CN220003189U - Filter and detection device - Google Patents

Abstract

The utility model discloses a filter and detection equipment, and relates to the technical field of filtration. The filter includes a base assembly, a handle, and a fastening assembly. The base assembly is provided with a slot and a first fluid channel. The handle has a mounting end for mounting the cartridge assembly, the mounting end being insertable into the slot. The fastening component is detachably and fixedly connected with the base component, the abutting end of the fastening component can be inserted into the mounting end and/or the filter element component in the slot, so that the mounting end and the filter element component are detachably fixed in the slot, and the filter element component is communicated with the first fluid channel and the second fluid channel of the abutting end when being fixed in the slot. The filter provided by the utility model adopts a drawer type design, so that the fastening component and the base component do not need to be moved to be completely separated when the filter element component is replaced, the replacement difficulty of the filter element component can be reduced, and the filter element component is convenient for a user to use.

Description

Filter and detection device

Technical Field

The utility model relates to the technical field of filtration, in particular to a filter and detection equipment.

Background

The existing filter device with the replaceable filter element mainly comprises the filter element, a mounting seat and a pressing cap, wherein a groove for mounting the filter element and the pressing cap is generally formed in the mounting seat, and the mounting seat is generally connected with the pressing cap through threads. When the filter is assembled, the filter element is required to be respectively abutted with the bottom of the groove and the pressing cap in a screwing and pressing cap mode, so that the tightness and the filtering effect of the filter device are ensured. However, the filter device can replace the filter element only by unscrewing the press cap and the mounting seat to be completely separated, so that the use of a user is inconvenient.

Disclosure of Invention

The utility model provides a filter, a filtering device and detection equipment, which are used for solving the problem that the filtering device in the prior art is inconvenient to replace a filter element.

To solve the above problems, the present utility model provides: a filter, comprising:

the base assembly is provided with a slot and a first fluid channel;

a handle having a mounting end for mounting a cartridge assembly, the mounting end being insertable into the slot;

the fastening component is detachably and fixedly connected with the base component and is provided with an abutting end, the abutting end can be inserted into the base component and the mounting end in the slot and/or the filter element component is/are abutted to each other, so that the mounting end and the filter element component are detachably fixed in the slot, the abutting end is provided with a second fluid channel, and the filter element component is communicated with the first fluid channel and the second fluid channel when being fixed in the slot.

In one possible embodiment, the mounting end is provided with a through hole for mounting the filter element assembly, the through hole is provided with two opposite holes, when the mounting end is inserted into the slot and the abutting end is inserted into the base assembly, one hole is aligned with one channel port of the first fluid channel, and the other hole is aligned with one channel port of the second fluid channel.

In one possible embodiment, the abutment end is capable of being partially inserted into the through-hole and abutting both the wall of the through-hole and the filter element assembly.

In one possible embodiment, a limiting structure is disposed between the mounting end and the filter element assembly, and the limiting structure is used for limiting the filter element assembly to slide along a direction from one end to the other end of the through hole.

In one possible implementation manner, the filter further comprises a filter element assembly, the filter element assembly comprises a fixing seat, a filter core and a fixing piece, the fixing seat can be accommodated in the slot, a fixing groove for accommodating the filter core is formed in the fixing seat, the fixing piece is installed on the fixing seat and seals a notch of the fixing groove, the abutting end can be inserted into the base assembly and is in sealing connection with the fixing piece, the filter element assembly is clamped between the abutting end and the slot wall of the slot, a first opening capable of being communicated with the filter element and the first fluid channel is formed in the fixing seat, and a second opening capable of being communicated with the filter element and the second fluid channel is formed in the fixing piece.

In one possible embodiment, the side of the abutment end facing the filter element assembly is provided with an abutment groove adapted to the position and shape of the fixing element.

In one possible implementation manner, the fastening assembly comprises a connector and a top shaft, the base assembly is provided with a threaded groove, an external thread matched with the threaded groove is arranged on the periphery of the connector, the connecting end of the top shaft is inserted into the connector, one end, far away from the connecting end, of the top shaft is the abutting end, and the second fluid channel extends along the axis direction of the top shaft.

In one possible embodiment, the external thread has a nominal diameter D and the abutment end has a diameter D, satisfying D/D.ltoreq.0.8.

