A heat exchange system for taking river water as a cold source

Abstract

The present invention relates to the field of cooling technology, and in particular to a heat exchange system for taking river water as a cold source, comprising: a water intake unit, used for collecting river water and conveying it to a primary filtering unit, the water intake unit comprising a connecting pipe, a movable pipe and a buoyancy member, the connecting pipe comprising a first connecting section, a heat exchange section and a second connecting section which are connected end to end in sequence, the movable pipe and the first connecting section are slidably connected, the buoyancy member is arranged on the movable pipe, and the heat exchange section is located at the bottom of the river water; a primary filtering unit, used for filtering the river water obtained by the water intake unit; and a heat exchange unit, used for cooling a workshop, through the design of the movable pipe and the connecting pipe that can float up and down, on the one hand, the heat exchange system can take the upper clear liquid of the river water and make the temperature of the upper clear liquid reach the use standard after passing through the bottom of the river water, and on the other hand, the movable pipe can follow the change of the water level of the river water to avoid being exposed.

Description

Technical Field

[0001] The invention relates to the field of cooling technology, in particular to a heat exchange system for taking river water as a cold source. Background Art

[0002] The river water source cooling water system mainly refers to the system that uses the natural water source in the river as the cooling medium. This system can be divided into many types according to the different designs and operation modes, such as direct current water supply system, secondary circulation water supply system (closed cooling system) and mixed water supply system. The temperature of river water gradually decreases from its surface to the bottom. When used as workshop cooling water, water below the liquid level of 1.5 meters is generally required as a cold source. However, there is a lot of sediment mixed in the river water. Due to sedimentation, the cleanliness of the river water gradually decreases from its surface to the bottom. As the height decreases, the sediment content of the water layer where the water is taken increases, making it difficult to handle the river water during the filtration process. It is very easy to produce scaling substances in the pipe and the content of bacteria and algae will increase, which will cause corrosion, scaling, and slime adhesion. On the one hand, it affects the service life of metal equipment. On the other hand, system scaling and slime adhesion will affect the heat exchange effect of the heat exchanger, reduce the cooling effect of cooling water, block the pipeline, and affect the hydraulic performance of circulating water. These system water quality problems seriously endanger the safe operation of the circulating water system. In actual use, since a single screen cover is usually set at the water intake port, once garbage accumulates or a large garbage cover covers the screen, the water inlet at the water intake port will be reduced, or even no water will enter, resulting in failure of the heat exchange equipment. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to overcome the problem that the temperature of water in the river gradually decreases from its surface to the bottom in the prior art, when cooling water for a workshop, it is generally necessary to take water 1.5 meters below the liquid surface as a cold source. However, the river water is mixed with a large amount of sediment. Due to the sedimentation effect, the cleanliness of the river water also gradually decreases from its surface to the bottom. As the height decreases, the sediment content of the water layer where the water is taken increases, making the river water difficult to handle during the filtration process. A heat exchange system for taking river water as a cold source is provided.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a heat exchange system for taking river water as a cold source, comprising:

[0005] A water intake unit is used to collect river water and transport it to the primary filtering unit. The input end of the water intake unit is located in the river water. The water intake unit includes a connecting pipe, a movable pipe and a buoyancy member. The connecting pipe includes a first connecting section, a heat exchange section and a second connecting section which are connected end to end in sequence. The movable pipe is slidably connected to the first connecting section. The buoyancy member is arranged on the movable pipe. The buoyancy member is used to provide buoyancy for the movable pipe so that the head end of the movable pipe floats on the upper part of the river water to take the upper clear liquid. The heat exchange section is located at the bottom of the river water. The heat exchange section is used to cool the upper clear liquid of the river water. The tail end of the second connecting section is connected to the input end of the primary filtering unit.

[0006] The primary filtering unit is used to filter the river water obtained by the water intake unit, and the output end of the water intake unit is connected to the input end of the primary filtering unit;

[0007] The secondary filtering unit is used to filter the river water filtered by the primary filtering unit, and the output end of the primary filtering unit is connected to the input end of the secondary filtering unit;

[0008] And a heat exchange unit for cooling the workshop, the output end of the secondary filter unit is connected to the heat exchange medium inlet of the heat exchange unit, the heat exchange medium outlet of the heat exchange unit is located at the river water, and the cooling medium of the heat exchange unit is output from the cooling medium outlet, flows through the workshop and flows back to the cooling medium inlet. Through the design of the movable pipe and the connecting pipe that can float up and down, on the one hand, the heat exchange system can take the upper clear liquid of the river water and make the temperature of the upper clear liquid reach the use standard after passing through the bottom of the river water, and on the other hand, the movable pipe can follow the change of the river water level to avoid it from being exposed, and a fixed distance is set between the movable pipe and the liquid surface to ensure that the heat exchange system can continuously take the upper clear liquid.

