Bottom-mounted back-locking filter head

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a bottom-mounted counter-locking filter head which comprises an upper filter tube, a lower filter tube and an inner tube, the upper filter tube and the lower filter tube are detachably connected to form a filter tube, the upper filter tube is detachably connected to a bottom plate, a limiting ring is arranged on the outer side of the upper filter tube, and the limiting ring abuts against the lower end of the bottom plate; an inner pipe is rotatably connected into the upper filter pipe, at least two clamping blocks are hinged to the outer side of the inner pipe, at least two clamping holes are formed in the side wall of the upper filter pipe, in the working state, the clamping blocks are clamped into the clamping holes, and the free ends of the clamping blocks stretch out of the clamping holes and abut against the upper end of the bottom plate. The filter pipe has the effects that the clamping block is arranged on the inner pipe, is matched with the clamping hole in the upper filter pipe and is propped against the upper end of the bottom, so that the filter pipe is prevented from falling off downwards during working, and the limiting ring is arranged on the upper filter pipe, so that the filter pipe is prevented from falling off upwards during working, and further, filter materials are prevented from leaking downwards during working.

Description

Technical Field

[0001] This utility model relates to wastewater treatment technology, specifically to a bottom-mounted anti-lock filter head. Background Technology

[0002] Wastewater treatment plant filters are an important component of the wastewater treatment process, primarily used to remove suspended solids, organic matter, microorganisms, and other impurities from wastewater to improve its quality. Filter heads are generally used to filter these impurities.

[0003] Currently, top-loading filter heads are prone to detaching upwards when pipeline pressure is too high, leading to filter media leakage. Reinstalling the filter head requires removing all filter media, which is a significant workload. While bottom-loading filter heads on the market can solve the reinstallation problem, the risk of filter head detachment and filter media leakage still exists. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the current filter head will fall off during operation, causing the filter media to leak down. The purpose is to provide a bottom-mounted reverse-locking filter head, which has a locking block on the inner tube that cooperates with the locking hole on the upper filter tube and abuts against the upper end of the bottom to prevent the upper filter tube from falling down during operation. A limiting ring is set on the upper filter tube to prevent the upper filter tube from falling up during operation, thereby avoiding the leakage of filter media during operation.

[0005] This utility model is achieved through the following technical solution:

[0006] A bottom-mounted locking filter head includes an upper filter tube, a lower filter tube, and an inner tube. The upper filter tube is detachably connected to the lower filter tube and is detachably connected to a base plate. A limit ring is provided on the outer side of the upper filter tube, and the limit ring abuts against the lower end of the base plate. The inner tube is rotatably connected inside the upper filter tube, and at least two locking blocks are hinged to the outer side of the inner tube. At least two locking holes are provided on the side wall of the upper filter tube. In the working state, the locking blocks are locked in the locking holes, and the free end of the locking block extends out of the locking hole and abuts against the upper end of the base plate.

[0007] The beneficial effects of this utility model are as follows: by setting a limiting ring on the outside of the upper filter tube and abutting against the lower end of the base plate, it is easy to prevent the upper filter tube from falling upward during operation. An inner tube is rotatably connected to the inside of the upper filter tube, and a locking block is set on the outer periphery of the inner tube to cooperate with a locking hole on the upper filter tube. The free end of the locking block extends out of the locking hole and abuts against the upper end of the base plate, which is also easy to prevent the upper filter tube from falling downward during operation, thereby avoiding leakage of filter material. Furthermore, the upper filter tube and the lower filter tube are detachably connected, facilitating the installation of the inner tube inside the upper filter tube.

[0008] In some embodiments, the locking blocks are evenly distributed in a circular pattern on the outer side of the inner tube. The inner side of the upper filter tube is provided with several arc-shaped guide grooves, which communicate with the corresponding locking holes. The side of the locking block away from the inner tube is located within the arc-shaped guide groove. In the working state, the locking block can slide along the corresponding arc-shaped guide groove into the locking hole. By providing arc-shaped guide grooves communicating with the corresponding locking holes on the inner side of the upper filter tube, the bottom of the side wall where the locking hole intersects with the arc-shaped guide groove is higher than the other side. This facilitates the locking block sliding along the corresponding arc-shaped guide groove and entering the corresponding locking hole when the inner tube rotates. Furthermore, placing the side of the locking block away from the inner tube within the arc-shaped guide groove prevents the locking block from stopping when it rotates away from the corresponding locking hole, ensuring that the locking block is completely within the arc-shaped guide groove at this point.

[0009] In some embodiments, the locking holes are evenly distributed in a circle on the sidewall of the upper filter tube, and the locking holes are inclined in the same direction as the corresponding locking blocks. By tilting the locking holes, it is easier for the locking blocks to smoothly enter the corresponding locking holes.

