Cooling tower blowdown device

Abstract

The utility model relates to the technical field of cooling tower blowdown device, concretely is cooling tower blowdown device, including collection box, box, support seat, apron and sealing mechanism, support seat one end with box connection, support seat other end with collection box bottom wall connection, support seat is equipped with several, apron is connected with box through first bolt, apron top one side is equipped with liquid inlet subassembly, apron other side is equipped with feed assembly, apron top center is equipped with stirring assembly, collection box front is equipped with liquid outlet subassembly, the sealing mechanism includes telescopic pneumatic cylinder, connecting block, connecting plate, cylinder, sealing layer and second bolt, telescopic pneumatic cylinder sets up in the box side, telescopic pneumatic cylinder output end with connecting block connection, connecting block is connected with connecting plate through second bolt, the utility model discloses cooling tower blowdown device, has solved the problem that the current equipment is inconvenient to filter.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling tower sewage discharge devices, specifically cooling tower sewage discharge devices. Background Technology

[0002] As is well known, a cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and release it into the atmosphere to lower the water temperature. Its cooling mechanism utilizes the heat exchange between water and air to generate steam. The steam evaporates, carrying away heat through evaporative heat dissipation, convective heat transfer, and radiative heat transfer. This process dissipates waste heat generated in industrial processes or refrigeration and air conditioning systems, thus lowering the water temperature and ensuring the normal operation of the system. The device is generally cylindrical, hence the name cooling tower. The cooling tower blowdown system is an indispensable part of the cooling tower system. It is mainly used to remove wastewater, sludge, moss, and corrosion products from the cooling tower.

[0003] However, existing cooling tower sewage discharge devices generally lack efficient filtration mechanisms, making it difficult to remove small particles of impurities from wastewater. Direct discharge of such unfiltered wastewater not only easily leads to increased water turbidity but also exacerbates the risk of blockage in municipal pipe networks (the probability of blockage increases by 40% for pipes with a diameter of 100mm). Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, this utility model provides a cooling tower sewage discharge device.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a cooling tower sewage discharge device, comprising a collection box, a box body, a support base, a cover plate, and a sealing mechanism. One end of the support base is connected to the box body, and the other end of the support base is connected to the bottom wall of the collection box. Several support bases are provided. The cover plate is connected to the box body by a first bolt. A liquid inlet assembly is provided on one side of the top of the cover plate, and a feeding assembly is provided on the other side of the cover plate. A stirring assembly is provided at the center of the top of the cover plate. A liquid outlet assembly is provided on the front of the collection box. The sealing mechanism includes a telescopic cylinder, a connecting block, a connecting plate, a cylinder, a sealing layer, and a second bolt. The telescopic cylinder is located on the side of the box body, and its output end is connected to the connecting block. The connecting block is connected to the connecting plate by the second bolt. One end of the cylinder is connected to the connecting plate. Several filter holes are opened at the bottom of the box body, and several cylinders are provided, with several cylinders passing through the filter holes. A sealing layer is provided on the outer wall of the cylinder.

[0008] To facilitate the passage of the cylinder through the filter holes, this invention features an improvement where the top of the cylinder is chamfered, and the sealing layer matches the outer contour of the cylinder.

[0009] To facilitate observation of the interior of the enclosure, this utility model is improved by providing an observation window on the front of the enclosure, which is embedded in the front of the enclosure.

[0010] To improve the connection effect, the present invention is improved by having a plurality of first bolts arranged symmetrically, and a plurality of second bolts arranged symmetrically.

[0011] To improve the sealing effect between the cover plate and the box, the present invention is improved by providing a sealing ring at the bottom of the cover plate, and the sealing ring is fixedly connected to the bottom of the cover plate.

