Groove type liquid distributor easy to clean

Abstract

The utility model discloses an easy-to-clean groove type liquid distributor, and relates to the technical field of groove type liquid distributors, the easy-to-clean groove type liquid distributor comprises an outer shell, a secondary groove is arranged at the middle lower part of an inner cavity of the outer shell, a filter groove is arranged at the upper part of the secondary groove, a primary groove is arranged at the upper part of the filter groove, and two outer vertical rods which are mutually symmetrical and have the same structure are fixedly arranged at the two sides of the inner cavity of the outer shell; outer T-shaped sliding grooves of the same structure are formed in the middles of the two outer vertical rods, a plurality of lifting mechanisms of the same structure and installation mode are arranged on one sides of the two outer T-shaped sliding grooves, inner vertical rods are arranged on the upper portions of the outer vertical rods in an inserted mode, lower transverse sliding grooves and upper transverse sliding grooves are formed in the two sides of the upper portions of the inner vertical rods respectively, and the lower transverse sliding grooves and the upper transverse sliding grooves are located on the same axis. According to the invention, the problems that the distributor needs to be disassembled by consuming relatively large pneumatic force and is inconvenient to mount are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of slot type liquid distributors, in particular to an easy-to-clean slot type liquid distributor. BACKGROUND

[0002] In order to reduce the amplification effect caused by poor liquid distribution and fully develop the efficiency of the packing, a liquid distributor must be installed in the packing tower to uniformly distribute the liquid at the top of the packing layer. The quality of the initial liquid distribution not only affects the mass transfer efficiency of the packing, but also affects the operation flexibility of the packing. Therefore, the liquid distributor is a very critical internal part in the packing tower.

[0003] For example, a kind of easy-to-clean slot type liquid distributor disclosed in Chinese patent publication No. CN202020997876.9 releases the clamping foot by pulling the pull rod through the pull ring, so that the mounting seat, the leakage plate, the first-stage slot body and the second-stage slot body are in a movable state to facilitate lifting out for cleaning. However, this method requires a lot of effort to lift out the first-stage slot body, the second-stage slot body and other structures each time for cleaning, and it is also necessary to lift them in for installation after cleaning. Furthermore, it is not very convenient to align and fix the components during installation. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the problem of requiring a lot of effort to disassemble and install the distributor, the present application provides an easy-to-clean slot type liquid distributor.

[0005] The easy-to-clean slot type liquid distributor provided by the present application adopts the following technical solution:

[0006] An easy-to-clean slot type liquid distributor includes an outer shell, a second-stage slot is arranged in the lower part of the inner cavity of the outer shell, a filter slot is arranged in the upper part of the second-stage slot, a first-stage slot is arranged in the upper part of the filter slot, two outer vertical rods that are symmetrical to each other and have the same structure are fixedly arranged on both sides of the inner cavity of the outer shell, outer T-shaped sliding grooves that have the same structure are arranged in the middle parts of the two outer vertical rods, and lifting mechanisms that have the same structure and installation mode are arranged on one side of the two outer T-shaped sliding grooves.

[0007] The lifting mechanism includes a first spring fixedly arranged in the inner cavity of the outer T-shaped sliding groove, a lower hanging plate is arranged at the upper part of the first spring, a connecting horizontal rod is fixedly arranged at the upper part of the lower hanging plate, two trapezoidal blocks that are symmetrical to each other and have the same structure are slidingly arranged on both sides of one end of the connecting horizontal rod, an upper triangular block fixedly arranged on the side wall of the outer vertical rod is arranged at the upper part of the trapezoidal block, a lower triangular block slidingly arranged on the side wall of the outer vertical rod is arranged at the lower part of the trapezoidal block, and a pulley that is in sliding and limiting relationship with the inner cavity of the outer T-shaped sliding groove is fixedly arranged on one side of the connecting horizontal rod.

[0008] The outer vertical rod upper part is provided with an inner vertical rod, and the inner vertical rod upper part is provided with a lower horizontal sliding groove and an upper horizontal sliding groove on both sides.

[0009] By adopting the above technical scheme, the several lifting mechanisms can be connected with the secondary tank, the filtering tank and the primary tank respectively, and are quickly separated with the help of the outer vertical rod and the first spring, and are moved to opposite directions to be cleaned under the action of the upper horizontal sliding groove and the lower horizontal sliding groove, so that the distributor internal structure can be cleaned without much effort, and the disassembly and assembly are very simple and convenient.

