Flap valve for large filter tower

Abstract

A flap valve for a large filter tower comprises a flap support provided with a circular channel cavity; the turning plate shaft assembly is rotationally connected to the turning plate support, and a turning shaft passes through the circle center point of the circular channel cavity; the turning plate body comprises a left turning plate sheet body and a right turning plate sheet body; and the soft sealing ring is attached to the inner wall of the circular channel cavity, and the soft sealing ring can abut against the left side turning plate piece body and the right side turning plate piece body to form sealing fit with the left side turning plate piece body and the right side turning plate piece body. The left side and the right side of the turning plate shaft assembly are stressed evenly, so that the turning plate shaft assembly can be prevented from being locally stressed excessively, and the service life is prolonged; left and right parts can be opened simultaneously, the opening area is larger, and the fluid passing efficiency is improved; the opening angle of the turning plate body is more comprehensive, so that the passing requirement of irregular fluid can be effectively met, and the situation of fluid accumulation is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of valves in the chemical smelting industry, in particular to a flap valve for a large filtering tower. Background Art

[0002] The flap valve (also called a rotary valve) is a common type of valve used to control the flow of fluid in a piping system. It consists of a rotating disc (flap) that can rotate around the valve seat to control the flow of fluid. The flap valve is usually manually operated by rotating a handle or handwheel to control the position of the valve disc. When the valve disc is fully aligned with the valve seat, the valve is in the open state, allowing the fluid to pass freely. When the valve disc is rotated to a position perpendicular to the valve seat, the valve is closed, blocking the passage of fluid. One of the advantages of flap valves is that they are simple to operate and easy to maintain and repair. They are generally suitable for low-pressure and medium-pressure applications, such as domestic water supply systems, industrial pipelines, and some fluid processing systems. However, flap valves also have some limitations. Because the valve disc needs to rotate, they may have problems with liquid hammer (water hammer) when closing or opening quickly. In addition, they may not be suitable for high-pressure or high-temperature applications, because these conditions require more complex and high-pressure / high-temperature resistant valve designs. In general, flap valves are a common and practical type of valve that is suitable for some specific piping systems and fluid control needs. When selecting and using valves, the appropriate valve type should be considered based on specific application requirements and system conditions.

[0003] Prior art example 1, referring to patent document CN210196478U, discloses a heavy hammer flap valve, including a casing with upper and lower openings, a downward sealing cone bucket is installed at the upper opening of the casing, two opposite side walls of the casing are located outside the mouth of the sealing cone bucket, each is equipped with a seat bearing, a flip shaft is arranged between the seat bearings, a sealing flap that can completely cover the mouth of the sealing cone bucket is installed on the flip shaft, a flap swing arm is also fixed between the seat bearings, a counterweight block is mounted on the flap swing arm, a groove is opened at the valve body inlet of the sealing cone bucket, and rubber is filled in the groove to form a sealing strip; when the sealing flap is closed, the sealing flap can be tightly matched with the sealing strip at the joint surface. Through the utility model, in the case where substances such as tar and dust are bonded to the valve body inlet of the sealing cone bucket, the sealing strip can fit tightly with the sealing cone bucket, solving the problems of loose sealing, air leakage and vacuum caused by the hardened materials at the joint of the sealing surface in the prior art.

[0004] Prior art example 2, referring to patent document CN108775427B, discloses a micro-motion gravity flap valve assembly, a gravity flap valve and a feed pipe. It includes a rotating shaft, a counterweight structure and a valve plate assembly. The counterweight structure and the valve plate assembly are distributed on both radial sides of the rotating shaft. The valve plate assembly includes a valve plate frame and a valve plate. One end of the valve plate frame is fixedly connected to the rotating shaft. The valve plate is hinged to the valve plate frame, and its hinge position is located in the lower half of the valve plate. When the valve plate is in a closed state, its upper part fits the valve plate frame, and a distance is set between its lower part and the valve plate frame. The counterweight structure is fixedly connected to both ends of the rotating shaft. The present invention adopts a double lever structure, which can effectively eliminate the inertia of the material, thereby accurately controlling the opening of the valve plate and avoiding the valve plate from opening too large. The position of the counterweight block is adjustable. When the installation angle and material density are different, the sensitivity of the counterweight block can be adjusted by adjusting the position of the counterweight block on the counterweight rod. The valve plate frame and the rotating shaft are reliably connected by arranging grooves and protrusions on the valve plate frame and the rotating shaft.

