Chlorination reaction kettle

Abstract

The invention provides a chlorination reaction kettle, which belongs to the technical field of reaction kettles and comprises a kettle body, a jacket, a steam pipe, a steam outlet pipe, a sliding ring, a driving assembly and a plurality of electric heating rods. And the jacket is sleeved outside the kettle body and is fixedly connected with the kettle body. And one end of the steam pipe is fixedly connected with the jacket and is communicated with the bottom in the jacket. And one end of the steam outlet pipe is fixedly connected with the jacket and is communicated with the top in the jacket. The sliding ring is located in the jacket and slidably arranged outside the kettle body in a sleeving mode, the sliding ring is provided with an annular cavity annularly arranged outside the kettle body, and the annular cavity penetrates through the sliding ring in the direction towards the kettle body. The driving assembly is used for driving the sliding ring to slide. The multiple electric heating rods are located in the annular cavity and fixedly connected with the sliding ring. According to the chlorination reaction kettle provided by the invention, the problem that the chlorination reaction is influenced due to insufficient heating temperature of a part of the chlorination reaction region in the kettle body can be avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of reaction kettles, and more specifically, relates to a chlorination reaction kettle. Background Art

[0002] The chlorination reaction kettle is mainly used for carrying out chlorination reactions. Adding toluene into the chlorination reaction kettle and introducing chlorine gas can generate benzotrichloride. After adding toluene into the kettle body, it is necessary to heat the toluene to an appropriate temperature. A jacket is fixedly sleeved outside the kettle body of the chlorination reaction kettle, and steam is introduced into the jacket to heat the inside of the kettle body. During the diffusion process of the steam, the inside of the kettle body cannot be heated evenly, which results in insufficient heating temperature in some areas of the kettle body where chlorination reactions occur, thereby affecting the chlorination reaction. Summary of the Invention

[0003] An object of the present invention is to provide a chlorination reaction kettle, aiming to solve the problem that the chlorination reaction is affected due to insufficient heating temperature in some areas of the kettle body where chlorination reactions occur.

[0004] To achieve the above object, the technical solution adopted by the present invention is: providing a chlorination reaction kettle, including a kettle body, a jacket, a steam pipe, an outlet pipe, a sliding ring, a driving component, and a plurality of electric heating rods. The jacket is sleeved outside the kettle body and fixedly connected to the kettle body. One end of the steam pipe is fixedly connected to the jacket and communicates with the bottom inside the jacket. One end of the outlet pipe is fixedly connected to the jacket and communicates with the top inside the jacket. The sliding ring is located inside the jacket and is slidably sleeved outside the kettle body in the vertical direction. The sliding ring has an annular cavity formed around the kettle body, and the annular cavity penetrates the sliding ring towards the kettle body. The driving component is used to drive the sliding ring to slide. A plurality of electric heating rods are located inside the annular cavity and are evenly distributed around the kettle body. The electric heating rods are fixedly connected to the sliding ring.

[0005] In a possible implementation manner, the chlorination reaction kettle further includes a blowing pipe and an outlet straight pipe. The blowing pipe has a first vertical section arranged vertically, the first vertical section is fixedly arranged on the sliding ring and communicates with the annular cavity, the first vertical section slidably penetrates the jacket, and air flow is used to be introduced into the blowing pipe. The outlet straight pipe is arranged vertically, the outlet straight pipe is fixedly arranged on the sliding ring and communicates with the annular cavity, and the outlet straight pipe slidably penetrates the jacket.

[0006] In a possible implementation, the chlorination reactor further includes a connecting pipe, an upper end plate, a lower end plate, and a blower. The connecting pipe is vertically arranged. The upper end plate is fixedly attached to the upper end face of the connecting pipe. The lower end plate is fixedly attached to the lower end face of the connecting pipe, and the lower end plate is provided with ventilation holes communicating with the connecting pipe. The blower is fixedly arranged on the lower end plate, and the air outlet of the blower communicates with the ventilation holes. Wherein, the blowing pipe further has a second vertical section arranged vertically, and the second vertical section slidably penetrates through the upper end plate so that the lower end of the second vertical section is located inside the connecting pipe.

