Assembly structure and assembly method for filter cup and filter head of solvent filter

Abstract

The invention belongs to the technical field of laboratory appliances, and relates to an assembly structure of a filter cup and a filter head of a solvent filter, the assembly structure comprises the filter cup, the filter head, a threaded connection sleeve and an extrusion rubber ring, an internal thread is arranged on the inner wall of the threaded connection sleeve, and a clamping groove is formed in the inner wall of the lower part of the threaded connection sleeve; an external thread is arranged on the outer wall of the bottom of the filter cup; the filter head is sleeved in the threaded connecting sleeve, and an extrusion rubber ring is arranged at the lower part of the filter head. The invention also relates to an assembly method, which comprises the following steps: sleeving the extrusion rubber ring on the filter head; sleeving the filter head sleeved with the extrusion rubber ring from the bottom of the threaded connection sleeve; the extrusion rubber ring sleeved on the filter head is plugged into the threaded connection sleeve, so that the extrusion rubber ring is arranged in the clamping groove of the threaded connection sleeve; and the filter cup is in threaded connection with the upper half part of the threaded connection sleeve. The assembly structure for the filter cup and the filter head of the solvent filter has the advantages of convenience in assembly, reliability in connection, capability of improving experiment efficiency and easiness in implementation, and has relatively high innovativeness.

Description

Technical Field

[0001] The invention belongs to the technical field of laboratory supplies and relates to a solvent filter, in particular to an assembly structure and an assembly method of a filter cup and a filter head of a solvent filter. Background Art

[0002] Solvent filters are laboratory supplies commonly used in chemical laboratories, which are usually composed of a solvent filter bottle device and a vacuum pump. The solvent filter bottle device includes a triangular liquid collection bottle (1000ml or 2000ml), a sand core filter head, a filter cup (300ml or 500) and an aluminum alloy fixing clip. The sand core filter head and the filter cup are clamped and connected by the aluminum alloy fixing clip, and the sand core filter head is placed on the triangular liquid collection bottle.

[0003] For example, the utility model patent with publication number CN207871669U discloses a solvent filtering device, in which the filter cup and the filter head are clamped by an aluminum alloy clip.

[0004] However, this connection method has the following disadvantages: 1. It is difficult to assemble. You need to align the filter cup and the filter head first, then open the clip and clamp it, which is inconvenient to operate; 2. The aluminum alloy clip needs to be configured separately. If it is not stored properly and the clip is lost, it will affect the filtering operation. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an assembly structure for a solvent filter cup and a filter head which is convenient to assemble, has reliable connection, improves experimental efficiency and is easy to implement.

[0006] The present invention solves the technical problem by adopting the following technical solutions:

[0007] A solvent filter filter cup and filter head assembly structure, comprising a filter cup and a filter head, characterized in that: it also comprises a threaded connection sleeve and an extruded rubber ring, wherein the threaded connection sleeve is a ring body with upper and lower openings, an internal thread is arranged on the inner wall of the upper half of the ring body, and a clamping groove is arranged on the inner wall of the lower part of the ring body;

[0008] The outer wall of the bottom of the filter cup is provided with an external thread matched with the internal thread on the threaded connection sleeve;

[0009] The filter head is inserted into the threaded connection sleeve, an extrusion rubber ring is arranged at the lower part of the filter head, the extrusion rubber ring is limited in the clamping groove, and the upper end of the threaded connection sleeve is threadedly connected with the filter cup.

[0010] Moreover, a film taking notch with an opening facing upward is provided on the sleeve wall of the threaded connection sleeve.

[0011] Furthermore, anti-slip grooves are provided on the outer wall of the threaded connection sleeve.

[0012] A method for assembling a filter cup and a filter head of a solvent filter, characterized in that it comprises the following steps:

[0013] Step 1, put the extruded rubber ring on the filter head;

[0014] Step 2, insert the filter head with the extruded rubber ring into the bottom of the threaded connection sleeve;

[0015] Step 3, insert the extruded rubber ring on the filter head into the interior of the threaded connection sleeve, so that the extruded rubber ring is placed in the clamping groove of the threaded connection sleeve, thereby completing the positioning of the filter head in the threaded connection ring;

[0016] Step 4: Thread the filter cup onto the upper part of the threaded sleeve.

[0017] Moreover, after the filter cup and the filter head are assembled, the bottom of the membrane taking notch is located at the lower part of the plane of the filter head.

[0018] The advantages and positive effects of the present invention are:

[0019] 1. The assembly structure and assembly method of the filter cup and filter head of the solvent filter are such that the assembly of the filter head and the threaded connection sleeve is completed when the filter cup and the filter head are shipped from the factory. When in use, the filter cup and the filter head can be directly threaded together, which is simple and convenient, and greatly improves the assembly efficiency of the filter cup and the filter head.

[0020] 2. The assembly structure and assembly method of the filter cup and filter head of the solvent filter facilitate the removal of the filter membrane through the setting of the mold removal notch, ensuring the smooth progress of the experiment.

[0021] 3. The assembly structure and assembly method of the filter cup and filter head of the solvent filter facilitate the screwing of the threaded connection sleeve by setting the anti-slip grooves on the threaded connection sleeve, making the assembly of the filter cup and the filter head more efficient.

