Heating system for potassium hydrogen persulfate drying machine

Abstract

The invention relates to the technical field of heating equipment for a potassium hydrogen persulfate drying machine, in particular to a heating system for a potassium hydrogen persulfate drying machine, which comprises a condenser, a compressor, a flow control valve, an evaporator, a liquid storage tank, an expansion valve, a three-way joint I and a three-way joint II, the liquid outlet end of the condenser is communicated with the liquid inlet end of the liquid storage tank, the liquid outlet end of the liquid storage tank is communicated with the liquid inlet end of the expansion valve, the liquid outlet end of the expansion valve is communicated with the liquid inlet end of the second three-way connector, and the liquid inlet end of the evaporator is communicated with one liquid outlet end of the second three-way connector. The liquid inlet end of the flow control valve is communicated with the other liquid outlet end of the second three-way connector. By designing two sets of heat exchange agent flowing paths, lubricating oil in the compressor is cooled synchronously in the heating and drying process, and the service life of the compressor is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of heating equipment for potassium persulfate dryers, and in particular to a heating system for potassium persulfate dryers. Background Art

[0002] Potassium persulfate is a strong oxidant, mainly used in disinfection and water treatment. Its production process requires crystallization, filtration, washing and drying.

[0003] Currently, the drying process is one of the most energy-intensive steps in the production of potassium persulfate. Using air-energy drying technology can significantly reduce energy consumption while improving drying efficiency. In air-energy heating systems, the compressor is a key component, typically equipped with an internal lubrication mechanism that pumps lubricating oil from the compressor to cool the compressor's drive components.

[0004] Although this cooling method can be used, due to the relatively harsh working environment of the compressor, after long-term operation, the temperature increase of the lubricating oil causes the viscosity to decrease, the lubrication performance to deteriorate, and the internal structure of the compressor is prone to wear, thereby reducing the service life of the compressor. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to propose a heating system for a potassium persulfate dryer to solve the problem that after the compressor has been working for a long time, the temperature increase of the lubricating oil leads to a decrease in viscosity, deterioration of lubrication performance, and easy wear of the internal mechanism of the compressor, thereby reducing the service life of the compressor.

[0006] Based on the above objectives, the present invention provides a heating system for a potassium persulfate dryer, comprising a condenser, a compressor, a flow control valve, an evaporator, a liquid storage tank, an expansion valve, a tee joint 1 and a tee joint 2, the liquid inlet end of the condenser being connected to the compressed liquid outlet end of the compressor, the liquid outlet end of the condenser being connected to the liquid inlet end of the liquid storage tank, the liquid outlet end of the liquid storage tank being connected to the liquid inlet end of the expansion valve, the liquid outlet end of the expansion valve being connected to the liquid inlet end of the tee joint 2, the liquid inlet end of the evaporator being connected to one liquid outlet end of the tee joint 2, the liquid inlet end of the flow control valve being connected to the other liquid outlet end of the tee joint 2, the liquid outlet end of the evaporator being connected to one liquid inlet end of the tee joint 1, the compressed liquid inlet end of the compressor being connected to the liquid outlet end of the tee joint 1 by a pipeline connection, a temperature control component being fixed in the compressor, the liquid outlet end of the flow control valve being connected to one end of the temperature control component, and the other end of the temperature control component being connected to the other liquid inlet end of the tee joint 1.

[0007] In an optional example, the compressor includes a compression shell, the temperature control component includes a temperature control plate fixedly connected to the inner cavity of the compression shell, the temperature control component has a temperature control channel extending out of the compression shell, one end of the temperature control channel is connected to the liquid outlet end of the flow control valve, and the other end of the temperature control channel is connected to the other liquid inlet end of the three-way joint.

[0008] In an optional example, a filter duct extending toward the bottom of the inner cavity of the compression shell is provided on the temperature control board, a filter groove penetrating the filter duct is provided on the outer wall of the filter duct, and a filter mesh is fixed in the filter groove.

[0009] In an optional example, a catheter flow channel connected to the temperature control flow channel is opened in the filter catheter.

[0010] In an optional example, two groups of connecting ears are provided on the side of the temperature control plate, and connecting holes are provided on the connecting ears to pass through the connecting ears. The end of the temperature control flow channel extends into the corresponding connecting ear and is connected to the connecting hole. A flow guide connection component is inserted and fixed in the connecting hole, one end of the flow guide connection component is connected to the connecting hole, and the other end of the flow guide connection component extends out of the compression shell and is fixedly connected to the compression shell.

