Combined protection filter pressure reducing valve structure

Abstract

The utility model provides a kind of combined protective filter pressure reducing valve structure, including filter pressure reducing valve main body, protective upper cover, protective middle cover, inner screw protective cover, inner screw cylinder and protective lower cover, adjusting knob is installed on filter pressure reducing valve main body upper end, pressure gauge is installed in filter pressure reducing valve main body front end, filter cup is installed in filter pressure reducing valve main body lower end, the design solves the systemic protection of the overall lack of existing filter pressure reducing valve, not "protection" as a core design element, leading to product in harsh industrial environment (such as production line, mobile device) reliability reduces, life cycle shortens the problem, the utility model is through the collaborative design of "combined protective cover" and "quick-mounting type pressure gauge protection assembly", for pressure gauge, adjusting knob and filter cup the three most vulnerable parts provide effective physical protection, significantly reduce the damage risk caused by external force.

Description

Technical Field

[0001] This utility model is a combined protective filter pressure reducing valve structure, belonging to the field of filter pressure reducing valve technology. Background Technology

[0002] The filter pressure reducing valve is a core component in pneumatic control systems and fluid pipelines, integrating filtration, pressure regulation, and lubrication (in some models). Its function is to purify unstable compressed air containing impurities and moisture from air compressors or other pressure sources, and to stably reduce and precisely regulate its pressure to the working pressure required by the actuators (such as cylinders and pneumatic motors). Existing known filter pressure reducing valves typically consist of the following main modules: a filter unit, a pressure reducing unit, and a pressure gauge assembly. Current filter pressure reducing valve designs focus on functional implementation.

[0003] However, in existing filter pressure reducing valves, the pressure gauge (especially the glass dial) is directly exposed, making it highly susceptible to damage from bumps and drops during equipment transportation, installation, or routine maintenance. This can lead to dial breakage, pointer inaccuracy, or even media leakage. The upper adjustment knob lacks any protection and is easily bumped by personnel or materials during handling, causing changes in the set outlet pressure and affecting the accuracy of downstream actuators, potentially leading to production accidents. Simultaneously, the filter cup is fragile and unprotected, with low mechanical strength, making it equally vulnerable to breakage from external impacts. The overall lack of systematic protection, failing to consider "protection" as a core design element, results in reduced reliability and a shortened lifespan in harsh industrial environments (such as near production lines or on mobile equipment). Therefore, a filter pressure reducing valve structure with combined protection is urgently needed to address these problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a combined protective filter pressure reducing valve structure to solve the problems mentioned in the background technology. This utility model provides effective physical protection for the three most vulnerable parts, namely the pressure gauge, the adjusting knob and the filter cup, through the coordinated design of the "combined protective cover" and the "quick-install pressure gauge protection component", which significantly reduces the risk of damage caused by external forces.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined protective filter pressure reducing valve structure, comprising a filter pressure reducing valve body, a protective upper cover, a protective middle cover, an inner screw protective cover, an inner screw cylinder, and a protective lower cover. An adjusting knob is installed at the upper end of the filter pressure reducing valve body, a pressure gauge is installed at the front end of the filter pressure reducing valve body, and a filter cup is installed at the lower end of the filter pressure reducing valve body. The protective upper cover is fitted around the adjusting knob with a gap. A fixing ring is fixed to the outside of the protective upper cover, and an opening is formed at the front end of the fixing ring. A first magnetic strip is fixed to the left side wall of the opening, and a telescopic rubber sheet is provided on the right side of the opening. The protective middle cover is fixed to the lower end of the protective upper cover. The protective cover is installed outside the filter pressure reducing valve body. Side baffle plates are installed on both the left and right ends of the protective cover. The pressure gauge has external threads, and an internal thread protective cover is threaded onto the external threads. A buffer mounting ring is provided at the front end of the internal thread protective cover. A connecting plate is installed at the lower end of the protective cover through multiple knob screws. An internal threaded cylinder is fixed to the lower end of the connecting plate. The connecting plate and the internal threaded cylinder are sleeved on the upper end of the filter cup. An external threaded ring is screwed into the internal threaded cylinder. A lower protective cover is fixed to the lower end of the external threaded ring. A metal filter cup cage is provided inside the lower protective cover. A reinforcing ring is installed at the lower end of the metal filter cup cage. A buffer rubber ring is fixed to the lower end of the reinforcing ring.

