Double-liquid-inlet constant-temperature filter structure

Abstract

The utility model discloses a double-liquid-inlet constant-temperature filter structure which comprises a barrel body, a pipe opening heating channel, an auxiliary heat preservation pipe and a double-temperature-measuring liquid outlet structure, and the pipe opening heating channel is arranged in the side wall of a first liquid inlet pipe, the side wall of a second liquid inlet pipe and the side wall of a liquid outlet pipe. The pipe orifice heating channel is concentrically arranged with the first liquid inlet pipe, the second liquid inlet pipe and the liquid outlet pipe, one end of the pipe orifice heating channel extends to the connecting flange, and the other end of the pipe orifice heating channel penetrates into the heating jacket layer. The reactor is used for mixing various alcohol and ester materials which react at the same temperature, ensuring the relative temperature among a plurality of liquid inlet pipes when a plurality of liquids enter, reducing the temperature difference among the liquid inlet pipes and ensuring that the liquids enter a filter at almost the same temperature, and through the dual effects of an internal heating jacket layer and an external heat preservation jacket layer (heat preservation layer), the liquid can enter the filter at the same temperature. The temperature drop of the auxiliary thermal insulation pipe is reduced.

Description

Technical Field

[0001] This utility model relates to the field of filters, and in particular to a dual-inlet constant temperature filter structure. Background Technology

[0002] In liquid-phase reaction processes, such as in the petrochemical, pharmaceutical, or fine chemical industries, temperature control is particularly important. The various liquids entering the reaction need to exchange heat with the corresponding steam or refrigerant in a heat exchanger under the required temperature conditions. After meeting the temperature requirements of the process, the liquids then enter the filter through the inlet to mix. However, the liquid temperature may fluctuate before entering the filter, making it impossible to adjust the temperature at the multiple inlet positions of the filter.

[0003] In the prior art, Chinese utility model patent application number "CN201410180018.4" discloses an electric insulation structure for a bag filter, which adjusts the position of the liquid inlet by electric heating. However, in both industrialization and testing, the electric heating method has many uncertainties and involves two heating systems: traditional liquid heat exchange and electric heating. This makes debugging and control cumbersome. In addition, extreme temperature conditions are relatively rare in the reaction. The existing filter bushing insulation method makes it difficult to control the temperature inside the multiple liquid inlets due to the large distance between them. Utility Model Content

[0004] The purpose of this invention is to provide a dual-inlet thermostatic filter structure with the advantages of multi-position temperature control, adaptability to filters of different diameters, and reduction of uneven temperature at multiple inlet positions.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a dual-inlet constant-temperature filter structure, comprising a cylindrical body, an upper flange at the top of the cylindrical body, a heating sleeve on the outer circumferential side of the cylindrical body, the heating sleeve being concentrically arranged with the cylindrical body, the upper flange extending radially outward to form a connecting annular surface, the inner ring at the bottom of the connecting annular surface being connected to the top of the heating sleeve, a first liquid inlet and a second liquid inlet sequentially arranged from top to bottom on the side of the cylindrical body, and a liquid outlet at the bottom of the cylindrical body, the first liquid inlet extending axially outward to form a first liquid inlet pipe, the second liquid inlet extending axially outward to form a second liquid inlet pipe, and the liquid outlet extending downward to form a liquid outlet pipe, with connecting flanges provided on the first liquid inlet pipe, the second liquid inlet pipe, and the liquid outlet pipe; further comprising...

[0006] A pipe heating channel is provided inside the side wall of the first inlet pipe, the second inlet pipe, and the outlet pipe. The pipe heating channel is concentrically arranged with the first inlet pipe, the second inlet pipe, and the outlet pipe, respectively. One end of the pipe heating channel extends to the connecting flange, and the other end of the pipe heating channel penetrates into the heating jacket.

[0007] A heating inlet is provided on the first liquid inlet pipe. The heating inlet is connected to the heating channel at the opening of the first liquid inlet pipe. A heating mixing chamber is formed at the bottom of the first liquid inlet pipe between the heating inlet and the heating channel at the opening. One side of the heating mixing chamber extends into the heating jacket.

[0008] A heating outlet is provided on the side of the liquid outlet pipe and is connected to a pipe heating channel inside the side wall of the liquid outlet pipe.

