A phenylethyl malonate reaction heating device capable of uniform heating

Abstract

The present application relates to phenylethyl malonic acid diethyl ester heating technical field, specifically, it is a kind of phenylethyl malonic acid diethyl ester reaction heating device capable of uniform heating.It includes heating tank, feeding opening, discharge port and heater, heating tank is fixedly provided with sleeve inside, the sleeve is used to separate the inner wall of heating tank and sleeve into liquid storage cavity and shunt cavity, liquid storage cavity is located above shunt cavity, auxiliary liquid mixing stirring mechanism is arranged in the inner ring of sleeve, reciprocating mechanism is arranged at the top end of sleeve inside and the end of stirring mechanism.Liquid inside the sleeve is guided into the liquid storage cavity, then steam in the heater flows outward through shunt ring and steam pipe, the flowing steam can continuously conduct heat to the shunt ring, the shunt ring conducts heat to the sprayed liquid, and the sprayed liquid is divided into two streams under the action of shunt ring, so that the contact area of liquid and shunt ring is increased, thereby improving the efficiency of heat transfer and enhancing the uniformity of heat conduction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of phenylethyl malonic acid diethyl ester heating, in particular to a phenylethyl malonic acid diethyl ester reaction heating device capable of uniform heating. BACKGROUND

[0002] Phenylethyl malonic acid diethyl ester is a chemical with a molecular formula of C15H20O4. It is a transparent liquid. It is an organic synthesis raw material and is used as an intermediate for phenobarbital, primidone and other drugs. During the synthesis of phenylethyl malonic acid diethyl ester, a uniform heating device for the phenylethyl malonic acid diethyl ester reactor is needed.

[0003] There are many heating devices in the prior art, for example:

[0004] Chinese patent publication No. CN211988607U discloses a uniform heating device for a phenylethyl malonic acid diethyl ester reactor, which comprises an upper end cover, a fixed shell, a control panel, thermal insulation cotton, a reaction bin, a mounting sleeve, a heat-resistant sealing gasket, a heating rod, a heating plate and a temperature regulator. The fixed shell is installed on the lower side of the upper end cover, the control panel is installed on the front side of the annular side surface of the fixed shell, the reaction bin is installed in the fixed shell, the thermal insulation cotton is filled in the connection part of the fixed shell and the reaction bin, the mounting sleeve is installed in the reaction bin, the heating rod is installed in the mounting sleeve, the heat-resistant sealing gasket is installed in the connection part of the mounting sleeve and the heating rod, the heating plate is installed in the lower end surface of the reaction bin, and the temperature regulator is installed on the lower end surface of the heating plate.

[0005] Most of the existing heating devices horizontally arrange a spiral heating pipe at the bottom of the tank or annularly arrange a spiral heating pipe around the tank to heat the liquid. However, when the spiral heating pipe is horizontally arranged, the lower layer of the liquid is heated quickly and the upper layer is heated slowly. When the spiral heating pipe is annularly arranged, the outer edge of the liquid is heated quickly and the inner edge is heated slowly. Moreover, the horizontally arranged or annularly arranged spiral heating pipe is in a fixed state. Although the internal liquid can be mixed by stirring, the liquid forms a vortex under the action of stirring. The flow rate of the vortex center (usually close to the stirring shaft) is fast, while the flow rate of the vortex edge is slow, resulting in a temperature difference between the vortex center and the area far from the stirring shaft. When the liquid level after forming the vortex is higher than the spiral heating pipe, the liquid level that is higher needs a longer time for heat conduction, thereby causing the phenomenon of uneven heating of the liquid. SUMMARY

[0006] The present application aims to provide a phenylethyl malonic acid diethyl ester reaction heating device capable of uniform heating to solve the problems raised in the background art.

