Auxiliary drainage device for heat exchange mechanism of refrigeration dryer

Abstract

The utility model provides an auxiliary drainage device for a heat exchange mechanism of a refrigeration dryer, which comprises a water storage tank, a water outlet pipe, a water inlet pipe and a water outlet pipe, the water drainage pipe is arranged at the top of the water storage tank and used for being connected with a corresponding heat exchange mechanism, the lower end of the water drainage pipe penetrates to the inner top of the water storage tank and forms a blocking part, and a plurality of steam blocking channels which are sequentially inclined and folded leftwards and rightwards from top to bottom to form a plurality of steam blocking angles are arranged in the blocking part; the drainage pipe is communicated with the inner cavity of the water storage tank through the plurality of steam blocking channels; the drainage hole channel is lower than the blocking part; the control valve is used for controlling opening and closing of the drainage hole channel. Through liquid level control in the water storage tank and cooperation of the multiple steam blocking channels, on the premise that drainage channels are alternately opened and closed for drainage and operation of the heat exchange mechanism is not affected, it can be avoided that when the drainage channels are closed, condensate water and water vapor in the water storage tank flow back into the heat exchange mechanism, and the water content of outlet air is affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to auxiliary drainage device field, specifically point to a kind of for the auxiliary drainage device of cold dryer heat exchange mechanism. BACKGROUND

[0002] The condensate is generated when the heat exchange mechanism of the cold dryer dries the compressed air, and the condensate flows into the auxiliary drainage device connected by the drainage pipe under the action of gravity. The auxiliary drainage device is used for automatic drainage.

[0003] The principle of the heat exchange mechanism is to set a pre-cooling pipe inside to exchange heat and dry the compressed air flowing in the inner cavity. If the aperture of the drainage pipe is too large or the discharge time of the auxiliary drainage device is too long, it will cause the loss of compressed air in the heat exchange mechanism or insufficient air pressure in the heat exchange mechanism, affecting normal operation. Therefore, the aperture of the drainage pipe needs to be reduced, and the auxiliary drainage device needs to be electronically timed to open and close the drainage.

[0004] However, this setting will cause the condensate and water vapor flowing into the auxiliary drainage device to be sucked back into the inner cavity of the heat exchange mechanism when the compressed air continuously flows in the inner cavity of the heat exchange mechanism for heat exchange and drying during the period when the auxiliary drainage device stops draining, resulting in the problem of high water content in the outlet air of the compressed air.

[0005] To solve the above problems of the prior art, the utility model provides an auxiliary drainage device for the heat exchange mechanism of a cold dryer, which can effectively solve the above problems of the prior art. UTILITY MODEL CONTENTS

[0006] To solve the above problems of the prior art, the utility model provides an auxiliary drainage device for the heat exchange mechanism of a cold dryer, which can effectively solve the above problems of the prior art.

[0007] The technical solution of the utility model is as follows:

[0008] An auxiliary drainage device for the heat exchange mechanism of a cold dryer, comprising:

[0009] A water storage tank is vertically extended and provided with a drainage hole on the circumferential side wall.

[0010] A drainage pipe is provided at the top of the water storage tank and used to connect the corresponding heat exchange mechanism. The lower end of the drainage pipe penetrates into the top of the water storage tank and forms a blocking part. A plurality of gas blocking channels are provided in the blocking part, which are inclined and folded left and right from top to bottom to form a plurality of gas blocking angles. The drainage pipe and the inner cavity of the water storage tank are connected through the plurality of gas blocking channels, and the drainage hole is lower than the blocking part.

[0011] A control valve is arranged to control the opening and closing of the drain channel, and when the water level in the water storage tank is higher than the drain channel, the control valve opens the drain channel, and when the water level in the water storage tank is lower than the drain channel, the control valve closes the drain channel.

[0012] Further, the blocking part is arranged at the top of the water storage tank, and a plurality of front and rear extending steam baffle plates are arranged inside the blocking part, a plurality of the steam baffle plates are distributed in gaps left and right, and a plurality of the steam baffle plates are sequentially arranged from top to bottom, first inclined to the right and then inclined to the left, and a plurality of the steam baffle plates form a plurality of the steam baffle channels.

[0013] Further, the upper end of the steam baffle plate is arranged to form a flow guide part, and the inner wall of the drain pipe is arranged to have a guide part which is protruded to the right and extends downward to correspond to the rightmost steam baffle channel and is connected to the upper end of the rightmost steam baffle plate.

