CN211624317U - Overpressure protection device for pipeline pump - Google Patents
Overpressure protection device for pipeline pump Download PDFInfo
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- CN211624317U CN211624317U CN201922244491.5U CN201922244491U CN211624317U CN 211624317 U CN211624317 U CN 211624317U CN 201922244491 U CN201922244491 U CN 201922244491U CN 211624317 U CN211624317 U CN 211624317U
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- pressure regulating
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- protection device
- guide shaft
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Abstract
A pipeline pump overpressure protection device comprises a pump body and a pump cover, wherein an impeller is rotationally arranged in the pump body, and the pump cover is connected to the upper part of the pump body through a flange; the bottom of the pump cover is connected with an overpressure protection device, the overpressure protection device comprises a valve body, a valve core, a pressure regulating spring, a pressure regulating screw and a pressure regulating valve cover, and an upper through hole and a lower through hole which are communicated are formed in the valve body; the pressure regulating screw is in threaded connection with the upper through hole; the valve core comprises a lower guide shaft, a convex shoulder and an upper guide shaft which are integrally connected, and the lower guide shaft is arranged in the lower through hole in a penetrating manner; the upper guide shaft is arranged in the upper through hole in a penetrating way; the pressure regulating spring is arranged between the convex shoulder of the valve core and the pressure regulating screw; a pressure relief opening is formed in the side wall of the bottom of the upper through hole; the pressure regulating valve cover is connected to the upper end of the valve body. Compared with the prior art, the utility model discloses a tubing pump superpressure protection device ensures tubing pump normal use, avoids the tubing pump to cause the damage because of the superpressure, has improved the reliability that the product used.
Description
Technical Field
The utility model relates to a pump technical field specifically indicates a pipeline pump superpressure protection device.
Background
The pipeline pump is a machine for conveying liquid or pressurizing liquid by utilizing the rotation of an internal impeller, a water pump differential pressure protection device is not installed in the general pipeline pump, and the phenomenon that a pump body is cracked due to overpressure use or instant overpressure of a user is more during use.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to above-mentioned prior art not enough, and provide a pipeline pump superpressure protection device.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a pipeline pump overpressure protection device comprises a pump body and a pump cover, wherein an impeller is rotationally arranged in the pump body, and the pump cover is connected to the upper part of the pump body through a flange; the bottom of the pump cover is connected with an overpressure protection device, the overpressure protection device comprises a valve body, a valve core, a pressure regulating spring, a pressure regulating screw and a pressure regulating valve cover, an upper through hole and a lower through hole which are communicated are formed in the valve body, and the aperture of the upper through hole is larger than that of the lower through hole; the inner wall of the upper through hole is provided with an internal thread; the outer side of the pressure regulating screw is in threaded connection with the inner wall of the upper through hole; the valve core comprises a lower guide shaft, a convex shoulder and an upper guide shaft which are integrally connected, and the lower guide shaft is arranged in the lower through hole in a penetrating manner; the upper guide shaft penetrates through the upper through hole, and the end part of the upper guide shaft is arranged in the pressure regulating screw in a sliding manner; the pressure regulating spring is arranged between the convex shoulder of the valve core and the pressure regulating screw and is sleeved on the upper guide shaft; a pressure relief opening is formed in the side wall of the bottom of the upper through hole, and the pressure relief opening is located below the pressure regulating screw; the pressure regulating valve cover is connected to the upper end of the valve body.
Furthermore, the valve core is borne on the bottom end face of the through hole in the valve body through a convex shoulder, and a conical surface is arranged on the excircle at the bottom of the convex shoulder; and sealing gaskets are wrapped at the bottom of the conical surface and the bottom of the convex shoulder.
Furthermore, an external thread I is processed on the outer side of the lower through hole of the valve body, and the valve body is in threaded connection with the bottom of the pump cover through the external thread I.
Further, an external thread II is machined on the outer side of the bottom of the pressure regulating valve cover, and the pressure regulating valve cover is in threaded connection with an internal thread on the inner wall of the upper through hole through the external thread II; an operation notch is formed in the outer side of the pressure regulating valve cover.
Compared with the prior art, the utility model discloses a tubing pump superpressure protection device, when taking place the superpressure phenomenon in the pump body, the case is compressed, utilizes the pressure release mouth with liquid discharge, and the device ensures tubing pump normal use, avoids the tubing pump to cause the damage because of the superpressure to take unnecessary economic loss for the user, has improved the reliability of product use.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged view of FIG. 1A;
the device comprises a pump body 1, a pump body 2, a pump cover 3, an impeller 4, an overpressure protection device 41, a valve body 42, a valve core 43, a pressure regulating spring 44, a pressure regulating screw 45, a pressure regulating valve cover 46, a pressure relief opening 47, a sealing gasket 421, a lower guide shaft 422, a shoulder 423, an upper guide shaft 451 and an operation notch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below.
As shown in fig. 1 and 2, the overpressure protection device for the pipeline pump comprises a pump body 1 and a pump cover 2, wherein an impeller 3 is rotatably arranged in the pump body 1, and the pump cover 2 is connected above the pump body 1 through a flange; the bottom of the pump cover 2 is connected with an overpressure protection device 4, the overpressure protection device 4 comprises a valve body 41, a valve core 42, a pressure regulating spring 43, a pressure regulating screw 44 and a pressure regulating valve cover 45, an upper through hole and a lower through hole which are communicated are formed in the valve body 41, and the aperture of the upper through hole is larger than that of the lower through hole; the inner wall of the upper through hole is provided with an internal thread; the outer side of the pressure regulating screw 44 is in threaded connection with the inner wall of the upper through hole; and the outer side of the lower through hole of the valve body 41 is provided with a first external thread, and the valve body 41 is in threaded connection with the bottom of the pump cover 2 through the first external thread.