[0007] In order to achieve the above object, the present application aims to provide a phenylethylmalonate diethyl ester reaction heating device capable of uniform heating, comprising a heating tank, a feeding port, a discharging port and a heater, a sleeve is fixedly arranged inside the heating tank, the sleeve is used for separating the inner wall of the heating tank and the sleeve into a liquid storage cavity and a shunt cavity, the liquid storage cavity is located above the shunt cavity, a stirring mechanism for assisting liquid mixing is arranged on the inner ring of the sleeve, a reciprocating mechanism is arranged at the top end inside the sleeve and located at the end of the stirring mechanism, an I-shaped piece is arranged at the top end inside the liquid storage cavity, a liquid injection mechanism is slidably arranged in the shunt cavity, when the liquid on the inside of the sleeve flows into the liquid storage cavity, the reciprocating mechanism is compressed by the stirring action of the stirring mechanism, the compressed air sprays the liquid in the liquid storage cavity into the shunt cavity in the form of a water column.

[0008] A shunt ring in communication with the heater is fixedly arranged inside the shunt cavity, the shunt ring is used for dividing the sprayed liquid into two streams, and the heater is used for heating the liquid by steam delivered into the shunt ring, when the liquid in the liquid storage cavity is sprayed, the heated liquid is pressed to the inside of the sleeve by the movement of the liquid injection mechanism, so that the heated liquid is mixed with the liquid on the inside of the sleeve.

[0009] As a further improvement of the technical solution, a plurality of liquid inlet ports in communication with the liquid storage cavity are arranged on the sleeve in an array.

[0010] As a further improvement of the technical solution, the stirring mechanism comprises a motor fixed at the top end of the heating tank, a vertical rod penetrating through the heating tank is coaxially connected to the output shaft of the motor, a plurality of inclined blades are fixedly arranged on the outer ring of the vertical rod to provide an upward thrust for the reciprocating mechanism when rotating.

[0011] As a further improvement of the technical solution, the reciprocating mechanism is a piston rod close to the end of the blade and close to the liquid inlet port, a ball is arranged at the bottom of the piston rod, a piston cylinder fixedly arranged on the inner wall of the sleeve is fitted on the top of the piston rod, the bottom of the piston cylinder is inwardly bent and forms an opening with an inner diameter smaller than that of the top end of the piston rod.

[0012] As a further improvement of the technical solution, the top of the piston cylinder is respectively communicated with a gas delivery pipe and a gas guide pipe, the gas delivery pipe penetrates through the heating tank and is in communication with the outside air, the gas guide pipe is in communication with the top of the liquid storage cavity, a first one-way valve is arranged in each of the gas delivery pipe and the gas guide pipe, the first one-way valve in the gas delivery pipe is used for allowing the outside air to enter the piston cylinder, and the first one-way valve in the gas guide pipe is used for delivering the compressed air in the piston cylinder to the liquid storage cavity.

[0013] As a further improvement of the technical solution, the first protrusion is fixedly arranged in the liquid storage cavity on the outer wall of the sleeve, the first protrusion is used to form a wide upper end and a narrow lower end inside the liquid storage cavity, when the I-shaped workpiece moves downward, the I-shaped workpiece is matched with the narrow end bottom to press the liquid in the liquid storage cavity out of the shunt cavity, the second protrusion is elastically connected between the top of the I-shaped workpiece and the inner wall of the liquid storage cavity, the top of the liquid storage cavity is flush with the lower edge of the liquid inlet in the horizontal direction, and the top of the liquid storage cavity is arc-shaped, so that when the I-shaped workpiece moves upward, the first protrusion between the bottom of the I-shaped workpiece forms a gap for the liquid to flow into the liquid storage cavity.

[0014] As a further improvement of the technical solution, the bottom of the liquid storage cavity located directly above the shunt ring is provided with a spray head, and the top end of the shunt ring is communicated with a plurality of steam pipes penetrating the outer wall of the heating pot, when the steam in the shunt ring is in a flowing state, the shunt ring heats the liquid.