[0009] In order to solve the problem that garbage such as leaves, branches, and plastic bags floating on the surface of the river water will enter the heat exchange system along the head end port of the movable tube and the garbage will accumulate on the side of the first screen close to the movable tube, the water intake unit further includes a deflection self-cleaning mechanism, the deflection self-cleaning mechanism includes a first screen, a connecting seat, a first positioning seat, a first traction rope, and a first reset element, the connecting seat is arranged in the bottom of the river water, the first screen is rotatably connected to the connecting seat, the first screen is located in front of the movable tube, the first positioning seat is fixedly connected to the bank of the river water, the head end of the first traction rope is fixedly connected to the first positioning seat, the tail end of the first traction rope is fixedly connected to the head end of the first reset element, the tail end of the first reset element is fixedly connected to the front side of the left end of the first screen, and the end of the first screen is in contact with the river bank on its side;

[0010] A baffle is arranged on the bank of the river, the baffle is close to one end of the first screen close to the movable pipe, and the first screen is located upstream of one end of the baffle away from the movable pipe;

[0011] In an initial state, the first screen is arranged obliquely, and an end of the first screen close to the movable tube is located upstream of an end of the first screen away from the movable tube.

[0012] It further includes that the rotation center of the connecting seat and the first screen is close to the movable tube, the distance between the left end of the first screen and the connecting seat is greater than the distance between the right end of the first screen and the connecting seat, the movable tube is located on the rear side of the first screen, and is directly opposite to the area between the connecting seat on the first screen and the first screen. When the first screen rotates, the end of the first screen away from the movable tube approaches the movable tube.

[0013] In order to solve the problem that someone throws garbage between the first screen and the movable pipe and leaves float between the first screen and the movable pipe, thereby covering the second screen, the movable pipe further includes a second screen installed at the pipe mouth, the water intake unit also includes a pipe mouth cleaning mechanism, the pipe mouth cleaning mechanism includes a second positioning seat, a second reset element, a second traction rope and a cleaning head, the second positioning seat is fixedly connected to the bank of the river, the head end of the second traction rope is fixedly connected to the rear side of the right end of the first screen, the tail end of the second traction rope is fixedly connected to the cleaning head, the head end of the second reset element is fixedly connected to the cleaning head, the tail end of the second reset element is fixedly connected to the second positioning seat, and the cleaning head is used to clean the second screen;

[0014] The connecting seat is located between the first restoring element and the second traction rope.

[0015] In order to solve the problem that garbage will adhere to the second screen along the direction of water flow, the cleaning head is further connected to the movable tube through a transmission assembly, the transmission assembly includes a rack, a gear matching the rack, a connecting shaft, a slide rail, a slider matching the slide rail and a ring sleeve, the bottom end of the connecting shaft is fixedly connected to the cleaning head, the connecting shaft is connected to the tail end of the second traction rope and the head end of the second reset element, the upper and lower end surfaces of the rack are equipped with protective plates for preventing the gear from falling off, the gear is installed on the connecting shaft, and the gear and the rack are meshed;

[0016] The slide rail is fixedly connected to the movable tube, the slide rail is slidably connected to the slider, and the slider is rotatably connected to the connecting shaft;

[0017] The ring sleeve is rotatably arranged on the connecting shaft, and the outer ring of the ring sleeve is connected to the tail end of the second traction rope and the head end of the second resetting element.

[0018] It further comprises that the second connecting section is arranged in an inclined manner, and the height of the head end of the second connecting section is lower than the height of the tail end of the second connecting section.