[0010] In some embodiments, the locking block is in the shape of an arc-shaped plate, and the thickness of the locking block gradually decreases along its length, with the side of the locking block away from the upper filter tube being arc-shaped. By gradually thinning the locking block, the thickness of the free end of the locking block is thinner than the thickness of the hinged end, which facilitates the locking block's smooth entry into the corresponding locking hole. Furthermore, the arc-shaped design of the side of the locking block away from the upper filter tube reduces the contact area between the locking block and the locking hole, thereby reducing the frictional force when the locking block enters the locking hole.

[0011] In some embodiments, the inner tube has several mounting slots on its sidewall, and the hinge end of the locking block is fitted with a resilient pin, with both ends of the resilient pin abutting against the sidewall of the corresponding mounting slot. By providing mounting slots on the sidewall of the inner tube, the hinge end of the locking block is easily connected to the inner tube via the resilient pin, thus enabling the locking block to be hinged onto the inner tube.

[0012] In some embodiments, the bottom of the upper filter tube is open, and several top filter holes are provided on the top and side walls of the upper filter tube. By making the bottom of the upper filter tube open, it is convenient to install the inner tube.

[0013] In some embodiments, the bottom inner side of the upper filter tube is provided with an internal thread, and the top of the lower filter tube is provided with a top external thread that engages with the internal thread. The upper filter tube and the lower filter tube are detachably connected by providing the threads.

[0014] In some embodiments, the outer side of the upper filter tube is provided with a plate connecting thread, which engages with the thread on the base plate. This allows the filter tube to be connected to the base plate.

[0015] In some embodiments, an upper limit ring is provided on the inner side of the upper filter tube, the free end of the upper limit ring extends towards the center of the upper filter tube, the inner diameter of the upper limit ring is larger than the inner diameter of the inner tube, the upper end of the inner tube is located at the lower end of the upper limit ring, and the top filter hole is located at the upper end of the upper limit ring. By providing an upper limit ring on the inner side of the upper filter tube, the top of the inner tube is limited, so that when the inner tube is in the upper limit position, the locking block and the locking hole are in the same plane, which facilitates the locking block to align and cooperate with the locking hole when the inner tube is rotated.

[0016] In some embodiments, the top of the lower filter tube is open, and several bottom filter holes are provided on the bottom and sidewalls of the lower filter tube. A positioning ring is provided on the inner side of the lower filter tube, with its free end extending towards the center of the lower filter tube. The inner diameter of the positioning ring is smaller than the inner diameter of the inner tube, the lower end of the inner tube is located at the upper end of the positioning ring, and the bottom filter holes are located at the lower end of the positioning ring. By providing a positioning ring on the inner side of the lower filter tube, it is convenient for the positioning ring to support the lower end of the lower filter tube after the upper filter tube is connected to the lower filter tube, and to prevent impurities from entering the arc-shaped guide groove. Furthermore, the inner diameter of the positioning ring is smaller than the inner diameter of the inner tube to prevent the inner diameter of the positioning ring from being too small and affecting the filtration effect.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] 1. A locking block is installed on the inner tube to cooperate with the locking hole on the upper filter tube and abut against the upper end of the bottom to prevent the filter tube from falling downward during operation. A limiting ring is installed on the upper filter tube to prevent the filter tube from falling upward during operation, thereby avoiding leakage of filter material during operation.

[0019] 2. By setting an arc-shaped guide groove on the inner side of the upper filter tube that communicates with the corresponding card hole, the bottom of the side wall where the card hole intersects with the arc-shaped guide groove is higher than the other side, which makes it easier for the card block to slide along the corresponding arc-shaped guide groove and enter the corresponding card hole when the inner tube rotates.

[0020] 3. By setting an upper limit ring on the inside of the upper filter tube, the top of the inner tube is limited. When the upper limit of the inner tube is reached, the locking block and the locking hole are in the same plane, which makes it convenient for the locking block to align and cooperate with the locking hole when the inner tube is rotated. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a central sectional view of the present invention;

[0023] Figure 2 This is a partial structural diagram of the present invention;

[0024] Figure 3 This utility model Figure 2 Cross-sectional view of AA;

[0025] Figure 4 This utility model Figure 1 A magnified view of section K in the middle.

[0026] The attached diagram shows the markings and corresponding component names:

[0027] Upper filter tube 10, limiting ring 12, internal thread 11, top filter hole 13, plate connection thread 15, locking hole 14, upper limit ring 16, lower filter tube 20, top external thread 21, positioning ring 22, bottom filter hole 23, base plate 30, inner tube 40, locking block 50, elastic pin 51, arc-shaped guide groove 52. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0029] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 limiting the scope of protection of this utility model.

