Hollow fiber membrane water treatment device

Abstract

The utility model provides a hollow fiber membrane water treatment device. The hollow fiber membrane water treatment device comprises an upper joint, a lower joint and a filter unit arranged between the upper joint and the lower joint, a sleeve is mounted on the upper joint, one end of the filtering unit is connected with the sleeve through a first detachable connecting structure, and the other end of the filtering unit is connected with the lower joint through a second detachable connecting structure; a driving structure is arranged between the sleeve and the upper connector, and the driving structure is used for driving the sleeve to axially move relative to the upper connector and then to be separated from or connected with the first detachable connecting structure; the upper joint is connected with a water inlet pipe, and the lower joint is provided with a concentrated water pipe and a purified water pipe; the utility model can solve the problems in the prior art that when the filter unit is replaced, an end cover (or a shell) fixedly connected with an external pipeline must be disassembled in advance, the operation process is tedious, and the maintenance time cost is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field, concretely is a kind of hollow fiber membrane water treatment device. BACKGROUND

[0002] Hollow fiber membrane refers to the appearance like fiber, and it is a membrane structure with self-supporting effect, which is widely used in sewage treatment, wastewater reuse and many other fields.

[0003] In the existing hollow fiber membrane water treatment device, the filtering unit and the upper and lower joints are usually fixedly connected in an integrated manner, which is not convenient for replacing the hollow fiber membrane. In order to solve the problems existing in the prior art, the utility model with publication number CN214389637U discloses a kind of multilayer hollow fiber membrane and fiber membrane assembly (hereinafter referred to as prior art 1), comprising multilayer hollow fiber membrane and hollow pipe, the first membrane tube is embedded in the hollow pipe, the bottom of the hollow pipe is provided with a bottom disc, and the bottom disc is welded with the hollow pipe, the top of the hollow pipe is provided with a top disc, and the top disc is overlapped with the hollow pipe, the inner cavity bottom of the hollow pipe is provided with a spring, the bottom end of the spring is welded with the hollow pipe, and the top end of the spring is in abutment with the bottom end of the first membrane tube, the bottom of the top disc is provided with a clamp on both sides, and the top of the clamp is fixedly provided with an elastic strip.

[0004] Although the replacement of the filtering unit can be realized in prior art 1, most of the hollow fiber membrane water treatment devices currently adopt the structure of bolt connection of end cover and shell or integral winding, and when replacing the membrane core, the main pipeline needs to be disconnected, the end cover and the sealing element need to be disassembled, the operation process is complicated, and the maintenance cost is high. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of hollow fiber membrane water treatment device, which can solve the problem that the end cover (or shell) connected with the external pipeline must be disassembled when replacing the filtering unit in the prior art, the operation process is complicated, and the maintenance time cost is increased.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A kind of hollow fiber membrane water treatment device, comprising an upper joint, a lower joint and a filtering unit installed between the upper joint and the lower joint;

[0008] A sleeve is installed on the upper joint, one end of the filtering unit is connected with the sleeve through a first detachable connection structure, and the other end is connected with the lower joint through a second detachable connection structure; a driving structure is arranged between the sleeve and the upper joint, and the driving structure is used to drive the sleeve to move axially relative to the upper joint and then separate or engage with the first detachable connection structure;

[0009] The upper joint is connected with a water inlet pipe, the lower joint is provided with a concentrated water pipe and a clean water pipe, and a water collecting pipe is installed in the lower joint, and the filter unit is connected with the clean water pipe through the water collecting pipe.

[0010] Preferably, the filter unit comprises a shell and a filter core, end covers are installed at the upper and lower ends of the filter core, a liquid cavity in communication with the filter core is arranged in the end cover close to the clean water pipe, the end cover away from the clean water pipe is used for sealing the top end of the filter core, and the end of the filter core close to the clean water pipe is in communication with the water collecting pipe through the liquid cavity.

[0011] Preferably, the fixing assembly comprises a first fixing ring and a second fixing ring arranged in sequence from top to bottom, a plurality of first fixing portions are arranged on the first fixing ring at equal intervals in the circumferential direction of the first fixing ring, and a plurality of second fixing portions are arranged on the second fixing ring at equal intervals in the circumferential direction of the second fixing ring.

