Dye vat heater

Abstract

The utility model belongs to the technical field of printing and dyeing processing equipment, and particularly relates to a dye vat heater which comprises a combustor, a combustion device, more than two heat exchange devices, a liquid inlet header pipe and a liquid outlet header pipe. The heat exchange device comprises a heat exchange cylinder and a smoke pipe arranged in the heat exchange cylinder, one end of the heat exchange cylinder is communicated with a liquid inlet header pipe through a first liquid inlet branch pipe, the other end of the heat exchange cylinder is communicated with a liquid outlet header pipe through a first liquid outlet branch pipe, one end of the smoke pipe is communicated with the combustion chamber, and the other end of the smoke pipe is connected with a smoke outlet pipe. The utility model has the advantages of low flow velocity, small resistance and low operation noise, and can not cause the phenomenon of'evacuation 'due to overhigh flow velocity.

Description

Technical field:

[0001] The utility model belongs to the technical field of printing and dyeing equipment, in particular to a dye vat heater. Background technology:

[0002] Dyeing vats are used in the textile and printing and dyeing fields. They usually use steam to heat the dye solution to the process temperature through a heat exchanger and keep it for a certain period of time to achieve fabric coloring.

[0003] The Chinese invention patent (publication number CN110735268A, application date 2019.12.02, publication date 2020.01.31) discloses a gas heating device for a printing and dyeing cylinder, comprising a heat supply part and a heat exchange part connected to each other, wherein the heat supply part comprises a natural gas burner, the natural gas burner is connected to a flue gas pipe, the outside of the flue gas pipe is provided with a water pipe, the water pipe is connected to a water inlet pipe; the heat exchange part comprises a heat exchange tube, the outside of the heat exchange tube is provided with a heat exchange cylinder, the heat exchange cylinder is provided with a water outlet pipe and a tube sheet, the water outlet pipe is provided with a water outlet, and the tube sheet is provided with a flue gas outlet. The flue gas pipe comprises a flue gas pipe 1 and a flue gas pipe 2, the water pipe comprises a water pipe 1 and a water pipe 2, the water pipe 1 and the water pipe 2 are connected by an elbow. The water pipe 1 is provided with a water pipe 1, and the water pipe 2 is provided with a water pipe 2. The heat supply part and the heat exchange part are connected by an elbow. The elbow comprises elbow one and elbow two.

[0004] The disadvantages of the above-mentioned gas heating device for dyeing and printing cylinders are: the flow rate in the flue gas pipe, water pipe, heat exchange pipe and heat exchange cylinder is large, the resistance is relatively large, the noise is large during operation, and the "evacuation" phenomenon may be caused due to the excessive flow rate. Summary of the invention:

[0005] The utility model aims to provide a dye vat heater, which has low flow rate, low resistance, low running noise and will not cause "evacuation" phenomenon due to excessive flow rate.

[0006] The utility model is achieved in this way:

[0007] A dye vat heater comprises a burner, a combustion device, a heat exchange device, a liquid inlet main pipe and a liquid outlet main pipe, wherein two or more heat exchange devices are arranged in parallel, a combustion chamber connected to the burner is arranged in the combustion device, the heat exchange device comprises a heat exchange cylinder and a flue gas pipe arranged in the heat exchange cylinder, one end of the heat exchange cylinder is connected to the liquid inlet main pipe through a liquid inlet branch pipe, and the other end is connected to the liquid outlet main pipe through a liquid outlet branch pipe, one end of the flue gas pipe is connected to the combustion chamber, and the other end is connected to the flue gas outlet pipe.

[0008] In the above-mentioned dye vat heater, one end of the combustion device is connected to the burner, and the other end is connected to the heat exchange device.

[0009] In the above-mentioned dye vat heater, the liquid inlet branch pipe 1 is arranged at one end of the heat exchange tube close to the combustion device, and the liquid outlet branch pipe 1 is arranged at one end of the heat exchange tube away from the combustion device.