[0015] As a further improvement of the technical solution, the liquid injection mechanism includes a liquid injection plate arranged on the inner side of the shunt ring and sleeved on the outer wall of the sleeve, and a partition plate fixedly arranged on the liquid injection plate, the liquid injection plate extends into the shunt ring and isolates the steam in the shunt ring, the top of the liquid injection plate is matched with a gas storage ring, the gas storage ring is fixedly arranged on the sleeve, the gas storage ring and the liquid storage cavity are communicated with a gas supply pipe penetrating the heating pot and the shunt ring, the gas supply pipe is used to guide compressed air into the gas storage ring to push the liquid injection plate to move downward, and the gas storage ring and the liquid injection plate are elastically connected with a return spring.

[0016] As a further improvement of the technical solution, a return flow hole is formed in the sleeve above the communication position of the shunt ring and the water storage cavity, the return flow hole has a third one-way valve for guiding the liquid in the shunt cavity into the inner side of the sleeve, the inner side of the shunt ring is fixedly provided with a second protrusion corresponding to the return flow hole, the second protrusion is penetrated by a liquid guide pipe for communicating the inner side of the shunt ring with the outer side of the shunt ring, the liquid guide pipe is used to guide the liquid on the outer side of the shunt ring into the inner side of the shunt ring, the top of the second protrusion and the partition plate leave a liquid discharge channel for the liquid to flow through, and the second protrusion is matched with the partition plate.

[0017] A through groove is formed in the liquid injection plate at the position corresponding to the return flow hole, the lower edge of the through groove is higher than the return flow hole in the horizontal direction and forms an obstruction to the return flow hole, when the liquid injection plate moves downward, the bottom of the liquid injection plate extends into the shunt ring to reduce the steam flow channel.

[0018] As a further improvement of the technical solution, the top of the gas storage ring is communicated with an exhaust pipe penetrating the shunt ring and the heating pot, the exhaust pipe is provided with a second one-way valve for guiding the air in the gas storage ring to the outside, and the diameter of the exhaust pipe is smaller than the diameter of the gas supply pipe.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1. The phenylethyl malonate diethyl ester reaction heating device capable of uniform heating, the liquid inside the sleeve is guided into the liquid storage cavity, and then the steam in the heater flows outward through the flow dividing ring and the steam pipe, the flowing steam can continuously conduct heat to the flow dividing ring, the flow dividing ring conducts heat to the sprayed liquid, and under the action of the flow dividing ring, the sprayed liquid is divided into two streams, so that the contact area of the liquid with the flow dividing ring is increased, thereby improving the heat transfer efficiency and enhancing the uniformity of heat conduction.

[0021] 2. The phenylethyl malonate diethyl ester reaction heating device capable of uniform heating, the flow of steam inside the flow dividing ring is intercepted by the downward movement of the liquid injection plate, the flow path of the steam inside the flow dividing ring is reduced to increase the flow rate of the steam inside the flow dividing ring, so that the newly generated steam can be discharged from the top end of the flow dividing ring faster, thereby reducing the temperature difference inside the flow dividing ring and improving the uniformity of liquid heating. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present application;

[0023] Figure 2 is a schematic diagram of the internal structure of the heating tank and sleeve of the present application;

[0024] Figure 3 is an exploded structure schematic diagram of the motor and reciprocating mechanism of the present application;

[0025] Figure 4 is an enlarged structure schematic diagram of A in the present application; Figure 2

[0026] Figure 5 is a schematic diagram of the internal structure of the heating tank and sleeve of the present application;

[0027] Figure 6 is a schematic diagram of the internal structure of the flow dividing ring, liquid guide pipe and second protrusion of the present application;

[0028] Figure 7 is a schematic diagram of the internal structure of the heating tank, sleeve, flow dividing ring and gas supply pipe of the present application;

[0029] Figure 8 is a schematic diagram of the internal structure of the gas storage ring and liquid injection plate of the present application;

[0030] Figure 9 is an enlarged structure schematic diagram of B in the present application. Figure 7

[0031] Meaning of each number in the figure:

[0032] 100, heating tank; 101, charging port; 102, discharge port; 103, heater; ​​