[0011] In an optional example, the temperature control plate includes a first substrate and a second substrate fixedly connected to each other, a guide groove is provided at one end of the first substrate facing the second substrate, two first ear flanges are provided on the side wall of the first substrate, and two second ears are provided on the side wall of the second substrate, the first ear flange and the second ear are combined to form a connecting ear, an extension groove is provided at one end of the first ear flange facing the second ear, the guide groove and the extension groove are combined to form a temperature control flow channel, a first ear hole is provided on the first ear that passes through the first ear, and a second ear hole is provided on the second ear that passes through the second ear, and the first ear hole and the second ear hole are combined to form a connecting hole.

[0012] In an optional example, a first through hole penetrating the first substrate is provided at the upper end of the first substrate, a second through hole penetrating the second substrate is provided at the upper end of the second substrate, the filter duct includes a first tube body and a second tube body, the first tube body is plugged and fixed in the first through hole, the second tube body is plugged and fixed in the second through hole, the outer wall of the first tube body conflicts with the inner wall of the second tube body, the inner wall of the second tube body is provided with a plurality of mutually staggered first guide grooves and second guide grooves, the first guide grooves and the second guide grooves are combined to form a duct flow channel, the outer wall of the first tube body is provided with a first filter groove penetrating the first tube body, the outer wall of the second tube body is provided with a second filter groove penetrating the second tube body, the first filter groove and the second filter groove are combined to form a filter through groove.

[0013] In an optional example, the inner wall of the first through hole is provided with a first inner wall flange, the top end of the first tube body is provided with a first outer wall flange, and the first outer wall flange is fixedly connected to the first inner wall flange; the inner wall of the second through hole is provided with a second inner wall flange, the top end of the second tube body is provided with a second outer wall flange, and the second outer wall flange is fixedly connected to the second inner wall flange, and there is a certain distance between the first outer wall flange and the second outer wall flange.

[0014] In an optional example, the flow guide connection assembly includes a connecting guide column and a flow guide tube, the flow guide tube is fixedly connected to the compression shell, a guide column flange is provided on the outer wall of the connecting guide column, the connecting guide column passes through the first ear hole and the second ear hole, and is fixedly connected to the first ear hole through the guide column flange, the connecting guide column is provided with a guide column flow channel toward the end away from the connecting support ear, one end of the flow guide tube is fixed on the outer wall of the connecting guide column, the inner cavity of the flow guide tube is connected to the guide column flow channel, the other end of the guide tube extends out of the compression shell, and a guide column through hole connected to the guide column flow channel is provided on the outer wall of the connecting guide column, and the guide column through hole is located in the extension groove.

[0015] In an optional example, a bent temperature control portion is provided at one end of the second substrate facing the compression shell.

[0016] The beneficial effects of the present invention are that the drying and heating of potassium persulfate are achieved by pressurizing and reducing the pressure of the heat exchanger, and at the same time, the drying temperature of the dryer is guaranteed by controlling the power of the compressor, thereby avoiding the decomposition of potassium persulfate due to excessively high heating temperature and reducing its effective content. In addition, by designing the flow paths of two sets of heat exchangers, the lubricating oil in the compressor is cooled synchronously during the heating and drying process, thereby avoiding losses caused by overheating of the compressor and increasing the service life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 Schematic diagram of the connection relationship of an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the installation of the temperature control assembly in an embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the three-dimensional structure of the temperature control component in an embodiment of the present invention;

[0021] Figure 4 Schematic diagram of the explosion structure of the temperature control component in the embodiment of the present invention Figure 1 ;

[0022] Figure 5 Schematic diagram of the explosion structure of the temperature control component in the embodiment of the present invention Figure 2 ;

[0023] Figure 6 Schematic diagram of the explosion structure of the first substrate in an embodiment of the present invention Figure 1 ;

[0024] Figure 7 Schematic diagram of the explosion structure of the first substrate in an embodiment of the present invention Figure 2 ;

[0025] Figure 8 Schematic diagram of the explosion structure of the second substrate in an embodiment of the present invention Figure 1 ;

[0026] Figure 9 Schematic diagram of the explosion structure of the second substrate in an embodiment of the present invention Figure 2 ;

[0027] Figure 10 This is a schematic diagram of the three-dimensional structure of the second tube body in an embodiment of the present invention;

[0028] Figure 11 Schematic diagram of the three-dimensional structure of the connecting guide pillars in an embodiment of the present invention.