In one possible embodiment, the connector or the top shaft is provided with a first abutment portion, the threaded groove is provided with a second abutment portion, and the first abutment portion and the second abutment portion are capable of abutting to limit movement of the fastening assembly in a direction approaching the filter element assembly.

In one possible embodiment, the fastening assembly further comprises a limiting member detachably connected to the connecting end, an abutment protrusion is provided on the circumference of the top shaft, and the connector is located between the limiting member and the abutment protrusion.

In one possible implementation manner, the fastening assembly further comprises a clamp and a handle, wherein the clamp is shaped like a clamp spring and surrounds the periphery of the connector, and the handle is connected with two opposite ends of the clamp so as to fix the relative positions of the clamp and the connector.

In one possible embodiment, the base assembly is provided with a magnetic member capable of interacting with the mounting end to drive the mounting end into abutment with the slot wall of the slot.

The utility model also provides: a filter device comprising a filter provided in any one of the embodiments above.

The utility model also provides: a detection device comprising a filter provided in any of the embodiments described above or a filter arrangement provided in any of the embodiments described above.

The beneficial effects of the utility model are as follows: the utility model provides a filter, a filtering device and detection equipment, wherein when the filter is assembled, a filter element assembly can be arranged on the installation end of a handle, then the installation end is inserted into a slot of a base assembly, meanwhile, as a fastening assembly is detachably and fixedly connected with the base assembly, the fastening assembly can move towards the direction close to the filter element assembly and is fixed, the abutting end of the fastening assembly is inserted into the base assembly and then abuts against the installation end and/or the filter element assembly in the slot, so that the installation end and the filter element assembly are detachably fixed in the slot, and the filter element assembly is communicated with a first fluid channel and a second fluid channel. When changing filter element assembly, can make fastening component drive its butt end and remove in order to cancel the butt to installation end and/or filter element assembly towards the direction of keeping away from filter element assembly, then take out the handle and thereby change filter element assembly, consequently, adopt drawer type design between base subassembly and the handle of installing filter element assembly, can make filter element assembly need not to remove fastening component and base subassembly to complete separation when changing, can reduce filter element assembly's the change degree of difficulty, convenience of customers uses.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic diagram of a filter provided by an embodiment of the present utility model;

FIG. 2 shows a schematic cross-sectional view of a filter provided by an embodiment of the present utility model;

FIG. 3 shows a schematic view of a partial enlarged structure at A in FIG. 2;

FIG. 4 shows a schematic exploded view of a filter provided by an embodiment of the present utility model;

FIG. 5 shows a further exploded view of a filter provided by an embodiment of the present utility model;

fig. 6 shows a further exploded view of another view of a filter provided by an embodiment of the present utility model.

Description of main reference numerals:

100-a base assembly; 110-slots; 120-a first fluid channel; 130-thread groove; 140-magnetic member; 150-a first joint; 200-fastening assembly; 210-abutting end; 211-a second fluid passage; 212-an abutment groove; 220-connectors; 230-top shaft; 231-connection end; 232-abutment projections; 250-limiting piece; 260-a compactor; 270-a handle; 280-a second linker; 300-handle; 310-mounting end; 320-through holes; 321-steps; 400-a cartridge assembly; 410-limit protrusions; 420-fixing seat; 421-fixing groove; 422-first openings; 430-filtering core; 440-fixing piece; 441-a second opening.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Example 1

Referring to fig. 1 and 2, the present embodiment provides a filter, which can be applied to any field requiring filtering impurities in a fluid, for example, the filter can be used in a liquid chromatograph. The filter includes a base assembly 100, a handle 300, and a fastening assembly 200. The base assembly 100 defines a slot 110 and a first fluid passage 120. Handle 300 has a mounting end 310 for mounting cartridge assembly 400, with mounting end 310 being insertable into slot 110. The fastening assembly 200 is detachably and fixedly connected with the base assembly 100. The fastening assembly 200 has an abutment end 210. The abutting end 210 can be inserted into the base assembly 100 to abut against the mounting end 310 and/or the filter element assembly 400 in the slot 110, so that the mounting end 310 and the filter element assembly 400 can be detachably fixed in the slot 110, the abutting end 210 is provided with a second fluid channel 211, and the filter element assembly 400 is communicated with the first fluid channel 120 and the second fluid channel 211 when being fixed in the slot 110.

