TWI723775B - Box type drying and venting device - Google Patents

Abstract

A box-type drying and venting device includes a pipe seat forming at least one air collecting hole facing downward, a plurality of vent pipes fixed on the pipe seat and extending in the up and down direction, and a pipe seat extending upward from the pipe seat and communicating with the at least one The exhaust pipe of the air collecting hole. Each air duct forms an air inlet facing downward, and at least one opening located above the air inlet and communicating with the air inlet. The exhaust pipe can discharge the air from the at least one air-collecting hole upwards out of the material layer, thereby increasing the air fluidity so that the lower layer material can be dried, and at the same time sending the lower layer air out of the material layer, balancing the pressure, and avoiding increasing the burden or triggering of the blower alarm. The hot air at the bottom of the material layer can also enter through the air inlets of the vent pipes, and is transported to the higher part of the material layer through the at least one opening to improve the drying uniformity and drying effect.

Description

Box type drying and venting device

The invention relates to a venting device, in particular to a box-type drying venting device used in a material oven.

Referring to Figure 1, the box-type drying method of sludge is to directly put a large piece of sludge into the material oven 11 as shown in Figure 1, and then use the blower 12 to send hot air to the bottom of the material oven 11, and the hot air enters the material oven 11 After the bottom, it will naturally pass through the gap between the material layer 13 (formed by sludge accumulation) and flow upward to the top of the material layer 13. Through the aforementioned process, the moisture can be taken away to achieve the effect of drying the sludge, and The moisture passing through the top of the material layer 13 can also be drawn to other places, or sent to the material oven 11 again after being dehumidified and heated. This box-type drying method is easy to operate and low in price, so it has a high degree of acceptance in the market, and in addition to sludge, it can also be used to dry chemical raw materials or crops and other materials, but this drying method requires materials to be used. It is blocky to ensure sufficient air permeability. That is to say, when the material in the material oven 11 is thin or non-lumpy due to high moisture content or unreliable dehydration, the hot air sent by the blower 12 will be difficult to penetrate Penetrate the material layer, so that only the bottom material can be dried, which is difficult or even impossible to dry. The airtightness prevents the airflow from flowing upwards and accumulates in the lower layer, which not only prevents the material in the lower layer from drying, but also causes the air and heat to accumulate in the lower layer of the material, causing the operating burden of the blower 12 and the temperature of the related thermal system to increase, and even triggering an alarm And downtime, these problems limit the scope of application of the box drying method, so there is still room for improvement.

Therefore, the purpose of the present invention is to provide a box-type drying and venting device that can improve the air permeability and drying effect of the material oven.

Therefore, the box-type drying and venting device of the present invention includes a pipe seat forming at least one air collecting hole facing downward, a plurality of vent pipes fixed on the pipe seat and extending in the up-down direction, and a pipe seat extending upward and communicating with each other. The exhaust pipe of the at least one air collecting hole. Each air duct forms an air inlet facing downward, and at least one opening located above the air inlet and communicating with the air inlet.

The effect of the present invention is that when the blower blows hot air into the material oven, the air in the material layer can enter the tube seat through the at least one air collecting hole facing downward from the tube seat, and then discharge the material layer upward through the exhaust pipe. Thereby reducing the wind resistance of the lower air passing through the material layer, avoiding increasing the burden of the blower or triggering the alarm, and also has the function of increasing the air flow. On the other hand, the hot air sent to the bottom of the material layer can also enter through the air inlets of the vent pipes and be transported to the higher part of the material layer through the at least one opening to dry the upper material and improve the drying process. With uniformity and drying effect, the present invention can be applied to non-blocky material layers, and has a larger scope of application.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

Referring to Figure 2, a first embodiment of the box-type drying and venting device 2 of the present invention includes a tube base 21, three vent pipes 22 fixed to the tube base 21 and extending in the up-down direction at both ends, and a tube base An exhaust pipe 23 extending upwards and communicating with the pipe seat 21, and an exhaust valve 24 connected to the exhaust pipe 23 and controllably pumping air upward. The tube base 21 has a connector 211 and three air collecting tubes 212 with one end connected to the connector 211 and extending horizontally. The connector 211 is a joint used to connect a plurality of different pipelines. In the first embodiment, the connector 211 is a four-way pipe joint, but it is not limited to this. Each air collecting pipe 212 has a plurality of downward air collecting holes 213 formed on the outer peripheral surface, but it is also possible to form only one downward air collecting hole 213, and the number is not limited to this. Each vent tube 22 has an air inlet 220 facing downwards at the bottom end, and a plurality of openings 221 communicating with the air inlet 220 are formed on the outer peripheral surface near the top end, and the openings 221 face the radial direction of the air vent tube 22 The direction is opened, and the number can also be one. The lower end of the exhaust pipe 23 is connected with the connector 211, and the upper end is connected with the exhaust valve 24. Although the base 21, the vent pipes 22, and the exhaust pipe 23 are combined in a grouping manner, in fact, they can be welded, or integrally formed after mold opening, or other connection methods can be adopted as required, and they can even be arranged independently ( Not connected). In addition, the tube seat 21 may also be a seat body with holes or other shapes, and is not limited to the state where a plurality of hollow tubes are connected. The exhaust valve 24 can be controlled to be opened or closed. When the exhaust valve 24 is opened, it exhausts upward, and when it is closed, it stops exhausting upward.