[0029] The following are marked in the figure: 1. condenser; 2. compressor; 21. compression shell; 3. flow control valve; 4. evaporator; 5. liquid storage tank; 6. expansion valve; 7. three-way connector 1; 8. three-way connector 2; 9. temperature control assembly; 91. temperature control board; 911. connecting ear; 9111. connecting hole; 912. first base plate; 9121. guide groove; 9122. first ear; 91221. first ear hole; 9123. extension groove; 9124. first through hole; 9125. first inner wall flange; 913. second base plate; 9131. second ear; 91311. second ear hole; 9132. second Through hole; 91321, second inner wall flange; 9133, bent temperature control part; 92, temperature control flow channel; 93, filter duct; 931, first tube body; 9311, first filter tank; 9312, first outer wall flange; 932, second tube body; 9321, first guide groove; 9322, second guide groove; 9323, second filter tank; 9324, second outer wall flange; 94, filter through groove; 95, filter screen; 951, duct flow channel; 96, guide connection assembly; 961, connecting guide column; 9611, guide column flange; 9612, guide column flow channel; 9613, guide column through hole; 962, guide tube. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0031] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0032] In one embodiment, see Figure 1 As shown, the present invention provides a heating system for a potassium persulfate dryer, comprising a condenser 1, a compressor 2, a flow control valve 3, an evaporator 4, a liquid storage tank 5, an expansion valve 6, a tee joint 1 7 and a tee joint 2 8.

[0033] The liquid inlet of the condenser 1 is connected to the compressed liquid outlet of the compressor 2 by a pipeline connection, the liquid outlet of the condenser 1 is connected to the liquid inlet of the liquid storage tank 5 by a pipeline connection, the liquid outlet of the liquid storage tank 5 is connected to the liquid inlet of the expansion valve 6 by a pipeline connection, the liquid outlet of the expansion valve 6 is connected to the liquid inlet of the tee joint 8 by a pipeline connection, the liquid inlet of the evaporator 4 is connected to one liquid outlet of the tee joint 8 by a pipeline connection, and the liquid inlet of the flow control valve 3 is connected to the liquid outlet of the tee joint 8 by a pipeline connection. The liquid outlet of evaporator 4 is connected to the other liquid outlet of tee joint 2 8 via a pipeline. The liquid outlet of evaporator 4 is connected to one liquid inlet of tee joint 1 7 via a pipeline. The compressed liquid inlet of compressor 2 is connected to the liquid outlet of tee joint 1 7 via a pipeline. A temperature control assembly 9 is fixed inside compressor 2. The liquid outlet of flow control valve 3 is connected to one end of temperature control assembly 9 via a pipeline, and the other end of temperature control assembly 9 is connected to the other liquid inlet of tee joint 1 7 via a pipeline. Liquid storage tank 5 is filled with heat exchanger; flow control valve 3 can control the flow rate of the heat exchanger based on the heat of the lubricating oil in compressor 2.

[0034] Specifically, when the compressor 2 is working, the compressor 2 pressurizes the gaseous heat exchanger into a liquid state, and then flows into the condenser 1. The liquid heat exchanger releases heat at the condenser 1, heating the drying chamber of the potassium persulfate dryer. Then the liquid heat exchanger passes through the liquid storage tank 5 and the expansion valve 6 and is converted from liquid to gas. Most of the gaseous heat exchanger flows into the evaporator 4 through the three-way joint 8 to absorb heat from the air, and then flows into the compression liquid inlet end of the compressor 2 through the three-way joint 1 7 for re-compression and circulation. A small part of the gaseous heat exchanger flows into the temperature control component 9 through the three-way joint 2 8 and the flow control valve 3, absorbing heat and cooling the cooling oil in the compressor 2. The cooled gaseous heat exchanger flows into the compression liquid inlet end of the compressor 2 through the three-way joint 1 7 for re-compression and circulation.