[0010] Preferably, the lifting mechanism further comprises a second spring fixed in the middle of one side surface of the trapezoidal block, and the second spring is fixed away from one end of the trapezoidal block in the inner cavity of one end of the connecting horizontal rod located in the outer T-shaped sliding groove.

[0011] By adopting the above technical scheme, the second spring can help the trapezoidal block to freely stretch and retract at one end of the connecting horizontal rod.

[0012] Preferably, the third spring is arranged in the inner cavity of one side of the outer T-shaped sliding groove of the lower hanging plate, and the third spring is fixed at both ends with a limiting horizontal plate slidingly arranged in the inner cavity of one end of the outer T-shaped sliding groove of the lower hanging plate.

[0013] By adopting the above technical scheme, the limiting horizontal plate can freely stretch and retract in the inner cavity of the lower hanging plate with the help of the third spring.

[0014] Preferably, the lower triangular block is slidingly arranged on one side of the outer vertical rod with a T-shaped limiting groove opened on the side wall of the outer vertical rod.

[0015] By adopting the above technical scheme, the T-shaped limiting groove can limit the movement range of the lower triangular block, so as to better help the trapezoidal block to be separated.

[0016] Preferably, the connecting horizontal rod upper part is abutted with a supporting plate slidingly connected with the opening side wall of the outer T-shaped sliding groove, and the supporting plate lower end is provided with two symmetrical sliding blocks with the same structure on both sides, and the sliding blocks are respectively arranged in vertical sliding grooves on both sides of the opening side wall of the outer T-shaped sliding groove.

[0017] By adopting the above technical scheme, the inner cavity of the supporting plate is connected with the first spring for assisting the release of the filtering tank and the primary tank, and the sliding block and the vertical sliding groove can better slide and limit the supporting plate.

[0018] Preferably, the inner vertical rod is provided with two symmetrical and identical limiting grooves on both sides of the lower horizontal sliding groove lower part, and the limiting groove inner cavity is clamped and limited with the limiting horizontal plate.

[0019] By adopting the technical scheme, the limiting groove and the limiting transverse plate are limited by mutual clamping, the lifting mechanism at the lowermost part and the secondary groove are limited, and the secondary groove is prevented from falling downward.

[0020] Preferably, the outer vertical rod is provided with an inner T-shaped sliding groove in communication with the inner cavity of the outer T-shaped sliding groove, and the side wall of the inner cavity of the inner T-shaped sliding groove and the outer surface of the inner vertical rod slide and limit each other.

[0021] By adopting the technical scheme, the outer T-shaped sliding groove can be limited by mutual clamping with the inner T-shaped sliding groove, and the lower transverse sliding groove and the upper transverse sliding groove are supported.

[0022] Preferably, the plurality of lifting mechanisms are vertically arranged and respectively fixedly connected with the secondary groove, the filtering groove and the primary groove.

[0023] By adopting the technical scheme, the lifting mechanism can push the secondary groove, the filtering groove and the primary groove out of the inner cavity of the outer shell one by one.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] By the cooperation of the lifting mechanism, the outer vertical rod, the lower transverse sliding groove and the upper transverse sliding groove, the secondary groove, the filtering groove and the primary groove can be individually disassembled and cleaned, and under the action of the outer vertical rod, the lower transverse sliding groove and the upper transverse sliding groove, the secondary groove, the filtering groove and the primary groove can be respectively located at different positions to facilitate the cleaning of the staff. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a front view of the whole application;

[0027] Figure 2 It is a cross-sectional view of the internal structure of the application;

[0028] Figure 3 It is a position diagram of the lifting mechanism of the application;

[0029] Figure 4 It is a structure diagram of the whole lifting mechanism of the application;

[0030] Figure 5 It is an exploded view of the lifting mechanism of the application;

[0031] Figure 6 It is an enlarged view of the lower transverse sliding groove and the upper transverse sliding groove of the application.

