Filter head device for backwashing filter tank

Abstract

The utility model discloses a filter head device for a backwashing filter tank, and particularly relates to the technical field of backwashing filter heads, the filter head device comprises a filter cap arranged at the top of a filter plate, the bottom of the filter cap is fixedly communicated with a filter rod, and the filter cap and the filter rod are fixed on the filter plate through a filter seat; the filter seat comprises an outer cylinder, an inner cylinder is inserted into the outer cylinder, and the outer wall of the top end of the filter rod and the inner wall of the inner cylinder are fixed together through threads; a plurality of limiting plates a are hinged to the bottom end of the outer cylinder, connecting plates are hinged to the ends, away from the filter plate, of the limiting plates a, limiting plates b are hinged to the ends, away from the limiting plates a, of the connecting plates, and one ends of the limiting plates a are hinged to the bottom end of the inner cylinder. According to the utility model, the filter seat is fixed on the filter plate from the upper part of the filter plate through the telescopic inner cylinder and outer cylinder, so that the installation operation of the existing filter seat is simplified, and meanwhile, the detachable design of the filter plate and the filter seat also can reduce the processing difficulty of some filter plates needing to be pre-embedded with the filter seat.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of backwash filter head, more specifically to a filter head device for backwash filter tank. BACKGROUND

[0002] The backwash filter head is an important component in water treatment process, and is widely used in various water treatment filters, filter tanks, combined type, return type, ion exchange column equipment and the like of softened water. The main function is that when the filter tank is running, with the increase of the filter material layer pollution interception capacity, the sludge permeability is deepened, which causes the filter speed to drop, and the filter tank water level gradually rises, and the turbidity of the filtered water increases. In order to restore normal operation of the filter tank and ensure the water quality and quantity, backwashing must be carried out at this time. The process of backwashing is to pour water from the bottom of the filter plate to impact the filter material layer on the filter plate.

[0003] The filter head is generally composed of a filter cap, a filter rod and a filter seat installed on the filter plate. The filter head and the filter cap are generally installed on the filter plate through the filter seat, as shown in the filter head of the prior art disclosed in CN203803220U. However, the installation of the filter head requires pre-buried filter seats in the production process of the filter plate, which increases the difficulty of making the filter plate. Another filter head without pre-buried filter seats is shown in the pre-buried adjustable backwash filter head of the prior art disclosed in CN201632125U. The installation needs to be operated on both sides of the filter plate. This installation method is not suitable for the installation of the filter plate of some large backwash filter tanks, and has limitations. Moreover, the operation of installing the filter seat from both sides of the filter plate is also troublesome. UTILITY MODEL CONTENTS

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a filter head device for backwash filter tank. The filter seat is fixed on the filter plate from above by using the inner cylinder and the outer cylinder, which simplifies the installation operation of the existing filter seat. Meanwhile, the detachable design of the filter plate and the filter seat can also reduce the processing difficulty of some filter plates that need to be pre-buried, so as to solve the problems in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a filter head device for backwash filter tank, comprising a filter cap installed on the top of the filter plate, a filter rod fixedly connected at the bottom of the filter cap, and the filter cap and the filter rod being fixed on the filter plate through a filter seat.

[0006] The filter seat comprises an outer cylinder, an inner cylinder is inserted into the inner cylinder, the outer wall of the top end of the filter rod and the inner wall of the inner cylinder are fixed together through threads, and the filter cap is located at the top of the outer cylinder and the inner cylinder.

[0007] The outer cylinder bottom end is hinged with multiple limiting plates a, one end of the limiting plate a away from the filter plate is hinged with a connecting plate, one end of the connecting plate away from the limiting plate a is hinged with a limiting plate b, the limiting plate b is located at the bottom of the limiting plate a, one end of the limiting plate a is hinged with the inner cylinder bottom end, after the outer cylinder is inserted into the filter plate, the limiting plate a and the limiting plate b are folded and clamped at the bottom of the filter plate by pulling the inner cylinder upwards, so that the position of the outer cylinder is fixed.