[0035] In summary, this example achieves drying and heating of potassium persulfate by pressurizing and reducing the pressure of the heat exchanger. At the same time, by controlling the power of compressor 2, the drying temperature of the dryer is guaranteed, and the decomposition of potassium persulfate due to excessively high heating temperature is avoided, thereby reducing its effective content. In addition, by designing two sets of flow paths of heat exchangers, the lubricating oil in compressor 2 is cooled synchronously during the heating and drying process, thereby avoiding losses caused by overheating of compressor 2 and increasing the service life of compressor 2.

[0036] In an alternative example, see Figures 1 to 3 As shown, compressor 2 includes a compression housing 21. Temperature control assembly 9 includes a temperature control plate 91 fixedly connected to the interior of compression housing 21 via bolts. Temperature control assembly 9 includes a temperature control channel 92 extending from compression housing 21. One end of temperature control channel 92 is connected to the liquid outlet of flow control valve 3, while the other end is connected to the other liquid inlet of tee connector 7. Temperature control plate 91 is made of a heat-conducting metal material, such as alloy steel. A temperature sensor is installed within compression housing 21 to detect the temperature of the lubricating oil in compressor 2.

[0037] Specifically, in this example, by adding a temperature control plate 91 in the compression shell 21, the heat exchanger can absorb the temperature in the compressor 2, keep the compressor 2 working at a set temperature, and increase the service life of the compressor 2.

[0038] In an alternative example, see Figures 1 to 3 As shown, the temperature control plate 91 is provided with a filter conduit 93 extending toward the bottom of the inner cavity of the compression housing 21. A filter slot 94 is formed on the outer wall of the filter conduit 93 and penetrates the filter conduit 93. A filter screen 95 is fixed in the filter slot 94. The oil intake of the compressor 2 is provided in the filter conduit 93. The filter screen 95 can filter the lubricating fluid in the compressor 2 to prevent metal particles from being sucked into the oil intake.

[0039] Specifically, this example can filter the lubricating fluid in the compressor 2 through the cooperation of the filter duct 93 and the filter screen 95, thereby preventing metal particles from being sucked into the working piston of the compressor 2, and further improving the service life of the compressor 2.

[0040] In an alternative example, see Figures 1 to 4 As shown, a conduit flow channel 951 is provided in the filter conduit 93 and is connected to the temperature control flow channel 92. The conduit flow channel 951 and the temperature control flow channel 92 are connected in series.

[0041] Specifically, this example adds a conduit flow channel 951 in the filter conduit 93 so that the heat exchanger can absorb heat through the filter conduit 93, further increasing the contact area with the lubricating fluid of the compressor 2 and improving the cooling efficiency of the lubricating fluid of the compressor 2.

[0042] In an alternative example, see Figures 1 to 4 As shown, two groups of connecting ears 911 are provided on the side of the temperature control plate 91, and a connecting hole 9111 is opened on the connecting ear 911 and passes through the connecting ear 911. The end of the temperature control flow channel 92 extends into the corresponding connecting ear 911 and is connected with the connecting hole 9111. A flow guide connecting component 96 is inserted and fixed in the connecting hole 9111. One end of the flow guide connecting component 96 is connected to the connecting hole 9111, and the other end of the flow guide connecting component 96 extends out of the compression shell 21 and is fixedly connected to the compression shell 21.

[0043] Specifically, this example connects the temperature control plate 91 and the compression shell 21 by cooperating with the connecting lug 911 and the guide connection assembly 96, which facilitates the rapid installation of the temperature control plate 91 and improves the assembly and welding efficiency of the compressor 2.

[0044] In an alternative example, see Figures 1 to 7As shown, the temperature control plate 91 includes a first base plate 912 and a second base plate 913 fixedly connected to each other by welding. A guide groove 9121 is provided on the end of the first base plate 912 facing the second base plate 913. Two first ears 9122 are provided on the side wall of the first base plate 912, and two second ears 9131 are provided on the side wall of the second base plate 913. The first ear 9122 and the second ear 9131 are combined to form a connecting ear 911. An extension groove 9123 is defined on the end of the first ear 9122 facing the second ear 9131. The guide groove 9121 and the extension groove 9123 are combined to form the temperature control flow channel 92. A first ear hole 91221 is defined on the first ear 9122 and passes through the first ear 9122. A second ear hole 91311 is defined on the second ear 9131 and passes through the second ear 9131. The first ear hole 91221 and the second ear hole 91311 are combined to form a connecting hole 9111. The first substrate 912 and the first lug 9122 can be integrally formed by stamping; the second substrate 913 and the second lug 9131 can be formed by stamping.

