Drying room air pressure adjusting device

Abstract

The utility model discloses a drying room air pressure adjusting device which comprises a drying room (1) used for drying cloth (2), an air pressure difference sensor (3) used for detecting the internal and external pressure difference of an inlet (11) of the drying room (1) is arranged in the middle of the inlet (11) of the drying room (1), a lifting device (4) used for driving the air pressure difference sensor (3) to move up and down is arranged at the inlet (11) of the drying room (1), and an exhaust pipe (5) is arranged on the side, close to an outlet, of the drying room (1). An exhaust fan (51) is arranged on the exhaust pipe (5), and the air pressure difference sensor (3) is electrically connected with the exhaust fan (51) through a controller. The device has the characteristics of timely adjusting the air pressure in the drying room (1) and preventing high-heat and high-humidity waste gas and peculiar smell from polluting the working environment.

Description

Technical Field

[0001] This utility model relates to a drying room, and more particularly to a drying room air pressure regulating device. Background Technology

[0002] In textile processing, drying fabric is a crucial step to remove moisture and obtain dry cloth. The drying method typically involves conveying the fabric from the drying chamber entrance via a conveyor belt. A hot air circulation system heats the air, generated by burners, and distributes it evenly to the fabric, promoting rapid evaporation of moisture. The drying chamber is usually configured with appropriate drying temperatures, hot air speeds, and drying times based on the fabric type, fiber characteristics, and humidity requirements, accelerating the drying process while avoiding damage or distortion of the fabric.

[0003] Current drying ovens generate water vapor during fabric drying, causing changes in air pressure between the oven and the outside. Existing drying ovens lack a device to continuously monitor the pressure difference between the inlet and outlet, making it impossible to adjust the internal air pressure in real time. Consequently, when the internal air pressure exceeds the external air pressure, large amounts of hot, humid exhaust gases and odors generated during fabric drying overflow from the inlet into the external working environment, polluting the surrounding workshop.

[0004] Therefore, existing drying ovens cannot adjust the air pressure in a timely manner, which can easily lead to the discharge of high-temperature and high-humidity exhaust gases and odors from the inlet, polluting the working environment of the operators. Utility Model Content

[0005] The purpose of this invention is to provide a drying chamber air pressure regulating device. This invention features timely adjustment of the internal air pressure of the drying chamber, preventing high-heat, high-humidity exhaust gases and odors from polluting the working environment.

[0006] The technical solution of this utility model is: a drying room air pressure regulating device, including a drying room for drying fabric, an air pressure differential sensor for detecting the pressure difference between the inside and outside of the drying room inlet is provided in the middle of the drying room inlet, a lifting device for driving the air pressure differential sensor to move up and down is provided at the drying room inlet, an exhaust pipe is provided on the side of the drying room near the outlet, an exhaust fan is provided on the exhaust pipe, and the air pressure differential sensor is electrically connected to the exhaust fan via a controller.

[0007] In the aforementioned drying oven air pressure regulating device, the inlet is provided with a protective cover surrounding the air pressure differential sensor. The inside of the protective cover is a protective cavity, and the upper and lower sides of the protective cover are connected to the protective cavity and have through slots for the air pressure differential sensor to move up and down.

[0008] In the aforementioned drying oven air pressure regulating device, the sensing head of the air pressure difference sensor is located above the fabric, and the distance between it and the upper surface of the fabric is 2 to 5 mm.

[0009] In the aforementioned drying oven air pressure regulating device, the lifting device includes an electric cylinder installed outside the drying oven. The output shaft of the electric cylinder is provided with a mounting plate. The air pressure differential sensor is fixed on the mounting plate. Both sides of the mounting plate are provided with sliding strips that are slidably connected to the drying oven. The side wall of the drying oven is provided with sliding grooves corresponding to the sliding strips.