[0005] The structures of Example 1 and Example 2 have many similarities, for example: 1. The rotating shafts of the flap valves are both located at the outermost ends, so during the flipping process, the pressure on the rotating shafts is very large, making the rotating shafts more susceptible to damage and breakage; 2. The opening position and direction of the flip valves are single, that is, the end away from the rotating shaft is opened first, but when the fluid in the channel flows irregularly, especially when its flow path is closer to the rotating shaft, it will lead to uneven flow and low flow efficiency; 3. There is a lack of effective sealing structure. Summary of the invention

[0006] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a flap valve for a large filter tower.

[0007] The utility model solves the technical problem by providing a flap valve for a large filter tower, comprising:

[0008] A flap bracket, which is annular and has a circular channel cavity;

[0009] A flap shaft assembly, which is rotatably connected to the flap bracket, and the flip shaft passes through the center point of the circular channel cavity;

[0010] The flap body comprises a left flap sheet and a right flap sheet, wherein the left flap sheet is fixedly connected to the left side of the flap shaft assembly, and the right flap sheet is fixedly connected to the right side of the flap shaft assembly; when the left flap sheet flips upward, the right flip sheet flips downward; when the left flap sheet flips downward, the right flip sheet flips upward;

[0011] A soft sealing ring is attached to the inner wall of the circular channel cavity, and the soft sealing ring can respectively abut against the left flap sheet and the right flap sheet to form a sealing fit.

[0012] A counterweight block is also provided on the flap body.

[0013] In a preferred embodiment of the utility model, a plurality of counterweight grooves are provided on the left flap body and the right flap body, and the plurality of counterweight grooves are gradually arranged from the inside to the outside, and the counterweight block can be set in any one or more of the counterweight grooves.

[0014] Furthermore, a magnet is fixedly provided at the bottom of the counterweight slot, the counterweight block is made of a magnetic material, and the magnet forms a magnetic connection with the counterweight block to adsorb the counterweight block in the counterweight slot.

[0015] Regarding the component connection method of the utility model, the left flap sheet and the right flap sheet are both welded to the flap shaft assembly;

[0016] It also includes a plurality of reinforcing plates, which are straddled on the left flap body, the flap shaft assembly and the right flap body and fixed by welding, and the reinforcing plates are distributed on the front and back sides of the flap body.

[0017] The specific composition of the flip shaft assembly is that the flip shaft assembly includes a sleeve, a rotating shaft body inserted into the sleeve from both ends, a bearing seat fixed on the outer wall of the flip bracket, and a bearing arranged in the bearing seat and sleeved on the rotating shaft body. Screw fasteners are inserted into both the sleeve and the rotating shaft body, and a nut is screwed on one end of the screw fastener.

[0018] Preferably, the rotating shaft body comprises a driving rotating shaft and a driven rotating shaft, the driving rotating shaft extends out of the flap bracket, and a spline groove is provided on the driving rotating shaft.

[0019] Furthermore, a plurality of lubrication grooves are provided on the inner wall of the spline groove, and the lubrication grooves are filled with lubricating grease.

[0020] In a preferred embodiment of the utility model, a sewage outlet is provided on the outer wall of the flap bracket, the sewage outlet is communicated with the circular channel cavity, and the sewage outlet is connected to a sewage discharge slide.

[0021] In the utility model, the upper and lower edges of the flap bracket extend outward to form fixed flanges, and fixed connection holes are provided on the fixed flanges.

[0022] The beneficial effects of the utility model are:

[0023] 1. The flap shaft assembly is arranged at a non-end position, preferably passing through the center point of the circular channel cavity, that is, the flap shaft assembly is actually arranged at the center position of the circular channel cavity, so that when the flap body is flipped, the left and right sides of the flap shaft assembly are subjected to balanced force, which can prevent the flap shaft assembly from being locally over-pressurized, thereby extending its service life.

[0024] Second, the flap body is composed of a left flap body and a right flap body, both of which can be opened at the same time (one upwards and the other downwards), with a larger opening area to improve fluid passing efficiency.

