A sewage impurity efficient interception and automatic cleaning mechanical grid device

Abstract

This disclosure relates to the field of wastewater treatment technology. One embodiment of this disclosure provides a mechanical bar screen device for efficient interception and automatic cleaning of wastewater impurities. The device includes a treatment chamber with an inlet, an outlet, and a treatment cavity. Both the inlet and outlet are connected to the treatment cavity. It also includes a screening bar screen disposed within the treatment cavity. The two ends of the screening bar screen are respectively connected to the inlet and outlet, and the two ends of the screening bar screen reciprocate vertically within the inlet and outlet, respectively. This technical solution solves the technical problem in existing wastewater treatment processes where the screen on the bar screen is difficult to clean and prone to clogging.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of wastewater treatment technology, and more specifically, to a mechanical bar screen device for efficient interception and automatic cleaning of wastewater impurities. Background Technology

[0002] Wastewater refers to polluted wastewater from domestic and industrial processes that has lost its original function. It primarily consists of wastewater from domestic use, containing a high amount of organic matter and relatively easy to treat. The process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse is called wastewater treatment. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering, and is increasingly becoming a part of everyday life. Rotary bar screens are specialized water treatment equipment that removes various shapes of debris from fluids. One of the most advanced solid-liquid separation devices, it is a specialized water treatment device that can continuously and automatically intercept and remove various shapes of debris from fluids. It can be widely used in urban wastewater treatment, water supply systems, power plant inlets, and can also be used as a pre-screening device in wastewater treatment processes in industries such as textiles, food processing, papermaking, and leather.

[0003] In existing technologies, wastewater is screened using bar screens to achieve solid-liquid separation. However, how to clean the bar screens is a problem in this industry. Therefore, we need a bar screen device to solve the above-mentioned technical problems. Summary of the Invention

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities, which solves the technical problem in the prior art that the screen on the bar screen is not easy to clean and is prone to clogging during sewage treatment.

[0005] According to one aspect, at least one embodiment of this disclosure provides a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities, including a treatment chamber having an inlet, an outlet, and a treatment cavity, wherein the inlet and the outlet are both connected to the treatment cavity; and further including a screening bar screen disposed within the treatment cavity, wherein the two ends of the screening bar screen are respectively connected to the inlet and the outlet, and the two ends of the screening bar screen reciprocate vertically within the inlet and the outlet, respectively.

[0006] According to another aspect, at least one embodiment of this disclosure also provides a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities. The bar screen includes a connecting bed and a screen, the screen being disposed on the connecting bed, and both ends of the connecting bed reciprocating vertically within the inlet and the outlet.

[0007] According to another aspect, at least one embodiment of this disclosure also provides a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities, which further includes elastic elements, at least two of which are connected to the feed inlet and the discharge outlet respectively through the elastic elements.

[0008] According to another aspect, at least one embodiment of this disclosure also provides a mechanical bar screen for efficient interception and automatic cleaning of sewage impurities, wherein the feed inlet is positioned vertically higher than the discharge outlet.

[0009] According to another aspect, at least one embodiment of this disclosure also provides a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities. The treatment chamber further includes a first guide groove and a second guide groove, which are arranged vertically. The first guide groove communicates with the inlet, and the second guide groove communicates with the outlet. It also includes a first driving member and a second driving member, which are slidably disposed in the first guide groove and the second driving member are slidably disposed in the second guide groove. The first driving member and the second driving member are slidably used to contact the two ends of the connecting bed, respectively.

[0010] According to another aspect, at least one embodiment of this disclosure also provides a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities, which further includes a first cam and a second cam. The first cam and the second cam are rotatably disposed in the treatment chamber. The rotation of the first cam is used to cause the first driving member to slide along the first guide groove, and the rotation of the second cam is used to cause the second driving member to slide along the second guide groove.

[0011] According to another aspect, at least one embodiment of this disclosure also provides a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities, which further includes,

[0012] The collection bin has its inlet connected to the outlet.

[0013] The crushing rollers, at least two in number, are rotatably disposed within the collection chamber. Each crushing roller has a plurality of uniformly distributed crushing teeth, and the crushing teeth on adjacent crushing rollers mesh with each other.