The valve core 42 comprises a lower guide shaft 421, a shoulder 422 and an upper guide shaft 423 which are integrally connected, and the valve core 42 is borne on the bottom end face of the through hole on the valve body 41 through the shoulder 422; the lower guide shaft 421 is arranged in the lower through hole in a penetrating way; the upper guide shaft 423 is arranged in the upper through hole in a penetrating way, and the end part of the upper guide shaft 423 is arranged in the pressure regulating screw 44 in a sliding way; the pressure regulating spring 43 is arranged between the shoulder 422 of the valve core 42 and the pressure regulating screw 44, and the pressure regulating spring 43 is sleeved on the upper guide shaft 423; a pressure relief opening 46 is formed in the side wall of the bottom of the upper through hole, and the pressure relief opening 46 is positioned below the pressure regulating screw 44; the pressure regulating valve cover 45 is connected to the upper end of the valve body 41, in the embodiment, an external thread II is processed on the outer side of the bottom of the pressure regulating valve cover 45, and the pressure regulating valve cover 45 is in threaded connection with an internal thread on the inner wall of the upper through hole through the external thread II; an operation notch 451 is formed in the outer side of the pressure regulating valve cover 45, and the operation notch 451 is used for an external tool to unscrew the pressure regulating valve cover 45.
A conical surface is arranged on the outer circle at the bottom of the convex shoulder 422; the conical surface and the bottom of the shoulder 422 are wrapped with a sealing gasket 47, and by arranging the sealing gasket 471, liquid is prevented from entering the valve body 41 in the normal use process of the pipeline pump.
According to the working principle, according to the maximum pressure that the pipeline pump can bear, the pressure regulating screw 44 is screwed to enable the pressure regulating spring 43 to compress the valve core 42, when the pressure of the pipeline pump exceeds a set pressure value, the valve core 42 is jacked up, liquid is discharged through the pressure relief port 46, automatic pressure relief is achieved, the pump body 1 is effectively protected, and the pump body 1 is prevented from being cracked and damaged due to overpressure.
The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications or changes without departing from the spirit of the present invention.
Claims (4)
1. The utility model provides a pipeline pump superpressure protection device, includes the pump body and pump cover, and pump body internal rotation is provided with the impeller, the pump cover passes through flange joint in pump body top, its characterized in that: the bottom of the pump cover is connected with an overpressure protection device, the overpressure protection device comprises a valve body, a valve core, a pressure regulating spring, a pressure regulating screw and a pressure regulating valve cover, an upper through hole and a lower through hole which are communicated are formed in the valve body, and the aperture of the upper through hole is larger than that of the lower through hole; the inner wall of the upper through hole is provided with an internal thread; the outer side of the pressure regulating screw is in threaded connection with the inner wall of the upper through hole; the valve core comprises a lower guide shaft, a convex shoulder and an upper guide shaft which are integrally connected, and the lower guide shaft is arranged in the lower through hole in a penetrating manner; the upper guide shaft penetrates through the upper through hole, and the end part of the upper guide shaft is arranged in the pressure regulating screw in a sliding manner; the pressure regulating spring is arranged between the convex shoulder of the valve core and the pressure regulating screw and is sleeved on the upper guide shaft; a pressure relief opening is formed in the side wall of the bottom of the upper through hole, and the pressure relief opening is located below the pressure regulating screw; the pressure regulating valve cover is connected to the upper end of the valve body.
2. A pipeline pump over-pressure protection device as claimed in claim 1, wherein: the valve core is borne on the bottom end face of the through hole in the valve body through a convex shoulder, and a conical surface is arranged on the excircle at the bottom of the convex shoulder; and sealing gaskets are wrapped at the bottom of the conical surface and the bottom of the convex shoulder.
3. A pipeline pump over-pressure protection device as claimed in claim 1, wherein: and the outer side of the lower through hole of the valve body is provided with a first external thread, and the valve body is in threaded connection with the bottom of the pump cover through the first external thread.
4. A pipeline pump over-pressure protection device as claimed in claim 1, wherein: the outer side of the bottom of the pressure regulating valve cover is provided with a second external thread, and the pressure regulating valve cover is in threaded connection with the internal thread on the inner wall of the upper through hole through the second external thread; an operation notch is formed in the outer side of the pressure regulating valve cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244491.5U CN211624317U (en) | 2019-12-13 | 2019-12-13 | Overpressure protection device for pipeline pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244491.5U CN211624317U (en) | 2019-12-13 | 2019-12-13 | Overpressure protection device for pipeline pump |
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| Publication Number | Publication Date |
|---|---|
| CN211624317U true CN211624317U (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922244491.5U Active CN211624317U (en) | 2019-12-13 | 2019-12-13 | Overpressure protection device for pipeline pump |
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| Country | Link |
|---|---|
| CN (1) | CN211624317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848433A (en) * | 2019-12-13 | 2020-02-28 | 上海东方泵业集团南通有限公司 | Overpressure protection device for pipeline pump |
-
2019
- 2019-12-13 CN CN201922244491.5U patent/CN211624317U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848433A (en) * | 2019-12-13 | 2020-02-28 | 上海东方泵业集团南通有限公司 | Overpressure protection device for pipeline pump |
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