Sleeve valve

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sleeve valve which comprises an outer sleeve, an inner sleeve, a fixing frame, a driver and a transmission rod, the outer sleeve is installed in a sludge discharge well, the bottom end of the outer sleeve extends to the bottom of a secondary sedimentation tank, the sludge discharge well is arranged on the upper portion of the left end of the secondary sedimentation tank, and the inner sleeve is arranged on the upper portion of the outer sleeve. The top end of the inner sleeve is connected with the fixing frame, a sludge outlet is formed in the fixing frame, the driver is installed at the top end of the sludge discharge well, the transmission rod penetrates through the driver, the bottom end of the transmission rod is connected with the center of the top end of the fixing frame, the positioning assembly is arranged between the outer sleeve and the inner sleeve, and the inclined plate is arranged in the outer sleeve. The inclined plate is mounted at the bottom end of the outer sleeve; the mud discharging device is simple in structural design and high in mud discharging efficiency, the inner sleeve stably ascends and descends relative to the outer sleeve, and the inner sleeve and the fixing frame are convenient to assemble and disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sleeve valve. Background Art

[0002] The secondary sedimentation tank is a sedimentation tank where the sewage treatment plant receives wastewater for secondary treatment, separates the mixed liquid after biochemical treatment into solids and liquids, and removes biological suspended solids. In order to discharge the sludge at the bottom of the secondary sedimentation tank, a sludge well is usually set up beside the secondary sedimentation tank, and a sludge sleeve is set up in the sludge well. The sludge at the bottom of the secondary sedimentation tank is pressed out through the sludge sleeve by using the difference between the liquid level inside the sludge sleeve and the external liquid level, thereby achieving the sedimentation and separation effect.

[0003] At present, the existing sludge sleeve has the following defects: (1) The inner sleeve has poor stability during its up and down movement relative to the outer sleeve; (2) The area of ​​the water inlet at the bottom of the outer sleeve is limited, resulting in a limited contact area with the sludge, thereby affecting the sludge discharge efficiency; (3) The installation and disassembly between the transmission rod and the inner sleeve is relatively troublesome, which is not convenient for the later maintenance or replacement of the transmission rod and the inner sleeve. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a sleeve valve with a simple structural design, high mud discharge efficiency, stable lifting of the inner sleeve relative to the outer sleeve, and easy installation and disassembly between the inner sleeve and the fixing frame.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a sleeve valve, including an outer sleeve, an inner sleeve, a fixing frame, a driver and a transmission rod, the outer sleeve is installed in a mud discharge well, and its bottom end extends to the bottom of a secondary sedimentation tank, the mud discharge well is arranged at the upper left end of the secondary sedimentation tank, the inner sleeve is arranged in the upper part of the outer sleeve, and its top end is connected to the fixing frame, a mud outlet is opened on the fixing frame, the driver is installed at the top of the mud discharge well, the transmission rod passes through the driver, and its bottom end is connected to the top center of the fixing frame, and also includes a positioning assembly and an inclined plate, the positioning assembly is arranged between the outer sleeve and the inner sleeve, and the inclined plate is installed at the bottom end of the outer sleeve.

[0006] Furthermore, the positioning assembly includes a positioner and a spiral groove, the positioner is arranged at the top end of the outer sleeve, the spiral groove is opened on the outer peripheral wall of the inner sleeve, and the end of the positioner close to the inner sleeve extends into the spiral groove.

[0007] Furthermore, a sealing film is provided in the spiral groove.

[0008] Furthermore, the outer sleeve and the inner sleeve are both hollow cylindrical structures.

[0009] Furthermore, the fixed frame and the transmission rod are connected by a quick-release head, and the quick-release head includes a cylinder and an axial limit assembly. The bottom end of the cylinder is connected to the top center of the fixed frame, and a slot is opened in the upper center. The bottom end of the transmission rod is inserted into the slot and is positioned by the axial limit assembly.