[0010] In the above-mentioned dye vat heater, the combustion device includes an outer tube and an inner tube arranged in the outer tube, one end of the outer tube is connected to the liquid inlet main pipe through the second liquid inlet branch pipe, and the other end is connected to the liquid outlet main pipe through the second liquid outlet branch pipe, and the inner cavity of the inner tube is the combustion chamber.

[0011] In the above-mentioned dye vat heater, the outer cylinder and the inner cylinder are coaxially arranged.

[0012] In the above-mentioned dye vat heater, one end of the outer tube is connected to the burner, and the other end is connected to the heat exchange tube.

[0013] In the above-mentioned dye vat heater, the second liquid inlet branch pipe is arranged at one end of the outer tube close to the burner, and the second liquid outlet branch pipe is arranged at one end of the outer tube away from the burner.

[0014] In the above-mentioned dye vat heater, the liquid inlet main pipe is arranged at one end of the heat exchange cylinder close to the combustion device, and the liquid inlet main pipe is connected to the liquid inlet branch pipe 2 through a connecting pipe 1. The liquid outlet main pipe is arranged at one end of the outer cylinder away from the burner, and the liquid outlet main pipe is connected to the liquid outlet branch pipe 1 through a connecting pipe 2.

[0015] In the above-mentioned dye vat heater, the axial directions of the combustion device and the heat exchange device are both arranged in the horizontal direction, the liquid inlet main pipe is arranged below the heat exchange cylinder, and the liquid outlet main pipe is located above the outer cylinder.

[0016] In the above-mentioned dye vat heater, the smoke pipe includes an outer pipe, petal-shaped fins and positioning posts, the petal-shaped fins are arranged in the outer pipe, and the positioning posts are arranged in the center of the petal-shaped fins.

[0017] In the above-mentioned dye vat heater, a plurality of smoke pipes are provided and arranged in staggered rows to form a smoke pipe bundle.

[0018] The above-mentioned dye vat heater also includes a temperature probe for detecting the temperature of the smoke outlet pipe, a liquid level electrode for detecting whether there is a lack of water, and a pressure sensor for detecting the pressure of the liquid outlet main pipe.

[0019] In the above-mentioned dye vat heater, the liquid level electrode and the pressure sensor are both arranged in the liquid outlet main pipe, and the liquid level electrode is located at the top of the liquid outlet main pipe.

[0020] In the above-mentioned dye vat heater, a controller is also included, and the controller is electrically connected to the burner, the temperature probe, the liquid level electrode, and the pressure sensor respectively.

[0021] The outstanding advantages of the utility model compared with the prior art are:

[0022] 1. The utility model has two or more heat exchange devices connected in parallel to divert the dye solution and high-temperature flue gas. The flow rate in the heat exchange cylinder and the flue gas pipe is small, the resistance is small, the running noise is small, and there will be no "evacuation" phenomenon caused by excessive flow rate;

[0023] 2. The combustion device of the utility model comprises an outer cylinder and an inner cylinder arranged in the outer cylinder. One end of the outer cylinder is connected to the liquid inlet main pipe through the second liquid inlet branch pipe, and the other end is connected to the liquid outlet main pipe through the second liquid outlet branch pipe. The inner cavity of the inner cylinder is the combustion chamber. The flame and high-temperature flue gas in the inner cylinder heat the dye liquid in the outer cylinder. While fully utilizing the heat, the dye liquid in the outer cylinder absorbs the heat released by the flame and the high-temperature flue gas, protecting the inner cylinder from being burned due to excessive temperature.

[0024] 3. The utility model has multiple protections against water shortage, over-temperature and over-pressure, is safe and reliable, and has a high degree of automation. It does not require full-time personnel to operate, thus saving labor costs. Description of the drawings:

[0025] Figure 1 It is a three-dimensional diagram of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the utility model;

[0027] Figure 3 It is a cross-sectional view of the smoke pipe of the utility model.