[0009] The insulation sleeve is located outside the heating sleeve. The insulation sleeve is provided with magnetic connection structure between the insulation sleeve and the upper flange and the connecting flange. The insulation sleeve is provided with arc-shaped locking structure at the positions of the first liquid inlet pipe, the second liquid inlet pipe and the liquid outlet pipe. The insulation sleeve is provided with heating pipe installation area between the first liquid inlet pipe and the second liquid inlet pipe on the outer circumferential wall of the cylinder.

[0010] An auxiliary insulation pipe is provided with an insulation layer on its outer side. Connecting structures are provided on both sides of the insulation layer in the heating pipe installation area. A single temperature measuring liquid inlet structure connected to the heating mixing chamber is provided at the top of the auxiliary insulation pipe. The single temperature measuring liquid inlet structure detects the temperature inside the heating mixing chamber. A double temperature measuring liquid outlet structure connected to the second liquid inlet pipe is provided at the bottom of the auxiliary insulation pipe. The double temperature measuring liquid outlet structure detects the temperature of the heating channel at the pipe opening of the second liquid inlet pipe and the temperature of the second liquid inlet pipe, respectively.

[0011] The dual-temperature liquid outlet structure includes a base, a first probe sensor, a second probe sensor, a first detection mounting hole, a second detection mounting hole, a detection cavity, and a water channel. The second liquid inlet pipe is provided with a first threaded hole that is threaded to the base. The first threaded hole passes through the pipe heating channel. The detection cavity passes through the middle of the base and communicates with the pipe heating channel. The first detection mounting hole passes through the detection cavity. The second detection mounting hole passes through the base. The first probe sensor is disposed in the first detection mounting hole. The second probe sensor is disposed in the second detection mounting hole. The water channel passes through the middle of the base and communicates with the pipe heating channel.

[0012] Preferably, the heating mixing chamber includes a housing with a side projection shape that is an inverted trapezoid. The top of the housing is connected to the bottom of the first liquid inlet pipe, one side of the housing extends along its length to the connecting flange of the first liquid inlet pipe, and the other side of the housing extends to the heating jacket.

[0013] By adopting the above technical solution, the inverted trapezoidal object can slow down the flow rate of the heating fluid, prolong the contact time with the pipe wall, improve the heat exchange efficiency, and ensure the temperature inside the first inlet pipe.

[0014] Preferably, the axis of the heating inlet is in the same vertical plane as the axis of the first liquid inlet pipe, the axis of the heating inlet is inclined downward, the heating inlet is disposed on the housing, and the bottom of the housing is provided with a connecting plane for connecting the single temperature measuring liquid inlet structure.

[0015] By adopting the above technical solution, the inclined setting of the heating inlet firstly ensures that the flow rate of the heating fluid is inclined upward, and the flow direction of the fluid in the first liquid inlet pipe is staggered in the height direction, thereby improving the efficiency of heat exchange. Secondly, it avoids interference between the flange of the first liquid inlet pipe and the heating inlet. Thirdly, the shell is set with a connecting plane, which facilitates the subsequent setting of auxiliary insulation pipes and temperature detection structures.

[0016] Preferably, the first and second detection mounting holes are located on one side of the top of the base, the water channel is located on the other side of the top of the base, the water channel is L-shaped, the cross-sectional shape of the detection cavity is fan-shaped, the base is provided with a quick interface at the top of the water channel, the circumferential side of the base is provided with a stepped surface, and a sealing ring is provided between the base and the second liquid inlet pipe.

[0017] By adopting the above technical solution, the cavity is connected to the heating channel at the pipe opening, and the heating temperature at the second liquid inlet pipe position is detected. At the same time, the base injects heating medium into the heating channel at the pipe opening through the L-shaped water channel, and the sealing ring improves the sealing performance at this position.

[0018] Preferably, the auxiliary insulation pipe includes an inner pipe and an outer pipe. The two ends of the inner pipe in the height direction are respectively connected to a single temperature measuring liquid outlet structure and a double temperature measuring liquid outlet structure. The outer pipe is arranged concentrically with the inner pipe and is located outside the inner pipe.

[0019] By adopting the above technical solutions, the heat preservation performance of the heating medium can be improved.

[0020] Preferably, a flow pump is installed inside the auxiliary insulation pipe, and the quick connector is connected to the auxiliary insulation pipe via a flexible hose.