[0032] Reference signs: 1, outer shell; 2, secondary groove; 3, filtering groove; 4, primary groove; 5, outer vertical rod; 51, outer T-shaped sliding groove; 52, inner T-shaped sliding groove; 53, inner vertical rod;

[0033] 6, lifting mechanism; 61, first spring; 62, connecting crossbar; 63, pulley; 64, lower triangular block; 65, upper triangular block; 66, trapezoidal block; 67, second spring; 68, lower hanging plate; 69, third spring; 610, limiting cross plate; 611, T-shaped limiting groove;

[0034] 7, support plate; 8, sliding block; 9, vertical sliding groove; 10, lower horizontal sliding groove; 11, upper horizontal sliding groove; 12, limiting groove. DETAILED DESCRIPTION

[0035] The following will be described in detail with reference to the accompanying drawings. Figure 1 - Figure 6 The application is further described in detail.

[0036] The application discloses an easy-to-clean slot type liquid distributor.

[0037] Reference Figure 1 - Figure 4 , Figure 6 An easy-to-clean slot type liquid distributor comprises an outer shell 1, a secondary slot 2 arranged at the lower part of the inner cavity of the outer shell 1, a filter slot 3 arranged at the upper part of the secondary slot 2, a primary slot 4 arranged at the upper part of the filter slot 3, and a plurality of connecting crossbars 62 fixedly connected to the two sides of the secondary slot 2, the filter slot 3 and the primary slot 4. Two outer vertical rods 5 are fixedly arranged on the two side walls of the inner cavity of the outer shell 1, and the two outer vertical rods 5 are arranged symmetrically and identically in structure. An outer T-shaped sliding groove 51 is formed in the middle part of each of the two outer vertical rods 5, and the two outer T-shaped sliding grooves 51 are identical in structure and symmetrically arranged. An inner T-shaped sliding groove 52 is arranged at the upper part of each of the two outer vertical rods 5, and the inner cavity of the inner T-shaped sliding groove 52 is in communication with the inner cavity of the outer T-shaped sliding groove 51, and the surfaces of the two inner cavities are smooth. An inner vertical rod 53 is slidingly arranged on the side wall of the inner cavity of the inner T-shaped sliding groove 52, and the insertion of the inner vertical rod 53 into the inner T-shaped sliding groove 52 can limit the inner T-shaped sliding groove 52 relative to the inner vertical rod 53.

[0038] Reference Figure 1 - Figure 4 , Figure 6 A lower horizontal sliding groove 10 is arranged at one side of the upper part of the inner vertical rod 53. An upper horizontal sliding groove 11 is arranged at the upper end of the inner vertical rod 53 opposite to the direction of the lower horizontal sliding groove 10. The lower horizontal sliding groove 10 and the upper horizontal sliding groove 11 are not on the same horizontal line but on the same axis. Two limiting grooves 12 are formed in the lower part of the two side walls of the inner vertical rod 53, and the two limiting grooves 12 are symmetrically arranged and identical in structure. The inner cavity surface of the limiting groove 12 can be fitted with the outer surface of the limiting cross plate 610 and can be limited by mutual clamping.

[0039] The length of the outer stand 5 is consistent with the height of the outer shell 1, and the length of the inner T-shaped sliding groove 52 is one-third of the length of the outer stand 5, so that when the filter tank 3 and the first-stage tank 4 are respectively located in the upper horizontal sliding groove 11 and the lower horizontal sliding groove 10, the inner stand 53 cannot be broken due to gravity, and the inner stand 53 and the inner T-shaped sliding groove 52 can be quickly disassembled, the inner stand 53 is inserted into the inner T-shaped sliding groove 52 when cleaning is needed, the inner stand 53 is pulled out of the inner T-shaped sliding groove 52 after cleaning, thereby reducing the area occupied by the inner stand 53, the lower horizontal sliding groove 10 and the upper horizontal sliding groove 11, and the lower horizontal sliding groove 10 and the upper horizontal sliding groove 11 can respectively separate the filter tank 3 and the first-stage tank 4 to two sides, and the limiting groove 12 and the limiting horizontal plate 610 can limit each other to suspend the second-stage tank 2 in the inner T-shaped sliding groove 52, that is, the middle position of the filter tank 3 and the first-stage tank 4, so that the staff can clean some corners of the second-stage tank 2, the filter tank 3 and the first-stage tank 4, and quickly install the second-stage tank 2, the filter tank 3 and the first-stage tank 4 back to the original position after cleaning, thereby reducing the cleaning time and improving the work efficiency.

