Anti-blocking stop valve for sewage treatment

Abstract

The utility model discloses an anti-blocking stop valve for sewage treatment, which belongs to the technical field of stop valves and comprises a valve casing and a valve rod, a water inlet channel and a water outlet channel are arranged in the valve casing, a valve seat is fixedly mounted at the communication position between the water inlet channel and the water outlet channel, a valve core is fixedly mounted at the bottom end of the valve rod, and a valve rod is fixedly mounted at the bottom end of the valve core. The multiple cleaning assemblies are installed at the bottom of the valve element, when the valve rod rotates to drive the valve element to move downwards, the multiple cleaning assemblies at the bottom of the valve element can rotate and descend along with the valve rod, at the moment, the cleaning block can abut against the first sealing face on the valve seat first through the abutting face, and the cleaning block is cleaned through rotating friction; therefore, when the valve element and the valve seat are sealed, the first sealing face on the valve seat can be automatically cleaned through the cleaning assembly, the valve seat can be prevented from being blocked by dirt after being used for a long time, the stop valve does not need to be disassembled for cleaning, and use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, and more specifically to an anti-clogging stop valve for sewage treatment. Background Art

[0002] A stop valve is a valve used to control the flow of fluids. It is usually used to open, close or partially open a pipe to control the flow of fluids (such as liquids or gases). A stop valve can help regulate flow, prevent backflow, and stop or start fluid flow when needed. A stop valve for sewage treatment is a valve used to control and regulate the flow of fluids in a sewage treatment system. It is installed on a pipe and can be used to open, close or partially open a pipe to control the flow of sewage. Stop valves play an important role in sewage treatment systems. They can help regulate flow, prevent sewage backflow, and maintain and repair pipeline systems.

[0003] China Patent Authorization Announcement No.: CN219035586U provides a sewage stop valve, in which the bottom of the guide rod is located in the inner cavity of the valve seat, the circumscribed circle diameter of the bottom of the guide rod gradually decreases as the height of the guide rod decreases, a bracket is provided on the valve cover, a scale is provided on the bracket, a scale layer is provided on the scale, a height indicator plate is provided on the valve stem on one side of the scale, and the width of the height indicator plate gradually decreases along the direction from the valve stem to the scale at one end close to the scale. The acid corrosion resistance and wear resistance of the valve core and the valve seat are improved, thereby improving the durability of the stop valve applied to acid sulfite pulping process wastewater.

[0004] Since there are many impurities in sewage, dirt is easily attached to the valve seat of the stop valve after long-term use in the sewage treatment system. When there is a lot of dirt, not only will the seal between the valve core and the valve seat fail, but it is also easy to get blocked. The above scheme and the currently existing stop valves do not have corresponding valve seat cleaning devices. When blockage occurs, the entire stop valve needs to be dismantled and cleaned, which causes inconvenience in use.

[0005] Therefore, in view of the above problems, an anti-clogging stop valve for sewage treatment is proposed. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The utility model provides an anti-clogging stop valve for sewage treatment, which can improve the problems existing in the relevant technology: there are many impurities in the sewage, so after the stop valve is used in the sewage treatment system for a long time, the valve seat in the stop valve is easily attached with dirt. When blockage occurs, the whole stop valve needs to be dismantled and cleaned, which causes inconvenience in use.

[0008] 2. Technical solution

[0009] To solve the above problems, the utility model adopts the following technical solutions.

[0010] The embodiment of the present application provides an anti-clogging stop valve for sewage treatment, including a valve housing and a valve stem, wherein an inlet channel and an outlet channel are arranged inside the valve housing, a valve seat is fixedly installed at the connection point between the inlet channel and the outlet channel, a valve core is fixedly installed at the bottom end of the valve stem, a plurality of annularly distributed cleaning components are arranged at the bottom end of the valve core, a sealing surface one is provided on the inner side of the valve seat, a sealing surface two matching the sealing surface one is provided on the outer end of the valve core, the cleaning component comprises a cleaning block, a contact surface is provided on the outer end of the cleaning block, before the sealing surface two contacts the sealing surface one to form a seal, the cleaning block first cleans the surface of the sealing surface one by means of the contact and friction between the abutting surface and the sealing surface one.