[0025] 3. The opening angle of the flap body is more comprehensive, so it can effectively meet the needs of irregular fluid passage and effectively prevent fluid accumulation.

[0026] Fourth, it has a soft sealing ring, which can simultaneously adhere to the left flap sheet and the right flap sheet to form a sealing fit when the flap body is not turned over, so as to play the role of blocking the circular channel cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the utility model in the forward direction (when not turned over).

[0028] Figure 2 It is a schematic diagram of the reverse structure of the utility model (when not turned over).

[0029] Figure 3 It is a schematic diagram of the structure of the utility model (counterclockwise flip).

[0030] Figure 4 It is a structural schematic diagram of the utility model (clockwise flip).

[0031] Figure 5 It is a structural explosion diagram of the utility model.

[0032] Figure 6 It is a cross-sectional view of the utility model.

[0033] Figure 7 yes Figure 6 Enlarged schematic diagram of part A.

[0034] Figure 8 It is a structural diagram of the second embodiment.

[0035] In the figure: 1. flap bracket; 11. circular channel cavity; 12. sewage outlet; 13. fixed flange; 131. fixed connecting hole; 2. flap shaft assembly; 21. bushing; 22. bearing seat; 23. bearing; 24. screw fastener; 25. nut; 26. shaft body; 261. active shaft; 2611. spline groove; 2612. lubrication groove; 2613. lubricating grease; 262. driven shaft; 3. flap body; 31. left flap sheet; 32. right flap sheet; 33. counterweight groove; 331. magnet; 4. soft sealing ring; 5. sewage slide; 6. counterweight block; 7. reinforcement plate. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments are only specific descriptions of the present invention, and their purpose is to allow those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limiting the present invention.

[0037] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Embodiment 1

[0040] Reference Figure 1 to Figure 7 , a flap valve for a large filter tower, comprising:

[0041] The flap bracket 1 is annular and has a circular channel cavity 11;

[0042] A flap shaft assembly 2, which is rotatably connected to the flap bracket 1, and the flip shaft passes through the center point of the circular channel cavity 11;

[0043] The flap body 3 includes a left flap sheet 31 and a right flap sheet 32. The left flap sheet 31 is fixedly connected to the left side of the flap shaft assembly 2, and the right flap sheet 32 ​​is fixedly connected to the right side of the flap shaft assembly 2. When the left flap sheet 31 flips upward, the right flip sheet flips downward; when the left flap sheet 31 flips downward, the right flip sheet flips upward.

[0044] The soft sealing ring 4 is attached to the inner wall of the circular channel cavity 11 , and the soft sealing ring 4 can respectively abut against the left flap sheet 31 and the right flap sheet 32 ​​to form a sealing fit.

[0045] The above content is the basic structural scheme of the utility model. Compared with the prior art, its distinguishing features and unique functions are at least as follows: 1. The flap shaft assembly 2 is arranged at a non-end position, preferably passing through the center point of the circular channel cavity 11, that is, the flap shaft assembly 2 is actually arranged at the center position of the circular channel cavity 11, so that when the flap body 3 is flipped, the left and right sides of the flap shaft assembly 2 are balanced, which can prevent the flap shaft assembly 2 from being locally over-pressed to extend the service life; 2. The flap body 3 is composed of a left flap sheet 31 and a right flap sheet 32, both of which can be opened at the same time (one upward and the other downward), and the opening area is larger to improve the fluid passing efficiency; 3. The opening angle of the flap body 3 is more comprehensive, so it can effectively meet the irregular fluid passing requirements and effectively prevent the occurrence of fluid accumulation; 4. It has a soft sealing ring 4, which can simultaneously fit with the left flap sheet 31 and the right flap sheet 32 ​​to form a sealing fit when the flap body 3 is not flipped, so as to play the role of blocking the circular channel cavity 11.

[0046] It is worth mentioning that in the preferred embodiment of the utility model, a sewage outlet 12 is provided on the outer wall of the flap bracket 1, the sewage outlet 12 is communicated with the circular channel cavity 11, and the sewage outlet 12 is connected to the sewage discharge chute 5. Therefore, during maintenance, the staff can clean the impurities accumulated on the circular channel cavity 11 (the flap body 3, the soft sealing ring 4) to the outside of the flap valve through the sewage outlet 12 and the sewage discharge chute 5, thereby keeping the interior clean and preventing blockage, and ensuring that the flap body 3 can be smoothly turned over and opened and closed.