[0040] Referring to Figure 2 , Figure 4 - Figure 6 A plurality of lifting mechanisms 6 are arranged on the opposite side of the two outer T-shaped sliding grooves 51, and the plurality of lifting mechanisms 6 are arranged longitudinally, and the structure and installation mode of the plurality of lifting mechanisms 6 are the same, and the lifting mechanism 6 comprises a first spring 61 fixedly arranged at the bottom of the inner cavity of the outer T-shaped sliding groove 51, and the end of the first spring 61 away from the bottom surface of the outer T-shaped sliding groove 51 is arranged in abutment with the lower hanging plate 68, and the lower hanging plate 68 is provided with a flat plate penetrating the inner cavity on one side of the outer T-shaped sliding groove 51, and the inner cavity of the flat plate is penetrated by a third spring 69, and the two ends of the third spring 69 are fixedly connected with the limiting horizontal plate 610, and the opposite side of the two limiting horizontal plates 610 is in sliding connection with the inner cavity surface of the flat plate at one end of the outer T-shaped sliding groove 51 of the lower hanging plate 68, so that the limiting horizontal plate 610 can be contracted in the inner cavity of the flat plate on one side of the lower hanging plate 68 under the extrusion of the two side walls of the outer T-shaped sliding groove 51, and can be pushed out by the third spring 69 when being in abutment with the limiting groove 12, thereby realizing clamping limiting.

[0041] Referring to Figure 2 , Figure 4 - Figure 6And the upper surface of the lower hanging plate 68 is fixedly connected with the lower surface of the connecting cross rod 62 located at one end of the outer T-shaped sliding groove 51, and a through groove is formed on the side wall of the connecting cross rod 62 located at one end of the outer vertical rod 5, and two trapezoidal blocks 66 with downward inclined surfaces are slidably arranged in the through groove of the connecting cross rod 62, and the two trapezoidal blocks 66 are symmetrical to each other and have the same structure, a second spring 67 is fixedly arranged on the middle of the opposite side surface of the two trapezoidal blocks 66, and the second spring 67 is located in the middle of the inner cavity of the connecting cross rod 62, an upper triangular block 65 with an upward inclined surface is arranged in abutment on the upper part of the trapezoidal block 66, and the upper triangular block 65 is fixedly connected with the side wall of the outer vertical rod 5 located at one side of the connecting cross rod 62, and a lower triangular block 64 with a downward inclined surface is arranged in abutment on the lower part of the trapezoidal block 66, and the lower triangular block 64 is slidably arranged and limited with the T-shaped limiting groove 611 formed on the side wall of the outer vertical rod 5 located at one side of the connecting cross rod 62, so that when the trapezoidal block 66 moves downward, it abuts against the upper triangular block 65, and the second spring 67 is extruded by the upper triangular block 65 and retracts into the through groove formed at one end of the connecting cross rod 62.

[0042] With reference to Figure 2 , Figure 4 - Figure 6 A pulley 63 is fixedly arranged on one side of the connecting cross rod 62 located at the outer T-shaped sliding groove 51, and the pulley 63 is slidably arranged and limited with the inner cavity of the outer T-shaped sliding groove 51, the lower surface of the support plate 7 is arranged in abutment on the upper surface of the connecting cross rod 62 located at one side of the outer T-shaped sliding groove 51, and the side walls of the support plate 7 in the same direction as the second spring 67 are slidably arranged with the opening side walls of the outer T-shaped sliding groove 51 located at one side of the connecting cross rod 62, and the lower ends of the support plate 7 are fixedly provided with two sliding blocks 8, and the two sliding blocks 8 are symmetrical to each other and have the same structure, the outer surfaces of the sliding blocks 8 are slidably arranged and limited with the vertical sliding grooves 9 formed on the opening side walls of the outer T-shaped sliding groove 51, and the surfaces of the vertical sliding grooves 9 and the surfaces of the sliding blocks 8 are smooth, so that the support plate 7 can increase the sliding effect in the inner cavity of the outer T-shaped sliding groove 51.

