A safety pressure relief mechanism for an odor pump

Abstract

This utility model provides a safety pressure relief mechanism for an odorizing pump, belonging to the technical field of odorizing pumps. It includes: a replenishing pump head, with a front pressure relief hole and a rear pressure relief hole on both sides of the replenishing pump head. A medium inlet is located at the middle of the front and rear pressure relief holes. A valve disc is provided at the top of the medium inlet, and a valve stem is slidably connected inside the medium inlet. The valve stem is slidably installed inside the valve disc, and a spring cover is installed at the top of the valve disc. A cylindrical compression spring is sleeved on the outside of the valve stem, and the top of the cylindrical compression spring is in contact with the spring cover. This safety pressure relief mechanism for the odorizing pump, with its front pressure relief hole, medium inlet, and rear pressure relief hole, allows pressure relief under normal conditions only through the front pressure relief hole. When the pressure rises above the set pressure, the hydraulic oil pushes the valve stem upward, compressing the cylindrical compression spring. As the valve stem moves a certain distance, it exposes the rear pressure relief hole, allowing hydraulic oil to drain from the rear pressure relief hole into the pump box.

Description

Technical Field

[0001] This utility model belongs to the field of odor pump technology, specifically relating to a safety pressure relief mechanism for an odor pump. Background Technology

[0002] Chinese Patent Publication No. CN215805084U discloses a quick-change diaphragm structure. An upper oil supply valve sleeve and an oil supply valve sleeve are installed inside the oil supply hole at the bottom of the oil supply pump head. The outer contour and central hole of the oil supply valve sleeve are both larger at the top and smaller at the bottom. The upper outer wall of the oil supply valve sleeve is connected to the oil supply hole by threads. The lower part of the upper oil supply valve sleeve is located inside the upper central hole of the oil supply valve sleeve. An oil supply valve seat is installed between the lower end of the upper oil supply valve sleeve and the bottom surface of the upper central hole of the oil supply valve sleeve. A sealing ball is installed at the upper end of the central hole of the oil supply valve seat. A one-way valve is installed between the upper end of the upper oil supply valve sleeve and the upper end face of the oil supply hole. Valve gasket; the lower part of the oil replenishing valve sleeve is set inside the oil replenishing plug, and the upper outer wall of the oil replenishing plug is connected to the inner wall of the oil replenishing hole by threads; an exhaust plug is installed at the exhaust hole at the top of the oil replenishing pump head, and a sealing gasket is set between the lower end face of the exhaust plug and the bottom face of the exhaust hole; the lower end of the center hole of the oil replenishing valve sleeve is connected to the inner cavity of the pump housing through the inner cavity of the oil replenishing plug and the oil inlet hole on the oil replenishing pump head; a connecting hole is set in the middle of the exhaust hole, which is connected to one end of the return oil hole, and the other end of the return oil hole is connected to the inner cavity of the pump housing; an oil guide groove extending inward is set in the center of the middle of the exhaust hole, and the oil guide groove is connected to the inner cavity of the oil replenishing pump head through a transverse oil guide channel;

[0003] Under normal operating conditions, the pressure in the natural gas pipeline will increase, which will cause the pressure of the replenishing pump head of the odorizing pump to increase accordingly. The pressure may rise suddenly due to the accumulation of medium or pipeline blockage. During the odorizing process, the odorant output pipeline may become blocked, or the one-way valve of the odorizing nozzle may malfunction, causing the output pressure of the odorizing pipeline to rise and exceed the design pressure, which will cause irreversible mechanical damage to the diaphragm in the entire odorizing pump. Utility Model Content

[0004] To address the problem of automatic pressure relief in the existing technology, this invention provides a safety pressure relief mechanism for an odor pump. This mechanism utilizes a valve stem and a cylindrical spring combined with a rear pressure relief hole to achieve automatic pressure relief. The specific technical solution is as follows: A safety pressure relief mechanism for an odor pump includes: an oil replenishing pump head; a front pressure relief hole and a rear pressure relief hole are respectively opened on both sides of the oil replenishing pump head; a medium inlet is opened in the middle of the front and rear pressure relief holes; a valve disc is provided at the top of the medium inlet; a valve stem is slidably connected inside the medium inlet; the valve stem is slidably installed inside the valve disc; a spring cover is installed at the top of the valve disc; a cylindrical spring is sleeved on the outside of the valve stem; and the top of the cylindrical spring is in contact with the spring cover.