[0011] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0012] A plurality of cleaning components are installed at the bottom of the valve core. When the valve stem drives the valve core to move downward by rotating, the plurality of cleaning components at the bottom of the valve core will also fall with its rotation. At this time, the cleaning block will first abut against the sealing surface on the valve seat through the abutting surface and clean it through rotating friction. Therefore, when the valve core and the valve seat are sealed, the sealing surface on the valve seat can be automatically cleaned by the cleaning component, which can prevent the valve seat from being clogged by dirt after long-term use. There is no need to disassemble the stop valve for cleaning, thereby improving the convenience of use.

[0013] In some embodiments, a flange is fixedly mounted on the top of the valve housing, the bottom end of the valve stem passes through the flange and extends into the interior of the valve housing, a threaded sleeve is fixedly mounted on the top of the flange, and the valve stem is threadedly connected to the threaded sleeve.

[0014] In some embodiments, a handwheel is fixedly connected to the top of the valve stem, a guide sleeve is fixedly installed on the top of the flange, and the valve stem is slidably connected to the guide sleeve.

[0015] In some embodiments, the cleaning component also includes a movable block, a slider is fixedly connected to the top of the movable block, a plurality of annular movable grooves are provided at the bottom of the valve core, and a plurality of sliding grooves matching the slider are provided on the inner sides of the plurality of movable grooves, and the slider is slidably connected to the sliding grooves.

[0016] In some embodiments, the cleaning block is made of rubber material, a clamping block is fixedly installed on the outer end of the cleaning block, the cleaning block is clamped with the movable block through the clamping block, a fixing groove is opened at the bottom end of the movable block, and a reset device is installed inside the fixing groove.

[0017] In some embodiments, the resetting device includes a connecting piece 1 and a connecting piece 2, wherein the connecting piece 1 is fixedly connected to the inner wall of the fixed groove, and the connecting piece 2 is fixedly connected to the inner wall of the movable groove.

[0018] In some embodiments, the resetting device also includes a guide rod and two spring plates, both of which are fixed between connecting plate one and connecting plate two, and the movable block drives the cleaning block to reset through the force of the spring plates. A guide groove is provided on the inner side of the fixed groove, one end of the guide rod is fixedly mounted on connecting plate two, and the other end of the guide rod passes through connecting plate one and is slidably connected to the guide groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the valve core and valve seat structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the bottom structure of the valve core of the utility model;

[0023] Figure 5 This is a schematic diagram of the cleaning component structure of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the reset device of the utility model.

[0025] Description of the numbers in the figure:

[0026] 1. Valve housing;

[0027] 2. Flange;

[0028] 3. Valve stem;

[0029] 4. Threaded sleeve;

[0030] 5. Hand wheel;

[0031] 6. Guide sleeve;

[0032] 7. Valve core;

[0033] 8. Valve seat;

[0034] 9. Cleaning assembly; 91. Movable block; 92. Cleaning block; 93. Abutment surface; 94. Block; 95. Sliding block; 96. Guide groove; 97. Fixed groove; 98. Reset device; 981. Connecting piece 1; 982. Connecting piece 2; 983. Spring piece; 984. Guide rod;

[0035] 10. Sealing surface 1;

[0036] 11. Activity slot;

[0037] 12. Chute;

[0038] 13. Sealing surface 2. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0040] See also Figure 1 - Figure 6 A blockage-proof stop valve for sewage treatment comprises a valve housing 1 and a valve stem 3. A water inlet channel and a water outlet channel are arranged inside the valve housing 1. A valve seat 8 is fixedly installed at the connection point between the water inlet channel and the water outlet channel. A valve core 7 is fixedly installed at the bottom end of the valve stem 3. A plurality of cleaning components 9 distributed in an annular manner are arranged at the bottom end of the valve core 7. A sealing surface 10 is arranged on the inner side of the valve seat 8. A sealing surface 2 13 matching the sealing surface 10 is arranged on the outer end of the valve core 7. The cleaning component 9 comprises a cleaning block 92. A contact surface 93 is arranged on the outer end of the cleaning block 92. Before the sealing surface 2 13 contacts the sealing surface 10 to form a seal, the cleaning block 92 first cleans the surface of the sealing surface 10 by contacting and rubbing the contact surface 93 with the sealing surface 10.