[0014] According to another aspect, at least one embodiment of this disclosure also provides a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities, which further includes,

[0015] A stirring shaft is rotatably mounted inside the processing chamber, the stirring shaft is vertically positioned below the screen.

[0016] The stirring blades are evenly distributed on the stirring shaft.

[0017] According to another aspect, at least one embodiment of this disclosure also provides a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities, which further includes,

[0018] The first drive wheel is coaxially arranged with the first cam.

[0019] The second drive wheel is coaxially arranged with the second cam.

[0020] A first transmission belt is fitted onto the first drive wheel and the second drive wheel.

[0021] A first drive motor, the output end of which is connected to the first drive wheel.

[0022] According to another aspect, at least one embodiment of this disclosure also provides a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities, which further includes,

[0023] The third drive wheel is coaxially arranged with the stirring shaft.

[0024] The fourth drive wheel, there are at least two fourth drive wheels, and each fourth drive wheel is coaxially arranged with the crushing roller.

[0025] The second transmission belt is fitted onto the fourth drive wheel.

[0026] The second drive motor has its output end connected to the third drive wheel.

[0027] A third drive motor, the output of which is connected to one of the fourth drive wheels.

[0028] The beneficial effects of the embodiments disclosed herein are as follows:

[0029] In this disclosure, wastewater flows into the treatment chamber from the inlet and encounters a screening grid, which intercepts solids in the wastewater. The screening grid reciprocates vertically at both ends within the inlet and outlet, causing the solid material on the grid to move and detach, thus preventing solid material accumulation and clogging. The intercepted impurities are discharged from the outlet by gravity, while the wastewater falls through the screening grid and is collected in the collection chamber, allowing for more efficient wastewater screening.

[0030] This disclosure achieves preliminary interception of impurities in wastewater, features a simple structure, is suitable for small-scale wastewater treatment scenarios, effectively reduces the burden on subsequent treatment equipment, and improves wastewater treatment efficiency. It also provides a basic framework for subsequent optimization of the structure and function of the screening grid, facilitating targeted improvements based on different wastewater characteristics. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0032] Figure 1 This is a schematic diagram of a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities in one embodiment of the present disclosure;

[0033] Figure 2 for Figure 1 A schematic diagram of the internal structure of a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities is shown in one embodiment.

[0034] Figure 3 for Figure 2 A magnified view of a portion at point A in the embodiment;

[0035] In the diagram: 101, feed inlet; 102, discharge outlet; 103, processing chamber; 1, processing bin; 2, screening grid; 201, connecting bed; 202, screen; 3, elastic element; 104, first guide groove; 105, second guide groove; 4, first driving element; 5, second driving element; 6, first cam; 7, second cam; 8, collection bin; 9, crushing roller; 901, crushing teeth; 10, stirring shaft; 11, stirring blade; 12, first drive wheel; 13, second drive wheel; 14, first transmission belt; 15, first drive motor; 16, third drive wheel; 17, fourth drive wheel; 18, second transmission belt; 19, second drive motor; 20, third drive motor. Detailed Implementation

[0036] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0037] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0038] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0039] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0041] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] like Figures 1-3As shown, according to one aspect of an embodiment of the present disclosure, the present disclosure provides at least one mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities, including a treatment chamber 1 having an inlet 101, an outlet 102, and a treatment chamber 103, wherein the inlet 101 and the outlet 102 are both connected to the treatment chamber 103; and a screening bar 2 disposed within the treatment chamber 103, wherein both ends of the screening bar 2 are respectively connected to the inlet 101 and the outlet 102, and both ends of the screening bar 2 reciprocate vertically within the inlet 101 and the outlet 102.

[0043] In this embodiment, wastewater flows into the treatment chamber 103 from the inlet 101 and encounters the screening grid 2, which intercepts solids in the wastewater. The screening grid 2 reciprocates vertically at both ends within the inlet 101 and outlet 102, causing the solid material on the screening grid 2 to move and detach, thus preventing the accumulation and clogging of the screening grid 2. The intercepted impurities are discharged from the outlet 102 under gravity, while the wastewater falls through the screening grid 2 and is collected in the collection chamber 8, thereby achieving more efficient wastewater screening.