[0007] In a possible implementation, the chlorination reactor further includes a heat absorber, a cold water pipe, and a return water pipe. The top surface of the heat absorber is provided with a heat exchange groove, and a heat exchange cavity is arranged inside the heat absorber. The longitudinal section of the heat exchange cavity is in a U-shaped structure, and the heat exchange cavity sleeves outside the heat exchange groove. One end of the cold water pipe is fixedly connected to the heat absorber and communicates with the bottom of the heat exchange cavity. One end of the return water pipe is fixedly connected to the heat absorber and communicates with the top of the heat exchange cavity. Wherein, the lower end of the connecting pipe is located inside the heat exchange groove and is fixedly connected to the heat absorber.

[0008] In a possible implementation, the top wall of the jacket is located above the side wall of the kettle body, and the side wall of the kettle body has a plurality of upwardly protruding protruding parts, and the protruding parts are fixedly connected to the top wall of the jacket so that the side wall of the kettle body and the top wall of the jacket enclose a plurality of maintenance holes.

[0009] In a possible implementation, the chlorination reactor further includes a closing pipe. The axis line of the closing pipe is vertically arranged, and the closing pipe slidably penetrates through the top wall of the jacket in the vertical direction and is placed on the kettle body so that the closing pipe can block a plurality of the maintenance holes.

[0010] In a possible implementation, the driving assembly includes an annular member and a telescopic assembly. The annular member is fixedly connected to both the blowing pipe and the outlet straight pipe. The telescopic assembly is fixedly connected to the jacket, and the telescopic assembly has a piston rod that can telescopically move in the vertical direction. The piston rod of the telescopic assembly is fixedly connected to the annular member.

[0011] In a possible implementation, the inner side wall of the closing pipe has an inwardly protruding connecting portion, and the connecting portion is provided with a threaded hole with a vertically arranged axis line. The chlorination reactor further includes a connecting bolt. The screw rod of the connecting bolt is used to penetrate through the annular member and is used to be threadedly connected to the threaded hole.

[0012] In a possible implementation, the chlorination reactor further includes a fixing member and a filter screen. The fixing member is located in the heat exchange tank. The fixing member is sleeved outside the connecting pipe and fixedly connected to the connecting pipe. The fixing member is provided with a plurality of ventilation holes. The filter screen is attached to the fixing member, and the filter screen covers all the ventilation holes.

[0013] In a possible implementation, the chlorination reactor further includes a water outlet pipe and a switching valve. One end of the water outlet pipe is fixedly connected to the jacket and communicates with the bottom inside the jacket. The switching valve is provided at the other end of the water outlet pipe.

[0014] In the embodiment of the present application, steam is introduced into the jacket through the steam pipe, and the steam escapes from the steam outlet pipe. During this process, the steam heats the inside of the kettle body. When the heating temperature of a certain area inside the kettle body where the chlorination reaction is carried out is insufficient, the driving assembly drives the sliding ring to slide into the horizontal space where the area is located, and then a suitable electric heating rod is started to heat the area, so as to avoid the problem that the heating temperature of some areas inside the kettle body where the chlorination reaction is carried out is insufficient, thereby affecting the chlorination reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 Structural schematic diagram of the chlorination reactor provided by the embodiment of the present invention; Figure 2 For Figure 1 Enlarged structural schematic diagram of the partial A in; Figure 3 Cross-sectional structural schematic diagram of the chlorination reactor provided by the embodiment of the present invention; Figure 4 For Figure 3 Enlarged structural schematic diagram of the partial B in; Figure 5 For Figure 3 Enlarged structural schematic diagram of the partial C in; Figure 6 Structural schematic diagram of the kettle body and the jacket of the chlorination reactor provided by the embodiment of the present invention after connection; Figure 7 Structural schematic diagram of the kettle body of the chlorination reactor provided by the embodiment of the present invention; Figure 8 Structural schematic diagram of the sliding ring and the electric heating rod of the chlorination reactor provided by the embodiment of the present invention after connection.

