CN214118449U - Diaphragm breakage alarm device - Google Patents
Diaphragm breakage alarm device Download PDFInfo
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- CN214118449U CN214118449U CN202120085182.2U CN202120085182U CN214118449U CN 214118449 U CN214118449 U CN 214118449U CN 202120085182 U CN202120085182 U CN 202120085182U CN 214118449 U CN214118449 U CN 214118449U
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Abstract
The utility model relates to the technical field of metering pumps, in particular to a diaphragm rupture alarm device; the metering pump comprises a metering pump main body, wherein an alarm device is connected to the metering pump main body, the alarm device comprises a front main body and a rear main body, a cavity penetrating through the front main body is formed in the front main body, a medicine inlet is formed in the front end of the cavity, a diaphragm is arranged in the cavity, a contact switch is installed at the rear end of the diaphragm, the rear part of the contact switch is installed in the rear main body, the front main body and the rear main body are connected through threads, the diaphragm and the contact switch are fixed between the front main body and the rear main body, the contact switch is connected with a signal wire, the signal wire penetrates through the rear main body and is connected to a control system, and a medicine inlet is formed in the joint of the metering pump main body and the front main body; this diaphragm alarm device that breaks is at the diaphragm back of breaking, and control system control switch closes, starts control protect function, or the very first time sends out the police dispatch newspaper, and the operator takes protective measures in the very first time, avoids causing the medicament to reveal or hinder the people to play fine guard action.
Description
Technical Field
The utility model belongs to the technical field of the measuring pump technique and specifically relates to a diaphragm alarm device that breaks.
Background
The diaphragm type metering pump replaces a piston with a specially designed and processed flexible diaphragm, and reciprocating motion is realized under the action of a driving mechanism to complete the suction-discharge process. Due to the isolation effect of the diaphragm, the isolation between the metered fluid and the driving lubrication mechanism is really realized structurally. The high-tech structural design and the selection of novel materials greatly improve the service life of the diaphragm, and the diaphragm type metering pump becomes a main pump type in fluid metering application at present due to the excellent corrosion resistance of composite materials.
The diaphragm is a key part in the diaphragm metering pump, and is one of parts which are easy to damage, slurry can enter the driving liquid side of the diaphragm chamber after the diaphragm is damaged, so that hydraulic oil is polluted, a piston cylinder, a valve and other parts can be damaged, and the diaphragm is inconvenient to clean and replace. The reasons why the diaphragm of the diaphragm metering pump is easily damaged are excessive use, improper operation and quality of the diaphragm.
Patent 201410116276.6 discloses a two diaphragm alarm device that breaks of measuring pump, its alarm mode be the diaphragm after breaking, and after liquid filled the cavity, can get into in the aperture above the sampling pipe, go the check valve that promotes pressure filtering valve the inside again, and the check valve goes again to promote the spring and reports to the police, has two weak points: the air can be generated in the sampling pipe, the spring has the lowest pressure which is certainly greater than 0.5ba, the sensitivity is certainly insufficient, the alarm protection can not be carried out at the first time after the diaphragm is broken, the plastic can not be finished because the sampling pipe is annular, the metal can not resist all chemical media and can not reach the anti-corrosion requirement, and the spring in the sampling pipe and the adjustable pressure filter valve can not be anti-corrosion, so the adjustable pressure filter valve is not suitable for the chemical media added by the metering pump.
Disclosure of Invention
The utility model aims at: the diaphragm rupture alarm device overcomes the defects in the prior art, and is simple in structure, high in sensitivity and corrosion resistance.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
a diaphragm breakage alarm device comprises a metering pump main body, wherein a cavity is arranged in the middle of the metering pump main body, an alarm device is connected onto the metering pump main body, the alarm device comprises a front main body and a rear main body, a cavity penetrating through the front main body is formed in the front main body, a medicine inlet is formed in the front end of the cavity, a diaphragm is arranged in the cavity, a contact switch is installed at the rear end of the diaphragm, the rear portion of the contact switch is installed in the cavity of the rear main body, the front main body and the rear main body are connected through threads, the diaphragm and the contact switch are fixed between the front main body and the rear main body, the contact switch is connected with a signal wire, the signal wire penetrates through the rear main body and is connected to a control system, and the control system is connected with a switch or an audible and visual alarm;
and a medicine inlet is formed at the joint of the metering pump main body and the front main body.
Furthermore, the metering pump main body is connected with the front main body through threads, and an O-shaped ring is further arranged between the front main body and the metering pump main body.
