A V-type filter tank equipment installation process

Abstract

The present application belongs to the technical field of water filtering in water plant, and discloses a V-shaped filter equipment installation process, which comprises the following steps: preparing a first filter plate and a second filter plate with L-shaped steps at the edges; arranging a strip-shaped groove with a number of 2 at the horizontal position of the L-shaped step of the second filter plate; arranging a sealing rubber gasket in the strip-shaped groove; embedding and connecting the L-shaped steps of the first filter plate and the second filter plate by bolts, and then installing the first filter plate and the second filter plate on a filter plate mounting bracket to complete the installation of the filter plate; embedding a long-handle filter head with a narrow gap in a sleeve in the first filter plate and the second filter plate; installing a pipeline between the pipe gallery, a backwashing pipeline valve, and an inlet and outlet water channel gate device; installing a backwashing Roots blower, an air compressor, and a backwashing water pump in the pipe gallery; conducting a pool body gas distribution and water distribution uniformity test; and laying filter material. The present application can solve the problem of rough filter equipment installation, which is prone to frequent maintenance in the later period.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water filtering in water plants, and particularly relates to a V-shaped filter equipment installation process. BACKGROUND

[0002] The V-shaped filter is a water filtering and treating structure in a water plant, and is a rapid filter characterized by homogeneous filter material, constant liquid level control and air-water backwashing, and comprises a filtering system and a backwashing system. The V-shaped filter has the advantages of high automation degree, complete backwashing, long filtering period, good water quality, high water outlet efficiency, water and energy saving, and the like, and is widely applied.

[0003] The V-shaped filter system equipment comprises filter material, filter plates, filter heads, water pumps, fans, gates, valves, system air pipelines, backwashing water pipelines, waste liquid discharge pipelines and the like. At present, when the V-shaped filter equipment is installed, the construction is generally performed by using the experience in the construction field, and the construction quality is uneven. Rough construction can easily lead to air leakage at the filter plate joints due to poor filtering effect and filter plate subsidence after the V-shaped filter is used for a period of time, and then filter maintenance is performed, which increases the cost burden of the water plant and affects water supply of the water plant. SUMMARY

[0004] In view of the above technical problems, the application provides a V-shaped filter equipment installation process, which aims to improve the sealing performance of the filter plate of the V-shaped filter, improve the reliability and maintainability of the filter equipment installation, greatly increase the service life of the V-shaped filter, and avoid frequent maintenance in the later period. The process comprises the following steps:

[0005] S11: first and second filter plates with L-shaped steps at edges are prepared, the L-shaped steps of the second filter plate have two strip-shaped grooves at a horizontal position, a sealing rubber gasket is arranged in the strip-shaped grooves, the first and second filter plates are connected by embedding the L-shaped steps and then installed on a filter plate installation support, and filter plate installation is completed;

[0006] S12: a long-handle filter head with a narrow gap is installed in a sleeve in the first and second filter plates;

[0007] S13: pipe gallery inter-pipe lines, backwashing pipeline valves and inlet and outlet water channel gate equipment are installed;

[0008] S14: a backwashing Roots blower, an air compressor and a backwashing water pump in the pipe gallery are installed;

[0009] S15: a pool body gas and water distribution uniformity test is performed;

[0010] S16: filter material is laid and the filter material is backwashed for multiple times to ensure that the filter material height and thickness meet the threshold value 1 tolerance requirement.

[0011] Further, the step S11 is specifically as follows:

[0012] S111: prepare the first filter plate and the second filter plate with L-shaped steps at the edges, embed nuts in the groove on the L-shaped step of the second filter plate, and install the first filter plate and the second filter plate on the filter plate mounting bracket through bolted connection;

[0013] S112: set the pool wall concave groove, embed nuts in the bottom of the concave groove, and embed the L-shaped step of the second filter plate in the bottom of the concave groove through reverse connection, and then fix the L-shaped step of the second filter plate on the bottom of the concave groove through bolts;

[0014] S113: fill the poly-sulfur sealant in the joint between the filter plates and the joint between the filter plates and the pool wall, and complete the installation of the filter plates.