[0005] Preferably, a valve seat is provided at the top of the medium inlet, and the valve disc is installed in the valve seat.

[0006] Preferably, a protective cover is installed on the top of the spring cap.

[0007] Preferably, a pressure relief sealing gasket is installed inside the medium inlet, and the valve stem is adapted to the pressure relief sealing gasket.

[0008] Preferably, the valve disc includes: a valve disc top, a valve disc middle, and a valve disc bottom, wherein the valve disc middle is installed at the bottom of the valve disc top, and the valve disc bottom is installed at the bottom of the valve disc middle, and the middle parts of the valve disc top, valve disc middle, and valve disc bottom are connected.

[0009] Preferably, an annular seat is installed on the outer wall of the top of the valve disc, the annular seat is flush with the bottom of the top of the valve disc, and two vertical protrusions are symmetrically installed on the side wall of the top of the valve disc, the vertical protrusions are flush with the top of the top of the valve disc, and the bottom of the vertical protrusions is connected to the annular seat.

[0010] Preferably, a collar is sleeved on the outer side of the top of the valve disc, and two slots are symmetrically opened on the inner wall of the collar. The slots correspond one-to-one with the vertical protrusions, and the slots are slidably connected to the vertical protrusions. A circular groove is opened at the bottom of the collar, and the circular groove communicates with the two slots. The circular groove is adapted to the circular seat.

[0011] Preferably, a fixing seat is fixedly installed on the top of the oil replenishment pump head, and an opening is opened in the middle of the fixing seat, which is adapted to the middle of the valve disc.

[0012] Preferably, the top of the fixing seat has four threaded holes equidistantly provided, the top of the collar is rotatably connected with four bolt heads equidistantly, the bottom of the bolt head is fixedly installed with a bolt rod, the bottom of the bolt rod extends out of the collar, the bolt rod corresponds one-to-one with the threaded holes, and the bolt rod is threadedly engaged with the threaded holes.

[0013] In addition, the odor pump safety pressure relief mechanism in the above-mentioned technical solution provided by this utility model may also have the following features: an oil replenishment chamber is provided on one side of the oil replenishment pump head.

[0014] In the above technical solution, the oil replenishment chamber is connected to the front pressure relief hole.

[0015] The safety pressure relief mechanism for an odor-adding pump of this utility model has the following advantages compared with the prior art:

[0016] 1. The safety pressure relief mechanism of this odor pump has a front pressure relief hole, a medium inlet and a rear pressure relief hole. Under normal circumstances, pressure is only relieved through the front pressure relief hole. When the pressure rises to exceed the set pressure, the hydraulic oil will push the valve stem upward, causing the valve stem to compress the cylindrical spring. As the valve stem moves a certain distance, the valve stem is exposed through the rear pressure relief hole, so that the hydraulic oil can be discharged into the pump box from the rear pressure relief hole, thereby avoiding damage to the diaphragm due to the overpressure of the hydraulic oil.