Further, preceding main part includes preceding main part linkage segment and preceding main part body section, pass through threaded connection between preceding main part linkage segment and the measuring pump main part, back main part includes back main part linkage segment and back main part body section, pass through threaded connection between back main part linkage segment and the preceding main part body section.
Furthermore, the end face of the front main body section close to the front main body connecting section is a slope.
Furthermore, there is a round annular boss one at the top of back main part linkage segment, there is a round annular boss two in the preceding main part body section, the diaphragm includes diaphragm body and the round annular diaphragm limit that is located diaphragm body periphery, the external diameter on boss one equals with the internal diameter size on diaphragm limit, the internal diameter on boss two equals with the internal diameter size on diaphragm limit, the width on boss two equals with the width size on diaphragm limit, the external diameter on diaphragm body equals with the internal diameter size on boss two, and after the installation, the diaphragm is fixed between boss one and boss two.
Furthermore, the end part of the rear main body, which is far away from the front main body, is connected with a waterproof connector, a signal wire cavity penetrating through the waterproof connector is formed in the waterproof connector, and the signal wire penetrates through the signal wire cavity and is connected with a control system.
Further, water joint includes threaded connection section and joint body section, the cavity in the back main part runs through back main part setting, and water joint passes through threaded connection section and back main part threaded connection.
Further, the cross section of the joint body section is in a regular hexagon shape.
Further, the contact switch and the rear main body are locked through threads.
Furthermore, after the metering pump main body is connected with the front main body, the medicine inlet and the medicine inlet are arranged in a concentric circle.
Furthermore, the diaphragm rupture alarm device is made of chemical-resistant plastic.
Adopt the technical scheme of the utility model's beneficial effect is:
the utility model discloses diaphragm alarm device that breaks can be after the diaphragm breaks, and the very first time sends out the police dispatch newspaper, and the operator can take safeguard procedures in the very first time, can not cause the medicament to reveal or hinder the people to play fine guard action.
The utility model provides a diaphragm alarm device that breaks, simple structure, first diaphragm in the measuring pump main part breaks, and after whole cavity was filled up to liquid, can be by through advance the medicine mouth, go into in the medicine mouth gets into alarm device, under the liquid pressure effect, the diaphragm contacted with contact switch, and contact switch gives the controller with signal transmission, and the controller starts audible-visual annunciator, and sensitivity is high, and pressure is less than 0.1ba and also can start the warning.
Drawings
Fig. 1 is an exploded view of the diaphragm rupture alarm device of the present invention.
Fig. 2 is a schematic view of the installation structure of the diaphragm according to the present invention.
In the figure: the main part of measuring pump 1, 2 cavitys, 3 medicine inlets, 4 preceding main parts, 5 diaphragms, 6 contact switches, 7 back main parts, 8 water joint, 9 signal lines, 10 back main part body sections, 11 back main part linkage segments, 12 preceding main part body sections, 13 preceding main part linkage segments, 14 domatic, 15 boss one, 16 boss two, 17 diaphragm limits, 18 diaphragm bodies.
Detailed Description
The invention will be further described with reference to the following detailed description and the accompanying drawings.
Referring to fig. 1, a diaphragm rupture alarm device comprises a metering pump main body 1, a cavity 2 is arranged in the middle of the metering pump main body 1, the metering pump main body 1 is connected with the alarm device, the alarm device comprises a front main body 4 and a rear main body 7, a cavity penetrating through the front main body 4 is arranged in the front main body 4, a medicine inlet is formed in the front end of the cavity, a diaphragm 5 is arranged in the cavity, a contact switch 6 is arranged at the rear end of the diaphragm 5, the rear part of the contact switch 6 is arranged in the cavity of the rear main body 7, the front main body 4 and the rear main body 7 are connected through threads, the diaphragm 5 and the contact switch 6 are fixed between the front main body 4 and the rear main body 7, the contact switch 6 is connected with a signal wire 9, the signal wire 9 penetrates through the rear main body 7 to be connected with a control system, and the control system is connected with a switch or an acousto-optic alarm; the junction of measuring pump main part 1 and preceding main part 4 is equipped with into medicine mouth 3, and after measuring pump main part 1 and preceding main part 4 were connected, it was the concentric circles setting with the medicine mouth to advance medicine mouth 3.
