A filter pressure reducing valve

Abstract

This utility model relates to a filter pressure reducing valve, including a valve body, an inlet pipe, and an outlet pipe. The inlet pipe is connected to one side of the valve body, and the outlet pipe is connected to the other side. A connecting pipe is connected between the valve body and the outlet pipe, and a pressure gauge is connected to the end of the connecting pipe via a mounting assembly. An adjusting rod extending to the outside for pressure adjustment is connected inside the valve body, and a handle assembly is connected to the end of the adjusting rod. In this filter pressure reducing valve, an internally threaded tube is fitted onto the surface of a convex thread. Rotating the internally threaded tube with a knob allows for axial movement. The pressure gauge can then be rotated to adjust its dial angle according to usage requirements. Continuing to rotate the internally threaded tube causes the pressure ring to press against the outer edge ring, achieving a sealed connection through a sealing ring. This allows for adjustment of the pressure gauge dial angle as needed.

Description

Technical Field

[0001] This utility model belongs to the field of valve product technology, and specifically relates to a filter pressure reducing valve. Background Technology

[0002] A filter pressure reducing valve is a device that integrates filtration and pressure reduction functions. It is primarily used in gas pipeline systems to ensure safe and stable system operation by regulating and stabilizing pressure. Its core structure includes a filter, a pressure reducing valve, and auxiliary components. Its working principle involves pressure regulation, diaphragm sensing, and piston control. Applications cover the transportation of various gases such as air, nitrogen, and oxygen. A pressure gauge is mounted on the surface of the filter pressure reducing valve to detect the internal pressure and allow for timely pressure adjustment.

[0003] In the prior art, a Chinese utility model patent (application number 202021220353.X) discloses a filter pressure reducing valve. This filter pressure reducing valve, through the setting of the force of the pressure regulating spring and the valve core spring, and the control of the valve cover depth, allows the output pressure to directly reach between 0.7MPa and 0.8MPa without the need for a pressure regulating device. At the same time, after compressed air enters the filter valve body through the inlet, it generates strong rotation inside due to the guidance of the cyclone blades. Under the action of centrifugal force, large solid impurities, liquid water droplets, and oil droplets mixed in the air are thrown onto the inner surface of the water cup. Under the action of gravity, they settle down to the bottom along the wall. The rotation of the cyclone blades drives the scraper to rotate, causing the scraper to scrape off the sticky impurities on the inner surface of the water cup and throw them to the bottom of the water cup, where they are discharged by a manual or automatic drainer. When the air passes through the filter element, due to the effects of direct interception and inertial deposition, smaller solid dust and some water and oil contained in the air are trapped on the surface and inside of the filter element.

[0004] When installing pressure gauges on the aforementioned filter pressure reducing valves, a direct thread connection structure is generally adopted. That is, the pressure gauge is directly fixed to the pre-set threaded hole of the valve body through a standard threaded interface. This connection method results in the pressure gauge's dial angle being completely locked after installation, making it impossible to flexibly adjust according to the actual usage scenario. This leads to problems such as dial reflection and poor viewing angle, making it difficult for operators to clearly read the pressure value, thereby affecting the equipment debugging efficiency and operational safety. Utility Model Content

[0005] The purpose of this utility model is to provide a filter pressure reducing valve, which aims to solve the problem that the current filter pressure reducing valves generally adopt a threaded direct connection structure when installing pressure gauges. That is, the pressure gauge is directly fixed to the pre-set threaded hole of the valve body through a standard threaded interface. This connection method causes the dial angle of the pressure gauge to be completely locked after installation, and it is impossible to flexibly adjust it according to the actual use scenario.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a filter pressure reducing valve, comprising a valve body, an input pipe, and an output pipe, wherein the input pipe is connected through one side of the valve body, and the output pipe is connected through the other side of the valve body, and a connecting pipe is connected through the connection between the valve body and the output pipe, wherein a pressure gauge is connected to the end of the connecting pipe via an installation assembly, and an adjusting rod extending to the outside for adjusting pressure is connected inside the valve body, wherein a handle assembly is connected to the end of the adjusting rod.