[0014] Further, the control valve is a float ball valve arranged in the water storage tank, the float ball valve comprises a float ball, a connecting frame connected to one end of the float ball and rotatably connected to the inner wall of the water storage tank at the other end, and a plug arranged in the inner end of the drain channel and fixedly connected to the connecting frame, when the water level in the water storage tank is higher than the drain channel, the float ball floats up, the connecting frame swings up to drive the plug to separate from the inner end of the drain channel, and when the water level in the water storage tank is lower than the drain channel, the float ball sinks down, the connecting frame swings down to drive the plug to reset to block the inner end of the drain channel.

[0015] Further, the upper end of the steam baffle plate is arranged to form a flow guide part, and the inner wall of the drain pipe is arranged to have a guide part which is protruded to the right and extends downward to correspond to the rightmost steam baffle channel and is connected to the upper end of the rightmost steam baffle plate.

[0016] Further, the number of the drain channels is two and they are distributed left and right in the vertical middle part of the water storage tank, the number of the float ball valves is two and they correspond to the inner ends of the two drain channels respectively, the two float ball valves are rotationally symmetrical and arranged at intervals along the axial center line of the water storage tank, the right float ball and the connecting frame are arranged to be offset to the rear side, the inner wall of the water storage tank is protruded to have a hinged part, and the other end of the connecting frame is hingedly arranged to the hinged part through a hinge.

[0017] Further, the lower part of the water storage tank is arranged to have a height interval lower than the sedimentation area of the drain channel, and the side wall of the water storage tank is arranged to have a drain channel which communicates with the sedimentation area and is controlled to be opened and closed by a drain valve.

[0018] Therefore, the beneficial effects of the present application are:

[0019] 1. By setting a blocking part with several steam blocking channels at the lower end of the drain pipe, setting the drain hole to be lower than the blocking part, and setting the control valve to control the opening and closing according to the water level in the water storage tank, the water level in the water storage tank is always lower than the blocking part, so when the control valve is closed and the drain hole stops draining, and there is still compressed air flowing through the upper end of the drain pipe to generate siphon effect in the heat exchange mechanism, the drain pipe can avoid sucking the condensed water in the water storage tank back into the heat exchange mechanism. On this basis, part of the water vapor in the water storage pipe needs to pass through the several steam blocking channels in the blocking part when the drain pipe siphons, and in the process, the water vapor will be blocked by the several steam blocking angles and collected into water droplets, then slide down along the steam blocking channel and fall back into the water storage tank. Therefore, through the cooperation of the liquid level control in the water storage tank and the several steam blocking channels, the condensed water and water vapor in the water storage tank can be prevented from flowing back to the heat exchange mechanism when the drain hole is closed, which affects the water content of the outlet gas.

[0020] 2. By setting the steam blocking plate to be folded multiple times from top to bottom, the number of steam blocking angles of the steam blocking channel is increased, and the blocking effect of the steam blocking channel on the water vapor flowing downward in the water storage tank under the siphon force is improved. By setting the upper end of the steam blocking plate to be rounded to reduce the water residue on the upper end when the condensed water flows downward into the water storage tank, and by adding a guide part, the condensed water is prevented from accumulating between the upper end of the rightmost steam blocking plate and the inner wall of the blocking part when it flows downward into the water storage tank, reducing the amount of condensed water residue in the drain pipe caused by the setting of the several steam blocking plates, avoiding the large impact of the residual water in the drain pipe on the water content of the outlet gas of the heat exchange mechanism, and improving the practicality of the several steam blocking plates.

[0021] 3. The height distance of the upper end of the drain hole is lower than the lower end of the blocking part, and the lower end of the float ball is lower than the axis of the drain hole when the plug is plugged into the inner end of the drain hole. Therefore, when the water level in the water storage tank rises above the axis of the drain hole, the float ball begins to float and drives the plug to swing gradually away from the inner end of the drain hole to start draining, at this time the drain pipe is still continuously draining condensed water downward, until the water level in the water storage tank drops below the axis of the drain hole, the float ball sinks and drives the plug to swing back to plug the inner end of the drain hole to stop draining, to ensure that the water level of the condensed water in the water storage tank is always lower than the upper end of the drain hole. At the same time, the upper end distance of the drain hole is lower than the lower end of the blocking part, which further widens the distance between the lower end of the blocking part and the water level of the condensed water, thereby preventing a large amount of water vapor from the water surface of the condensed water from being siphoned upward and being difficult to be blocked by the several steam blocking plates when the drain pipe siphons, so that the drain pipe only siphons a small amount of water vapor at the top of the water storage tank, which can be stably blocked by the several steam blocking plates, improving the blocking stability and effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural diagram of the heat exchange mechanism and auxiliary drainage device of the cold dryer.