Referring to Figure 2, Figure 3, and Figure 4, the first embodiment is generally set in a material oven 3, the vent pipes 22 are placed on the baffle 31 with a plurality of holes in the material oven 3, and these The air inlet 220 is aligned with the hole of the baffle 31, and the exhaust pipe 23 and the exhaust valve 24 pass through the top of the material layer 4. The exhaust valve 24 can detect the above and below the material layer 4 (ie, the baffle 31), the exhaust valve 24 is closed when the pressure difference is less than a set value. When the blower inputs hot air for drying, the hot air first enters the bottom of the material layer 4 through the baffle 31, and then enters the air ducts 22 from the air inlets 220, and then radiates outward from the openings 221 The hot air can be directed to the higher part of the material layer 4 to assist the drying there, so that the height of the material layer 4 that is hard to reach by the general hot air can be dried. On the other hand, after passing through the bottom of the material layer 4, the hot air enters the air collecting pipes 212 through the air collecting holes 213, passes upwards through the air exhaust pipe 23, and is discharged from the top of the exhaust valve 24, so that the air flow can be discharged from the top of the exhaust valve 24. It is sent to the top of the material layer 4 to balance the pressure above and below the material layer 4 to prevent the blower from being overburdened or triggering an alarm due to the pressure difference. In addition, the air flow driven by the exhaust valve 24 can also improve the air fluidity and make The hot air is easier to flow upwards, and the air permeability of the material layer 4 is improved. It should be noted that the length of the vent pipes 22 can also be changed according to requirements. When multiple box-type drying and venting devices 2 are installed in the same material oven 3, the box-type drying and venting devices 2 can be Staggered or juxtaposed in the horizontal direction, and the lengths of the air ducts 22 may not be equal to guide the hot air to different heights of the material layer 4. When the pressure difference is less than the preset value set by the user (or built-in), the exhaust valve 24 is closed and no longer exhausts. At this time, the hot air is only sent into the material layer 4 through the vent pipes 22. Medium (there are other hot gases that penetrate the material layer 4 and flow upwards).

Referring to FIGS. 5 and 6, the first embodiment can also be changed according to actual needs. For example, in FIG. 5, the connector 211 is a five-way pipe joint, and has four air collecting pipes 212 and four vent pipes 22, each Two adjacent air collecting pipes 212 are separated by 90 degrees. Compared with the aspect of FIG. 2, the box-type drying and ventilating device of FIG. 5 can obtain a denser drying effect. The connector 211 in FIG. 6 is a three-way pipe joint, and has two air collecting pipes 212 and two vent pipes 22. Of course, in addition to the aforementioned changes, it can also be other quantitative changes to correspond to different dryings. Scope requirements, high versatility.

Referring to FIG. 7, it is a second embodiment of the box-type drying and venting device 2 of the present invention. The second embodiment is substantially the same as the first embodiment, except that: the tube base 21 has three connectors 211, the connector 211 in the middle is a five-way pipe joint, and the connectors 211 on both sides are three-way pipe joints. Any two adjacent connectors 211 are respectively connected to two ends of an air collecting pipe 212, and the other ends of each connector 211 are respectively connected to two air collecting pipes 212, so the number of the air collecting pipes 212 is eight. . The number of the air pipes 22 is six, and they are respectively arranged on the six air collecting pipes 212 whose one end is not connected with the connectors 211. The exhaust pipe 23 is arranged on the connector 211 in the middle. In addition, the top of the exhaust pipe 23 is not provided with an exhaust valve 24, but a removable cap 25 is installed. When the pressure on the upper and lower parts of the material layer is to be balanced, the cap 25 is removed to The hot air can enter the air collecting pipes 212, and then be discharged from the top of the exhaust pipe 23 to the top of the material. When the pressure is balanced, the pipe cap 25 is then covered to close the exhaust pipe 23. Of course, The top end of the exhaust pipe 23 can also be equipped with the exhaust valve 24 as in the first embodiment. In the second embodiment, the connectors 211 and the air collecting pipes 212 are assembled to extend along the length direction, thereby extending the drying range of the same height. Of course, this structure can be achieved by connecting the connectors on both sides 211 is replaced with a four-way pipe joint to continue to expand outwards and improve versatility.

