External safety valve integrated rotor pump capable of relieving pressure and protecting
By installing structures such as ring pipes, ring blocks, and thrust springs on the feed and discharge pipes of the rotor pump, flexible adjustment of the pressure relief threshold is achieved, solving the problem of pump body or pipeline damage caused by fixed pressure values in the prior art, and improving the flexibility and stability of pressure relief.
Patent Information
- Application Number
- CN202520278833.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-21
AI Technical Summary
In the existing technology, the safety valve is set to a fixed pressure value, which may cause damage to the pump body or pipeline under different operating conditions, and may prevent timely or premature pressure relief.
An integrated rotor pump with an external safety valve and pressure relief protection was designed. By setting a ring pipe, an annular block, a thrust spring, and a pressure relief pipe on the feed pipe and discharge pipe, and adjusting the position of the pressure relief pipe with a lever, the pressure relief threshold can be flexibly adjusted. Combined with a guide rod and a limit block, the movement stability is improved, and rapid pressure relief is achieved.
It enables flexible adjustment of the pressure relief threshold according to the working conditions, avoiding pressure relief under normal working pressure, preventing damage to the pump body or pipeline, and improving the flexibility and stability of pressure relief.
Smart Images
Figure CN223724838U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rotor pump technology, specifically, it relates to a rotor pump with an integrated external safety valve and pressure relief protection. Background Technology
[0002] A rotary pump is a positive displacement pump consisting of a rotating rotor and a stationary pump body. It changes the working volume through the relative movement between the rotor and the pump body, and uses the squeezing action of the rotating rotor to create a high vacuum and discharge pressure to discharge the liquid. At the same time, it leaves space on the other side to form a low pressure, allowing the liquid to be continuously drawn in.
[0003] Rotary pumps can be used to transport liquid materials. Generally, the pressures at the inlet and outlet pipes of a rotary pump are different. If the flow rate of liquid entering from the upstream pipe is greater than the pumping flow rate of the rotary pump, it is very easy to cause an increase in the pressure of the inlet pipe, which can lead to damage to the pump body or pipe rupture.
[0004] Currently, existing technologies typically employ an external safety valve installed at the feed pipe to release the gradually increasing pressure at the feed pipe, thereby protecting the pipeline and pump body. However, safety valves usually require a specific pressure setting to protect the pump and system. But under different operating conditions, this fixed pressure value may cause the system to depressurize even at normal operating pressure, or fail to release pressure promptly or slowly when excessive pressure occurs, leading to damage to the pump body or pipeline. Utility Model Content
[0005] To address the technical problem in existing technologies where safety valves are typically set to fixed pressure values, leading to pump or pipeline damage due to premature or delayed pressure release under different operating conditions, this invention provides a rotor pump with an integrated external safety valve and pressure relief protection.
[0006] The objective of this utility model can be achieved through the following technical solutions:
[0007] An integrated external safety valve with pressure relief protection rotor pump includes a pump body; an inlet pipe and a outlet pipe are fixedly connected to the middle of both sides of the pump body; a ring pipe is sleeved on both the inlet and outlet pipes, and the cross-section of the ring pipe is U-shaped; multiple pressure relief holes are opened on the inlet pipe, and the pressure relief holes are located at the end of the ring pipe near the rotor; a long groove corresponding to each pressure relief hole is opened on the outer surface of the ring pipe; an annular block is slidably arranged between the ring pipe and the inlet pipe or between the ring pipe and the outlet pipe; a thrust spring in a circular array is fixedly connected to the side of the annular block away from the pressure relief hole; a sliding groove is opened in the middle of the long groove; a movable plate is slidably arranged inside the sliding groove; a pressure relief pipe communicating with the inner side of the ring pipe is fixedly connected to the middle of the movable plate.
[0008] Further, the length of the sliding groove is twice the length of the long groove; the pressure relief pipe is slidably arranged in the long groove, and the outer diameter of the pressure relief pipe is equal to the width of the corresponding long groove.
[0009] Further, the guide rod is fixedly connected to the position corresponding to the inner side of the thrust spring, and the guide rod is slidably connected to the end of the ring pipe; the limiting block is fixedly connected to the position corresponding to the outer end of the ring pipe.
[0010] Further, the ring pipe is in interference fit with the feed pipe and the discharge pipe.