[0008] In a preferred embodiment, the outer cylinder top end is fixed on the filter plate top by a screw a, and a countersunk hole a for accommodating the screw a cap is formed on the outer cylinder.

[0009] In a preferred embodiment, a sealing ring a is arranged between the outer cylinder outer wall top end and the filter plate, and the screw a bottom end penetrates the sealing ring a, so as to seal the gap between the outer cylinder and the filter plate.

[0010] In a preferred embodiment, a ring-shaped plate is threadedly connected to the inner cylinder top end outer wall, the ring-shaped plate is embedded in the outer cylinder top end, the ring-shaped plate is fixed with the outer cylinder by a screw b, and a countersunk hole b for accommodating the screw b cap is formed on the ring-shaped plate.

[0011] In a preferred embodiment, a sealing ring b is arranged at the bottom of the ring-shaped plate, and the screw b bottom end penetrates the sealing ring b, so as to seal the gap between the inner cylinder and the outer cylinder.

[0012] In a preferred embodiment, an annular groove is formed on the inner cylinder top end inner wall for inserting the worker's fingertips, so as to facilitate the worker to insert the fingertips into the annular groove and pull the inner cylinder upwards along the outer cylinder inner wall after the outer cylinder is inserted into the filter plate.

[0013] In a preferred embodiment, a sealing ring c is fixed on the filter rod outer wall top end, and the sealing ring c is clamped in the annular groove after the filter rod and the inner cylinder are threadedly connected.

[0014] In a preferred embodiment, multiple grooves are formed on the ring-shaped plate top end outer wall for inserting the worker's fingertips, so as to facilitate the worker to install the ring-shaped plate on the inner cylinder top end.

[0015] The technical effects and advantages of the utility model are as follows:

[0016] 1. By using the movement of the inner cylinder in the outer cylinder to pull the limiting plate a and the limiting plate b to fold and clamp them at the bottom of the filter plate, and by fixing the outer cylinder top by the screw a, the position of the filter seat is fixed under the joint action of the screw a and the folded limiting plate a and the limiting plate b, and the installation operation of the filter seat only needs to be performed on one side of the filter plate, and the operation is relatively easy.

[0017] 2. By setting the filter seat detachable with the filter plate, the filter cap and filter rod are fixed on the filter plate by the filter seat, the filter seat does not need to be pre-buried in the filter plate in advance, and the machining difficulty of the filter plate is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The schematic view of the filter plate installed in the utility model;

[0019] Figure 2 The schematic view of the filter seat structure of the utility model;

[0020] Figure 3 The schematic view of the structure of the filter cap, filter rod and filter seat of the utility model;

[0021] Figure 4 The schematic view of the structure of the filter cap and filter rod of the utility model;

[0022] Figure 5 The schematic view of the inner cylinder extending from the bottom end of the outer cylinder of the utility model;

[0023] Figure 6 The sectional view of the outer cylinder and inner cylinder of the utility model.

[0024] The reference signs are:

[0025] 1, filter plate; 2, filter cap; 3, filter rod; 4, filter seat;

[0026] 41, outer cylinder; 42, inner cylinder; 43, limiting plate a; 44, limiting plate b; 45, connecting plate; 46, annular plate; 47, sealing ring a; 48, sealing ring b; 49, screw a; 410, screw b; 411, annular groove; 412, groove; 413, sealing ring c. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] The drawings in the specification Figure 1 , 2And 4, the utility model provides a filter head device for backwashing filter tank, including the filter cap 2 of installing in the top of filter plate 1, the filter rod 3 of fixed communication has in the bottom of filter cap 2, filter cap 2 and filter rod 3 are fixed on filter plate 1 through filter seat 4, wherein, filter plate 1 needs to set up the through -hole for the installation of filter seat 4 in advance when producing and processing, and some filter plate 1 is made of concrete, so the through -hole can be realized through concrete pouring mould, and the technology can be realized through prior art means, and here no further elaboration is made.