[0015] Further, the step S11 can also be as follows: set the pool wall concave groove and the pool bottom mounting bracket, embed nuts for fixing the filter plates on the horizontal surface of the pool wall concave groove and the pool bottom mounting bracket, set the strip-shaped groove on the two sides of the nuts and the horizontal surface of the pool wall concave groove and the pool bottom mounting bracket, and arrange the sealing gasket in the strip-shaped groove; set the third filter plate with L-shaped steps on the four sides, install the third filter plate on the pool wall concave groove or the filter plate mounting bracket through bolted connection, and complete the installation of the filter plates.

[0016] Further, the first filter plate, the second filter plate, or the third filter plate is a C30 reinforced concrete product poured by a horizontal horizontal steel mold.

[0017] Further, the actuator of the backwashing pipe valve and the water inlet and outlet channel gate device is pneumatic, and the control unit of the backwashing pipe valve and the water inlet and outlet channel gate device is installed on the V-shaped filter pool top walkway plate.

[0018] Further, the installation of the backwashing Roots blower includes the installation of the following matching accessories: an import sound-absorbing filter, an export sound-absorbing device, a check valve, a flexible joint made of rubber and steel framework, a shock absorber, a soundproof cover, an automatic emptying valve, and a pressure reducing valve.

[0019] Further, the step S15 specifically includes:

[0020] S151: install blind plugs and gaskets on the filter plates, and leave 5 to 8 holes without installation;

[0021] S152: fill water in the filter pool, stop filling water when the water submerges the filter plates by 10 cm, and install the remaining blind plugs;

[0022] S153: Start a backwash Roots blower at low frequency, open the exhaust valve, gradually increase the frequency, and observe the operating pressure and flow of the backwash Roots blower to prevent the backwash Roots blower from being over-pressurized;

[0023] S154: Observe whether bubbles exist in the gap between the filter plates and the gap between the filter plates and the pool wall.

[0024] S155: If the gap between the filter plates and the gap between the filter plates and the pool wall are not leaking, turn off the backwash Roots blower.

[0025] S156: Remove the blind plug and install the filter head.

[0026] S157: Start a backwash Roots blower at low frequency, observe the air distribution, and finally start two backwash Roots blowers at low frequency to observe the air distribution.

[0027] Further, the step S16 further comprises: after the lower filter material is washed, the upper filter material is laid and washed, and the washing intensity is gradually reduced.

[0028] Further, the step S12 further comprises: before the filter head is installed, the error in the height direction of the sleeve is ensured to be less than 1mm.

[0029] Further, the step S111 further comprises: the first filter plate and the second filter plate meet the following size standards: flat size tolerance ±1mm, flatness tolerance ±1mm, thickness tolerance ±1mm, four verticality tolerance <3mm, filter head hole center deviation ±1mm, and diagonal length tolerance ±2.0mm.

[0030] The step S112 further comprises: checking whether the flatness tolerance of the filter plate of the filter tank is ≤2mm, and if not, adjusting and reworking.

[0031] Compared with the prior art, the beneficial effects of the present application are at least as follows:

[0032] (1) The sealing reliability and sealing life of the filter plate installation can be improved. Compared with the traditional filter plate installation which uses sealing rubber strips to seal the gaps between the filter plates and the gaps between the filter plates and the wall, the first filter plate and the second filter plate with L-shaped steps are used in the present application, the L-shaped step of the second filter plate has a number of 2 strip-shaped grooves with sealing rubber pads, after the L-shaped steps of the first filter plate and the second filter plate are embedded and connected, the sealing rubber pads are compacted by bolts, and the sealing between the filter plates and the gaps between the filter plates is realized; by setting the pool wall concave groove, the bottom of the concave groove is embedded with nuts, the L-shaped step of the second filter plate is embedded and connected at the bottom of the concave groove, the L-shaped step of the second filter plate is fixed at the bottom of the concave groove by bolts, and the sealing rubber pads are compacted, and the sealing between the filter plates and the pool wall is realized. The sealing material of this scheme is not on the surface of the filter tank bottom, and will not be affected by external scouring, oxidation corrosion, etc., and the installation of the embedded L-shaped step of the filter plate avoids the sealing failure of the filter plate gap caused by the long-term use of the traditional filter plate settlement, greatly improving the sealing reliability and sealing life of the filter plate installation.

[0033] (2) The environmental protection of the filter tank is improved. The filter tank equipment installation process provided by the present application uses non-toxic materials, compared with the traditional filter plate installation which uses asphalt to seal the filter plate gap, the non-toxic food-grade polysulfide sealing paste is used to fill the joints between the filter plates and the joints between the filter plates and the pool wall, which is more environmentally friendly and beneficial to water quality safety.