[0023] Figure 2 is a sectional view of the heat exchange mechanism of the cold dryer.

[0024] Figure 3 is a structural schematic view of the auxiliary drainage device.

[0025] Figure 4 is a sectional view of the auxiliary drainage device. Figure 3

[0026] Figure 5 is a sectional view of the auxiliary drainage device. Figure 4

[0027] Figure 6 is a structural schematic view of the float ball valve.

[0028] Figure 7 is a sectional view of the float ball valve. Figure 4 DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of those skilled in the art, the structure of the utility model will be further described in detail in combination with the drawings:

[0030] Referring to Figures 1-7 , an auxiliary drainage device for a heat exchange mechanism of a cold dryer, comprising:

[0031] a water storage tank 1 vertically extending and provided with a drainage hole 11 through the circumferential side wall;

[0032] a drainage pipe 2 provided at the top of the water storage tank 1 and used for connecting a corresponding heat exchange mechanism 5, the lower end of the drainage pipe 2 penetrating into the inner top of the water storage tank 1 and forming a blocking part 21, the blocking part 21 being provided with a plurality of steam blocking channels 22 sequentially tilting and folding left and right from top to bottom to form a plurality of steam blocking angles 221, the drainage pipe 2 and the inner cavity of the water storage tank 1 being communicated through the plurality of steam blocking channels 22, and the drainage hole 11 being lower than the blocking part 21;

[0033] a control valve used for controlling the opening and closing of the drainage hole 11, the control valve opening the drainage hole 11 when the water level in the water storage tank 1 is higher than the drainage hole 11, and the control valve closing the drainage hole 11 when the water level in the water storage tank 1 is lower than the drainage hole 11.

[0034] ​​​The structure is arranged by arranging the blocking part 21 with several steam blocking channels 22 at the lower end of the drain pipe 2, arranging the drain hole 11 to be lower than the blocking part 21, and arranging the control valve to control the opening and closing according to the water level in the water storage tank 1. The water level in the water storage tank 1 is always lower than the blocking part 21, so that when the control valve is closed, the drain hole 11 stops draining, and there is still compressed air flowing through the upper end of the drain pipe 2 to generate a siphon effect in the heat exchange mechanism 5, the drain pipe 2 can avoid sucking the condensed water in the water storage tank 1 back to the heat exchange mechanism 5. On this basis, part of the water vapor in the water storage pipe needs to pass through the several steam blocking channels 22 in the blocking part 21 when it is siphoned by the drain pipe 2. During the process, the water vapor is blocked by the several steam blocking angles 221 and gathered into water droplets, and then falls back into the water storage tank 1 along the steam blocking channel 22. Therefore, by cooperating the liquid level control in the water storage tank 1 and the several steam blocking channels 22, the condensed water and water vapor in the water storage tank 1 can be prevented from flowing back to the heat exchange mechanism 5 when the drain hole 11 is closed, which affects the water content of the air outlet of the heat exchange mechanism 5.

[0035] In order to improve the steam blocking effect of the steam blocking channel 22, the blocking part 21 is located at the top of the water storage tank 1 and is internally separated by several front and rear extending steam blocking plates 23. The several steam blocking plates 23 are distributed in gaps side by side left and right. The several steam blocking plates 23 are arranged from top to bottom by first tilting and folding to the right and then tilting and folding to the left in sequence. The several steam blocking plates 23 form the several steam blocking channels 22 therebetween. Specifically, each steam blocking plate 23 is folded four times from top to bottom. Therefore, by arranging the steam blocking plate 23 to be folded multiple times from top to bottom, the number of steam blocking angles 221 of the steam blocking channel 22 is increased, and the blocking effect of the steam blocking channel 22 on the water vapor flowing downward under the siphon force in the water storage tank 1 is improved.

[0036] In order to avoid a large amount of condensed water and water vapor remaining on the upper end of the several steam blocking plates 23, the upper end of the several steam blocking plates 23 is rounded to form a flow guiding part 231. The inner wall of the drain pipe 2 is protruded on the right side to form a guide part 24 extending downward and corresponding to the rightmost steam blocking channel 22 and connecting the upper end of the rightmost steam blocking plate 23. Therefore, by rounding the upper end of the steam blocking plate 23 to reduce the water remaining on the upper end when the condensed water flows downward into the water storage tank 1, and by adding the guide part 24, the condensed water flowing downward into the water storage tank 1 is prevented from accumulating between the upper end of the rightmost steam blocking plate 23 and the inner wall of the blocking part 21. The amount of condensed water remaining in the drain pipe 2 is reduced due to the arrangement of the several steam blocking plates 23, which avoids the influence of the remaining water in the drain pipe 2 on the water content of the air outlet of the heat exchange mechanism 5, and improves the practicability of the several steam blocking plates 23.

