Sand filtering sewage treatment device for constructional engineering

Abstract

The invention relates to the technical field of constructional engineering, and particularly discloses a sand filtering sewage treatment device for constructional engineering, which comprises a treatment cylinder, a control button is fixed on the surface of the treatment cylinder, a water outlet pipe is mounted on the surface of the control button, one end of the water outlet pipe extends into the treatment cylinder, and a screw rod is mounted in the treatment cylinder. A filter is fixed to the bottom of the screw rod, a connecting pipe is mounted on the surface of the screw rod, mounting mechanisms are arranged on the surfaces of the water outlet pipe, the pipe body and the water inlet pipe, filtering mechanisms are arranged in the screw rod and the connecting pipe, and a sealing mechanism is arranged on the surface of the connecting pipe. The convenience degree of the sand-filtering sewage treatment device during use is improved, the filtering effect of the sand-filtering sewage treatment device is improved, and the phenomenon of water leakage in the use process of the sand-filtering sewage treatment device is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to a sand filter sewage treatment device for construction engineering. Background Art

[0002] Construction engineering construction refers to the process of gradually building and completing a building from the foundation through organizing and implementing various construction activities in accordance with the architectural design plan, construction drawings and relevant specifications. During the entire construction process, it is necessary to reasonably organize the construction team and strictly implement the relevant construction drawings and specifications to ensure that the construction period, quality and safety meet the design requirements. Construction site sewage treatment refers to the treatment of sewage generated at the construction site to meet the discharge standards or recycling and reuse requirements.

[0003] After searching, the Chinese utility model patent with patent application number CN201922337444.5 discloses an integrated sewage purification device for construction engineering, including a water purification mechanism and a drug spreading mechanism. The water purification mechanism includes a sewage treatment tank and a filter box. The sewage treatment tank is fixedly connected with a filter box, the upper side of the filter box is fixedly connected with a hopper, the outer wall of the filter box is screwed with a control panel, and the other side of the filter box is provided with a drop chute, and the drop chute is sequentially embedded with a primary filter screen, a secondary filter screen and a tertiary filter screen from top to bottom. A water pump is screwed on one side of the sewage treatment tank, and the input end of the water pump is fixedly connected with an inlet pipe, and the end of the inlet pipe away from the water pump is inserted into the sewage treatment tank. Through the setting of the inclined primary filter screen, the secondary filter screen and the tertiary filter screen, the sewage containing impurities can be filtered layer by layer, thereby filtering out solid sand and gravel, and the sand and gravel can fall along the inclined filter screen to the sand and gravel area for storage under the action of gravity and water flow impact.

[0004] Another example is a Chinese invention patent application with patent application number CN202311519692.6, which discloses a sewage treatment equipment for construction engineering, including a separation box and a water inlet pipe, the water inlet pipe is inserted into the top of the separation box, and the separation box is respectively arranged as a slow flow layer and a rapid flow layer from bottom to top; and also includes a separation motor, the separation motor is installed on the lower side of the separation box, and the output shaft of the separation motor is connected to the slow flow stirring shaft. By arranging a slow flow layer and a rapid flow layer in the separation box, the two are stirred by the slow flow stirring shaft and the rapid flow stirring shaft respectively, the flow of sewage in the slow flow layer is slow, the sand and gravel are in the slow flow layer, the flow rate of sewage in the rapid flow layer is fast, the sewage and the light waste such as waste paper in it are in the rapid flow layer, the sand and gravel in the sewage are separated, and the separated sand and gravel do not pass through the filter plate, which can avoid direct contact between the sand and gravel and the outer surface of the filter plate, and the anti-rust coating on the outer surface of the filter plate is preserved more completely and for a longer time, and the service life of the filter plate is longer.