[0034] (3) The safety and maintenance convenience of the control unit of the backwashing pipe valve and the inlet and outlet water channel gate equipment are improved. The control unit of the backwashing pipe valve and the inlet and outlet water channel gate equipment is installed on the V-shaped filter tank top walkway plate, which can avoid the installation of the actuator of the backwashing pipe valve and the inlet and outlet water channel gate equipment in the water channel in the traditional design, and the matching actuator unit is installed near the water channel. Abnormal backwashing or a large amount of water vapor in backwashing can easily cause short circuit or insulation abnormality of the control unit. Installing the control unit of the backwashing pipe valve and the inlet and outlet water channel gate equipment on the V-shaped filter tank top walkway plate can improve the safety and maintenance convenience of the control unit of the backwashing pipe valve and the inlet and outlet water channel gate equipment.

[0035] (4) The pool body gas and water distribution uniformity test is more reliable. The traditional pool body gas and water distribution uniformity test installs a filter head, then injects water into the filter tank, opens the air inlet valve to observe whether the gas distribution on the surface of the filter tank is uniform, and checks the tightness of the filter plate and the joint at the same time. If strong foam appears near a filter head, it is determined that the filter head or the filter plate gap leaks. The pool body gas and water distribution uniformity test provided by the present application installs a blind plug for the filter plate, verifies whether there is bubbling in the gaps between the filter plates and the gaps between the filter plates and the pool wall, then installs a filter head, and opens the air blower to verify the gas distribution uniformity. The pool body gas and water distribution uniformity test provided by the present application is more reliable. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0037] Figure 1 The flow chart of the first embodiment of the V-type filter tank equipment installation process provided by the present application;

[0038] Figure 2 The flow chart of the second embodiment of the V-type filter tank equipment installation process provided by the present application;

[0039] Figure 3 The flow chart of the third embodiment of the V-type filter tank equipment installation process provided by the present application;

[0040] Figure 4 The flow chart of the pool body gas and water distribution uniformity test of the V-type filter tank equipment installation process provided by the present application;

[0041] Figure 5 The structural schematic diagram of the first filter plate and the second filter plate installation provided by the present application;

[0042] Figure 6 The cross-sectional schematic diagram of the first filter plate and the second filter plate installation A provided by the present application;

[0043] Figure 7 The cross-sectional schematic diagram of the second filter plate and the pool wall concave groove installation provided by the present application;

[0044] Figure 8 The filter plate installation frame schematic diagram of the third embodiment provided by the present application;

[0045] Figure 9 The third filter plate structural schematic diagram of the third embodiment provided by the present application.

[0046] In the drawings, the component list represented by each sign is as follows:

[0047] 1-first filter plate, 2-second filter plate, 3-sleeve, 4-bolt, 5-sealing rubber gasket, 6-nut, 7-pool wall, 8-third filter plate, 9-bolt mounting hole. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings and examples. Obviously, the specific examples described here are only used to explain the present application and are a part of the examples of the present application, but not all the examples. Based on the examples in the present application, all the other examples obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0049] It should be noted that if the present application examples involve "first", "second", "third" and the like, the "first", "second", "third" and the like are only for description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that the technical solutions can be realized by those skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0050] First embodiment

[0051] Figure 1 The flow chart of the first embodiment of the V-type filter tank equipment installation process provided by the present application is shown, which specifically includes:

[0052] S11: Prepare a first filter plate 1 and a second filter plate 2 with an L-shaped step at the edge, the L-shaped step of the second filter plate 2 has two strip-shaped grooves at the horizontal position, arrange a sealing rubber gasket 5 in the strip-shaped groove, and install the first filter plate 1 and the L-shaped step of the second filter plate 2 on the filter plate mounting bracket through bolt 4 embedding connection, and complete the filter plate installation. Specifically, the sealing rubber gasket 5 is installed in the strip-shaped groove and overflows by half the height, and after the first filter plate 1 and the L-shaped step of the second filter plate 2 are embedded and connected through the bolt 4, the sealing rubber gasket 5 is compressed by about 50% due to the pressure between the first filter plate 1 and the second filter plate 2 and the fastening force of the bolt 4, so as to realize the sealing between the filter plate and the filter plate joint. In addition, because the installation method of embedding the L-shaped step of the filter plate avoids the situation that the filter plate joint sealing fails due to the settlement of the filter plate after long-term use of the traditional filter plate, the sealing reliability of the filter plate installation and the filter plate sealing life can be greatly improved.