In the filter provided by the embodiment of the utility model, when the filter is assembled, the filter element assembly 400 can be installed on the installation end 310 of the handle 300, and then the installation end 310 is inserted into the slot 110 of the base assembly 100, meanwhile, as the fastening assembly 200 and the base assembly 100 are detachably and fixedly connected, the abutting end 210 of the fastening assembly 200 can abut against the installation end 310 and/or the filter element assembly 400 in the slot 110 after being inserted into the base assembly 100 by moving and fixing the fastening assembly 200 towards the direction approaching to the filter element assembly 400, so that the installation end 310 and the filter element assembly 400 are detachably fixed in the slot 110, and the filter element assembly 400 is communicated with the first fluid channel 120 and the second fluid channel 211. When the filter element assembly 400 is replaced, the fastening assembly 200 can drive the abutting end 210 to move towards the direction far away from the filter element assembly 400 so as to cancel the abutting of the mounting end 310 and/or the filter element assembly 400, and then the handle 300 is pulled out so as to replace the filter element assembly 400, so that the base assembly 100 and the handle 300 provided with the filter element assembly 400 are designed in a drawer mode, the filter element assembly 400 can be replaced without moving the fastening assembly 200 and the base assembly 100 to be completely separated, the replacement difficulty of the filter element assembly 400 can be reduced, and convenience is brought to users.

Meanwhile, it should be noted that, the filter element assembly 400 and the handle 300 of the filter provided by the present utility model are easy to be disassembled, so that the filter and the filter element assembly 400 comprising the base assembly 100, the handle 300 and the fastening assembly 200 provided by the present utility model can be independent from each other in the process of production, sale, etc.

Optionally, the fastening assembly 200 is detachably and fixedly connected to the base assembly 100 by a threaded connection. The threaded connection of the two makes it possible to realize that the fastening assembly 200 drives the abutting end 210 to move towards a direction approaching or departing from the filter element assembly 400 by screwing the fastening assembly 200 to move relative to the base assembly 100, so as to realize that the abutting end 210 abuts against the mounting end 310 and/or the filter element assembly 400, or cancel the abutting end 210 abuts against the mounting end 310 and/or the filter element assembly 400, and the operation is simple. It will be appreciated that the detachable fixed connection between the fastening assembly 200 and the base assembly 100 is not limited to a threaded connection, but may be other detachable fixed connection, such as a sliding connection, and positioning is achieved by friction on a sliding surface of the sliding connection or by providing a limiting member on the sliding surface of the sliding connection.

When the mounting end 310 is inserted into the slot 110, the mounting end 310 can drive the filter element assembly 400 to move synchronously, so that the filter element assembly 400 corresponds to the positions of the first fluid channel 120 and the second fluid channel 211 respectively. Therefore, any removable connection that enables synchronous movement of the mounting end 310 and the cartridge assembly 400 may be used to mount the cartridge assembly 400 on the mounting end 310 without affecting the sealing connection of the cartridge assembly 400 to the slot 110 walls and the abutment end 210, respectively. Specifically, the detachable connection mode can be a magnetic attraction mode or a limit structure such as a groove and/or a protrusion.

Wherein, the side of the base assembly 100 away from the fastening assembly 200 may be inserted with the first connector 150. The first connector 150 communicates with the first fluid passage 120 when inserted into the base assembly 100. May be connected to an external other component (e.g., a source of liquid to be filtered or a filtered liquid use component) via the first connector 150. External other components such as a source of liquid to be filtered which can enter the filter for filtration via the first connector 150; the external other components may also be, for example, a downstream detection component or a filtrate collector, etc., and the filtered liquid can enter the downstream detection component via the first joint 150 for detection or storage in the filtrate collector.

The base assembly 100 may include an upper seat and a lower seat, the upper seat and the lower seat may be assembled by adopting a detachable connection manner such as a bolt connection, and the upper seat and the lower seat may be surrounded to form the slot 110, the abutting end 210 of the fastening assembly 200 may be disposed in the upper seat and the filter element assembly 400 in the slot 110 in an abutting manner, and the first fluid channel 120 may be disposed in the lower seat correspondingly. Furthermore, a locating pin can be arranged between the upper seat and the lower seat, and can play a foolproof role when the upper seat and the lower seat are assembled, so that the assembly errors of the upper seat and the lower seat are avoided.