[0006] Furthermore, a second magnetic strip is installed at the movable end of the telescopic rubber sheet.

[0007] Furthermore, the two side baffle plates are respectively connected to the round holes on the left and right sides of the filter pressure reducing valve body.

[0008] Furthermore, the buffer mounting ring abuts against the front edge of the pressure gauge.

[0009] Furthermore, each of the multiple knob screw knob portions is provided with a spring groove, and each of the multiple spring grooves is equipped with a return spring, the upper end of each of the multiple return springs abutting against the connecting plate.

[0010] Furthermore, the buffer rubber ring, reinforcing ring, and metal filter cup cage are all fitted onto the lower part of the filter cup.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a combined protective filter pressure reducing valve structure. Because it incorporates a protective upper cover, fixing ring, first magnetic strip, second magnetic strip, telescopic rubber sheet, protective middle cover, connecting plate, inner screw protective cover, buffer mounting ring, inner screw cylinder, protective lower cover, metal filter cup cage, reinforcing ring, and buffer rubber ring, the structure is reasonable. Through the coordinated design of the "combined protective cover" and the "quick-install pressure gauge protection component," it provides effective physical protection for the three most vulnerable parts: the pressure gauge, adjusting knob, and filter cup, significantly reducing the risk of damage caused by external forces. The adjusting knob is covered by the protective upper cover, effectively preventing accidental activation. The openable and closable telescopic rubber sheet allows for convenient operation when adjustment is needed, achieving a balance between protection and convenience. The pressure gauge is protected by the inner screw protective cover and buffer mounting ring, providing dual protection against frontal impact and vibration. The installation structure combines quick installation and sealing functions. The metal filter cup cage protects the fragile transparent filter cup. The combined protective cover can be easily disassembled, facilitating maintenance and upkeep of internal components, making it highly practical. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a structural schematic diagram of a combined protective filter pressure reducing valve according to the present invention.

[0014] Figure 2 This is a schematic diagram of the main structure of a filter pressure reducing valve with a combined protective structure according to this utility model.

[0015] Figure 3 This is a schematic diagram of the disassembly structure of the metal filter cup cage of the combined protective filter pressure reducing valve structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the knob screw structure of a combined protective filter pressure reducing valve structure according to this utility model.

[0017] In the diagram: 1-Filter pressure reducing valve body, 2-Adjusting knob, 3-Pressure gauge, 4-Filter cup, 5-Upper protective cover, 6-Fixing ring, 7-Opening cavity, 8-First magnetic strip, 9-Second magnetic strip, 10-Telescopic rubber sheet, 11-Middle protective cover, 12-Side baffle plate, 13-Connecting plate, 14-Inner thread protective cover, 15-Buffer mounting ring, 16-External thread, 17-Knob screw, 18-Spring groove, 19-Reset spring, 20-Inner thread cylinder, 21-Lower protective cover, 22-External thread ring, 23-Metal filter cup cage, 24-Reinforcing ring, 25-Buffer rubber ring. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Please see Figures 1-4 This utility model provides a technical solution: a combined protective filter pressure reducing valve structure, including a filter pressure reducing valve body 1, a protective upper cover 5, a protective middle cover 11, an inner screw protective cover 14, an inner screw cylinder 20, and a protective lower cover 21. An adjusting knob 2 is installed on the upper end of the filter pressure reducing valve body 1, a pressure gauge 3 is installed on the front end of the filter pressure reducing valve body 1, and a filter cup 4 is installed on the lower end of the filter pressure reducing valve body 1. The protective upper cover 5 is fitted around the adjusting knob 2, and a fixing ring 6 is fixed to the outside of the protective upper cover 5. An opening 7 is provided at the front end of the fixing ring 6, a first magnetic strip 8 is fixed to the left side wall of the opening 7, and a telescopic rubber sheet 10 is provided on the right side of the opening 7. The protective middle cover 11 is fixed to the lower end of the protective upper cover 5 and covers the outside of the filter pressure reducing valve body 1. Side baffle plates 12 are installed on both the left and right ends of the protective middle cover 11. An external screw is provided on the outside of the pressure gauge 3. The filter cup 4 has a filter with a filter thread 16 and an inner threaded protective cover 14 threaded onto the outer thread 16. A buffer mounting ring 15 is provided at the front end of the inner threaded protective cover 14. A connecting plate 13 is installed at the lower end of the protective cover 11 through multiple knob screws 17. An inner threaded cylinder 20 is fixed to the lower end of the connecting plate 13. The connecting plate 13 and the inner threaded cylinder 20 are fitted onto the upper part of the filter cup 4. An outer threaded ring 22 is screwed into the inner threaded cylinder 20. A lower protective cover 21 is fixed to the lower end of the outer threaded ring 22. A metal filter cup cage 23 is provided inside the lower protective cover 21. A reinforcing ring 24 is installed at the lower end of the metal filter cup cage 23. A buffer rubber ring 25 is fixed to the lower end of the reinforcing ring 24. This design solves the problem that the existing filter pressure reducing valve lacks systematic protection and does not take "protection" as a core design element, resulting in reduced reliability and shortened life cycle of the product in harsh industrial environments.