[0011] Further, the two shafts arranged in the pump body are rotatably arranged in the pump body, one end of one of the shafts penetrates to the outside of the pump body, and the other end of the other shaft is located in the pump body; the rotors are fixedly connected to the positions corresponding to the pump body.
[0012] Further, the long groove is located away from the pressure relief hole, and the long groove extends to the middle of the ring pipe; the sizes of the long grooves are different.
[0013] Further, the extension edges are fixedly connected to the two ends of the ring pipe, the inner diameter of the extension edge, the outer diameter of the discharge pipe and the outer diameter of the feed pipe are equal; the first rubber ring is arranged between the extension edge and the discharge pipe or between the extension edge and the feed pipe.
[0014] Further, the second rubber ring is fixedly connected to the side of the ring block close to the ring pipe, the feed pipe and the discharge pipe.
[0015] Further, the shifting block is fixedly connected to the position corresponding to the outer side of the ring block.
[0016] The beneficial effects of the utility model are as follows:
[0017] 1) When the pressure relief threshold value in the feed pipe or the discharge pipe needs to be adjusted, the operator can move the shifting plate in the sliding groove by the shifting block, so that the position of the pressure relief pipe is adjusted; if the pressure in the feed pipe or the discharge pipe is large, the pressure relief pipe can be moved away from the pressure relief hole, so that the pressure in the discharge pipe or the feed pipe can exert a large thrust on the ring block to make the thrust spring have a large deformation degree, so that the pressure relief pipe is communicated with the pressure relief hole to complete pressure relief, and the system will not be relieved under normal working pressure; if the pressure in the feed pipe or the discharge pipe is small, the pressure relief pipe can be moved close to the pressure relief hole, and the discharge pipe or the feed pipe only needs a small pressure to drive the thrust spring to have a small deformation, so that the pressure relief pipe is communicated with the pressure relief hole to complete pressure relief, and the pump body or the pipeline will not be damaged due to slow pressure relief or high pressure.
[0018] 2) The utility model discloses a guide rod and limit block's setting, can not only improve the moving stability of annular block, can also conveniently make the relief pipe far from the pressure relief hole for the manual pulling of operating personnel annular block to the pressure inside the discharge pipe or feed pipe is completed fast.
[0019] 3) The utility model discloses the size setting of each long groove and corresponding relief pipe is different specification, can further adjust the pressure relief speed of discharge pipe and feed pipe inside pressure, thereby convenient for the application of different working conditions. DRAWINGS
[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduce, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.
[0021] Figure 1 It is the overall structure schematic diagram of the utility model;
[0022] Figure 2 It is the sectional view of the utility model;
[0023] Figure 3 It is Figure 2 The local enlarged view of A in the middle;
[0024] Figure 4 It is the structure schematic diagram of the discharge pipe in the utility model;
[0025] In the drawing, the component list represented by each sign is as follows:
[0026] 1, pump body;2, shaft;21, rotor;3, feed pipe;4, discharge pipe;5, ring pipe;6, extension edge;7, first rubber ring;8, annular block;9, second rubber ring;10, thrust spring;11, pressure relief hole;12, long groove;13, sliding groove;14, moving plate;15, relief pipe;16, push block;17, guide rod;18, limit block. DETAILED DESCRIPTION
[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely in the following in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled person in the art without making creative labor belong to the scope of protection of the utility model.
[0028] Please refer to Figure 1 - Figure 2As shown, an external safety valve integrated pressure relief protection rotor pump, including pump body 1; two shafts 2 arranged inside the pump body 1 rotate, and one of the shafts 2 end penetrates to the outside of the pump body 1, the other shaft 2 both ends are located inside the pump body 1; the shaft 2 is fixed with the rotor 21 corresponding to the position inside the pump body 1; the middle part of the both sides of the pump body 1 is respectively fixed with the feed pipe 3 and the discharge pipe 4, the feed pipe 3 is used for conveying material to the inside of the pump body 1, and the discharge pipe 4 is used for conveying the material pumped by the rotor pump to the downstream pipeline.