[0031] The terms "first," "second," etc., used in this utility model are merely for clarity of description and are not intended to limit any order or emphasize importance. Furthermore, the term "connection" as used herein, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

[0032] Example

[0033] like Figures 1-4 As shown, this embodiment provides a bottom-mounted locking filter head, including an upper filter tube 10, a lower filter tube 20, and an inner tube 40. The upper filter tube 10 and the lower filter tube 20 are detachably connected to form a filter tube. The upper filter tube 10 is detachably connected to a base plate 30. A limiting ring 12 is provided on the outer side of the upper filter tube 10, and the limiting ring 12 abuts against the lower end of the base plate 30. The inner tube 40 is rotatably connected inside the upper filter tube 10. At least two locking blocks 50 are hinged to the outer side of the inner tube 40. At least two locking holes 14 are provided on the side wall of the upper filter tube 10. In the working state, the locking blocks 50 are locked in the locking holes 14, and the free end of the locking block 50 extends out of the locking hole 14 and abuts against the upper end of the base plate 30.

[0034] See Figures 1-4The locking blocks 50 are evenly distributed in a circular pattern on the outer side of the inner tube 40. Several arc-shaped guide grooves 52 are provided on the inner side of the upper filter tube 10. The arc-shaped guide grooves 52 communicate with the corresponding locking holes 14. The side of the locking block 50 away from the inner tube 40 is located in the arc-shaped guide groove 52. In the working state, the locking block 50 can slide along the corresponding arc-shaped guide groove 52 into the locking hole 14. By providing an arc-shaped guide groove 52 communicating with the corresponding card hole 14 on the inner side of the upper filter tube 10, the bottom of the side wall where the card hole 14 intersects with the arc-shaped guide groove 52 is higher than the other side. This facilitates the sliding of the card block 50 along the corresponding arc-shaped guide groove 52 and into the corresponding card hole 14 when the inner tube 40 rotates. It also places the side of the card block 50 away from the inner tube 40 within the arc-shaped guide groove 52, which helps prevent the card block 50 from rotating to the end of the arc-shaped guide groove 52 away from the card hole 14 when it rotates away from the corresponding card hole 14. At this time, the card block 50 is completely within the arc-shaped guide groove 52.

[0035] See Figure 1 and Figure 3 The locking holes 14 are evenly distributed in a circle on the side wall of the upper filter tube 10. The locking holes 14 are inclined, and their inclination direction is the same as that of the corresponding locking blocks. Specifically, the angle between the virtual axis of the locking hole 14 and the virtual extension line of the guide groove is 120° to 150°. By tilting the locking holes 14, the locking blocks 50 can easily enter the corresponding locking holes 14.

[0036] See Figure 1 and Figure 3 The locking block 50 is arc-shaped, and its thickness gradually decreases along its length. The side of the locking block 50 furthest from the upper filter tube 10 is also arc-shaped. By gradually thinning the locking block 50, the thickness of its free end is thinner than that of its hinged end, facilitating its smooth entry into the corresponding locking hole 14. The arc-shaped design of the side of the locking block 50 furthest from the upper filter tube 10 reduces the contact area between the locking block 50 and the locking hole 14, thereby reducing friction when the locking block 50 enters the locking hole 14.

[0037] See Figure 1 and Figure 3 The inner tube 40 has several mounting slots on its side wall, and the hinge end of the locking block 50 is fitted with an elastic pin 51. Both ends of the elastic pin 51 abut against the side wall of the corresponding mounting slot. By providing mounting slots on the side wall of the inner tube 40, the hinge end of the locking block 50 can be easily connected to the inner tube 40 via the elastic pin 51, thus enabling the locking block 50 to be hinged onto the inner tube 40.

[0038] See Figure 1 and Figure 3 The bottom of the upper filter tube 10 is open, and several top filter holes 13 are provided on the top and side walls of the upper filter tube 10. By making the bottom of the upper filter tube 10 open, it is convenient to install the inner tube 40.

[0039] See Figure 1 and Figure 3 The upper filter tube 10 has an internal thread 11 on its bottom inner side, and the lower filter tube 20 has a top external thread 21 that engages with the internal thread 11. The upper filter tube 10 and the lower filter tube 20 are detachably connected by the threads.

[0040] See Figure 1 The outer side of the upper filter tube 10 is provided with a plate connecting thread 15, which engages with the thread (internal thread) on the base plate 30. This allows the filter tube to be connected to the base plate 30.

[0041] See Figure 1 and Figure 3 An upper limit ring 16 is provided on the inner side of the upper filter tube 10. The free end of the upper limit ring 16 extends towards the center of the upper filter tube 10. The inner diameter of the upper limit ring 16 is larger than the inner diameter of the inner tube 40. The upper end of the inner tube 40 is located at the lower end of the upper limit ring 16, and the top filter hole 13 is located at the upper end of the upper limit ring 16. By providing an upper limit ring 16 on the inner side of the upper filter tube 10, the top of the inner tube 40 is limited. Thus, when the inner tube 40 is in the upper limit position, the locking block 50 and the locking hole 14 are in the same plane, which facilitates the alignment and engagement of the locking block 50 with the locking hole 14 when the inner tube 40 is rotated.