[0044] This disclosure achieves preliminary interception of impurities in wastewater, features a simple structure, is suitable for small-scale wastewater treatment scenarios, effectively reduces the burden on subsequent treatment equipment, and improves wastewater treatment efficiency. It provides a basic framework for subsequent optimization of the structure and function of the screen grid 2, facilitating targeted improvements based on different wastewater characteristics.

[0045] Furthermore, the screening grid 2 includes a connecting bed 201 and a screen 202. The screen 202 is disposed on the connecting bed 201, and the two ends of the connecting bed 201 reciprocate vertically within the feed inlet 101 and the discharge outlet 102.

[0046] In this embodiment, the connecting bed 201 reciprocates vertically at both ends within the inlet 101 and outlet 102, driving the screen 202 mounted on it to move synchronously. When wastewater flows into the treatment chamber 103, the screen 202 intercepts impurities in the wastewater. The connecting bed 201 provides stable support for the screen 202, ensuring that the screen 202 can effectively screen wastewater during its reciprocating motion. The intercepted impurities are carried out of the treatment chamber 103 by gravity and the movement of the screen 202. The structural design of the connecting bed 201 and the screen 202 makes the screening grid 2 more stable and efficient, adaptable to the characteristics of large wastewater volume and complex impurities in medium-scale wastewater treatment scenarios, improving the impurity interception effect, providing a convenient approach for the maintenance and replacement of the screen 202, and the lightweight design helps reduce energy consumption, improve the overall performance of the device, and meet the needs of sustainable development.

[0047] Furthermore, it also includes elastic elements 3, of which there are at least two, and the two ends of the connecting bed 201 are respectively connected to the feed port 101 and the discharge port 102 through the elastic elements 3.

[0048] In this embodiment, when sewage flows into the treatment chamber 103 and impacts the screen grid 2, the elastic element 3 acts as a buffer. The connecting bed 201 is connected to the inlet 101 and outlet 102 at both ends via the elastic element 3. When the sewage flow rate changes or impurities impact, the elastic element 3 can expand and contract to absorb the impact force, allowing the connecting bed 201 and the screen 202 to reciprocate stably vertically, continuously intercepting impurities from the sewage. The elastic element 3 enhances the stability and adaptability of the screen grid 2, enabling it to operate normally under varying sewage flow rates and impurity impacts, improving the reliability and durability of the device. The adjustable elastic coefficient and anti-corrosion coating further optimize the performance of the elastic element 3, extending its service life, adapting to different sewage environments, and reducing maintenance costs.

[0049] Furthermore, the vertical position of the feed inlet 101 is higher than the vertical position of the discharge outlet 102.

[0050] In this embodiment, since the inlet 101 is vertically higher than the outlet 102, wastewater flows into the treatment chamber 1 from the inlet 101 under gravity. When it passes through the screening grid 2, impurities are intercepted, and the wastewater continues to flow downwards and exits from the outlet 102. This gravity-driven wastewater flow method reduces the use of additional power equipment, while allowing wastewater to pass through the screening grid 2 continuously and stably during impurity interception, thus improving screening efficiency. Utilizing gravity to achieve gravity-driven wastewater flow reduces energy consumption and equipment costs, making it suitable for wastewater treatment scenarios with terrain differences or multi-story buildings, improving the economy and smoothness of wastewater treatment. This provides direction for device optimization based on the height difference between the inlet 101 and the outlet 102. By adjusting the motion parameters of the screening grid 2 and setting guide plates, the impurity interception efficiency and overall device performance can be further improved.

[0051] Furthermore, the processing chamber 1 also has a first guide groove 104 and a second guide groove 105, which are arranged vertically. The first guide groove 104 is connected to the feed inlet 101, and the second guide groove 105 is connected to the discharge outlet 102. It also includes a first driving member 4 and a second driving member 5. The first driving member 4 is slidably disposed in the first guide groove 104, and the second driving member 5 is slidably disposed in the second guide groove 105. The first driving member 4 and the second driving member 5 are slidably used to contact the two ends of the connecting bed 201 respectively.