[0017] In the figure: 1. Kettle body; 11. Protruding part; 12. Maintenance hole; 2. Jacket; 3. Steam pipe; 4. Steam outlet pipe; 5. Sliding ring; 51. Annular cavity; 61. Annular part; 62. Telescopic assembly; 7. Electric heating rod; 8. Blowing pipe; 81. First vertical section; 82. Second vertical section; 9. Air outlet straight pipe; 10. Connecting pipe; 100. Upper end plate; 110. Lower end plate; 1101. Ventilation hole; 120. Blower; 130. Heat absorbing part; 1301. Heat exchange tank; 1302. Heat exchange cavity; 140. Cold water pipe; 150. Return water pipe; 160. Sealing pipe; 1601. Connecting part; 16011. Threaded hole; 170. Connecting bolt; 180. Fixing part; 1801. Ventilation hole; 190. Filter screen; 20. Water outlet pipe; 200. Switch valve. Detailed implementation mode

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] It should be further noted that the drawings and embodiments of the present invention mainly describe and explain the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be completely described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can adopt well-known methods to implement the above specific forms and settings.

[0020] When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0021] The orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, and "several" means one or more, unless otherwise specifically defined.

[0023] Please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 8 together, and now a chlorination reactor provided by the present invention will be described. The chlorination reactor includes a reactor body 1, a jacket 2, a steam pipe 3, an outlet pipe 4, a sliding ring 5, a driving assembly, and a plurality of electric heating rods 7. The jacket 2 is sleeved outside the reactor body 1 and fixedly connected to the reactor body 1. One end of the steam pipe 3 is fixedly connected to the jacket 2 and communicates with the bottom inside the jacket 2. One end of the outlet pipe 4 is fixedly connected to the jacket 2 and communicates with the top inside the jacket 2. The sliding ring 5 is located inside the jacket 2 and is slidably sleeved outside the reactor body 1 in the vertical direction. The sliding ring 5 has an annular cavity 51 formed around the reactor body 1, and the annular cavity 51 penetrates the sliding ring 5 towards the reactor body 1. The driving assembly is used to drive the sliding ring 5 to slide. A plurality of electric heating rods 7 are located inside the annular cavity 51 and are evenly distributed around the reactor body 1, and the electric heating rods 7 are fixedly connected to the sliding ring 5.

[0024] Compared with the prior art, for the chlorination reactor provided by the present invention, steam is introduced into the jacket 2 through the steam pipe 3, and the steam escapes from the outlet pipe 4. During this process, the steam heats the inside of the reactor body 1. When the heating temperature of a certain area inside the reactor body 1 where the chlorination reaction takes place is insufficient, the driving assembly drives the sliding ring 5 to slide into the horizontal space where the area is located, and then a suitable electric heating rod 7 is started to heat the area, thereby avoiding the problem that the chlorination reaction is affected due to insufficient heating temperature in some areas inside the reactor body 1.

[0025] In this embodiment, some or all of the electric heating rods 7 can be selected to be started according to the range of the area with insufficient heating temperature inside the reactor body 1.

[0026] In some embodiments, a plurality of temperature sensors fixedly connected to the reactor body 1 can be arranged inside the reactor body 1, and the plurality of temperature sensors are distributed in different areas inside the reactor body 1, so as to sense which areas have insufficient heating temperature.