[0028] Figure numerals: 1, burner; 2, liquid inlet main pipe; 3, liquid outlet main pipe; 4, combustion chamber; 5, heat exchange cylinder; 6, flue gas pipe; 61, outer tube; 62, petal-shaped fins; 63, positioning column; 7, liquid inlet branch pipe one; 8, liquid outlet branch pipe one; 9, smoke outlet pipe; 10, outer tube; 11, inner tube; 12, liquid inlet branch pipe two; 13, liquid outlet branch pipe two; 14, connecting pipe one; 15, connecting pipe two. Specific implementation method:

[0029] The present invention is further described below with reference to specific embodiments. Figure 1 —3:

[0030] A dye vat heater includes a burner 1, a combustion device, a heat exchange device, a liquid inlet main pipe 2 and a liquid outlet main pipe 3, wherein more than two heat exchange devices are arranged in parallel, a combustion chamber 4 connected to the burner 1 is arranged in the combustion device, and the heat exchange device includes a heat exchange cylinder 5 and a flue gas pipe 6 arranged in the heat exchange cylinder 5, one end of the heat exchange cylinder 5 is connected to the liquid inlet main pipe 2 through a liquid inlet branch pipe 7, and the other end is connected to the liquid outlet main pipe 3 through a liquid outlet branch pipe 8, and one end of the flue gas pipe 6 is connected to the combustion chamber 4 and the other end is connected to the flue gas outlet pipe 9. In this embodiment, two heat exchange devices are arranged in parallel, and two liquid inlet branch pipes 7 and two liquid outlet branch pipes 8 are arranged, each liquid inlet branch pipe 7 is connected to a corresponding heat exchange cylinder 5, and each liquid outlet branch pipe 8 is connected to a corresponding heat exchange cylinder 5.

[0031] The working principle of the utility model is as follows: Figure 1-3 As shown, the burner 1 mixes a proper amount of fuel and air and sends them into the combustion chamber 4, where they are completely burned to release a large amount of heat and generate high-temperature flue gas. The high-temperature flue gas is heat-exchanged through the flue pipe 6 to form low-temperature flue gas and then discharged from the flue outlet pipe 9. Figure 2 The dye vat pump sucks the dye liquid from the bottom of the dye vat into the pump body and then sends the dye liquid into the liquid inlet main pipe 2, and then enters the heat exchange cylinder 5 through the liquid inlet branch pipe 7 to heat exchange and heat with the high-temperature flue gas in the flue pipe 6, and then flows out through the liquid outlet branch pipe 8 and the liquid outlet main pipe 6 and then sent to the dye vat. Figure 1 Indicated by solid arrow.

[0032] The utility model has two or more heat exchange devices connected in parallel to divert the dye solution and the high-temperature flue gas. The flow rate in the heat exchange tube 5 and the flue gas pipe 6 is small, the resistance is small, the operation noise is small, and there is no "evacuation" phenomenon caused by excessive flow rate.

[0033] There are two traditional heat sources for dye liquor heating: 1. Purchase steam from a power plant. Limited by the site and steam transmission distance, the high price of steam leads to high production costs. 2. Steam boilers produce steam. Steam boilers are special equipment. To implement special equipment regulations, there must be an independent boiler room. The steam transmission distance is long and the heat loss is large. The boiler and safety accessories need to be inspected every year and must be operated by a fixed certified boiler operator. This brings a lot of trouble and economic burden to dye vat users. Compared with traditional heat sources, the utility model does not belong to special equipment, is not subject to inspection, and is small in size and light in weight, with low material cost, no need for an independent equipment room, flexible and unrestricted installation, low one-time investment, and low heat loss, high efficiency, and low production cost.

[0034] Furthermore, one end of the combustion device is connected to the burner 1, and the other end is connected to the heat exchange device.

[0035] Preferably, the burner 1 adopts a fully premixed low-nitrogen combustion technology, which is energy-saving and environmentally friendly.