[0010] In the aforementioned drying oven pressure regulating device, the drying oven is equipped with a burner, and the exhaust port of the exhaust pipe is connected to a heat exchange device. The heat exchange device is equipped with a fresh air inlet pipe, an exhaust gas inlet pipe, a hot air outlet pipe, and an exhaust gas outlet pipe. The exhaust port of the exhaust pipe is connected to the exhaust gas inlet pipe, and the hot air outlet pipe is connected to the burner.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention uses a differential pressure sensor to detect the pressure difference between the inside and outside of the drying chamber inlet. If the pressure outside the inlet is less than or equal to the pressure inside the inlet, a signal is sent to the controller. The controller then controls the exhaust fan to increase its speed and the exhaust volume of gas from the drying chamber through the exhaust pipe. This regulates the pressure inside the drying chamber, creating a slightly negative pressure relative to the external environment. This prevents high-heat, high-humidity exhaust gases and odors from overflowing from the inlet into the working environment and causing pollution, thus improving the cleanliness and dryness of the external working environment.

[0013] Therefore, this utility model has the feature of timely adjusting the internal air pressure of the drying chamber, avoiding pollution of the working environment by high-heat and high-humidity exhaust gas and odors. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a structural diagram of the lifting device.

[0016] The labels in the attached diagram are as follows: 1. Drying oven; 11. Inlet; 2. Fabric; 3. Differential pressure sensor; 4. Lifting device; 41. Electric cylinder; 42. Mounting plate; 43. Sliding strip; 5. Exhaust pipe; 51. Exhaust fan; 6. Protective cover; 61. Protective cavity; 62. Through groove; 7. Heat exchange device; 71. Fresh air inlet pipe; 72. Hot air outlet pipe; 73. Waste gas outlet pipe; 8. Burner. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] Example:

[0020] like Figures 1-2 As shown, the drying room air pressure regulating device includes a drying room 1 for drying fabric 2. A differential pressure sensor 3 for detecting the pressure difference between the inside and outside of the drying room 1 is provided in the middle of the inlet 11 of the drying room 1. A lifting device 4 for driving the differential pressure sensor 3 to move up and down is provided at the inlet 11 of the drying room 1. An exhaust pipe 5 is provided on the side of the drying room 1 near the outlet. An exhaust fan 51 is provided on the exhaust pipe 5. The differential pressure sensor 3 is electrically connected to the exhaust fan 51 via a controller.

[0021] This invention uses a differential pressure sensor 3 to detect the pressure difference between the inside and outside of the inlet of the drying chamber 1. If the pressure outside the inlet of the drying chamber 1 is less than or equal to the pressure inside the inlet of the drying chamber 1, a signal is sent to the controller. The controller controls the exhaust fan 51 to increase its speed and increase the amount of gas discharged from the exhaust pipe 5 into the drying chamber 1, thereby adjusting the pressure inside the drying chamber 1. This creates a slightly negative pressure state between the internal space of the drying chamber 1 and the external environment, preventing high-temperature and high-humidity exhaust gas and odors from overflowing from the inlet into the working environment and causing pollution, thus improving the cleanliness and dryness of the external working environment of the drying chamber 1.

[0022] The inlet 11 is equipped with a protective cover 6 surrounding the differential pressure sensor 3. The protective cover 6 is fixedly connected to the drying chamber 1. The interior of the protective cover 6 has a protective cavity 61. The upper and lower sides of the protective cover 6 are connected to the protective cavity 61 and have through slots 62 for the differential pressure sensor 3 to move up and down. The differential pressure sensor 3 passes through the through slots 62 and passes through the protective cover 6 to detect the air pressure. The protective cover 6 is designed to prevent excessive external airflow from impacting the probe of the differential pressure sensor 3 and causing detection errors. When the differential pressure sensor 3 is not working, the lifting device 4 retracts the probe of the differential pressure sensor 3 back into the protective cavity 61 for protection, avoiding damage to the probe of the differential pressure sensor 3 and improving its service life.

[0023] The sensing head of the differential pressure sensor 3 is located above the fabric 2, and the distance between it and the upper surface of the fabric 2 is 2-5 mm. Setting an appropriate detection distance can improve detection accuracy. If the distance between the sensing head of the differential pressure sensor 3 and the fabric surface is too large, it will affect the measurement accuracy. If the distance between the sensing head of the differential pressure sensor 3 and the fabric surface is too small, the exhaust fan 51 may easily cause the fabric surface to touch the probe and damage the probe.