[0052] In this embodiment, the first driving member 4 slides within the first guide groove 104, and the second driving member 5 slides within the second guide groove 105, respectively contacting both ends of the connecting bed 201. By controlling the sliding of the first driving member 4 and the second driving member 5 within the guide grooves, the two ends of the connecting bed 201 are driven to reciprocate vertically, thereby enabling the screen grid 2 to stably intercept impurities within the processing chamber 103. The guide grooves provide a precise motion track for the driving members, ensuring the accuracy and stability of the screen grid 2's movement. To prevent the elastic member 3 from obstructing the first driving member 4 and the second driving member 5, the first driving member 4 and the second driving member 5 pass through the elastic member 3. The arrangement of the first guide groove 104, the second guide groove 105, the first driving member 4, and the second driving member 5 improves the accuracy and stability of the screen grid 2's movement, making it suitable for high-requirement treatment scenarios such as large-scale sewage treatment plants. It effectively improves impurity interception efficiency and provides a feasible structural solution for the upgrading and transformation of sewage treatment equipment. Furthermore, the installation of lubrication devices and position sensors further optimizes the device performance and extends the equipment's service life.

[0053] Furthermore, it also includes a first cam 6 and a second cam 7. The first cam 6 and the second cam 7 are both rotatably disposed within the processing chamber 1. The first cam 6 rotates to act on the first driving member 4 to slide along the first guide groove 104, and the second cam 7 rotates to act on the second driving member 5 to slide along the second guide groove 105.

[0054] In this embodiment, when the first cam 6 rotates, its contour contacts the first driving member 4 and pushes the first driving member 4 to slide along the first guide groove 104; similarly, the second cam 7 rotates and pushes the second driving member 5 to slide along the second guide groove 105. The sliding of the two driving members drives the two ends of the connecting bed 201 to reciprocate vertically, thereby enabling the screen grid 2 to continuously intercept impurities within the processing chamber 103. Through the rotation of the cam, the rotational motion is converted into the linear reciprocating motion of the driving member, providing a stable power source for the screen grid 2. The first cam 6 and the second cam 7 provide a stable and reliable driving method for the movement of the screen grid 2, ensuring the continuous and stable operation of the wastewater treatment plant, while facilitating standardized production of the equipment and reducing manufacturing costs. The design of the adjustable profile cam and the overload protection device further optimizes the performance of the cam drive system, improves the adaptability and reliability of the equipment, reduces the risk of equipment damage, and lowers maintenance costs.

[0055] Furthermore, it also includes,

[0056] The collection chamber 8 has its inlet end connected to the discharge port 102.

[0057] The crushing roller 9, there are at least two crushing rollers 9, and both crushing rollers 9 are rotatably disposed in the collection bin 8. Each crushing roller 9 has a plurality of crushing teeth 901 evenly distributed on it, and the crushing teeth 901 on adjacent crushing rollers 9 mesh with each other.

[0058] In this embodiment, impurities intercepted by the screening grid 2 enter the collection bin 8 through the discharge port 102, where at least two rotating crushing rollers 9 crush the impurities. The crushing teeth 901 on the crushing rollers 9 mesh with each other. When impurities enter between the crushing rollers 9, they are crushed into smaller fragments by the squeezing, shearing, and friction of the crushing teeth 901. The crushed impurities can then be further collected, transported, or otherwise processed. The arrangement of the collection bin 8 and the crushing rollers 9 achieves the crushing and volume reduction of intercepted impurities, facilitating subsequent processing, reducing waste disposal costs, and improving the environmental friendliness of industrial wastewater treatment. It is suitable for both urban and industrial wastewater treatment scenarios. The design of replaceable crushing rollers 9 and the impurity sorting device further optimizes the impurity treatment process, improves crushing efficiency and resource recovery rate, and meets the needs of different wastewater impurity treatment.

[0059] According to another aspect, at least one embodiment of this disclosure also provides a mechanical bar screen device for efficient interception and automatic cleaning of sewage impurities, which further includes,

[0060] A stirring shaft 10 is rotatably mounted inside the processing chamber 1. The stirring shaft 10 is vertically positioned below the screen 202.