[0019] It further includes a primary filtering unit including a sedimentation tank, a submersible sewage pump, a sewage pipe and a water pump. The tail end of the second connecting section is connected to the sedimentation tank. An inspection port and a vent are provided on the top surface of the sedimentation tank. The submersible sewage pump is arranged on the bottom surface of the sedimentation tank. The input end of the sewage pipe is connected to the output end of the submersible sewage pump. The output end of the sewage pipe extends to the river water. The inner bottom surface of the sedimentation tank is arranged inclined. The inner bottom surface of the sedimentation tank gradually decreases toward the submersible sewage pump. A liquid outlet is provided on the upper part of the sedimentation tank. The input end of the water pump is connected to the liquid outlet, and the output end of the water pump is connected to the input end of the secondary filtering unit.

[0020] It further includes a secondary filtration unit including a cyclone desander and an integrated water treatment unit. The input end of the cyclone desander is connected to the output end of the primary filtration unit, the output end of the cyclone desander is connected to the input end of the integrated water treatment unit, and the output end of the integrated water treatment unit is connected to the input end of the heat exchange unit.

[0021] The heat exchange system further includes a collecting unit, which includes a water collecting tank and a soft water tank. The input end of the water collecting tank is connected to the cooling medium outlet of the workshop, the output end of the water collecting tank is connected to the cooling medium inlet of the heat exchange unit, and the output end of the soft water tank is connected to the input end of the water collecting tank.

[0022] The beneficial effects of the present invention are as follows: the heat exchange system for taking river water as a cold source provided by the present invention, through the design of movable pipes and connecting pipes that can float up and down, on the one hand, enables the heat exchange system to take the upper clear liquid of the river water and make the temperature of the upper clear liquid reach the use standard after passing through the bottom of the river water; on the other hand, enables the movable pipe to follow the changes in the water level of the river water to avoid being exposed, and ensures that there is a fixed distance between the movable pipe and the liquid surface, ensuring that the heat exchange system can continuously take the upper clear liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the water intake unit and the primary filtering unit of the present invention;

[0026] Figure 3 The present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 4 It is a schematic diagram of the structure of the water intake unit of the present invention in a top view;

[0028] Figure 5 The present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0029] Figure 6 The present invention Figure 4 A schematic diagram of the structure of the first screen in a deflection state;

[0030] Figure 7 The present invention Figure 5 Schematic diagram of the structure without slide rails, sliders and protective plates.

[0031] In the figure: 1, water intake unit, 11, connecting pipe, 111, first connecting section, 112, heat exchange section, 113, second connecting section, 12, movable pipe, 13, buoyancy member, 14, deflection self-cleaning mechanism, 141, first screen, 142, connecting seat, 143, first positioning seat, 144, first traction rope, 145, first reset element, 146, baffle, 15, second screen, 16, pipe mouth cleaning mechanism, 161, second positioning seat, 162, second reset element, 163, second traction rope, 164, cleaning head, 165, transmission assembly, 1651, rack, 1652, gear, 1653, connecting shaft, 1654, protective plate, 1655, slide rail, 1656, slider, 1657, ring sleeve;

[0032] 2. Primary filtration unit, 21. Settling tank, 211. Inspection port, 212. Vent port, 213. Liquid outlet, 22. Submersible sewage pump, 23. Drain pipe, 24. Water pump;

[0033] 3. Secondary filtration unit, 31. Cyclone desander, 32. Integrated water treatment unit;

[0034] 4. Heat exchange unit;

[0035] 5. Workshop;

[0036] 6. Collection unit, 61. Water collecting tank, 62. Soft water tank. DETAILED DESCRIPTION

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0038] like Figure 1 This is a schematic diagram of the structure of the present invention, a heat exchange system for taking river water as a cold source, comprising:

