Formaldehyde production heat exchange device

Abstract

The utility model relates to the technical field of formaldehyde production, in particular to a formaldehyde production heat exchange device which comprises a base, a heat exchange box is arranged above the base, a heat exchange pipe is fixed to the inner side of the heat exchange box, and one end of the heat exchange pipe penetrates through and extends to the right side of the heat exchange box and communicates with an air inlet pipe; and the other end of the heat exchange pipe penetrates through and extends to the left side of the heat exchange box and communicates with a gas outlet pipe, the heat exchange box is provided with a filtering mechanism used for filtering smoke entering the heat exchange box, the left side of the heat exchange box communicates with a smoke outlet pipe, and the heat exchange box is provided with a storage mechanism used for storing liquefied water. According to the heat exchange device for formaldehyde production, through cooperation of the mounting frame, a filter plate for filtering flue gas can be conveniently placed in the mounting frame, so that the filter plate is conveniently mounted and dismounted, through cooperation of a vent hole, the flue gas can directly penetrate through the filter plate, so that the flue gas is filtered, and through cooperation of a spring and a clamping block, the heat exchange efficiency is greatly improved. And the connecting plate and the upper side baffle can be fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde production, in particular to a formaldehyde production heat exchange device. Background Art

[0002] Formaldehyde is a colorless gas that is difficult to detect at low concentrations and can be easily masked by other odors, such as air fresheners. At high concentrations, it has a strong irritating and suffocating odor, which is irritating to the human eyes and nose. Formaldehyde is widely used in the petrochemical, pharmaceutical, textile, biochemical, energy, transportation and other industries. It can be used as a disinfectant and preservative, and can also be used to prepare phenolic resins, urea-formaldehyde resins, melamine resins, urotropine, pentaerythritol and other products.

[0003] For example, a formaldehyde production heat exchange device is disclosed in the Chinese utility model patent announcement number (CN216482416U), which includes a heat exchange box, a flue gas inlet pipe is fixedly connected to the bottom of the right side of the heat exchange box, an air inlet pipe is arranged on the top of the flue gas inlet pipe, a fixed frame is fixedly connected to the inner cavity of the heat exchange box, a heat exchange pipe is fixedly connected to the interior of the fixed frame, a flue gas outlet pipe is fixedly connected to the top of the left side of the heat exchange box, a liquid collecting box is arranged at the bottom of the heat exchange pipe, a liquid outlet pipe is fixedly connected to one side of the liquid collecting box, an air outlet pipe is arranged at the bottom of the flue gas outlet pipe, a fixed base is arranged at the bottom of the flue gas inlet pipe, a filter plate is arranged inside the smoke inlet pipe, fixed blocks are symmetrically fixedly connected to the left and right sides of the top of the filter plate, plug-in grooves are symmetrically opened on opposite sides of the two fixed blocks, plug-in rods are symmetrically arranged inside the two plug-in grooves, movable plates are symmetrically fixedly connected to the opposite sides of the two plug-in rods, and first movable plates are symmetrically fixedly connected to the opposite sides of the two movable plates The inclined plate, the opposite sides of the two movable plates are symmetrically fixedly connected with compression springs, the opposite sides of the bottoms of the two connecting rods are symmetrically fixedly connected with limiting blocks, the bottoms of the two limiting blocks are symmetrically provided with limiting grooves, the tops of the two first inclined plates are symmetrically provided with pressing rods, the bottoms of the two pressing rods are symmetrically fixedly connected with the second inclined plate, and the top of the fixed base is fixedly connected with a threaded seat. This practical solution solves the problem that the existing heat exchange device cannot filter the flue gas entering the heat exchange box, which is not only easy to pollute the internal structure of the heat exchange box, but also easy to cause the heat exchange box to be blocked after long-term use, and it is impossible to collect water droplets generated on the surface of the heat exchange tube due to the temperature difference between hot and cold, which is easy to cause water accumulation in the heat exchange box. However, in this patent, when replacing the filter plate, it is necessary to close the flue gas inlet pipe, and then remove the filter plate for replacement. After replacement, the flue gas pipe is opened to intake air, resulting in interruption of the heat exchange process, reducing work efficiency and affecting practicality. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a formaldehyde production heat exchange device, which has the advantages of no need to interrupt air intake when replacing the filter plate, thereby improving formaldehyde production efficiency. It solves the problem in the patent that when replacing the filter plate, the flue gas intake pipe needs to be closed, and then the filter plate needs to be removed for replacement, and then the flue gas pipe needs to be opened for air intake after replacement, which causes the heat exchange process to be interrupted, resulting in reduced work efficiency and affecting practicality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a formaldehyde production heat exchange device, comprising a base, a heat exchange box is arranged above the base, a heat exchange tube is fixed on the inner side of the heat exchange box, one end of the heat exchange tube passes through and extends to the right side of the heat exchange box, and is connected with an air inlet pipe, the other end of the heat exchange tube passes through and extends to the left side of the heat exchange box, and is connected with an air outlet pipe, a filter mechanism for filtering incoming flue gas is arranged on the heat exchange box, a smoke outlet pipe is connected on the left side of the heat exchange box, and a storage mechanism for storing liquefied water is arranged on the heat exchange box;