[0007] As a filter pressure reducing valve of this utility model, preferably, the mounting assembly includes a convex thread, an outer ring, a sealing ring, an internal threaded tube, a clamping ring, and a knob. The convex thread is connected to the outer surface of the connecting tube, and the surface of the convex thread is fitted with a threaded internal threaded tube.

[0008] As a filter pressure reducing valve of this utility model, preferably, the end of the rod of the pressure gauge is connected to an outer ring disposed inside the internal threaded tube, and sealing rings are respectively bonded to both sides of the outer ring. The end of the internal threaded tube is connected to a clamping ring sleeved on the surface of the pressure gauge rod, and a knob is connected between the outer surface of the internal threaded tube and the clamping ring.

[0009] As a filter pressure reducing valve of this utility model, preferably, the inner wall diameter of the compression ring is smaller than the outer wall diameter of the outer edge ring, and the outer wall diameter of the outer edge ring is the same as the outer wall diameter of the connecting pipe opening.

[0010] As a filter pressure reducing valve of this utility model, preferably, the handle assembly includes an annular frame, a rotating rod, a handle, a spring strip, a fixing hole, a threaded hole, and a fixing bolt. The annular frame is connected to the end of the adjusting rod, the rotating rod passes through the side surface of the annular frame, the handle is connected to the end of the rotating rod, and the spring strip connected to the inner wall of the annular frame is connected to the side wall of the handle. The rotating rod and the spring strip are symmetrically arranged on both sides of the handle.

[0011] As a filter pressure reducing valve of this utility model, preferably, the side surface of the handle is provided with a fixing hole, the side surface of the ring frame is provided with a threaded hole, the threaded hole is provided with a threaded fixing bolt, and the handle moves to the side of the fixing bolt after rotating the fixing hole by 90°.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this utility model, an internally threaded tube is sleeved on the surface of a convex thread. By rotating the internally threaded tube on the surface of the convex thread, the internally threaded tube can move axially. Then, the pressure gauge can be rotated to adjust its dial angle according to the needs of use. Then, the internally threaded tube is rotated by the knob. When the internally threaded tube drives the pressure ring to squeeze the outer edge ring, a sealing connection is achieved through the set sealing rubber ring. Thus, the dial angle of the pressure gauge can be adjusted according to the needs of use.

[0014] In this invention, the grip can rotate a fixing bolt after rotating the grip 90°. When the fixing bolt rotates inside the threaded hole, it moves axially. When the fixing bolt moves into the inside of the fixing hole, the position of the grip can be fixed, thus making it convenient to apply force to rotate the adjusting rod by the grip, avoiding the large space occupied by directly setting a horizontal grip. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall assembly structure provided for an embodiment of this application.

[0017] Figure 2 The images show a cross-sectional view and a partial enlarged view of the installation component connection structure provided in the embodiments of this application.

[0018] Figure 3 This is an exploded cross-sectional view of the installation component provided in an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the grip assembly connection structure provided in an embodiment of this application.

[0020] Figure 5 This is a cross-sectional view of the grip assembly connection structure provided in an embodiment of this application.

[0021] Figure 6 This is an exploded view of the grip structure after rotation, provided in an embodiment of this application.

[0022] In the diagram: 1. Valve body; 2. Inlet pipe; 3. Outlet pipe; 4. Connecting pipe; 5. Pressure gauge; 6. Adjusting rod; 7. Mounting assembly; 701. Raised thread; 702. Outer ring; 703. Sealing ring; 704. Internal threaded pipe; 705. Compression ring; 706. Knob; 8. Handle assembly; 801. Ring frame; 802. Rotating rod; 803. Handle; 804. Spring bar; 805. Fixing hole; 806. Threaded hole; 807. Fixing bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 The present invention provides the following technical solution: a filter pressure reducing valve, comprising a valve body 1, an input pipe 2 and an output pipe 3, wherein the input pipe 2 is connected through one side of the valve body 1 and the output pipe 3 is connected through the other side of the valve body 1, a connecting pipe 4 is connected through the connection between the valve body 1 and the output pipe 3, and a pressure gauge 5 is connected to the end of the connecting pipe 4 through an installation assembly 7; an adjusting rod 6 extending to the outside for adjusting pressure is connected inside the valve body 1, and a handle assembly 8 is connected to the end of the adjusting rod 6.