[0020] As the first embodiment of this utility model: a second magnetic strip 9 is installed on the movable end of the telescopic rubber sheet 10. By adding the second magnetic strip 9 and cooperating with the first magnetic strip 8, the telescopic rubber sheet 10 can be firmly attached to the edge of the opening 7 when closed, effectively preventing the adjustment knob 2 inside the protective cover 5 from being invaded by dust or accidentally bumped. At the same time, when operation is required, the telescopic rubber sheet 10 can be easily pulled open and a tool can be inserted for pressure adjustment.

[0021] The two side baffle plates 12 are respectively connected to the round holes on the left and right sides of the filter pressure reducing valve body 1. By adding the side baffle plates 12, the normal air passage and connection function of the process interfaces on the left and right sides of the filter pressure reducing valve body 1 can be ensured, while the left and right sides of the filter pressure reducing valve body 1 can also be protected.

[0022] The buffer mounting ring 15 abuts against the front edge of the pressure gauge 3. With the addition of the buffer mounting ring 15, when the inner screw protective cover 14 is subjected to a frontal impact, it can effectively absorb and buffer the energy transmitted to the dial of the pressure gauge 3, significantly reducing the risk of dial breakage and pointer damage.

[0023] Each of the multiple knob screws 17 has a spring groove 18, and each of the multiple spring grooves 18 has a return spring 19 installed in it. The upper end of each of the multiple return springs 19 abuts against the connecting plate 13. The added return springs 19 provide an upward elastic force when the knob screws 17 are loosened, which automatically lifts the connecting plate 13, making it easy to quickly remove the protective cover 11, the connecting plate 13 and the lower components from the filter pressure reducing valve body 1, thus simplifying the disassembly and maintenance process.

[0024] The buffer rubber ring 25, the reinforcing ring 24, and the metal filter cup cage 23 are all fitted around the lower part of the filter cup 4. The added metal filter cup cage 23 provides a sturdy metal frame for the fragile transparent filter cup 4 to resist external impacts. The reinforcing ring 24 enhances the structural strength of the lower part of the cage. The buffer rubber ring 25 plays a role in cushioning and preventing slippage when the device is placed on a table or subjected to impact from the bottom.

[0025] As a second embodiment of this utility model: the inner thread protective cover 14 is screwed onto the outer thread 16 of the pressure gauge 3 by the thread, and the internal buffer mounting ring 15 is tightly pressed against the edge of the pressure gauge 3 dial to complete the quick installation and protection of the pressure gauge.

[0026] Next, the assembled upper protective cover 5 and middle protective cover 11 are fitted over the outside of the filter pressure reducing valve body 1 from top to bottom. The upper protective cover 5 completely covers the adjusting knob 2, and the first magnetic strip 8 and the second magnetic strip 9 are attracted together, causing the telescopic rubber sheet 10 to be in a normally closed state under magnetic attraction, thereby blocking the opening 7 and preventing accidental contact and contamination. Then, the connecting plate 13 and the inner screw cylinder 20 are fitted over the upper part of the filter cup 4 from bottom to top, and then fixed to the lower end of the middle protective cover 11 by multiple knob screws 17. When the knob screws 17 are tightened, the elastic force of the return spring 19 is overcome, and the entire protective cover system is firmly pressed onto the valve body.