[0017] 2. The safety pressure relief mechanism of this odor pump is installed by mounting the collar on the valve disc and aligning the bolt rod with the threaded hole. By rotating the bolt head and bolt rod, the bolt rod is tightened in the threaded hole, thereby fixing the valve disc on the valve seat, which facilitates the replacement and maintenance of the valve disc and other structures. Attached Figure Description

[0018] Figure 1 A cross-sectional schematic diagram of the oil replenishment pump head provided by this utility model;

[0019] Figure 2 A three-dimensional structural diagram of the valve disc provided by this utility model;

[0020] Figure 3 A three-dimensional structural diagram of the fixing base provided by this utility model;

[0021] Figure 4 A three-dimensional structural diagram of the collar provided by this utility model;

[0022] in, Figures 1 to 4 The reference numerals and component names in the attached drawings are as follows: 1. Oil pump head, 2. Oil filling chamber, 3. Front pressure relief hole, 4. Medium inlet, 5. Rear pressure relief hole, 6. Valve seat, 7. Valve disc, 8. Fixed seat, 9. Collar, 10. Bolt rod, 11. Bolt head, 12. Threaded hole, 13. Valve stem, 14. Pressure relief sealing gasket, 15. Cylindrical compression spring, 16. Spring cover, 17. Protective cover, 71. Valve disc top, 72. Valve disc middle, 73. Valve disc bottom, 74. Vertical protrusion, 75. Circular seat, 81. Opening, 91. Slot, 92. Circular groove. Detailed Implementation

[0023] The following are specific implementation cases and appendices. Figures 1-4The present invention will be further described, but the present invention is not limited to these embodiments. The present invention provides a technical solution: a safety pressure relief mechanism for an odor pump, comprising: a replenishing pump head 1, with a front pressure relief hole 3 and a rear pressure relief hole 5 respectively opened on both sides of the replenishing pump head 1, the front pressure relief hole 3 and the rear pressure relief hole 5 being arranged horizontally, the rear pressure relief hole 5 being positioned higher than the front pressure relief hole 3, a medium inlet 4 being opened in the middle of the front pressure relief hole 3 and the rear pressure relief hole 5, the medium inlet 4 being arranged vertically, a valve disc 7 being provided at the top of the medium inlet 4, a valve stem 13 being slidably connected inside the medium inlet 4, the top of the valve stem 13 slidably extending out of the replenishing pump head 1, the valve stem 13 being slidably installed inside the valve disc 7, a spring cover 16 being threadedly installed at the top of the valve disc 7, a cylindrical compression spring 15 being sleeved on the outside of the valve stem 13, the top of the cylindrical compression spring 15 being in contact with the spring cover 16.

[0024] As a preferred option, the top of the medium inlet 4 is provided with a valve seat 6, and the valve disc 7 is installed in the valve seat 6.

[0025] As a preferred option, the outer wall of the spring cover 16 is provided with external threads, and a protective cover 17 is installed on the top thread of the spring cover 16. The protective cover 17 prevents unauthorized personnel from accidentally touching the valve by physical locking or blocking, avoiding safety accidents caused by operational errors. The protective cover can prevent collisions, wear or corrosion from external objects, and extend the service life of the safety valve.

[0026] As a preferred option, a pressure relief gasket 14 is installed inside the medium inlet 4. The valve stem 13 is adapted to the pressure relief gasket 14. When installing the pressure relief gasket 14, a special tool is used to slowly press the pressure relief gasket 14 into the mating surface. Avoid using rigid tools such as hammers to prevent damage to the pressure relief gasket 14. In the natural state, the valve stem 13 and the pressure relief gasket 14 are tightly attached.

[0027] As a preferred embodiment, the valve disc 7 further comprises: a valve disc top 71, a valve disc middle portion 72, and a valve disc bottom 73. The valve disc middle portion 72 is installed at the bottom of the valve disc top 71, and the valve disc bottom 73 is installed at the bottom of the valve disc middle portion 72. The middle portions of the valve disc top 71, valve disc middle portion 72, and valve disc bottom 73 are connected. The dimensions of the valve disc top 71, valve disc middle portion 72, and valve disc bottom 73 decrease sequentially, with the valve disc top 71 having the largest cross-section and the valve disc bottom 73 having the smallest cross-section.

