A disc filter discharge structure

Abstract

The utility model belongs to the field of sewage treatment, specifically is a kind of disc filter discharging structure, including cleaning tank, the side surface of cleaning tank is equipped with multiple recess corresponding with filter disc position, the top of recess is equipped with the scraper of being located the both sides of filter disc;The bottom of scraper is fixedly connected with support arm, the middle part of support arm is fixedly connected with sliding sleeve, the middle part of sliding sleeve is slidably connected with guide rod, the guide rod is passed through sliding sleeve and is slidably connected with it, the end of guide rod is fixedly connected with connecting ring, spring is fixedly connected between connecting ring and sliding sleeve, when using, the bottom end of push rod and the surface of filter disc or the fixed support of filter disc are pasted, push rod slides on filter disc, rely on being set push rod, be clamped between scraper and filter disc, to reduce the contact of scraper and filter disc, to reduce the abrasion caused by scraper to filter disc, sliding sleeve is slid on guide rod by support arm connection sliding sleeve on scraper, and rely on spring to keep the position of scraper, to make scraper keep to filter cake scraping.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, specifically a discharge structure for a disc filter. Background Technology

[0002] Disc filters are devices used for solid-liquid separation and are widely used in industrial water treatment, wastewater treatment, and food processing.

[0003] In existing technologies, disc filters mainly consist of a wastewater tank, a drive shaft, filter discs, a vacuum assembly, and a filter cake scraping assembly. The drive shaft is rotatably connected inside the wastewater tank and is driven by a motor. The filter discs are mounted on the drive shaft and driven to rotate. The vacuum assembly is used to create negative pressure inside the filter discs and extract the filtrate, thereby causing solid particles to adhere to the filter discs and form a dehydrated filter cake. The wastewater is supplied by a water injection pipe connected to the wastewater tank. An external pump continuously injects wastewater into the water injection pipe and the wastewater tank to meet the continuous wastewater treatment needs of the disc filter.

[0004] However, during use, the scraper and the filter disc are in close contact, and the scraper may scratch the surface of the filter disc during the process of scraping off the filter cake on the filter disc; therefore, a discharge structure for the disc filter is proposed to address the above problem. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a discharge structure for a disc filter.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The discharge structure of the disc filter of this utility model includes a cleaning groove. The side of the cleaning groove is provided with a plurality of grooves corresponding to the positions of the filter discs. The top of the grooves is provided with scrapers located on both sides of the filter discs. The bottom of the scraper is fixedly connected to a support arm. The middle of the support arm is fixedly connected to a sliding sleeve. The middle of the sliding sleeve is slidably connected to a guide rod. The guide rod passes through the sliding sleeve and is slidably connected to it. The end of the guide rod is fixedly connected to a connecting ring. A spring is fixedly connected between the connecting ring and the sliding sleeve. A push rod is installed on the side of the scraper. The guide rod is detachably installed on the side wall of the cleaning groove.

[0007] Preferably, the push rod is hinged to the side wall of the scraper, and a through groove is provided at the corresponding position of the side wall of the cleaning groove and the push rod. The push rod passes through the through groove, and there is an adjustment mechanism between the push rod and the scraper. The adjustment mechanism can adjust the angle between the scraper and the push rod.

[0008] Preferably, the adjusting mechanism includes a screw barrel, a screw rod, and a support. The support is hinged to the bottom of the push rod, the screw rod is rotatably connected to the side of the support, the screw barrel is threadedly connected to the screw rod, and the end of the screw barrel away from the support is hinged to the side wall of the scraper.

[0009] Preferably, the top of the scraper is provided with a notch, and a shovel plate is slidably connected inside the notch. The shovel plate and the scraper are detachably connected by bolts.

[0010] Preferably, the scraper is inclined and can guide the scraped filter cake into the cleaning tank.

[0011] Preferably, the bottom end of the push rod is fixedly connected to a rotating shaft, and a pulley is rotatably connected to the surface of the rotating shaft, and the rotating shaft is located at the bottom of the support.

[0012] The advantages of this utility model are:

[0013] 1. This utility model, by setting a guide rod, a sliding sleeve, a support arm, a spring, a connecting ring, and a push rod, allows the bottom end of the push rod to fit against the surface of the filter disc or the fixed bracket of the filter disc during use. The push rod slides on the filter disc and is clamped between the scraper and the filter disc, thereby reducing the contact between the scraper and the filter disc and reducing the wear caused by the scraper on the filter disc. The scraper is connected to the sliding sleeve through the support arm, and the sliding sleeve slides on the guide rod. The spring maintains the position of the scraper, thereby ensuring that the scraper continues to scrape off the filter cake.