[0061] Stirring blades 11 are evenly distributed on the stirring shaft 10.

[0062] In this embodiment, the stirring shaft 10 rotates under the drive of a motor, causing the stirring blades 11, which are evenly distributed on it, to rotate. The stirring blades 11 push the sewage below the screen 202 to flow, so that impurities in the sewage are evenly distributed in the treatment chamber 103, avoiding local sedimentation. At the same time, the water flow generated by stirring promotes more thorough contact between the sewage and the screen 202, improving the efficiency of the screen 202 in intercepting impurities. The arrangement of the stirring shaft 10 and the stirring blades 11 effectively improves the interception efficiency of the screen 202 for impurities in high-concentration sewage and sewage with fluctuating water quality, enhances the adaptability of the sewage treatment device to different water quality conditions, and ensures the stability of the sewage treatment effect. Through the design of variable frequency drive and detachable baffle, the stirring effect is further optimized, energy utilization efficiency is improved, and the treatment needs of different sewage characteristics are met.

[0063] Furthermore, it also includes,

[0064] The first drive wheel 12 is coaxially arranged with the first cam 6.

[0065] The second drive wheel 13 is coaxially arranged with the second cam 7.

[0066] A first transmission belt 14 is fitted onto the first drive wheel 12 and the second drive wheel 13.

[0067] The first drive motor 15 is connected to the first drive wheel 12 at its output end.

[0068] In this embodiment, after the first drive motor 15 starts, its output drives the first drive wheel 12 to rotate. The first drive wheel 12 drives the second drive wheel 13 to rotate through the first transmission belt 14. Since the first drive wheel 12 is coaxial with the first cam 6 and the second drive wheel 13 is coaxial with the second cam 7, the first cam 6 and the second cam 7 rotate synchronously. The rotation of the first cam 6 and the second cam 7 acts on the first drive member 4 and the second drive member 5 respectively, causing them to slide in the guide groove, thereby driving the screen grid 2 to reciprocate within the treatment chamber 103, achieving the interception of sewage impurities. The transmission system composed of the first drive wheel 12, the second drive wheel 13, the first transmission belt 14, and the first drive motor 15 realizes the coordinated drive of multiple components, ensuring the stability and accuracy of the movement of the screen grid 2, and is suitable for the efficient operation of large sewage treatment plants and the compact design of sewage treatment facilities with limited space. By setting the tensioning device and the intelligent speed regulator, the performance of the transmission system is further optimized, improving the transmission efficiency and energy utilization efficiency, ensuring that the equipment can operate stably under different working conditions.

[0069] Furthermore, it also includes,

[0070] The third drive wheel 16 is coaxially arranged with the stirring shaft 10.

[0071] The fourth drive wheel 17, there are at least two fourth drive wheels 17, and each fourth drive wheel 17 is coaxially arranged with the crushing roller 9.

[0072] The second transmission belt 18 is sleeved on the fourth drive wheel 17.

[0073] The second drive motor 19 has its output terminal connected to the third drive wheel 16.

[0074] The third drive motor 20, the output of which is connected to the fourth drive wheel 17.

[0075] In this embodiment, after the second drive motor 19 starts, its output drives the third drive wheel 16 to rotate, thereby causing the stirring shaft 10, which is coaxial with the third drive wheel 16, to rotate, and the stirring blades 11 to stir the sewage. After the third drive motor 20 starts, its output drives a fourth drive wheel 17 to rotate, which in turn drives other fourth drive wheels 17 to rotate synchronously via the second transmission belt 18, causing the crushing roller 9, which is coaxial with the fourth drive wheel 17, to rotate and crush the impurities entering the collection bin 8. The entire system achieves simultaneous sewage stirring and impurity crushing through the coordinated work of multiple drive components, improving sewage treatment efficiency. The multi-drive system composed of the third drive wheel 16, the fourth drive wheel 17, the second transmission belt 18, the second drive motor 19, and the third drive motor 20 realizes the coordinated work of stirring and crushing in the sewage treatment process, which is suitable for the customized needs of large-scale sewage treatment and industrial sewage treatment, and improves the overall efficiency and quality of sewage treatment. The intelligent control system and torque sensor further optimize the equipment performance, improve the safety and stability of the equipment, realize intelligent control of the sewage treatment process, and meet the high efficiency and precision requirements of modern sewage treatment.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A sewage impurity high-efficiency interception and automatic cleaning mechanical grid device, characterized in that, The system includes a processing chamber (1) having an inlet (101), an outlet (102), and a processing cavity (103), wherein the inlet (101) and the outlet (102) are both connected to the processing cavity (103); it also includes a screening grid (2), which is disposed in the processing cavity (103), and the two ends of the screening grid (2) are respectively connected to the inlet (101) and the outlet (102), and the two ends of the screening grid (2) reciprocate vertically within the inlet (101) and the outlet (102).