The working principle is as follows: after the measuring pump diaphragm 5 breaks, fluid can get into in the cavity 2 of measuring pump main part 1, fluid can get into medicine mouth 3 after crowded full in the cavity 2, get into the medicine mouth in the middle of main part 4 from advancing medicine mouth 3 again, get into the diaphragm 5 department inside preceding main part 4 at last, when pressure reached the settlement pressure, fluid can promote diaphragm 5 and go to touch contact switch 6, contact switch 6 passes through signal line 9 and gives the controller with pressure signal transmission, the controller starts audible-visual annunciator and reports to the police, thereby remind operator measuring pump diaphragm 5 to break, take protective measures the very first time. Or the controller controls the main switch to be closed, and the metering pump stops working, thereby playing an effective protection role.
In order to further improve the connection sealing performance between the alarm device and the metering pump main body 1, in the embodiment, the metering pump main body 1 is connected with the front main body 4 through threads, and an O-ring is further arranged between the front main body 4 and the metering pump main body 1.
The preceding main part 4 in this embodiment includes preceding main part linkage segment 13 and preceding main part body section 12, passes through threaded connection between preceding main part linkage segment 13 and the measuring pump main part 1, and back main part 7 includes back main part linkage segment 11 and back main part body section 10, passes through threaded connection between back main part linkage segment 11 and the preceding main part body section 12, and the external diameter of back main part linkage segment 11 and the internal diameter size phase-match of the inside cavity 2 of preceding main part body section 12 are equipped with the screw thread on the inner wall of preceding main part cavity 2.
The terminal surface that preceding main part 12 is close to preceding main part linkage segment 13 in this embodiment is domatic 14, adopts this structural design, can further improve the closeness of being connected between preceding main part 4 and the measuring pump main part 1, because the side of measuring pump main part 1 is arc, so adopt domatic 14 structure, compare in the plane, the contact surface between preceding main part 4 and the measuring pump main part 1 is little, has avoided causing the damage to the terminal surface of measuring pump main part 1 in the installation.
Referring to fig. 2, in the present embodiment, a ring of first annular boss 15 is disposed on the top of the rear main body connecting section 11, a ring of second annular boss 16 is disposed in the front main body section 12, the first annular boss 15 is located above the inner thread section of the front main body section 12 (i.e. on the side close to the front main body connecting section 13), a gap is formed between the first boss 15 and the inner thread section of the front main body 4, the diaphragm 5 includes a diaphragm body 18 and a ring of annular diaphragm edge 17 located on the periphery of the diaphragm body 18, the diaphragm body 18 is spherical, the inner diameter of the first boss 15 is equal to the inner diameter of the diaphragm edge 17, the inner diameter of the second boss 16 is equal to the outer diameter of the diaphragm body 18, after installation, the diaphragm 5 is fixed between the first boss 15 and the second boss 16, the inner thread section of the front main body section 12 is disposed from the lower end of the front main body section 12 and is equal to the length of the outer thread section on the rear main body connecting section 11, after installation, the distance between the first boss 15 and the second boss 16 is matched with the thickness of the diaphragm edge 17 (because the diaphragm 5 is elastic, in actual design, the diaphragm 5 can be stably fixed between the first boss 15 and the second boss 16 without displacement after installation). When the first diaphragm on the metering pump main body 1 is not broken, the diaphragm body 18 protrudes towards the side of the metering pump main body 1 and is not in contact with the contact switch 6, and after the first diaphragm on the metering pump main body 1 is broken, because the diaphragm 5 is made of a soft film material, when the fluid flows into the front main body 4 and is in contact with the diaphragm 5, the diaphragm 5 protrudes towards the side of the rear main body 7 and is in contact with the contact switch 6, so that the alarm device is started. Moreover, the structural design can ensure the installation sealing performance between the front main body 4 and the rear main body 7, thereby improving the sensitivity of the alarm device.
End connection that main part 4 was kept away from to back main part 7 in this embodiment has water joint 8, there is a signal line cavity that runs through water joint 8 in the water joint 8, signal line 9 passes the signal line cavity and is connected with control system, waterproof construction's design, can avoid steam to enter into inside the alarm device, it is specific to influence alarm device's sensitivity, water joint 8 includes threaded connection section and connects this body section, cavity in the back main part 7 runs through back main part 7 and sets up, water joint 8 passes through threaded connection section and back main part 7 threaded connection, connect the transversal regular hexagon of personally submitting of this body section, adopt this structural design, water joint 8's installation dismantlement is more convenient.