[0045] Specifically, this example effectively reduces the manufacturing difficulty and production cost of the temperature control plate 91 by splitting the temperature control plate 91 into two plate structures, and the first substrate 912 and the second substrate 913 can be formed by stamping, further reducing the manufacturing cost of the temperature control plate 91.

[0046] In an alternative example, see Figures 1 to 10 As shown, the upper end of the first substrate 912 is provided with a first through hole 9124 that penetrates the first substrate 912, and the upper end of the second substrate 913 is provided with a second through hole 9132 that penetrates the second substrate 913. The filter duct 93 includes a first tube body 931 and a second tube body 932. The first tube body 931 is fixedly inserted into the first through hole 9124 by welding, and the second tube body 932 is fixedly inserted into the second through hole 9132 by welding. The outer wall of the first tube body 931 is in conflict with the inner wall of the second tube body 932 and is welded to the filter duct 931. The inner wall of the second tube body 932 is fixedly connected. A plurality of interlaced first and second flow guide grooves 9321, 9322 are formed on the inner wall of the second tube body 932. The first and second flow guide grooves 9321, 9322 together form a conduit flow channel 951. A first filter groove 9311 is formed on the outer wall of the first tube body 931, extending through the first tube body 931. A second filter groove 9323 is formed on the outer wall of the second tube body 932, extending through the second tube body 932. The first and second filter grooves 9311, 9323 together form a filter channel 94. The first tube body 931 and the second tube body 932 can be integrally formed by stamping, and the second tube body 932 can be integrally formed by stamping.

[0047] Specifically, this example effectively reduces the manufacturing difficulty and production cost of the filter duct 93 by splitting the filter duct 93 into two tube bodies, and the filter duct 93 is sealed by welding to ensure the sealing of the duct flow channel 951, further reducing the manufacturing cost of the filter duct 93.

[0048] In an alternative example, see Figures 1 to 10 As shown, the inner wall of the first through-hole 9124 is provided with a first inner wall flange 9125, and the top end of the first tube 931 is provided with a first outer wall flange 9312, which is fixedly connected to the first inner wall flange 9125. The inner wall of the second through-hole 9132 is provided with a second inner wall flange 91321, and the top end of the second tube 932 is provided with a second outer wall flange 9324, which is fixedly connected to the second inner wall flange 91321. A certain distance is provided between the lower end of the first outer wall flange 9312 and the upper end of the second outer wall flange 9324, which allows for the circulation of the heat exchanger. The lower end of the first outer wall flange 9312 abuts against the upper end of the first inner wall flange 9125 and is fixed by welding; the lower end of the second outer wall flange 9324 abuts against the upper end of the second inner wall flange 91321 and is fixed by welding.

[0049] Specifically, in this example, the first outer wall flange 9312 cooperates with the first inner wall flange 9125 to enable the first tube body 931 to be quickly plugged in and positioned, thereby facilitating the welding and fixation of the first tube body 931, and the second outer wall flange 9324 cooperates with the second inner wall flange 91321 to enable the second tube body 932 to be quickly plugged in and positioned, thereby facilitating the welding and fixation of the second tube body 932.

[0050] In an alternative example, see Figures 1 to 11As shown, the guide connection assembly 96 includes a connecting guide column 961 and a guide tube 962. The guide tube 962 is fixedly connected to the compression shell 21 by welding. A guide column flange 9611 is provided on the outer wall of the connecting guide column 961. The connecting guide column 961 passes through the first ear hole 91221 and the second ear hole 91311, and is fixedly connected to the first ear hole 91221 through the guide column flange 9611. The connecting guide column 961 is provided with a guide column flow channel 9612 at the end away from the connecting support ear 911. One end of the guide tube 962 is fixedly mounted on the outer wall of the connecting guide column 961. The inner cavity of the guide tube 962 is connected to the guide column flow channel 9612. The other end of the guide tube 962 extends out of the compression shell 21. A guide column through hole 9613 connected to the guide column flow channel 9612 is provided on the outer wall of the connecting guide column 961. The guide column through hole 9613 is located in the extension groove 9123. The guide post flange 9611 is fixedly connected to the first ear hole 91221 by welding; and one end of the guide tube 962 facing the guide post 961 is fixedly connected to the second support ear 9131 by welding.