[0027] In some embodiments, refer to Figure 1 、 Figure 3 and Figure 4, the chlorination reactor further includes a blowing pipe 8 and an outlet straight pipe 9. The blowing pipe 8 has a first vertical section 81 arranged vertically. The first vertical section 81 is fixedly arranged on the sliding ring 5 and communicated with the annular cavity 51. The first vertical section 81 slidably penetrates the jacket 2, and the blowing pipe 8 is used for introducing air flow. The outlet straight pipe 9 is arranged vertically. The outlet straight pipe 9 is fixedly arranged on the sliding ring 5 and communicated with the annular cavity 51. The outlet straight pipe 9 slidably penetrates the jacket 2. During the chlorination reaction, heat is released, resulting in too high temperature in some areas. The heat in these areas will be conducted to the kettle body 1. At this time, the driving assembly drives the sliding ring 5 to slide to a suitable area, introduces air flow into the blowing pipe 8, the air flow flows into the annular cavity 51, and then flows out from the outlet straight pipe 9. During this process, the heat on the kettle body 1 will be carried away. Moreover, when the chlorination reaction is completed, the product in the kettle body 1 needs to be cooled. By sliding the sliding ring 5 and introducing air flow into the blowing pipe 8, the cooling of the product in the kettle body 1 can also be accelerated.

[0028] In some embodiments, in order to introduce air flow into the blowing pipe 8, refer to Figure 1 , Figure 3 and Figure 5 , the chlorination reactor further includes a connecting pipe 10, an upper end plate 100, a lower end plate 110 and a blower 120. The connecting pipe 10 is arranged vertically. The upper end plate 100 is fixedly attached to the upper end surface of the connecting pipe 10. The lower end plate 110 is fixedly attached to the lower end surface of the connecting pipe 10. The lower end plate 110 is provided with a ventilation hole 1101 communicated with the connecting pipe 10. The blower 120 is fixedly arranged on the lower end plate 110, and the air outlet of the blower 120 is communicated with the ventilation hole 1101. Wherein, the blowing pipe 8 further has a second vertical section 82 arranged vertically. The second vertical section 82 slidably penetrates through the upper end plate 100 so that the lower end of the second vertical section 82 is located in the connecting pipe 10. The air outlet of the blower 120 blows air into the connecting pipe 10, and the formed air flow flows into the second vertical section 82.

[0029] In some embodiments, refer to Figure 1 , Figure 3 and Figure 5, the chlorination reactor further includes a heat absorber 130, a cold water pipe 140, and a return water pipe 150. The top surface of the heat absorber 130 is provided with a heat exchange groove 1301, and the heat absorber 130 is provided with a heat exchange cavity 1302. The longitudinal section of the heat exchange cavity 1302 is in a U-shaped structure, and the heat exchange cavity 1302 is sleeved outside the heat exchange groove 1301. One end of the cold water pipe 140 is fixedly connected to the heat absorber 130 and communicates with the bottom of the heat exchange cavity 1302. One end of the return water pipe 150 is fixedly connected to the heat absorber 130 and communicates with the top of the heat exchange cavity 1302. Among them, the lower end of the connecting pipe 10 is located in the heat exchange groove 1301 and is fixedly connected to the heat absorber 130. The free ends of the cold water pipe 140 and the return water pipe 150 are respectively communicated with the water outlet and the water return port of the water chiller, so that cold water can be injected into the heat exchange cavity 1302. After the blower 120 is started, the outside air enters the heat exchange groove 1301 and then flows into the connecting pipe 10 through the blower 120. During this process, the cold water in the heat exchange cavity 1302 exchanges heat with the gas entering the heat exchange groove 1301, so that the temperature of the gas entering the connecting pipe 10 is relatively low, and thus the temperature in the kettle body 1 can be better reduced.

[0030] In some embodiments, referring to Figure 3 , Figure 6 and Figure 7 , the top wall of the jacket 2 is located above the side wall of the kettle body 1. The side wall of the kettle body 1 has several upwardly protruding protrusions 11, and the protrusions 11 are fixedly connected to the top wall of the jacket 2, so as to form several maintenance holes 12 between the side wall of the kettle body 1 and the top wall of the jacket 2. When the electric heating rod 7 needs to be repaired or replaced, the sliding ring 5 is slid upward until the annular cavity 51 communicates with the maintenance hole 12, and then the electric heating rod 7 can be repaired and replaced through the maintenance hole 12.