[0021] By adopting the above technical solution, the flow pump accelerates or reduces the flow rate of the heating medium, thereby controlling the temperature at the second inlet pipe position.

[0022] Preferably, a plastic hinged shell is provided outside the insulation layer. The plastic hinged shell includes sub-shells that extend along the height direction. Adjacent sub-shells are hinged together and can rotate in the horizontal direction. A plastic protective shell is provided outside the insulation layer. The connection structure includes a snap-fit ​​groove, a hook and loop fastener surface, and a rough hook and loop fastener surface. The snap-fit ​​groove is provided on both sides of the plastic protective shell in the width direction. The two sides of the insulation layer in the width direction are embedded in the snap-fit ​​groove. The hook and loop fastener surfaces are provided on both sides of the inner side of the plastic protective shell in the width direction. The rough hook and loop fastener surfaces are provided on the outer surface of the plastic hinged shell on both sides of the heating tube installation area.

[0023] By adopting the above technical solutions, firstly, the plastic hinged shell improves the strength of the outer side of the cylinder; secondly, the plastic hinged shell can rotate in the circumferential direction, thereby covering the filter cylinder; thirdly, the Velcro hook and loop surfaces work together to quickly connect the plastic protective shell and the plastic hinged shell; and fourthly, it provides a certain strength in the circumferential direction, which helps prevent leakage from the filter surface or heating jacket during testing.

[0024] Preferably, the arc-shaped locking structure includes an arc-shaped plate, a connecting groove, a connector, a second threaded hole, and an oblong hole. The connecting groove is disposed on one side of the arc-shaped plate, and the other side of the arc-shaped plate is connected to one side of the insulation sleeve. The other side of the insulation sleeve is located within the connecting groove. The oblong hole is disposed on the other side of the insulation sleeve and mates with the connector. The connector extends through one side of the connecting groove. The second threaded hole is disposed on the arc-shaped plate and threadedly connected to the connector.

[0025] By adopting the above technical solution, the arc-shaped locking structure serves to cover and connect the liquid inlet.

[0026] Preferably, the magnetic connection structure includes a connecting edge, a connecting seat, a magnetic attracting element, a connecting bolt, and a sleeve. The connecting edge is covered with an insulation layer, the sleeve extends through the thickness direction of the insulation layer, the magnetic attracting element is located at one end of the connecting seat, and the connecting bolt passes through one side of the connecting edge and the sleeve in sequence before being threadedly connected to the connecting seat.

[0027] By adopting the above technical solution, and cooperating with the non-connecting surface of the flange, it can achieve the function of quick connection and positioning of the insulation sleeve.

[0028] In summary, the reactor is used to mix multiple alcohols and esters reacting at the same temperature. It ensures consistent relative temperatures between multiple inlet pipes when multiple liquids enter, reducing temperature differences between them and ensuring near-uniform temperatures entering the filter. Through the combined action of an internal heating jacket and an external insulation jacket (insulation layer), it minimizes temperature drop in the auxiliary insulation pipe. When actual temperature differences occur, the single-temperature-sensing inlet structure can detect the inlet temperature of the heating medium (i.e., the temperature of the heating mixing chamber), while the dual-temperature-sensing inlet structure can detect not only the inlet temperature at the second inlet position but also the inlet temperature within the heating channel at the pipe inlet. In the laboratory preparation process, a comprehensive temperature control system is formed through filters and pipelines to reduce temperature differences at multiple inlet locations. Simultaneously, the flow rate is increased by controlling the flow pump, or the temperature is increased by the transducer in front of the second inlet pipe, forming a closed-loop temperature control and creating effective negative feedback regulation. In terms of maintenance, it has the following advantages: the overall external insulation material is connected to the flange via a magnetic structure; the insulation sleeve and insulation layer are quickly connected via Velcro, facilitating the rapid installation and removal of the auxiliary heating tube; the inlet pipe is stably connected via an arc-shaped locking structure; and the heating medium also circulates through the base, making it convenient for experimental adjustments and replacements. Attached Figure Description

[0029] Figure 1 This is a cross-sectional schematic diagram of an embodiment;

[0030] Figure 2 yes Figure 1 The enlarged schematic diagram of section A shown is used to illustrate the single-temperature-sensing liquid outlet structure.

