Plug-in mounting type pilot pressure reducing valve

Abstract

The utility model discloses a plug-in mounting type pilot pressure reducing valve, and belongs to the technical field of pilot pressure reducing valves. The two sides of the valve body are both provided with inserting structures, each inserting structure comprises connecting pipes arranged on the two sides of the valve body, the ends, close to the valve body, of the connecting pipes extend into the valve body and are connected with the valve body in an inserting mode, the two sides of the bottom of the valve body are both fixedly connected with connecting blocks, and the surfaces of the connecting blocks are movably connected with shifting forks through pin shafts; the front face and the back face of the connecting pipe are fixedly connected with sliding rods, and the side, away from the connecting block, of the shifting fork extends to the outer side of the connecting pipe in a sleeving mode. The push rod is extruded through the transmission structure, the shifting fork connected with the push rod swings with the pin shaft in the connecting block as the axis, the connecting pipe is pushed through the sliding rod in the swinging process of the shifting fork, the connecting pipe extends towards the outer side from the interior of the valve body, and when the connecting pipe is inserted into pipelines on the two sides, the effect that the valve body is connected in an inserted mode is achieved; and the mounting convenience of the valve body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pilot pressure reducing valves, in particular to a plug-in pilot pressure reducing valve. Background Art

[0002] The pilot pressure reducing valve is a direct-acting diaphragm spring pressure reducing valve, which is designed and manufactured on the basis of absorbing the advantages of similar foreign products. It is mainly composed of diaphragm, step-shaped valve disc, adjusting spring and other parts. The diaphragm is used to sense the downstream pressure change to drive the valve disc, change and control the valve opening to achieve the pressure reducing and stabilizing function, and the outlet pressure value is set by adjusting the spring pressure.

[0003] For example, the patent number disclosed in the China Patent Network is: 201820633086.5, and the patent name is: Pilot pressure reducing valve, including a valve body, the valve body has a main valve cavity, the main valve cavity is provided with a main valve seat and a main valve core used therewith, the valve body is provided with an air inlet and an air outlet on both sides of the main valve seat, the valve body also has a pilot valve cavity, the pilot valve cavity is provided with a pilot valve seat and a pilot valve core used therewith, the pilot valve cavity has an air inlet side and an air outlet side located on both sides of the pilot valve seat, the main valve core is provided with a valve stem, the valve body is provided with an opening and closing member for driving the valve stem to drive the main valve core to open, the valve body is provided with an opening and closing cavity connected with the air outlet side of the pilot valve cavity for driving the opening and closing member to move, the valve stem is provided with a gas channel connected with the air inlet and the air inlet side so as to input gas into the opening and closing cavity through the pilot valve cavity when the pilot valve core is opened.

[0004] However, the connection method of the existing pilot pressure reducing valve is relatively simple. The distance between the pipes on both sides needs to be equal to the width of the pilot pressure reducing valve. The excessively long distance affects the connection stability of the pilot pressure reducing valve, and the pilot pressure reducing valve is prone to leakage.

[0005] Therefore, it is necessary to redesign the pilot pressure reducing valve. Utility Model Content

[0006] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a plug-in pilot pressure-reducing valve, which has the advantage of improving the convenience of connection, and solves the problem that the connection method of the existing pilot pressure-reducing valve is relatively single, the spacing between the pipes on both sides needs to be equal to the width of the pilot pressure-reducing valve, and the excessively long spacing causes the connection stability of the pilot pressure-reducing valve to be affected, and the pilot pressure-reducing valve is prone to leakage.

[0007] The utility model provides the following technical solution: a plug-in pilot pressure reducing valve, comprising a valve body;

[0008] Both sides of the valve body are provided with plug-in structures;

[0009] The plug-in structure includes connecting pipes arranged on both sides of the valve body, one end of the connecting pipe close to the valve body extends to the interior of the valve body and is plugged into the valve body, both sides of the bottom of the valve body are fixedly connected with connecting blocks, the surface of the connecting block is movably connected with a fork through a pin shaft, the front and back sides of the connecting pipe are fixedly connected with a sliding rod, the side of the fork away from the connecting block is sleeved and extends to the outside of the connecting pipe, the fork is sleeved on the surface of the sliding rod, the sliding rod is slidably connected to the fork, and a transmission structure is provided at the bottom of the valve body, the transmission structure is located on the inner side of the connecting block, and the transmission structure can drive the fork to swing. The transmission structure includes a screw rod movably connected to the bottom of the valve body through a bearing, the screw rod is located on the inner side of the connecting block, the surface of the screw rod is threadedly connected with a screw sleeve, the side of the fork close to the connecting block is fixedly connected with a push rod, the side of the push rod away from the fork extends to the outside of the screw sleeve, the front and back sides of the screw sleeve are fixedly connected with pressure rods, the side of the pressure rod away from the screw sleeve extends to the bottom of the push rod, the outer surface of the pressure rod contacts the surface of the push rod, and the side of the screw rod away from the valve body is fixedly connected with a rotating wheel, and the rotating wheel is located at the bottom of the screw sleeve.

