Mechanical ventilation cooling tower

Abstract

The utility model discloses a mechanical ventilation cooling tower which comprises a cooling tower body and a circulating water pool, and an air outlet is formed in the top of the cooling tower body. An exhaust fan is arranged at the air outlet, an air inlet is formed in the side edge of the bottom of the cooling tower body, a protection structure is arranged on the air inlet, and the protection structure comprises a fixing frame and a blocking net installed on the fixing frame; the fixing frame is fixed to the air inlet and comprises an upper supporting frame and a lower supporting strip, a connecting rod is arranged between the upper supporting frame and the lower supporting strip, and a rain baffle is arranged at the upper end of the upper supporting frame. The windward side of the blocking net is obliquely and downwards arranged between the upper supporting plate and the lower supporting strip, the upper end of the blocking net is detachably connected with the upper supporting frame through a rotary connecting mechanism, and the lower end of the blocking net is fixed to the lower supporting strip through a locking mechanism. According to the mechanical ventilation cooling tower, fallen leaves attached to the surface of the mechanical ventilation cooling tower can be automatically cleaned under the condition that wind power is reduced, manual cleaning work is reduced, and the blocking net is simple in structure and convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat power generation equipment, in particular to a mechanical ventilation cooling tower. Background Art

[0002] With the development of modern science and technology, energy conservation and emission reduction have become the focus of worldwide attention and an important topic for my country's sustainable development. Waste heat power generation technology can use the heat emitted by the factory to generate electricity without additional fuel consumption, and the power generation process does not produce any pollution. It is a green power generation technology with considerable economic benefits, clean and environmentally friendly, and in line with the national clean and energy-saving industry policy. It can achieve optimal allocation of corporate resources, integrate green development, reduce atmospheric pollutant emissions, and improve air quality. It is of strategic significance for sustainable and high-quality development. The cooling tower is an important component in the equipment that uses waste heat to generate electricity.

[0003] For cement plants, when heating stones, the exhaust contains a lot of heat, which can be reused using waste heat power generation technology. Therefore, many cement plants have built waste heat power generation sections. The cooling tower, as an important part of the waste heat power generation section, works to transport the water required for cooling to the upper part of the cooling tower, and then evenly spray it on the filler through the water distribution system. The hot water falls from the upper part of the water-sprayed filler and exchanges heat with the unsaturated air at the same time. The air transfers the heat to the outside and becomes hot air. The electric fan then draws the hot air out of the tower, thereby achieving the effect of lowering the water temperature. However, in cement plants, the cooling tower is used to cool the water. When a large cooling tower is built in a factory, due to its large size, the cooling tower body is generally built on-site with a concrete structure, and an air inlet is provided at the bottom of the cooling tower. In order to prevent the fallen leaves of the trees near the cooling tower from entering the circulating water system with the air intake of the cooling fan, a grille is generally provided at the air inlet of the cooling tower. Although the grille can block the fallen leaves and garbage from entering the circulating water pool, the effect is good, but due to the large air pressure, the fallen leaves will cling to the grille, which will increase the air intake resistance and affect the heat dissipation of the circulating water system. In order to clean the fallen leaves on the barrier net, the cooling fan needs to be started and stopped frequently, and manual cleaning is required, which increases the labor intensity and maintenance cost. Summary of the invention

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a mechanical ventilation cooling tower, whose air inlet adopts a barrier net to prevent fallen leaves from entering, and the windward side of the barrier net is arranged obliquely downward. When the wind force decreases, the fallen leaves attached to its surface can fall under the action of their own gravity, reducing the work of manual cleaning, and the barrier net has a simple structure and is easy to disassemble and assemble.

[0005] The utility model is realized through the following technical solutions:

[0006] A mechanical ventilation cooling tower comprises a cooling tower body and a circulating water pool located at the bottom of the cooling tower body, the bottom of the cooling tower body is connected to the circulating water pool, and an air outlet is arranged on the top; an exhaust fan is arranged at the air outlet, an air inlet is arranged on the bottom side of the cooling tower body, and a protective structure is arranged on the air inlet, and the protective structure comprises a fixing frame and a blocking net installed on the fixing frame; the fixing frame is fixed at the air inlet, the fixing frame comprises an upper supporting frame and a lower supporting bar, a connecting rod is arranged between the upper supporting frame and the lower supporting bar, and a rain shield is arranged at the upper end of the upper supporting frame; the windward surface of the blocking net is arranged obliquely downward between the upper supporting plate and the lower supporting bar, and the upper end of the blocking net is detachably connected to the upper supporting frame by a rotating connecting mechanism, and the lower end is fixed to the On the lower support bar; in the present technical scheme, the cooling tower body is constructed of a concrete structure, and the fixed frame can provide a mounting base for the baffle net, which is convenient for the later fixation of the baffle net. It includes an upper support frame and a lower support bar, so that the windward side of the baffle net can be arranged obliquely downward. When the wind force decreases, the fallen leaves attached to its surface can fall off under the action of their own gravity, reducing the work of manual cleaning, and the upper end of the baffle net is detachably connected to the upper support frame through a rotating connecting mechanism, and the lower end is fixed to the lower support bar through a locking mechanism. When the locking mechanism is opened, the baffle net can be opened automatically under the action of gravity and will not fall, which is convenient for staff to enter the cooling tower for maintenance, and the baffle net can be easily disassembled and assembled on the upper support frame, which is convenient for later maintenance.