[0047] In the present invention, the upper and lower edges of the flap bracket 1 extend outward to form a fixed flange 13, and a fixed connection hole 131 is provided on the fixed flange 13. Therefore, the flap bracket 1 can be smoothly installed on the large filter tower through the cooperation of the fastener and the fixed connection hole 131.

[0048] Preferably, one or more flap valves may be installed in a single large filter tower, depending on actual design requirements and is not particularly limited herein.

[0049] Embodiment 2

[0050] Based on the structure of the first embodiment, this embodiment provides more diverse structures and functions, specifically: Figure 8 The flap body 3 is also provided with a counterweight 6. With the support of the counterweight 6, the flap body 3 can be made more stable, preventing the flap body 3 from being opened by mistake when it is not working or the flow rate is not large.

[0051] More specifically, the left flap body 31 and the right flap body 32 are both provided with a plurality of counterweight grooves 33, which are gradually arranged from the inside to the outside, and the counterweight block 6 can be arranged in any one or more of the counterweight grooves 33. According to the size of each flap valve and the requirements of the working environment, different numbers of counterweight blocks 6 can be used, and the counterweight blocks 6 can also be placed in different counterweight grooves 33 to achieve different counterweight effects.

[0052] Furthermore, a magnet 331 is fixedly provided at the bottom of the counterweight slot 33, and the counterweight block 6 is made of a magnetic material. The magnet 331 forms a magnetic connection with the counterweight block 6 to adsorb the counterweight block 6 in the counterweight slot 33. The magnet 331 exerts a magnetic force on the counterweight block 6, so that the counterweight block 6 can be more firmly installed in the counterweight slot 33 without human operation, and can effectively prevent the counterweight block 6 from detaching from the counterweight slot 33 during the flipping process of the left flap sheet 31 and the right flap sheet 32.

[0053] Embodiment 3

[0054] Reference Figure 1 to Figure 5 In the present invention, the preferred connection mode of the components is that the left flap sheet 31 and the right flap sheet 32 ​​are both welded to the flap shaft assembly 2. At the same time, it also includes a plurality of reinforcing plates 7, which are arranged across the left flap sheet 31, the flap shaft assembly 2 and the right flap sheet 32 ​​and fixed by welding, and the reinforcing plates 7 are distributed on the front and back sides of the flap body 3. The setting of the reinforcing plates 7, on the one hand, plays a role of structural support and reinforcement, and on the other hand, the left flap sheet 31, the flap shaft assembly 2 and the right flap sheet 32 ​​can be connected together by the same reinforcing plate 7, thereby enhancing the connection strength between multiple components.

[0055] Embodiment 4

[0056] In this embodiment, the preferred composition of the flip shaft assembly is as follows: Figure 5 to Figure 7The flip shaft assembly includes a sleeve 21, a rotating shaft body 26 inserted into the sleeve 21 from both ends, a bearing seat 22 fixed on the outer wall of the flip bracket, and a bearing 23 arranged in the bearing seat 22 and sleeved on the rotating shaft body 26. The sleeve 21 and the rotating shaft body 26 are both penetrated with a screw fastener 24, and a nut 25 is screwed on one end of the screw fastener 24. The arrangement of the bearing seat 22 and the bearing 23 can support the rotation of the rotating shaft body 26, ensure that it can rotate in the correct position, and reduce friction and resistance to enable it to rotate smoothly; the arrangement of the sleeve 21 wraps the rotating shaft body 26, thereby playing a physical isolation and protection role; the arrangement of the screw fastener 24 and the nut 25 stably connects the sleeve 21 and the rotating shaft body 26 to prevent them from being separated from each other during use.

[0057] Preferably, the rotating shaft body 26 includes a driving rotating shaft 261 and a driven rotating shaft 262, wherein the driving rotating shaft 261 extends out of the flap bracket 1, and a spline groove 2611 is provided on the driving rotating shaft 261. During use, the spline groove 2611 can form a transmission match with an external power device to input power to the driving rotating shaft 261, and the rotation of the rotating shaft drives the driven rotating shaft 262 to flip together. Thus, the function of actively opening or closing the left flap sheet 31 and the right flap sheet 32 ​​can be realized.

