Hollow type connecting joint and filtering machine

Abstract

The connector is applied to connection of a filter element and a pattern plate of the filter and comprises a hollow plastic connector body, an abutting portion is arranged in the middle of the plastic connector body in an outward protruding mode, and a metal reinforcing piece is embedded in the plastic connector body. And the metal reinforcers respectively extend to the two ends of the joint from the abutting parts. The connector has the outstanding effects that the connector is formed by embedding the injection molding metal piece in the plastic connector body, so that the strength of the connector is greatly improved under the condition that the corrosion resistance is ensured, and the practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of filter accessories, and in particular relates to a hollow connecting joint and a filter. Background Art

[0002] A filter is a device that uses a porous filter element to achieve solid-liquid separation. Filters are used in chemical, petroleum, pharmaceutical, light industry, food, mineral processing, coal and water treatment sectors. In industrial production processes, microporous filters are widely used. Usually, a filter includes a body and multiple filter elements placed in the body. The upper ends of the filter elements are connected to the flower plate through connecting joints, and the filtrate after filtering by the filter element flows out from the liquid collection port for collection. Since the filter material may be corrosive, the existing connecting joints are made of polytetrafluoroethylene material. However, it is precisely because of the limited strength of this material that it is found in actual applications that when the filter element is used for a long time and filter residue accumulates on the surface of the filter element, the connecting joint is prone to breakage. The longer the filter element, the higher the probability of its connecting joint breaking, which affects the filtration efficiency. Therefore, how to strengthen the strength of the connecting joint has become a technical problem that needs to be solved at present. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a hollow connecting joint and a filter, which can improve the strength of the connecting joint while being corrosion-resistant.

[0004] The purpose of this utility model will be achieved through the following technical solutions:

[0005] A hollow connecting joint is used to connect the filter element and the flower plate of the filter machine, including a hollow plastic joint body, a buttress protruding outward from the middle of the plastic joint body, and a metal reinforcement embedded in the plastic joint body. The metal reinforcement extends from the buttress to both ends of the joint.

[0006] Preferably, the surface of the plastic joint body is processed with connecting threads, and the plastic connecting joint body includes a first section connected to the filter element and a second section connected to the flower plate, the abutment is placed between the first section and the second section, and the metal reinforcement extends from the first section through the abutment into the second section.

[0007] Preferably, the length of the metal reinforcement in the second section is greater than the thickness of the flower plate.

[0008] Preferably, the second section of the plastic joint body is connected to the flower plate, a sealing gasket is provided between the flower plate and the abutting portion, and the length of the metal reinforcement in the second section is greater than the sum of the thicknesses of the flower plate and the sealing gasket.

[0009] Preferably, the metal reinforcement is a metal tube, and a through hole is opened on the surface of the metal tube.

[0010] Preferably, the metal tube and the plastic joint body are insert-injection molded.

[0011] A filter comprising any one of the above hollow connecting joints.

[0012] The outstanding effect of the utility model is that the joint is formed by inserting the metal part into the plastic joint body, which greatly improves the strength of the joint while ensuring corrosion resistance, and has strong practicality.

[0013] The specific implementation methods of the present invention will be further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the connecting joint structure of the present utility model.

[0016] Figure 2 This is a schematic structural diagram of another threaded connection joint of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the utility model when in use. DETAILED DESCRIPTION

[0018] The utility model discloses a hollow connection joint, combined with Figure 1-Figure 3 As shown, it is used to connect the filter element 5 and the flower plate 7 of the filter. It includes a hollow plastic joint body, and the middle part of the plastic joint body is provided with an abutment portion 3 protruding outward. The surface of the plastic joint body is processed with a connecting thread. In the utility model, Figure 1 and Figure 2Two different thread forms are illustrated. The plastic connector body specifically comprises a first section 2 connected to the filter element 5 and a second section 1 connected to the flower plate 7. The abutment portion 3 is positioned between the first and second sections 2 and 1. To enhance the strength of the connector, a metal reinforcement 4 is embedded within the plastic connector body, extending from the abutment portion to each end of the connector. The metal reinforcement 4 is a metal tube, integrally formed with the plastic connector body using insert injection molding. To enhance connection stability and strength, the metal reinforcement 4 is uniformly distributed on its surface with through holes.

[0019] The metal reinforcement 4 of the present invention is a metal tube, which can be placed in the plastic joint body in two different forms. For example, it can be placed in the plastic joint body in the form of a metal ring, or it can be placed in the outer ring of the hollow center of the plastic joint body by using multiple metal tubes.

[0020] The following is a further explanation using a metal tube with a metal ring as an example.

[0021] The metal reinforcement 4 extends from the first section 2 through the abutment portion into the second section 1. The length of the metal reinforcement 4 within the second section 1 is greater than the thickness of the flower plate 7. Furthermore, a sealing gasket 6 is typically provided when the flower plate is connected to the connecting joint to ensure tightness. When the flower plate is tightened with a nut, the length of the metal reinforcement within the second section 1 is greater than the sum of the thicknesses of the flower plate 7 and the sealing gasket, meaning that its distal end extends slightly to the location where the nut is tightened to connect the joint. The length of the metal reinforcement 4 within the first section 2 is typically sufficient to extend slightly into the filter element. The reason for this length setting is that the connection between the flower plate, filter element, and joint is a fragile area, requiring the joint's strength to be strengthened. Generally, the longer the filter element, the more leverage will be created above and below the joint, making it more susceptible to breakage. Therefore, the length of the metal reinforcement extending into the second section can be appropriately extended. Experiments have shown that connecting joints with metal reinforcements can increase their fracture resistance by more than ten times compared to existing connecting joints.

[0022] The present invention also discloses a filter comprising any of the above-described hollow connectors. The filter comprises a body, a filter element disposed within the body, and the filter element connected to a flower plate via the connector described herein. The filter operates in the same manner as conventional filters and will not be further described herein.

[0023] Finally, it should be noted that terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on the positions shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific manner. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A hollow connector used to connect filter elements and flower plates in a filter, characterized by: The invention comprises a hollow plastic joint body, wherein a butt joint is protruding outward from the middle of the plastic joint body, and a metal reinforcement is embedded in the plastic joint body, and the metal reinforcement extends from the butt joint to both ends of the joint.

2. A hollow connection joint according to claim 1, characterized in that: The surface of the plastic joint body is processed with connecting threads. The plastic connecting joint body includes a first section connected to the filter element and a second section connected to the flower plate. The abutment portion is placed between the first section and the second section, and the metal reinforcement extends from the first section through the abutment portion into the second section.

3. A hollow connection joint according to claim 2, characterized in that: The length of the metal reinforcement in the second section is greater than the thickness of the flower plate.

4. A hollow connection joint according to claim 3, characterized in that: The second section of the plastic joint body is connected to the flower plate, a sealing gasket is provided between the flower plate and the abutting portion, and the length of the metal reinforcement in the second section is greater than the sum of the thicknesses of the flower plate and the sealing gasket.

5. The hollow connection joint according to claim 1, characterized in that: The metal reinforcement is a metal tube, and a through hole is opened on the surface of the metal tube.

6. The hollow connection joint according to claim 5, characterized in that: The metal pipe and the plastic joint body are insert-injection-molded.

7. A filter, characterized in that: It comprises a hollow connecting joint as claimed in any one of claims 1 to 6.

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