Sleeve valve

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly discloses a sleeve valve which comprises an outer cylinder, an inner cylinder, a screw rod and a driver, the inner cylinder is located in the outer cylinder and is in axial sliding fit with the outer cylinder, the driver can drive the screw rod to drive the inner cylinder to ascend and descend, and the screw rod is in sliding fit with the outer cylinder. The top of the inner cylinder is connected with a plurality of connecting rods, the connecting rods are distributed in the circumferential direction of the inner cylinder at intervals, a connecting frame is arranged above the inner cylinder, the connecting rods are all connected with the connecting frame, and one end of the screw is connected with the connecting frame. According to the utility model, the sludge discharge effect can be prevented from being influenced by the phenomenon of slag blockage during sludge discharge.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a sleeve valve. Background Technology

[0002] Secondary sedimentation tanks are a crucial part of wastewater treatment plants, used for solid-liquid separation of the mixed liquor after biological treatment, thereby removing suspended solids from the biological environment. During wastewater treatment, to discharge sludge from the bottom of the secondary sedimentation tank, a sludge discharge well is typically installed next to the tank. A sleeve valve is installed inside the sludge discharge well, utilizing the level difference between the inside and outside of the sleeve valve to discharge the sludge from the secondary sedimentation tank and pump it to a return pump station, achieving initial sludge-water separation.

[0003] like Figure 1 As shown, the existing sleeve valve consists of an inner cylinder and an outer cylinder. The top and bottom of the inner cylinder are welded with metal cross structures to prevent deformation of the inner cylinder. It is connected to the top cross by a screw. The height of the inner cylinder is adjusted by raising and lowering the screw through an external actuator, thereby forming a U-shaped tube structure with the secondary sedimentation tank to achieve the function of opening and closing the valve.

[0004] During use, it is often found that the sleeve valve gets stuck and clogged, resulting in poor sludge suction effect in the secondary settling tank. Research has found that because the sludge settled in the secondary settling tank contains flocculent matter and some large rope-like debris, when the settled sludge is sucked back to the return pump room by the sludge scraper through the sleeve valve, the flocculent debris easily gets stuck on the metal cross, causing the pipe diameter to decrease, thereby reducing the amount of sludge suctioned, and thus leading to the problem of stuck material and blockage. Utility Model Content

[0005] This utility model provides a sleeve valve, which aims to avoid sludge blockage during sludge discharge and thus prevent it from affecting the sludge discharge effect.

[0006] This utility model is achieved through the following technical solution: a sleeve valve, including an outer cylinder, an inner cylinder, a screw, and a driver. The inner cylinder is located inside the outer cylinder and is axially slidingly engaged with the outer cylinder. The driver can drive the screw to move the inner cylinder up and down. The top of the inner cylinder is connected to multiple connecting rods, which are distributed at intervals along the circumference of the inner cylinder. A connecting frame is provided above the inner cylinder, and the multiple connecting rods are all connected to the connecting frame. One end of the screw is connected to the connecting frame.

[0007] Compared with existing technologies, this solution has the following advantages and beneficial effects:

[0008] This solution eliminates the cross-shaped connection between the top and bottom of the inner cylinder in existing technologies, thus preventing clogging by flocculent waste, optimizing sludge suction, ensuring stable operation of the secondary sedimentation tank, and reducing the risk of sludge overflow.

[0009] In the scheme, a plurality of connecting rods are connected at the top of the inner cylinder, the connecting rods are connected with the connecting frame, the connecting frame is connected with the screw rod, so that the whole inner cylinder is driven to move up and down, the connecting frame and the connecting rod lift the position where the screw rod is connected with the inner cylinder by a certain distance, compared with the prior art of welding a cross on the inner side of the inner cylinder and connecting the screw rod with the cross on the inner cylinder, the arrangement of the connecting rod in the scheme does not interfere with the mud discharge of the inner cylinder, and the situation that the mud discharge effect is affected due to the blockage of the flocculation is effectively reduced.

[0010] Further, the top and bottom of the inner cylinder are respectively connected with a top fixing ring and a bottom fixing ring.

[0011] In the scheme, the top and bottom of the inner cylinder are respectively connected with a top fixing ring and a bottom fixing ring, which can enhance the strength of the inner cylinder and prevent water leakage due to deformation of the inner cylinder, and since the top fixing ring and the bottom fixing ring are annular, the situation of blockage due to the flocculation hanging on the bottom fixing ring and the top fixing ring can be avoided.