[0037] In order to improve the stability of the control valve controlling the opening and closing of the drainage channel 11, the control valve is a float ball valve 3 arranged in the water storage tank 1, the float ball valve 3 comprises a float ball 31, a connecting frame 32 connected to one end of the float ball 31 and rotatably connected to the inner wall of the water storage tank 1 at the other end, and a plug 33 arranged in the inner end of the drainage channel 11 and fixedly connected to the connecting frame 32. Specifically, the plug 33 can be a silica gel plug or a rubber plug adapted to the inner end of the drainage channel 11. When the water level in the water storage tank 1 is higher than the drainage channel 11, the float ball 31 floats up, the connecting frame 32 swings to drive the plug 33 to separate from the inner end of the drainage channel 11. When the water level in the water storage tank 1 is lower than the drainage channel 11, the float ball 31 sinks, the connecting frame 32 swings to drive the plug 33 to reset to block the inner end of the drainage channel 11. Thus, the opening and closing of the drainage channel 11 can be realized by the effect of the water level in the water storage tank 1 on the float ball 31, without adding other detection control devices to achieve the effect of the opening and closing of the drainage channel 11 with the change of the water level in the water storage tank 1, and the pure mechanical control of the float ball valve 3 is more stable and reliable.

[0038] In order to further reduce the amount of water vapor upwardly sucked by the drain pipe 2 during siphoning, the upper end height interval of the drainage channel 11 is lower than the lower end of the blocking part 21, and the lower end height of the float ball 31 is lower than the axis of the drainage channel 11 when the plug 33 blocks the inner end of the drainage channel 11. Thus, when the water level in the water storage tank 1 rises above the axis of the drainage channel 11, the float ball 31 starts to float up and drives the plug 33 to swing and gradually separate from the inner end of the drainage channel 11 to start drainage. At this time, the drain pipe 2 is still continuously draining condensed water downward, and after the water level in the water storage tank 1 drops below the axis of the drainage channel 11, the float ball 31 sinks and drives the plug 33 to swing and reset to block the inner end of the drainage channel 11 to stop drainage, so as to ensure that the water level of the condensed water in the water storage tank 1 is always lower than the upper end of the drainage channel 11. At the same time, the upper end interval of the drainage channel 11 is lower than the lower end of the blocking part 21, which further increases the distance between the lower end of the blocking part 21 and the water level of the condensed water, thereby avoiding that a large amount of water vapor on the water surface of the condensed water is upwardly siphoned and difficult to be blocked by the plurality of baffle plates 23 when the drain pipe 2 is siphoned, so that only a small amount of water vapor on the top of the water storage tank 1 is siphoned by the drain pipe 2, which can be stably blocked by the plurality of baffle plates 23, improving the blocking stability and effect.

[0039] In order to improve the control effect of the float ball valve 3, the number of the drain holes 11 is two and is distributed in the vertical middle part of the water storage tank 1, the number of the float ball valve 3 is two and corresponds to the inner end of the two drain holes 11 respectively, the two float ball valves 3 are rotationally symmetrical along the axial center line of the water storage tank 1 and are arranged at intervals, the float ball 31 and the connecting frame 32 on the right side are arranged offset to the rear side, the inner wall of the water storage tank 1 is provided with a hinge part 12, and the other end of the connecting frame 32 is arranged in up-down hinged connection with the hinge part 12 through a hinge 34. Therefore, through the offset arrangement of the float ball 31 and the connecting frame 32, the specifications of the two float ball valves 3 are sufficient and do not affect each other when swinging up and down, and the control stability of the float ball valve 3 on the drain hole 11 is ensured.

[0040] Because the compressed air contains dust impurities, the water storage tank 1 and the drain pipe 2 also produce pipeline rust, so that the condensed water in the water storage tank 1 usually contains a certain amount of precipitated impurities. Therefore, in order to avoid the long-term accumulation of precipitated impurities affecting the drainage work of the drain hole 11, the inner lower part of the water storage tank 1 is arranged to have a height interval lower than the precipitated area 13 of the drain hole 11, and the side wall of the water storage tank 1 is provided with a blowdown hole 14 communicating with the precipitated area 13 and controlled by a blowdown valve 4. Specifically, the blowdown valve 4 can be a manual valve or an automatic valve. Therefore, by arranging the precipitated area 13 below the drain hole 11, the precipitated impurities in the condensed water can be precipitated downward to the precipitated area 13, and the drain hole 11 only discharges the relatively clean condensed water above the precipitated area 13, so as to avoid the precipitated impurities from entering the drain hole 11 and causing blockage. At the same time, the precipitated impurities accumulated in the precipitated area 13 can be cleaned regularly through the addition of the blowdown hole 14.

