JP3162419U - Electromagnetic vibration type air pump - Google Patents

Abstract

An electromagnetic vibration pump capable of attenuating vibration between upper and lower housings and reducing noise of the electromagnetic vibration pump. A lower housing provided below an electromagnetic driving unit on which an electromagnetic driving unit is placed, and a tank cover attached to the lower housing from a lower portion of the lower housing and defining a discharge tank chamber together with the lower housing And a synthetic resin upper housing coupled to the lower housing via a packing and covering the electromagnetic drive unit from above, and a housing cover covering the upper housing from above the upper housing, the lower housing comprising the electromagnetic drive unit A tank upper wall that contacts the tank cover, and one or more pillars that extend downward from the tank upper wall and contact the tank cover. [Selection] Figure 1

Description

  The present invention relates to an electromagnetic vibration type air pump. More specifically, a reciprocating motion is caused by a magnetic interaction between a vibrator with a permanent magnet connected to the diaphragm and two electromagnets provided between the vibrator, and the diaphragm is driven to suck and discharge the fluid. The present invention relates to an electromagnetic vibration type air pump. The air pump of the present invention is mainly used indoors and outdoors, and is used for fish farming, domestic septic tanks and the like.

  Conventional electromagnetic vibration type pumps take measures against noise by increasing the thickness of a member surrounding the electromagnetic driving unit or using a metal material in order to reduce noise and vibration generated from the electromagnetic driving unit. In addition, measures are taken to reduce vibration and noise by screwing the parts that vibrate.

  However, a known electromagnetic vibration type pump is assembled by fastening upper and lower housings surrounding a rod-shaped body functioning as a vibrator provided with an electromagnet or a permanent magnet with screws, and the upper and lower housings are directly connected with such screws. In the assembled air pump, vibration is directly transmitted from a contact portion between the lower housing and the upper housing, and noise is generated.

  In addition, the known electromagnetic vibration type pump vibrates from the electromagnetic drive unit to the discharge tank unit provided at the lower part of the electromagnetic drive unit due to the vibration of the electromagnetic drive unit provided with the electromagnet and the vibrator. (See Patent Document 1).

  In addition, if the longitudinal distance of the housing cover that covers the upper housing is long, the sandwiched packing cannot be completely pressed down and generates chatter noise due to vibration, and screwing work is necessary to suppress the chatter noise.

JP 2002-371968 A

  Therefore, in view of such circumstances, an object of the present invention is to provide an electromagnetic vibration pump that can attenuate the vibration between the upper and lower housings and reduce the noise of the electromagnetic vibration pump. Also, an electromagnetic vibration pump that can reduce the vibration transmitted to the tank upper wall of the lower housing provided in the lower part of the electromagnetic drive unit provided with the electromagnetic coil and vibrator, and can reduce the noise of the electromagnetic vibration pump The purpose is to provide.

  An electromagnetic vibration type diaphragm pump according to the present invention includes an electromagnetic drive unit including a pair of electromagnets arranged opposite to each other and a rod-like body including a permanent magnet, and the pair of electromagnets and the permanent magnets are magnetically coupled to each other. An electromagnetic vibration type diaphragm pump 1 that reciprocates a diaphragm connected to both ends or one end of the rod-like body by an action, wherein the electromagnetic vibration type diaphragm pump 1 is mounted with the electromagnetic driving unit D. A lower housing 2 provided below the electromagnetic drive unit D, a tank cover 3 attached to the lower housing 2 from a lower portion of the lower housing 2 and defining a discharge tank chamber TR together with the lower housing 2, and the lower housing 2 and a synthetic resin upper housing 4 that are connected to each other through a packing P and cover the electromagnetic drive unit D from above. A housing cover 5 that covers the upper housing 4, and the lower housing 2 extends downward from the tank upper wall 21 in contact with the electromagnetic drive part D, and extends downward from the tank upper wall 21. One or more pillars 22 that contact the cover 3 are provided.

  In addition, flange portions 23 and 41 for attaching screws are provided at fixed portions of the upper housing 4 and the lower housing 2, and a boss portion 42 protruding upward is provided on the flange portion 41 of the upper housing 4. It is preferable to be made.