[0053] S12: Install a long-handle filter head with a narrow gap in the sleeve 3 embedded in the first filter plate 1 and the second filter plate 2. Specifically, before installing the filter head, the bottom of the filter plate needs to be cleaned once to ensure that the installation environment is clean and hygienic, so as to avoid dirt between the long-handle filter head and the sleeve 3 and affect the sealing of the filter head installation.

[0054] S13: Install valves for pipe racks, backwash pipes, and inlet / outlet water channel gates.

[0055] S14: Install a backwashing Roots blower, air compressor, and backwashing water pump in the pipe gallery.

[0056] S15: Conduct a test on the uniformity of air and water distribution in the pool. Specifically, such as... Figure 4 The flowchart shown is for the uniformity test of air and water distribution in the filter tank during the installation process. Step S15 specifically includes: S151: Install blind plugs and gaskets on the filter plates, leaving 5-8 holes uninstalled; S152: Fill the filter tank with water, and stop filling when the water submerges the filter plates by 10cm, then install the remaining blind plugs; S153: Start one backwashing Roots blower at a low frequency, while simultaneously opening the exhaust valve, gradually increasing the frequency, and observing the operating pressure and flow rate of the backwashing Roots blower to prevent excessive pressure buildup; S154: Observe whether there are bubbles in the gaps between the filter plates and the gaps between the filter plates and the tank wall 7; S155: If there is no air leakage in the gaps between the filter plates and the gaps between the filter plates and the tank wall 7, turn off the backwashing Roots blower; S156: Remove the blind plugs and install the filter heads; S157: Start one backwashing Roots blower at a low frequency and observe the air distribution, and finally start two backwashing Roots blowers at a low frequency and observe the air distribution. This not only allows you to check for air leaks between the filter plates, but also to inspect the air and water distribution of the filter head.

[0057] S16: Filter media laying. The filter media should be rinsed multiple times to ensure that the elevation and thickness meet the tolerance requirements of threshold 1. Specifically, during filter media laying, it is crucial to strictly prevent damage to the installed long-handled filter heads due to impact from material feeding or human trampling. Before laying the upper layer of filter media, the lower layer should be rinsed promptly to avoid mixing. Then, the rinsing intensity should be gradually reduced to achieve effective hydraulic stratification. Multiple rinsing of the filter media effectively ensures a dense laying. The elevation and thickness of the laid filter media should meet the tolerance requirements of threshold 1, preferably 1.2m, with a tolerance of ±0.05m.

[0058] Second Embodiment

[0059] Figure 2 The diagram shows a flowchart of a second embodiment of the installation process for the V-type filter equipment provided by the present invention. The flowchart specifically includes:

[0060] S111: Prepare the first filter plate 1 and the second filter plate 2 with L-shaped steps on the edges, and the L-shaped steps of the second filter plate 2 have two strip-shaped grooves horizontally arranged. The sealing gasket 5 is arranged in the strip-shaped groove, and the first filter plate 1 and the second filter plate 2 are embedded and connected through the L-shaped steps and then installed on the filter plate mounting bracket through the bolt 4. Specifically, the sealing gasket 5 is installed in the strip-shaped groove and overflowed by half the height. After the first filter plate 1 and the second filter plate 2 are embedded and connected through the L-shaped steps, the sealing gasket 5 is compressed by about 50% due to the pressure between the first filter plate 1 and the second filter plate 2 and the fastening force of the bolt 4, thereby achieving the sealing between the filter plate and the filter plate joint. In addition, the installation mode of embedding the L-shaped steps of the filter plate avoids the situation that the filter plate joint sealing fails due to the settlement of the filter plate after long-term use of the traditional filter plate, and can greatly improve the sealing reliability of the filter plate installation and the filter plate sealing life.

[0061] S112: Set the concave groove of the pool wall 7, embed the L-shaped step of the second filter plate 2 in the bottom of the concave groove, and fix the L-shaped step of the second filter plate 2 in the bottom of the concave groove through the bolt 4. That is, the L-shaped step of the second filter plate 2 is fixed in the bottom of the concave groove through the bolt 4. The sealing gasket 5 is compressed by about 50% due to the pressure of the second filter plate 2 and the fastening force of the bolt 4, thereby achieving the sealing between the filter plate and the pool wall 7 joint.

