A paraformaldehyde storage silo

By setting up through channels, air inlets, and a fan system in the paraformaldehyde storage silo for multi-point ventilation, the problems of temperature difference and ventilation during paraformaldehyde storage are solved, achieving a stable and safe storage effect.

CN224428675UActive Publication Date: 2026-06-30ANHUI HEHONG CHEM CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANHUI HEHONG CHEM CO LTD
Filing Date
2025-07-11
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing technologies, when solid paraformaldehyde is stored in a container, it is difficult to ventilate effectively, resulting in a large temperature difference between the inside and outside, which affects storage stability and may accelerate decomposition due to temperature differences.

Method used

A paraformaldehyde storage silo was designed. By setting a channel and air inlet at the top of the storage silo, a low-temperature dry air is delivered by an air intake fan. The air is ventilated at multiple points through the air inlet pipe and air distribution hole, and the exhaust gas is treated through the air outlet channel and airflow channel. Combined with filter sponge and water-absorbing cloth to filter dust and moisture, the air quality is ensured.

Benefits of technology

It achieves stability and safety in paraformaldehyde storage, reduces the decomposition rate, avoids the effects of temperature differences and gas pollution, and ensures a clean storage environment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a paraformaldehyde storage silo, comprising a storage silo with a through groove in the center of its top side. A plurality of air inlets are formed on the inner circumference of the through groove, and an air inlet pipe is fixedly connected to each inlet. The end of the air inlet pipe extends into the storage silo, and a plurality of air distribution holes are formed on the outer circumference of the air inlet pipe. The air inlet pipe is inclined downwards towards the storage silo, and an air injection device is provided at the top of the through groove. This utility model relates to the technical field of paraformaldehyde storage. This paraformaldehyde storage silo, in use, can deliver dry, low-temperature air into the through groove. The multiple air inlets and air distribution holes provide multi-point drying and ventilation for the paraformaldehyde in the storage silo. The low temperature reduces the formaldehyde decomposition rate, and the multi-point ventilation effectively reduces the formaldehyde gas in the container, thereby ensuring the storage stability of the paraformaldehyde.
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Description

Technical Field

[0001] This utility model relates to the technical field of paraformaldehyde storage, and in particular to a paraformaldehyde storage silo. Background Technology

[0002] Paraformaldehyde needs to be stored in a sealed container, and there are certain requirements for the storage temperature. In order to ensure the safe storage of paraformaldehyde and prevent its deterioration, solid paraformaldehyde also needs to be ventilated during storage to prevent the accumulation of formaldehyde gas.

[0003] In the existing technology, when storing solid paraformaldehyde in a container, the paraformaldehyde generally accumulates inside the container. At this time, it is difficult to ventilate the inside of the accumulated paraformaldehyde, resulting in a temperature difference between the inside and outside of the paraformaldehyde pile. This can easily lead to the internal temperature of the paraformaldehyde pile being higher than the external temperature, causing the formaldehyde inside the pile to decompose more quickly and affecting the storage of paraformaldehyde. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a paraformaldehyde storage silo in order to solve the technical problems mentioned in the background.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A paraformaldehyde storage silo includes a storage silo. A through groove is formed in the middle of the top side of the storage silo. A number of air inlets are formed on the inner periphery of the through groove. An air inlet pipe is fixedly connected to the air inlet. The end of the air inlet pipe extends into the storage silo. A number of air distribution holes are formed on the outer periphery of the air inlet pipe. The air inlet pipe is inclined downwards towards the storage silo. An air injection device is provided at the top of the through groove. An air exhaust device is provided at the top of the storage silo.

[0007] In a preferred embodiment, the present invention can be further configured such that: the air intake component includes an air intake fan, the air intake fan is fixedly installed at the top of the through groove, and a sealing ring is fixedly connected to the outer peripheral side of the air intake fan, the outer peripheral side of the sealing ring is fixedly connected to the inner peripheral side of the through groove.