[0036] The structure of the flue gas pipe 6: Figure 3 As shown, the flue gas pipe 6 comprises an outer tube 61, a petal-shaped fin 62 and a positioning column 63. The petal-shaped fin 62 is arranged inside the outer tube 61, and the positioning column 63 is arranged at the center of the petal-shaped fin 62. The dye solution passes through the outer side of the outer tube 61, and the high-temperature flue gas does not pass through the positioning column 63. The high-temperature flue gas passes through both the inner and outer sides of the petal-shaped fin 62. The petal-shaped fin 62 expands the area directly in contact with the high-temperature flue gas, increases the contact area between the flue gas pipe 6 and the high-temperature flue gas, and increases the heat exchange area. When the size of the outer tube 61 remains unchanged, the heat exchange area is greatly increased, the exhaust temperature is reduced, and the energy-saving effect is achieved. In addition, due to the low exhaust temperature, there is no need to configure a waste heat recovery heat exchanger.

[0037] Preferably, a plurality of the smoke pipes 6 are provided and arranged in staggered rows to form a smoke pipe bundle.

[0038] Furthermore, the liquid inlet branch pipe 7 is arranged at one end of the heat exchange tube 5 close to the combustion device, and the liquid outlet branch pipe 8 is arranged at one end of the heat exchange tube 5 away from the combustion device.

[0039] The structure of the combustion device comprises an outer cylinder 10 and an inner cylinder 11 arranged in the outer cylinder 10. One end of the outer cylinder 10 is connected to the liquid inlet main pipe 2 through the second liquid inlet branch pipe 12, and the other end is connected to the liquid outlet main pipe 3 through the second liquid outlet branch pipe 13. The inner cavity of the inner cylinder 11 is the combustion chamber 4. There are flames and high-temperature flue gas in the inner cylinder 11, and dye liquid flows between the outer cylinder 10 and the inner cylinder 11. The flames and high-temperature flue gas in the inner cylinder 11 heat the dye liquid in the outer cylinder 10. While fully utilizing the heat, the dye liquid in the outer cylinder 10 absorbs the heat released by the flames and high-temperature flue gas, protecting the inner cylinder 11 from being burned due to excessive temperature.

[0040] Furthermore, the outer cylinder 10 and the inner cylinder 11 are coaxially arranged.

[0041] Furthermore, one end of the outer tube 10 is connected to the burner 1 , and the other end is connected to the heat exchange tube 5 .

[0042] In order to better cool the inner tube 11 and protect the inner tube 11 from being burned, the second liquid inlet branch pipe 12 is arranged at the end of the outer tube 10 close to the burner 1, and the second liquid outlet branch pipe 13 is arranged at the end of the outer tube 10 away from the burner 1.

[0043] In order to make rational use of space, the liquid inlet main pipe 2 is arranged at one end of the heat exchange tube 5 close to the combustion device, and the liquid inlet main pipe 2 is connected to the liquid inlet branch pipe 12 through a connecting pipe 14. The liquid outlet main pipe 3 is arranged at one end of the outer tube 10 away from the burner 1, and the liquid outlet main pipe 3 is connected to the liquid outlet branch pipe 8 through a connecting pipe 2 15.

[0044] In order to further optimize the space, the axial directions of the combustion device and the heat exchange device are both arranged in the horizontal direction, the liquid inlet main pipe 2 is arranged below the heat exchange cylinder 5, and the liquid outlet main pipe 3 is located above the outer cylinder 10.

[0045] Furthermore, it also includes a temperature probe for detecting the outlet temperature of the smoke pipe 9, a liquid level electrode for detecting whether there is a lack of water, and a pressure sensor for detecting the pressure of the liquid main pipe 3. When the temperature probe detects over-temperature, an alarm is given; when the liquid level electrode detects lack of water, the burner 1 cannot be started or stopped; when the pressure sensor detects that the pressure exceeds the set pressure, the burner 1 is turned off. The utility model has multiple protections for lack of water, over-temperature, and over-pressure, and is safe and reliable.