[0005] For another example, a Chinese utility model patent with patent application number CN202322481938.7 discloses a sewage treatment device for construction projects, which relates to the field of sewage treatment devices, including a sewage tank, a pad is fixedly connected to the bottom of the inner cavity of the sewage tank, a drive motor is fixedly connected to the bottom of the left side of the sewage tank, the output end of the drive motor is fixedly connected to a rotating shaft, and a spiral blade is fixedly connected to the surface of the rotating shaft. The inner cavity of the sewage tank is provided with an outer shell, and a ceramic filter is laterally fixedly connected to the top of the inner cavity of the outer shell. When the sewage enters the sewage tank, the sand and gravel in the sewage at this time will precipitate and sink into the inner side of the sewage tank. When draining the sewage, the external pump body and the bent pipe are fed, and the bent pipe discharges the sewage in the sewage tank through the outer shell. At the same time, the ceramic filter and the metal filter in the outer shell will filter the sewage to prevent the sand and gravel from being discharged.

[0006] Another example is a Chinese utility model patent with patent application number CN202220225872.8, which discloses a construction engineering wastewater treatment device, including a body, a sewage collection chamber is provided on the left side of the body, and a No. 1 filter device, a No. 2 filter device, a liquid guide plate, a liquid separation plate, a sand and gravel layer, an activated carbon layer, and a microfiltration membrane layer are provided on the right side of the sewage collection chamber from top to bottom. The wastewater treatment device can achieve multi-stage filtration of construction sewage, improve the effect of sewage treatment, and large solid impurities and small solid impurities in the sewage treatment process can be cleaned and concentrated to avoid clogging of the filter holes and affecting the sewage treatment effect.

[0007] Another example is a Chinese invention patent with patent application number CN202210889950.9, which discloses a construction wastewater treatment device, which belongs to the field of wastewater treatment technology and effectively solves the problem that wastewater in construction is not easy to be effectively treated and recycled. The technical scheme includes a sand and gravel filter box, a filter screen is arranged in the sand and gravel filter box, the filter screen is connected to a tilting component, a discharge port is opened on the outer wall of the sand and gravel filter box corresponding to the tilting side of the filter screen, the discharge port is matched with a gate, the tilting component is connected to a first drive mechanism, the first drive mechanism is connected to the gate, the sand and gravel filter box is provided with a water inlet and a water outlet, the water inlet is connected to a sewage pipe, a water wheel box is arranged below the sand and gravel filter box, a water wheel is arranged in the water wheel box, the water wheel drives the second drive mechanism, the second drive mechanism drives the scraper, the scraper cooperates with the top of the filter screen, and a flocculation sedimentation box is arranged below the water wheel box. The beneficial effect of the construction wastewater treatment device is: it provides a construction wastewater treatment device that can avoid sand and gravel blockage and has economic and environmental advantages.

[0008] Another example is a Chinese invention patent with patent application number CN202310237274.1, which discloses a sewage treatment equipment for construction, which includes a primary filter tank, a secondary filter tank, a tertiary filter tank, a clean water tank and a sludge tank. The primary filter tank is arranged above the secondary filter tank, the tertiary filter tank is arranged on one side of the secondary filter tank and the two are connected by a vertically arranged filter plate, the clean water tank is arranged below the tertiary filter tank and the two are connected by a horizontally arranged filter plate, and the sludge tank is arranged below the secondary filter tank and the two are connected by a sewage pipe. The sewage treatment equipment for construction is cleverly designed, and the sewage is filtered three times. The primary filter tank removes large pieces of sand and impurities in the sewage, and the secondary filter tank uses sedimentation to remove fine sand and impurities in the sewage. Finally, the sewage is finely filtered through the tertiary filter tank to remove fine impurities in the sewage. The filtering effect and efficiency are greatly improved, and the construction sewage can be reused, saving water resources.