[0062] S113: Fill the polysulfide sealant in the joint between the filter plates and the joint between the filter plate and the pool wall 7. Specifically, the selected polysulfide sealant is a non-toxic food-grade standard to ensure the safety of water quality.

[0063] S12: Before installing the filter head, ensure that the error of the height direction of the sleeve 3 is less than 1 mm, and install the long-handle filter head with a narrow joint in the sleeve 3 in the first filter plate 1 and the second filter plate 2. Specifically, before installing the filter head, the bottom of the filter plate needs to be cleaned once to ensure that the installation environment is clean and hygienic, and to avoid dirt between the long-handle filter head and the sleeve 3, which affects the sealing of the filter head installation. The error of the height direction of the sleeve 3 is less than 1 mm, which can ensure the flatness of the long-handle filter head installation and is more conducive to producing better filtering effect.

[0064] S13: Install the pipe line between pipe corridors, backwash pipe valve and water inlet and outlet channel gate equipment. Specifically, the actuator of the backwash pipe valve and water inlet and outlet channel gate equipment is pneumatic, and the control unit of the backwash pipe valve and water inlet and outlet channel gate equipment is installed on the V-type filter pool top walkway plate. In this way, compared with the electric type, the backwash pipe valve and water inlet and outlet channel gate equipment with pneumatic type has higher reliability due to the high humidity of the filter pool environment. In addition, the control unit of the backwash pipe valve and water inlet and outlet channel gate equipment is installed on the V-type filter pool top walkway plate, which improves the safety and maintenance convenience of the control unit of the backwash pipe valve and water inlet and outlet channel gate equipment.

[0065] S14: Install backwash Roots blower, air compressor and backwash water pump in the pipe corridor. Specifically, the installation of backwash Roots blower includes the following supporting accessories: import sound filter, export muffler, check valve, flexible joint made of rubber steel skeleton, shock absorber, soundproof cover, automatic emptying valve and pressure reducing valve. Among them, the import sound filter is mainly a device for eliminating the noise of air flow at the inlet of the blower. The sound absorber is light in weight, small in resistance and good in sound absorption effect, and can prevent dust and particles from entering the pipe network, purify the air in the pipe network, and there are small holes between the filter material in the import filter shell and the import air, which can offset the pressure pulse and protect the import filter material; the export sound absorber is installed directly below the main machine, mainly to eliminate the pressure pulsation and airflow noise at the outlet of the blower, and has a wide sound absorption frequency band and good sound absorption effect; the check valve is used to prevent the reverse rotation of the blower rotor caused by the backflow of high-pressure gas in the system during shutdown, and to prevent the backflow of dust in the system; the flexible joint made of rubber steel skeleton has good shock absorption and sound insulation effect; the shock absorber is selected according to the calculation that the bearing disturbance frequency is greater than the natural vibration frequency, and has good shock absorption effect; the soundproof cover is made of steel plate, the inner wall of the soundproof cover is lined with sound-absorbing material, the soundproof cover is easy to disassemble, has good sound insulation effect, and has a cooling fan inside; the automatic emptying valve and pressure reducing valve are suitable for automatic pressure balance when the blower is running, and automatically reduce the starting load when the blower is started, replacing the function of the bypass emptying valve, and adapting to the intermittent work and frequent start of the water plant backwash. The automatic emptying valve also has the function of safety valve, which will automatically open when the outlet pressure is higher than the set value, protecting the equipment.