[0012] To improve stability, this utility model is improved by having several of the aforementioned support seats arranged symmetrically.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides a cooling tower sewage discharge device, which has the following beneficial effects:

[0015] This cooling tower wastewater discharge device significantly improves wastewater treatment efficiency and reliability through adjustable filter components and integrated design. A telescopic cylinder drives the cylinder's lifting and lowering, working in conjunction with bottom filter holes for automatic filtration. A 45° chamfered cylinder reduces friction, and a silicone rubber sealing layer ensures leak-free operation. The filtration efficiency reaches over 90%, intercepting particles ≥4mm. Symmetrically arranged support seats and bolted connections allow the equipment to bear a load of 2.5t with an inclination of ≤0.5mm / m, ensuring excellent operational stability. An observation window facilitates real-time monitoring of the internal status. The cover sealing ring has a compression capacity of 20%-25%, providing good leak-proof performance. The stirring component promotes thorough mixing of flocculant and wastewater, agglomerating tiny particles into large flocs, enhancing filtration efficiency. Compared to traditional devices, the concentration of suspended solids in the wastewater is reduced by 30%-40%, effectively reducing environmental pollution and the risk of pipe blockage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the axonal structure of the present invention;

[0019] Figure 4 This utility model Figure 1 Schematic diagram of the structure of the central cylinder;

[0020] In the diagram: 1. Collection box; 2. Liquid discharge assembly; 3. Box body; 4. Support base; 5. Liquid inlet assembly; 6. Feeding assembly; 7. Stirring assembly; 8. Cover plate; 9. First bolt; 10. Sealing mechanism; 11. Telescopic cylinder; 12. Connecting block; 13. Connecting plate; 14. Cylinder; 15. Sealing layer; 16. Second bolt; 17. Observation window. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 A cooling tower wastewater discharge device includes a collection box 1, a box body 3, a support base 4, a cover plate 8, and a sealing mechanism 10. One end of the support base 4 is connected to the box body 3, and the other end of the support base 4 is connected to the bottom wall of the collection box 1. Several support bases 4 are provided. The cover plate 8 is connected to the box body 3 by a first bolt 9. A liquid inlet assembly 5 is provided on one side of the top of the cover plate 8, and a feeding assembly 6 is provided on the other side. A stirring assembly 7 is provided at the center of the top of the cover plate 8. A liquid outlet assembly 2 is provided on the front of the collection box 1. The sealing mechanism 10 includes a telescopic... The box 3 includes a cylinder 11, a connecting block 12, a connecting plate 13, a cylinder 14, a sealing layer 15, and a second bolt 16. The telescopic cylinder 11 is located on the side of the box 3. The output end of the telescopic cylinder 11 is connected to the connecting block 12. The connecting block 12 is connected to the connecting plate 13 via the second bolt 16. One end of the cylinder 14 is connected to the connecting plate 13. The bottom of the box 3 has several filter holes. Several cylinders 14 are provided, and several cylinders 14 pass through the filter holes. The outer wall of the cylinder 14 is provided with a sealing layer 15.

[0023] Working principle: During equipment installation, fix it in the designated position. The collection box 1 forms a stable support for the upper box 3 through symmetrically arranged support seats 4 (material Q235B, cross-sectional size 50mm×50mm). After connecting the three-phase mains power, seal the liquid inlet assembly 5 (DN80 flange interface) to the cooling tower sewage pipe, and at the same time connect the feed assembly 6 (DN50 quick-connect interface) to the flocculant storage tank. When the cooling tower sewage valve is opened, the wastewater flows into the box 3 through the liquid inlet assembly 5. At this time, commercially available polyacrylamide (PAM) flocculant is added through the feed assembly 6 (dosage concentration 1-3ppm, specific ratio adjusted according to water turbidity).

[0024] Start the stirring assembly 7 (motor power 2.2kW, speed 60-80r / min), which consists of a three-phase asynchronous motor, flexible coupling, stainless steel connecting shaft and 4-blade propeller. Stir continuously for 30 minutes at 60-80r / min to make the wastewater and flocculant mix uniformly ≥95%, and promote the aggregation of ≤4mm small impurity particles in the wastewater into flocs ≥4mm. During the stirring process, the cylinder 14 (material 304 stainless steel, diameter 4mm) penetrates the bottom filter hole (hole diameter 4mm) of the box body 3 to achieve sealing. Its outer wall silicone rubber sealing layer (Shore hardness 50±5HA) ensures sealing performance with a compression of 1.5mm to prevent wastewater leakage.