[0022] 4. The invention is scientifically and reasonably designed, has the advantages of convenient assembly, reliable connection, improved experimental efficiency, and easy implementation. It is an assembly structure and assembly method of a solvent filter cup and a filter head with high innovation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a cross-sectional view of the present invention;

[0024] Figure 2 for Figure 1 A magnified view of part A;

[0025] Figure 3 It is a structural schematic diagram of the threaded connection sleeve of the present invention;

[0026] Figure 4 It is a cross-sectional view of the threaded connection sleeve of the present invention.

[0027] Description of Reference Numerals

[0028] 1-filter cup, 2-filter head, 3-threaded connection sleeve, 4-extrusion rubber ring, 5-membrane removal notch, 6-internal thread, 7-card mounting groove. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0030] A solvent filter filter cup and filter head assembly structure, comprising a filter cup 1 and a filter head 2, the filter cup and the filter head are butt-jointed up and down, and an outwardly horizontally flanged edge is provided at one end of the butt joint of the filter cup and the filter head, and the innovation thereof is that: it also comprises a threaded connection sleeve 3 and an extruded rubber ring 4 for limiting the filter head, the threaded connection sleeve is a ring body with upper and lower openings, an internal thread 6 is provided on the inner wall of the upper half of the ring body, and a clamping groove 7 is provided on the inner wall of the lower half of the ring body;

[0031] An outer wall of the flange of the filter cup that is horizontally turned outward is provided with an outer thread that matches the inner thread of the threaded connection sleeve;

[0032] The eaves of the filter head with horizontal outward flanges are inserted into the interior of the threaded connection sleeve, and an extrusion rubber ring is provided at the lower part of the eaves of the filter head with horizontal outward flanges. The extrusion rubber ring is limited in the clamping groove, and the upper end of the threaded connection sleeve is threadedly connected to the filter cup. In this specific embodiment, the cross-section of the extrusion rubber ring is an inverted L-shaped structure, one end of the horizontal part of the L-shaped structure is limited at the bottom of the filter head, and the other end is limited in the clamping groove. The vertical part of the L-shaped structure realizes the extrusion of the filter head after assembly, thereby completing the limitation of the filter head on the threaded connection sleeve.

[0033] When the filter cup and the filter head are assembled, a filter membrane will be arranged on the filter head. In order to facilitate the removal of the filter membrane, a membrane removal notch 5 with an opening facing upward is provided on the sleeve wall of the threaded connection sleeve of the present invention. When removing the membrane, a clamp can be used to pass through the membrane removal notch to smoothly clamp out the filter membrane, thereby avoiding the problem that the filter residue on the filter membrane is shaken off due to the tilt of the filter membrane, thereby affecting the experimental analysis.

[0034] In order to facilitate the screwing of the threaded connection sleeve, anti-slip grooves are provided on the outer wall of the threaded connection sleeve.

[0035] A method for assembling a filter cup and a filter head of a solvent filter, the innovation of which is that it comprises the following steps:

[0036] Step 1, put the extruded rubber ring on the filter head;

[0037] Step 2: insert the filter head with the extruded rubber ring (the end of the filter head with the horizontal flange turned outward) from the bottom of the threaded connection sleeve;

[0038] Step 3, insert the extruded rubber ring on the filter head into the interior of the threaded connection sleeve using a tool (such as a flat-blade screwdriver), so that the extruded rubber ring is placed in the clamping groove of the threaded connection sleeve, thereby completing the positioning of the filter head in the threaded connection ring;

[0039] When used in a specific experiment, a filter membrane is set on the filter head;

[0040] Step 4: Thread the filter cup onto the upper part of the threaded sleeve.

[0041] After the filter cup and the filter head are assembled, the bottom of the membrane removal notch is located at the lower part of the plane of the filter head, which is convenient for clamping the exposed edge of the filter membrane.

[0042] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. An assembly structure of a solvent filter cup and a filter head, comprising a filter cup and a filter head, characterized in that: It also includes a threaded connection sleeve and an extruded rubber ring. The threaded connection sleeve is a ring body with upper and lower openings, an internal thread is provided on the inner wall of the upper half of the ring body, and a clamping groove is provided on the inner wall of the lower half of the ring body. The outer wall of the bottom of the filter cup is provided with an external thread matched with the internal thread on the threaded connection sleeve; The filter head is inserted into the threaded connection sleeve, an extrusion rubber ring is arranged at the lower part of the filter head, the extrusion rubber ring is limited in the clamping groove, and the upper end of the threaded connection sleeve is threadedly connected with the filter cup.

2. The assembly structure of a solvent filter cup and a filter head according to claim 1, characterized in that: A film taking notch with an upward opening is arranged on the sleeve wall of the threaded connection sleeve.

3. The assembly structure of a solvent filter cup and a filter head according to claim 1, characterized in that: Anti-slip grooves are arranged on the outer wall of the threaded connection sleeve.

4. A method for assembling a solvent filter cup and a filter head, characterized in that: The assembly method is implemented based on the assembly structure described in any one of claims 1 to 3, and comprises the following steps: Step 1, put the extruded rubber ring on the filter head; Step 2, insert the filter head with the extruded rubber ring into the bottom of the threaded connection sleeve; Step 3, insert the extruded rubber ring on the filter head into the interior of the threaded connection sleeve, so that the extruded rubber ring is placed in the clamping groove of the threaded connection sleeve, thereby completing the positioning of the filter head in the threaded connection ring; Step 4: Thread the filter cup onto the upper part of the threaded sleeve.

5. The method for assembling a solvent filter cup and a filter head according to claim 4, characterized in that: After the filter cup and the filter head are assembled, the bottom of the membrane taking notch is located at the lower part of the plane of the filter head.

Images