[0010] Furthermore, the axial limit assembly includes an inner gear ring, a gear, a torsion spring, a block and a knob. The inner gear ring is arranged in an annular cavity provided in the cylinder body. There are several gears, which are respectively arranged in through holes opened in the circumferential wall of the slot. The gear is rotatably installed in the through hole through a rotating shaft. The inner gear ring is meshed with the gear. The torsion spring is respectively installed at both ends of the rotating shaft. The block is installed on the rim of the gear. The end of the block away from the gear extends out of the through hole and is inserted into the annular groove opened at the bottom of the transmission rod. The knob is sleeved in the middle part of the cylinder body and rotatably cooperates with the cylinder body. The inner circumferential wall of the knob extends into the annular cavity and is connected to the outer circumferential wall of the inner gear ring.

[0011] Furthermore, the number of the gears is three or four.

[0012] Furthermore, the outer peripheral wall of the knob is provided with anti-slip grooves.

[0013] Furthermore, the quick-release head also includes a circumferential limit assembly, which includes a cross ridge installed at the bottom of the slot. When the bottom end of the transmission rod is inserted into the slot, the cross ridge is embedded in the cross groove opened at the bottom end of the transmission rod.

[0014] The beneficial effects of the utility model are:

[0015] (1) The utility model guides and positions the lifting of the inner sleeve by setting a positioning assembly, thereby ensuring the stability of its up and down movement. Combined with the setting of the inclined plate, the contact area between the water inlet at the bottom of the outer sleeve and the sludge is increased, thereby improving the sludge discharge efficiency of the sludge outlet;

[0016] (2) The utility model makes the installation and disassembly between the fixing frame and the transmission rod very convenient by providing the quick-release head, thereby facilitating the later maintenance or replacement of the inner sleeve and the transmission rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0020] Figure 3It is a cross-sectional view of the quick-loading head in the utility model;

[0021] Figure 4 yes Figure 3 Enlarged view of middle part B;

[0022] Figure 5 It is a schematic diagram of the annular slot in the utility model;

[0023] Figure 6 It is a top view of the axial limit assembly in the utility model;

[0024] Figure 7 It is a top view of the cylinder in the utility model;

[0025] Figure 8 It is a bottom view of the transmission rod in the utility model.

[0026] In the figure: 10, outer sleeve; 20, inner sleeve; 30, fixing frame; 40, driver; 50, transmission rod; 51, annular groove; 52, cross groove; 60, mud discharge well; 70, secondary sedimentation tank; 80, positioning assembly; 81, positioner; 82, spiral groove; 90, inclined plate; 100, quick-release head; 110, cylinder; 111, slot; 112, annular cavity; 113, through hole; 120, axial limit assembly; 121, inner gear ring; 122, gear; 123, torsion spring; 124, block; 125, knob; 126, rotating shaft; 130, circumferential limit assembly; 131, cross convex ridge. DETAILED DESCRIPTION

[0027] Now the utility model is further described in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0028] Example 1

[0029] like Figure 1 and Figure 2As shown, a sleeve valve includes an outer sleeve 10, an inner sleeve 20, a fixing frame 30, a driver 40, a transmission rod 50, a positioning assembly 80 and an inclined plate 90. The outer sleeve 10 is installed in a mud discharge well 60, and its bottom end extends to the bottom of a secondary sedimentation tank 70. The mud discharge well 60 is arranged at the upper left end of the secondary sedimentation tank 70. The inner sleeve 20 is arranged in the upper part of the outer sleeve 10, and its top end is connected to the fixing frame 30. A mud outlet is provided on the fixing frame 30. The driver 40 is installed at the top of the mud discharge well 60. The transmission rod 50 passes through the driver 40, and its bottom end is connected to the top center of the fixing frame 30. The positioning assembly 80 is arranged between the outer sleeve 10 and the inner sleeve 20, and the inclined plate 90 is installed at the bottom end of the outer sleeve 10. By setting the positioning assembly 80, the lifting and lowering of the inner sleeve 20 is guided and positioned, thereby ensuring the stability of its up and down movement. Combined with the setting of the inclined plate 90, the contact area between the water inlet at the bottom of the outer sleeve 10 and the sludge is increased, thereby improving the sludge discharge efficiency of the sludge outlet. Specifically, the outer sleeve 10 and the inner sleeve 20 are both hollow cylindrical structures; the driver 40 is a prior art and will not be described in detail here; the transmission rod 50 is threaded.