[0014] 2. This utility model, by setting a screw, a support, and a screw cylinder, allows the push rod to be adjusted and rotated during use via an adjustment mechanism. The rotation of the push rod pushes the scraper, thereby adjusting the distance between the scraper and the filter disc. During use, the wastewater contains different solid particles depending on the process, resulting in varying filter cake hardness. This design adjusts the depth of filter cake scraping, thereby reducing the wear rate of the scraper. The adjustment mechanism consists of a screw and a screw cylinder. By rotating the screw and screw cylinder, the push rod is driven to rotate, thus adjusting the distance between the scraper and the filter disc. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0017] Figure 2This is a partial structural diagram of the cleaning groove of this utility model;

[0018] Figure 3 This is a schematic diagram of the scraper structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the push rod structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the support arm of this utility model.

[0021] In the diagram: 11. Cleaning trough; 12. Filter disc; 13. Scraper; 14. Support arm; 15. Guide rod; 16. Spring; 17. Push rod; 18. Sliding sleeve; 21. Support; 22. Screw; 23. Screw barrel; 31. Notched groove; 32. Shovel plate; 61. Shaft; 62. Pulley. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Specific implementation examples are given below. Example 1

[0024] Please see Figure 1-5 As shown, a discharge structure for a disc filter includes a cleaning trough 11. The side of the cleaning trough 11 is provided with a plurality of grooves corresponding to the positions of the filter discs 12. The top of the grooves is provided with scrapers 13 located on both sides of the filter discs 12. A support arm 14 is fixedly connected to the bottom of the scraper 13. A sliding sleeve 18 is fixedly connected to the middle of the support arm 14. A guide rod 15 is slidably connected to the middle of the sliding sleeve 18. The guide rod 15 passes through the sliding sleeve 18 and is slidably connected to it. A connecting ring is fixedly connected to the end of the guide rod 15. A spring 16 is fixedly connected between the connecting ring and the sliding sleeve 18. A push rod 17 is installed on the side of the scraper 13. The guide rod 15 is detachably installed on the side wall of the cleaning trough 11.

[0025] In use, the bottom end of the push rod 17 is in contact with the surface of the filter disc 12 or the fixed bracket of the filter disc 12, and the push rod 17 slides on the filter disc 12. By setting the push rod 17, it is clamped between the scraper 13 and the filter disc 12, thereby reducing the contact between the scraper 13 and the filter disc 12, thereby reducing the wear caused by the scraper 13 to the filter disc 12. The scraper 13 is connected to the sliding sleeve 18 through the support arm 14. The sliding sleeve 18 slides on the guide rod 15 and is held in position by the spring 16, so that the scraper 13 continues to scrape the filter cake.

[0026] Furthermore, such as Figure 1-5 As shown, the push rod 17 is hinged to the side wall of the scraper 14. A through groove is provided at the corresponding position of the side wall of the cleaning groove 11 and the push rod 17. The push rod 17 passes through the through groove. There is an adjustment mechanism between the push rod 17 and the scraper 13. The adjustment mechanism can adjust the angle between the scraper 13 and the push rod 17. The adjustment mechanism includes a screw cylinder 23, a screw 22 and a support 21. The support 21 is hinged to the bottom of the push rod 17. The screw 22 is rotatably connected to the side of the support 21. The screw cylinder 23 is threaded to the screw 22. The end of the screw cylinder 23 away from the support 21 is hinged to the side wall of the scraper 13.

[0027] During use, the push rod 17 can be adjusted and rotated through the adjustment mechanism. The rotation of the push rod 17 can push the scraper 13, thereby adjusting the distance between the scraper 13 and the filter disc 12. During use, the solid particles contained in the wastewater will vary depending on the process, resulting in different hardness of the filter cake. This setting adjusts the depth of filter cake scraping, thereby reducing the wear rate of the scraper 13. The adjustment mechanism consists of a screw 22 and a screw barrel 23. By rotating the screw 22 and the screw barrel 23, the push rod 17 is pushed to rotate, thereby adjusting the distance between the scraper 13 and the filter disc 12.

[0028] Furthermore, such as Figure 1-5 As shown, the top of the scraper 13 has a notch 31, and a shovel 32 is slidably connected inside the notch 31. The shovel 32 and the scraper 13 are detachably connected by bolts. The scraper 13 is inclined and can guide the scraped filter cake into the cleaning tank 11. The bottom end of the push rod 17 is fixed to a rotating shaft 61, and a pulley 62 is rotatably connected to the surface of the rotating shaft 61. The rotating shaft 61 is located at the bottom of the support 21.