[0042] See Figure 1 and Figure 3 The top of the lower filter tube 20 is open. Several bottom filter holes 23 are provided on the bottom and side walls of the lower filter tube 20. A positioning ring 22 is provided on the inner side of the lower filter tube 20, with its free end extending towards the center of the lower filter tube 20. The inner diameter of the positioning ring 22 is smaller than the inner diameter of the inner tube 40. The lower end of the inner tube 40 is located at the upper end of the positioning ring 22, and the bottom filter holes 23 are located at the lower end of the positioning ring 22. By providing a positioning ring 22 on the inner side of the lower filter tube 20, it is convenient that after the upper filter tube 10 is connected to the lower filter tube 20, the positioning ring 22 can support the lower end of the lower filter tube 20 and prevent impurities from entering the arc-shaped guide groove 52. Furthermore, the inner diameter of the positioning ring 22 is smaller than the inner diameter of the inner tube 40 to prevent the inner diameter of the positioning ring 22 from being too small and affecting the filtration effect.

[0043] See Figure 1Specifically, annular grooves for installing O-rings can be provided at the top of the positioning ring 22 and the bottom of the inner tube 40. When the upper filter tube 10 and the lower filter tube 20 are screwed together, the O-rings will be pressed tightly to further prevent impurities from entering the arc-shaped guide groove 52.

[0044] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A bottom mounted lockable filter head, characterized in that, include: An upper filter tube and a lower filter tube are provided, the upper filter tube and the lower filter tube are detachably connected, the upper filter tube is detachably connected to the base plate, and a limit ring is provided on the outer side of the upper filter tube, the limit ring abutting against the lower end of the base plate; The inner tube is rotatably connected to the upper filter tube. At least two locking blocks are hinged to the outer side of the inner tube. At least two locking holes are provided on the side wall of the upper filter tube. In the working state, the locking blocks are locked in the locking holes, and the free end of the locking block extends out of the locking hole and abuts against the upper end of the base plate.

2. The inverted lockable filter head of claim 1, wherein, The card blocks are evenly distributed in a circle on the outside of the inner tube. Several arc-shaped guide grooves are provided on the inside of the upper filter tube. The arc-shaped guide grooves are connected to the corresponding card holes. The side of the card block away from the inner tube is located in the arc-shaped guide groove. In the working state, the card block can slide along the corresponding arc-shaped guide groove into the card hole.

3. The inverted lockable filter head of claim 2, wherein, The card holes are evenly distributed in a circle on the side wall of the upper filter tube, and the card holes are inclined and in the same direction as the corresponding card blocks.

4. The inverted lockable filter head of claim 2, wherein, The thickness of the card block gradually decreases along its length, the thickness of the free end of the card block is thinner than the thickness of the hinged end of the card block, and the side of the card block away from the upper filter tube is set to be arc-shaped.

5. The inverted lockable filter head of claim 2, wherein, The inner tube has several mounting grooves on its side wall, and the hinge end of the locking block is fitted with an elastic pin. The two ends of the elastic pin abut against the two side walls of the corresponding mounting groove.

6. The inverted lockable filter head of claim 1, wherein, The bottom of the upper filter tube is open, and several top filter holes are provided on the top and side walls of the upper filter tube.

7. The inverted lockable filter head of claim 1, wherein, The bottom inner side of the upper filter tube is provided with an internal thread, and the top of the lower filter tube is provided with a top external thread that engages with the internal thread.

8. The inverted lockable filter head of claim 1, wherein, The outer side of the upper filter tube is provided with a plate connection thread, which engages with the thread on the base plate.

9. The inverted lockable filter head of claim 6, wherein, An upper limit ring is provided on the inner side of the upper filter tube. The free end of the upper limit ring extends toward the center of the upper filter tube. The inner diameter of the upper limit ring is larger than the inner diameter of the inner tube. The upper end of the inner tube is located at the lower end of the upper limit ring. The top filter hole is located at the upper end of the upper limit ring.

10. The inverted lock carafe of any one of claims 1-9, wherein, The top of the lower filter tube is open, and several bottom filter holes are provided on the bottom and side walls of the lower filter tube. A positioning ring is provided on the inner side of the lower filter tube, and the free end of the positioning ring extends towards the center of the lower filter tube. The inner diameter of the positioning ring is smaller than the inner diameter of the inner tube. The lower end of the inner tube is located at the upper end of the positioning ring, and the bottom filter holes are located at the lower end of the positioning ring.

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