[0041] A flange 2 is fixedly mounted on the top of the valve housing 1, the bottom end of the valve stem 3 passes through the flange 2 and extends to the inside of the valve housing 1, a threaded sleeve 4 is fixedly mounted on the top of the flange 2, and the valve stem 3 is threadedly connected to the threaded sleeve 4.

[0042] A hand wheel 5 is fixedly connected to the top of the valve stem 3 , a guide sleeve 6 is fixedly installed on the top of the flange 2 , and the valve stem 3 is slidably connected to the guide sleeve 6 .

[0043] The stop valve in this scheme is used in sewage treatment systems. Compared with traditional stop valves, it is less likely to be blocked and can increase its service life. An inlet channel and an outlet channel are arranged inside the valve housing 1. Flanges for connecting pipes are fixed on the outside of the inlet channel and the outlet channel. At the same time, a valve seat 8 is fixed at the connection point between the inlet channel and the outlet channel, that is, inside the valve housing 1. A valve core 7 is fixedly installed at the bottom end of the valve stem 3. A sealing surface 2 13 is provided at the bottom of the valve core 7, and a sealing surface 1 10 is provided on the inner side of the valve seat 8. When the valve core 7 and the valve seat 8 are combined, the sealing surface 2 13 and the sealing surface 10 will abut against each other to form a seal, blocking the inlet channel and the outlet channel, thereby cutting off the flow. A flange 2 is installed on the top of the valve housing 1 by bolts, and a valve stem 3 penetrates the flange 2 and extends to the top of the valve seat 8, so that the valve core 7 and the valve seat 8 are coaxially arranged. A guide sleeve 6 and a threaded sleeve 4 are fixed on the top of the flange 2, respectively, wherein the threaded sleeve 4 is threadedly connected to the valve stem 3, and a handwheel 5 is fixed on the top of the valve stem 3. By turning the handwheel 5, the valve stem 3 can drive the valve core 7 to move up and down, and the guide sleeve 6 is penetrated by the valve stem 3 and slidably connected thereto, so as to play a role of limiting and guiding, thereby improving the stability of the valve stem 3 when rotating.

[0044] A plurality of cleaning components 9 are installed at the bottom of the valve core 7. When the valve stem 3 drives the valve core 7 to move downward by rotating, the plurality of cleaning components 9 at the bottom of the valve core 7 will also fall with its rotation. At this time, the cleaning block 92 will first abut against the sealing surface 10 on the valve seat 8 through the abutting surface 93, and clean it through rotational friction. At the same time, the cleaning component 9 will also squeeze the reset device 98 and retract into the movable groove 11 during the descending process until the cleaning block 92 abuts against the inner side wall of the sealing surface 10, and the valve core 7 abuts against the sealing surface 10 through the sealing surface 2 13 to form a seal. Therefore, when the valve core 7 and the valve seat 8 are sealed, the sealing surface 10 on the valve seat 8 can be automatically cleaned by the cleaning component 9 to prevent gaps when the sealing surface 10 and the sealing surface 2 13 are fitted to prevent leakage. At the same time, the valve seat 8 can be prevented from being clogged with dirt after long-term use. There is no need to disassemble the entire stop valve for cleaning, which reduces the frequency of maintenance and improves the convenience of use.

[0045] See also Figure 3-Figure 5 The cleaning component 9 also includes a movable block 91, a slider 95 is fixedly connected to the top of the movable block 91, a plurality of annular movable grooves 11 are provided at the bottom of the valve core 7, and a slide groove 12 matching the slider 95 is provided inside the plurality of movable grooves 11, and the slider 95 is slidably connected to the slide groove 12.

[0046] The cleaning block 92 is made of rubber material, and a clamping block 94 is fixedly installed on the outer end of the cleaning block 92. The cleaning block 92 is clamped with the movable block 91 through the clamping block 94. A fixing groove 97 is opened at the bottom end of the movable block 91, and a reset device 98 is installed inside the fixing groove 97.