[0066] S15: Perform pool body gas distribution and water distribution uniformity test. Specifically, as shown in FIG. 7, the water distribution uniformity test is performed by measuring the water level of the water distribution pipe at different positions of the pool body, and the gas distribution uniformity test is performed by measuring the gas pressure at different positions of the pool body. Figure 4The flowchart shown is for the uniformity test of air and water distribution in the filter tank during the installation process. Step S15 specifically includes: S151: Install blind plugs and gaskets on the filter plates, leaving 5-8 holes uninstalled; S152: Fill the filter tank with water, and stop filling when the water submerges the filter plates by 10cm, then install the remaining blind plugs; S153: Start one backwashing Roots blower at a low frequency, while simultaneously opening the exhaust valve, gradually increasing the frequency, and observing the operating pressure and flow rate of the backwashing Roots blower to prevent excessive pressure buildup; S154: Observe whether there are bubbles in the gaps between the filter plates and the gaps between the filter plates and the tank wall 7; S155: If there is no air leakage in the gaps between the filter plates and the gaps between the filter plates and the tank wall 7, turn off the backwashing Roots blower; S156: Remove the blind plugs and install the filter heads; S157: Start one backwashing Roots blower at a low frequency and observe the air distribution, and finally start two backwashing Roots blowers at a low frequency and observe the air distribution. This not only allows you to check for air leaks between the filter plates, but also to inspect the air and water distribution of the filter head.

[0067] S16: Filter media laying. The filter media should be rinsed multiple times to ensure that the elevation and thickness meet the tolerance requirements of threshold 1. Specifically, during filter media laying, it is crucial to strictly prevent damage to the installed long-handled filter heads due to impact from material feeding or human trampling. Before laying the upper layer of filter media, the lower layer should be rinsed promptly to avoid mixing. Then, the rinsing intensity should be gradually reduced to achieve effective hydraulic stratification. Multiple rinsing of the filter media effectively ensures a dense laying. The elevation and thickness of the laid filter media should meet the tolerance requirements of threshold 1, preferably 1.2m, with a tolerance of ±0.05m.

[0068] Furthermore, step S111 also includes selecting a first filter plate 1 and a second filter plate 2 that meet the following dimensional standards: planar dimension tolerance ±1mm, flatness tolerance ±1mm, thickness tolerance ±1mm, perimeter perpendicularity tolerance <3mm, filter head hole center deviation ±1mm, and diagonal length tolerance ±2.0mm. Selecting filter plates in this way ensures flatness after installation, which is beneficial for improving the filtration effect of the filter bed. Step S112 also includes checking whether the flatness tolerance of the filter plates in the filter bed is ≤2mm. If not, rework and adjustment are performed until the flatness index of the installed filter plates is qualified.

[0069] Furthermore, such as Figure 4 The schematic diagram of the installation of the first filter plate 1 and the second filter plate 2 shown below is as follows: Figure 5 The diagram shows a cross-sectional view along direction A of the installation of the first filter plate 1 and the second filter plate 2. The second filter plate 2 has two strip-shaped grooves at the horizontal position of its L-shaped step. These two grooves are respectively arranged on both sides of the bolt 4 mounting holes on the filter plate. This achieves a double seal between the filter plates and eliminates the impact of gaps caused by the bolts 4 between the two filter plates on the filter plate installation seal.Figure 6 The second filter plate 2 and the cross-sectional view of the groove installation of the pool wall 7 are shown. The pool wall 7 has a groove, and a nut 6 is embedded at the bottom of the groove. The L-shaped step of the second filter plate 2 is reversely inserted and connected to the bottom of the groove, and the second filter plate 2 is fixed to the bottom of the groove by a bolt 4. The number of strip-shaped grooves is two, and the two strip-shaped grooves are arranged on both sides of the bolt 4 installation hole of the filter plate. In this way, double sealing of the filter plate and the pool wall 7 can be realized, and the gap caused by the installation of the bolt 4 when the filter plate is connected to the pool wall 7 can be eliminated.

[0070] Further, the first filter plate 1 and the second filter plate 2 are C30 reinforced concrete products poured by horizontal horizontal rigid mold. In this way, the precision and cost requirements can be better guaranteed, and the specifications of the first filter plate 1 and the second filter plate 2 can be: 1020*1000mm, thickness 100mm, flatness 0.1%; the positive pressure of the filter plate bearing the pre-filtered water and the filter material should be ≥35.20kPa, and the reverse pressure of the backwashing water should be ≥25kPa; the appearance requirements of the first filter plate 1 and the second filter plate 2 are: both sides are flat, the surface should not have bubbles, no honeycomb pitted surface, cracks, no exposed reinforcement, warping, and no damage to the four edges (corners); the sleeve 3 is accurately embedded, without inversion, skew, omission, and no foreign matter in the sleeve 3, ensuring that the filter head is tightened; the water-cement ratio of the filter plate, the fine stone, and the quartz sand grading are strictly implemented according to the relevant standards, and the opening ratio is calculated according to the design requirements.