[0028] As a preferred embodiment, a circular seat 75 is welded to the outer wall of the valve top 71. The circular seat 75 is flush with the bottom of the valve top 71. Two vertical protrusions 74 are symmetrically welded to the side wall of the valve top 71. The vertical protrusions 74 are arranged vertically and are flush with the top of the valve top 71. The bottom of the vertical protrusions 74 is connected to the circular seat 75.

[0029] As a preferred embodiment, a collar 9 is further provided on the outer side of the valve disc top 71. Two slots 91 are symmetrically opened on the inner wall of the collar 9. The top of the slots 91 extends to the top of the collar 9. The slots 91 correspond one-to-one with the vertical protrusions 74. The slots 91 and the vertical protrusions 74 are slidably connected. A circular groove 92 is provided at the bottom of the collar 9. The circular groove 92 communicates with the two slots 91. The circular groove 92 is adapted to the circular seat 75. The circular groove 92 and the circular seat 75 are used to limit the movement of the collar 9.

[0030] As a preferred option, the top of the oil pump head 1 is further fixedly mounted with a mounting base 8 by bolts, and the mounting base 8 has an opening 81 in the middle, which is adapted to the size of the valve disc center 72.

[0031] As a preferred embodiment, the top of the fixed base 8 is provided with four threaded holes 12 at equal intervals, and the top of the collar 9 is rotatably connected with four bolt heads 11 at equal intervals. The top of the bolt head 11 is provided with a hexagonal groove to facilitate the rotation of the bolt head 11 with tools. The bottom of the bolt head 11 is fixedly installed with a bolt rod 10, and the bottom of the bolt rod 10 extends out of the collar 9. The bolt rod 10 and the collar 9 are connected by a bearing. The bolt rod 10 corresponds one-to-one with the threaded holes 12, and the bolt rod 10 and the threaded holes 12 are threadedly engaged.

[0032] As a preferred option, furthermore, an oil replenishment chamber 2 is provided on one side of the oil replenishment pump head 1, and the oil replenishment chamber 2 is connected to the front pressure relief hole 3.

[0033] The oil replenishing pump head, oil replenishing chamber, pressure relief sealing gasket, and cylindrical compression spring in this case are existing technologies. The oil replenishing pump head and oil replenishing chamber are the same structure and connection method as those in the cited documents. As long as the oil replenishing pump head, oil replenishing chamber, pressure relief sealing gasket, and cylindrical compression spring meet the requirements of this case, they are all acceptable and not limited to a single model.

[0034] The specific types or circuit structures of the controllers for the electrical components mentioned in this application, as well as the circuit connection relationships between the electrical components and the accurate coordinated control of multiple power components, are all prior art. Therefore, the above content will not be elaborated upon in this application.

[0035] Working principle: All electrical components described in this application are connected to an external power supply and control switch during use. After installation, first check the installation, fixation, and safety precautions before use. During installation, the user first places the collar 9 on the top 71 of the valve disc, aligning the slot 91 with the protruding part 74, until the annular seat 75 enters the annular groove 92. Then, insert the bottom 73 of the valve disc into the valve seat 6, and then rotate the valve disc 7 to align the bolt rod 10 with the threaded hole 12, inserting each bolt rod 10 into the corresponding threaded hole 12. Then, by rotating the bolt head 11 with a tool, the bolt rod 10 is rotated and tightened into the threaded hole 12, thereby pressing and fixing the valve disc 7 onto the valve seat 6. Then, the valve rod 13 is inserted into the valve disc 7, so that the valve rod 13 is pressed onto the pressure relief sealing ring 14. Then, the cylindrical compression spring 15 is put on the valve rod 13. Finally, the spring cover 16 and the protective cover 17 are installed. The spring cover 16 is threadedly connected to the valve disc 7, so that the spring cover 16 presses the cylindrical compression spring 15. Then, the protective cover 17 is threadedly installed on the spring cover 16, thus completing the overall installation.

