CN209414117U - Diaphragm unit and diaphragm pump - Google Patents

Abstract

The utility model relates to diaphragm pump technical fields, disclose diaphragm unit and diaphragm pump, including diaphragm, the inserts being fixed in diaphragm and the connecting rod that can be dismounted relative to inserts.It is formed with protrusion in the central part of diaphragm, is formed with the opening for inserts insertion in the upper surface of protrusion.Inserts includes top, the bar portion extended from top and the interconnecting piece extended from bar portion, and top and bar portion are inserted into opening.Multiple through-holes are formed at top, the cylindrical portion being inserted into multiple through-holes respectively is formed in the protrusion of diaphragm.Diaphragm unit provided by the utility model effectively prevents the cracking of the stress intersection of protrusion and diaphragm main body, the service life of diaphragm unit is greatly improved, and then improve the service life for being equipped with the diaphragm pump of diaphragm unit, to extend the maintenance period of diaphragm pump, labour cost and maintenance cost are significantly saved.

Description

Diaphragm unit and diaphragm pump

Technical field

The utility model relates to diaphragm pump technical field, in particular to a kind of diaphragm unit and diaphragm pump.

Background technique

Diaphragm pump as positive displacement pump one kind and be widely adopted.In turn, diaphragm unit is the important composition of diaphragm pump, film Piece pump is moved reciprocatingly in pump chamber using diaphragm, and the volume by changing working chamber in pump chamber, which is realized, carries out transmission medium Sucking and discharge, because of its good airproof performance, suction nozzle is high, is widely used in all trades and professions, as liquid, gas transfer pump or true Sky pump uses.

Referring to figure 1 and figure 2, existing diaphragm unit structure generally all includes diaphragm 100 and connecting rod 200, connecting rod 200 It is inserted directly into the opening of protrusion 101 102 of diaphragm 100.Diaphragm in diaphragm unit is in diaphragm pump work due to connecting rod It moves back and forth, the stress for moving generation will focus on the stress intersection A of protrusion 101 Yu 100 main body of diaphragm, eventually lead to Stress intersection A cracking, and be easily separated between diaphragm 100 and connecting rod 200 since pump ceaselessly moves reciprocatingly, it influences To the subsequent use of diaphragm unit, the service life of diaphragm unit is lower.

Utility model content

In order to solve the above-mentioned technical problem the utility model proposes, and it is an object of the present invention to provide a kind of diaphragm unit and diaphragm Pump.According to the utility model, the cracking of diaphragm main body and protrusion stress intersection is effectively prevented, diaphragm is greatly improved The service life of component.

Specifically, the utility model provides a kind of diaphragm unit, wherein including diaphragm, is fixed in the diaphragm Inserts and can relative to the inserts dismount connecting rod.

Diaphragm unit is installed by diaphragm, inserts and the sequentially connected mode of connecting rod, and the structure of each component is simple, assembly side Formula is convenient, dismounts convenient for operator.

In addition, preferably, the central part in the diaphragm is formed with protrusion, in the upper surface shape of the protrusion At the opening having for inserts insertion.

Inserts is installed by protrusion and diaphragm, and the opening size of protrusion is less than the maximum outside diameter size of inserts, embedding After part is inserted into protrusion, inserts is coated on wherein by protrusion.And the cavity profile in protrusion opening is matched with inserts, it is convenient The cavity of protrusion is precisely bonded with inserts.

Further, preferably, the inserts includes top, the bar portion extended from the top and prolongs from the bar portion The interconnecting piece stretched, the top and the bar portion are inserted into the opening.

Top and bar portion pass through in opening insertion protrusion, and protrusion is by way of cladding top and bar portion by inserts Rubber-wrapping structure is fixed and is formed, the interconnecting piece of inserts is connect with connecting rod, and connecting rod is connected to external electrical arbor.

In addition, being formed in the protrusion of the diaphragm preferably, be formed with multiple through-holes at the top The cylindrical portion being inserted into multiple through-holes respectively.