[0007] Preferably, a triangular support rod is provided between the upper support frame and the lower support bar; in the present technical solution, the triangular support rod can form a stable triangular force-bearing structure between the upper support frame and the lower support bar, thereby improving the overall structural strength of the fixing frame.

[0008] Preferably, the rotating connection mechanism includes a hook fixed on the front end of the upper support frame and a lifting ear fixed on the upper end of the blocking net and an adaptable hook; in the present technical solution, the hook has a simple structure and is easy to manufacture, and its upper part is an open structure. The blocking net can be movably mounted on the hook through the lifting ear. When the blocking net needs to be opened or replaced, it is only necessary to open the locking mechanism below, and the blocking net can also be conveniently removed from the hook.

[0009] Preferably, the cross-section of the lower support bar is L-shaped; the locking mechanism includes a latch and a pin seat, the pin seat is fixed to the lower end of the baffle net, and the pin seat is provided with a guide hole adapted to the latch, and the lower support bar is provided with a pin hole adapted to the latch; in the present technical solution, the cross-section of the lower support bar is L-shaped, and its vertical portion can limit the position of the baffle net; the locking mechanism includes a latch and a pin seat, and the baffle net can be limited and fixed by the cooperation of the latch and the pin hole, and its operation is convenient, and its structure is simple and easy to manufacture.

[0010] Further preferably, a snap-in groove is provided at the bottom of the latch, a snap-in mechanism is provided on the lower support bar, and the snap-in mechanism includes a shell, a snap-in block and a reset spring; an open movable cavity is provided in the middle of the shell, a through hole for fitting the pin shaft is provided at the bottom of the movable cavity, and an operating hole is provided on the outer wall; a snap-in hole for fitting the snap-in groove is provided on the snap-in block, and the snap-in block is slidably connected in the movable cavity in the middle of the shell; the reset spring is fixed between the inner wall of the movable cavity and the snap-in block, and is used to provide a reset elastic force for the snap-in block; in the present technical solution, the snap-in groove and the snap-in mechanism can limit the position of the latch to prevent it from accidentally loosening, and add a hidden protection measure to prevent non-staff from opening the baffle net at will and entering the cooling tower. When the baffle net needs to be opened, it is necessary to use a tool to push the snap-in block from the operating hole so that the snap-in hole on the snap-in block is separated from the snap-in groove.

[0011] Further preferably, the inner side wall of the movable cavity is provided with a limit block for limiting the movable distance of the snap-in block; in the present technical solution, the limit block can limit the moving distance of the snap-in block, making it convenient for the staff to accurately push the snap-in block to the appropriate position and facilitate opening the baffle.

[0012] Preferably, the exhaust fan is a variable frequency fan; in the present technical solution, the variable frequency fan can change its own rotation speed as needed, and there is no need to stop the cooling fan when cleaning attachments, which can extend the life of the cooling fan motor and circuit breaker and reduce the failure rate.

[0013] Preferably, the barrier net is composed of a plurality of barrier net units, and the barrier net unit includes a rectangular frame and a metal net installed on the rectangular frame; in the present technical solution, the barrier net is composed of a plurality of small-area barrier net units, which can reduce the difficulty of making the barrier net and the maintenance cost. At the same time, in the process of installing the barrier net, there is no need to use large lifting equipment, which greatly reduces the difficulty of installing the barrier net.