Referring to FIG. 8, it is a third embodiment of the box-type drying and venting device of the present invention. The third embodiment is substantially the same as the first embodiment, except that: the tube base 21 has five connectors 211 The number of the air collecting pipes 212 is twelve, and the connector 211 located in the middle is connected to the other four connectors 211 through the four air collecting pipes 212 respectively. The number of the air pipes 22 is four, and each air pipe 22 is connected to two of the air collecting pipes 212 in a horizontal direction. The third embodiment uses more air collecting pipes 212, so the number of the air collecting holes 213 is also increased, which can increase the intake air volume and airflow guiding range, and provide another structural configuration. It should be noted that the exhaust pipe 23 may also form a plurality of through holes 231 along the height direction on the outer peripheral surface, so that while the airflow flows upward along the exhaust pipe 23, it can also escape from the through holes 231. , And dry materials of different heights. Of course, the design of the exhaust duct 23 with the through holes 231 can also be applied to the first embodiment and the second embodiment, and it is not limited thereto.

When multiple box-type drying and venting devices 2 are used at the same time, these box-type drying and venting devices 2 can be the aspects of the first embodiment, the second embodiment, and the third embodiment respectively, that is, different aspects can be mixed and matched , In order to meet the needs of actual drying operations.

In summary, the downward air inlets 220 allow the hot air from the bottom layer to enter upwards, and after entering the air ducts 22, they rise to a higher position, and finally are sent out radially from the openings 221. Dry the surrounding materials, so that the hot air can be transmitted to a higher height for drying, so it can correspond to non-frame materials or non-lumpy materials, or even sparse materials, with high versatility. The exhaust valve 24 enables After being collected, the hot air flows into the upper space of the material through the exhaust pipe 23, balances the air pressure above and below the material layer 4, reduces the burden on the blower, and promotes the upward flow of airflow to increase air permeability, so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

2: Box-type drying and venting device 21: Tube seat 211: Connector 212: Air Collector 213: Gathering Hole 22: Snorkel 220: air inlet 221: Hole 23: Exhaust pipe 231: Through Hole 24: Exhaust valve 25: pipe cap 3: Material oven 31: bezel 4: Material layer

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a schematic diagram illustrating a material oven used to treat sludge; Figure 2 is a perspective view illustrating a first embodiment of the box-type drying and venting device of the present invention; Figure 3 is a perspective view illustrating the air flow direction of Figure 2; Figure 4 is a schematic diagram illustrating the state of the first embodiment set in a material oven; 5 and 6 are schematic diagrams illustrating other aspects of the first embodiment; Figure 7 is a perspective view illustrating a second embodiment of the box-type drying and venting device of the present invention; and Fig. 8 is a perspective view illustrating a third embodiment of the box-type drying and ventilation device of the present invention.

2: Box-type drying and venting device

21: Tube seat

211: Connector

212: Air Collector

213: Gathering Hole

22: Snorkel

220: air inlet

221: Hole

23: Exhaust pipe

24: Exhaust valve

Claims (7)

A box-type drying and venting device, including: A tube seat, forming at least one air collecting hole facing downward A plurality of vent pipes are fixed on the tube base and extend in the up and down direction, each vent pipe forms an air inlet facing downward, and at least one opening located above the air inlet and communicating with the air inlet; and An exhaust pipe extends upward from the pipe seat and communicates with the at least one air collecting hole. The box-type drying and venting device according to claim 1, wherein the pipe base includes a connector, and a plurality of air collecting pipes connected to the connector and extending horizontally, and each air collecting pipe is formed on the outer circumference of the air collecting pipe facing downwards. The at least one air collecting hole. The box-type drying and venting device according to claim 1, wherein the pipe base includes a plurality of connectors, and a plurality of air collecting pipes connected to the connectors and extending horizontally, and a wind collecting pipe passes between every two adjacent connectors The pipes are connected. The box-type drying and venting device according to claim 1, further comprising an exhaust valve arranged on the top of the exhaust pipe. The exhaust valve can be controlled to open and close. When it is opened, it exhausts upward, and when it is closed, it stops exhausting upward. gas. The box-type drying and venting device according to claim 4, wherein the exhaust valve can detect a pressure difference, and is closed when the pressure difference is less than a set value. The box-type drying and venting device according to claim 1, further comprising a cap that is detachably arranged on the top of the exhaust pipe to close the exhaust pipe. The box-type drying and venting device according to claim 1, wherein at least one through hole is formed on the outer peripheral surface of the exhaust pipe.

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