[0033] 110, sleeve; 111, liquid storage cavity; 200, first protrusion; 112, distribution cavity; 113, water storage cavity; 114, liquid inlet; 115, liquid guide pipe; 116, backflow hole; 117, exhaust pipe; 118, second one-way valve; 119, third one-way valve;

[0034] 120, stirring mechanism; 121, motor; 122, blade; 123, vertical rod;

[0035] 130, reciprocating mechanism; 131, piston rod; 132, piston cylinder; 133, gas delivery pipe; 134, first one-way valve;

[0036] 140, I-shaped piece; 141, distribution ring; 142, gas supply pipe; 143, second protrusion; 144, steam pipe;

[0037] 150, liquid injection mechanism; 151, liquid injection plate; 152, partition plate; 153, through slot;

[0038] 160, gas storage ring; 161, return spring. DETAILED DESCRIPTION

[0039] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0042] As Figure 1 ,Figure 2 、 Figure 3 and Figure 7 As shown in the figure, a phenylethyl malonate diethyl ester reaction heating device capable of uniform heating is provided, comprising a heating tank 100, a feeding port 101, a discharging port 102 and a heater 103. A sleeve 110 is fixedly arranged inside the heating tank 100. The sleeve 110 is used to separate the inner wall of the heating tank 100 and the sleeve 110 into a liquid storage cavity 111 and a shunt cavity 112. The liquid storage cavity 111 is located above the shunt cavity 112. An auxiliary liquid mixing stirring mechanism 120 is arranged on the inner ring of the sleeve 110. A reciprocating mechanism 130 is arranged at the top end inside the sleeve 110 and at the end of the stirring mechanism 120. A profiled piece 140 is arranged at the top end inside the liquid storage cavity 111. A liquid injection mechanism 150 is slidably arranged in the shunt cavity 112. When the liquid inside the sleeve 110 flows into the liquid storage cavity 111, the reciprocating mechanism 130 compresses air through the stirring action of the stirring mechanism 120. The compressed air sprays the liquid in the liquid storage cavity 111 in the form of a water column into the shunt cavity 112.

[0043] A shunt ring 141 is fixedly arranged inside the shunt cavity 112 and communicates with the heater 103. The shunt ring 141 is used to divide the sprayed liquid into two streams and heat the liquid using the steam supplied by the heater 103 into the shunt ring 141. When the liquid in the liquid storage cavity 111 is sprayed, the heated liquid is pressed into the inside of the sleeve 110 through the movement of the liquid injection mechanism 150, so that the heated liquid is mixed with the liquid inside the sleeve 110.

[0044] That is, after the liquid is added into the inside of the sleeve 110, the lower end of the liquid and the warm water in the water storage cavity 113 are heated by the heater 103, and then the liquid is stirred by the stirring mechanism 120. During the process, the reciprocating mechanism 130 moves up and down to compress air. The compressed air simultaneously pushes the profiled piece 140 and the liquid injection mechanism 150 to move. The profiled piece 140 sprays the liquid in the liquid storage cavity 111 (the liquid is the liquid that flows into the liquid storage cavity 111 from the inside of the sleeve 110, please refer to the following figure) into the shunt ring 141. The sprayed liquid is heated by the steam flowing in the shunt ring 141. After heating is completed, the heated liquid is back-pressed into the liquid inside the sleeve 110 by the liquid injection mechanism 150, so as to be uniformly mixed with the liquid, thereby reducing the temperature difference between the upper and lower liquids.

[0045] First, in combination with Figure 4As shown, the reason why the liquid inside the sleeve 110 can flow into the liquid storage cavity 111 is that a plurality of liquid inlets 114 are arranged in an array on the sleeve 110 and communicate with the liquid storage cavity 111, so when the liquid level inside the sleeve 110 is slightly lower than the lower edge of the liquid inlet 114, the stirring mechanism 120 forms a vortex in the liquid inside the sleeve 110 by stirring, which makes the liquid level in contact with the inner wall of the sleeve 110 lower than that in the calm state, and the liquid level outside the vortex higher than that in the calm state, and then the liquid with the higher level flows into the liquid storage cavity 111 through the liquid inlet 114 and is stored.