[0047] The movable block 91 in this solution is mainly used to drive the abutting surface 93 to move. A clamping block 94 is fixed on the abutting surface 93, and a clamping groove is provided on the movable block 91, so that the cleaning block 92 can be detachably connected with the movable block 91. At the same time, the outer end of the cleaning block 92 is provided with an abutting surface 93 matching the sealing surface 10. The cleaning block 92 is made of rubber, which can reduce the wear of the sealing surface 10 during friction cleaning. A slider 95 is fixed on the top of the movable block 91, and a plurality of annularly distributed movable grooves 11 are provided at the bottom of the valve core 7. The movable block 91 is located in the movable groove 11. At the same time, a sliding groove 12 is provided on the inner wall of each movable groove 11. The movable block 91 is slidably connected with the sliding groove 12 through the slider 95, so that the movable block 91 can move in the movable groove 11. A fixed groove 97 is provided at the bottom of the movable block 91. The fixed groove 97 is mainly used to install a reset device 98. The reset device 98 is mainly used to reset the movable block 91.

[0048] In the static state, the cleaning block 92 on the movable block 91 is pushed by the reset device 98 to protrude from the outside of the valve core 7, and the cleaning component 9 is located below the sealing surface 2 13. Therefore, when the valve stem 3 drives the valve core 7 to rotate and descend, the abutting surface 93 on the cleaning block 92 will first abut against the sealing surface 10, and clean the dirt attached to its surface through rotation. When the valve core 7 continues to move downward, the movable block 91 will compress the reset device 98 to retract the cleaning block 92 into the movable groove 11. After being accommodated, the cleaning block 92 will abut against the inner wall of the valve seat 8, and the sealing surface 2 13 and the sealing surface 10 will abut and seal, so that before the valve core 7 and the valve seat 8 are sealed, the sealing surface 10 can be automatically cleaned by the cleaning component 9 to prevent it from being blocked.

[0049] See also Figure 5 and Figure 6 The reset device 98 includes a connecting piece 1 981 and a connecting piece 2 982 . The connecting piece 1 981 is fixedly connected to the inner wall of the fixed groove 97 , and the connecting piece 2 982 is fixedly connected to the inner wall of the movable groove 11 .

[0050] The reset device 98 also includes a guide rod 984 and two spring pieces 983. The two spring pieces 983 are fixed between the connecting piece 1 981 and the connecting piece 2 982. The movable block 91 drives the cleaning block 92 to reset through the force of the spring pieces 983. A guide groove 96 is provided on the inner side of the fixed groove 97. One end of the guide rod 984 is fixedly mounted on the connecting piece 2 982. The other end of the guide rod 984 passes through the connecting piece 1 981 and is slidably connected to the guide groove 96.

[0051] The reset device 98 in this scheme is mainly used to reset the movable block 91, wherein the connecting piece 1 981 is fixed on the inner side wall of the fixed groove 97, and the connecting piece 2 982 is fixed on the inner side wall of the movable groove 11, and two spring pieces 983 are fixed between the connecting piece 1 981 and the connecting piece 2 982. The reset device 98 is made of metal as a whole, so that the spring piece 983 has a certain elasticity, and the guide rod 984 is fixed on the outer end of the connecting piece 2 982, and the other end of the guide rod 984 is a connecting piece 1 981 that penetrates the connecting piece 1 It extends outward all the time, and a guide groove 96 is provided on the inner side of the fixed groove 97. The end of the guide rod 984 extending outward is slidably connected to the guide groove 96. The guide rod 984 mainly plays a guiding role. When the movable block 91 moves inward and compresses the two spring pieces 983 to make them bend, the guide rod 984 will follow the movement of the connecting piece 2 982 and slide into the guide groove 96 to prevent the connecting piece 2 982 from deflecting when being compressed, thereby improving its stability. The elastic force increased by the spring piece 983 can enable the movable block 91 to move outward or reset.