[0006] The filtering mechanism includes a smoke inlet pipe, a connecting plate, two mounting parts, and a fixing part. The smoke inlet pipe is connected to the right side of the heat exchange box. The upper surface and the lower surface of the smoke inlet pipe are both provided with connecting ports. The connecting plate is located on the inner side of the upper connecting port. The two mounting parts are respectively arranged on the upper and lower sides of the connecting plate. The fixing part is arranged on the smoke inlet pipe to fix the filtering position of the filter plate.

[0007] The beneficial effect of adopting the above further solution is that the operation can be continued uninterruptedly when the filter plate is replaced, thereby maintaining the efficiency of formaldehyde production.

[0008] Furthermore, the mounting component includes a mounting frame, a baffle, and a handle. The mounting frame is fixed to the upper surface of the connecting plate. Vents are provided on both left and right sides of the mounting frame. The baffle is fixed to the upper surface of the mounting frame, and the handle is fixed to the upper surface of the baffle.

[0009] The beneficial effect of adopting the above further solution is that when a filter plate needs to be replaced, a new filter plate can be quickly installed and replace the previous filter plate.

[0010] Furthermore, the length of the connecting plate is equal to the length of the baffle plate, and the width of the connecting plate is equal to the width of the baffle plate.

[0011] The beneficial effect of adopting the above further solution is that the length of the connecting plate is consistent with that of the baffle plate to avoid being affected when moving inside the connecting port.

[0012] Furthermore, the length of the connection port is equal to the length of the baffle, and the width of the connection port is equal to the width of the baffle.

[0013] The beneficial effect of adopting the above further solution is that both the connecting plate and the baffle can block the connecting port, thereby preventing smoke from leaking when entering the smoke inlet pipe.

[0014] Furthermore, the fixing part includes a spring, a card block, and a shift block. A mounting groove is provided on the left inner wall of the upper connecting port. One end of the spring is fixed to the left inner wall of the mounting groove, and the other end of the spring is fixed to the left side of the card block. The shift block is fixed to the upper surface of the card block. A first card slot is provided on the left side of the connecting plate, and a second card slot is provided on the left side of the upper baffle.

[0015] The beneficial effect of adopting the above further solution is to prevent the filter plate from being offset after the position of the filter plate is adjusted.

[0016] Furthermore, the storage mechanism includes a storage box, a flow guide, a water passing part, and four support rods. The storage box is fixed to the lower surface of the heat exchange box, the flow guide is arranged on the heat exchange box, the water passing part is arranged on the storage box, and the four support rods are all fixed to the lower surface of the storage box at one end and to the upper surface of the base at the other end.

[0017] The beneficial effect of adopting the above further solution is that it is convenient to collect and store the water droplets that are liquefied by cooling.

[0018] Furthermore, the guide member includes two first guide plates and two second guide plates, and a mounting opening is opened on the lower surface of the heat exchange box. The two first guide plates are respectively fixed to the left and right inner walls of the mounting opening, and the two second guide plates are respectively fixed to the front and rear inner walls of the mounting opening, and the two first guide plates are fixed between the adjacent sides of the two second guide plates.

[0019] The beneficial effect of adopting the above further solution is that it is used to guide the liquefied water into the storage tank.

[0020] Furthermore, the water-passing member includes a water outlet pipe and a water outlet valve, the top end of the water outlet pipe is connected to the bottom end of the storage box, and the water outlet valve is connected to the outside of the water outlet pipe.

[0021] The beneficial effect of adopting the above further solution is that it is convenient to control the outflow of water stored in the storage box.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] 1. The formaldehyde production heat exchange device can facilitate the placement of the filter plate for filtering the flue gas into the installation frame through the cooperation of the installation frame, thereby facilitating the installation and removal of the filter plate. Through the cooperation of the vent, the flue gas can directly pass through the filter plate, thereby filtering the flue gas. Through the cooperation of the spring and the card block, the connecting plate and the upper baffle can be fixed. When the filter plate needs to be replaced, only the new filter plate needs to be placed in the installation frame located on the outside, and then the old filter plate is taken out, and the filter plate can be connected and work can be carried out while the filter plate is replaced.