Example two

As shown in fig. 3 and 4, in the first embodiment, the mounting end 310 is provided with a through hole 320 for mounting the filter element assembly 400, the through hole 320 has two opposite openings, and when the mounting end 310 is inserted into the slot 110 and the abutment end 210 is inserted into the base assembly 100, one of the openings is aligned with one of the openings of the first fluid channel 120, and the other opening is aligned with one of the openings of the second fluid channel 211.

Specifically, by installing the filter element assembly 400 in the through hole 320 of the mounting end 310, the filter element assembly 400 is detachably connected to the mounting end 310, so that the assembly and the disassembly can be facilitated.

In some embodiments, parameters such as a diameter, a shape, etc. of the through hole 320 may be set to be matched with the filter element assembly 400, so that a hole wall of the through hole 320 can be matched with the filter element assembly 400 or form interference fit with the filter element assembly 400, in this setting, since the hole wall of the through hole 320 surrounds the periphery of the filter element assembly 400, the hole wall of the through hole 320 can limit the filter element assembly 400 in a direction parallel to a cross section of the through hole 320, and when the mounting end 310 is inserted into the slot 110 and the abutting end 210 is inserted into the base assembly 100, positions of two holes, which are opposite to the through hole 320, of each of the first fluid channel 120 and the second fluid channel 211, close to a channel opening of the filter element assembly 400 respectively, are in one-to-one correspondence, so that the through hole 320 is set in a manner that the filter element assembly 400 can be accurately aligned with both the first fluid channel 120 and the second fluid channel 211 to achieve communication.

In some of these embodiments, the cross-sectional diameter of the abutment end 210 may be greater than the inner diameter of the through bore 320. By means of the arrangement, the abutting end 210 can be abutted with the edge of the through hole 320 in a sealing manner, and a sealed liquid containing cavity can be formed by enclosing the hole wall of the through hole 320, the end face of the abutting end 210 and the filter element assembly 400, so that the problem of leakage of fluid from the abutting end 210 to the mounting end 310 is avoided. Similarly, when the mounting end 310 is pressed by the abutting end 210 to make the edge of the through hole 320 close to the first fluid channel 120 abut against the groove wall of the slot 110, a sealed liquid containing cavity is also enclosed between the wall of the through hole 320, the groove wall of the slot 110 and the filter element assembly 400, so as to solve the problem of leakage of fluid from between the groove wall of the slot 110 and the mounting end 310. Accordingly, the arrangement of the through holes 320 is advantageous in improving the sealing performance.

It should be noted that the cross-sectional diameter of the abutment end 210 is not limited to be larger than the inner diameter of the through-hole 320, as shown in fig. 3, alternatively, in the illustrated embodiment, the abutment end 210 can be at least partially inserted into the through-hole 320 and abut against both the wall of the through-hole 320 and the filter element assembly 400.

Specifically, the cross-sectional diameter of the abutment end 210 may be set to be less than or equal to the inner diameter of the through-hole 320. In this arrangement, when the mounting end 310 drives the filter element assembly 400 to insert into the slot 110 to enable the filter element assembly 400 to be in a correct position, the abutting end 210 can be inserted into the through hole 320 and abut against the wall of the through hole 320 and the filter element assembly 400 respectively, and the abutting end 210 is just in a preset depth. On the contrary, when the mounting end 310 drives the filter element assembly 400 to be inserted into the slot 110 but the filter element assembly 400 is not at the correct position, the abutting end 210 cannot be inserted into the through hole 320 and can only abut against the edge of the through hole 320, and the abutting end 210 cannot be just at the preset depth. Therefore, during assembly, whether the filter element assembly 400 is installed in place can be determined by determining whether the abutting end 210 can just reach the preset depth, so as to determine whether the filter element assembly 400 corresponds to the position of the abutting end 210 and whether the abutting end 210 abuts against the filter element assembly 400.