[0046] Installation position of the liquid level electrode and pressure sensor: The liquid level electrode and pressure sensor are both arranged in the liquid outlet main pipe 3, and the liquid level electrode is located at the top of the liquid outlet main pipe 3 to detect whether there is liquid at the highest position of the equipment.

[0047] In order to facilitate automatic control, a controller is also included. The controller is electrically connected to the burner 1, the temperature probe, the liquid level electrode, and the pressure sensor respectively. The controller has a high degree of automation and does not require full-time personnel to operate, thus saving labor costs.

[0048] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A dye vat heater, characterized in that: The invention comprises a burner (1), a combustion device, a heat exchange device, a liquid inlet main pipe (2) and a liquid outlet main pipe (3), wherein two or more heat exchange devices are arranged in parallel, wherein a combustion chamber (4) connected to the burner (1) is arranged in the combustion device, wherein the heat exchange device comprises a heat exchange cylinder (5) and a flue gas pipe (6) arranged in the heat exchange cylinder (5), wherein one end of the heat exchange cylinder (5) is connected to the liquid inlet main pipe (2) via a liquid inlet branch pipe (7) and the other end is connected to the liquid outlet main pipe (3) via a liquid outlet branch pipe (8), wherein one end of the flue gas pipe (6) is connected to the combustion chamber (4) and the other end is connected to a flue gas outlet pipe (9).

2. A dye vat heater according to claim 1, characterized in that: The liquid inlet branch pipe 1 (7) is arranged at an end of the heat exchange tube (5) close to the combustion device, and the liquid outlet branch pipe 1 (8) is arranged at an end of the heat exchange tube (5) away from the combustion device.

3. A dye vat heater according to claim 1, characterized in that: The combustion device comprises an outer cylinder (10) and an inner cylinder (11) arranged inside the outer cylinder (10); one end of the outer cylinder (10) is connected to a liquid inlet main pipe (2) via a second liquid inlet branch pipe (12), and the other end is connected to a liquid outlet main pipe (3) via a second liquid outlet branch pipe (13); the inner cavity of the inner cylinder (11) is the combustion chamber (4).

4. A dye vat heater according to claim 3, characterized in that: The second liquid inlet branch pipe (12) is arranged at one end of the outer tube (10) close to the burner (1), and the second liquid outlet branch pipe (13) is arranged at one end of the outer tube (10) far from the burner (1).

5. A dye vat heater according to claim 4, characterized in that: The liquid inlet main pipe (2) is arranged at one end of the heat exchange cylinder (5) close to the combustion device, and the liquid inlet main pipe (2) is connected to the second liquid inlet branch pipe (12) through a connecting pipe (14). The liquid outlet main pipe (3) is arranged at one end of the outer cylinder (10) away from the burner (1), and the liquid outlet main pipe (3) is connected to the first liquid outlet branch pipe (8) through a connecting pipe (15).

6. A dye vat heater according to claim 5, characterized in that: The combustion device and the heat exchange device are both arranged in the horizontal direction in their axial directions; the liquid inlet main pipe (2) is arranged below the heat exchange cylinder (5); and the liquid outlet main pipe (3) is located above the outer cylinder (10).

7. A dye vat heater according to claim 1, characterized in that: The smoke pipe (6) comprises an outer pipe (61), a petal-shaped fin (62) and a positioning column (63); the petal-shaped fin (62) is arranged inside the outer pipe (61), and the positioning column (63) is arranged at the center of the petal-shaped fin (62).

8. The dye vat heater according to claim 1, characterized in that: It also includes a temperature probe for detecting the outlet temperature of the smoke outlet pipe (9), a liquid level electrode for detecting whether there is a lack of water, and a pressure sensor for detecting the pressure of the liquid outlet main pipe (3).

9. A dye vat heater according to claim 8, characterized in that: It also comprises a controller, which is electrically connected to the burner (1), the temperature probe, the liquid level electrode, and the pressure sensor respectively.

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