[0029] Please refer again to Figure 2 、 Figure 3 and Figure 4 As shown, the feed pipe 3 and the discharge pipe 4 are sleeved with the ring pipe 5, the cross section of the ring pipe 5 is U-shaped structure, and the ring pipe 5 is interference fit between the feed pipe 3 and the discharge pipe 4; a plurality of pressure relief holes 11 are formed on the feed pipe 3, and the pressure relief holes 11 are located at the end of the ring pipe 5 close to the rotor 21; the outer surface of the ring pipe 5 is provided with a long slot 12 corresponding to the pressure relief hole 11, the long slot 12 is located at the end away from the pressure relief hole 11, and the long slot 12 extends to the middle of the ring pipe 5, the size of each long slot 12 is different; the both ends of the ring pipe 5 are fixed with the extension edge 6, the inner diameter of the extension edge 6, the outer diameter of the discharge pipe 4 and the outer diameter of the feed pipe 3 are equal, which is used to improve the air tightness between the ring pipe 5 and the feed pipe 3 or the ring pipe 5 and the discharge pipe 4; the first rubber ring 7 is arranged between the extension edge 6 and the discharge pipe 4 or the extension edge 6 and the feed pipe 3, which is used to further increase the air tightness between the ring pipe 5 and the feed pipe 3 or the ring pipe 5 and the discharge pipe 4.
[0030] Please refer again to Figure 2 and Figure 4 As shown, the ring pipe 5 and the feed pipe 3 or the ring pipe 5 and the discharge pipe 4 are slidably provided with the annular block 8, one side of the annular block 8 close to the ring pipe 5, the feed pipe 3 and the discharge pipe 4 is fixedly connected with the second rubber ring 9, the second rubber ring 9 is used to increase the air tightness of the both sides of the annular block 8; the annular block 8 is fixedly connected with the circumferential array of the thrust spring 10 away from the pressure relief hole 11, the thrust spring 10 is used to assist the annular block 8 to resist the pressure applied inside the feed pipe 3 or the discharge pipe 4.
[0031] Please refer again to Figure 4 As shown, the middle of the long slot 12 is provided with a sliding slot 13, the length of the sliding slot 13 is twice the length of the long slot 12; the sliding slot 13 is slidably provided with the moving plate 14; the moving plate 14 is fixedly connected with the shifting block 16 corresponding to the outside of the ring block; the middle of the moving plate 14 is fixedly connected with the pressure relief pipe 15 communicated with the inside of the ring pipe 5, the pressure relief pipe 15 is slidably arranged in the long slot 12, and the outer diameter of the pressure relief pipe 15 is equal to the width of the corresponding long slot 12.
[0032] Please refer again to Figure 4As shown, the annular block 8 is fixed with a guide rod 17 corresponding to the position inside the thrust spring 10, and the guide rod 17 is slidingly connected with the end of the ring tube 5; the guide rod 17 is fixed with a limiting block 18 corresponding to the position of the outer end of the ring tube 5.
[0033] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process is described in detail as follows:
[0034] If it is necessary to adjust the pressure relief threshold value inside the feeding pipe 3 or the discharging pipe 4, the operating personnel can move the moving plate 14 in the sliding groove 13 by means of the knob 16, so as to achieve the purpose of adjusting the position of the pressure relief pipe 15.
[0035] At this time, if the pressure inside the feeding pipe 3 or the discharging pipe 4 is relatively large, the pressure relief pipe 15 can be moved to the side away from the pressure relief hole 11, so as to ensure that the pressure inside the discharging pipe 4 or the feeding pipe 3 exerts a relatively large thrust on the annular block 8, so that the thrust spring 10 is deformed to a relatively large degree, so that the pressure relief pipe 15 is communicated with the pressure relief hole 11, the pressure relief is completed, and the system will not be relieved under the normal working pressure.
[0036] If the pressure inside the feeding pipe 3 or the discharging pipe 4 is relatively small, the pressure relief pipe 15 can be moved to the side close to the pressure relief hole 11, and for the same reason, only a small pressure inside the discharging pipe 4 or the feeding pipe 3 is required to push the thrust spring 10 to be deformed to a small degree, so that the pressure relief pipe 15 is communicated with the pressure relief hole 11, the pressure relief is completed, and the pump body 1 or the pipeline will not be damaged due to the fact that the pressure relief cannot be timely or slowly when the pressure is too high.
[0037] In addition, by setting different specifications for each long slot 12 and the corresponding pressure relief pipe 15, the pressure relief speed of the pressure inside the discharging pipe 4 and the feeding pipe 3 can be further adjusted, so that the application for different working conditions is facilitated.