[0027] Finally, the lower protective cover 21 is fitted over the filter cup 4 from bottom to top. The lower protective assembly, consisting of the metal filter cup cage 23, the reinforcing ring 24, and the buffer rubber ring 25, is inserted from the bottom of the filter cup 4 until the external threaded ring 22 at the upper end of the lower protective cover 21 is screwed into the internal threaded cylinder 20. As it is tightened, the entire lower protective assembly is pulled upwards, the metal filter cup cage 23 tightly wraps around the filter cup 4, and the buffer rubber ring 25 abuts against the lower end of the inner side of the lower protective cover 21.

[0028] When pressure adjustment is required, the operator simply pulls open the telescopic rubber sheet 10 in front of the retaining ring 6, forcing the first magnetic strip 8 and the second magnetic strip 9 to separate. The operator can then use tools through the opening 7 to operate the internal adjustment knob 2. After operation, pulling the telescopic rubber sheet 10 to the left causes the first magnetic strip 8 and the second magnetic strip 9 to automatically reset and close under magnetic force. When maintenance or observation of the filter cup 4 is required, simply unscrew the lower protective cover 21; there is no need to disassemble the entire upper structure.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A combined protective filter pressure reducing valve structure, comprising a filter pressure reducing valve body (1), a protective upper cover (5), a protective middle cover (11), an inner screw protective cover (14), an inner screw cylinder (20), and a protective lower cover (21), characterized in that: An adjustment knob (2) is installed on the upper end of the filter pressure reducing valve body (1). A pressure gauge (3) is installed on the front end of the filter pressure reducing valve body (1). A filter cup (4) is installed on the lower end of the filter pressure reducing valve body (1). A protective upper cover (5) is fitted around the adjustment knob (2). A fixing ring (6) is fixed on the outside of the protective upper cover (5). An opening (7) is opened at the front end of the fixing ring (6). A first magnetic strip (8) is fixed on the left side wall of the opening (7). A telescopic rubber sheet (10) is provided on the right side of the opening (7). A protective middle cover (11) is fixed at the lower end of the protective upper cover (5). The protective middle cover (11) covers the outside of the filter pressure reducing valve body (1). Side baffle plates (12) are installed on both the left and right ends of the protective middle cover (11). External threads are provided on the outside of the pressure gauge (3). (16), and an inner thread protective cover (14) is provided at the external thread (16) by thread. A buffer mounting ring (15) is provided at the front end of the inner thread protective cover (14). A connecting plate (13) is installed at the lower end of the protective cover (11) by multiple knob screws (17). An inner thread cylinder (20) is fixed at the lower end of the connecting plate (13). The connecting plate (13) and the inner thread cylinder (20) are sleeved on the upper end of the filter cup (4). An external thread ring (22) is screwed into the inner thread cylinder (20) by thread. A protective lower cover (21) is fixed at the lower end of the external thread ring (22). A metal filter cup cage (23) is provided inside the protective lower cover (21). A reinforcing ring (24) is installed at the lower end of the metal filter cup cage (23). A buffer rubber ring (25) is fixed at the lower end of the reinforcing ring (24).

2. The combined protection filter pressure reducing valve structure according to claim 1, characterized in that: The movable end of the telescopic rubber sheet (10) is equipped with a second magnetic strip (9).

3. The combined protection filter pressure reducing valve structure according to claim 1, characterized in that: The two side baffle plates (12) are respectively connected to the left and right round holes of the filter pressure reducing valve body (1).

4. The combined protection filter pressure reducing valve structure according to claim 1, characterized in that: The buffer mounting ring (15) abuts against the front edge of the pressure gauge (3).

5. The combined protection filter pressure reducing valve structure according to claim 1, characterized in that: Each of the multiple knob screws (17) has a spring groove (18) on its knob part, and a return spring (19) is installed in each of the multiple spring grooves (18). The upper ends of the multiple return springs (19) abut against the connecting plate (13).

6. The combined protection filter pressure reducing valve structure according to claim 1, characterized in that: The buffer rubber ring (25), reinforcing ring (24) and metal filter cup cage (23) are all fitted on the lower part of the outside of the filter cup (4).

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