[0009] Through research and analysis, it is found that although the above-mentioned sewage treatment device can effectively solve the problems of poor effect of sewage recycling devices on the market, complex structure and inconvenient maintenance, it still has some shortcomings to a certain extent. First, the installation pipes in the existing sewage treatment water device are more cumbersome during installation, which seriously affects the convenience of using the sewage device; secondly, it is difficult for the existing sewage treatment water device to realize the function of re-filtering water during use, thereby reducing the filtering effect of the sewage treatment water device; thirdly, the existing sewage treatment water device is prone to water leakage during use, and the sealing between the connecting pipe and the installation pipe is poor. Summary of the invention

[0010] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a sand filtering sewage treatment device for construction engineering is provided to solve the problems that the installation pipes in the existing sewage treatment devices are cumbersome to install, it is difficult to achieve the function of re-filtering water, and water leakage is prone to occur.

[0011] In order to solve the above technical problems, the technical solution of the present invention is:

[0012] A sand filtering sewage treatment device for construction engineering comprises a treatment cylinder, a control button is fixed on the surface of the treatment cylinder, and a water outlet pipe is installed on the surface of the control button, and one end of the water outlet pipe extends to the interior of the treatment cylinder, a tube body is installed on the surface of the treatment cylinder, and one end of the tube body extends to the interior of the treatment cylinder, a water inlet pipe is installed on the surface of the treatment cylinder, and one end of the water inlet pipe extends to the interior of the treatment cylinder, the surfaces of the water outlet pipe, the tube body and the water inlet pipe are all provided with mounting pipes, a spiral rod is installed inside the treatment cylinder, and a filter is fixed at the bottom of the spiral rod, a connecting pipe is installed on the surface of the spiral rod, the surfaces of the water outlet pipe, the tube body and the water inlet pipe are all provided with mounting mechanisms, the insides of the spiral rod and the connecting pipe are both provided with filtering mechanisms, and the surface of the connecting pipe is provided with a sealing mechanism.

[0013] Preferably, the connecting pipe is connected to the spiral rod, and one end of the connecting pipe extends to the inside of the mounting pipe on the surface of the outlet pipe, a discharge pipe is installed at the bottom of the treatment cylinder, and a valve is mounted on the surface of the discharge pipe, and the input of the valve is electrically connected to the output end of the control button.

[0014] Preferably, the filtering mechanism is composed of a small-pore filter, a screen, a purification layer and a large-pore filter, a large-pore filter is fixed inside the spiral rod, a small-pore filter is installed inside the spiral rod, and the small-pore filter is located above the large-pore filter, a screen is installed inside the spiral rod, and the screen is located above the small-pore filter, and a purification layer is fixed to the inner wall of the connecting tube.

[0015] Preferably, the interior of the installation mechanism respectively includes a clamping plate, a fastening screw, a rotating plate, a mounting block and a mounting groove; the surfaces of the water outlet pipe, the pipe body and the water inlet pipe are all fixed with mounting blocks; the surfaces of the mounting pipes are all provided with mounting grooves, and the mounting grooves and the mounting blocks are snap-fitted with each other.

[0016] Preferably, the surfaces of the water outlet pipe, the pipe body and the water inlet pipe are all rotatably connected to a rotating plate, and the surface of the rotating plate is threadedly connected to a fastening screw, and one end of the fastening screw passes through the rotating plate and extends to the inner side of the rotating plate, and a clamping plate is provided on the surface of the fastening screw, and the clamping plate is tightly fitted to the surface of the mounting tube, and the clamping plate and the fastening screw are rotatably matched with each other.

[0017] Preferably, the interior of the sealing mechanism includes an adhesive layer, a connecting block, a fastening bolt, a sealing ring, a waterproof pad and a sealing pad. The inner wall of the mounting tube is provided with a sealing ring, and the surface of the sealing ring is fixed with a connecting block. The surface of the connecting block is threadedly connected with a fastening bolt, and one end of the fastening bolt passes through the connecting block and is threadedly fastened to the surface of the mounting tube. The inner wall of the sealing ring is fixed with an adhesive layer, and the surface of the adhesive layer is adhered to the waterproof pad, the surface of the waterproof pad is covered with a sealing pad, and the surface of the sealing pad is tightly fitted with the surface of the connecting tube.