[0041] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An auxiliary drain device for a heat exchanger of a cold dryer, characterized by, The utility model relates to a water storage tank, which comprises: a water storage tank (1) vertically extending and provided with a drainage hole (11) through a circumferential side wall; a drain pipe (2) arranged at the top of the water storage tank (1) and used for connecting a corresponding heat exchange mechanism (5), the lower end of the drain pipe (2) penetrates into the top of the water storage tank (1) and forms a blocking part (21), the blocking part (21) is internally provided with a plurality of steam blocking channels (22) sequentially inclined and folded left and right from top to bottom to form a plurality of steam blocking angles (221), the inner cavity of the drain pipe (2) and the water storage tank (1) are communicated through the steam blocking channels (22), and the drainage hole (11) is lower than the blocking part (21); a control valve used for controlling the opening and closing of the drainage hole (11), when the water level in the water storage tank (1) is higher than the drainage hole (11), the control valve opens the drainage hole (11), and when the water level in the water storage tank (1) is lower than the drainage hole (11), the control valve closes the drainage hole (11).

2. An auxiliary drain for a heat exchanger of a refrigerating machine according to claim 1, wherein The blocking part (21) is located at the top of the water storage tank (1) and internally provided with a plurality of steam blocking plates (23) extending front and back, a plurality of the steam blocking plates (23) are distributed in gaps left and right, a plurality of the steam blocking plates (23) are sequentially arranged from top to bottom by being first inclined and folded to the right and then inclined and folded to the left, and a plurality of the steam blocking channels (22) are formed between a plurality of the steam blocking plates (23).

3. An auxiliary drain for a heat exchanger of a cold dryer as claimed in claim 2, characterized in that, The upper end of a plurality of the steam blocking plates (23) is provided with a rounded corner to form a flow guide part (231), and the inner wall of the drain pipe (2) is provided with a guide part (24) on the right side and protruding downward to correspond to the rightmost steam blocking channel (22) and connect the upper end of the rightmost steam blocking plate (23).

4. An auxiliary drain for a heat exchanging mechanism of a cold dryer according to claim 1, wherein The control valve is a floating ball valve (3) arranged in the water storage tank (1), the floating ball valve (3) comprises a floating ball (31), a connecting frame (32) connected to one end of the floating ball (31) and rotatably connected to the inner wall of the water storage tank (1) at the other end, and a plug (33) arranged in the inner end of the drainage hole (11) and fixedly connected to the connecting frame (32), when the water level in the water storage tank (1) is higher than the drainage hole (11), the floating ball (31) floats up, the connecting frame (32) swings up to drive the plug (33) to separate from the inner end of the drainage hole (11), when the water level in the water storage tank (1) is lower than the drainage hole (11), the floating ball (31) sinks down, the connecting frame (32) swings down to drive the plug (33) to reset and block the inner end of the drainage hole (11).

5. An auxiliary drain for a heat exchanger of a cold dryer as claimed in claim 4, characterized in that, The upper end height spacing of the drainage hole (11) is lower than the lower end of the blocking part (21), and when the plug (33) blocks the inner end of the drainage hole (11), the lower end height of the floating ball (31) is lower than the axis of the drainage hole (11).

6. An auxiliary drain for a heat exchanging mechanism of a cold dryer according to claim 4, wherein The number of the drain holes (11) is two and is distributed in the vertical middle part of the water storage tank (1), the number of the float ball valves (3) is two and corresponds to the inner end of the two drain holes (11), the two float ball valves (3) are rotationally symmetrical along the axial middle line of the water storage tank (1) and are arranged at intervals, the right float ball (31) and the connecting frame (32) are arranged offset to the rear side, the inner wall of the water storage tank (1) is provided with a hinge part (12), the other end of the connecting frame (32) is arranged in up-down hinged connection with the hinge part (12) through a hinge part (34).

7. An auxiliary drain for a heat exchanging mechanism of a cold dryer according to claim 1, wherein The inner lower part of the water storage tank (1) is arranged to have a height interval lower than the sedimentation area (13) of the drain hole (11), and the side wall of the water storage tank (1) is provided with a drain hole (14) communicating with the sedimentation area (13) and controlled by a blowdown valve (4).

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