[0008] In a preferred embodiment, the present invention can be further configured such that: each air inlet pipe has a constricted end near the through groove, and a slide cylinder is slidably connected to the end of the air inlet pipe near the through groove. An air inlet hole is opened on the outer periphery of the slide cylinder at the position of the air inlet pipe opening. A return spring is fixedly connected to the inner end side wall of the air inlet pipe, and the end of the return spring is fixedly connected to the outer periphery of the slide cylinder.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the exhaust component includes an exhaust channel, the exhaust channel is opened on the inner top side wall of the storage compartment, and an airflow channel communicating with the exhaust channel is opened on the inner circumferential side of the through groove, the airflow channel extends to the bottom of the inner side wall of the through groove and communicates with the through groove.

[0010] In a preferred embodiment, the present invention can be further configured such that: a baffle is fixedly connected to the bottom of the through groove, the baffle is sealed at the bottom of the through groove, and the baffle is located above the outlet of the airflow channel.

[0011] In a preferred embodiment, the present invention can be further configured such that: a filter sponge is fixedly connected to the inner circumference of the through groove, and an absorbent cloth is fixedly connected to the inner circumference of the filter sponge.

[0012] In summary, this utility model has at least one of the following beneficial technical effects:

[0013] 1. This type of paraformaldehyde storage silo can deliver dry and low-temperature air into the channel during use. By using several air inlets and air distribution holes, the paraformaldehyde in the storage silo can be dried and ventilated at multiple points. The low temperature reduces the decomposition rate of formaldehyde, and the multi-point ventilation can effectively reduce the formaldehyde gas in the container, thereby ensuring the storage stability of paraformaldehyde.

[0014] 2. This type of paraformaldehyde storage silo uses an air intake fan to deliver air into a channel. After the air pressure in the channel increases, it will push the slide cylinder to move. When the slide cylinder moves, the air inlet on the slide cylinder will move with it. The initial position of the air inlet is close to the inner circumference of the air inlet pipe inlet, so as to block it and prevent air leakage. After the air inlet moves, it will be connected to the inside of the air inlet pipe. Then, the air will be output through the air distribution hole, thereby ventilating the paraformaldehyde pile.

[0015] 3. In this paraformaldehyde storage silo, when ventilation is in operation, air enters the silo through the air distribution holes, increasing the air pressure inside the silo. Subsequently, the air enters the airflow channel from the air outlet at the top of the silo and is then transported downwards to the bottom of the channel. The exhaust gas is treated using a corresponding container to prevent formaldehyde gas from directly entering the air and polluting the air, thereby affecting the surrounding environment.

[0016] 4. The paraformaldehyde storage silo is equipped with a filter sponge to filter dust from the outside air and a water-absorbing cloth to absorb moisture from the transported air, so as to avoid excessive humidity in the storage silo, which would cause the paraformaldehyde to clump together and affect the storage of paraformaldehyde. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the storage compartment of this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of the air inlet pipe of this utility model.

[0021] Figure 4 This is a schematic diagram of the air outlet channel structure of this utility model.

[0022] In the diagram, 1. Storage compartment; 2. Through slot; 3. Air inlet; 4. Air inlet pipe; 5. Air distribution port; 6. Air injection component; 7. Air exhaust component; 8. Air intake fan; 9. Sealing ring; 10. Slide cylinder; 11. Air inlet; 12. Return spring; 13. Air outlet channel; 14. Airflow channel; 15. Baffle; 16. Filter sponge; 17. Absorbent cloth. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings. Example

[0024] Reference Figures 1-4 The present invention discloses a paraformaldehyde storage silo, comprising a storage silo 1, a through groove 2 formed in the middle of the top side of the storage silo 1, a number of air inlets 3 formed on the inner circumference of the through groove 2, an air inlet pipe 4 fixedly connected in the air inlet pipe 3, the end of the air inlet pipe 4 extending into the storage silo 1, a number of air distribution holes 5 formed on the outer circumference of the air inlet pipe 4, the air inlet pipe 4 being inclined downward toward the storage silo 1, an air injection component 6 being provided at the top of the through groove 2, and an air exhaust component 7 being provided at the top of the storage silo 1.