[0024] 2. The formaldehyde production heat exchange device, through the cooperation of the guide piece, after the flue gas enters the heat exchange box, when the high-temperature flue gas contacts the heat exchange tube with a lower temperature, the water vapor in the flue gas is cooled and liquefied. The first guide plate and the second guide plate can guide the liquefied water droplets into the storage box, so as to facilitate the storage of water. Through the cooperation of the water outlet valve, the outflow of the stored water in the storage box can be controlled, so as to facilitate the quantitative extraction of the water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the filtering mechanism of the utility model;

[0027] Figure 3 This is a schematic diagram of the installation part of the utility model;

[0028] Figure 4 It is a schematic diagram of the storage mechanism of the utility model.

[0029] In the figure: 1. base; 2. heat exchange box; 3. heat exchange tube; 4. air inlet pipe; 5. air outlet pipe; 6. filtering mechanism; 61. smoke inlet pipe; 62. connecting plate; 63. mounting member; 631. mounting frame; 632. baffle; 633. handle; 634. air vent; 64. fixing member; 641. spring; 642. block; 643. shift block; 644. mounting slot; 645. first slot; 646. second slot; 65. connecting port; 7. smoke outlet pipe; 8. storage mechanism; 81. storage box; 82. guide member; 821. first guide plate; 822. second guide plate; 823. mounting port; 83. water passing member; 831. water outlet pipe; 832. water outlet valve; 84. supporting rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1 A formaldehyde production heat exchange device in this embodiment includes a base 1, a heat exchange box 2 is arranged above the base 1, a heat exchange tube 3 is fixed on the inner side of the heat exchange box 2, one end of the heat exchange tube 3 passes through and extends to the right side of the heat exchange box 2, and is connected with an air inlet pipe 4, water vapor and air can be introduced into the heat exchange tube 3 through the air inlet pipe 4 to preheat the production of formaldehyde, the other end of the heat exchange tube 3 passes through and extends to the left side of the heat exchange box 2, and is connected with an air outlet pipe 5, the air outlet pipe 5 can pass the preheated water vapor and air, the heat exchange box 2 is provided with a filter mechanism 6 for filtering the incoming flue gas, which can work continuously and uninterruptedly when the filter plate is replaced, the left side of the heat exchange box 2 is connected with a smoke outlet pipe 7 to pass the smoke after heat exchange, and the heat exchange box 2 is provided with a storage mechanism 8 for storing liquefied water to collect and store the water droplets after cooling and liquefaction.

[0032] See also Figure 2-3 In order to be able to work continuously and uninterruptedly when replacing the filter plate, the filtering mechanism 6 in this embodiment includes a smoke inlet pipe 61, a connecting plate 62, two mounting parts 63, and a fixing part 64. The smoke inlet pipe 61 is connected to the right side of the heat exchange box 2. The upper surface and the lower surface of the smoke inlet pipe 61 are provided with connecting ports 65 to adjust the position of the filter plate and facilitate the replacement of the filter plate. The connecting plate 62 is located on the inner side of the upper connecting port 65. The two mounting parts 63 are respectively arranged on the upper and lower sides of the connecting plate 62 to facilitate the installation and removal of the filter plate. When a filter plate needs to be replaced, the new filter plate can be quickly installed and replace the previous filter plate. The fixing part 64 is arranged on the smoke inlet pipe 61 to fix the filtering position of the filter plate to prevent the filter plate from shifting after the position of the filter plate is adjusted.