[0024] The lifting device 4 includes an electric cylinder 41 installed outside the drying chamber 1. An installation plate 42 is mounted on the output shaft of the electric cylinder 41. The differential pressure sensor 3 is fixed to the installation plate 42. Sliding strips 43, which are slidably connected to the drying chamber 1, are provided on both sides of the installation plate 42. Sliding grooves, corresponding to the sliding strips 43, are provided on the side wall of the drying chamber 1. The electric cylinder 41 drives the installation plate 42 to move up and down, thereby moving the differential pressure sensor 3 up and down, adjusting the distance between the sensor probe and the fabric surface, and improving detection accuracy. When the installation plate 42 moves up and down, the sliding strips 43 and sliding grooves on both sides restrict the movement position, ensuring the stability and accuracy of the differential pressure sensor 3.

[0025] The drying chamber 1 is equipped with a burner 8, and the exhaust port of the exhaust pipe 5 is connected to a heat exchange device 7. The heat exchange device 7 is equipped with a fresh air inlet pipe 71, an exhaust gas inlet pipe, a hot air outlet pipe 72, and an exhaust gas outlet pipe 73. The exhaust port of the exhaust pipe 5 is connected to the exhaust gas inlet pipe, and the hot air outlet pipe 72 is connected to the burner 8. Fresh air enters the heat exchange device 7 through the fresh air inlet pipe 71. The high-temperature exhaust gas discharged from the drying chamber 1 through the exhaust pipe 5 enters the heat exchange device 7 through the exhaust gas inlet pipe to exchange heat with the fresh air. After heat exchange, the hot fresh air enters the burner 8 through the hot air outlet pipe 72 to provide hot air for combustion, thereby saving fuel and reducing energy costs.

[0026] The parts of this utility model not described in detail are existing technologies and therefore will not be specifically described here.

Claims

1. A drying oven air pressure regulating device, characterized in that: The equipment includes a drying room (1) for drying fabric (2), a differential pressure sensor (3) for detecting the pressure difference between the inside and outside of the drying room (1) is provided in the middle of the inlet (11) of the drying room (1), a lifting device (4) for driving the differential pressure sensor (3) to move up and down is provided at the inlet (11) of the drying room (1), an exhaust pipe (5) is provided on the side of the drying room (1) near the outlet, an exhaust fan (51) is provided on the exhaust pipe (5), and the differential pressure sensor (3) is electrically connected to the exhaust fan (51) via a controller.

2. The drying oven air pressure regulating device according to claim 1, characterized in that: The inlet (11) is provided with a protective cover (6) surrounding the differential pressure sensor (3). The inside of the protective cover (6) is a protective cavity (61). The upper and lower sides of the protective cover (6) are connected to the protective cavity (61) and have through slots (62) for the differential pressure sensor (3) to move up and down.

3. The drying oven air pressure regulating device according to claim 1, characterized in that: The sensing head of the differential pressure sensor (3) is located above the fabric (2), and the distance between it and the upper surface of the fabric (2) is 2 to 5 mm.

4. The drying oven air pressure regulating device according to claim 1, characterized in that: The lifting device (4) includes an electric cylinder (41) installed outside the drying chamber (1). The output shaft of the electric cylinder (41) is provided with a mounting plate (42). The air pressure differential sensor (3) is fixed on the mounting plate (42). Both sides of the mounting plate (42) are provided with sliding strips (43) that are slidably connected to the drying chamber (1). The side wall of the drying chamber (1) is provided with sliding grooves corresponding to the sliding strips (43).

5. The drying oven air pressure regulating device according to claim 1, characterized in that: The drying room (1) is equipped with a burner (8), and the exhaust port of the exhaust pipe (5) is connected to a heat exchange device (7). The heat exchange device (7) is equipped with a fresh air inlet pipe (71), an exhaust gas inlet pipe, a hot air outlet pipe (72) and an exhaust gas outlet pipe (73). The exhaust port of the exhaust pipe (5) is connected to the exhaust gas inlet pipe, and the hot air outlet pipe (72) is connected to the burner (8).

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