[0029] In use, a notch 31 is provided on the top of the scraper 13, and the shovel 32 is slidably inserted into the notch 31. The shovel 32 and the scraper 13 are fixed together by bolts. The shovel 32 replaces the top of the scraper 13 and the filter disc 12 for scraping. The shovel 32 can be disassembled and replaced after it is worn. A rotating shaft 61 and a pulley 62 are installed at the bottom of the push rod 17. The pulley 62 and the surface of the filter disc 12 roll, thereby reducing the friction at the bottom of the push rod 17. Example 2

[0030] Furthermore, such as Figure 1-5As shown, the adjustment mechanism includes a hydraulic cylinder, one end of which is hinged to the side wall of the scraper 13, and the other end of which is hinged to the push rod 17. In this embodiment, by using the hydraulic cylinder, the distance between the scraper 13 and the filter disc 12 can be adjusted online based on the solid particles in the wastewater.

[0031] Working principle: During use, the bottom end of the push rod 17 is in contact with the surface of the filter disc 12 or the fixed bracket of the filter disc 12. The push rod 17 slides on the filter disc 12. By setting the push rod 17, it is clamped between the scraper 13 and the filter disc 12, thereby reducing the contact between the scraper 13 and the filter disc 12, thus reducing the wear caused by the scraper 13 on the filter disc 12. The scraper 13 is connected to the sliding sleeve 18 through the support arm 14. The sliding sleeve 18 slides on the guide rod 15 and is held in position by the spring 16, so that the scraper 13 can continue to scrape the filter cake. During use, the push rod 17 can be adjusted and rotated through the adjustment mechanism. The rotation of the push rod 17 can push the scraper 13, thereby adjusting the distance between the scraper 13 and the filter disc 12. During use, the solid particles contained in the wastewater will vary depending on the process. This results in varying filter cake hardness. Adjusting the depth of filter cake scraping using this setting reduces the wear rate of the scraper 13. The adjustment mechanism consists of a screw 22 and a screw barrel 23. Rotating the screw 22 and screw barrel 23 drives the push rod 17 to rotate, thus adjusting the distance between the scraper 13 and the filter disc 12. In use, a notch 31 is provided on the top of the scraper 13, and a scraper 32 slides into the notch 31. The scraper 32 and the scraper 13 are fixed together with bolts. The scraper 32 scrapes the top of the scraper 13 and the filter disc 12. The scraper 32 can be disassembled and replaced after wear. A rotating shaft 61 and a pulley 62 are installed at the bottom of the push rod 17. The pulley 62 rolls against the surface of the filter disc 12, reducing friction at the bottom of the push rod 17.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A discharge structure for a disc filter, comprising a cleaning trough (11), wherein the side of the cleaning trough (11) is provided with a plurality of grooves corresponding to the positions of the filter disc (12), and the top of the grooves is provided with scrapers (13) located on both sides of the filter disc (12); characterized in that: The scraper (13) has a support arm (14) fixedly connected to its bottom. A sliding sleeve (18) is fixedly connected to the middle of the support arm (14). A guide rod (15) is slidably connected to the middle of the sliding sleeve (18). The guide rod (15) passes through the sliding sleeve (18) and is slidably connected to it. A connecting ring is fixedly connected to the end of the guide rod (15). A spring (16) is fixedly connected between the connecting ring and the sliding sleeve (18). A push rod (17) is installed on the side of the scraper (13). The guide rod (15) is detachably installed on the side wall of the cleaning groove (11).

2. The discharge structure of a disc filter according to claim 1, characterized in that: The push rod (17) is hinged to the side wall of the scraper (13). A through groove is provided on the side wall of the cleaning groove (11) and at the corresponding position of the push rod (17). The push rod (17) passes through the through groove. There is an adjustment mechanism between the push rod (17) and the scraper (13). The adjustment mechanism can adjust the angle between the scraper (13) and the push rod (17).

3. The discharge structure of a disc filter according to claim 2, characterized in that: The adjustment mechanism includes a screw barrel (23), a screw rod (22), and a support (21). The support (21) is hinged to the bottom of the push rod (17). The screw rod (22) is rotatably connected to the side of the support (21). The screw barrel (23) is threaded onto the screw rod (22). The end of the screw barrel (23) away from the support (21) is hinged to the side wall of the scraper (13).

4. The discharge structure of a disc filter according to claim 3, characterized in that: The top of the scraper (13) is provided with a notch (31), and a shovel (32) is slidably connected inside the notch (31). The shovel (32) and the scraper (13) are detachably connected by bolts.

5. The discharge structure of a disc filter according to claim 4, characterized in that: The scraper (13) is inclined and can guide the scraped filter cake into the cleaning tank (11).

6. The discharge structure of a disc filter according to claim 5, characterized in that: The bottom end of the push rod (17) is fixed with a rotating shaft (61), and a pulley (62) is rotatably connected to the surface of the rotating shaft (61). The rotating shaft (61) is located at the bottom of the support (21).

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