[0031] Figure 3 yes Figure 1 The enlarged schematic diagram of section B shown illustrates the dual-temperature liquid outlet structure;

[0032] Figure 4 This is a schematic diagram of the dual-temperature-measuring liquid outlet structure in the embodiment. Figure 1 ;

[0033] Figure 5 This is a schematic diagram of the dual-temperature-measuring liquid outlet structure in the embodiment. Figure 2 ;

[0034] Figure 6 This is a cross-sectional schematic diagram of the insulation layer location in the embodiment;

[0035] Figure 7 This is a cross-sectional schematic diagram of the insulation jacket in the first liquid inlet pipe in the embodiment.

[0036] Figure 8 yes Figure 1 The enlarged schematic diagram of section C shown illustrates the magnetic connection structure.

[0037] In the diagram, 1. Cylinder; 11. Upper flange; 12. Heating jacket; 13. Connecting annular surface; 14. First inlet pipe; 15. Second inlet pipe; 16. Outlet pipe; 17. Connecting flange; 2. Heating channel at the pipe opening; 3. Heating inlet; 31. Heating mixing chamber; 32. Shell; 33. Connecting plane; 4. Heating outlet; 5. Insulation jacket; 51. Plastic hinged shell; 52. Arc-shaped locking structure; 53. Arc-shaped plate; 54. Connecting groove; 55. Connector; 56. Second threaded hole; 57. Oblong hole; 6. Heating pipe installation area; 61. Auxiliary insulation pipe; 62. Inner pipe; 63. Outer pipe; 64. Flow pump; 65. Insulation layer; 66. Single temperature measuring liquid inlet structure; 7. Dual temperature measuring liquid outlet structure; 71. First threaded hole; 72. Base; 73. Stepped surface; 74. First probe sensor; 75. Second probe sensor; 76. First detection mounting hole; 77. Second detection mounting hole; 78. Detection cavity; 79. Water channel; 791. Quick interface; 8. Magnetic connection structure; 81. Connecting edge; 82. Connecting seat; 83. Magnetic component; 84. Connecting bolt; 85. Sleeve; 9. Plastic protective shell; 91. Clip-on slot; 92. Hook and loop fastener surface; 93. Hook and loop fastener rough surface. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings.

[0039] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0040] Example:

[0041] like Figures 1 to 8As shown, a dual-inlet thermostatic filter structure includes a cylindrical body 1. An upper flange 11 is provided at the top of the cylindrical body 1, connecting to an upper cover. Considering the height of the test space, this embodiment uses a side-entry method for the reaction filtration liquid and heating medium. A heating sleeve 12 is provided on the outer circumferential side of the cylindrical body 1. The heating sleeve 12 is a cavity, and the heating medium is in fluid form. The heating sleeve 12 is concentrically arranged with the cylindrical body 1. The upper flange 11 extends radially outward to form a connecting annular surface 13, which is used for magnetic fixation and heat preservation. The inner ring of the connecting annular surface 13 is connected to the top of the heating sleeve 12. The side of the cylinder 1 is provided with a first liquid inlet and a second liquid inlet from top to bottom. The bottom of the cylinder 1 is provided with a liquid outlet. The first liquid inlet extends outward along the axial direction to form a first liquid inlet pipe 14. The second liquid inlet extends outward along the axial direction to form a second liquid inlet pipe 15. The liquid outlet is located at the bottom of the cylinder 1 and extends downward to form a liquid outlet pipe 16. The first liquid inlet pipe 14, the second liquid inlet pipe 15 and the liquid outlet pipe 16 are provided with connecting flanges 17, which are used to connect to the outside.

[0042] A pipe heating channel 2 is provided in the inner wall of the first inlet pipe 14, the second inlet pipe 15, and the outlet pipe 16. The pipe heating channel 2 is located in the side wall of the first inlet pipe 14, the second inlet pipe 15, and the outlet pipe 16, and plays a role in heating the pipe body. The pipe heating channel 2 is concentrically arranged with the first inlet pipe 14, the second inlet pipe 15, and the outlet pipe 16, respectively. One end of the pipe heating channel 2 extends to the connecting flange 17, and the other end of the pipe heating channel 2 penetrates into the heating jacket 12, so that the heat medium in the heating jacket 12 flows into the heating jacket 12.