[0043] It should be noted that the lower end of the first spring 61 fixedly connected with the filter tank 3 and the first-stage tank 4 is fixedly arranged in the inner cavity of the support plate 7, and the distance between the upper transverse sliding groove 11 and the limiting groove 12 can accommodate the height of two support plates 7 plus the height of the connecting cross rod 62, so that the limiting transverse plate 610 can be clamped and limited by the limiting groove 12 without being affected, and the openings of the lower transverse sliding groove 10 and the upper transverse sliding groove 11 are consistent with the bearing diameter of the connecting position of the pulley 63 and the connecting cross rod 62, and the inner cavity height of the lower transverse sliding groove 10 and the upper transverse sliding groove 11 is greater than the outer diameter of the pulley 63, so that the pulley 63 and the connecting cross rod 62 can move on the lower transverse sliding groove 10 and the upper transverse sliding groove 11 with the filter tank 3 and the first-stage tank 4, and the positions of each lower triangular block 64, upper triangular block 65 and trapezoidal block 66 are arranged according to the positions of the second-stage tank 2, the filter tank 3 and the first-stage tank 4 respectively, so as to facilitate the disengagement of the trapezoidal block 66 without being affected.

[0044] When the trapezoidal block 66 is separated from the upper triangular block 65, the lower surface of the upper triangular block 65 and the upper surface of the second spring 67 are both flat, so that the upper triangular block 65 limits the second spring 67 in the vertical direction. When the trapezoidal block 66 continues to move downward and abuts against the lower triangular block 64, the inclined surface of the trapezoidal block 66 abuts against the flat side of the trapezoidal block 66 and pushes the trapezoidal block 66 back into the through groove of the connecting cross rod 62. When the trapezoidal block 66 is at the lower part of the lower triangular block 64 and moves upward, the flat surface of the trapezoidal block 66 abuts against the inclined surface of the upper and lower triangular blocks 64, and the lower triangular block 64 moves upward together with the trapezoidal block 66 under the action of the T-shaped limiting groove 611. When the lower triangular block 64 abuts against the upper triangular block 65, the trapezoidal block 66 can be disengaged from the outside of the lower triangular block 64 and the upper triangular block 65. When the trapezoidal block 66 is not limited by the connecting cross rod 62, it will move upward with the second-stage tank 2, the filter tank 3 and the first-stage tank 4, move outward to the upper end of the T-shaped sliding groove 51 under the reaction force of the released first spring 61, and push the filter tank 3 and the first-stage tank 4 into the lower transverse sliding groove 10 and the upper transverse sliding groove 11 respectively through the cooperation between the pulley 63 and the lower transverse sliding groove 10 and the upper transverse sliding groove 11. Then, the second-stage tank 2 can be stopped in the middle of the lower transverse sliding groove 10 and the upper transverse sliding groove 11 through the mutual clamping and limiting of the limiting transverse plate 610 and the limiting groove 12, so as to realize separate and rapid cleaning.

[0045] The implementation principle of the easy-to-clean slot type liquid distributor is as follows: first, the inner vertical rod 53 is inserted into the inner T-shaped sliding groove 52, then the secondary tank 2, the filtering tank 3 and the primary tank 4 are pushed downward for a distance, so that the trapezoidal blocks 66 are moved to the lower ends of the lower triangular blocks 64, then the secondary tank 2, the filtering tank 3 and the primary tank 4 are no longer pushed, next, under the action of the first spring 61, the connecting horizontal rod 62 and the hanging plate 68 are pushed upward, at the same time, the secondary tank 2, the filtering tank 3 and the primary tank 4 are moved upward in the inner cavity of the outer T-shaped sliding groove 51, until the uppermost primary tank 4 is moved to the opening of the upper horizontal sliding groove 11, then the primary tank 4 is pushed onto the upper horizontal sliding groove 11, the filtering tank 3 is pushed onto the lower horizontal sliding groove 10 in turn, and the secondary tank 2 is fixed in the inner cavity of the inner T-shaped sliding groove 52 after being clamped in the limiting groove 12 by the limiting horizontal plate 610, then the secondary tank 2, the filtering tank 3 and the primary tank 4 can be carefully cleaned by the staff, when the cleaning is completed, the limiting horizontal plate 610 and the limiting groove 12 are disengaged from the limiting, and the secondary tank 2 is moved downward, so that the trapezoidal blocks 66 on both sides of the secondary tank 2 are moved to the lower parts of the upper triangular blocks 65, so that the two can abut against each other for limiting, when the secondary tank 2 is fixed, the same operation is performed on the remaining filtering tank 3 and primary tank 4.