Diaphragm and inserts are combined by way of multiple through-holes and multiple cylindrical portion grafting, so that diaphragm and inserts are not easy to take off It falls, the connection of diaphragm and inserts with this configuration ensure that the function of diaphragm unit.

Further, preferably, the through-hole be formed completely through the top and in the bar portion formed with it is described The corresponding groove of through-hole, the protrusion are in gradually to successively decrease in the direction top external diameter from the diaphragm close to the top Structure.

That is size of the protrusion in the position close to top is greater than protrusion in the size of the position close to bar portion, protrusion Gradually successively decrease from the position close to top to the size of the position close to bar portion, is steadily coated on top in this way convenient for protrusion In portion, bar portion, it is unlikely to protrusion and top, bar portion position in motion process and is detached from.

Further, right in the inserts preferably, the inner wall in the protrusion has the snap ring outwardly protruded The position of the snap ring is answered to be formed with annular groove, when the inserts is fixed in the diaphragm, the snap ring and the annular groove card Connect cooperation.

By the cooperation of snap ring and annular groove, protrusion and inserts are fixed, it can be in protrusion and top, bar On the basis of portion's cooperation, further protrusion and inserts are fixed, so that the connection of protrusion and inserts is more stable, firm Gu.

In addition, preferably, the inserts is engaged through the thread with the connecting rod and realizes removable connection, described embedding The one end being connected in the interconnecting piece of part with the connecting rod is formed with tapped hollow cylindrical portion, in the connecting rod The one end being connected with the interconnecting piece of the inserts is formed with external screw thread, utilizes the internal screw thread and the externally threaded knot It closes and connect the connecting rod with the interconnecting piece of the inserts.

It is removable that inserts and connecting rod are connected through a screw thread mode, and convenient for assembly, certain inserts and connecting rod can also pass through it He assembles at removable connection type.

The utility model provides a kind of diaphragm pump simultaneously, wherein including diaphragm unit described in any one of above scheme.

Compared to existing technologies, diaphragm unit provided by the utility model can effectively slow down protrusion and diaphragm master The cracking of the stress intersection of body, is greatly improved the service life of diaphragm unit, and then improves and be equipped with diaphragm unit Diaphragm pump service life, to extend the maintenance period of diaphragm pump, significantly save labour cost and maintenance at This.

Detailed description of the invention

Fig. 1 is the explosive view of the diaphragm unit of the prior art；

Fig. 2 is the perspective view of the diaphragm unit of the prior art；

Fig. 3 is the explosive view of the diaphragm unit of present embodiment；

Fig. 4 is the cross-sectional view of the diaphragm unit of present embodiment；

Fig. 5 is the perspective view perspective view of the explosion of the diaphragm unit of present embodiment；

Fig. 6 is the perspective view of the diaphragm unit of present embodiment.

Description of symbols:

1, diaphragm；2, inserts；3, connecting rod；4, protrusion；5, through-hole；6, cylindrical portion；7, snap ring；8, annular groove；21, top； 22, bar portion；23, interconnecting piece；24, hollow cylindrical portion；31, axis hole；32, male end axis hole；41, it is open；42, cavity；51, recessed Slot；100, diaphragm；101, protrusion；102 openings；200, connecting rod；A, stress intersection；B, stress intersection.

Specific embodiment

With reference to the accompanying drawings of the specification, the utility model is described in further detail.It is schematically simple in attached drawing Change the structure etc. shown.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be Concrete meaning in the present invention.

In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it "lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above " One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special Sign includes fisrt feature right above second feature and oblique upper under the second feature " below ", " below " and " below ", or only Indicate that first feature horizontal height is less than second feature.

Referring to shown in Fig. 3, Fig. 5 and Fig. 6, the embodiments of the present invention provides a kind of diaphragm unit, diaphragm unit Including diaphragm 1, the inserts being fixed in diaphragm 12 and the connecting rod 3 that can be dismounted relative to inserts 2.In the central portion of diaphragm 1 Swell is formed with protrusion 4 outward for position, is formed in the upper surface (i.e. relative to the one side installed with inserts 2) of protrusion 4 The opening 41 being inserted into for inserts 2.The intersection of 1 main body of diaphragm and protrusion 4 be stress intersection B (in Fig. 1 in the prior art The stress intersection location A of diaphragm unit is identical), it is the intersection that stress is concentrated in diaphragm unit work, stress mistake at this Stress intersection can crack when big, influence the subsequent use of diaphragm unit, and then influence the work of entire diaphragm pump.