[0038] Among them, through the setting of the guide rod 17 and the limiting block 18, not only the moving stability of the annular block 8 can be improved, but also the operating personnel can manually pull the annular block 8 to make the pressure relief pipe 15 away from the pressure relief hole 11, so that the pressure inside the discharging pipe 4 or the feeding pipe 3 is quickly completed.
[0039] In the description of the specification, the description of the reference terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0040] The above is only an example and description of the structure of the utility model, and various modifications or supplements or similar replacements of the described specific embodiments can be made by the skilled in the art without deviating from the structure of the utility model or beyond the scope defined by the claims, which shall belong to the protection scope of the utility model.
Claims
1. An externally safety valve integrated pressure relief protected rotor (21) pump characterized by: Including pump body (1);The both sides of the pump body (1) are respectively fixed with feed pipe (3) and discharge pipe (4);Feed pipe (3) and discharge pipe (4) are all sleeved with ring pipe (5), and the cross section of ring pipe (5) presents U-shaped structure; A plurality of pressure relief holes (11) are formed in the feed pipe (3), and the pressure relief holes (11) are located at the end of the ring pipe (5) close to the rotor (21);The outer surface of the ring pipe (5) is provided with a long slot (12) corresponding to the pressure relief hole (11); The ring pipe (5) and the feed pipe (3) or the ring pipe (5) and the discharge pipe (4) are slidably provided with an annular block (8);The annular block (8) is fixedly connected with a circumferential array of thrust springs (10) on the side away from the pressure relief hole (11); The middle part of the long slot (12) is provided with a sliding slot (13), and the sliding slot (13) is slidably provided with a moving plate (14);The middle part of the moving plate (14) is fixedly connected with a pressure relief pipe (15) communicated with the inner side of the ring pipe (5).
2. An externally safety valve integrated pressure relief protected rotor (21) pump according to claim 1, characterized in that: The length of the sliding slot (13) is twice the length of the long slot (12);The pressure relief pipe (15) is slidably arranged in the long slot (12), and the outer diameter of the pressure relief pipe (15) is equal to the width of the corresponding long slot (12).
3. An externally safety valve integrated pressure relief protected rotor (21) pump according to claim 1, characterized in that: The annular block (8) is fixedly connected with a guide rod (17) corresponding to the inner side of the thrust spring (10), and the guide rod (17) is slidably connected with the end of the ring pipe (5);The guide rod (17) is fixedly connected with a limiting block (18) corresponding to the outer end of the ring pipe (5).
4. An externally safety valve integrated pressure relief protected rotor (21) pump according to claim 1, characterized in that: The ring pipe (5) and the feed pipe (3) or the ring pipe (5) and the discharge pipe (4) are in interference fit.
5. An externally safety valve integrated pressure relief protected rotor (21) pump according to claim 1, characterized in that: Two axles (2) arranged above and below are rotatably arranged in the pump body (1), and one end of one of the axles (2) penetrates to the outside of the pump body (1), and the other axle (2) is located in the pump body (1);The position corresponding to the pump body (1) is fixedly connected with a rotor (21).
6. An externally safety valve integrated pressure relief protected rotor (21) pump according to claim 1, characterized in that: The long slot (12) is located away from the pressure relief hole (11), and the long slot (12) extends to the middle part of the ring pipe (5), and the size of each long slot (12) is different.
7. An externally safety valve integrated pressure relief protected rotor (21) pump according to claim 1, characterized in that: The both ends of the ring pipe (5) are fixedly connected with an extension edge (6), and the inner diameter of the extension edge (6), the outer diameter of the discharge pipe (4) and the outer diameter of the feed pipe (3) are equal; The first rubber ring (7) is arranged between the extension edge (6) and the discharge pipe (4) or the extension edge (6) and the feed pipe (3).
8. An externally safety valve integrated pressure relief protected rotor (21) pump according to claim 1, characterized in that: The side of the annular block (8) close to the ring pipe (5), the feed pipe (3) and the discharge pipe (4) is fixedly connected with the second rubber ring (9).
9. An externally safety valve integrated pressure relief protected rotor (21) pump according to claim 1 characterized by: The moving plate (14) is fixedly connected with a shifting block (16) corresponding to the outer side of the ring block.