Guide surfaces such as fillets or chamfers can be arranged between the edges of the through holes 320 near the abutting ends 210 and the hole walls thereof, so that the abutting ends 210 can slide into the through holes 320 along the guide surfaces. An interference fit may be adopted between the abutment end 210 and the wall of the through hole 320, so as to improve the tightness between the abutment end 210 and the wall of the through hole 320, and further improve the bearing capacity of the filter against larger atmospheric pressure or hydraulic pressure.

In the above embodiment, optionally, a limiting structure is disposed between the mounting end 310 and the filter element assembly 400, where the limiting structure is used to limit the filter element assembly 400 from sliding along the direction from one end to the other end of the through hole 320.

Specifically, the limiting structure may include a first limiting portion disposed at the mounting end 310 and a second limiting portion disposed at the filter element assembly 400, where the first limiting portion and the second limiting portion may be abutted to fix the filter element assembly 400 in the through hole 320, so as to prevent the filter element assembly 400 from falling from the through hole 320 due to gravity, and facilitate installation. Additionally, the first and second stop portions may also be used to limit circumferential rotation of the cartridge assembly 400 along the through bore 320.

As shown in fig. 3, in the above embodiment, optionally, the through hole 320 is a stepped hole, the first limiting portion is a step 321 on a wall of the through hole 320, and the second limiting portion is a limiting protrusion 410 disposed on a circumferential direction of the filter element assembly 400. The stop protrusion 410 can abut against the step 321 to prevent the cartridge assembly 400 from sliding out of the through hole 320 in the gravity direction. In the illustrated embodiment, the stop tab 410 is annular in shape and is disposed circumferentially about the cartridge assembly 400. When the limiting protrusion 410 abuts against the step 321, the limiting protrusion 410 is located at one side of the step 321 near the abutting end 210.

It will be appreciated that the limit structure is not limited to include the specific structure noted above, but may be other limit structures, such as: one of the walls of the filter element assembly 400 and the through hole 320 is provided with a limit groove, the other is provided with a limit block corresponding to the limit groove, and the limit block can be inserted into the limit groove so as to limit the filter element assembly 400 to slide along the direction from one end to the other end of the through hole 320; also for example: the filter element assembly 400 and the wall of the through hole 320 are limited by interference fit.

Example III

As shown in fig. 3 and 4, this embodiment proposes a manner of arranging the filter element assembly 400 on the basis of the first embodiment or the second embodiment. Optionally, the filter further includes a filter element assembly 400, the filter element assembly 400 includes a fixing base 420, a filter element 430 and a fixing member 440, the fixing base 420 can be accommodated in the slot 110, the fixing base 420 is provided with a fixing groove 421 for accommodating the filter element 430, the fixing member 440 is installed on the fixing base 420 and seals a notch of the fixing groove 421, the abutting end 210 can be inserted into the base assembly 100 and is in sealing connection with the fixing member 440, the filter element assembly 400 is clamped between the abutting end 210 and a slot wall of the slot 110, the fixing base 420 is provided with a first opening 422 capable of communicating the filter element 430 with the first fluid channel 120, and the fixing member 440 is provided with a second opening 441 capable of communicating the filter element 430 with the second fluid channel 211.

In the above embodiment, the fixing groove 421 is formed in the fixing seat 420, so that the filter element 430 and the fixing member 440 can be conveniently fixed and assembled, and the filter element 430 is sealed in the fixing groove 421 by the fixing seat 420 and the fixing member 440, so that the mechanical strength is higher than that of a conventional single filter element, and the filter element can bear larger fluid flow rate and pressure. During filtration, fluid may flow through first fluid passageway 120, first aperture 422, filter element 430, second aperture 441, and second fluid passageway 211 in that order. Of course, it is understood that the direction of flow during filtration is not limited to the above-noted direction, and fluid may also flow through the second fluid passage 211, the second opening 441, the filter element 430, the first opening 422, and the first fluid passage 120 in that order.

Specifically, in the illustrated embodiment, the fixing member 440 is partially received in the fixing groove 421, and is sealingly connected to the groove wall of the fixing groove 421, and the filter element 430 is clamped between the fixing member 440 and the groove bottom of the fixing groove 421. When the abutting end 210 is in sealing abutment with the fixing member 440, the clamping force of the bottom of the fixing member 440 and the bottom of the fixing groove 421 to the filter element 430 can be increased, and the sealing performance of the filter element assembly 400 can be improved.