Compared with the existing technology, the diaphragm unit in present embodiment is sequentially connected by diaphragm 1, inserts 2 and connecting rod 3 Mode is installed, the structure of each component all very simples, and the assembly technology between each component is very convenient, need to be only inserted into inserts 2 In diaphragm 1, while inserts 2 and connecting rod 3 being attached, is dismounted convenient for operator.Inserts 2 passes through protrusion 4 and film Piece 1 install, it is preferable that 41 size of opening of protrusion 4 be less than inserts 2 maximum outside diameter size (opening 41 sizes be equal to or Greater than the maximum outside diameter size of inserts 2, opening 41 and inserts 2 loosens, separates when will lead to diaphragm unit work), in inserts 2 After being inserted into protrusion 4, inserts 2 can firmly be waled by opening 41 and is coated on wherein by protrusion 4.Further, protrusion 42 profile of cavity in the opening of portion 4 41 matches (i.e. the profile of cavity 42 is consistent with the outer profile of inserts 2) with inserts 2, this Just the cavity of protrusion 4 is precisely bonded sample prescription with inserts 2.

It refers to shown in Fig. 3, Fig. 4 and Fig. 5, further, preferably, inserts 2 extends including top 21, from top 21 Bar portion 22 and the interconnecting piece 23 that extends from bar portion 22, top 21 and bar portion 22 are inserted into opening 41.It is formed at top 21 Multiple through-holes 5 are formed with the cylindrical portion 6 being inserted into multiple through-holes 5 respectively in the protrusion 4 of diaphragm 1.

Top 21, bar portion 22 and interconnecting piece 23 are integrally formed, and top 21 and bar portion 22 be inserted by opening 41 it is prominent It rises in portion 4, protrusion 4 is fixed by inserts 2 by way of cladding top 21 and bar portion 22 and forms rubber-wrapping structure.Inserts 2 Interconnecting piece 23 is connect with connecting rod 3, and connecting rod 3 is connected to the motor shaft of external motor by axis hole 31, drives connecting rod 3 by motor shaft It moves reciprocatingly, and then is moved back and forth with dynamic diaphragm 1.Diaphragm 1 and inserts 2 pass through multiple through-holes 5 and multiple cylindrical portions 6 The mode of grafting combines, so that diaphragm 1 and inserts 2 are not easily to fall off, the connection of diaphragm 1 and inserts 2 with this configuration ensure that film The function of piece component.6 quantity of cylindrical portion and position in through-hole 5 and diaphragm 1 in inserts 2 correspond.

Cylindrical portion 6 can be formed in diaphragm 1 by integrally formed mode, and inserts 2 is when being inserted into protrusion 4, through-hole 5 Corresponding with 6 position of cylindrical portion that inserts 2 can be inserted into protrusion 4, diaphragm 1 and inserts 2 are through combination.Or it can also work as It when diaphragm 1 and inserts 2 combine, is formed by casting, there are seams in the junction of diaphragm 1 and inserts 2 for needs when casting certainly Gap, the path in gap and 5 connection of through-hole are injected glue from gap, are bonded after glue solidification with diaphragm 1, inserts 2, simultaneously Diaphragm 1 and inserts 2 is fixed.

Pouring technology can simply include the following steps, but be not limited to following steps, can according to on-site actual situations It is altered, specific detailed process is not in the application protection scope, and this will not be repeated here:

Step 1: inserts 2 is inserted into diaphragm 1.

Step 2: glue being poured into from the gap of 2 junction of diaphragm 1 and inserts, groove 51 of the glue from 2 surface of inserts (referring to Fig. 5) is flowed into along through-hole 5, until glue fills up entire through-hole 5.