[0039] like Figure 2 , Figure 3As shown, the water intake unit 1 is used to collect river water and transport it to the primary filtering unit 2. The input end of the water intake unit 1 is located in the river water. The water intake unit 1 includes a connecting pipe 11, a movable pipe 12 and a buoyancy member 13. The connecting pipe 11 and the movable pipe 12 are both rigid straight pipes, so that the movable pipe 12 can only move up and down. The connecting pipe 11 includes a first connecting section 111, a heat exchange section 112 and a second connecting section 113 connected end to end in sequence. The movable pipe 12 is slidably connected to the first connecting section 111, and the movable pipe 12 can move up and down along the axis direction of the first connecting section 111. The buoyancy member 13 is arranged on the movable pipe 12. The buoyancy member 13 is used to provide buoyancy for the movable pipe 12, so that the head end port of the movable pipe 12 floats on the upper part of the river water to take the upper clear liquid. The buoyancy member 13 enables The head end of the movable tube 12 is 5-10 cm away from the liquid surface of the river water, the heat exchange section 112 is located at the bottom of the river water, and the heat exchange section 112 is used to cool the upper clear liquid of the river water. The tail end of the second connecting section 113 is connected to the input end of the primary filtering unit 2. More preferably, the heat exchange section 112 is buried in the silt at the bottom of the river water. Through the design of the movable tube 12 and the connecting tube 11 that can float up and down, on the one hand, the heat exchange system can take the upper clear liquid of the river water and make the temperature of the upper clear liquid reach the use standard after passing through the bottom of the river water. On the other hand, the movable tube 12 can follow the change of the water level of the river water to avoid being exposed, and a fixed distance is set between the movable tube 12 and the liquid surface to ensure that the heat exchange system can continuously take the upper clear liquid.

[0040] like Figure 3 , Figure 4 , Figure 5 As shown, the water intake unit 1 also includes a deflected self-cleaning mechanism 14, which includes a first screen 141, a connecting seat 142, a first positioning seat 143, a first traction rope 144 and a first reset element 145. The connecting seat 142 is arranged at the bottom of the river water, and the connecting seat 142 is located between the first reset element 145 and the second traction rope 163. Furthermore, the connecting seat 142 is fixed in the silt at the bottom of the river water. In another embodiment, the connecting seat 142 and the connecting pipe 11 are fixedly connected, and the deflected self-cleaning mechanism 14 can avoid failure of the second screen 15.

[0041] The first screen 141 is rotatably connected to the connecting seat 142. The first screen 141 is located in front of the movable tube. The first positioning seat 143 is fixedly connected to the bank of the river. The head end of the first traction rope 144 is fixedly connected to the first positioning seat 143. The tail end of the first traction rope 144 is fixedly connected to the head end of the first reset element 145. The tail end of the first reset element 145 is fixedly connected to the left front side of the first screen 141. The first reset element 145 is a spring. The connecting seat 142 and the first screen 141 are connected to the first positioning seat 143. The rotation center of the net 141 is close to the movable tube 12, the distance between the left end of the first screen 141 and the connecting seat 142 is greater than the distance between the right end of the first screen 141 and the connecting seat 142, the movable tube 12 is located at the rear side of the first screen 141, and is directly opposite to the area between the connecting seat 142 on the first screen 141 and the first screen 141, that is, the rotation center of the first screen 141 is eccentrically arranged, and the rotation center of the first screen 141 is close to the second traction rope 163;

[0042] The side of the first screen 141 facing the flow direction of the river water is set as the front side, and the other side is set as the rear side.

[0043] When the first screen 141 rotates, the end of the first screen 141 away from the movable pipe 12 approaches the movable pipe 12, and the end of the first screen 141 is attached to the river bank on its side, and the further connection seat 142 is fixedly connected to the connection pipe 11;

[0044] The top of the first screen 141 is located above the liquid surface of the river water, and the bottom of the first screen 141 is located below the liquid surface of the river water.

[0045] A baffle 146 is arranged on the bank of the river, the baffle 146 is close to the end of the first screen 141 close to the movable tube 12, and the end of the first screen 141 away from the movable tube 12 is located upstream of the baffle 146. The design of the baffle 146 can, on the one hand, support the first screen 141 to prevent the first reset element 145 from being subjected to a large force, and on the other hand, can prevent the first screen 141 from rotating clockwise;

[0046] In the initial state, the first screen 141 is arranged at an angle, and the end of the first screen 141 close to the movable tube 12 is located upstream of the end of the first screen 141 away from the movable tube 12, which can make the garbage accumulate at the end of the first screen 141 away from the movable tube 12, avoiding a large amount of accumulation of the garbage at the end of the first screen 141 close to the movable tube 12 causing it to rotate clockwise.

[0047] The first screen 141 can block the garbage on the surface of the river water and prevent the garbage and leaves on the surface of the river water from entering the movable tube 12. The first screen 141 is a rotatable structure and is designed with the first traction rope 144 and the first reset element 145 to maintain the initial state of the first screen 141. Due to the accumulation of garbage and leaves, the flow of water is blocked, thereby increasing the force on the first screen 141, causing the first screen 141 to deflect after exceeding a certain level. At this time, the leaves and garbage will detach from the first screen 141 and flow away along the river water. Due to the obstruction of the first screen 141, the garbage can be prevented from flowing into the movable tube 12. The first screen 141 can be reset under the action of the first reset element 145 after the garbage flows away.