  Further, the packing P is provided at a position where the upper housing 4 and the lower housing 2 are not in direct contact with each other, but is generated by the electromagnetic drive unit D and attenuates the vibration transmitted to the lower housing 2, and the packing P is The vibration transmitted from the housing 2 to the upper housing 4 and from the upper housing 4 to the housing cover 5 is preferably provided at a position where the housing cover 5 is brought into contact with the packing P to attenuate the vibration.

  The electromagnetic drive unit D includes a housing 6 that houses the pair of electromagnets and the rod-like body and has an upper opening, and the electromagnetic drive unit D has upper edges 61 and 62 facing the housing 6. Is further provided with detecting means 7 for detecting abnormality of the rod-like body, and the upper opening of the housing 6 is connected to the electromagnetic drive unit upper cover via the cover packing 8. 9, the cover packing 8 is thicker at the contact position between the cover packing 8 and the locking portions 71 and 72 of the detection means than at the non-contact position with the locking portion. It is preferable that the cover packing 8 is provided with a thick portion 82 on the mating surface between the housing 6 and the cover packing 8.

  According to the electromagnetic vibration type pump of the present invention, the vibration from the lower housing to the upper housing transmitted through the screws for fixing the upper and lower housings is the material of the boss by providing the boss at a position where the upper housing screw is attached. The vibration is attenuated by the characteristics of the resin. As a result, the vibration of the upper housing can be reduced, thereby reducing the noise of the electromagnetic vibration type pump.

  In addition, the vibration transmitted to the upper wall of the tank of the lower housing can change the vibration resonance point by providing a column in the lower housing, reducing the vibration of the lower housing, thereby reducing the noise of the electromagnetic vibration pump Can be made.

  Further, by providing a packing between the upper and lower housings so that the upper and lower housings do not touch directly, vibration of the lower housing is attenuated by the packing and is not transmitted to the upper housing. Further, by bringing the housing cover into contact with the upper housing via the packing, the vibration of the housing cover is reduced, and the noise of the electromagnetic vibration pump can be reduced.

  Further, by changing the thickness of the packing, the raised portion can be forcibly pressed down, the screwing work can be omitted, and the vibration (chattering noise) of the electromagnetic vibration type pump can be eliminated.

It is sectional drawing of the electromagnetic vibration type pump of this invention. It is sectional drawing of the electromagnetic vibration type pump of this invention. It is explanatory drawing for demonstrating the packing used for the electromagnetic vibration type pump of this invention. It is explanatory drawing for demonstrating the packing used for the electromagnetic vibration type pump of this invention. It is explanatory drawing for demonstrating the electromagnetic drive part of the electromagnetic vibration type pump of this invention.

  Hereinafter, an electromagnetic vibration pump according to the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, the electromagnetic vibration pump 1 of the present invention includes a pair of electromagnets (not shown) arranged opposite to each other, and a rod-like body (not shown) provided with permanent magnets. The electromagnetic drive part D which comprises the above-mentioned well-known electromagnetic vibration type pump consisting of is provided. The electromagnetic vibration type pump 1 reciprocates a diaphragm connected to both ends or one end of a rod-like body by a magnetic interaction between a pair of electromagnets and the permanent magnet provided in the electromagnetic driving unit D, thereby generating an electromagnetic vibration type. Air sucked from the outside of the pump 1 is discharged.

  As shown in FIGS. 1 and 2, the electromagnetic drive unit D includes a housing 6 that houses an electromagnet and a rod-like body, and the bottom of the housing 6 is connected to the tank upper wall 21 on the upper side of the lower housing 2. The cushion rubber 10 is in contact. A tank cover 3 is provided at a position facing the tank upper wall 21 of the lower housing 2, and is fixed to the lower housing 2 by fixing means S such as screws, and the discharge tank chamber TR is formed by the lower housing 2 and the tank cover 3. Is defined.