Step 3: by after casting diaphragm 1 and inserts 2 cool down, can be cooling by being directly placed in air, or It is placed into cooling equipment and is cooled down, or can be realized cooling mode by any other and cooled down.

Step 4: glue is cooling and forms cylindrical portion 6, and diaphragm 1 and inserts 2 are connected as one.

Referring to fig. 4 and shown in Fig. 5, further, preferably, through-hole 5 is formed completely through top 21 and in bar portion 22 Groove 51 corresponding with through-hole 5 is formed, protrusion 4 is in gradually to successively decrease outward from diaphragm 1 close on the direction at top 21 Structure.

I.e. protrusion 4 close to top 21 position size be greater than protrusion 4 close to bar portion 22 position size, It that is to say that protrusion 4 gradually successively decreases from the position close to top 21 to the size of the position close to bar portion 22, be convenient for protrusion in this way Portion 4 it is stable be coated on top 21, in bar portion 22, it is de- to be unlikely to protrusion 4 and top 21 in motion process, 22 position of bar portion From.

In addition, the outer diameter at top 21 is greater than the outer diameter of bar portion 22, interconnecting piece 23 in inserts 2, it is that size is maximum in three A part is stuck in the cavity 42 of protrusion 4 when being inserted into protrusion 4 convenient for inserts 2 by the top 21 of largest outside diameter, and Since the overall size of cavity 42 (i.e. protrusion 4) is in the trend gradually successively decreased, until size is minimum when opening 41, even if pulling at Diaphragm 1 and inserts 2 are pulled, inserts 2 is greater than the size of opening 41 due to the size at top 21,41 pairs of tops 21 of opening of inserts 2 Intercepting effects are detached from, inserts 2 will not be separated with diaphragm 1.

As shown in figure 4, further, preferably, the inner wall in protrusion 4 has the snap ring 7 outwardly protruded, in inserts The position that snap ring 7 is corresponded in 2 is formed with annular groove 8, and when inserts 2 is fixed in diaphragm 1, snap ring 7 and annular groove 8 are engaged by clamping.

By the cooperation of snap ring 7 and annular groove 8, protrusion 4 and inserts 2 are subjected to axial limiting and fixed, is i.e. protrusion 4 and embedding Part 2 can not move back and forth in the axial direction.On the basis of protrusion 4 and top 21, bar portion 22 cooperate, snap ring 7 and annular groove 8 Can be further fixed by protrusion 4 and inserts 2, so that the connection of protrusion 4 and inserts 2 is more stable, secured.

Continuing with shown in Figure 3, in addition, preferably, inserts 2 is engaged through the thread with connecting rod 3 and realizes removable Connection, the one end being connected in the interconnecting piece 23 of inserts 2 with connecting rod 3 are formed with tapped hollow cylindrical portion 24, even The one end being connected in bar 3 with the interconnecting piece 23 of inserts 2 is formed with male end 32, using internal screw thread and it is externally threaded in conjunction with and Connecting rod 3 is connect with the interconnecting piece 23 of inserts 2.

It is removable that inserts 2 and connecting rod 3 are connected through a screw thread mode, convenient for assembly.Certainly in other embodiments, inserts 2 and connecting rod 3 can also pass through other removable connection type assembly, such as clamping, snapping, expansion connect etc..

A kind of diaphragm pump is also provided simultaneously in present embodiment, which includes any one of above-mentioned diaphragm unit.

Referring to shown in Fig. 1, Fig. 2, at work, connecting rod 200 is done back and forth existing diaphragm unit by the drive of external motor Movement, the diaphragm 100 connecting with connecting rod 200, which follows, to move reciprocatingly, and the stress for moving generation will all focus on diaphragm 100 The stress intersection A of main body and protrusion 101 eventually leads to stress intersection A cracking.