[0048] like Figure 4 , Figure 6 As shown, the arrow in the figure represents the flow direction of water in the river, and the first screen 141 and the movable pipe 12 are arranged in sequence along the flow direction of the water.

[0049] like Figure 3 , Figure 5 As shown, a second screen 15 is installed at the pipe mouth of the movable pipe 12, and the water intake unit 1 also includes a pipe mouth cleaning mechanism 16, which includes a second positioning seat 161, a second reset element 162, a second traction rope 163 and a cleaning head 164. The second positioning seat 161 is fixedly connected to the bank of the river, the head end of the second traction rope 163 is fixedly connected to the rear side of the right end of the first screen 141, the tail end of the second traction rope 163 is fixedly connected to the cleaning head 164, the head end of the second reset element 162 is fixedly connected to the cleaning head 164, the tail end of the second reset element 162 is fixedly connected to the second positioning seat 161, and the cleaning head 164 is used to clean the second screen 15.

[0050] When the first screen 141 is deflected, the connecting shaft 1653 is pulled by the second traction rope 163. Due to the restrictions of the gear 1652 and the rack 1651, the connecting shaft 1653 can rotate during the movement, so that the cleaning head 164 rotates to clean the garbage or leaves on the second screen 15. After the first screen 141 is reset, the cleaning head 164 is reset by the action of the second reset element 162. The present application can utilize the flow of water in the river to achieve self-cleaning, and the design of the first traction rope 144, the first reset element 145, the second reset element 162 and the second traction rope 163 can enable it to follow the up and down floating changes of the movable tube 12.

[0051] like Figure 2 , Figure 3 , Figure 7As shown, the cleaning head 164 is connected to the movable tube 12 through a transmission assembly 165, and the transmission assembly 165 includes a rack 1651, a gear 1652 matching the rack 1651, a connecting shaft 1653, a slide rail 1655, a slider 1656 matching the slide rail 1655, and a ring sleeve 1657. The bottom end of the connecting shaft 1653 is fixedly connected to the cleaning head 164, and the connecting shaft 1653 connects the tail end of the second traction rope 163 and the head end of the second reset element 162. The second reset element 162 is a spring. The upper and lower end surfaces of the rack 1651 are provided with a spring for preventing the gear 1652 from falling off. The protective plate 1654 and the gear 1652 are installed on the connecting shaft 1653, and the gear 1652 is meshed with the rack 1651. In the present application, at least two racks 1651 are provided, so that the connecting shaft 1653 is stable as a whole. The protective plate 1654 can prevent the gear 1652 from being separated from the rack 1651. The slide rail 1655 and the movable tube 12 are fixedly connected, the slide rail 1655 and the slider 1656 are slidably connected, and the slider 1656 and the connecting shaft 1653 are rotatably connected. Through the design of the slide rail 1655 and the slider 1656, the connecting shaft 1653 is stabilized to prevent the gear 1652 from being separated from the rack 1651.

[0052] The ring sleeve 1657 is rotatably arranged on the connecting shaft 1653 , and the outer ring of the ring sleeve 1657 connects the tail end of the second traction rope 163 and the head end of the second restoring element 162 to prevent the second traction rope 163 and the second restoring element 162 from being entangled on the connecting shaft 1653 .

[0053] The second connecting section 113 is arranged obliquely, and the height of the head end of the second connecting section 113 is lower than the height of the tail end of the second connecting section 113, so that the water flow entering the primary filtering unit 2 tends to be calm, thereby improving the sedimentation efficiency.