  As shown in FIGS. 1 and 2, a column 22 that extends downward from the tank upper wall 21 of the lower housing 2 in FIG. 1 and 2 and contacts the tank cover 3 is provided. One or more pillars 22 are provided, and the tank cover 3 presses the pillar 22 against the tank upper wall 21 side so that the vibration resonance point is changed, which is generated in the electromagnetic drive unit D and is generated on the tank upper wall 21. Since the transmitted vibration is reduced by the column 22 and transmitted to the tank cover 3, the vibration of the electromagnetic vibration type pump 1 is reduced and noise can be reduced.

  As shown in FIGS. 1 and 2, the column 22 can be a columnar column, but may be a polygonal shape or a cylindrical shape.

  Moreover, it is preferable that the pillar 22 is an area of about tank inner upper surface area × 0.2.

  The material of the pillar 22 is preferably a synthetic resin because it attenuates vibration.

  As shown in FIGS. 1 and 2, the electromagnetic vibration pump 1 is mounted on the lower housing 2 via a cushion rubber 10, and is provided with an upper housing 4 that covers the electromagnetic drive unit D together with the lower housing 2. Yes. The upper housing 4 is fixed to the lower housing 2 via a packing P as shown in FIGS. As shown in FIGS. 3A and 3B, the packing P is provided over the entire fixing portion between the lower housing 2 and the upper housing 4, so that the upper housing 4 and the lower housing 2 are separated. Since there is no direct contact, the vibration generated by the electromagnetic drive unit D and transmitted to the lower housing 2 is not transmitted directly to the upper housing 4, but is transmitted to the upper housing 4 side after being attenuated by the packing P. The vibration of the pump 1 can be reduced and the noise can be reduced.

  As the material of the packing P, synthetic rubber is preferably employed.

  Further, the upper housing 4 and the lower housing 2 are fixed at the flange portions 23 and 41 provided on the upper housing 4 and the lower housing 2 by screws S and nuts N which are known fixing means. The upper housing 4 is made of synthetic resin, and, for example, ABS resin is preferably used.

  A boss portion 42 that protrudes upward is provided from the flange portion 41 of the upper housing 4. In the boss portion 42 protruding upward, a hole through which a fixing means such as a screw S is inserted extends upward along the longitudinal direction of the screw S, and vibration transmitted through the screw is caused by a synthetic resin boss. Since the distance at which vibration is transmitted in the portion 42 becomes longer, the vibration is attenuated by the characteristics of the synthetic resin, and the vibration generated in the electromagnetic drive unit D and transmitted to the lower housing 2 is not easily transmitted to the upper housing 4 by the screw S. Thus, the vibration of the electromagnetic vibration pump 1 can be reduced, and the noise can be reduced.

  The electromagnetic vibration pump 1 further includes a housing cover 5 that covers the upper housing 4 from above the upper housing 4. A packing P is interposed between the housing cover 5 and the lower housing 2. Since the packing P covers the upper edge of the lower housing 2 as shown in FIGS. 3A and 3B, the housing cover 5 and the lower housing 2 are not in direct contact with each other, and the electromagnetic drive unit D The vibration generated and transmitted to the lower housing 2 is not transmitted directly to the housing cover 5 but is transmitted to the housing cover 5 side after the vibration is attenuated by the packing P, so that the vibration of the electromagnetic vibration type pump 1 can be reduced. , Noise can be reduced.

  Further, as shown in FIG. 2, a packing P <b> 2 is interposed at the contact portion between the housing cover 5 and the upper housing 4, and vibration transmitted from the upper housing 4 to the housing cover 5 can be further damped.

  As shown in FIG. 4, the electromagnetic drive unit D includes a housing 6 in which a pair of electromagnets and a rod-shaped body are accommodated and an upper portion is opened. As shown in FIG. 4, detection means 7 for detecting abnormal vibration of the vibrator in the electromagnetic drive unit D is provided. As shown in FIG. 4, the detection means 7 is locked to the upper edges 61 and 62 of the housing 6 facing each other by locking portions 71 and 72. As shown in FIG. 4, the upper opening of the housing 6 is covered with an electromagnetic driving part D upper cover 9 via a cover packing 8 from above, and is sealed by known fixing means such as screws.