[0046] Then, based on the above structure, it is returned to Figure 3 Further, the structure of the stirring mechanism 120 is disclosed, which includes a motor 121 fixed at the top end of the heating tank 100, and a vertical rod 123 coaxially connected with the output shaft of the motor 121 and penetrating the heating tank 100, and a plurality of inclined blades 122 fixedly arranged on the outer ring of the vertical rod 123 to provide an upward thrust for the reciprocating mechanism 130 when rotating.

[0047] And the reciprocating mechanism 130 is a piston rod 131 close to the end of the blade 122 and close to the liquid inlet 114, and the bottom of the piston rod 131 is provided with a ball, and the top is sleeved with a piston cylinder 132 fixedly arranged on the inner wall of the sleeve 110, and the bottom of the piston cylinder 132 is inwardly bent and forms an opening with an inner diameter smaller than that of the top end of the piston rod 131, which is to limit the piston rod 131 from falling out of the piston cylinder 132 when the piston rod 131 moves downward.

[0048] Secondly, the top of the piston cylinder 132 is respectively communicated with a gas delivery pipe 133 and a gas guide pipe, the gas delivery pipe 133 penetrates the heating tank 100 and communicates with the outside air, and the gas guide pipe communicates with the top of the liquid storage cavity 111, and a first one-way valve 134 is arranged in each of the gas delivery pipe 133 and the gas guide pipe, the first one-way valve 134 in the gas delivery pipe 133 is used for allowing the outside air to enter the piston cylinder 132, and the first one-way valve 134 in the gas guide pipe is used for delivering the compressed air in the piston cylinder 132 to the liquid storage cavity 111, and the specific principle is as follows:

[0049] When the blade 122 rotates, the ball at the bottom of the piston rod 131 slides along the inclined surface of the blade 122, and the piston rod 131 reciprocates with the movement, and in the process of moving downward, the piston rod 131 sucks the gas into the piston cylinder 132 through the gas delivery pipe 133, and in the process of moving upward, the piston rod 131 delivers the gas in the piston cylinder 132 to the liquid storage cavity 111 through the gas guide pipe, so as to increase the air pressure inside the liquid storage cavity 111 to push the I-shaped piece 140 to move downward and spray the liquid in the liquid storage cavity 111.

[0050] In addition, in order to ensure that the work piece 140 can smoothly press the liquid inside the liquid storage cavity 111 into the distribution cavity 112, and not affect the liquid inside the sleeve 110 to flow into the liquid storage cavity 111 through the liquid inlet 114, for this purpose, in combination with Figure 5 As shown, a first protrusion 200 is fixedly arranged in the liquid storage cavity 111 on the outer wall of the sleeve 110, the first protrusion 200 is used to form a wide upper end and a narrow lower end inside the liquid storage cavity 111, wherein when the work piece 140 moves downward, the work piece 140 is sleeved and matched with the narrow end bottom to press the liquid in the liquid storage cavity 111 out into the distribution cavity 112, the second protrusion 143 is elastically connected between the top of the work piece 140 and the inner wall of the liquid storage cavity 111, the top of the liquid storage cavity 111 is flush with the lower edge of the liquid inlet 114 in the horizontal direction, and the top of the liquid storage cavity 111 is arc-shaped, so as to form a gap between the first protrusion 200 on the bottom of the work piece 140 for the liquid to flow into the liquid storage cavity 111 when the work piece 140 moves upward.

[0051] It should be noted that: since the distribution cavity 112 is in a closed state, when the liquid in the liquid storage cavity 111 is sprayed into the distribution cavity 112, the air in the distribution cavity 112 needs to be discharged outward, therefore, an exhaust valve is arranged on the heating tank 100 at the top end of the distribution cavity 112, so that the air in the distribution cavity 112 is discharged from the exhaust valve during the process of spraying the liquid into the distribution cavity 112.