[0029] Unlike prior art, the filter seat 4 in the utility model need not be preset on the filter plate 1 during the production of the filter plate 1, and also need not be installed from both sides of the filter plate 1, and the specific structure of the filter seat 4 is shown as Figure 2 、 3 , 5 and 6, including outer cylinder 41, outer cylinder 41 is inserted on the through -hole of filter plate 1, the top end of outer cylinder 41 is located at the top of filter plate 1, and the bottom end of outer cylinder 41 extends from the bottom of filter plate 1, and the top end of outer cylinder 41 is fixed on the top of filter plate 1 through screw a49, the outer cylinder 41 is provided with countersunk hole a for accommodating the cap of screw a49, the bottom end of screw a49 is drilled into the inside of filter plate 1, the cap of screw a49 is located in the inside of countersunk hole a, and sealing ring a47 is arranged between the top end of the outer wall of outer cylinder 41 and filter plate 1, and the bottom end of screw a49 penetrates sealing ring a47 to seal the gap between outer cylinder 41 and filter plate 1;

[0030] The inner cylinder 42 is inserted in the inside of the outer cylinder 41, the outer wall of the top end of filter rod 3 and the inner wall of inner cylinder 42 are fixed together through threads, the filter cap 2 is located at the top of outer cylinder 41 and inner cylinder 42, a plurality of limiting plates a43 are hinged to the bottom end of outer cylinder 41, the end, away from filter plate 1, of limiting plate a43 is hinged to connecting plate 45, the end, away from limiting plate a43, of connecting plate 45 is hinged to limiting plate b44, limiting plate b44 is located at the bottom of limiting plate a43, and the end of limiting plate a43 is hinged to the bottom end of inner cylinder 42, after inserting outer cylinder 41 into the inside of filter plate 1, limiting plate a43 and limiting plate b44 are folded into the state shown as Figure 2 by pulling up inner cylinder 42, and the folded limiting plate a43 and limiting plate b44 are just located at the bottom of filter plate 1, and the bottom end of outer cylinder 41 can be fixed from the bottom of filter plate 1, and in addition, screw a49 in the utility model fixes outer cylinder 41 from the top of filter plate 1, so that outer cylinder 41 can be fixed in the through -hole of filter plate 1 under the joint action of screw a49 and limiting plate a43 and limiting plate b44;

[0031] Moreover, in order to conveniently pull up inner cylinder 42 from the inside of outer cylinder 41, as Figure 6As shown in the inner cylinder 42 top end inner wall is provided with a ring groove 411 for the worker's fingertips inserted, the setting can facilitate the worker to insert the fingertips ring groove 411 inside pull up the inner cylinder 42 along the outer cylinder 41 inner wall.

[0032] Next also need to fix the position of the inner cylinder 42: as Figure 2 、 5 And 6, the outer wall of the top end of the inner cylinder 42 is threadedly connected with an annular plate 46, the annular plate 46 is embedded in the inner top end of the outer cylinder 41, the annular plate 46 is fixed with the outer cylinder 41 by screw b410, the annular plate 46 is provided with a countersunk hole b for accommodating the screw b410 cap, after the inner cylinder 42 is moved up, the worker limits the position of the inner cylinder 42 while rotating the annular plate 46 to be on the outer wall of the inner cylinder 42, and a plurality of recesses 412 for the worker's fingertips inserted are provided on the top end outer wall of the annular plate 46, which can facilitate the worker to clamp the annular plate 46 with fingers, and then install the annular plate 46 on the top end of the inner cylinder 42, after the annular plate 46 is tightened, the screw b410 is screwed into the countersunk hole b of the annular plate 46 to fix the position of the annular plate 46, so that the inner cylinder 42 can be fixed in the outer cylinder 41;

[0033] In order to ensure the sealing, the annular plate 46 is provided with a sealing ring b48 at the bottom, after the inner cylinder 42 is moved up, the sealing ring b48 is needed to be sleeved on the top end of the inner cylinder 42, and then the annular plate 46 is screwed on the top end of the inner cylinder 42, so that the bottom end of the screw b410 penetrates the sealing ring b48, and the sealing ring b48 is further compressed, thereby sealing the gap between the inner cylinder 42 and the outer cylinder 41, preventing water and gas leakage during filtration or backwashing.