[0033] In this embodiment, the mounting member 63 includes a mounting frame 631, a baffle 632, and a handle 633. The mounting frame 631 is fixed to the upper surface of the connecting plate 62. Vents 634 are provided on both sides of the mounting frame 631. After the filter plate is installed inside the mounting frame 631, the vents 634 allow the smoke to pass through the filter plate, thereby filtering the smoke. The baffle 632 is fixed to the upper surface of the mounting frame 631, and the handle 633 is fixed to the upper surface of the baffle 632. 633 can control the position of the baffle 632, so as to facilitate the adjustment of the position of the filter plate. The fixing member 64 includes a spring 641, a block 642, and a shift block 643. The left inner wall of the upper connecting port 65 is provided with a mounting groove 644. One end of the spring 641 is fixed to the left inner wall of the mounting groove 644, and the other end of the spring 641 is fixed to the left side of the block 642. The shift block 643 is fixed to the upper surface of the block 642. The upper surface of the smoke inlet pipe 61 is provided with a sliding opening. The shift block 64 3 is located inside the slide, and the width of the slide matches the width of the shifting block 643. A first card slot 645 is provided on the left side of the connecting plate 62. A lot of impurities are filtered out of the filter plate, and the filter plate needs to be replaced and cleaned. At this time, the shifting block 643 is shifted to the left, and the shifting block 643 drives the card block 642 to move, so that the card block 642 is removed from the first card slot 645. At this time, the connecting plate 62 loses its fixing effect, and a new filter plate is installed in the installation frame 631 located outside the smoke inlet pipe 61. Then Move the installation frame 631 downward and exchange its position with the used filter plate, so that the used filter plate can be moved out of the inlet and outlet pipe 61, and the filter plate can be replaced without stopping the air intake. A second slot 646 is provided on the left side of the upper baffle plate 632. After the position is exchanged, the upper baffle plate 632 reaches the upper connecting port 65. At this time, the block 642 is inserted into the second slot 646 to fix the position of the upper baffle plate 632, thereby fixing the position of the replaced filter plate.

[0034] It should be noted that the length of the connecting plate 62 is equal to the length of the baffle 632, the width of the connecting plate 62 is equal to the width of the baffle 632, the length of the connecting port 65 is equal to the length of the baffle 632, and the width of the connecting port 65 is equal to the width of the baffle 632, so that both the connecting plate 62 and the baffle 632 can block the connecting port 65, thereby preventing smoke from leaking when entering the smoke inlet pipe 61.

[0035] See also Figure 4In order to collect and store the water droplets that have been liquefied by cooling, the storage mechanism 8 in this embodiment includes a storage box 81, a guide member 82, a water-passing member 83, and four support rods 84. The storage box 81 is fixed to the lower surface of the heat exchange box 2. The guide member 82 is arranged on the heat exchange box 2 to guide the liquefied water into the storage box 81. The water-passing member 83 is arranged on the storage box 81 to facilitate the outflow of the water stored in the storage box 81. The four support rods 84 are fixed to the lower surface of the storage box 81 at one end and to the upper surface of the base 1 at the other end, so that the storage box 81 is supported to a certain height for the installation of components.

[0036] In this embodiment, the guide member 82 includes two first guide plates 821 and two second guide plates 822. The lower surface of the heat exchange box 2 is provided with a mounting opening 823. The two first guide plates 821 are respectively fixed to the inner walls on the left and right sides of the mounting opening 823. The two second guide plates 822 are respectively fixed to the inner walls on the front and rear sides of the mounting opening 823. The two first guide plates 821 are fixed between the adjacent sides of the two second guide plates 822. The water vapor in the high-temperature flue gas contacts the lower temperature flue gas. When the water vapor is cooled and liquefied on the surface of the heat exchange tube 3, water droplets are generated on the surface of the heat exchange tube 3. The water droplets will slide down, and the first guide plate 821 and the second guide plate 822 will guide the water droplets into the storage box 81. The water passing part 83 includes a water outlet pipe 831 and a water outlet valve 832. The top of the water outlet pipe 831 is connected to the bottom of the storage box 81, and the water outlet valve 832 is connected to the outside of the water outlet pipe 831. By controlling the water outlet valve 832, the water flow stored in the storage box 81 can be extracted.

[0037] The working principle of the above embodiment is:

[0038] (1) Before the high-temperature flue gas is passed from the smoke inlet pipe 61 to the heat exchange box 2, it is first filtered by the filter plate. Then the high-temperature flue gas enters the heat exchange box 2 and exchanges heat with the heat exchange pipe 3 to preheat the formaldehyde production. After filtering the flue gas for a long time, the filter plate filters out a lot of impurities and needs to be replaced and cleaned. At this time, the shift block 643 is shifted to the left, and the shift block 643 drives the block 642 to move, so that the block 642 is removed from the first slot 645. At this time, the connecting plate 62 loses its fixing effect. The new filter plate is installed in the installation frame 631 located outside the smoke inlet pipe 61. Then, the installation frame 631 is moved downward to exchange the position with the used filter plate, so that the used filter plate is moved out of the smoke inlet pipe 61. The filter plate can be replaced without stopping the air intake.