[0014] The beneficial effects of the utility model are: 1. A baffle net is provided at the air inlet of the cooling tower, and the windward surface of the baffle net can be arranged obliquely downward. When the wind force decreases, the fallen leaves attached to its surface can fall off under the action of their own gravity, reducing the work of manual cleaning; 2. The upper end of the baffle net of the cooling tower is detachably connected to the upper support frame through a rotating connecting mechanism, and the lower end is fixed to the lower support bar through a locking mechanism. When the locking mechanism is opened, the baffle net can be opened automatically under the action of gravity and will not fall off, which is convenient for staff to enter the cooling tower for maintenance, and the baffle net can be easily disassembled and assembled on the upper support frame, which is convenient for later maintenance; 3. The locking mechanism at the lower end of the baffle net of the cooling tower adopts a structural form of a pin and a pin hole, which is easy to operate, and the pin is positioned by a clamping mechanism to prevent it from being accidentally loosened, adding a hidden protection measure to prevent non-staff from casually opening the baffle net and entering the cooling tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a mechanical ventilation cooling tower described in Example 1;

[0016] Figure 2 is a schematic diagram of the structure of the fixing frame described in Example 1;

[0017] Figure 3 It is a structural schematic diagram of the locking mechanism described in Example 1;

[0018] Figure 4 The schematic diagram of the arrangement structure of the barrier net in the first embodiment;

[0019] Figure 5 It is a structural schematic diagram of the retaining net described in Example 1;

[0020] Figure 6 It is a schematic diagram of the structure of the pin shaft described in Example 1;

[0021] Figure 7 It is a three-dimensional structural schematic diagram of the clamping mechanism described in the first embodiment;

[0022] Figure 8 It is a schematic diagram of the locking pin state of the clamping mechanism described in the first embodiment;

[0023] Fig. 9 It is a schematic diagram of the state where the clamping mechanism described in the first embodiment is released from the pin shaft;

[0024] In the figure: 1. cooling tower body; 2. circulating water pool; 3. air outlet; 4. air inlet; 5. packing layer; 6. spray water pipe; 7. exhaust fan; 8. fixing frame; 81. upper support frame; 811. hook; 82. lower support bar; 821. pin hole; 83. connecting rod; 84. triangular support rod; 9. rain shield; 10. blocking net; 101. rectangular frame; 102. metal net; 103. lifting ear; 11. locking mechanism; 111. pin seat; 112. latch; 1121. snap-in groove; 12. snap-in mechanism; 121. shell; 1211. through hole; 1212. operating hole; 122. snap-in block; 1221. snap-in hole; 123. reset spring; 124. limit block. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the various embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] like Figures 1 to 9 As shown, a mechanical ventilation cooling tower comprises a cooling tower body 1 and a circulating water pool 2 located at the bottom of the cooling tower body 1, the cooling tower body 1 is constructed of a concrete structure, the bottom of the cooling tower body 1 is connected to the circulating water pool 2, a packing layer 5 is provided in the middle, and a spray water pipe 6 is provided above the packing layer 5. An air outlet 3 is provided at the top of the cooling tower body 1, an exhaust fan 7 is provided at the air outlet 3, and an air inlet 4 is provided on the bottom side of the cooling tower body 1, a protective structure is provided on the air inlet, and the protective structure comprises a fixing frame 8 and a baffle 10 installed on the fixing frame 8; the fixing frame 8 is fixed at the air inlet, and the fixing frame 8 comprises an upper support frame 81 and a lower support bar 82, the upper support frame 81 is a rectangular frame structure, and is welded by square aluminum tubes; a connecting rod 83 is provided between the upper support frame 81 and the lower support bar 82, the connecting rod 83 is made of angle aluminum, and a bolt hole is provided on the connecting rod 83, which can be expanded by an expansion bolt The upper end of the barrier net 10 is rotatably connected to the upper support frame 81, and the lower end is fixed to the lower support bar 82 by a locking mechanism.