[0052] Working principle: When the device is used to close the valve to cut off the flow, it is first necessary to turn the hand wheel 5 so that the valve stem 3 drives the valve core 7 to rotate and move downward through the threaded connection with the threaded sleeve 4. At this time, the cleaning block 92 will first abut against the sealing surface 10 on the valve seat 8 through the abutting surface 93, and clean it through rotational friction until the cleaning block 92 abuts against the inner wall of the sealing surface 10 to form a seal, so that the sealing surface 10 on the valve seat 8 can be automatically cleaned by the cleaning component 9 to prevent leakage of the seal and prevent the valve seat 8 from being blocked. When the movable block 91 moves inward, it compresses the two spring pieces 983 to make them bend. When the valve is opened to open the channel, the movable block 91 can be reset by the action of the reset device 98.

Claims

1. An anti-clogging stop valve for sewage treatment, comprising a valve housing (1) and a valve stem (3), wherein a water inlet channel and a water outlet channel are arranged inside the valve housing (1), a valve seat (8) is fixedly installed at the connection point between the water inlet channel and the water outlet channel, and a valve core (7) is fixedly installed at the bottom end of the valve stem (3). Features: The bottom end of the valve core (7) is provided with a plurality of cleaning components (9) distributed in an annular manner, the inner side of the valve seat (8) is provided with a sealing surface 1 (10), and the outer end of the valve core (7) is provided with a sealing surface 2 (13) matching the sealing surface 1 (10); The cleaning assembly (9) comprises a cleaning block (92), the outer end of the cleaning block (92) being provided with an abutting surface (93), and before the second sealing surface (13) abuts against the first sealing surface (10) to form a seal, the cleaning block (92) first cleans the surface of the first sealing surface (10) by abutting and rubbing the abutting surface (93) against the first sealing surface (10).

2. The anti-clogging stop valve for sewage treatment according to claim 1, characterized in that: A flange (2) is fixedly mounted on the top of the valve housing (1); the bottom end of the valve stem (3) passes through the flange (2) and extends into the interior of the valve housing (1); a threaded sleeve (4) is fixedly mounted on the top of the flange (2); and the valve stem (3) is threadedly connected to the threaded sleeve (4).

3. The anti-clogging stop valve for sewage treatment according to claim 2 is characterized in that: A hand wheel (5) is fixedly connected to the top of the valve stem (3), a guide sleeve (6) is fixedly mounted on the top of the flange (2), and the valve stem (3) is slidably connected to the guide sleeve (6).

4. The anti-clogging stop valve for sewage treatment according to claim 1, characterized in that: The cleaning assembly (9) further comprises a movable block (91), the top end of the movable block (91) being fixedly connected to a slider (95), the bottom end of the valve core (7) being provided with a plurality of annularly distributed movable grooves (11), the inner sides of the plurality of movable grooves (11) being provided with sliding grooves (12) matching the slider (95), and the slider (95) being slidably connected to the sliding grooves (12).

5. The anti-clogging stop valve for sewage treatment according to claim 4, characterized in that: The cleaning block (92) is made of rubber material. A clamping block (94) is fixedly mounted on the outer end of the cleaning block (92). The cleaning block (92) is clamped with the movable block (91) via the clamping block (94). A fixing groove (97) is formed at the bottom end of the movable block (91). A reset device (98) is mounted inside the fixing groove (97).

6. The anti-clogging stop valve for sewage treatment according to claim 5, characterized in that: The resetting device (98) comprises a first connecting piece (981) and a second connecting piece (982), wherein the first connecting piece (981) is fixedly connected to the inner wall of the fixed groove (97), and the second connecting piece (982) is fixedly connected to the inner wall of the movable groove (11).

7. The anti-clogging stop valve for sewage treatment according to claim 6, characterized in that: The resetting device (98) further comprises a guide rod (984) and two spring sheets (983), wherein the two spring sheets (983) are fixed between the first connecting piece (981) and the second connecting piece (982), and the movable block (91) drives the cleaning block (92) to reset through the action of the spring sheets (983). A guide groove (96) is provided inside the fixing groove (97), and one end of the guide rod (984) is fixedly mounted on the second connecting piece (982), and the other end of the guide rod (984) passes through the first connecting piece (981) and is slidably connected to the guide groove (96).

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