[0043] like Figure 1 As shown, the heating inlet 3 of the filter is located at the bottom of the first inlet pipe 14. The heating inlet 3 is connected to the heating channel 2 at the inlet of the first inlet pipe 14. A heating mixing chamber 31 is formed between the heating inlet 3 and the heating channel 2 at the bottom of the first inlet pipe 14. One side of the heating mixing chamber 31 extends into the heating jacket 12, thereby allowing the heat medium to flow into the heating jacket 12. The specific structure is as follows: a shell 32 is provided outside the heating mixing chamber 31. The side projection shape of the shell 32 is an inverted trapezoid, thereby ensuring the contact area between it and the first inlet pipe 14. The top of the shell 32 is connected to the bottom of the first inlet pipe 14, but is not connected to the interior of the first inlet pipe 14. One side of the shell 32 extends to the connecting flange 17 of the first inlet pipe 14 in the length direction to increase the heat exchange area. The other side of the shell 32 extends into the heating jacket 12.

[0044] like Figure 1As shown, the heating inlet 3 is located above the first liquid inlet pipe 14, i.e. the filter, and the heating outlet 4 should be located below the filter to ensure that the cylinder 1 is fully heated when the heat medium flows. The heating outlet 4 is located on the side of the liquid outlet pipe 16 located below, and the heating outlet 4 is connected to the pipe heating channel 2 in the side wall of the liquid outlet pipe 16.

[0045] like Figure 1 As shown, the axis of the heating inlet 3 is in the same vertical plane as the axis of the first liquid inlet pipe 14. The axis of the heating inlet 3 is inclined downward. The heating inlet 3 is installed on the housing 32. The bottom of the housing 32 is provided with a connecting plane 33 for the single temperature measuring liquid inlet structure 66 to be connected.

[0046] like Figure 1 As shown, the insulation jacket 5 is a metal outer layer and forms a cavity between it and the cylinder 1 through which the heating medium passes. The insulation jacket 5 is located outside the heating jacket 12. The insulation jacket 5 is provided with an arc-shaped locking structure 52 at the positions of the first liquid inlet pipe 14, the second liquid inlet pipe 15 and the liquid outlet pipe 16 to ensure that the insulation jacket 5 covers the outer surface of the first liquid inlet pipe 14, the second liquid inlet pipe 15 and the liquid outlet pipe 16. The insulation jacket 5 is provided with a heating pipe installation area 6 between the first liquid inlet pipe 14 and the second liquid inlet pipe 15 on the outer circumferential wall of the cylinder 1 for connecting the external auxiliary insulation pipe 61 at this position.

[0047] like Figure 1 and Figure 6 As shown, an auxiliary insulation pipe 61 is provided inside the insulation layer 65. The insulation layer 65 serves to cover the auxiliary insulation pipe 61. Connection structures are provided on both sides of the insulation layer 65 in the heating pipe installation area 6. A single temperature measuring liquid inlet structure 66 connected to the heating mixing chamber 31 is provided at the top of the auxiliary insulation pipe 61. The single temperature measuring liquid inlet structure 66 detects the temperature inside the heating mixing chamber 31. A double temperature measuring liquid outlet structure 7 connected to the second liquid inlet pipe 15 is provided at the bottom of the auxiliary insulation pipe 61. The double temperature measuring liquid outlet structure 7 detects the temperature of the heating channel 2 at the pipe opening inside the second liquid inlet pipe 15 and the temperature of the second liquid inlet pipe 15, respectively.

[0048] like Figures 3 to 5As shown, the dual-temperature measuring liquid outlet structure 7 provides dual temperature and flow measurement and includes a base 72, a first probe sensor 74, a second probe sensor 75, a first detection mounting hole 76, a second detection mounting hole 77, a detection cavity 78, and a water channel 79. The second inlet pipe 15 has a first threaded hole 71 that threads with the base 72. The first threaded hole 71 penetrates the pipe heating channel 2, and a relative seal is achieved through the threaded connection between the first threaded hole 71 and the second inlet pipe 15. The detection cavity 78 extends to the middle of the base 72 and communicates with the pipe heating channel 2. The first detection mounting hole 76 extends into the detection cavity 78, and the second detection mounting hole 77 extends through the base 72. The first probe sensor... The device 74 is installed in the first detection mounting hole 76, the second probe sensor 75 is installed in the second detection mounting hole 77, and the water channel 79 extends through the middle of the base 72 and communicates with the heating channel 2 at the pipe opening. The overall positional structure is as follows: the first detection mounting hole 76 and the second detection mounting hole 77 are located on one side of the top of the base 72, and the water channel 79 is located on the other side of the top of the base 72. The water channel 79 is L-shaped, the detection cavity 78 has a fan-shaped cross-section, the base 72 has a quick interface 791 at the top of the water channel 79, and the circumferential side of the base 72 has a stepped surface 73 to restrict the further downward rotation of the base 72. A sealing ring is provided between the base 72 and the second liquid inlet pipe 15.