[0039] (2) After the position is changed, the upper baffle 632 reaches the upper connection port 65. At this time, the block 642 is inserted into the second slot 646 to fix the position of the upper baffle 632, thereby fixing the position of the replaced filter plate. When the high-temperature flue gas is heat exchanged in the heat exchange box 2, the water vapor in the high-temperature flue gas contacts the surface of the heat exchange tube 3 with a lower temperature. The water vapor is cooled and liquefied, causing water droplets to form on the surface of the heat exchange tube 3. The water droplets will slide down, and the first guide plate 821 and the second guide plate 822 will guide the water droplets into the storage box 81. By controlling the water outlet valve 832, the water flow stored in the storage box 81 can be extracted.

Claims

1. A formaldehyde production heat exchange device, comprising a base (1), characterized in that: A heat exchange box (2) is provided above the base (1), a heat exchange tube (3) is fixed inside the heat exchange box (2), one end of the heat exchange tube (3) passes through and extends to the right side of the heat exchange box (2), and is connected to an air inlet pipe (4), the other end of the heat exchange tube (3) passes through and extends to the left side of the heat exchange box (2), and is connected to an air outlet pipe (5), a filtering mechanism (6) for filtering incoming smoke is provided on the heat exchange box (2), the left side of the heat exchange box (2) is connected to a smoke outlet pipe (7), and a storage mechanism (8) for storing liquefied water is provided on the heat exchange box (2); The filtering mechanism (6) comprises a smoke inlet pipe (61), a connecting plate (62), two mounting members (63), and a fixing member (64); the smoke inlet pipe (61) is connected to the right side of the heat exchange box (2); the upper surface and the lower surface of the smoke inlet pipe (61) are both provided with connecting ports (65); the connecting plate (62) is located on the inner side of the upper connecting port (65); the two mounting members (63) are respectively arranged on the upper and lower sides of the connecting plate (62); and the fixing member (64) is arranged on the smoke inlet pipe (61) and is used to fix the filtering position of the filter plate.

2. A formaldehyde production heat exchange device according to claim 1, characterized in that: The mounting member (63) comprises a mounting frame (631), a baffle (632), and a handle (633); the mounting frame (631) is fixed to the upper surface of the connecting plate (62); vents (634) are provided on both left and right sides of the mounting frame (631); the baffle (632) is fixed to the upper surface of the mounting frame (631); and the handle (633) is fixed to the upper surface of the baffle (632).

3. A formaldehyde production heat exchange device according to claim 2, characterized in that: The length of the connecting plate (62) is equal to the length of the baffle plate (632), and the width of the connecting plate (62) is equal to the width of the baffle plate (632).

4. A formaldehyde production heat exchange device according to claim 3, characterized in that: The length of the connection port (65) is equal to the length of the baffle (632), and the width of the connection port (65) is equal to the width of the baffle (632).

5. A formaldehyde production heat exchange device according to claim 4, characterized in that: The fixing member (64) comprises a spring (641), a clamping block (642), and a shifting block (643); a mounting groove (644) is provided on the left inner wall of the upper connection port (65); one end of the spring (641) is fixed to the left inner wall of the mounting groove (644); the other end of the spring (641) is fixed to the left side of the clamping block (642); the shifting block (643) is fixed to the upper surface of the clamping block (642); a first clamping groove (645) is provided on the left side of the connecting plate (62); and a second clamping groove (646) is provided on the left side of the upper baffle (632).

6. A formaldehyde production heat exchange device according to claim 1, characterized in that: The storage mechanism (8) comprises a storage box (81), a flow guide (82), a water-passing member (83), and four support rods (84); the storage box (81) is fixed to the lower surface of the heat exchange box (2); the flow guide (82) is arranged on the heat exchange box (2); the water-passing member (83) is arranged on the storage box (81); and the four support rods (84) are all fixed at one end to the lower surface of the storage box (81) and at the other end to the upper surface of the base (1).

7. A formaldehyde production heat exchange device according to claim 6, characterized in that: The guide member (82) comprises two first guide plates (821) and two second guide plates (822); a mounting opening (823) is provided on the lower surface of the heat exchange box (2); the two first guide plates (821) are respectively fixed to the left and right inner walls of the mounting opening (823); the two second guide plates (822) are respectively fixed to the front and rear inner walls of the mounting opening (823); and the two first guide plates (821) are fixed between adjacent sides of the two second guide plates (822).

8. A formaldehyde production heat exchange device according to claim 6, characterized in that: The water-passing member (83) comprises a water outlet pipe (831) and a water outlet valve (832); the top end of the water outlet pipe (831) is connected to the bottom end of the storage box (81); and the water outlet valve (832) is connected to the outside of the water outlet pipe (831).

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