[0025] High-pressure medium enters the valve body 1 from the input pipe 2. The flow rate of the medium is then adjusted by the opening degree of the opening and closing element inside the valve body 1, thereby reducing the pressure of the medium. At the same time, the opening degree of the opening and closing element is adjusted by the downstream pressure of the valve body 1 to keep the downstream pressure within a certain range. The filter pressure reducing valve uses a PE microporous filter element, which can filter impurities such as oil, water, and dust in the compressed air. The filtration accuracy is usually 5μm, protecting downstream equipment from contamination. Then the medium is discharged from the output pipe 3.

[0026] Preferably, the mounting assembly 7 includes a convex thread 701, an outer edge ring 702, a sealing ring 703, an internal thread tube 704, a clamping ring 705, and a knob 706. The convex thread 701 is connected to the outer surface of the connecting tube 4, and the surface of the convex thread 701 is fitted with the internal thread tube 704 with threaded mating.

[0027] Preferably, the rod end of the pressure gauge 5 is connected to an outer edge ring 702 located inside the internal threaded tube 704, and sealing rings 703 are respectively bonded to both sides of the outer edge ring 702. The end of the internal threaded tube 704 is connected to a clamping ring 705 sleeved on the surface of the rod of the pressure gauge 5, and a knob 706 is connected to the outer surface of the internal threaded tube 704 and the clamping ring 705.

[0028] In practical use, the internally threaded tube 704 can move axially when it rotates on the surface of the convex thread 701, thereby driving the clamping ring 705 to move axially through the internally threaded tube 704.

[0029] Preferably, the inner diameter of the compression ring 705 is smaller than the outer diameter of the outer ring 702, and the outer diameter of the outer ring 702 is the same as the outer diameter of the opening of the connecting pipe 4.

[0030] In practical use, when the clamping ring 705 moves axially, it can squeeze the outer edge ring 702, thereby pressing the outer edge ring 702 onto the end of the connecting pipe 4. The sealing ring 703 can also achieve a sealing effect, thus preventing air leakage and causing errors in the pressure gauge 5's detection structure.

[0031] Preferably, the grip assembly 8 includes a ring frame 801, a rotating rod 802, a grip 803, a spring bar 804, a fixing hole 805, a threaded hole 806, and a fixing bolt 807. The ring frame 801 is connected to the end of the adjusting rod 6. The rotating rod 802 passes through the side surface of the ring frame 801. The end of the rotating rod 802 is connected to the grip 803. The side wall of the grip 803 is connected to the spring bar 804, which is connected to the inner wall of the ring frame 801. The rotating rod 802 and the spring bar 804 are symmetrically arranged on both sides of the grip 803.

[0032] In practical use, when the grip 803 is subjected to a force, it can rotate around the center line of the rotating rod 802. When the grip 803 rotates, it can pull the spring strip 804 to deform. When the force on the grip 803 disappears, the spring strip 804 will drive the grip 803 to return to its original position through its own elasticity.

[0033] Preferably, the side surface of the grip 803 is provided with a fixing hole 805, and the side surface of the ring frame 801 is provided with a threaded hole 806. A threaded fixing bolt 807 passes through the threaded hole 806, and the grip 803 moves to the side of the fixing bolt 807 after rotating the fixing hole 805 by 90°.

[0034] In practical use, the handle 803 can rotate 90° around the center line of the rotating rod 802 to rotate the fixing bolt 807. When the fixing bolt 807 rotates inside the threaded hole 806, it can move axially. When the fixing bolt 807 moves into the fixing hole 805, the position of the handle 803 can be fixed.