[0018] By adopting the above technical scheme, the invention provides a sand filter sewage treatment device for construction engineering, which has the following beneficial effects: the sand filter sewage treatment device not only improves the convenience during use and improves the filtering effect, but also avoids water leakage during use:

[0019] 1. By providing an installation mechanism, the installation pipes are placed on the surfaces of the pipe body, the water inlet pipe and the water outlet pipe respectively. At this time, the installation block is clamped into the inside of the installation groove on the surface of the installation pipe. Then, the fastening screws on the surface of the rotating plate are rotated, and the pressing plate is driven to move under the action of the fastening screws, so that the pressing plate moves to the surface of the installation pipe and is closely attached to the water outlet pipe, the pipe body and the water inlet pipe, thereby realizing the function of facilitating the installation of the installation pipe, thereby improving the convenience during use;

[0020] 2. By setting up a filtering mechanism, the fine impurities in the water are processed under the action of the large-pore filter and the small-pore filter. The impurities fall to the bottom of the treatment cylinder through the filter, and the water is purified under the action of the screen and the purification layer, realizing the function of the sand filter sewage treatment device to filter the water again, thereby improving the filtering effect of the sand filter sewage treatment device;

[0021] 3. By providing a sealing mechanism, the connecting block is fixed to the surface of the mounting pipe under the action of the fastening bolts, thereby fixing the sealing ring inside the mounting pipe, and the gap between the connecting pipe and the mounting pipe is sealed under the action of the waterproof pad and the sealing pad, so that water will not flow out through the gap between the connecting pipe and the mounting pipe. Under the action of the adhesive layer, the sealing ring and the waterproof pad are more firmly adhered and not easy to crack, thereby realizing the sealing function of the gap between the connecting pipe and the mounting pipe, thereby avoiding water leakage during use, and having good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0024] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of the mounting mechanism;

[0025] Figure 4 For the present invention Figure 2 Enlarged structural diagram of the sealing mechanism.

[0026] In the figure: 1. treatment cylinder; 101. control button; 102. water outlet pipe; 103. pipe body; 104. water inlet pipe; 105. connecting pipe; 106. spiral rod; 107. filter; 108. discharge pipe; 109. installation pipe; 2. filtering mechanism; 201. small hole filter; 202. screen; 203. purification layer; 204. large hole filter; 3. installation mechanism; 301. pressing plate; 302. fastening screw; 303. rotating plate; 304. mounting block; 305. mounting groove; 4. sealing mechanism; 401. adhesive layer; 402. connecting block; 403. fastening bolt; 404. sealing ring; 405. waterproof pad; 406. sealing pad. DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] like Figure 1-2As shown, the sand filter sewage treatment device for construction engineering includes a treatment barrel 1, a control button 101 is fixed on the surface of the treatment barrel 1, and the model of the control button 101 can be selected from the LA series, and a water outlet pipe 102 is installed on the surface of the control button 101, and one end of the water outlet pipe 102 extends to the inside of the treatment barrel 1, a pipe body 103 is installed on the surface of the treatment barrel 1, and one end of the pipe body 103 extends to the inside of the treatment barrel 1, and a water inlet pipe 104 is installed on the surface of the treatment barrel 1, and one end of the water inlet pipe 104 extends to the inside of the treatment barrel 1, and the water outlet pipe 102, the pipe body 103 and the water inlet pipe The surface of 104 is provided with a mounting tube 109, a spiral rod 106 is installed inside the treatment tube 1, and a filter 107 is fixed at the bottom of the spiral rod 106, a connecting tube 105 is installed on the surface of the spiral rod 106, and the connecting tube 105 is connected to the spiral rod 106, and one end of the connecting tube 105 extends to the inside of the mounting tube 109 on the surface of the outlet pipe 102, a discharge pipe 108 is installed at the bottom of the treatment tube 1, and a valve is mounted on the surface of the discharge pipe 108, the model of the valve can be selected from the TM series, and the input of the valve is electrically connected to the output end of the control button 101.