Example IV

As shown in fig. 3, this embodiment proposes a manner of disposing the fastening assembly 200 on the basis of the third embodiment. Optionally, the abutment end 210 is provided with an abutment groove 212 adapted to the shape and position of the fixing member 440. When the abutting end 210 is in sealing abutment with the fixing member 440, the fixing member 440 can be inserted into the abutting groove 212.

By arranging the abutting groove 212, the fixing member 440 can be inserted into the abutting groove 212 when abutting against the abutting end 210, so that the second opening 441 of the fixing member 440 is accurately aligned with the second fluid channel 211, and meanwhile, the shape of the abutting groove 212 and the shape of the fixing member 440 are matched, so that the tightness between the fixing member 440 and the groove wall of the abutting groove 212 can be improved. In addition, when the fixing member 440 and the filter core 430 are made of elastic materials, when the pressure applied by the abutting end 210 is too large, the fixing member 440 and the filter core 430 can be slightly compressed by force, and the edge of the abutting groove 212 can abut against the fixing seat 420, so that the sealing performance is further improved.

Specifically, the abutment groove 212 may be located on an end face of the abutment end 210 that faces toward the cartridge assembly 400.

As shown in fig. 3, in the above embodiment, alternatively, a rounded corner or chamfer may be provided between the side wall of the abutment groove 212 and the edge of the abutment groove 212. The fixing member 440 can slide into the abutting groove 212 along the rounded corner or chamfer of the abutting groove 212, so that alignment efficiency between the fixing member 440 and the abutting groove 212 can be improved.

As shown in fig. 2 and 4, in the above-described embodiments, the fastening assembly 200 optionally includes a connector 220 and a top shaft 230. The base assembly 100 is provided with a screw groove 130, and the circumference of the connector 220 is provided with external screw threads matched with the screw groove 130, so as to realize the screw connection of the base assembly 100 and the fastening assembly 200. The connection end 231 of the top shaft 230 is inserted into the connector 220, the end of the top shaft 230 away from the connection end 231 is the abutment end 210, and the second fluid channel 211 extends along the axial direction of the top shaft 230.

Specifically, during assembly, the connector 220 and the top shaft 230 may be inserted into the threaded groove 130 of the base assembly 100 and the connector 220 is manipulated to rotate, such that the connector 220 drives the top shaft 230 to move in a direction approaching the slot 110. When the connection end 231 is fixedly inserted into the connector 220, the connection end 231 may be exposed out of the connector 220, so as to facilitate the communication between an external device and an end of the second fluid channel 211 near the connection end 231. For example: the second connector 280 may be inserted at the connection end 231 of the top shaft 230 and communicate with the second fluid passage 211.

As shown in FIG. 3, in the above embodiment, optionally, the external threads of the connector 220 have a nominal diameter D and the abutment end 210 has a diameter D, satisfying D/D.ltoreq.0.8. On the premise that the contact stressed area between the external thread of the connector 220 and the thread groove 130 is certain, the arrangement mode can reduce the stressed area between the abutting end 210 and the filter element assembly 400, so that the pressure of the contact surface between the abutting end 210 and the filter element assembly 400 is improved, and the filter can bear larger fluid pressure, for example, the filter can bear fluid pressure exceeding 35 Mpa.

As shown in fig. 2, in the above embodiment, optionally, the connector 220 or the top shaft 230 is provided with a first abutment portion, and the threaded groove 130 is provided with a second abutment portion, where the first abutment portion and the second abutment portion can abut to limit the movement of the fastening assembly 200 in a direction approaching the filter element assembly 400.