[0071] Third embodiment

[0072] Figure 3 The flowchart of the third embodiment of the V-shaped filter tank equipment installation process provided by the application is shown, which specifically includes:

[0073] S11: Set the pool wall groove and the pool bottom plate installation support, the pool wall groove and the pool bottom plate installation support are embedded with nuts for fixing the filter plate, the nuts are arranged on both sides of the pool wall groove and the pool bottom plate installation support, and the strip-shaped grooves are arranged on the horizontal plane of the pool wall groove and the pool bottom plate installation support. The sealing rubber is arranged in the strip-shaped groove; the third filter plate with an L-shaped step around is arranged, and the third filter plate is embedded and connected by a bolt and installed on the pool wall groove or the filter plate installation support, and the filter plate installation is completed. Specifically, as Figure 8The filter plate mounting frame schematic diagram shows that the area in the dashed box is the pool wall concave groove area, the area in the solid line box is the pool bottom plate mounting bracket, the pre-buried nuts for fixing the filter plate are uniformly arranged in the above two areas, and the continuous distribution of strip grooves are arranged on the two sides of the nuts in the two areas, the pool wall concave groove and the pool bottom plate mounting bracket horizontal plane, the sealing rubber gasket 5 is arranged in the strip groove, the sealing rubber gasket 5 is installed in the strip groove and overflows by half the height, the L-shaped step around the third filter plate 8 is connected to the pool wall concave groove and the pool bottom plate mounting bracket through the bolt 4, the sealing rubber gasket 5 is compressed by about 50% due to the fastening force of the bolt 4, and the sealing property between the filter plates and the filter plate joints is realized. Figure 9 As shown in the figure, the L-shaped step of the third filter plate 8 is provided with a bolt mounting hole 9, the bolt mounting hole 9 is a through hole, and the bolt 4 can pass through the bolt mounting hole 9. In this way, the sealing property of the filter plate can be ensured while the specification of the filter plate is reduced, and the cost can be saved.

[0074] S12: The long-handle filter head with a narrow gap is pre-buried in the sleeve 3 in the third filter plate 8. Specifically, before the filter head is installed, the bottom of the filter plate needs to be cleaned once to ensure that the installation environment is clean and hygienic, so as to avoid dirt between the long-handle filter head and the sleeve 3 and affect the sealing property of the filter head installation.

[0075] S13: Install the pipe gallery inter-pipe, the backwashing pipeline valve and the water inlet and outlet channel gate equipment.

[0076] S14: Install the backwashing Roots blower, air compressor and backwashing water pump in the pipe gallery.

[0077] S15: Perform the pool body gas and water distribution uniformity test. Specifically, as shown in the figure, Figure 4 The pool body gas and water distribution uniformity test flowchart of the filter tank equipment installation process, step S15 specifically includes: S151: Install blind plugs and gaskets on the filter plate, and do not install 5-8 holes; S152: Filter tank water, stop water when the water submerges the filter plate by 10 cm, install the remaining blind plugs; S153: Start one backwashing Roots blower at a low frequency, open the exhaust valve at the same time, gradually increase the frequency, and observe the operating pressure and flow of the backwashing Roots blower to prevent the backwashing Roots blower from being over-pressurized; S154: Observe whether bubbles are generated in the gaps between the filter plates and the gaps between the filter plates and the pool wall 7; S155: If the gaps between the filter plates and the gaps between the filter plates and the pool wall 7 do not leak air, turn off the backwashing Roots blower; S156: Remove the blind plugs and install the filter head; S157: Start one backwashing Roots blower at a low frequency, and observe the gas distribution; finally, start two backwashing Roots blowers at a low frequency, and observe the gas distribution. In this way, not only can the air leakage between the filter plate gaps be checked, but also the gas and water distribution of the filter head can be tested.

[0078] S16: filter material laying, the filter material is washed for multiple times, and it is ensured that the filter material elevation and thickness meet the tolerance requirement of threshold 1. Specifically, during the filter material laying, the installed long handle filter head should be prevented from being damaged due to the impact of material pouring or human trampling. Before the upper filter material is laid, the lower filter material should be washed in time to prevent mixing. Then the washing strength should be gradually reduced to complete the effective hydraulic layering. The multiple washing of the filter material can effectively ensure the compactness of the filter material laying. The filter material laying elevation and thickness meet the tolerance requirement of threshold 1, and threshold 1 is preferably 1.2 m, and the tolerance is ±0.05 m.