[0012] Preferably, the first fixing portions and the second fixing portions are arranged alternately.

[0013] Preferably, arc surfaces are arranged on the first fixing portions and the second fixing portions.

[0014] Preferably, a mounting ring is coaxially fixedly sleeved on the lower joint, a stepped groove is arranged on the mounting ring, and a first sealing ring is installed in the stepped groove.

[0015] Preferably, a plurality of annular grooves are arranged in the water collecting pipe from top to bottom, and a second sealing ring is installed in the annular groove.

[0016] Preferably, a stepped platform is arranged on the sleeve, and a sealing block is installed on the stepped platform.

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

[0018] In the utility model, when the filter unit needs to be replaced, the switch valves and the liquid pump arranged on the water inlet pipe, the clean water pipe and the concentrated water pipe are closed in sequence, the sleeve is rotated to move upward and gradually separate from the filter unit, at this time, enough operation space is formed between the filter unit and the upper joint, the filter unit is rotated to separate from the lower joint, and the online quick replacement of the filter unit is realized.

[0019] After the two ends of the filter unit are separated from the sleeve and the lower joint, the filter unit can be directly taken out vertically between the upper joint and the lower joint, the upper joint and the lower joint connected with the pipeline do not need to be taken down, the operation is simple, and the maintenance time is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can be obtained without creative labor on the basis of the drawings.

[0021] Figure 1 It is a perspective view of the present application.

[0022] Figure 2 It is a structural schematic view of the present application.

[0023] Figure 3 It is a structural schematic view of the first fixing part in the present application.

[0024] Figure 4 It is a structural schematic view of the second fixing part in the present application.

[0025] Figure 5 It is a partial enlarged view of A in the present application Figure 2

[0026] Figure 6 It is a partial enlarged view of B in the present application Figure 2

[0027] In the drawings, the component list represented by each reference numeral is as follows:

[0028] 101 - upper joint, 102 - lower joint, 103 - filtering unit, 104 - sleeve, 105 - water inlet pipe, 106 - thick water pipe, 107 - clean water pipe, 108 - water collecting pipe, 109 - shell, 110 - filter core, 111 - end cover, 112 - liquid cavity, 113 - fixing assembly, 114 - first fixing ring, 115 - second fixing ring, 116 - first fixing part, 117 - second fixing part, 118 - first sealing ring, 119 - mounting ring, 120 - second sealing ring, 121 - sealing block, 122 - flow guide cover. DETAILED DESCRIPTION

[0029] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0030] ​​In the description of the utility model embodiments, it needs to be understood that the orientation or positional relationship indicated by the terms "length", "vertical", "horizontal", "top", "bottom" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model embodiments and simplifying the description, and thus cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as limiting the utility model embodiments.

[0031] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model embodiments, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0032] In the utility model embodiments, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model embodiments can be understood according to the specific circumstances.

[0033] In the utility model embodiments, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical direction of the first feature above and obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical direction of the first feature below and obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the utility model embodiments. In order to simplify the disclosure of the utility model embodiments, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model embodiments. In addition, the utility model embodiments can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0035] The embodiments of the utility model will be described in detail below with reference to the drawings.

[0036] Referring to Figures 1-6 The embodiment discloses a hollow fiber membrane water treatment device, including upper joint 101, lower joint 102 and install between the filter unit 103 of upper joint 101 and lower joint 102,

[0037] The sleeve 104 is installed on the upper joint 101, one end of the filter unit 103 is connected with the sleeve 104 through the first detachable connecting structure, the other end is connected with the lower joint 102 through the second detachable connecting structure, the driving structure is arranged between the sleeve 104 and the upper joint 101, and the driving structure is used to drive the sleeve 104 to move axially relative to the upper joint 101 and then separate or engage with the first detachable connecting structure,

[0038] The water inlet pipe 105 is connected on the upper joint 101, the concentrated water pipe 106 and the clean water pipe 107 are arranged on the lower joint 102, the water collecting pipe 108 is installed in the lower joint 102, and the filter unit 103 is connected with the clean water pipe 107 through the water collecting pipe 108.