[0052] Further, returning to Figure 2 In combination with Figure 6 As shown, when the liquid is sprayed from the liquid storage cavity 111 into the distribution cavity 112, the steam in the heater 103 fills the entire distribution ring 141, and the steam is used to heat the sprayed liquid, so that the bottom of the liquid storage cavity 111 located directly above the distribution ring 141 is provided with a spray head, the small holes of the spray head are in a sparse state, so that the sprayed liquid is columnar, the top end of the distribution ring 141 is communicated with a plurality of steam pipes 144 which penetrate the outer wall of the heating tank 100, and the distribution ring 141 is heated by the steam when the steam in the distribution ring 141 is in a flowing state.

[0053] That is, the steam in the heater 103 flows outward through the distribution ring 141 and the steam pipe 144, the flowing steam can continuously conduct heat to the distribution ring 141, the distribution ring 141 conducts heat to the sprayed liquid, and under the action of the distribution ring 141, the sprayed liquid is divided into two streams, so that the contact area between the liquid and the distribution ring 141 is increased, thereby improving the efficiency of heat transfer and enhancing the uniformity of heat conduction.

[0054] Based on Figure 5 , Figure 6 In combination with Figure 7 , Figure 8 And Figure 9As shown, the structure of the liquid injection mechanism 150 is disclosed, which comprises a liquid injection plate 151 located inside the distribution ring 141 and sleeved on the outer wall of the sleeve 110, and a partition plate 152 fixedly arranged on the liquid injection plate 151, the liquid injection plate 151 extends into the distribution ring 141 and isolates the steam in the distribution ring 141, and the top of the liquid injection plate 151 is sleeved and matched with a gas storage ring 160, the gas storage ring 160 is fixedly arranged on the sleeve 110, and the gas storage ring 160 is in communication with the liquid storage cavity 111 through a gas supply pipe 142 penetrating the heating tank 100 and the distribution ring 141, the gas supply pipe 142 is used for guiding compressed air into the gas storage ring 160 to push the liquid injection plate 151 to move downward, and the liquid injection plate 151 and the gas storage ring 160 are elastically connected by a reset spring 161.

[0055] On the other hand, a backflow hole 116 is formed on the sleeve 110 above the position where the distribution ring 141 communicates with the water storage cavity 113, the backflow hole 116 has a third one-way valve 119 inside for the liquid in the distribution cavity 112 to enter the inside of the sleeve 110, a second protrusion 143 corresponding to the backflow hole 116 is fixedly arranged on the inside of the distribution ring 141, a liquid guide pipe 115 penetrating the second protrusion 143 is arranged in the second protrusion 143 to communicate the inside and the outside of the distribution ring 141, the liquid guide pipe 115 is used for guiding the liquid outside the distribution ring 141 into the inside of the distribution ring 141, and a liquid discharge channel is left between the top of the second protrusion 143 and the partition plate 152 for the liquid to flow through, and the second protrusion 143 is sleeved and matched with the partition plate 152.

[0056] That is, the compressed air in the liquid storage cavity 111 can not only push the I-shaped piece 140 to move downward, but also can be transported into the gas storage ring 160 and push the liquid injection plate 151 to move downward, wherein the reason for the downward movement of the liquid injection plate 151 is that the top of the gas storage ring 160 is communicated with an exhaust pipe 117 penetrating the distribution ring 141 and the heating tank 100, the exhaust pipe 117 is internally provided with a second one-way valve 118 for guiding the air in the gas storage ring 160 to the outside, the diameter of the exhaust pipe 117 is smaller than that of the gas supply pipe 142, the air transported into the gas storage ring 160 is divided into two air flows, one air flow is used to push the liquid injection plate 151 to move downward, and the other air flow is used to slowly discharge from the exhaust pipe 117, in this process, the air entering the gas storage ring 160 overcomes the elastic potential energy of the reset spring 161 and the water pressure inside the sleeve 110 and pushes the liquid injection plate 151 to move, so as to press the liquid below the partition plate 152 into the inside of the sleeve 110 for mixing.