[0034] Finally, the filter rod 3 is inserted into the inner cylinder 42, and then the filter rod 3 is rotated, so that the top end of the filter rod 3 and the inner wall of the inner cylinder 42 can be fixed together by screw thread, so that the filter cap 2, the filter rod 3 and the filter plate 1 can be fixed on the filter plate 1 by the filter seat 4, and the sealing ring c413 is fixed on the outer wall of the top end of the filter rod 3, and the sealing ring c413 is clamped in the annular groove 411 after the filter rod 3 and the inner cylinder 42 are screwed together, which can seal the gap between the filter rod 3 and the inner cylinder 42, and further improve the sealing effect.

[0035] The above installation operation does not need to pre-bury the filter seat 4 in the production process of the filter plate 1, nor need to install the filter seat 4 on both sides of the filter plate 1, the whole installation operation can be operated on the top of the filter plate 1, which is simple, fast, and will not increase the production difficulty of the filter plate 1, and can achieve two goals at once.

[0036] Finally: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A filter head device for backwashing filter tank, comprising a filter cap (2) installed on the top of filter plate (1), the bottom of the filter cap (2) is fixedly connected with filter rod (3), characterized in that: The filter cap (2) and the filter rod (3) are fixed on the filter plate (1) through the filter seat (4); The filter seat (4) comprises an outer cylinder (41), an inner cylinder (42) is inserted into the inner cylinder (41), the outer wall of the top end of the filter rod (3) is fixed with the inner wall of the inner cylinder (42) through threads, and the filter cap (2) is located at the top of the outer cylinder (41) and the inner cylinder (42). A plurality of limiting plates a (43) are hinged to the bottom end of the outer cylinder (41), one end of the limiting plate a (43) away from the filter plate (1) is hinged to a connecting plate (45), one end of the connecting plate (45) away from the limiting plate a (43) is hinged to a limiting plate b (44), the limiting plate b (44) is located at the bottom of the limiting plate a (43), one end of the limiting plate a (43) is hinged to the bottom end of the inner cylinder (42), and after the outer cylinder (41) is inserted into the filter plate (1), the limiting plate a (43) and the limiting plate b (44) are folded and clamped at the bottom of the filter plate (1) by pulling the inner cylinder (42) upwards, so as to fix the position of the outer cylinder (41).

2. A head assembly for a backwash filter according to claim 1, wherein: The top end of the outer cylinder (41) is fixed on the top of the filter plate (1) through a screw a (49), and a countersunk hole a is formed in the outer cylinder (41) to accommodate the screw cap of the screw a (49).

3. A head assembly for a backwash filter according to claim 2, wherein: A sealing ring a (47) is arranged between the top end of the outer wall of the outer cylinder (41) and the filter plate (1), and the bottom end of the screw a (49) penetrates the sealing ring a (47), so as to seal the gap between the outer cylinder (41) and the filter plate (1).

4. A head assembly for a backwash filter according to claim 1, wherein: The top end of the outer cylinder (41) is fixed on the top of the filter plate (1) through a screw a (49), and a countersunk hole a is formed in the outer cylinder (41) to accommodate the screw cap of the screw a (49).

5. A head assembly for a backwash filter according to claim 4 wherein: The bottom of the ring-shaped plate (46) is provided with a sealing ring b (48), and the bottom end of the screw b (410) penetrates the sealing ring b (48), so as to seal the gap between the inner cylinder (42) and the outer cylinder (41).

6. A head assembly for a backwash filter according to claim 1, wherein: A ring-shaped groove (411) is formed in the inner wall of the top end of the inner cylinder (42) for inserting the fingertips of workers, so as to facilitate workers to insert their fingertips into the ring-shaped groove (411) to pull the inner cylinder (42) upwards along the inner wall of the outer cylinder (41) after the outer cylinder (41) is inserted into the filter plate (1).

7. A head assembly for a backwash filter according to claim 6 wherein: The top end of the outer wall of the ring-shaped plate (46) is provided with a plurality of recesses (412) for inserting the fingertips of workers, so as to facilitate workers to install the ring-shaped plate (46) on the top end of the inner cylinder (42).

8. A head assembly for a backwash filter according to claim 4, wherein: ​

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