[0025] After stirring, the telescopic cylinder 11 (50mm diameter, 100mm stroke, 0.4-0.6MPa working pressure) is activated, driving the connecting plate 13 downwards by 50mm via the connecting block 12, separating the cylinder 14 from the filter holes. At this time, the flocculated wastewater flows into the collection tank 1 through the filter holes. Impurities with a diameter > 4mm are intercepted in the tank 3. To avoid wastewater residue, the surface of the connecting plate 13 is coated with a superhydrophobic nano-coating (contact angle ≥ 150°) to ensure that the wastewater slides down quickly at an angle ≥ 30°. The filtered wastewater is then transported to the designated treatment tank or reuse system through the discharge assembly 2 (DN65 electric ball valve). The discharge flow rate can be measured by an electromagnetic flow meter (range 0-50m). 3 / h) Real-time monitoring;

[0026] After discharge, use the matching 17mm open-end wrench to loosen the four symmetrically arranged M10 first bolts 9, remove the cover plate 8 (bottom O-ring seal with a cross-sectional diameter of 8mm), and then clean the inner wall of the tank 3, the filter holes, and the cover plate 8. The sediment at the bottom of the collection tank 1 can be pumped to the sludge thickening tank by an external sludge pump (head 15m). It is recommended to clean it once a week. The connecting block 12 and the connecting plate 13 are fixed by two M8 second bolts 16 (tightening torque 8-10N·m) to ensure the reliability of the connection between the two during expansion and contraction.

[0027] To facilitate the smooth passage of the cylinder 14 through the filter holes, the top of the cylinder 14 in this embodiment is chamfered at 45° (4mm chamfer width). This design reduces frictional resistance during insertion (friction coefficient reduced by 30%) and prevents wear at the filter hole edges due to stress concentration. The sealing layer 15 is made of silicone rubber (Shore hardness 50±5HA) that precisely matches the shape of the cylinder 14. Its cross-section is U-shaped (groove depth 3mm, width 5mm), embedded in the annular groove on the outer wall of the cylinder 14. Through interference fit, it achieves a tight fit with the inner wall of the filter holes. The sealing compression is controlled at 1.2-1.5mm to ensure that the leakage of the cylinder 14 in the blocked state is ≤50mL / h.

[0028] To facilitate real-time observation of the wastewater treatment status inside the tank 3, this embodiment features an observation window 17 embedded in the front of the tank 3. This window is made of 5mm thick tempered glass (light transmittance ≥92%), and is sealed to a 3mm thick stainless steel window frame welded to the tank 3 using silicone structural adhesive (tensile strength ≥1.5MPa after curing). An annular water-guiding groove (5mm deep) is provided inside the window frame to prevent condensation leakage. The glass surface is coated with a scratch-resistant and wear-resistant coating (hardness ≥6H) to withstand splashing impacts that may occur during wastewater treatment.

[0029] To improve the reliability of the connection structure, both the first bolt 9 and the second bolt 16 in this embodiment are symmetrically arranged. The first bolt 9 consists of four M10×30 304 stainless steel bolts, evenly distributed along the circumference of the flange connecting the cover plate 8 and the housing 3 (bolt hole spacing 150mm). They are tightened diagonally using a torque wrench (tightening torque 12-15 N·m) to ensure uniform distribution of sealing pressure between the cover plate 8 and the housing 3, with a sealing surface gap ≤0.1mm. The second bolt 16 consists of two M8×20 high-strength bolts, symmetrically installed at the connection between the connecting block 12 and the connecting plate 13 (bolt hole center distance 80mm). With the aid of spring washers to prevent loosening, the driving force of the telescopic cylinder 11 is evenly transmitted to the connecting plate 13, ensuring that the synchronous error on both sides during the lifting and lowering of the cylinder 14 is ≤0.5mm.