[0012] Further, the inner diameter of the top fixing ring and the bottom fixing ring is greater than or equal to the inner diameter of the inner cylinder.

[0013] Such arrangement can avoid the interference of the top fixing ring and the bottom fixing ring with the mud discharge inner diameter of the inner cylinder.

[0014] Further, the connecting rod is located outside the top fixing ring.

[0015] Such arrangement of the connecting rod outside the top fixing ring facilitates the fixed connection between the connecting rod and the inner cylinder and is more convenient to operate.

[0016] Further, the connecting frame comprises a connecting ring and a support, the upper portions of the plurality of connecting rods are connected with the connecting ring, the support is located inside the connecting ring and connected with the connecting ring, and one end of the screw rod is connected with the support.

[0017] The connecting frame in the scheme comprises a connecting ring and a support, the connecting ring is used to connect with the plurality of connecting rods, and the support is fixed with the connecting ring to facilitate the connection with the screw rod, so that the screw rod is indirectly connected with the inner cylinder.

[0018] Further, a connecting piece is fixedly connected in the center of the support, and the screw rod is connected with the connecting piece.

[0019] In the scheme, the connecting piece is fixed in the center of the support, so that when the screw rod is connected with the connecting piece, the tension can be more uniform, and the inner cylinder can move up and down more stably.

[0020] Further, the support is a cross, and four ends of the cross are connected with the connecting ring and / or the corresponding plurality of connecting rods.

[0021] In the scheme, the support is arranged as a cross structure, so that the strength and stability of the whole connecting frame can be improved.

[0022] Further, the connecting piece comprises two fixing plates, the two fixing plates are fixedly connected with the central two sides of the cross respectively, one end of the screw rod is connected with a fixing block, a connecting shaft is transversely arranged on the fixing block, and two ends of the connecting shaft are connected with the two fixing plates respectively.

[0023] In the scheme, the connecting piece comprises two fixing plates, the screw rod is connected with the fixing block, and the connecting shaft transversely arranged on the fixing block penetrates through the two fixing plates and is connected with the fixing plates, so that the screw rod and the connecting piece on the support can be connected.

[0024] Further, two ends of the connecting shaft are detachably connected with the two fixing plates respectively.

[0025] In this way, the inner cylinder and the screw rod can be detachably matched, and the inner cylinder and the screw rod can be separated, so that the maintenance or replacement is facilitated.

[0026] Further, the lower part of each of the two fixing plates is provided with an opening matched with the cross, and the openings of the two fixing plates are respectively inserted into the central two sides of the cross and are fixedly connected with the cross.

[0027] In the scheme, the opening arranged in the lower part of the fixing plate can be inserted into the cross, so that the contact area between the fixing plate and the cross can be increased when the fixing plate is welded on the cross, that is, the welding and fixing operation is facilitated, and the connection between them is more reliable and stable. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present application and constitute a part of the application, do not limit the embodiments of the present application. In the drawings:

[0029] Figure 1 It is a longitudinal sectional view of a sleeve valve in the prior art;

[0030] Figure 2 It is a longitudinal sectional view of a sleeve valve in the prior art;

[0031] Figure 3 It is a perspective view of an inner cylinder in a sleeve valve in the present application;

[0032] Figure 4 It is a perspective view of an inner cylinder in a sleeve valve in the present application;

[0033] Figure 5 For Figure 4 A local enlarged view at the middle of A.

[0034] Markings in the drawings and corresponding names of parts:

[0035] Outer cylinder 1, inner cylinder 2, cross 3, screw rod 4, driver 5, bottom fixing ring 6, top fixing ring 7, connecting rod 8, connecting ring 9, fixed plate 10, fixed block 11, connecting shaft 12, pin hole 13. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model more clearly and clearly, the utility model will be further described in detail below combined with examples and drawings, the schematic embodiment and its description of the utility model are only used to explain the utility model, and do not serve as the limitation of the utility model.

[0037] Referring to Figures 2-4 The application is further described in detail.

[0038] As Figure 2 Indicated, a sleeve valve, including outer cylinder 1, inner cylinder 2, screw rod 4 and driver 5, inner cylinder 2 is located in outer cylinder 1 and is axially slidingly fitted with outer cylinder 1, driver 5 can drive screw rod 4 to drive inner cylinder 2 to lift movement, driver 5 drives screw rod 4 to generate lifting movement for prior art, such as the structure of handle + screw rod + nut, rotates handle in a manual manner to drive nut to rotate along the thread on screw rod 4, thereby driving screw rod 4 lifting movement.