[0031] Furthermore, if Figure 2 and Figure 3 As shown, the surfaces of the water outlet pipe 102, the pipe body 103 and the water inlet pipe 104 are all provided with a mounting mechanism 3, and the interior of the mounting mechanism 3 respectively includes a pressing plate 301, a fastening screw 302, a rotating plate 303, a mounting block 304 and a mounting groove 305, the surfaces of the water outlet pipe 102, the pipe body 103 and the water inlet pipe 104 are all fixed with a mounting block 304, the surface of the mounting pipe 109 is provided with a mounting groove 305, and the mounting groove 305 and the mounting block 304 are mutually engaged In coordination, the surfaces of the water outlet pipe 102, the tube body 103 and the water inlet pipe 104 are all rotatably connected with a rotating plate 303, and the surface of the rotating plate 303 is threadedly connected with a fastening screw 302, and one end of the fastening screw 302 passes through the rotating plate 303 and extends to the inner side of the rotating plate 303, and the surface of the fastening screw 302 is provided with a clamping plate 301, and the clamping plate 301 is tightly fitted with the surface of the mounting tube 109, and the clamping plate 301 and the fastening screw 302 are rotatably coordinated with each other.

[0032] During implementation, the mounting block 304 is clamped into the inside of the mounting groove 305 on the surface of the mounting pipe 109. Subsequently, the fastening screw 302 on the surface of the rotating plate 303 is rotated, and the clamping plate 301 is driven to move under the action of the fastening screw 302, so that the clamping plate 301 moves to fit tightly against the surface of the mounting pipe 109, thereby fixing the mounting pipe 109 to the outlet pipe 102, the pipe body 103 and the inlet pipe 104, so as to realize the function of installing the mounting pipe 109 of the sand filter sewage treatment device.

[0033] Furthermore, if Figure 2As shown, the spiral rod 106 and the connecting tube 105 are both provided with a filtering mechanism 2, and the filtering mechanism 2 is composed of a small-pore filter 201, a screen 202, a purification layer 203 and a large-pore filter 204. The large-pore filter 204 is fixed inside the spiral rod 106, the small-pore filter 201 is installed inside the spiral rod 106, and the small-pore filter 201 is located above the large-pore filter 204, the screen 202 is installed inside the spiral rod 106, and the screen 202 is located above the small-pore filter 201, and the purification layer 203 is fixed to the inner wall of the connecting tube 105.

[0034] During implementation, fine impurities in the water are processed under the action of the large-pore filter 204 and the small-pore filter 201, and the impurities fall to the bottom of the treatment tube 1 through the filter 107. The water is purified under the action of the screen 202 and the purification layer 203 to realize the function of the sand filter sewage treatment device to filter the water again.

[0035] Furthermore, if Figure 2 and Figure 4 As shown, a sealing mechanism 4 is provided on the surface of the connecting tube 105, and the interior of the sealing mechanism 4 includes an adhesive layer 401, a connecting block 402, a fastening bolt 403, a sealing ring 404, a waterproof pad 405 and a sealing pad 406. A sealing ring 404 is provided on the inner wall of the mounting tube 109, and the connecting block 402 is fixed on the surface of the sealing ring 404. The surface of the connecting block 402 is threadedly connected with the fastening bolt 403, and one end of the fastening bolt 403 passes through the connecting block 402 and is threadedly fastened to the surface of the mounting tube 109. An adhesive layer 401 is fixed on the inner wall of the sealing ring 404, and the surface of the adhesive layer 401 is adhered with the waterproof pad 405, the surface of the waterproof pad 405 is covered with a sealing pad 406, and the surface of the sealing pad 406 is tightly fitted with the surface of the connecting tube 105.