[0039] In the embodiment, the driving structure is composed of a second inner thread machined on the inner surface of the sleeve (104) away from the one end of the upper joint (101) and a second outer thread machined on the outer surface of the upper end of the filtering unit (103) and matched with the second inner thread, and the upper joint 101 and the sleeve 104 are connected by screwing the first inner thread and the first outer thread; the first detachable connection structure can be a buckle, a quick plug or a threaded fitting structure, and in the embodiment, the first detachable connection structure is the second inner thread machined on the inner surface of the sleeve 104 away from the one end of the upper joint 101 and the second outer thread machined on the outer surface of the upper end of the filtering unit 103 and matched with the second inner thread, and the filtering unit 103 is fixed by screwing the second outer thread with the second inner thread machined on the inner wall of the sleeve 104; the second detachable connection structure can be a buckle, a quick plug or a threaded fitting structure, and in the embodiment, the second detachable connection structure is a third outer thread machined on the outer surface of the lower end of the filtering unit 103 and a corresponding third inner thread machined on the inner surface of the upper end of the lower joint 102, and the filtering unit 103 is fixed by screwing the third outer thread and the third inner thread; the liquid pump is installed on the clean water pipe 107, and the on-off valves are installed on the clean water pipe 107, the water inlet pipe 105 and the concentrated water pipe 106; after the liquid pump is started, the water to be treated flows into the sleeve 104 through the water inlet pipe 105 connected to the upper joint 101, and then enters the inside of the filtering unit 103 from the outside to the inside, and the clean water filtered by the filtering unit 103 can be collected through the water collecting pipe 108 installed in the lower joint 102, and finally discharged from the clean water pipe 107 opened on the lower joint 102; the concentrated water generated by filtering flows along the gap between the filtering unit 103 and the shell 109, and is discharged from the concentrated water pipe 106 opened on the lower joint 102, realizing the diversion of concentrated and clean water; when it is necessary to replace the filtering unit 103, the on-off valves and the liquid pump provided on the water inlet pipe 105, the clean water pipe 107 and the concentrated water pipe 106 are closed in sequence; rotating the sleeve 104 can make the sleeve 104 move upward and gradually separate from the filtering unit 103, at this time, enough operation space is formed between the filtering unit 103 and the upper joint 101, and rotating the filtering unit 103 can make the filtering unit 103 separate from the lower joint 102; after the two ends of the filtering unit 103 are separated from the sleeve 104 and the lower joint 102 respectively, the filtering unit 103 can be directly taken out vertically between the upper joint 101 and the lower joint 102, without the need to remove the upper joint 101 and the lower joint 102 connected with the pipeline, simplifying the operation process and shortening the maintenance time.

[0040] In some embodiments, the filter unit 103 comprises a housing 109 and a filter core 110, end caps 111 are installed at the upper and lower ends of the filter core 110, a liquid cavity 112 communicating with the filter core 110 is arranged in the end cap 111 close to the clean water pipe 107, the end cap 111 away from the clean water pipe 107 is used to close the top end of the filter core 110, and the end of the filter core 110 close to the clean water pipe is communicated with the water collecting pipe 108 through the liquid cavity 112; The housing 109 is installed with a fixing assembly 113 for limiting the filter core 110. In this embodiment, the second internal thread is arranged at the top end of the housing 109, and is screwed and fixed with the second external thread processed on the inner wall of the sleeve 104; The third external thread is arranged at the bottom end of the housing 109, and the corresponding third internal thread is processed on the inner surface of the upper end of the lower connector 102, so that the lower end of the filter unit 103 is screwed and fixed with the lower connector 102; The filter core 110 is composed of a plurality of hollow fiber membrane filaments forming a filament bundle, the end of the plurality of hollow fiber membrane filaments close to the clean water pipe is communicated with the water collecting pipe 108 through the liquid cavity 112, and the upper and lower ends of the hollow fiber membrane filaments are sealingly connected with the end cap 111; After the liquid pump is started, the raw water between the housing 109 and the filter core 110 enters the hollow flow channel of the hollow fiber membrane filament from the outside to the inside under the action of the liquid pump, the hollow fiber membrane filament can filter the raw water entering the hollow flow channel, so that the filtered clean water is collected in the liquid cavity 112 through the hollow flow channel, and the clean water is discharged into the clean water pipe 107 through the water collecting pipe 108 communicating with the liquid cavity 112; During the water treatment process, the water to be treated flows to the hollow fiber membrane filament at a certain pressure from the outside of the housing 109, and the water flow impact will cause the unsecured membrane filament to shake and adhere at a high frequency, reduce the contact area of the membrane filament and water, and directly cause the filtration efficiency to decrease; The fixing assembly 113 can limit the filter core 110, avoid displacement of the plurality of hollow fiber membrane filaments under the impact of the water flow, cause the membrane filament to rub and break, and prolong the service life of the filter core 110.