[0039] Combined Figure 2 And Figure 3 Indicated, the top of inner cylinder 2 is connected with four connecting rods 8, connecting rod 8 is stainless steel rod structure, four connecting rods 8 are evenly distributed along the circumference of inner cylinder 2, connecting frame is provided above inner cylinder 2, four connecting rods 8 are connected with connecting frame, specifically: the bottom of connecting rod 8 is welded and fixed with the top of inner cylinder 2, the upper portion of connecting rod 8 is welded and fixed with the outer side of connecting frame, one end of screw rod 4 is connected with connecting frame.

[0040] As an embodiment of the application, as Figure 2 And Figure 3 Indicated, the top and bottom of inner cylinder 2 are connected with top fixing ring 7 and bottom fixing ring 6 respectively, top fixing ring 7 and bottom fixing ring 6 are welded and fixed with the top of inner cylinder 2 and the bottom of inner cylinder 2 respectively, top fixing ring 7 and bottom fixing ring 6 are stainless steel ring structure, the inner diameter of top fixing ring 7 and bottom fixing ring 6 is greater than or equal to the inner diameter of inner cylinder 2.

[0041] As an embodiment of the present application, the connecting rods 8 are located outside the top fixing ring 7, and the bottom of the connecting rods 8 is welded and fixed to the top of the inner cylinder 2, and meanwhile one side of the connecting rods 8 is welded and fixed to the outside of the top fixing ring 7, so as to enhance the stability of the connecting rods 8 and the top fixing ring 7.

[0042] As an embodiment of the present application, the connecting frame comprises a connecting ring 9 and a support, and the upper parts of the four connecting rods 8 are connected to the connecting ring 9, and in this embodiment, the upper parts of the four connecting rods 8 are welded and fixed to the outside of the connecting ring 9, the connecting ring 9 is a stainless steel ring structure, the support is located inside the connecting ring 9 and is welded to the connecting ring 9, and one end of the screw rod 4 is connected to the support. Figure 4 As an embodiment of the present application, the central part of the support is fixedly connected with a connecting piece, and the screw rod 4 is fixedly connected or detachably connected with the connecting piece, so as to realize the connection between the screw rod 4 and the support, and specifically, the support is a cross 3, and the four end parts of the cross 3 are welded to the connecting ring 9 and / or the corresponding connecting rods 8, that is, the four end parts of the cross 3 can be welded and fixed to the inside of the connecting ring 9, or can be welded and fixed to the four corresponding connecting rods 8 respectively, or can be welded and fixed to the connecting ring 9 and the four corresponding connecting rods 8 simultaneously.

[0043] As an embodiment of the present application, the connecting frame comprises a connecting ring 9 and a support, and the upper parts of the four connecting rods 8 are connected to the connecting ring 9, and in this embodiment, the upper parts of the four connecting rods 8 are welded and fixed to the outside of the connecting ring 9, the connecting ring 9 is a stainless steel ring structure, the support is located inside the connecting ring 9 and is welded to the connecting ring 9, and one end of the screw rod 4 is connected to the support.

[0044] Figure 4 As an embodiment of the present application, the connecting frame comprises a connecting ring 9 and a support, and the upper parts of the four connecting rods 8 are connected to the connecting ring 9, and in this embodiment, the upper parts of the four connecting rods 8 are welded and fixed to the outside of the connecting ring 9, the connecting ring 9 is a stainless steel ring structure, the support is located inside the connecting ring 9 and is welded to the connecting ring 9, and one end of the screw rod 4 is connected to the support. Figure 5 Figure 5 As an embodiment of the present application, the connecting frame comprises a connecting ring 9 and a support, and the upper parts of the four connecting rods 8 are connected to the connecting ring 9, and in this embodiment, the upper parts of the four connecting rods 8 are welded and fixed to the outside of the connecting ring 9, the connecting ring 9 is a stainless steel ring structure, the support is located inside the connecting ring 9 and is welded to the connecting ring 9, and one end of the screw rod 4 is connected to the support.