[0054] like Figure 1 , Figure 2As shown, the primary filtering unit 2 is used to filter the river water obtained by the water intake unit 1, and the output end of the water intake unit 1 is connected to the input end of the primary filtering unit 2; the primary filtering unit 2 includes a sedimentation tank 21, a submersible sewage pump 22, a sewage pipe 23 and a water pump 24, the tail end of the second connecting section 113 is connected to the sedimentation tank 21, the top surface of the sedimentation tank 21 is provided with an inspection port 211 and a vent 212, the submersible sewage pump 22 is arranged on the bottom surface of the sedimentation tank 21, the input end of the sewage pipe 23 is connected to the output end of the submersible sewage pump 22, and the submersible sewage pump 24 is connected to the bottom surface of the sedimentation tank 21. The pump 22 is used to discharge the settled silt to prevent the silt from accumulating in the sedimentation tank 21. The output end of the sewage pipe 23 extends to the river water. The inner bottom surface of the sedimentation tank 21 is arranged inclined so that the silt flows to the submersible sewage pump 22 in the sedimentation tank 21. The inner bottom surface of the sedimentation tank 21 gradually decreases toward the submersible sewage pump 22. A liquid outlet 213 is opened on the upper part of the sedimentation tank 21. A filter net is installed in the liquid outlet 213. The input end of the water pump 24 is connected to the liquid outlet 213, and the output end of the water pump 24 is connected to the input end of the secondary filter unit 3.

[0055] like Figure 1 As shown, the secondary filter unit 3 is used to filter the river water filtered by the primary filter unit 2, and the output end of the primary filter unit 2 is connected to the input end of the secondary filter unit 3; the secondary filter unit 3 includes a cyclone desander 31 and an integrated water processor 32, the input end of the cyclone desander 31 is connected to the output end of the primary filter unit 2, the output end of the cyclone desander 31 is connected to the input end of the integrated water processor 32, and the output end of the integrated water processor 32 is connected to the input end of the heat exchange unit 4.

[0056] like Figure 1 As shown, the heat exchange unit 4 is used to cool the workshop 5. The output end of the secondary filtration unit 3 is connected to the heat exchange medium inlet of the heat exchange unit 4. The heat exchange medium outlet of the heat exchange unit 4 is located at the river water. The cooling medium of the heat exchange unit 4 is output from the cooling medium outlet, flows through the workshop 5 and flows back to the cooling medium inlet. The heat exchange unit 4 is a heat exchanger.

[0057] like Figure 1 As shown, the heat exchange system also includes a collecting unit 6, which includes a water collecting tank 61 and a soft water tank 62. The input end of the water collecting tank 61 is connected to the cooling medium outlet of the workshop 5, the output end of the water collecting tank 61 is connected to the cooling medium inlet of the heat exchange unit 4, and the output end of the soft water tank 62 is connected to the input end of the water collecting tank 61.

[0058] When the first screen 141 is in the initial state:

[0059] The right end of the first screen 141 abuts against the baffle 146 on the bank on the right side of the river, and the right end of the first screen 141 contacts or does not contact the bank on the left side of the river, and the left end of the first screen 141 contacts or does not contact the bank on the left side of the river. At this time, the first screen 141 is in an initial state. In the initial state, the second reset element 162 pulls the slider 1656 and the second traction rope 163 through its own elastic force, and finally drives the right end of the first screen 141, so that the right end of the first screen 141 abuts against the baffle 146; it is worth noting that when the first screen 141 is in the initial state, the first traction rope 144 can be designed as follows Figure 4 The relaxed state shown may also be designed as a tightened state (not shown in the figure), that is, the left end of the first screen 141 is pulled by the first reset element 145 so that the right end of the first screen 141 abuts against the baffle 146;

[0060] When the first screen 141 is in the initial state, garbage floating in the river water will be blocked by the first screen 141 to prevent a large plastic bag from directly covering the second screen 15, thereby preventing the second screen 15 from being infiltrated with water.

[0061] When the first screen 141 is in the initial state:

[0062] The first screen 141 is in an inclined state, and the position of the right end of the first screen 141 in the river water is located upstream of the position of the left end of the first screen 141 in the river water. In this state, the garbage floating in the river water tends to accumulate on the left side of the first screen 141, so that after the first screen 141 rotates, it flows away from the gap between the left end of the first screen 141 and the river bank on its side (such as Figure 6 As shown), the possibility of garbage flowing downstream and passing through the second screen 15 again is reduced.

[0063] When the first screen 141 is in a deflected state:

[0064] Since a large amount of garbage is accumulated in front of the first screen 141, the force on the first screen 141 increases, and the elastic force of the first reset element 145 and the elastic force of the second reset element 162 cannot maintain the first screen 141 in the initial state. Moreover, since the rotation center of the first screen 141 is biased toward the second traction rope 163, the left end of the first screen 141 approaches the second screen 15, and the right end of the first screen 141 moves away from the second screen 15, that is, the left end of the first screen 141 is separated from the baffle 146. At this time, the garbage flows away from the gap between the left end of the first screen 141 and the river bank.