Referring to fig. 4 and shown in Fig. 6, and the diaphragm unit of present embodiment is at work, and the connecting rod 3 of diaphragm unit is by outside The drive of motor moves reciprocatingly, and inserts 2, the diaphragm 1 connecting with connecting rod 3 are followed and moved reciprocatingly, and the stress for moving generation will The stress intersection B of 1 main body of diaphragm Yu protrusion 4 can partially be focused on.Meanwhile the rest part of stress can be transmitted to by diaphragm 1 Protrusion 4, and then continue to be transmitted to and be distributed in multiple cylindrical portions 6, it is resent to inserts 2 contacted with multiple cylindrical portions 6 In point, stress is subjected to multistage transmission, stress disperses step by step, significantly reduces the amount of stress of stress intersection B, to mention The service life of diaphragm unit entirety is risen.Further, stress disperses step by step, improves the diaphragm pump for being equipped with diaphragm unit Service life, while extending the maintenance period of diaphragm pump, significantly save labour cost and maintenance cost.

In addition, can be radiated by through-hole 5 when diaphragm unit works, the operating temperature of diaphragm unit is effectively reduced.Further , PPS (Polyphenylenesulphide, polyphenylene sulfide) plastics, PPS plastics can be used in the material of inserts 2 and diaphragm 1 With the physical properties such as high temperature resistant, corrosion-resistant, diaphragm 1, inserts 2 can be effectively prevent to be heated after diaphragm pump long-play, is old Change, cracking, significantly improves the service life of diaphragm unit, it, can when the 500h relative to existing diaphragm unit works When being promoted to 1200h work.Inserts 2 is identical with the material of diaphragm 1, and stress suffered by diaphragm 1 can be transmitted to inserts 2 well On, reduce remain in it is on diaphragm 1, especially in diaphragm 1 stress intersection B amount of stress, it is whole to greatly improve diaphragm unit The service life of body.

To those skilled in the art, in the range of the utility model technical idea can as needed and for Each step of above-mentioned control method is deleted or sequence adjusts.

It will be understood by those skilled in the art that in above-mentioned each embodiment, in order to keep reader more preferably geographical It solves the application and proposes many technical details.But even if without these technical details and based on the respective embodiments described above Various changes and modifications can also realize each claim of the application technical solution claimed substantially.Therefore, in reality In, can to above embodiment, various changes can be made in the form and details, without departing from the spirit of the utility model And range.

Claims (10)

1. a kind of diaphragm unit characterized by comprising

Diaphragm；

The inserts being fixed in the diaphragm；With

The connecting rod that can be dismounted relative to the inserts.

2. diaphragm unit according to claim 1, which is characterized in that be formed with protrusion in the central part of the diaphragm Portion is formed with the opening for inserts insertion in the upper surface of the protrusion.

3. diaphragm unit according to claim 2, which is characterized in that the inserts include top, from the top extend Bar portion and from the bar portion extend interconnecting piece, the top and the bar portion are inserted into the opening.

4. diaphragm unit according to claim 3, which is characterized in that multiple through-holes are formed at the top, described The cylindrical portion being inserted into multiple through-holes respectively is formed in the protrusion of diaphragm.

5. diaphragm unit according to claim 4, which is characterized in that the through-hole is formed completely through the top and in institute It states and forms groove corresponding with the through-hole in bar portion.

6. the diaphragm unit according to any one of claim 3-5, which is characterized in that the protrusion is in from the film The structure that the direction top external diameter at piece close to the top gradually successively decreases.

7. the diaphragm unit according to any one of claim 2-5, which is characterized in that have in the inner wall of the protrusion The snap ring outwardly protruded, the position that the snap ring is corresponded in the inserts are formed with annular groove, are fixed in the inserts described When in diaphragm, the snap ring and the annular groove are engaged by clamping.

8. the diaphragm unit according to any one of claim 3-5, which is characterized in that the inserts passes through with the connecting rod It is screwed and realizes removable connection.

9. diaphragm unit according to claim 8, which is characterized in that in the interconnecting piece of the inserts with the company One end that bar is connected is formed with tapped hollow cylindrical portion, in the connecting rod with the interconnecting piece phase of the inserts One end of connection is formed with external screw thread, utilizes the internal screw thread and described externally threaded in conjunction with and by the connecting rod and the inserts The interconnecting piece be connected.

10. a kind of diaphragm pump, which is characterized in that including diaphragm unit as claimed in any one of claims 1-9 wherein.