CN208996968U - A kind of rear cover for magnetic drive pumping - Google Patents

Abstract

The utility model discloses a kind of rear covers for magnetic drive pumping, it includes rear cover ontology and circular metal backing, the rear cover ontology includes the first lid and the second lid, first lid is in barrel-shaped, second lid is annular in shape, the excircle of second lid is equipped with annulus dent, the one side of second lid towards the first lid is equipped with ring groove, the metal backing is placed on first lid and is located in the ring groove, and the outer diameter of the metal backing is equal with the outer diameter of the ring groove；By constantly during productive experiment, it is covered it was found that increasing after a circular metal backing is set in, keeps rear cover stress stronger, rear cover will not deform when carrying out the operation of high temeperature chemistry medical fluid, avoid result in liquid leakage, while more compact structure, firm；And setting annulus dent and sealing ring cooperation are covered after, sealing effect is stronger, more longlasting.

Description

A kind of rear cover for magnetic drive pumping

Technical field

The utility model relates to magnetic drives to pump technical field, after a kind of pumping for magnetic drive Lid.

Background technique

In the prior art, it is applied on chemical filter commonly using magnetic drive pumping, and is carrying out high temperature chemical industry medicine When liquid filters, the rear cover in magnetic drive pumping causes close the phenomenon that deforming in use for some time because of high temperature Envelope effect is bad, and the generation of liquid leakage corrodes other components so as to cause medical fluid, while in the prior art, although rear Lid is simply arranged with sealing ring, and still, after a period of use, the sealing effect of sealing ring can also reduce.

Summary of the invention

The purpose of the utility model is to overcome disadvantages described above, after a kind of pumping for magnetic drive is provided Lid.

To achieve the above object, the concrete scheme of the utility model is as follows:

A kind of rear cover for magnetic drive pumping, including rear cover ontology, the rear cover ontology include the first lid and the Two lids, first lid is in barrel-shaped, and second lid is annular in shape, the inner wall of second lid and described first One end of lid connects, and the bottom surface of first lid is equipped with fixing pipe, and the fixing pipe and the first lid, which are integrally formed, to be arranged, The fixed inside pipe wall is fixed with sealing ring, and the excircle of second lid is equipped with step, and it is recessed that the step is equipped with annulus The one side of trace, second lid towards the first lid is equipped with ring groove；It further include circular metal backing, the metal Backboard is placed on first lid and is located in the ring groove, the outer diameter of the metal backing and the ring groove Outer diameter is equal.

The utility model, further, first lid and the second lid are integrally formed and are arranged.

The utility model is further equidistantly provided with several stiffeners, several reinforcements in the ring groove One end of item is fixedly connected with the first lid, and the other end is connect with the second lid.

The utility model has the following beneficial effects: by constantly during productive experiment, discovery increase by one it is circular Metal backing covers after being set in, and keeps rear cover stress stronger, and when carrying out the operation of high temeperature chemistry medical fluid, rear cover will not become Shape, avoids result in liquid leakage, while more compact structure, firm；And setting annulus dent and sealing ring cooperation are covered after, it is close It is stronger, more longlasting to seal effect.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram at another visual angle of the utility model；

Fig. 3 is the structural schematic diagram at another visual angle of the utility model；

Fig. 4 is the decomposition diagram of the utility model；

Fig. 5 is the enlarged diagram in Fig. 3 at I；

Description of symbols: 1- rear cover ontology；The first lid of 11-；111- fixing pipe；The second lid of 12-；121- step； 1211- annulus dent；122- ring groove；2- sealing ring；3- metal backing；4- stiffener.

Specific embodiment

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, is not that this is practical Novel practical range is confined to this.

As shown in Figures 1 to 5, a kind of rear cover for magnetic drive pumping described in the present embodiment, including rear cover ontology 1, the rear cover ontology 1 includes the first lid 11 and the second lid 12, and first lid 11 is in barrel-shaped, second lid 12 is annular in shape, and the inner wall of second lid 12 is connect with one end of first lid 11, the bottom of first lid 11 Face is equipped with fixing pipe 111, and the fixing pipe 111 and the first lid 11, which are integrally formed, to be arranged, and 111 inner wall of fixing pipe is fixed with Sealing ring 2, when assembling, extraneous central spindle is inserted on the sealing ring 2, and the excircle of second lid 12 is equipped with step 121, institute Step 121 is stated equipped with annulus dent 1211, when assembling, sealing ring is placed on the step 121, in actual application In, discovery is provided with the rear cover of annulus dent 1211, and sealing effect is more preferable, and the service life is longer for sealing ring, and described second The one side of lid 12 towards the first lid 11 is equipped with ring groove 122；It further include circular metal backing 3, the metal back Plate 3 is placed on first lid 11 and is located in the ring groove 122, the outer diameter and the annulus of the metal backing 3 The outer diameter of groove 122 is equal, assembling when, increase metal backing 3 make the second lid 12 in rear cover indirectly with extraneous pump mount base It reclines, structure is stronger, avoids the direct extruding when installing magnetic force driving pump front cover and pump mount base to the second lid 12, causes Second lid 12 deforms in the case of a high temperature, leads to liquid leakage, and metal backing 3 is bonded tighter, sealing with pump mount base Effect is more preferable；Preferably, first lid 11 and the second lid 12, which are integrally formed, is arranged, and structure is stronger.

As shown in figure 4, further, being arranged at equal intervals in the ring groove 122 on the basis of based on the above embodiment There are several stiffeners 4, one end of several stiffeners 4 is fixedly connected with the first lid 11, the other end and the second lid 12 Connection, it is preferable that the stiffener 4 and the first lid 11, the second lid 12 are integrally formed and are arranged, and structure is stronger.

The present embodiment increases a circular metal backing 3, keeps rear cover stress stronger, avoids carrying out high temeperature chemistry medicine It is deformed when liquid operation, leads to liquid leakage, it is more compact structure, firm；Annulus dent 1211 is arranged simultaneously to match with sealing ring It closes, enhances sealing effect；The present embodiment is the fruit of labour of innovation and creation constantly in pilot production.

The above is only a preferred embodiment of the utility model, therefore all according to the utility model patent application range institute The equivalent change or modification that the structure, feature and principle stated is done, in the protection scope of the utility model patent application.

Claims (3)

1. a kind of rear cover for magnetic drive pumping, it is characterised in that: including rear cover ontology (1), rear cover ontology (1) packet Include the first lid (11) and the second lid (12), for first lid (11) in barrel-shaped, second lid (12) is in annulus Shape, the inner wall of second lid (12) are connect with one end of first lid (11), the bottom surface of first lid (11) Equipped with fixing pipe (111), the fixing pipe (111) and the first lid (11) are integrally formed and are arranged, fixing pipe (111) inner wall It is fixed with sealing ring (2), the excircle of second lid (12) is equipped with step (121), and the step (121) is equipped with annulus The one side of dent (1211), second lid (12) towards the first lid (11) is equipped with ring groove (122)；It further include annulus The metal backing (3) of shape, the metal backing (3) are placed on first lid (11) and are located at the ring groove (122) Interior, the outer diameter of the metal backing (3) is equal with the outer diameter of the ring groove (122).

2. a kind of rear cover for magnetic drive pumping according to claim 1, it is characterised in that: first lid (11) it is integrally formed and is arranged with the second lid (12).

3. a kind of rear cover for magnetic drive pumping according to claim 1, it is characterised in that: the ring groove (122) it is equidistantly provided with several stiffeners (4) in, one end and the first lid (11) of several stiffeners (4) are fixed to be connected It connects, the other end is connect with the second lid (12).