[0030] like Figure 2 As shown, the positioning assembly 80 includes a positioner 81 and a spiral groove 82. The positioner 81 is disposed at the top end of the outer sleeve 10, and the spiral groove 82 is provided on the outer peripheral wall of the inner sleeve 20. The end of the positioner 81 close to the inner sleeve 20 extends into the spiral groove 82. When the driver 40 drives the transmission rod 50 to drive the inner sleeve 20 to rise, the interaction between the positioner 81 and the spiral groove 82 enables the inner sleeve 20 to rotate and rise smoothly.

[0031] In order to ensure good sealing between the outer sleeve 10 and the inner sleeve 20 and reduce wear, a sealing rubber sheet is provided in the spiral groove 82 , and the sealing rubber sheet contacts the inner wall of the outer sleeve 10 .

[0032] When the inner sleeve 20 rises to a liquid level higher than the water surface H, mud discharge stops; when the inner sleeve 20 descends to a liquid level lower than the water surface H, mud discharge starts, and the lower the height, the greater the water discharge.

[0033] Example 2

[0034] like Figure 3 As shown, this embodiment is provided with a quick-release head 100 on the basis of the embodiment 1, and the fixing frame 30 and the transmission rod 50 are connected via the quick-release head 100. The quick-release head 100 makes the installation and disassembly between the fixing frame 30 and the transmission rod 50 very convenient, so as to facilitate the later maintenance or replacement of the inner sleeve 20 and the transmission rod 50.

[0035] like Figure 3As shown, the quick-release head 100 includes a barrel 110 and an axial stopper assembly 120. The bottom end of the barrel 110 is connected to the top center of the fixing frame 30, and a slot 111 is provided at the top center thereof. The bottom end of the transmission rod 50 is inserted into the slot 111 and positioned by the axial stopper assembly 120. Specifically, the transmission rod 50 is interference fit with the slot 111.

[0036] like Figure 3-Figure 6 As shown, the axial limiting assembly 120 includes an inner gear ring 121, a gear 122, a torsion spring 123, a block 124 and a knob 125. The inner gear ring 121 is arranged in an annular cavity 112 arranged in the cylinder 110. There are a plurality of gears 122, which are respectively arranged in through holes 113 opened on the circumferential wall of the slot 111. The gear 122 is rotatably installed in the through hole 113 through a rotating shaft 126. The inner gear ring 121 is meshed with the gear 122. The torsion spring 123 is respectively installed at both ends of the rotating shaft 126. The block 124 is installed on the rim of the gear 122. The end of the block 124 away from the gear 122 extends out of the through hole 113 and is inserted into the annular groove 51 opened at the bottom of the transmission rod 50. The knob 125 is sleeved in the middle of the cylinder 110 and rotatably cooperates with the cylinder 110. The inner circumferential wall of the knob 125 extends into the annular cavity 112 and is connected to the outer circumferential wall of the inner gear ring 121. The end of the clamping block 124 away from the gear 122 is inserted into the annular clamping groove 51 to achieve axial positioning of the fixing frame 30 and the transmission rod 50. Specifically, there are three or four gears 122, which are evenly arranged along the circumference of the slot 111; the outer peripheral wall of the knob 125 is provided with anti-slip grooves to facilitate the rotation of the knob 125.

[0037] When the fixing frame 30 and the transmission rod 50 are connected, the knob 125 is turned to synchronously drive the inner ring gear 121 to rotate. Due to the meshing of the inner ring gear 121 and the gear 122, the gear 122 is driven to rotate until the block 124 retracts into the through hole 113, and then the bottom end of the transmission rod 50 is inserted into the slot 111, and finally the knob 125 is released. Under the action of the torsion spring 123, the gear 122 is driven to rotate in the opposite direction until the block 124 extends out of the through hole 113 and enters the annular slot 51; when the fixing frame 30 and the transmission rod 50 are separated, the knob 125 is turned until the block 124 retracts into the through hole 113, and then the transmission rod 50 is pulled out of the slot 111.