[0065] During the rotation of the first screen 141, the connecting shaft 1653 is pulled by the second traction rope 163. Due to the restrictions of the gear 1652 and the rack 1651, the connecting shaft 1653 can move along the extension direction of the rack 1651 and realize self-rotation during the movement, so that the cleaning head 164 rotates to clean the garbage or leaves on the second screen 15. At this time, the second reset element 162 is in an extended state under the action of the second traction rope 163 and has elastic contraction force;

[0066] After the garbage flows downstream, the force on the first screen 141 is reduced, and due to the elastic contraction force of the first reset element 145 and the elastic contraction force of the second reset element 162, the first screen 141 is reset to its initial state, that is, the right end of the first screen 141 is in contact with the baffle 146.

[0067] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A heat exchange system for using river water as a cold source, characterized in that: include: A water intake unit (1) is used to collect river water and transport it to a primary filtering unit (2); the input end of the water intake unit (1) is located in the river water; the water intake unit (1) comprises a connecting pipe (11), a movable pipe (12) and a buoyancy member (13); the connecting pipe (11) comprises a first connecting section (111), a heat exchange section (112) and a second connecting section (113) which are connected end to end in sequence; the movable pipe (12) and the first connecting section (111) are slidably connected; the buoyancy member (13) is arranged on the movable pipe (12); the buoyancy member (13) is used to provide buoyancy for the movable pipe (12) so that the head end of the movable pipe (12) floats on the upper part of the river water to collect upper clear liquid; the heat exchange section (112) is located at the bottom of the river water; the heat exchange section (112) is used to cool the upper clear liquid of the river water; the tail end of the second connecting section (113) is connected to the input end of the primary filtering unit (2); A primary filtering unit (2) is used to filter the river water obtained by the water intake unit (1), the output end of the water intake unit (1) being connected to the input end of the primary filtering unit (2); A secondary filtering unit (3) is used to filter the river water filtered by the primary filtering unit (2), wherein the output end of the primary filtering unit (2) is connected to the input end of the secondary filtering unit (3); and a heat exchange unit (4) for cooling the workshop (5), wherein the output end of the secondary filter unit (3) is connected to the heat exchange medium inlet of the heat exchange unit (4), the heat exchange medium outlet of the heat exchange unit (4) is located at the river water, and the cooling medium of the heat exchange unit (4) is output from the cooling medium outlet, flows through the workshop (5) and flows back to the cooling medium inlet; The water intake unit (1) further comprises a deflection self-cleaning mechanism (14), the deflection self-cleaning mechanism (14) comprising a first screen (141), a connecting seat (142), a first positioning seat (143), a first traction rope (144) and a first reset element (145), the connecting seat (142) being arranged at the bottom of the river water, the first screen (141) and the connecting seat (142) being rotatably connected, the first screen (141) being located in front of the movable tube, the first positioning seat (143) being fixedly connected to the bank of the river water, the head end of the first traction rope (144) being fixedly connected to the first positioning seat (143), the tail end of the first traction rope (144) being fixedly connected to the head end of the first reset element (145), the tail end of the first reset element (145) being fixedly connected to the front side of the left end of the first screen (141), and the end of the first screen (141) being in contact with the bank of the river water on its side; A baffle (146) is arranged on the bank of the river, the baffle (146) is close to one end of the first screen (141) close to the movable tube (12), and the end of the first screen (141) away from the movable tube (12) is located upstream of the baffle (146); In an initial state, the first screen (141) is arranged obliquely, with an end of the first screen (141) close to the movable tube (12) located upstream of an end of the first screen (141) away from the movable tube (12).

2. A heat exchange system for using river water as a cold source as claimed in claim 1, characterized in that: The rotation centers of the connecting seat (142) and the first screen (141) are close to the movable tube (12); the distance between the left end of the first screen (141) and the connecting seat (142) is greater than the distance between the right end of the first screen (141) and the connecting seat (142); the movable tube (12) is located at the rear side of the first screen (141) and is directly opposite to the area between the connecting seat (142) and the first screen (141) on the first screen (141); when the first screen (141) rotates, the end of the first screen (141) away from the movable tube (12) approaches the movable tube (12).