[0041] In some embodiments, the fixing assembly 113 comprises a first fixing ring 114 and a second fixing ring 115 arranged in sequence from top to bottom, the first fixing ring 114 is provided with a plurality of first fixing parts 116 arranged at equal intervals along the circumferential direction of the first fixing ring 114, and the second fixing ring 115 is provided with a plurality of second fixing parts 117 arranged at equal intervals along the circumferential direction of the second fixing ring 115. In this embodiment, the first fixing ring 114 and the second fixing ring 115 are fixed to the inner wall of the shell (109) by interference fit or adhesion; the first fixing part 116 fixedly connected to the first fixing ring 114 and the second fixing part 117 fixedly connected to the second fixing ring 115 can clamp the membrane filament bundle from different heights and different circumferential positions of the membrane filament bundle, disperse the force generated by water flow impact to multiple fixing points, avoid local stress concentration causing hollow fiber membrane filament shedding or displacement, and ensure the filtration effect.

[0042] In some embodiments, the first fixing part 116 and the second fixing part 117 are arranged alternately. In this embodiment, the alternate arrangement of the first fixing part 116 and the second fixing part 117 can avoid the occurrence of unpositioned areas, prevent the hollow fiber membrane filament from loosening or shifting from the fixing gap; and when the membrane filament bundle is impacted by water flow, the alternate arrangement of the first fixing part 116 and the second fixing part 117 can disperse the impact force, reduce the overall shaking of the membrane filament bundle, and avoid the raw water cavity formed between the shell 109 and the filter core 110 being blocked by the fixing assembly 113 to cause water flow short circuit, ensuring stable water flow.

[0043] In some embodiments, the first fixing part 116 and the second fixing part 117 are both provided with a circular arc surface. By arranging the circular arc surface to contact the filter core 110, the first fixing part 116 and the second fixing part 117 can be prevented from scratching the surface of the hollow fiber membrane when limiting the filter core 110; when installing the filter core 110, the arc surface can guide the membrane filament bundle to be quickly positioned between the fixing parts, and when disassembling, the fixing parts can be prevented from being jammed with the membrane filament, improving the convenience of maintenance.

[0044] In some embodiments, the lower joint 102 is coaxially fixed with a mounting ring 119, the mounting ring 119 is provided with a stepped groove, and the first sealing ring 118 is installed in the stepped groove. In this embodiment, when the shell 109 and the lower joint 102 are screwed together by threaded connection, an axial pressure downward along the axis will be generated, which will be transmitted to the first sealing ring 118 through the lower end surface of the filter unit 103, compress the sealing ring to make the sealing ring elastically deform, seal the gap between the shell 109 and the lower joint 102, and avoid water leakage.

[0045] In some embodiments, a plurality of annular grooves are arranged in the water collecting pipe 108 from top to bottom, and the second sealing ring 120 is arranged in the annular grooves. In the embodiment, the second sealing ring 120 is used to seal the gap between the cover and the water collecting pipe 108, so as to prevent the filtered water from leaking out.

[0046] In some embodiments, a stepped platform is arranged on the sleeve 104, and the sealing block 121 is arranged on the stepped platform. In the embodiment, when the sleeve 104 is screwed and connected with the shell 109, the axial pressure downward along the axis is generated, which is transmitted to the sealing block 121 through the stepped platform of the sleeve 104. When the sealing block 121 is pressed on the shell 109, the elastic deformation of the sealing block 121 is triggered, so as to seal the gap between the shell 109 and the sleeve.