[0025] A baffle 15 is fixedly connected to the bottom of the channel 2. The baffle 15 is sealed at the bottom of the channel 2 and is located above the outlet of the airflow channel 14.

[0026] In this embodiment, reference Figure 1 and Figure 2A through hole is opened at the top of storage chamber 1 and a corresponding sealing plug is installed to facilitate the placement of paraformaldehyde into storage chamber 1. The through groove 2 is used for ventilation. An outlet is set on the bottom side wall of storage chamber 1 and a corresponding sealing cap is set on the outlet to remove paraformaldehyde.

[0027] External air is drawn in using the air injection device 6. The air is cooled to prevent the air temperature from being too high and accelerating the decomposition of paraformaldehyde. The air then enters the channel 2 and is transported to the air inlet pipe 4 at the air inlet position. The air is then dispersed into the storage chamber 1 using several air distribution holes 5, allowing for multi-point ventilation inside the paraformaldehyde pile. This prevents a large temperature difference between the inside and outside of the paraformaldehyde pile from affecting subsequent storage. The baffle 15 is used to seal the bottom of the channel 2 to prevent air from being directly discharged and affecting the ventilation of the paraformaldehyde.

[0028] In a further preferred embodiment of this utility model, such as Figures 2-4 As shown, the air intake component includes an air intake fan 8, which is fixedly installed at the top of the through groove 2, and a sealing ring 9 is fixedly connected to the outer periphery of the air intake fan 8. The outer periphery of the sealing ring 9 is fixedly connected to the inner periphery of the through groove 2.

[0029] Each air inlet pipe 4 is designed with a constricted end near the through groove 2, and a slide cylinder 10 is slidably connected to the end of the air inlet pipe 4 near the through groove 2. An air inlet hole 11 is opened on the outer periphery of the slide cylinder 10 at the position of the air inlet pipe 4 opening. A return spring 12 is fixedly connected to the inner end side wall of the air inlet pipe 4, and the end of the return spring 12 is fixedly connected to the outer periphery of the slide cylinder 10.

[0030] In this embodiment, reference Figures 2-4 When the air injection component 6 is injecting air, the air intake fan 8 delivers air into the channel 2. After the air pressure in the channel 2 increases, it will push the slide cylinder 10 to move. When the slide cylinder 10 moves, the air inlet 11 on the slide cylinder 10 will move along with it. The initial position of the air inlet 11 is close to the inner circumference of the inlet of the air inlet pipe 4, so that it is blocked to prevent air leakage. After the air inlet 11 moves, it will connect with the inside of the air inlet pipe 4. Then the air will be output through the air distribution hole 5, thereby ventilating the paraformaldehyde pile.

[0031] The air inlet pipe 4 is set at an angle to prevent paraformaldehyde from flowing back into the channel 2 from the air inlet pipe 4, which would affect the storage of paraformaldehyde.

[0032] In a further preferred embodiment of this utility model, such as Figure 4As shown, the exhaust component 7 includes an exhaust channel 13, which is located on the inner top side wall of the storage compartment 1. An airflow channel 14 communicating with the exhaust channel 13 is provided on the inner circumferential side of the through groove 2. The airflow channel 14 extends to the bottom of the inner side wall of the through groove 2 and communicates with the through groove 2.

[0033] In this embodiment, reference Figure 4 When ventilation is carried out in storage chamber 1, air enters storage chamber 1 through the air distribution hole 5, the air pressure in storage chamber 1 increases, and then the air will enter the airflow channel 14 through the air outlet channel 13 at the top of storage chamber 1, and then be transported downward to the bottom of the channel 2. The exhaust gas is treated by the corresponding container to prevent formaldehyde gas from directly rushing into the air, thereby polluting the air and affecting the surrounding environment.