[0036] When the pressure in the natural gas pipeline increases, the pressure in the replenishing pump head 1 of the odorizing pump also increases. This causes the hydraulic oil in the replenishing chamber 2 of the replenishing pump head 1 to be released into the front pressure relief hole 3 and the medium inlet 4. Then, the hydraulic oil will push the valve stem 13 upward, causing the valve stem 13 to compress the cylindrical compression spring 15. As the valve stem 13 moves upward, it gradually exposes the rear pressure relief hole 5, allowing the hydraulic oil to enter the pump box for pressure relief.

[0037] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A stench pump safety relief mechanism comprising: The oil replenishing pump head (1) is characterized in that a front pressure relief hole (3) and a rear pressure relief hole (5) are respectively opened on both sides of the oil replenishing pump head (1). A medium inlet (4) is opened in the middle of the front pressure relief hole (3) and the rear pressure relief hole (5). A valve disc (7) is provided on the top of the medium inlet (4). A valve stem (13) is slidably connected in the medium inlet (4). The valve stem (13) is slidably installed in the valve disc (7). A spring cover (16) is installed on the top of the valve disc (7). A cylindrical compression spring (15) is sleeved on the outside of the valve stem (13). The top of the cylindrical compression spring (15) is in contact with the spring cover (16).

2. The stenched pump safety relief mechanism according to claim 1, wherein, A valve seat (6) is provided at the top of the medium inlet (4), and the valve disc (7) is installed in the valve seat (6).

3. The stenched pump safety relief mechanism according to claim 1, wherein, A protective cover (17) is installed on the top of the spring cap (16).

4. The stenched pump safety relief mechanism according to claim 1, wherein, A pressure relief gasket (14) is installed inside the medium inlet (4), and the valve stem (13) is adapted to the pressure relief gasket (14).

5. The stench pump relief mechanism of claim 1, wherein, The valve disc (7) includes: a valve disc top (71), a valve disc middle (72) and a valve disc bottom (73). The valve disc middle (72) is installed at the bottom of the valve disc top (71), and the valve disc bottom (73) is installed at the bottom of the valve disc middle (72). The middle parts of the valve disc top (71), valve disc middle (72) and valve disc bottom (73) are connected.

6. The stenched pump safety relief mechanism according to claim 5, wherein, A circular seat (75) is installed on the outer wall of the valve top (71). The circular seat (75) is flush with the bottom of the valve top (71). Two upright protrusions (74) are symmetrically installed on the side wall of the valve top (71). The upright protrusions (74) are flush with the top of the valve top (71). The bottom of the upright protrusions (74) is connected to the circular seat (75).

7. The odor-relieving pump safety pressure relief mechanism according to claim 6, characterized in that, A collar (9) is fitted on the outer side of the top (71) of the valve disc. Two slots (91) are symmetrically opened on the inner wall of the collar (9). The slots (91) correspond one-to-one with the vertical protrusions (74). The slots (91) and the vertical protrusions (74) are slidably connected. A circular groove (92) is opened at the bottom of the collar (9). The circular groove (92) communicates with the two slots (91). The circular groove (92) is adapted to the circular seat (75).

8. The stenched pump safety relief mechanism according to claim 7, wherein, The top of the oil pump head (1) is fixedly mounted with a mounting base (8), and the mounting base (8) has an opening (81) in the middle, which is adapted to the middle part (72) of the valve disc.

9. The stenched pump safety relief mechanism according to claim 8, wherein, The top of the fixed base (8) is provided with four threaded holes (12) at equal intervals. The top of the collar (9) is rotatably connected with four bolt heads (11) at equal intervals. The bottom of the bolt head (11) is fixedly installed with a bolt rod (10). The bottom of the bolt rod (10) extends out of the collar (9). The bolt rod (10) corresponds one-to-one with the threaded holes (12). The bolt rod (10) and the threaded hole (12) are threadedly engaged.

10. The stench pump relief mechanism of claim 1, wherein, The oil replenishment pump head (1) has an oil replenishment chamber (2) on one side, and the oil replenishment chamber (2) is connected to the front pressure relief hole (3).

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