[0051] Specifically, in this example, the guide column is first inserted into the corresponding first ear hole 91221 and the second ear hole 91311, and then the guide column is fixed by welding. Then, the temperature control plate 91 is placed in the compression shell 21 and fixed. Finally, the guide tube 962 is inserted into the compression shell 21, and finally the guide tube 962 is fixed by welding, thereby realizing the connection between the temperature control channel 92 and the outside world, and improving the assembly and welding efficiency of the temperature control channel 92.

[0052] In an alternative example, see Figures 1 to 11 As shown, a bent temperature control portion 9133 is provided at one end of the second substrate 913 facing the compression housing 21. The bent temperature control portion 9133 and the second substrate 913 are processed in an integrally formed manner.

[0053] Specifically, this example increases the contact area between the second substrate 913 and the lubricating oil of the compressor 2 by adding a bent temperature control portion 9133 to the second substrate 913, thereby improving the cooling efficiency of the lubricating oil and ensuring the service life of the compressor 2.

[0054] In general, the present invention achieves drying and heating of potassium persulfate by pressurizing and reducing the pressure of the heat exchanger, thereby ensuring the drying temperature of the dryer and avoiding the decomposition of potassium persulfate due to excessively high heating temperature, thereby reducing its effective content. In addition, by designing two sets of flow paths for the heat exchanger, the lubricating oil in the compressor 2 is simultaneously cooled during the heating and drying process, thereby avoiding losses caused by overheating of the compressor 2 and increasing the service life of the compressor 2. At the same time, by adding the filter duct 93 and the filter screen 95, the lubricating fluid in the compressor 2 can be filtered to avoid metal particles being sucked into the working piston of the compressor 2, thereby further increasing the service life of the compressor 2.

[0055] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0056] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heating system for a potassium persulfate dryer, characterized in that: The invention comprises a condenser (1), a compressor (2), a flow control valve (3), an evaporator (4), a liquid storage tank (5), an expansion valve (6), a three-way joint (7) and a two-way joint (8), wherein the liquid inlet end of the condenser (1) is connected to the compressed liquid outlet end of the compressor (2), the liquid outlet end of the condenser (1) is connected to the liquid inlet end of the liquid storage tank (5), the liquid outlet end of the liquid storage tank (5) is connected to the liquid inlet end of the expansion valve (6), the liquid outlet end of the expansion valve (6) is connected to the liquid inlet end of the two-way joint (8), the liquid inlet end of the evaporator (4) is connected to the two-way joint (8), and the liquid outlet end of the evaporator (4) is connected to the two-way joint (8). The liquid outlet of the flow control valve (3) is connected to one end of the liquid outlet of the three-way joint (8), the liquid inlet of the evaporator (4) is connected to one end of the liquid inlet of the three-way joint (7), the compression liquid inlet of the compressor (2) is connected to the liquid outlet of the three-way joint (7) by a pipeline connection, a temperature control component (9) is fixed in the compressor (2), the liquid outlet of the flow control valve (3) is connected to one end of the temperature control component (9), and the other end of the temperature control component (9) is connected to the other end of the liquid inlet of the three-way joint (7).

2. The heating system for potassium persulfate drying machine according to claim 1, wherein: The compressor (2) includes a compression shell (21), the temperature control component (9) includes a temperature control plate (91) fixedly connected to the inner cavity of the compression shell (21), and the temperature control component (9) has a temperature control channel (92) extending out of the compression shell (21), one end of the temperature control channel (92) is connected to the liquid outlet end of the flow control valve (3), and the other end of the temperature control channel (92) is connected to the other liquid inlet end of the three-way connector (7).

3. The heating system for potassium persulfate drying machine according to claim 2, wherein: The temperature control plate (91) is provided with a filter conduit (93) extending toward the bottom of the inner cavity of the compression shell (21); a filter groove (94) penetrating the filter conduit (93) is provided on the outer wall of the filter conduit (93); a filter screen (95) is fixed in the filter groove (94).

4. The heating system for potassium persulfate drying machine according to claim 3, characterized in that: A conduit flow channel (951) communicating with the temperature control flow channel (92) is provided in the filtering conduit (93).