[0030] To improve the sealing performance between the cover plate 8 and the housing 3, a sealing ring is fixedly embedded at the bottom of the cover plate 8 in this embodiment. This sealing ring is made of ethylene propylene diene monomer (EPDM) rubber with a Shore hardness of 60±5HA and a rectangular cross-section (10mm×8mm). It is fixedly connected to an annular groove (9mm deep, 8.5mm wide) at the bottom of the cover plate 8 using high-temperature resistant adhesive (bonding strength ≥2.5MPa). The sealing ring is continuously arranged along the edge of the cover plate 8. When the cover plate 8 is tightened to the housing 3 by the first bolt 9 (tightening torque 12-15N·m), the compression reaches 20%-25%, forming a tight seal. This effectively prevents leakage of wastewater vapor inside the housing 3, and the sealing performance meets the requirement of leakage ≤10mL / h under 0.1MPa pressure.

[0031] To improve the overall stability of the equipment, the support base 4 in this embodiment adopts a symmetrical arrangement design. Specifically, the support base 4 is made of four Q235B carbon structural steel profiles (cross-sectional dimensions 50mm×50mm×5mm), which are arranged in a rectangle between the top wall of the collection box 1 and the bottom wall of the box 3 with the geometric center of the box 3 as the symmetrical point. Each support base 4 is fixedly connected to the collection box 1 and the box 3 at both ends by M12 expansion bolts (bolt embedment depth ≥100mm) to form a stable quadrilateral support structure. According to mechanical calculations, it can withstand the vertical load of the box 3 when it is fully loaded (total weight of wastewater + impurities is about 2.5t), and the overall tilt is ≤0.5mm / m. This symmetrical arrangement can evenly distribute the load and avoid structural deformation caused by uneven local stress, ensuring that the equipment remains stable during long-term operation.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling tower sewage discharge device, comprising a collection box (1), a box body (3), a support base (4), a cover plate (8), and a sealing mechanism (10), characterized in that: One end of the support base (4) is connected to the box body (3), and the other end of the support base (4) is connected to the bottom wall of the collection box (1). There are several support bases (4). The cover plate (8) is connected to the box body (3) by the first bolt (9). The top side of the cover plate (8) is provided with a liquid inlet assembly (5), and the other side of the cover plate (8) is provided with a feeding assembly (6). The top center of the cover plate (8) is provided with a stirring assembly (7). The front of the collection box (1) is provided with a liquid outlet assembly (2). The sealing mechanism (10) includes a telescopic cylinder (11), a connecting block (12), and a connecting plate (13). The box body (3) is provided with a cylinder (14), a sealing layer (15), and a second bolt (16). The telescopic cylinder (11) is located on the side of the box body (3). The output end of the telescopic cylinder (11) is connected to the connecting block (12). The connecting block (12) is connected to the connecting plate (13) through the second bolt (16). One end of the cylinder (14) is connected to the connecting plate (13). The bottom of the box body (3) is provided with a number of filter holes. The cylinder (14) is provided with a number of filter holes. The cylinder (14) passes through the filter holes. The outer wall of the cylinder (14) is provided with a sealing layer (15).

2. The cooling tower sewage discharge device according to claim 1, characterized in that: The top of the cylinder (14) is chamfered, and the sealing layer (15) matches the outer contour of the cylinder (14).

3. The cooling tower sewage discharge device according to claim 2, characterized in that: The front of the box (3) is provided with an observation window (17), which is embedded in the front of the box (3).

4. The cooling tower sewage discharge device according to claim 3, characterized in that: The first bolt (9) is provided in several symmetrical arrangements, and the second bolt (16) is provided in several symmetrical arrangements.

5. The cooling tower sewage discharge device according to claim 4, characterized in that: The bottom of the cover plate (8) is provided with a sealing ring, which is fixedly connected to the bottom of the cover plate (8).

6. The cooling tower sewage discharge device according to claim 5, characterized in that: Several of the aforementioned support bases (4) are symmetrically arranged.

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