[0079] In the embodiment three, other installation process details can be referred to the embodiment two, and the embodiment will not be described herein.

[0080] The above embodiments only express the preferred implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as the limitation on the patent scope of the present application. It should be pointed out that for the ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. An installation process for a V-type filter bed equipment, characterized in that, Includes the following steps: S11: Prepare a first filter plate and a second filter plate with L-shaped steps on the edges. The second filter plate has two strip grooves at the horizontal position of the L-shaped steps. Place a sealing gasket in the strip grooves. After the L-shaped steps of the first filter plate and the second filter plate are fitted and connected by bolts, they are installed on the filter plate mounting bracket. Set a concave groove in the pool wall. A nut is pre-embedded at the bottom of the concave groove in the pool wall. The L-shaped steps of the second filter plate are upside down and embedded in the bottom of the concave groove in the pool wall. Fix the L-shaped steps of the second filter plate to the bottom of the concave groove in the pool wall by bolts. Fill the joint between the first filter plate and the second filter plate and the joint between the second filter plate and the pool wall with polysulfide sealant to complete the filter plate installation. S12: Install the long-handled filter head with a narrow slit into the sleeve pre-embedded in the first and second filter plates; S13: Install valves and gate equipment for pipe racks, backwash pipes, and inlet and outlet channels; S14: Install backwashing Roots blowers, air compressors, and backwashing water pumps in the pipe gallery; S15: Conduct a test on the uniformity of air and water distribution in the pool, specifically including, S151: Install blind plugs and gaskets on the first and second filter plates, leaving 5 to 8 holes uninstalled; S152: Water is introduced into the filter tank. When the water submerges the first and second filter plates by 10cm, the water intake is stopped, and the remaining blind plugs are installed. S153: Start one backwashing Roots blower at a low frequency, and open the exhaust valve at the same time. Gradually increase the frequency and observe the operating pressure and flow of the backwashing Roots blower to prevent the backwashing Roots blower from being pressurized too much. S154: Observe whether there are bubbles in the gap between the first filter plate and the second filter plate and the gap between the second filter plate and the pool wall; S155: If there is no air leakage in the gap between the first and second filter plates and the gap between the second filter plate and the pool wall, turn off the backwashing Roots blower. S156: Remove the blind plug and install the long-handled filter head; S157: Start one backwashing Roots blower at a low frequency and observe the air distribution. Finally, start two backwashing Roots blowers at a low frequency and observe the air distribution. S16: Filter media laying. The filter media is rinsed multiple times to ensure that the elevation and thickness of the filter media meet the tolerance requirements of threshold 1. Before laying the upper layer of filter media, the lower layer of filter media should be rinsed in time to avoid mixing. Then the rinsing intensity should be gradually reduced to complete effective hydraulic stratification.

2. The installation process of the V-type filter equipment according to claim 1, characterized in that, The first and second filter plates are finished C30 reinforced concrete products cast using horizontal steel molds.

3. The installation process of the V-type filter equipment according to claim 2, characterized in that, The actuators of the backwashing pipeline valves and the inlet and outlet water channel gates are all pneumatic, and the control units of the backwashing pipeline valves and the inlet and outlet water channel gates are all installed on the walkway plate on the top of the V-shaped filter tank.

4. The installation process of the V-type filter equipment according to claim 3, characterized in that, The installation of the backwashing Roots blower includes the installation of the following accessories: inlet silencer filter, outlet silencer, check valve, flexible joint made of rubber and steel frame, shock absorber, soundproof cover, automatic vent valve and pressure reducing valve.

5. The installation process of the V-type filter equipment according to claim 4, characterized in that, Step S12 further includes ensuring that the error in the height direction of the sleeve is less than 1mm before the filter head is installed.

6. The installation process of the V-type filter equipment according to claim 5, characterized in that, Step S11 further includes selecting a first filter plate and a second filter plate that meet the following size standards: plane size tolerance ±1mm, flatness tolerance ±1mm, thickness tolerance ±1mm, perimeter tolerance <3mm, filter head hole center deviation ±1mm, and diagonal length tolerance ±2.0mm. Check if the flatness tolerance of the filter plate in the filter tank is ≤2mm. If it does not meet the requirement, rework and adjust it.

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