[0057] In addition, in order to reduce the temperature difference in different positions of the shunt ring 141, a through groove 153 is formed on the liquid injection plate 151 at a position corresponding to the backflow hole 116, and the lower edge of the through groove 153 is higher than the backflow hole 116 and blocks the backflow hole 116. When the liquid injection plate 151 moves downward, the bottom of the liquid injection plate 151 extends into the shunt ring 141 to reduce the steam flow passage.

[0058] It should be noted that when the bottom of the liquid injection plate 151 extends into contact with the inner wall of the shunt ring 141, the lower edge of the through groove 153 has not yet entered the shunt ring 141, thereby blocking the steam in the shunt ring 141 to prevent the steam in the shunt ring 141 from flowing out of the second protrusion 143. Secondly, when the partition plate 152 moves downward to be lower than the liquid guide pipe 115 in the horizontal direction, the through groove 153 is in a coincident state with the backflow hole 116, and the partition plate 152 can press the liquid into the inside of the sleeve 110.

[0059] In this way, the steam flowing in the shunt ring 141 is intercepted by the downward movement of the liquid injection plate 151, the steam flow passage in the shunt ring 141 is reduced to increase the steam flow rate in the shunt ring 141, so that the newly generated steam can be discharged faster from the top end of the shunt ring 141, thereby reducing the temperature difference in the shunt ring 141 and improving the uniformity of liquid heating. When the partition plate 152 and the I-shaped piece 140 move upward under the elastic action, the I-shaped piece 140 will transport the air above it through the air supply pipe 142, and cooperate with the liquid injection plate 151 to discharge the air from the air exhaust pipe 117 to the outside, and finally open the valve connected to the discharge port 102 to discharge the heated raw material.

[0060] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A heating device for the reaction of diethyl phenylethyl malonate capable of uniform heating, comprising a heating tank, a feed port, a discharge port, and a heater, characterized in that: A sleeve is fixedly installed inside the heating tank. The sleeve is used to separate the inner wall of the heating tank from the sleeve into a liquid storage chamber and a distribution chamber. The liquid storage chamber is located above the distribution chamber. An auxiliary liquid mixing stirring mechanism is set in the inner ring of the sleeve. A reciprocating mechanism is set at the top of the sleeve and at the end of the stirring mechanism. An I-shaped part is set at the top of the liquid storage chamber. A liquid injection mechanism is slidably installed in the distribution chamber. When the liquid inside the sleeve flows into the liquid storage chamber, the stirring action of the stirring mechanism causes the reciprocating mechanism to compress air. The compressed air sprays the liquid in the liquid storage chamber into the distribution chamber in the form of a water column. Inside the flow divider chamber, a flow divider ring connected to the heater is fixedly installed. The flow divider ring is used to divide the ejected liquid into two streams and use the steam supplied by the heater to the flow divider ring to heat the liquid. When the liquid in the storage chamber is ejected, the heated liquid is pressed to the inside of the sleeve by the movement of the liquid injection mechanism, so that the heated liquid mixes with the liquid inside the sleeve. Several liquid inlets communicating with the liquid storage chamber are opened in an array on the sleeve; The stirring mechanism includes a motor fixed to the top of the heating tank. The output shaft of the motor is coaxially connected to a vertical rod that passes through the heating tank. Multiple inclined blades are fixedly arranged on the outer ring of the vertical rod to provide an upward thrust for the reciprocating mechanism when it rotates. The reciprocating mechanism is a piston rod that is close to the end of the blade and close to the liquid inlet. A ball is provided at the bottom of the piston rod, and a piston cylinder that is fixedly installed on the inner wall of the sleeve is sleeved and fitted at the top. The bottom of the piston cylinder is bent inward to form an opening with an inner diameter smaller than the inner diameter of the top of the piston rod. The top of the piston cylinder is connected to a gas supply pipe and a gas guide pipe. The gas supply pipe passes through the heating tank and is connected to the outside air. The gas guide pipe is connected to the top of the liquid storage chamber. Both the gas supply pipe and the gas guide pipe are equipped with a first one-way valve. The first one-way valve in the gas supply pipe is used to allow outside air to enter the piston cylinder, and the first one-way valve in the gas guide pipe is used to deliver the compressed air in the piston cylinder to the liquid storage chamber.