[0036] During implementation, the connecting block 402 is fixed on the surface of the mounting tube 109 under the action of the fastening bolts 403, thereby fixing the sealing ring 404 inside the mounting tube 109, and the gap between the connecting tube 105 and the mounting tube 109 is sealed under the action of the waterproof pad 405 and the sealing pad 406, so that water does not flow out through the gap between the connecting tube 105 and the mounting tube 109, and the sealing ring 404 and the waterproof pad 405 are more firmly adhered and not easy to crack under the action of the adhesive layer 401, so as to realize the sealing function of the gap between the connecting tube 105 and the mounting tube 109 of the sand filter sewage treatment device.

[0037] Working principle: When in use, first place the treatment tube 1 at the designated position, and place the mounting tube 109 on the surfaces of the tube body 103, the water inlet pipe 104 and the water outlet pipe 102 respectively. At this time, the mounting block 304 is stuck to the inside of the mounting groove 305 on the surface of the mounting tube 109. Subsequently, the fastening screw 302 on the surface of the rotating plate 303 is rotated, and the clamping plate 301 is driven to move under the action of the fastening screw 302, so that the clamping plate 301 moves to the surface of the mounting tube 109 and is tightly attached, thereby fixing the mounting tube 109 to the water outlet pipe 102, the tube body 103 and the water inlet pipe 104, so as to realize the function of facilitating the installation of the mounting tube 109 in the sand filter sewage treatment device, thereby improving the convenience of the sand filter sewage treatment device when in use.

[0038] Subsequently, the sewage to be treated is introduced into the treatment tube 1 through the installation pipe 109 on the surface of the water inlet pipe 104. The sewage falls under the action of the spiral rod 106, and the water is filtered by sand under the action of the filter 107. At this time, the impurities in the water remain in the treatment tube 1. The water after the sand filtering passes through the filter 107 and enters the spiral rod 106 and the connecting pipe 105 in turn. At this time, the fine impurities in the water are processed under the action of the large-pore filter 204 and the small-pore filter 201. The impurities fall to the bottom of the treatment tube 1 through the filter 107, and the water is purified under the action of the screen 202 and the purification layer 203 to realize the function of the sand filtering sewage treatment device to filter the water again, thereby improving the filtering effect of the sand filtering sewage treatment device. It can be understood that the outlet pipe 102 can be connected to a water pump, etc. to ensure that the filtered water is pumped out.

[0039] Subsequently, the control button 101 is operated so that the control button 101 controls the valve on the surface of the discharge pipe 108 to operate, and impurities are discharged from the interior of the treatment tube 1 through the discharge pipe 108, and water enters the interior of the mounting tube 109 through the connecting pipe 105. At this time, the connecting block 402 is fixed to the surface of the mounting tube 109 under the action of the fastening bolts 403, so that the sealing ring 404 is fixed to the interior of the mounting tube 109, and the gap between the connecting tube 105 and the mounting tube 109 is sealed under the action of the waterproof pad 405 and the sealing pad 406, so that water does not flow out through the gap between the connecting tube 105 and the mounting tube 109, and the sealing ring 404 and the waterproof pad 405 are more firmly adhered and not easy to crack under the action of the adhesive layer 401, so as to realize the sealing function of the gap between the connecting tube 105 and the mounting tube 109 of the sand filter sewage treatment device, thereby avoiding water leakage during the use of the sand filter sewage treatment device, and finally completing the use of the sand filter sewage treatment device.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A sand filter sewage treatment device for construction engineering, comprising a treatment cylinder (1), characterized in that: A control button (101) is fixed on the surface of the treatment cylinder (1), and a water outlet pipe (102) is installed on the surface of the control button (101), and one end of the water outlet pipe (102) extends into the interior of the treatment cylinder (1), a spiral rod (106) is installed inside the treatment cylinder (1), and a filter (107) is fixed at the bottom of the spiral rod (106), a connecting pipe (105) is installed on the surface of the spiral rod (106), and the surfaces of the water outlet pipe (102), the pipe body (103) and the water inlet pipe (104) are all provided with a mounting mechanism (3), the interiors of the spiral rod (106) and the connecting pipe (105) are both provided with a filtering mechanism (2), and the surface of the connecting pipe (105) is provided with a sealing mechanism (4).