[0046] The above is only an optional embodiment of the present disclosure, and is not used to limit the present disclosure. For those skilled in the art, the present disclosure can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A cleanable slot liquid distributor characterized by: Including outer shell (1), the lower part is equipped with two-stage groove (2) in the inner cavity of outer shell (1), the upper part of two-stage groove (2) is equipped with filter groove (3), the upper part of filter groove (3) is equipped with primary groove (4), both sides of the inner cavity of outer shell (1) are fixedly provided with two mutually symmetrical and same structure outer vertical rods (5), the middle part of two outer vertical rods (5) is provided with the same structure outer T-shaped sliding groove (51), one side of two outer T-shaped sliding grooves (51) is provided with a plurality of same structure lifting mechanism (6) in structure and mounting mode. The lifting mechanism (6) includes a first spring (61) fixedly arranged in the inner cavity of the outer T-shaped sliding groove (51), a lower hanging plate (68) abuttingly arranged on the upper part of the first spring (61), a connecting cross rod (62) fixedly arranged on the upper part of the lower hanging plate (68), two mutually symmetrical and same structure trapezoidal blocks (66) slidingly arranged on both sides of one end of the outer vertical rod (5) of the connecting cross rod (62), an upper triangular block (65) fixedly arranged on one side of the side wall of the outer vertical rod (5) and abuttingly arranged on the upper part of the trapezoidal block (66), a lower triangular block (64) slidingly arranged on one side of the side wall of the outer vertical rod (5) and abuttingly arranged on the lower part of the trapezoidal block (66), and a pulley (63) fixedly arranged on one side of the connecting cross rod (62) in the inner cavity of the outer T-shaped sliding groove (51) and slidingly arranged and limited in the inner cavity of the outer T-shaped sliding groove (51). The upper part of the outer vertical rod (5) is provided with an inner vertical rod (53), and the upper part of the inner vertical rod (53) is provided with a lower horizontal sliding groove (10) and an upper horizontal sliding groove (11) on both sides, respectively.

2. A cleanable trough liquid distributor according to claim 1, characterized in that: The lifting mechanism (6) further includes a second spring (67) fixedly arranged on one side surface of the trapezoidal block (66), and the second spring (67) is fixedly arranged in the inner cavity of one end of the connecting cross rod (62) away from the trapezoidal block (66).

3. A cleanable trough liquid distributor according to claim 1 wherein: The inner cavity of the outer T-shaped sliding groove (51) on one side of the lower hanging plate (68) is provided with a third spring (69), and the both ends of the third spring (69) are fixedly provided with a limiting horizontal plate (610) slidingly arranged in the inner cavity of one end of the outer T-shaped sliding groove (51) of the lower hanging plate (68).

4. A cleanable trough liquid distributor according to claim 1 wherein: The lower triangular block (64) is slidingly arranged on one side of the outer vertical rod (5) and provided with a T-shaped limiting groove (611) opened on the side wall of the outer vertical rod (5).

5. A cleanable trough liquid distributor according to claim 1 wherein: The upper part of the connecting cross rod (62) is provided with a supporting plate (7) slidingly connected with the opening side wall of the outer T-shaped sliding groove (51), and both sides of the lower end of the supporting plate (7) are provided with same structure sliding blocks (8) symmetrically, and the sliding blocks (8) are respectively provided with vertical sliding grooves (9) opened on both sides of the opening side wall of the outer T-shaped sliding groove (51).

6. A cleanable trough liquid distributor according to claim 1 wherein: The inner vertical rod (53) is provided with mutually symmetrical and same structure limiting grooves (12) on both sides of the lower part of the lower horizontal sliding groove (10), and the inner cavities of the limiting grooves (12) are limited by the limiting horizontal plate (610).

7. A cleanable trough liquid distributor according to claim 1 wherein: The outer vertical rod (5) is provided with an inner T-shaped sliding groove (52) which is communicated with the inner cavity of the outer T-shaped sliding groove (51), and the side wall of the inner cavity of the inner T-shaped sliding groove (52) and the outer surface of the inner vertical rod (53) slide with each other and are limited by each other.

8. A cleanable trough liquid distributor according to claim 1 wherein: The several lifting mechanisms (6) are vertically arranged and are respectively fixedly connected with the secondary tank (2), the filtering tank (3) and the primary tank (4).

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