[0031] In some embodiments, referring to Figure 1 and Figure 3 , the chlorination reactor further includes a closing pipe 160. The axis line of the closing pipe 160 is vertically arranged. The closing pipe 160 is slidably penetrated through the top wall of the jacket 2 in the vertical direction and placed on the kettle body 1, so that the closing pipe 160 can block several maintenance holes 12, thereby preventing foreign impurities from entering the jacket 2 or the annular cavity 51. When the electric heating rod 7 needs to be repaired or replaced, first make the closing pipe 160 slide upward to disengage from the top wall of the jacket 2.

[0032] In some embodiments, the above-mentioned feature driving assembly can adopt the structure as shown in Figure 1 . Referring to Figure 1The driving assembly includes an annular member 61 and a telescopic assembly 62. The annular member 61 is fixedly connected to both the air blowing pipe 8 and the air outlet straight pipe 9. The telescopic assembly 62 is fixedly connected to the jacket 2, and the telescopic assembly 62 has a piston rod that can be telescoped in the vertical direction, and the piston rod of the telescopic assembly 62 is fixedly connected to the annular member 61. The telescopic movement of the piston rod of the telescopic assembly 62 drives the air blowing pipe 8 and the air outlet straight pipe 9 to rise and fall through the annular member 61, thereby driving the sliding ring 5 to slide. In this embodiment, the telescopic assembly 62 can be one of an electric push rod, a cylinder or a hydraulic cylinder. Two telescopic assemblies 62 can be provided.

[0033] In some embodiments, see Figure 1 and Figure 2 The inner side wall of the closed tube 160 has a connecting portion 1601 protruding inward, and the connecting portion 1601 is provided with a threaded hole 16011 vertically arranged with the axis center line, and the chlorination reaction kettle also includes a connecting bolt 170. The screw of the connecting bolt 170 is used to penetrate the ring member 61 and is used to be threadedly connected in the threaded hole 16011. When the electric heating rod 7 needs to be repaired or replaced, the ring member 61 is lowered to a suitable height by the expansion and contraction of the piston rod of the telescopic assembly 62, and then the screw of the connecting bolt 170 is inserted into the ring member 61 and threadedly connected in the threaded hole 16011. At this time, the head of the connecting bolt 170 is located above the ring member 61. When the expansion and contraction of the piston rod of the telescopic assembly 62 causes the sliding ring 5 to move upward, the ring member 61 can support the head of the connecting bolt 170 to move upward, thereby driving the closed tube 160 to slide upward and disengage from the top wall of the closed sleeve. In this embodiment, two groups of connecting portions 1601 and connecting bolts 170 can be provided.

[0034] In some embodiments, see Figure 3 and Figure 5 The chlorination reactor also includes a fixing member 180 and a filter 190. The fixing member 180 is located in the heat exchange tank 1301, and the fixing member 180 is sleeved outside the connecting pipe 10 and fixedly connected to the connecting pipe 10. The fixing member 180 is provided with a plurality of air holes 1801. The filter 190 is fitted on the fixing member 180, and the filter 190 covers all the air holes 1801. The connecting pipe 10 is fixedly connected to the heat absorbing member 130 through the fixing member 180. The outside air is filtered by the filter 190, passes through the air holes 1801, and then flows into the connecting pipe 10 through the blower 120.

[0035] In some embodiments, see Figure 3 The chlorination reactor further comprises a water outlet pipe 20 and a switch valve 200. One end of the water outlet pipe 20 is fixedly connected to the jacket 2 and communicated with the bottom of the jacket 2. The switch valve 200 is arranged at the other end of the water outlet pipe 20. Part of the steam will condense into water in the jacket 2, and the water in the jacket 2 can be made to flow out from the water outlet pipe 20 by opening the switch valve 200.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. Chlorination reaction kettle, characterized in that, include: Kettle body; A jacket, which is sleeved outside the kettle body and fixedly connected to the kettle body; A steam pipe, one end of which is fixedly connected to the jacket and communicated with the bottom of the jacket; A steam outlet pipe, one end of which is fixedly connected to the jacket and communicated with the top of the jacket; A sliding ring is located in the jacket and is slidably sleeved on the outside of the kettle body in a vertical direction, wherein the sliding ring has an annular cavity arranged outside the kettle body, and the annular cavity penetrates the sliding ring in the direction of the kettle body; A driving assembly, used for driving the sliding ring to slide; as well as A plurality of electric heating rods are located in the annular cavity and are evenly distributed around the kettle body, and the electric heating rods are fixedly connected to the sliding ring.