2. The sand filter sewage treatment device for construction engineering according to claim 1 is characterized in that: A tube body (103) is installed on the surface of the treatment tube (1), and one end of the tube body (103) extends into the interior of the treatment tube (1). A water inlet pipe (104) is installed on the surface of the treatment tube (1), and one end of the water inlet pipe (104) extends into the interior of the treatment tube (1). The surfaces of the water outlet pipe (102), the tube body (103) and the water inlet pipe (104) are all provided with mounting pipes (109).

3. The sand filter sewage treatment device for construction engineering according to claim 1 is characterized in that: The filtering mechanism (2) is composed of a small-pore filter (201), a screen (202), a purification layer (203) and a large-pore filter (204); the large-pore filter (204) is fixed inside the spiral rod (106); the small-pore filter (201) is installed inside the spiral rod (106), and the small-pore filter (201) is located above the large-pore filter (204).

4. The sand filter sewage treatment device for construction engineering according to claim 3 is characterized in that: The screen (202) is installed inside the spiral rod (106), and the screen (202) is located above the small-pore filter (201). A purification layer (203) is fixed to the inner wall of the connecting pipe (105).

5. The sand filter sewage treatment device for construction engineering according to claim 2 is characterized in that: The interior of the mounting mechanism (3) respectively comprises a pressing plate (301), a fastening screw (302), a rotating plate (303), a mounting block (304) and a mounting groove (305); the surfaces of the water outlet pipe (102), the pipe body (103) and the water inlet pipe (104) are all fixed with mounting blocks (304); the surface of the mounting pipe (109) is provided with mounting grooves (305), and the mounting grooves (305) and the mounting blocks (304) are mutually engaged.

6. The sand filter sewage treatment device for construction engineering according to claim 5 is characterized by: The surfaces of the water outlet pipe (102), the pipe body (103) and the water inlet pipe (104) are all rotatably connected to a rotating plate (303), and the surface of the rotating plate (303) is threadedly connected to the fastening screw (302), and one end of the fastening screw (302) passes through the rotating plate (303) and extends to the inner side of the rotating plate (303).

7. The sand filter sewage treatment device for construction engineering according to claim 6 is characterized by: The surface of the fastening screw (302) is provided with a clamping plate (301), and the clamping plate (301) is tightly fitted with the surface of the mounting tube (109), and the clamping plate (301) and the fastening screw (302) are rotatably matched with each other.

8. The sand filter sewage treatment device for construction engineering according to claim 2 is characterized by: The sealing mechanism (4) includes an adhesive layer (401), a connecting block (402), a fastening bolt (403), a sealing ring (404), a waterproof pad (405) and a sealing pad (406).

9. The sand filter sewage treatment device for construction engineering according to claim 8, characterized in that: The inner wall of the mounting tube (109) is provided with a sealing ring (404), and a connecting block (402) is fixed to the surface of the sealing ring (404). The surface of the connecting block (402) is threadedly connected with a fastening bolt (403), and one end of the fastening bolt (403) passes through the connecting block (402) and is threadedly fastened to the surface of the mounting tube (109).

10. The sand filter sewage treatment device for construction engineering according to claim 8, characterized in that: An adhesive layer (401) is fixed to the inner wall of the sealing ring (404), and a waterproof pad (405) is adhered to the surface of the adhesive layer (401). The surface of the waterproof pad (405) is covered with a sealing pad (406), and the surface of the sealing pad (406) is tightly fitted to the surface of the connecting pipe (105).

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