[0034] In a further preferred embodiment of this utility model, such as Figure 2 As shown, a filter sponge 16 is fixedly connected to the inner circumference of the through groove 2, and an absorbent cloth 17 is fixedly connected to the inner circumference of the filter sponge 16.

[0035] In this embodiment, reference Figure 2 The filter sponge 16 is used to filter dust from the outside air, while the absorbent cloth 17 absorbs moisture from the transported air, preventing excessive humidity in the storage chamber 1, which could cause paraformaldehyde to clump together and affect the storage of paraformaldehyde.

[0036] The implementation principle of the above embodiment is as follows: the air intake fan 8 delivers air into the channel 2. After the air pressure in the channel 2 increases, it will push the slide cylinder 10 to move. When the slide cylinder 10 moves, the air inlet 11 on the slide cylinder 10 will move along with it. The initial position of the air inlet 11 is in contact with the inner circumference of the inlet of the air inlet pipe 4, so that it is blocked to prevent air leakage. After the air inlet 11 moves, it will be connected to the inside of the air inlet pipe 4, and then the air will be output through the air distribution hole 5.

[0037] By utilizing several air distribution holes 5, air is dispersed and transported into the storage chamber 1, allowing for multi-point ventilation inside the paraformaldehyde stack. This prevents a large temperature difference between the inside and outside of the paraformaldehyde stack from affecting subsequent storage. The baffle 15 is used to seal the bottom of the through channel 2, preventing air from being directly exhausted and affecting the ventilation of the paraformaldehyde.

[0038] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A paraformaldehyde storage silo, comprising a storage silo (1), characterized in that, A through groove (2) is provided in the middle of the top side of the storage chamber (1). A number of air inlets (3) are provided on the inner circumference of the through groove (2). An air inlet pipe (4) is fixedly connected in the air inlet pipe (3). The end of the air inlet pipe (4) extends into the storage chamber (1). A number of air distribution holes (5) are provided on the outer circumference of the air inlet pipe (4). The air inlet pipe (4) is inclined downward towards the storage chamber (1). An air injection device (6) is provided at the top of the through groove (2). An exhaust device (7) is provided at the top of the storage chamber (1).

2. The paraformaldehyde storage silo according to claim 1, characterized in that, It also includes an air intake component, which includes an air intake fan (8). The air intake fan (8) is fixedly installed at the top of the through groove (2), and a sealing ring (9) is fixedly connected to the outer periphery of the air intake fan (8). The outer periphery of the sealing ring (9) is fixedly connected to the inner periphery of the through groove (2).

3. The paraformaldehyde storage silo according to claim 2, characterized in that, Each of the air inlet pipes (4) is closed at one end near the through groove (2), and a slide cylinder (10) is slidably connected to one end of the air inlet pipe (4) near the through groove (2). An air inlet hole (11) is opened on the outer periphery of the slide cylinder (10) at the position of the air inlet pipe (4). A return spring (12) is fixedly connected to the inner end side wall of the air inlet pipe (4), and the end of the return spring (12) is fixedly connected to the outer periphery of the slide cylinder (10).

4. The paraformaldehyde storage silo according to claim 3, characterized in that, The exhaust component (7) includes an exhaust channel (13), which is located on the inner top side wall of the storage compartment (1). An airflow channel (14) communicating with the exhaust channel (13) is provided on the inner circumferential side of the through groove (2). The airflow channel (14) extends to the bottom of the inner side wall of the through groove (2) and communicates with the through groove (2).

5. A paraformaldehyde storage silo according to claim 4, characterized in that, A baffle (15) is fixedly connected to the bottom of the channel (2). The baffle (15) is sealed at the bottom of the channel (2) and is located above the outlet of the airflow channel (14).

6. A paraformaldehyde storage silo according to claim 5, characterized in that, A filter sponge (16) is fixedly connected to the inner circumference of the channel (2), and an absorbent cloth (17) is fixedly connected to the inner circumference of the filter sponge (16).