Specifically, during the process that the fastening assembly 200 moves towards the direction close to the filter element assembly 400, the first abutting portion and the second abutting portion can abut against each other, so that the abutting end 210 of the fastening assembly 200 is limited to move towards the direction close to the filter element assembly 400, the maximum pressure applied to the filter element assembly 400 by the abutting end 210 is limited, the risk of damage to the filter element assembly 400 caused by excessive extrusion is reduced, and the service life of the filter element assembly is prolonged. In addition, for the filter element assembly 400 having a certain elasticity, when the pressure of the filter element assembly 400 received by the abutting end 210 reaches a certain value (that is, when the filter element assembly 400 is in a compressed state to a certain extent at this time), the first abutting portion and the second abutting portion abut against each other, and the arrangement mode can enable the pressure applied to the filter element assembly 400 by the abutting end 210 to be in a proper range, so that the problem that the sealing performance is affected due to too small pressure between the abutting end 210 and the filter element assembly 400 can be improved, and the problem that the filter element assembly 400 is excessively extruded can be improved. The first abutting part and the second abutting part can respectively adopt limiting structures such as a bulge, a groove and the like according to actual conditions.

In the above embodiment, optionally, the first abutment is an end surface of the external thread of the connector 220 near the side of the filter element assembly 400, and the second abutment is an end surface of the internal thread of the thread groove 130 near the side of the filter element assembly 400. When the external threads of the connector 220 and the thread groove 130 are screwed together, that is, when the first abutting portion and the second abutting portion abut, the top shaft 230 is restricted from continuing to move in a direction approaching the cartridge assembly 400.

In the above embodiment, the internal threads of the thread groove 130 and the external threads of the connector 220 are both double-threaded, as an option. The double-threaded screw can increase the moving distance of the top shaft 230 when the connector 220 is screwed one turn, so that the fastening assembly 200 can be quickly installed and removed. Meanwhile, compared with single-thread threads, the external threads and the internal threads are set to be double-thread threads, so that the stress area of the external threads and the internal threads when the external threads and the internal threads are abutted against each other is increased, the problem that the stress surface deforms due to overlarge pressure is solved, and the service life is prolonged.

As shown in fig. 4 and 5, in the above embodiment, optionally, the fastening assembly 200 further includes a stopper 250 detachably connected to the connection end 231, the top shaft 230 is provided with an abutment protrusion 232 in a circumferential direction, and the connector 220 is located between the stopper 250 and the abutment protrusion 232.

Specifically, during assembly, the connection end 231 may be inserted through the connector 220, and the limiting member 250 may be detachably connected to the connection end 231, so that the limiting member 250 may be matched with the abutment protrusion 232 to limit the connector 220 in the axial direction of the top shaft 230. The limiting member 250 may be a snap spring, and the connecting end 231 may be provided with a groove for clamping the snap spring.

As shown in fig. 5 and 6, in the above embodiment, the fastening assembly 200 may further include a presser 260 and a handle 270, wherein the presser 260 is shaped like a clip and is disposed around the circumference of the connector 220, and the handle 270 is connected to both opposite ends of the presser 260 to fix the relative positions of the presser 260 and the connector 220.

Specifically, during assembly, the presser 260 is disposed around the connector 220, and is connected to two opposite ends of the presser 260 through the handle 270, so that the presser 260 abuts against the connector 220, so as to fix the relative positions of the presser 260 and the connector 220 through friction force. Meanwhile, the arrangement mode can facilitate the production personnel to adjust the direction of the handles 270 in the circumferential direction of the connector 220 in the assembly process, so that the directions of the handles 270 of the same batch of produced products can be the same, and the consistency of the products is improved.

Example five

As shown in fig. 5 and 6, the present embodiment further defines the technical solution on the basis of the first to fourth embodiments. In the above embodiment, optionally, the base assembly 100 is provided with a magnetic member 140 capable of interacting with the mounting end 310 to drive the mounting end 310 against the groove wall of the slot 110, so that the cartridge assembly 400 corresponds to the positions of the first fluid channel 120 and the second fluid channel 211, respectively.

The above arrangement makes the mounting end 310 slide in the direction approaching to the magnetic member 140 and abut against the slot wall of the slot 110 under the action of the magnetic member 140 when the mounting end 310 is inserted into the slot 110, and the filter element assembly 400 on the mounting end 310 can be precisely aligned with the second fluid channel 211. The arrangement mode can improve the alignment efficiency. Wherein the interaction may be magnetic attraction. Specifically, the mounting end 310 may be made of a material that can magnetically attract the magnetic member 140, such as iron, cobalt, or nickel, or a material with magnetism, such as a magnet. The interaction is not limited to the magnetic attraction, but may be the magnetic repulsion.