[0038] Example 3

[0039] like Figure 3 , Figure 7 and Figure 8As shown, this embodiment adds a circumferential limit assembly 130 on the basis of Embodiment 2, and the circumferential limit assembly 130 includes a cross rib 131, which is installed at the bottom of the slot 111. When the bottom end of the transmission rod 50 is inserted into the slot 111, the cross rib 131 is embedded in the cross groove 52 provided at the bottom end of the transmission rod 50. The cooperation between the cross rib 131 and the cross groove 52 prevents the transmission rod 50 from rotating circumferentially in the slot 111.

[0040] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A sleeve valve, comprising an outer sleeve (10), an inner sleeve (20), a fixing frame (30), a driver (40) and a transmission rod (50), wherein the outer sleeve (10) is installed in a mud discharge well (60), and its bottom end extends to the bottom of a secondary sedimentation tank (70), the mud discharge well (60) is arranged at the upper left end of the secondary sedimentation tank (70), the inner sleeve (20) is arranged in the upper part of the outer sleeve (10), and its top end is connected to the fixing frame (30), the fixing frame (30) is provided with a mud outlet, the driver (40) is installed at the top of the mud discharge well (60), the transmission rod (50) passes through the driver (40), and its bottom end is connected to the top center of the fixing frame (30), characterized in that: It also includes a positioning assembly (80) and an inclined plate (90), wherein the positioning assembly (80) is arranged between the outer sleeve (10) and the inner sleeve (20), and the inclined plate (90) is installed at the bottom end of the outer sleeve (10).

2. The sleeve valve according to claim 1, characterized in that: The positioning assembly (80) comprises a positioner (81) and a spiral groove (82); the positioner (81) is arranged at the top end of the outer sleeve (10); the spiral groove (82) is opened on the outer peripheral wall of the inner sleeve (20); the positioner (81) extends into the spiral groove (82) near the end of the inner sleeve (20).

3. The sleeve valve according to claim 2, characterized in that: A sealing film is arranged in the spiral groove (82).

4. The sleeve valve according to claim 1, characterized in that: The outer sleeve (10) and the inner sleeve (20) are both hollow cylindrical structures.

5. The sleeve valve according to claim 1, characterized in that: The fixing frame (30) and the transmission rod (50) are connected via a quick-release head (100). The quick-release head (100) comprises a barrel (110) and an axial limit assembly (120). The bottom end of the barrel (110) is connected to the top center of the fixing frame (30), and a slot (111) is provided at the top center of the barrel. The bottom end of the transmission rod (50) is inserted into the slot (111) and is positioned by the axial limit assembly (120).

6. The sleeve valve according to claim 5, characterized in that: The axial limiting assembly (120) comprises an inner gear ring (121), a gear (122), a torsion spring (123), a block (124) and a knob (125); the inner gear ring (121) is arranged in an annular cavity (112) arranged in the cylinder (110); the gears (122) are in a plurality and are respectively arranged in through holes (113) opened in the circumferential wall of the slot (111); the gears (122) are rotatably installed in the through holes (113) via a rotating shaft (126); the inner gear ring (121) meshes with the gears (122); The torsion spring (123) is respectively mounted on both ends of the rotating shaft (126); the clamping block (124) is mounted on the rim of the gear (122); the end of the clamping block (124) away from the gear (122) extends out of the through hole (113) and is inserted into an annular clamping groove (51) provided at the bottom of the transmission rod (50); the knob (125) is sleeved in the middle of the cylinder (110) and is rotatably matched with the cylinder (110); the inner peripheral wall of the knob (125) extends into the annular cavity (112) and is connected to the outer peripheral wall of the inner gear ring (121).

7. The sleeve valve according to claim 6, characterized in that: The number of the gears (122) is three or four.

8. The sleeve valve according to claim 6, characterized in that: The outer peripheral wall of the knob (125) is provided with anti-slip grooves.

9. The sleeve valve according to claim 5, characterized in that: The quick-release head (100) further comprises a circumferential limiting assembly (130), wherein the circumferential limiting assembly (130) comprises a cross ridge (131), wherein the cross ridge (131) is mounted at the bottom of the slot (111), and when the bottom end of the transmission rod (50) is inserted into the slot (111), the cross ridge (131) is embedded in a cross groove (52) provided at the bottom end of the transmission rod (50).

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