[0035] The working principle of this utility model in specific use is as follows: When installing the pressure gauge 5, firstly, the internal threaded tube 704 is sleeved on the surface of the convex thread 701 and the internal threaded tube 704 is rotated by the knob 706. When the internal threaded tube 704 rotates on the surface of the convex thread 701, it can move axially. Then, the pressure gauge 5 can be rotated to adjust its dial angle according to the needs of use. Then, the internal threaded tube 704 is rotated by the knob 706. When the internal threaded tube 704 drives the pressure ring 705 to squeeze the outer edge ring 702, the sealing connection is achieved by the sealing rubber ring 703.

[0036] When it is necessary to adjust the internal pressure of the valve body 1 by adjusting the lever 6, the handle 803 can be pushed. The handle 803 can rotate when squeezed and pull the spring strip 804 to deform. After the handle 803 rotates 90°, the fixing bolt 807 can be rotated. When the fixing bolt 807 rotates inside the threaded hole 806, it can move axially. When the fixing bolt 807 moves into the fixing hole 805, the position of the handle 803 can be fixed. Then, the handle 803 can be held to easily apply force to rotate the adjusting lever 6.

[0037] After adjustment, the fixing bolt 807 can be rotated in the opposite direction. The fixing bolt 807 can move away from the fixing hole 805 when rotated in the opposite direction. When the fixing bolt 807 moves to the outside of the fixing hole 805, the spring bar 804 drives the handle 803 to reset through its own elasticity.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 filter pressure reducing valve, comprising a valve body (1), an inlet pipe (2), and an outlet pipe (3), characterized in that: An input pipe (2) is connected through one side of the valve body (1), and an output pipe (3) is connected through the other side of the valve body (1). A connecting pipe (4) is connected through the connection between the valve body (1) and the output pipe (3). A pressure gauge (5) is connected to the end of the connecting pipe (4) via an installation assembly (7). An adjusting rod (6) extending to the outside for adjusting pressure is connected inside the valve body (1). A handle assembly (8) is connected to the end of the adjusting rod (6).

2. The filter pressure reducing valve according to claim 1, characterized in that: The mounting assembly (7) includes a convex thread (701), an outer ring (702), a sealing ring (703), an internal threaded tube (704), a clamping ring (705), and a knob (706). The convex thread (701) is connected to the outer surface of the connecting tube (4), and the surface of the convex thread (701) is fitted with a threaded internal threaded tube (704).

3. A filter pressure reducing valve according to claim 2, characterized in that: The rod end of the pressure gauge (5) is connected to an outer ring (702) located inside an internal threaded tube (704). Sealing rings (703) are bonded to both sides of the outer ring (702). The end of the internal threaded tube (704) is connected to a clamping ring (705) fitted onto the surface of the rod of the pressure gauge (5). A knob (706) is connected to the outer surface of the internal threaded tube (704) and the clamping ring (705).

4. A filter pressure reducing valve according to claim 3, characterized in that: The inner diameter of the compression ring (705) is smaller than the outer diameter of the outer ring (702), and the outer diameter of the outer ring (702) is the same as the outer diameter of the opening of the connecting pipe (4).

5. A filter pressure reducing valve according to claim 1, characterized in that: The grip assembly (8) includes a ring frame (801), a rotating rod (802), a grip (803), a spring strip (804), a fixing hole (805), a threaded hole (806), and a fixing bolt (807). The ring frame (801) is connected to the end of the adjusting rod (6). The rotating rod (802) passes through the side surface of the ring frame (801). The end of the rotating rod (802) is connected to the grip (803). The side wall of the grip (803) is connected to the spring strip (804) which is connected to the inner wall of the ring frame (801). The rotating rod (802) and the spring strip (804) are symmetrically arranged on both sides of the grip (803).

6. A filter pressure reducing valve according to claim 5, characterized in that: The grip (803) has a fixing hole (805) on its side surface, and the ring frame (801) has a threaded hole (806) on its side surface. A threaded fixing bolt (807) passes through the threaded hole (806), and the grip (803) moves to the side of the fixing bolt (807) after rotating the fixing hole (805) by 90°.

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