[0045] As an embodiment of the present application, the connecting frame comprises a connecting ring 9 and a support, and the upper parts of the four connecting rods 8 are connected to the connecting ring 9, and in this embodiment, the upper parts of the four connecting rods 8 are welded and fixed to the outside of the connecting ring 9, the connecting ring 9 is a stainless steel ring structure, the support is located inside the connecting ring 9 and is welded to the connecting ring 9, and one end of the screw rod 4 is connected to the support. Figure 5 As an embodiment of the present application, the connecting frame comprises a connecting ring 9 and a support, and the upper parts of the four connecting rods 8 are connected to the connecting ring 9, and in this embodiment, the upper parts of the four connecting rods 8 are welded and fixed to the outside of the connecting ring 9, the connecting ring 9 is a stainless steel ring structure, the support is located inside the connecting ring 9 and is welded to the connecting ring 9, and one end of the screw rod 4 is connected to the support.

[0046] ​​The utility model discloses a top and bottom metal cross 3 of taking off prior art in inner tube 2, the top fixed ring 7 and bottom fixed ring 6 of the top and bottom part of the inner tube 2 top and bottom part Bie welding stainless steel ring are fixed, thereby can prevent the inner tube 2 deformation and water leakage.

[0047] The structure of the original screw rod 4 connecting the inner tube 2 mouth edge crossbar to lift is changed to the screw rod 4 connecting four connecting rods 8 welded on the top wall of the inner tube 2, the top of the connecting rod 8 is 20-40cm away from the cylinder mouth 20-40cm, which is similar to the pull horse type lifting, by removing the metal crossbar in the inner tube 2, the phenomenon that the flocculent garbage is blocked on the crossbar at the cylinder mouth of the inner tube can be effectively avoided, thereby the suction effect can reach the best, the stable operation of the secondary sedimentation tank is ensured, and the mud turning risk is reduced.

[0048] It is to be understood that the above description is illustrative of the application and not in limitation thereof. Numerous modifications and changes will become apparent to those skilled in the art. For example, the above description is directed to the preferred embodiments of the application. However, the application is capable of use in various other combinations, modifications, and environments and is capable of changes in the details and order of steps. Therefore, the scope of the application is indicated by the terminology in the following claims.

Claims

1. A sleeve valve comprising an outer cylinder, an inner cylinder, a screw rod and a driver, the inner cylinder being located within the outer cylinder and in axial sliding engagement therewith, the driver being capable of driving the screw rod to cause lifting movement of the inner cylinder, characterised in that, A plurality of connecting rods are connected to the top of the inner cylinder, the connecting rods are distributed along the circumference of the inner cylinder, a connecting frame is arranged above the inner cylinder, the connecting rods are connected to the connecting frame, and one end of the screw rod is connected to the connecting frame.

2. A sleeve valve according to claim 1, wherein The top and bottom of the inner cylinder are respectively connected to a top fixing ring and a bottom fixing ring.

3. A sleeve valve according to claim 2, wherein, The inner diameter of the top fixing ring and the bottom fixing ring is greater than or equal to the inner diameter of the inner cylinder.

4. A sleeve valve according to claim 2, wherein The connecting rods are located outside the top fixing ring.

5. A sleeve valve according to claim 1, wherein The connecting frame comprises a connecting ring and a support, the upper portions of the connecting rods are connected to the connecting ring, the support is located inside the connecting ring and is connected to the connecting ring, and one end of the screw rod is connected to the support.

6. A sleeve valve according to claim 5, wherein A connecting piece is fixedly connected to the center of the support, and the screw rod is connected to the connecting piece.

7. A sleeve valve according to claim 6, wherein The support is a cross, and the four ends of the cross are connected to the connecting ring and / or the corresponding connecting rods.

8. A sleeve valve according to claim 7, wherein, The connecting piece comprises two fixing plates, the two fixing plates are respectively fixedly connected to the two sides of the center of the cross, one end of the screw rod is connected to a fixing block, a connecting shaft is transversely arranged on the fixing block, and the two ends of the connecting shaft are respectively connected to the two fixing plates.

9. A sleeve valve according to claim 8, wherein, The two ends of the connecting shaft are respectively detachably connected to the two fixing plates.

10. A sleeve valve according to claim 8, wherein The lower portions of the two fixing plates are respectively provided with openings matched with the cross, and the openings of the two fixing plates are respectively inserted into the two sides of the center of the cross and are fixedly connected to the cross.

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