[0058] Reference Figure 7 Furthermore, a plurality of lubrication grooves 2612 are provided on the inner wall of the spline groove 2611, and the lubrication grooves 2612 are filled with lubricating grease 2613. The provision of the lubricating grease 2613 forms a lubricating film between the spline groove 2611 and external parts to separate the moving parts, reduce friction and wear, and extend the stability of use and the life of the parts.

[0059] It is worth noting that other technical solutions of the present invention belong to the prior art and will not be described in detail.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A flap valve for a large filter tower, characterized in that: Included are: A flap support (1) which is annular and has a circular channel cavity (11); A flap shaft assembly (2) which is rotatably connected to the flap bracket (1), and the flip shaft passes through the center point of the circular channel cavity (11); The flap body (3) comprises a left flap sheet (31) and a right flap sheet (32), wherein the left flap sheet (31) is fixedly connected to the left side of the flap shaft assembly (2), and the right flap sheet (32) is fixedly connected to the right side of the flap shaft assembly (2); when the left flap sheet (31) flips upward, the right flap sheet flips downward; When the left flip plate body (31) flips downward, the right flip plate body flips upward; A soft sealing ring (4) is attached to the inner wall of the circular channel cavity (11), and the soft sealing ring (4) can respectively abut against the left flap sheet (31) and the right flap sheet (32) to form a sealing fit.

2. The flap valve for a large filter tower according to claim 1, characterized in that: A counterweight block (6) is also provided on the flap body (3).

3. The flap valve for a large filter tower according to claim 2, characterized in that: The left flap body (31) and the right flap body (32) are both provided with a plurality of counterweight grooves (33), the plurality of counterweight grooves (33) being gradually arranged from the inside to the outside, and the counterweight block (6) can be arranged in any one or more of the counterweight grooves (33).

4. The flap valve for a large filter tower according to claim 3, characterized in that: A magnet (331) is fixedly arranged at the bottom of the counterweight slot (33); the counterweight block (6) is made of a magnetic material; the magnet (331) and the counterweight block (6) form a magnetic connection so as to adsorb the counterweight block (6) into the counterweight slot (33).

5. The flap valve for a large filter tower according to claim 1, characterized in that: The left flap plate body (31) and the right flap plate body (32) are both welded to the flap shaft assembly (2); It also includes a plurality of reinforcing plates (7), wherein the reinforcing plates (7) are arranged across the left flap body (31), the flap shaft assembly (2) and the right flap body (32) and are fixed by welding, and the reinforcing plates (7) are distributed on the front and back sides of the flap body (3).

6. The flap valve for a large filter tower according to claim 1, characterized in that: The flap shaft assembly (2) comprises a shaft sleeve (21), a rotating shaft body (26) inserted into the shaft sleeve (21) from both ends, a bearing seat (22) fixed on the outer wall of the flip bracket, and a bearing (23) arranged in the bearing seat (22) and sleeved on the rotating shaft body (26); a screw fastener (24) is inserted into both the shaft sleeve (21) and the rotating shaft body (26), and a nut (25) is screwed onto one end of the screw fastener (24).

7. The flap valve for a large filter tower according to claim 6, characterized in that: The rotating shaft body (26) comprises a driving rotating shaft (261) and a driven rotating shaft (262); the driving rotating shaft (261) extends out of the flap bracket (1), and a spline groove (2611) is provided on the driving rotating shaft (261).

8. The flap valve for a large filter tower according to claim 7, characterized in that: A plurality of lubrication grooves (2612) are also provided on the inner wall of the spline groove (2611), and the lubrication grooves (2612) are filled with lubrication grease (2613).

9. The flap valve for a large filter tower according to claim 1, characterized in that: A sewage outlet (12) is provided on the outer wall of the flap bracket (1), the sewage outlet (12) is communicated with the circular channel cavity (11), and the sewage outlet (12) is connected to a sewage discharge chute (5).

10. The flap valve for a large filter tower according to claim 1, characterized in that: The upper and lower edges of the flap bracket (1) extend outward to form a fixed flange (13), and a fixed connection hole (131) is provided on the fixed flange (13).

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