[0047] In some embodiments, the flow guide cover 122 for connecting with the water inlet pipe 105 is arranged in the upper joint 101. In the embodiment, the flow guide cover 122 is coaxially fixed in the inner part of the upper joint 101 and communicates with the water inlet pipe 105. The flow guide cover 122 is a horn structure with a narrow upper part and a wide lower part. The upper end of the flow guide cover 122 is sealingly connected with the outlet of the water inlet pipe 105, so as to ensure that the water flow completely enters the flow guide cover 122. The lower end of the flow guide cover 122 is open and faces the filter unit 103. The liquid flowed out of the water inlet pipe 105 first enters the inner part of the flow guide cover 122. The water flow is guided along the inner wall of the flow guide cover 122 downward, so as to avoid the overflow of the water flow after the water flow contacts the thread gap between the upper joint 101 and the sleeve 104.

[0048] Although the preferred embodiments of the present application have been described, those skilled in the art who know the basic creative concept can make other changes and modifications to the embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0049] The above description is only the preferred embodiments of the present application and is not intended to limit the present application. It should be pointed out that any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hollow fiber membrane water treatment device, characterized by: The utility model relates to a filter device, including upper joint (101), lower joint (102) and install between the upper joint (101) and lower joint (102) filter unit (103); The upper joint (101) is provided with a sleeve (104), one end of the filter unit (103) is connected with the sleeve (104) through a first detachable connection structure, and the other end is connected with the lower joint (102) through a second detachable connection structure; a driving structure is arranged between the sleeve (104) and the upper joint (101), and the driving structure is used to drive the sleeve (104) to move axially relative to the upper joint (101) and then separate or engage with the first detachable connection structure; The upper joint (101) is connected with a water inlet pipe (105), the lower joint (102) is provided with a concentrated water pipe (106) and a clean water pipe (107), and a water collecting pipe (108) is arranged in the lower joint (102); the filter unit (103) is connected with the clean water pipe (107) through the water collecting pipe (108).

2. A hollow fibre membrane water treatment device as claimed in claim 1, characterised in that: The filter unit (103) comprises a shell (109) and a filter core (110), end covers (111) are arranged at the upper and lower ends of the filter core (110), a liquid cavity (112) in communication with the filter core (110) is arranged in the end cover (111) close to the clean water pipe (107), the end cover (111) away from the clean water pipe (107) is used to close the top end of the filter core (110), and the liquid cavities (112) of the filter cores (110) close to the clean water pipe are in communication with the water collecting pipe (108); the shell (109) is provided with a fixing assembly (113) for limiting the filter core (110).

3. A hollow fibre membrane water treatment device as claimed in claim 2, characterised in that: The fixing assembly (113) comprises a first fixing ring (114) and a second fixing ring (115) arranged in sequence from top to bottom, the first fixing ring (114) is provided with a plurality of first fixing portions (116) arranged at equal intervals along the circumferential direction of the first fixing ring (114), and the second fixing ring (115) is provided with a plurality of second fixing portions (117) arranged at equal intervals along the circumferential direction of the second fixing ring (115).

4. A hollow fibre membrane water treatment device as claimed in claim 3, characterised in that: The first fixing portions (116) and the second fixing portions (117) are arranged alternately.

5. A hollow fibre membrane water treatment device as claimed in claim 4, characterised in that: Arc surfaces are arranged on the first fixing portions (116) and the second fixing portions (117).

6. A hollow fibre membrane water treatment device as claimed in claim 1, characterised in that: The lower joint (102) is coaxially fixed with a mounting ring (119), the mounting ring (119) is provided with a stepped groove, and the first sealing ring (118) is arranged in the stepped groove.

7. A hollow fibre membrane water treatment device as claimed in claim 1, characterised in that: A plurality of annular grooves are arranged in the water collecting pipe (108) from top to bottom, and the second sealing ring (120) is arranged in the annular grooves.

8. A hollow fibre membrane water treatment device as claimed in claim 1, characterised in that: A stepped platform is arranged on the sleeve (104), and the sealing block (121) is arranged on the stepped platform.

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