlet of the air inlet channel (8) is located at the top of the air bag clamping part (7).

6. The vacuum dryer valve of claim 1, wherein, The air inlet channel (8) is provided in multiple along the circumference of the sleeve hole (51).

7. The vacuum dryer valve of claim 3, wherein, The air inlet channel (8) includes a radial hole (81) and an axial hole (82), the outlet end of the radial hole (81) is connected with the input end of the axial hole (82), and the axial hole (82) passes through the air bag clamping part (7).

8. The vacuum dryer discharge valve according to any of claims 1-7, characterized in that, The nesting (5) is provided with a flange (54) outside the outer edge of the nesting end face (52), the flange (54) is provided with a blowing hole (55) for blowing air to the nesting end face (52), and the blowing hole (55) is arranged along the circumference of the sleeve hole (51).

9. The vacuum dryer valve of claim 8, wherein, The blowing hole (55) is inclined relative to the center line (56) of the nesting end face (52) to form a cyclone on the nesting end face (52) by the air flow output by the blowing hole (55).

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