[0049] like Figure 2 As shown, the single-temperature-sensing liquid outlet structure is roughly the same as the dual-temperature-sensing liquid outlet structure 7, except that it is equipped with a single-probe sensor structure. The second detection mounting hole 77, detection cavity 78, and second probe sensor 75 structures are omitted, which serves to detect temperature and guide the heat medium into the auxiliary insulation pipe 61. The specific structure of the auxiliary insulation pipe 61 is as follows: the auxiliary insulation pipe 61 includes an inner pipe 62 and an outer pipe 63. The two ends of the inner pipe 62 in the height direction are respectively connected to the single-temperature-sensing liquid outlet structure and the dual-temperature-sensing liquid outlet structure 7. The outer pipe 63 is concentrically arranged with the inner pipe 62 and is located outside the inner pipe 62. At the same time, at the bottom of the auxiliary insulation pipe 61, a flow pump 64 is installed inside the auxiliary insulation pipe 61, and the quick interface 791 is connected to the auxiliary insulation pipe 61 through a hose.

[0050] like Figure 6As shown, a plastic hinge shell 51 is provided outside the insulation layer 5. The plastic hinge shell 51 includes a sub-shell, which extends along the height direction of the cylinder 1. Adjacent sub-shells are hinged together by a connecting shaft and can rotate in the horizontal direction, allowing the insulation layer 5 to be removed as a whole. A plastic protective shell 9 is provided outside the insulation layer 65. The connection structure includes a snap-fit ​​groove 91, a hook and loop fastener 92, and a rough hook and loop fastener 93. The snap-fit ​​groove 91 is provided on both sides of the width direction of the plastic protective shell 9. The two sides of the insulation layer 65 in the width direction are embedded in the snap-fit ​​groove 91. The hook and loop fastener 92 is provided on both sides of the inner side of the plastic protective shell 9 in the width direction. The rough hook and loop fastener 93 is provided on the outer surface of the plastic hinge shell 51 on both sides of the heating tube installation area 6. Through the cooperation of the hook and loop fasteners, the insulation layer 65 is connected as a whole between the insulation layers 5.

[0051] like Figure 7 As shown, in order to cover the insulation layer 5 between the side walls of the liquid inlet pipe, the arc-shaped locking structure 52 includes an arc-shaped plate 53, a connecting groove 54, a connector 55, a second threaded hole 56, and an elongated hole 57. The connecting groove 54 is located on one side of the arc-shaped plate 53, and the other side of the arc-shaped plate 53 is connected to one side of the insulation layer 5. The other side of the insulation layer 5 is located in the connecting groove 54. The elongated hole 57 is located on the other side of the insulation layer 5 and cooperates with the connector 55. The connector 55 is provided through one side of the connecting groove 54. The second threaded hole 56 is provided on the arc-shaped plate 53 and is threadedly connected to the connector 55. Thus, the locking between the insulation layers 5 can be achieved through the cooperation of the elongated hole 57 and the connector 55.

[0052] like Figure 1 and Figure 8 As shown, magnetic connection structures 8 are provided between the insulation sleeve 5 and both the upper flange 11 and the connecting flange 17. The magnetic connection structure 8 includes a connecting edge 81, a connecting seat 82, a magnetic element 83, a connecting bolt 84, and a sleeve 85. The connecting edge 81 covers the insulation sleeve 5, the sleeve 85 extends through the thickness of the insulation sleeve 5, the magnetic element 83 is located at one end of the connecting seat 82, and the connecting bolt 84 passes through one side of the connecting edge 81 and the sleeve 85 before being threaded onto the connecting seat 82. The insulation sleeve 5 is magnetically attracted to the flange.