5. The heating system for potassium persulfate drying machine according to claim 4, characterized in that: Two groups of connecting lugs (911) are provided on the side of the temperature control plate (91), and connecting holes (9111) are provided on the connecting lugs (911) and penetrate the connecting lugs (911). The end of the temperature control flow channel (92) extends into the corresponding connecting lug (911) and is connected to the connecting hole (9111). A flow guide connecting component (96) is inserted and fixed in the connecting hole (9111), one end of the flow guide connecting component (96) is connected to the connecting hole (9111), and the other end of the flow guide connecting component (96) extends out of the compression shell (21) and is fixedly connected to the compression shell (21).

6. The heating system for potassium persulfate drying machine according to claim 5, characterized in that: The temperature control plate (91) comprises a first base plate (912) and a second base plate (913) fixedly connected to each other, a guide groove (9121) is provided at one end of the first base plate (912) facing the second base plate (913), two first ears (9122) flanges are provided on the side wall of the first base plate (912), and two second ears (9131) are provided on the side wall of the second base plate (913), the first ears (9122) flanges and the second ears (9131) are combined to form a connecting ear (911), and the first ears (9122) ) An extension groove (9123) is provided at one end of the flange facing the second support ear (9131), and the guide groove (9121) and the extension groove (9123) are combined to form a temperature control flow channel (92); a first ear hole (91221) passing through the first support ear (9122) is provided on the first support ear (9122), and a second ear hole (91311) passing through the second support ear (9131) is provided on the second support ear (9131), and the first ear hole (91221) and the second ear hole (91311) are combined to form a connecting hole (9111).

7. The heating system for potassium persulfate drying machine according to claim 6, characterized in that: The upper end of the first substrate (912) is provided with a first through hole (9124) penetrating the first substrate (912), and the upper end of the second substrate (913) is provided with a second through hole (9132) penetrating the second substrate (913). The filtering conduit (93) comprises a first tube body (931) and a second tube body (932). The first tube body (931) is plugged and fixed in the first through hole (9124), and the second tube body (932) is plugged and fixed in the second through hole (9132). The outer wall of the first tube body (931) is in conflict with the inner wall of the second tube body (932). The inner wall of the body (932) is provided with a plurality of first guide grooves (9321) and second guide grooves (9322) that intersect with each other. The first guide grooves (9321) and the second guide grooves (9322) are combined to form a conduit flow channel (951). The outer wall of the first tube body (931) is provided with a first filter groove (9311) that passes through the first tube body (931). The outer wall of the second tube body (932) is provided with a second filter groove (9323) that passes through the second tube body (932). The first filter groove (9311) and the second filter groove (9323) are combined to form a filter groove (94).

8. The heating system for potassium persulfate drying machine according to claim 7, characterized in that: The inner wall of the first through hole (9124) is provided with a first inner wall flange (9125), the top end of the first tube body (931) is provided with a first outer wall flange (9312), and the first outer wall flange (9312) is fixedly connected to the first inner wall flange (9125); the inner wall of the second through hole (9132) is provided with a second inner wall flange (91321), the top end of the second tube body (932) is provided with a second outer wall flange (9324), and the second outer wall flange (9324) is fixedly connected to the second inner wall flange (91321), and there is a certain distance between the first outer wall flange (9312) and the second outer wall flange (9324).

9. The heating system for potassium persulfate drying machine according to claim 6, characterized in that: The flow guide connection assembly (96) includes a connecting guide post (961) and a flow guide tube (962), wherein the flow guide tube (962) is fixedly connected to the compression housing (21), and a guide post flange (9611) is provided on the outer wall of the connecting guide post (961). The connecting guide post (961) passes through the first ear hole (91221) and the second ear hole (91311), and is fixedly connected to the first ear hole (91221) through the guide post flange (9611). The connecting guide post (961) faces away from the connecting lug (91221). 11), a guide column flow channel (9612) is provided at one end of the guide tube (962), one end of the guide tube (962) is fixedly mounted on the outer wall of the connecting guide column (961), the inner cavity of the guide tube (962) is connected to the guide column flow channel (9612), the other end of the guide tube (962) extends out of the compression shell (21), and a guide column through hole (9613) connected to the guide column flow channel (9612) is provided on the outer wall of the connecting guide column (961), and the guide column through hole (9613) is located in the extension groove (9123).

10. The heating system for potassium persulfate dryer according to claim 6, characterized in that: A bent temperature control portion (9133) is provided at one end of the second substrate (913) facing the compression housing (21).

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