2. The heating device for the reaction of diethyl phenylethyl malonate capable of uniform heating according to claim 1, characterized in that: A first protrusion is fixedly installed inside the liquid storage cavity located on the outer wall of the sleeve. The first protrusion is used to form the interior of the liquid storage cavity as wide at the top and narrow at the bottom. When the I-shaped part moves downward, the I-shaped part engages with the bottom of the narrow end and pushes the liquid in the liquid storage cavity into the diversion cavity. A second protrusion is elastically connected between the top of the I-shaped part and the inner wall of the liquid storage cavity. The top of the liquid storage cavity is level with the lower edge of the liquid inlet in the horizontal direction, and the top of the liquid storage cavity is arc-shaped so that when the I-shaped part moves upward, a gap is formed between the first protrusions at the bottom of the I-shaped part to allow the liquid to flow into the liquid storage cavity.

3. The heating device for the uniform heating of diethyl phenyl ethyl malonate reaction according to claim 1, characterized in that: A nozzle is installed at the bottom of the liquid storage chamber located directly above the distribution ring. Several steam pipes that penetrate the outer wall of the heating tank are connected to the top of the distribution ring. When the steam in the distribution ring is in a flowing state, the distribution ring heats the liquid.

4. The heating device for the uniform heating of diethyl phenyl ethyl malonate reaction according to claim 3, characterized in that: The liquid injection mechanism includes a liquid injection plate located inside the distribution ring and sleeved on the outer wall of the sleeve, and a partition plate fixedly installed on the liquid injection plate. The liquid injection plate extends into the distribution ring and isolates the vapor in the distribution ring. A gas storage ring is sleeved on the top of the liquid injection plate and is fixedly installed on the sleeve. A gas supply pipe that passes through the heating tank and the distribution ring is connected between the gas storage ring and the liquid storage chamber. The gas supply pipe is used to introduce compressed air into the gas storage ring to push the liquid injection plate downward. A return spring is elastically connected between the gas storage ring and the liquid injection plate.

5. The heating device for the reaction of diethyl phenylethyl malonate capable of uniform heating according to claim 4, characterized in that: A reflux hole is provided on the sleeve above the connection between the diversion ring and the water storage chamber. The reflux hole has a third one-way valve inside to allow the liquid in the diversion chamber to enter the inner side of the sleeve. A second protrusion corresponding to the reflux hole is fixedly provided on the inner side of the diversion ring. A liquid guide tube that connects the outer side and the inner side of the diversion ring passes through the second protrusion. The liquid guide tube is used to guide the liquid on the outer side of the diversion ring into the inner side of the diversion ring. A drainage channel for liquid to flow is left between the top of the second protrusion and the partition. The second protrusion and the partition are sleeved together. A through groove is provided on the injection plate at the position corresponding to the return hole. The lower edge of the through groove is higher than the return hole in the horizontal direction and forms a blockage to the return hole. When the injection plate moves downward, the bottom of the injection plate extends into the diversion ring to narrow the passage for steam flow.

6. The heating device for the reaction of diethyl phenylethyl malonate capable of uniform heating according to claim 5, characterized in that: The top of the gas storage ring is connected to an exhaust pipe that runs through the distribution ring and the heating tank. Inside the exhaust pipe is a second one-way valve that introduces air from the gas storage ring to the outside. The diameter of the exhaust pipe is smaller than the diameter of the gas supply pipe.

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