In order to further improve the sensitivity of the alarm device, the contact switch 6 and the rear body 7 are locked through threads, so that the fixed distance between the contact switch 6 and the diaphragm 5 can be ensured, and the connection tightness of the contact switch 6 and the diaphragm 5 section can be ensured.
The utility model provides a measuring pump and alarm device, the position that all liquid can contact all adopt corrosion-resistant material or coating corrosion-resistant coating, and the selection of specific corrosion-resistant material and corrosion-resistant coating is decided according to the physicochemical property of the medicament that needs to add, and this selection belongs to prior art, no longer gives unnecessary details in this application.
The material of (b) be corrosion-resistant material or at the surface coating one deck corrosion-resistant layer, the specific selection on corrosion-resistant material and corrosion-resistant layer is prior art, no longer gives details in this application.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary experimental examples, but that it can be implemented in other specific forms without departing from the spirit and essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment contains only one independent claim, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (10)
1. A diaphragm rupture alarm device characterized in that: the automatic dosing device comprises a dosing pump main body, wherein a cavity is arranged in the middle of the dosing pump main body, an alarm device is connected to the dosing pump main body, the alarm device comprises a front main body and a rear main body, a cavity penetrating through the front main body is formed in the front main body, a medicine inlet is formed in the front end of the cavity, a diaphragm is arranged in the cavity, a contact switch is installed at the rear end of the diaphragm, the rear portion of the contact switch is installed in the cavity of the rear main body, the front main body and the rear main body are connected through threads, the diaphragm and the contact switch are fixed between the front main body and the rear main body, the contact switch is connected with a signal wire, the signal wire penetrates through the rear main body and is connected to a control system, and;
and a medicine inlet is formed at the joint of the metering pump main body and the front main body.
2. A diaphragm rupture alarm device according to claim 1, wherein: the metering pump main body is connected with the front main body through threads, and an O-shaped ring is further arranged between the front main body and the metering pump main body.
3. A diaphragm rupture alarm device according to claim 2, wherein: preceding main part is including the preceding main part linkage segment that has the external screw thread and preceding main part body section, pass through threaded connection between preceding main part linkage segment and the measuring pump main part, back main part is including the back main part linkage segment that has the external screw thread and back main part body section, pass through threaded connection between back main part linkage segment and the preceding main part body section.
4. A diaphragm rupture alarm device according to claim 3, wherein: the end face of the front main body section close to the front main body connecting section is a slope.
5. A diaphragm rupture alarm device according to claim 3, wherein: the top of the rear main body connecting section is provided with a ring of annular boss I, the inside of the front main body section is provided with a ring of annular boss II, the ring of annular boss I is positioned above the thread section inside the front main body section,
the diaphragm comprises a diaphragm body and a circle of annular diaphragm edge located on the periphery of the diaphragm body, the diaphragm body is spherical, the inner diameter of the first boss is equal to that of the diaphragm edge, the inner diameter of the second boss is equal to that of the diaphragm body, and after the diaphragm is installed, the diaphragm is fixed between the first boss and the second boss.
6. A diaphragm rupture alarm device according to claim 1, wherein: the end part of the rear main body far away from the front main body is connected with a waterproof connector, a signal wire cavity penetrating through the waterproof connector is formed in the waterproof connector, and the signal wire penetrates through the signal wire cavity and is connected with a control system.
7. A diaphragm rupture alarm device according to claim 6, wherein: waterproof connection includes threaded connection section and connects this section of body, the cavity in the back main part runs through back main part setting, and waterproof connection passes through threaded connection section and back main part threaded connection.
8. A diaphragm rupture alarm device according to claim 6, wherein: the cross section of the joint body section is in a regular hexagon shape.
9. A diaphragm rupture alarm device according to claim 1, wherein: the contact switch and the rear main body are locked through threads.
10. A diaphragm rupture alarm device according to claim 1, wherein: the diaphragm rupture alarm device is made of chemical-resistant plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120085182.2U CN214118449U (en) | 2021-01-13 | 2021-01-13 | Diaphragm breakage alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120085182.2U CN214118449U (en) | 2021-01-13 | 2021-01-13 | Diaphragm breakage alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214118449U true CN214118449U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120085182.2U Active CN214118449U (en) | 2021-01-13 | 2021-01-13 | Diaphragm breakage alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214118449U (en) |
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2021
- 2021-01-13 CN CN202120085182.2U patent/CN214118449U/en active Active
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