  The cover packing 8 is disposed at a position where the locking portions 71 and 72 of the detection means 7 are locked, that is, at a contact position between the cover packing 8 and the locking portions 71 and 72 of the detection means 7. A thick portion 81 is formed on the surface that contacts the casing 6 and the thick portion 81 that is thicker than the non-contact position with 72.

  Since the thick portion 81 strongly presses the locking portions 71 and 72 by the thick portion 81 of the cover packing 8, the detection means 7 can be fixed without using screws for fixing the detection means 7. Therefore, the chatter noise caused by the vibration of the locking portions 71 and 72 due to the fact that the locking portions 71 and 72 sandwiched between the cover packing 8 and the upper edges 61 and 62 of the housing 6 cannot be completely suppressed is prevented. can do. Moreover, since the mating surface of the housing 6 and the cover packing 8 is also pressed by the thick portion 82, chatter noise caused by vibration transmitted from the housing 6 can be prevented.

1 Electromagnetic vibration type diaphragm pump (electromagnetic vibration type pump)
2 Lower housing 21 Tank upper wall 22 Pillar 23, 41 Flange part 3 Tank cover 4 Upper housing 42 Boss part 5 Housing cover 6 Case 7 Detection means 71, 72 Locking part 8 Cover packing 81, 82 Thick part D Electromagnetic drive Part P, P2 Packing TR Discharge tank chamber 9 Cover 10 Cushion rubber

Claims (4)

An electromagnetic drive unit comprising a pair of electromagnets arranged opposite to each other and a rod-like body provided with a permanent magnet, and both ends or one end of the rod-like body by a magnetic interaction between the pair of electromagnets and the permanent magnet An electromagnetic vibration type diaphragm pump (1) for reciprocating a diaphragm coupled to the electromagnetic vibration type diaphragm pump (1), wherein the electromagnetic driving unit (D) is placed on the electromagnetic driving unit ( D) A lower housing (2) provided below, and attached to the lower housing (2) from a lower portion of the lower housing (2), and defining a discharge tank chamber (TR) together with the lower housing (2) A tank cover (3), a synthetic resin upper housing (4) connected to the lower housing (2) via a packing (P) and covering the electromagnetic drive unit (D) from above; A tank cover (5) covering the upper housing (4) from above the housing (4), wherein the lower housing (2) is in contact with the electromagnetic drive unit (D) and a tank upper wall (21) The electromagnetic vibration type diaphragm pump is provided with one or more columns (22) extending downward from the tank upper wall (21) and contacting the tank cover (3). Flange portions (23, 41) for attaching screws are provided at the fixing portions of the upper housing (4) and the lower housing (2), and the flange portion (41) of the upper housing (4) is directed upward. The electromagnetic vibration type diaphragm pump according to claim 1, wherein a boss portion (42) projecting from the oscillating member is provided. The packing (P) is provided at a position where the upper housing (4) and the lower housing (2) are not in direct contact but are generated by the electromagnetic drive unit (D) to attenuate the vibration transmitted to the lower housing (2). In addition, the packing (P) is in a position where the lower housing (2) and the housing cover (5) are not in direct contact with each other and the vibration generated by the electromagnetic vibration part (D) is attenuated and transmitted to the lower housing (2). The electromagnetic vibration type diaphragm pump according to claim 1 or 2, wherein the diaphragm pump is provided. The electromagnetic drive unit (D) includes a housing (6) that houses the pair of electromagnets and the rod-like body, and an upper portion is opened. The electromagnetic drive unit (D) is opposed to the housing (6). The upper edge of the housing (6) is further provided with detection means (7) that is locked to the upper edges (61, 62) that are locked via the locking portions (71, 72) and that detects abnormality of the rod-shaped body. Part is sealed by an electromagnetic driving unit upper cover (9) through a cover packing (8), and the cover packing (8) is connected to the cover packing (8) and the locking part (71, 72) of the detection means. ) And a cover portion (81) that is thicker than a non-contact position with the locking portion, and the cover packing (8) is connected to the casing (6). The mating surface with the cover packing (8) is provided with a thick portion (82). Electromagnetic vibrational diaphragm pump according to any one of 1 to 3.

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