[0053] In this embodiment, the probe sensor uses a screw thermocouple sensor with a PT100 high-temperature three-core shielded wire and a temperature measurement range of -50 to +200 degrees Celsius; the connector 82 uses a magnetic pot.

[0054] Working principle:

[0055] Temperature detection and feedback include the following steps:

[0056] Step 1: Set the temperature and flow rate of pump 6 at each location;

[0057] Step 2: The dual-temperature liquid outlet structure 7 detected a decrease in temperature inside the second liquid inlet;

[0058] Step 3: The first probe sensor 74 detects the temperature of the heat medium in the heating channel 2 through the first detection mounting hole 76, while the second probe sensor 75 detects the liquid temperature in the second inlet pipe 15 through the second detection mounting hole 77. The temperature drop signal is recorded by the system as the trigger point for negative feedback.

[0059] Step 4: Start the flow pump 64 in the auxiliary insulation pipe 61 to increase the flow rate of the heat medium into the side wall of the second inlet pipe 15, respond to the temperature reduction signal, and reduce the temperature difference with the set temperature.

[0060] Step 5: Continue until the second probe sensor 75 of the dual-temperature liquid outlet structure 7 detects that the temperature at the second liquid inlet has risen back to the set range. If the temperature is still lower than the set value, return to step 4 and start counting.

[0061] Step 6: If the count exceeds the set value, the temperature and flow rate of the heat medium in the heating mixing chamber 31 are increased through an external transducer.

Claims

1. A dual-inlet constant-temperature filter structure, comprising a cylindrical body, wherein an upper flange is provided at the top of the cylindrical body, and a heating jacket is provided on the outer circumferential side of the cylindrical body, characterized in that: The heating jacket is concentrically arranged with the cylinder body. The upper flange extends radially outward to form a connecting annular surface. The inner ring at the bottom of the connecting annular surface is connected to the top of the heating jacket. The side of the cylinder body has a first liquid inlet and a second liquid inlet sequentially arranged from top to bottom. The bottom of the cylinder body has a liquid outlet. The first liquid inlet extends axially outward to form a first liquid inlet pipe, the second liquid inlet extends axially outward to form a second liquid inlet pipe, and the liquid outlet extends downward to form a liquid outlet pipe. Connecting flanges are provided on the first liquid inlet pipe, the second liquid inlet pipe, and the liquid outlet pipe. include, A pipe heating channel is provided inside the side wall of the first inlet pipe, the second inlet pipe, and the outlet pipe. The pipe heating channel is concentrically arranged with the first inlet pipe, the second inlet pipe, and the outlet pipe, respectively. One end of the pipe heating channel extends to the connecting flange, and the other end of the pipe heating channel penetrates into the heating jacket. A heating inlet is provided on the first liquid inlet pipe. The heating inlet is connected to the heating channel at the opening of the first liquid inlet pipe. A heating mixing chamber is formed at the bottom of the first liquid inlet pipe between the heating inlet and the heating channel at the opening. One side of the heating mixing chamber extends into the heating jacket. A heating outlet is provided on the side of the liquid outlet pipe and is connected to a pipe heating channel inside the side wall of the liquid outlet pipe. The insulation sleeve is located outside the heating sleeve. The insulation sleeve is provided with magnetic connection structure between the insulation sleeve and the upper flange and the connecting flange. The insulation sleeve is provided with arc-shaped locking structure at the positions of the first liquid inlet pipe, the second liquid inlet pipe and the liquid outlet pipe. The insulation sleeve is provided with heating pipe installation area between the first liquid inlet pipe and the second liquid inlet pipe on the outer circumferential wall of the cylinder. An auxiliary insulation pipe is provided with an insulation layer on its outer side. Connecting structures are provided on both sides of the insulation layer in the heating pipe installation area. A single temperature measuring liquid inlet structure connected to the heating mixing chamber is provided at the top of the auxiliary insulation pipe. The single temperature measuring liquid inlet structure detects the temperature inside the heating mixing chamber. A double temperature measuring liquid outlet structure connected to the second liquid inlet pipe is provided at the bottom of the auxiliary insulation pipe. The double temperature measuring liquid outlet structure detects the temperature of the heating channel at the pipe opening of the second liquid inlet pipe and the temperature of the second liquid inlet pipe, respectively. The dual-temperature liquid outlet structure includes a base, a first probe sensor, a second probe sensor, a first detection mounting hole, a second detection mounting hole, a detection cavity, and a water channel. The second liquid inlet pipe is provided with a first threaded hole that is threaded to the base. The first threaded hole passes through the pipe heating channel. The detection cavity passes through the middle of the base and communicates with the pipe heating channel. The first detection mounting hole passes through the detection cavity. The second detection mounting hole passes through the base. The first probe sensor is disposed in the first detection mounting hole. The second probe sensor is disposed in the second detection mounting hole. The water channel passes through the middle of the base and communicates with the pipe heating channel.