[0028] Preferably, a triangular support rod 84 is provided between the upper support frame 81 and the lower support bar 82, and the triangular support rod 84 can form a stable triangular force-bearing structure between the upper support frame 81 and the lower support bar 82, thereby enhancing the overall structure of the lifting bracket; a hook 811 is provided at the front end of the upper support frame 81, and a lifting ear 103 adapted to the hook is provided at the upper end of the retaining net 10, and the retaining net 10 can be movably mounted on the hook 811 through the lifting ear 103. When the retaining net needs to be opened or replaced, it is only necessary to open the locking mechanism below; specifically, the cross-section of the lower support bar 82 is an L-shaped structure, which can be made of angle aluminum; the locking mechanism 11 includes a latch 112 and a pin The pin seat 111 is fixed to the lower end of the baffle, and the pin seat 111 is provided with a guide hole adapted to the plug pin 112, and the lower support bar 82 is provided with a pin hole 821 adapted to the plug pin 112; the bottom of the plug pin 112 is provided with a snap-in groove 1121, and the lower support bar 82 is provided with a snap-in mechanism 12, and the snap-in mechanism 12 includes a shell 121, a snap-in block 122 and a reset spring 123; an open active cavity is provided in the middle of the shell 121, and a through hole 1211 adapted to the pin shaft is provided at the bottom of the active cavity, and an operating hole 1212 is provided on the outer wall; a snap-in hole 1221 adapted to the snap-in groove 1121 is provided on the snap-in block 122, and the snap-in block 12 2 is slidably connected in the active cavity in the middle of the shell 121; the reset spring 123 is fixed between the inner side wall of the active cavity and the clamping block, and is used to provide a reset elastic force for the clamping block 122, so that the clamping hole 1221 on the clamping block 122 is embedded in the clamping groove 1121 at the bottom of the latch 112, and is locked to prevent it from being accidentally loosened. It can also add a hidden protection measure to prevent non-staff from opening the baffle net at will to enter the cooling tower. When the baffle net needs to be opened, it is necessary to use a tool to push the clamping block 122 from the operating hole 1212 to make the clamping hole 1221 on the clamping block 122 disengage from the clamping groove 1121; further, it is convenient for the staff to accurately open the clamping block 1 22 is pushed to a suitable position, and the inner wall of the movable cavity is provided with a limit block 124 for limiting the movable distance of the clamping block; the exhaust fan 7 is a variable frequency fan, which can change its own rotation speed as needed. When cleaning attachments, there is no need to stop the cooling fan, which can extend the life of the cooling fan motor and the circuit breaker and reduce the failure rate; the blocking net 10 is composed of a plurality of blocking net units, and the blocking net unit includes a rectangular frame 101 and a metal mesh 102 installed on the rectangular frame. The blocking net 10 is composed of a plurality of small-area blocking net units, which can reduce the difficulty of making the blocking net and the maintenance cost. At the same time, there is no need to use large-scale lifting equipment during the installation of the blocking net, which greatly reduces the difficulty of installing the blocking net.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solution from the technical solution of the embodiments of the utility model.

Claims

1. A mechanical ventilation cooling tower, comprising a cooling tower body and a circulating water pool located at the bottom of the cooling tower body, wherein the bottom of the cooling tower body is connected to the circulating water pool, and an air outlet is provided at the top; an exhaust fan is provided at the air outlet, characterized in that: An air inlet is provided on the bottom side of the cooling tower body, and a protective structure is provided on the air inlet, and the protective structure includes a fixing frame and a blocking net installed on the fixing frame; the fixing frame is fixed at the air inlet, and the fixing frame includes an upper support frame and a lower support bar, a connecting rod is provided between the upper support frame and the lower support bar, and a rain shield is provided on the upper end of the upper support frame; the windward surface of the blocking net is arranged obliquely downward between the upper support plate and the lower support bar, and the upper end of the blocking net is detachably connected to the upper support frame by a rotating connecting mechanism, and the lower end is fixed to the lower support bar by a locking mechanism.

2. A mechanical ventilation cooling tower according to claim 1, characterized in that: A triangular support rod is provided between the upper support frame and the lower support bar.

3. A mechanical ventilation cooling tower according to claim 1, characterized in that: The rotating connection mechanism includes a hook fixed on the front end of the upper support frame and a lifting ear fixed on the upper end of the baffle net and equipped with an adapting hook.

4. A mechanical ventilation cooling tower according to claim 1, characterized in that: The cross section of the lower support bar is L-shaped; the locking mechanism includes a latch and a pin seat, the pin seat is fixed to the lower end of the baffle, and the pin seat is provided with a guide hole adapted to the latch, and the lower support bar is provided with a pin hole adapted to the latch.

5. A mechanical ventilation cooling tower according to claim 4, characterized in that: A snap-in groove is provided at the bottom of the latch, a snap-in mechanism is provided on the lower support bar, and the snap-in mechanism includes a shell, a snap-in block and a reset spring; an open movable cavity is provided in the middle of the shell, a through hole for fitting the pin shaft is provided at the bottom of the movable cavity, and an operating hole is provided on the outer wall; a snap-in hole for fitting the snap-in groove is provided on the snap-in block, and the snap-in block is slidably connected in the movable cavity in the middle of the shell; the reset spring is fixed between the inner wall of the movable cavity and the snap-in block, and is used to provide a reset elastic force for the snap-in block.

6. A mechanical ventilation cooling tower according to claim 5, characterized in that: The inner side wall of the movable cavity is provided with a limiting block for limiting the movable distance of the clamping block.

7. A mechanical ventilation cooling tower according to claim 1, characterized in that: The exhaust fan is a variable frequency fan.

8. A mechanical ventilation cooling tower according to claim 1, characterized in that: The blocking net is composed of a plurality of blocking net units, and the blocking net units include a rectangular frame and a metal net installed on the rectangular frame.

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