2. The mechanical grid device for intercepting and automatically cleaning sewage impurities according to claim 1, characterized in that, The screening grid (2) includes a connecting bed (201) and a screen (202). The screen (202) is disposed on the connecting bed (201). The two ends of the connecting bed (201) reciprocate vertically within the feed inlet (101) and the discharge outlet (102).

3. The mechanical grid device for intercepting and automatically cleaning sewage impurities according to claim 2, characterized in that, It also includes elastic elements (3), there are at least two elastic elements (3), and the two ends of the connecting bed (201) are respectively connected to the feed port (101) and the discharge port (102) through the elastic elements (3).

4. The mechanical grid device for intercepting and automatically cleaning sewage impurities according to claim 3, characterized in that, The feed inlet (101) is positioned vertically higher than the discharge outlet (102).

5. The sewage impurity high-efficiency intercepting and automatically cleaning mechanical grid device according to claim 3, characterized in that, The processing chamber (1) also has a first guide groove (104) and a second guide groove (105), the first guide groove (104) and the second guide groove (105) are arranged vertically, the first guide groove (104) is connected to the feed port (101), and the second guide groove (105) is connected to the discharge port (102); it also includes a first drive member (4) and a second drive member (5), the first drive member (4) is slidably disposed in the first guide groove (104), and the second drive member (5) is slidably disposed in the second guide groove (105), and the first drive member (4) and the second drive member (5) are slidably used to contact the two ends of the connecting bed (201) respectively.

6. The sewage impurity high-efficiency intercepting and automatically cleaning mechanical grid device according to claim 5, characterized in that, It also includes a first cam (6) and a second cam (7). The first cam (6) rotates and the second cam (7) rotates within the processing chamber (1). The first cam (6) rotates to act on the first drive member (4) to slide along the first guide groove (104). The second cam (7) rotates to act on the second drive member (5) to slide along the second guide groove (105).

7. The mechanical screen device according to claim 6, wherein, It also includes, The collection bin (8) has its inlet end connected to the outlet (102). The crushing roller (9) has at least two crushing rollers (9), and at least two crushing rollers (9) are rotatably disposed in the collection bin (8). The crushing roller (9) has a plurality of crushing teeth (901) evenly distributed on it, and the crushing teeth (901) on adjacent crushing rollers (9) mesh with each other.

8. The mechanical grid device for intercepting and automatically cleaning sewage impurities according to claim 6, characterized in that, It also includes, A stirring shaft (10) is rotatably disposed within the processing chamber (1). The stirring shaft (10) is vertically positioned below the screen (202). Stirring blades (11) are evenly distributed on the stirring shaft (10).

9. The mechanical grid device for intercepting and automatically cleaning sewage impurities according to claim 8, characterized in that, It also includes, The first drive wheel (12) is coaxially arranged with the first cam (6). The second drive wheel (13) is coaxially arranged with the second cam (7). A first transmission belt (14) is fitted onto the first drive wheel (12) and the second drive wheel (13). The first drive motor (15) is connected to the first drive wheel (12) at its output end.

10. The mechanical screen device according to claim 9, wherein, It also includes, The third drive wheel (16) is coaxially arranged with the stirring shaft (10). The fourth drive wheel (17) has at least two parts; The second transmission belt (18) is sleeved on the fourth drive wheel (17). The output end of the second drive motor (19) is connected to the third drive wheel (16). The third drive motor (20) is connected to the output of a fourth drive wheel (17).

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