As shown in fig. 5 and 6, in the above embodiment, alternatively, the direction of the force generated when the magnetic member 140 magnetically attracts the mounting end 310 is substantially parallel to the sliding direction when the handle 300 is inserted into the slot 110. This arrangement allows the mounting end 310 to be quickly mounted in place when the magnetic member 140 is positioned in the sliding direction of the handle 300, facilitating assembly and improving assembly efficiency.

In the above embodiment, optionally, the bottom surface of the slot 110 is provided with a drain hole. The arrangement of the drain hole enables impurities remained in the slot 110 to be washed and discharged through the drain hole when the slot 110 is washed, so that the cleaning efficiency is improved.

Example six

Another embodiment of the present utility model provides a detection apparatus comprising a filter according to any of the above embodiments.

The type of the detection device is not limited, and may be, for example, a liquid chromatograph, a glycosylated hemoglobin analyzer, or the like, or may be other devices that can require filtration.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A filter, comprising:

the base assembly is provided with a slot and a first fluid channel;

a handle having a mounting end for mounting a cartridge assembly, the mounting end being insertable into the slot;

the fastening component is detachably and fixedly connected with the base component and is provided with an abutting end, the abutting end can be inserted into the base component and the mounting end in the slot and/or the filter element component is/are abutted to each other, so that the mounting end and the filter element component are detachably fixed in the slot, the abutting end is provided with a second fluid channel, and the filter element component is communicated with the first fluid channel and the second fluid channel when being fixed in the slot.

2. The filter of claim 1, wherein the mounting end defines a through bore for mounting the filter element assembly, the through bore having two opposing apertures, one of the apertures being aligned with a port of the first fluid passageway and the other of the apertures being aligned with a port of the second fluid passageway when the mounting end is inserted into the slot and the abutment end is inserted into the base assembly.

3. The filter of claim 2, wherein the abutment end is at least partially insertable into the through-hole and abuts both a wall of the through-hole and the cartridge assembly;

and/or a limiting structure is arranged between the mounting end and the filter element assembly, and the limiting structure is used for limiting the filter element assembly to slide along the direction from one end to the other end of the through hole.

4. The filter according to any one of claims 1 to 3, further comprising the filter element assembly, the filter element assembly comprising a fixing base, a filter element and a fixing member, the fixing base being receivable in the slot, the fixing base being provided with a fixing groove for receiving the filter element, the fixing member being mounted on the fixing base and sealing a notch of the fixing groove, the abutment end being insertable into the base assembly and being in sealing connection with the fixing member and holding the filter element assembly between the abutment end and a groove wall of the slot, the fixing base being provided with a first opening capable of communicating the filter element with the first fluid passage, the fixing member being provided with a second opening capable of communicating the filter element with the second fluid passage;

further, an abutting groove matched with the position and the shape of the fixing piece is formed in one side, facing the filter element assembly, of the abutting end.

5. The filter of claim 1, wherein the fastening assembly comprises a connector and a top shaft, the base assembly is provided with a threaded groove, an external thread matched with the threaded groove is arranged on the periphery of the connector, a connecting end of the top shaft is inserted into the connector, one end, far away from the connecting end, of the top shaft is the abutting end, and the second fluid channel extends along the axis direction of the top shaft.

6. The filter of claim 5, wherein the external thread has a nominal diameter D and the abutment end has a diameter D, satisfying D/d.ltoreq.0.8.

7. The filter of claim 5, wherein the connector or the top shaft is provided with a first abutment and the threaded groove is provided with a second abutment, the first abutment and the second abutment being capable of abutting to limit movement of the fastening assembly in a direction toward the filter element assembly;

and/or, the fastening assembly further comprises a limiting piece detachably connected with the connecting end, an abutting protrusion is arranged on the circumference of the top shaft, and the connector is located between the limiting piece and the abutting protrusion.

8. The filter of any one of claims 5 to 7, wherein the fastening assembly further comprises a clamp spring-like and circumferentially surrounding the connector, and a handle connected to both opposite ends of the clamp to fix the relative positions of the clamp and the connector.

9. A filter according to claim 1, wherein the base assembly is provided with a magnetic member capable of interacting with the mounting end to drive the mounting end into abutment with the slot wall of the slot.

10. A detection apparatus comprising a filter according to any one of claims 1 to 9.