2. The chlorination reaction kettle according to claim 1, characterized in that: Also includes: The air blowing pipe has a vertically arranged first vertical section, the first vertical section is fixed on the sliding ring and communicated with the annular cavity, the first vertical section slides through the jacket, and the air blowing pipe is used to introduce air flow; The straight air outlet pipe is vertically arranged, fixed on the sliding ring and communicated with the annular cavity, and the straight air outlet pipe slides through the jacket.

3. The chlorination reaction kettle according to claim 2, characterized in that: Also includes: The connecting pipe is arranged vertically; An upper end plate, fixedly mounted on the upper end surface of the connecting pipe; A lower end plate is fixedly mounted on the lower end surface of the connecting pipe, and the lower end plate is provided with a ventilation hole connected with the connecting pipe; A blower is fixedly mounted on the lower end plate, and an air outlet of the blower is connected to the ventilation hole; The blowing pipe further comprises a second vertical section which is vertically arranged, and the second vertical section is slidably arranged in the upper end plate so that the lower end of the second vertical section is located in the connecting pipe.

4. The chlorination reaction kettle according to claim 3, characterized in that: Also includes: A heat absorbing member, the top surface of which is provided with a heat exchange groove, a heat exchange cavity is provided inside the heat absorbing member, the longitudinal section of the heat exchange cavity is a U-shaped structure, and the heat exchange cavity is sleeved outside the heat exchange groove; A cold water pipe, one end of which is fixedly connected to the heat absorbing element and communicated with the bottom of the heat exchange cavity; A water return pipe, one end of which is fixedly connected to the heat absorbing element and communicated with the top of the heat exchange chamber; Wherein, the lower end of the connecting pipe is located in the heat exchange tank and is fixedly connected to the heat absorbing component.

5. The chlorination reaction kettle according to claim 4, characterized in that: The top wall of the jacket is located above the side wall of the kettle body, and the side wall of the kettle body has a plurality of protrusions protruding upwards, and the protrusions are fixedly connected to the top wall of the jacket, so that the side wall of the kettle body and the top wall of the jacket form a plurality of maintenance holes.

6. The chlorination reaction kettle according to claim 5, characterized in that: Also includes: The closed tube has a vertical axis, and is slidably penetrated into the top wall of the jacket along a vertical direction and is placed on the kettle body, so that the closed tube can block a plurality of the maintenance holes.

7. The chlorination reaction kettle according to claim 6, characterized in that: The drive assembly comprises: An annular member, fixedly connected to the air blowing pipe and the air outlet straight pipe; A telescopic assembly is fixedly connected to the jacket, wherein the telescopic assembly has a piston rod that can be telescoped in a vertical direction, and the piston rod of the telescopic assembly is fixedly connected to the annular member.

8. The chlorination reaction kettle according to claim 7, characterized in that: The inner side wall of the closed tube has a connecting portion protruding inwardly, and the connecting portion is provided with a threaded hole arranged vertically with the axis center line. The chlorination reaction kettle also includes: The connecting bolt and the screw rod are used to penetrate the annular member and to be threadedly connected in the threaded hole.

9. The chlorination reaction kettle according to claim 4, characterized in that: Also includes: A fixing member is located in the heat exchange tank, the fixing member is sleeved outside the connecting pipe and is fixedly connected to the connecting pipe, and the fixing member is provided with a plurality of air holes; The filter screen is fitted on the fixing member, and the filter screen covers all the air holes.

10. The chlorination reaction kettle according to claim 1, characterized in that: Also includes: A water outlet pipe, one end of which is fixedly connected to the jacket and communicated with the bottom of the jacket; The switch valve is arranged at the other end of the water outlet pipe.

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