3. A heat exchange system for using river water as a cold source as claimed in claim 1, characterized in that: A second screen (15) is installed at the mouth of the movable pipe (12); the water intake unit (1) further comprises a mouth cleaning mechanism (16); the mouth cleaning mechanism (16) comprises a second positioning seat (161), a second reset element (162), a second traction rope (163) and a cleaning head (164); the second positioning seat (161) is fixedly connected to the bank of the river; the head end of the second traction rope (163) is fixedly connected to the rear side of the right end of the first screen (141); the tail end of the second traction rope (163) is fixedly connected to the cleaning head (164); the head end of the second reset element (162) is fixedly connected to the cleaning head (164); the tail end of the second reset element (162) is fixedly connected to the second positioning seat (161); and the cleaning head (164) is used to clean the second screen (15); The connecting seat (142) is located between the first resetting element (145) and the second traction rope (163).

4. A heat exchange system for using river water as a cold source as claimed in claim 3, characterized in that: The cleaning head (164) is connected to the movable tube (12) via a transmission assembly (165); the transmission assembly (165) comprises a rack (1651), a gear (1652) matching the rack (1651), a connecting shaft (1653), a slide rail (1655), a slider (1656) matching the slide rail (1655), and a ring sleeve (1657); the bottom end of the connecting shaft (1653) is fixedly connected to the cleaning head (164); protective plates (1654) for preventing the gear (1652) from falling off are installed on the upper and lower end surfaces of the rack (1651); the gear (1652) is installed on the connecting shaft (1653), and the gear (1652) and the rack (1651) are meshed; The slide rail (1655) and the movable tube (12) are fixedly connected, the slide rail (1655) and the slider (1656) are slidably connected, and the slider (1656) and the connecting shaft (1653) are rotationally connected; The ring sleeve (1657) is rotatably arranged on the connecting shaft (1653), and the outer ring of the ring sleeve (1657) is connected to the tail end of the second traction rope (163) and the head end of the second resetting element (162).

5. A heat exchange system for using river water as a cold source as claimed in claim 1, characterized in that: The second connecting section (113) is arranged in an inclined manner, and the height of the head end of the second connecting section (113) is lower than the height of the tail end of the second connecting section (113).

6. A heat exchange system for using river water as a cold source as claimed in claim 1, characterized in that: The primary filtration unit (2) comprises a sedimentation tank (21), a submersible sewage pump (22), a sewage discharge pipe (23) and a water pump (24); the tail end of the second connecting section (113) is connected to the sedimentation tank (21); an inspection port (211) and a vent (212) are provided on the top surface of the sedimentation tank (21); the submersible sewage pump (22) is arranged on the bottom surface of the sedimentation tank (21); the input end of the sewage discharge pipe (23) and the submersible sewage pump (22) are connected to each other. The output end of the sewage pipe (23) is connected to the river water, the inner bottom surface of the sedimentation tank (21) is arranged in an inclined manner, and the inner bottom surface of the sedimentation tank (21) gradually decreases towards the submersible sewage pump (22). The upper part of the sedimentation tank (21) is provided with a liquid outlet (213), the input end of the water pump (24) is connected to the liquid outlet (213), and the output end of the water pump (24) is connected to the input end of the secondary filtration unit (3).

7. A heat exchange system for using river water as a cold source as claimed in claim 1, characterized in that: The secondary filtering unit (3) comprises a cyclone desander (31) and an integrated water treatment unit (32); the input end of the cyclone desander (31) is connected to the output end of the primary filtering unit (2); the output end of the cyclone desander (31) is connected to the input end of the integrated water treatment unit (32); and the output end of the integrated water treatment unit (32) is connected to the input end of the heat exchange unit (4).

8. A heat exchange system for using river water as a cold source as claimed in claim 1, characterized in that: The heat exchange system further comprises a collection unit (6), wherein the collection unit (6) comprises a water collecting tank (61) and a soft water tank (62), wherein the input end of the water collecting tank (61) is connected to the cooling medium outlet of the workshop (5), the output end of the water collecting tank (61) is connected to the cooling medium inlet of the heat exchange unit (4), and the output end of the soft water tank (62) is connected to the input end of the water collecting tank (61).

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