2. The dual-inlet constant-temperature filter structure according to claim 1, characterized in that: The heating mixing chamber includes a housing with a side projection shape that is an inverted trapezoid. The top of the housing is connected to the bottom of the first liquid inlet pipe. One side of the housing extends along its length to the connecting flange of the first liquid inlet pipe, and the other side of the housing extends to the heating jacket.

3. The dual-inlet constant-temperature filter structure according to claim 2, characterized in that: The axis of the heating inlet is in the same vertical plane as the axis of the first liquid inlet pipe. The axis of the heating inlet is inclined downward. The heating inlet is installed on the housing. The bottom of the housing is provided with a connecting plane for connecting the single temperature measuring liquid inlet structure.

4. The dual-inlet constant-temperature filter structure according to claim 3, characterized in that: The first and second detection mounting holes are located on one side of the top of the base, and the water channel is located on the other side of the top of the base. The water channel is L-shaped, and the cross-sectional shape of the detection cavity is fan-shaped. The base has a quick interface at the top of the water channel, and the circumferential side of the base has a stepped surface. A sealing ring is provided between the base and the second liquid inlet pipe.

5. The dual-inlet constant-temperature filter structure according to claim 4, characterized in that: The auxiliary insulation pipe includes an inner pipe and an outer pipe. The two ends of the inner pipe in the height direction are respectively connected to a single temperature measuring liquid outlet structure and a double temperature measuring liquid outlet structure. The outer pipe is concentrically arranged with the inner pipe and is located outside the inner pipe.

6. The dual-inlet constant-temperature filter structure according to claim 5, characterized in that: A flow pump is installed inside the auxiliary insulation pipe, and the quick connector is connected to the auxiliary insulation pipe via a flexible hose.

7. The dual-inlet constant-temperature filter structure according to claim 6, characterized in that: The insulation layer is provided with a plastic hinged shell, which includes a sub-shell extending along the height direction. Adjacent sub-shells are hinged together and can rotate in the horizontal direction. The insulation layer is provided with a plastic protective shell. The connection structure includes a snap-fit ​​groove, a hook and loop fastener surface, and a rough hook and loop fastener surface. The snap-fit ​​groove is provided on both sides of the plastic protective shell in the width direction. The two sides of the insulation layer in the width direction are embedded in the snap-fit ​​groove. The hook and loop fastener surfaces are provided on both sides of the inner side of the plastic protective shell in the width direction. The rough hook and loop fastener surfaces are provided on the outer surface of the plastic hinged shell on both sides of the heating tube installation area.

8. The dual-inlet constant-temperature filter structure according to claim 1, characterized in that: The arc-shaped locking structure includes an arc-shaped plate, a connecting groove, a connector, a second threaded hole, and an oblong hole. The connecting groove is located on one side of the arc-shaped plate, and the other side of the arc-shaped plate is connected to one side of the insulation layer. The other side of the insulation layer is located inside the connecting groove. The oblong hole is located on the other side of the insulation layer and cooperates with the connector. The connector is provided through one side of the connecting groove. The second threaded hole is located on the arc-shaped plate and is threadedly connected to the connector.

9. The dual-inlet constant-temperature filter structure according to claim 1, characterized in that: The magnetic connection structure includes a connecting edge, a connecting seat, a magnetic attractor, a connecting bolt, and a sleeve. The connecting edge is covered with an insulation layer, and the sleeve extends through the thickness of the insulation layer. The magnetic attractor is located at one end of the connecting seat, and the connecting bolt passes through one side of the connecting edge and the sleeve in sequence before being threadedly connected to the connecting seat.

Images