[0010] The beneficial effects of the utility model are as follows:

[0011] 1. The utility model squeezes the push rod through the transmission structure, so that the fork connected to the push rod swings with the pin shaft inside the connecting block as the axis. During the swinging process of the fork, the sliding rod is used to push the connecting pipe, so that the connecting pipe extends from the inside of the valve body to the outside. When the connecting pipe is plugged into the inside of the pipes on both sides, the effect of plugging and connecting the valve body is achieved, thereby improving the convenience of valve body installation.

[0012] 2. The utility model can promote the stable swing of the shift fork by arranging a screw, a screw sleeve, a push rod and a pressure rod, and can keep the moving distance of the shift forks on both sides consistent. The utility model can support the screw sleeve by arranging a support frame, and can improve the contact stability between the screw and the valve body. The utility model can limit the screw sleeve by arranging a limit groove and a limit block, and avoid the phenomenon of the screw sleeve tilting during movement. The utility model can protect the pressure rod by arranging a sleeve, and reduce the wear of the pressure rod and the push rod during contact friction. The utility model can improve the plug-in stability of the connecting pipe by arranging an extension ring, and prevent the connecting pipe from leaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the main structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the structure of the utility model when viewed from above. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] like Figures 1 to 3 As shown, the plug-in pilot pressure reducing valve of this embodiment includes a valve body 1; a plug-in structure 2 is provided on both sides of the valve body 1; the plug-in structure 2 includes connecting pipes 3 arranged on both sides of the valve body 1, and one end of the connecting pipe 3 close to the valve body 1 extends to the inside of the valve body 1 and is plugged into the valve body 1, and both sides of the bottom of the valve body 1 are fixedly connected with connecting blocks 4, and the surface of the connecting block 4 is movably connected with a fork 5 through a pin shaft, and the front and back sides of the connecting pipe 3 are fixedly connected with a sliding rod 6, and the side of the fork 5 away from the connecting block 4 is sleeved and extended to the outside of the connecting pipe 3, and the fork 5 is sleeved on the surface of the sliding rod 6, and the sliding rod 6 is slidably connected with the fork 5, and a transmission structure 7 is provided at the bottom of the valve body 1, and the transmission structure 7 is located on the inner side of the connecting block 4, and the transmission structure 7 can drive the fork 5 to swing.

[0018] refer to Figure 3 The transmission structure 7 includes a screw 8 movably connected to the bottom of the valve body 1 through a bearing, the screw 8 is located on the inner side of the connecting block 4, and the surface of the screw 8 is threadedly connected with a screw sleeve 9. The side of the fork 5 close to the connecting block 4 is fixedly connected with a push rod 10, and the side of the push rod 10 away from the fork 5 extends to the outside of the screw sleeve 9, and both sides of the front and back of the screw sleeve 9 are fixedly connected with a pressure rod 11, and the side of the pressure rod 11 away from the screw sleeve 9 extends to the bottom of the push rod 10, and the outer surface of the pressure rod 11 contacts the surface of the push rod 10, and the side of the screw 8 away from the valve body 1 is fixedly connected with a rotating wheel 12, and the rotating wheel 12 is located at the bottom of the screw sleeve 9.

[0019] This embodiment can push the shift fork 5 to swing stably by arranging the screw rod 8, the screw sleeve 9, the push rod 10 and the pressure rod 11, and can make the moving distance of the shift forks 5 on both sides remain consistent.

[0020] refer to Figure 2 A support frame 13 is sleeved on the surface of the screw 8, and the support frame 13 is located between the screw sleeve 9 and the rotating wheel 12. The front and rear sides of the support frame 13 extend to both sides of the screw 8 respectively and are fixedly connected to the bottom of the valve body 1. The support frame 13 is movably connected to the screw 8 through a bearing.

[0021] In this embodiment, the support frame 13 is provided to support the screw sleeve 9 , thereby improving the contact stability between the screw rod 8 and the valve body 1 .

[0022] refer to Figure 2The front and back sides of the support frame 13 are provided with limiting grooves 14, and the front and back sides of the screw sleeve 9 are fixedly connected with limiting blocks 15. The limiting block 15 extends from the side away from the screw sleeve 9 to the inside of the limiting groove 14, and the limiting groove 14 and the limiting block 15 are slidably connected.

[0023] In this embodiment, the limiting groove 14 and the limiting block 15 are provided to limit the screw sleeve 9 and prevent the screw sleeve 9 from tilting during the movement.

[0024] refer to Figure 2 A sleeve 16 is sleeved on the surface of the pressure rod 11 , and the side of the sleeve 16 away from the screw sleeve 9 extends to the bottom of the push rod 10 , and the outer surface of the sleeve 16 contacts the bottom of the push rod 10 .

[0025] In this embodiment, the sleeve 16 is provided to protect the pressure rod 11 and reduce the wear of the pressure rod 11 and the push rod 10 during contact and friction.

[0026] refer to Figure 3 An extension ring 17 is fixedly connected to the surface of the connecting pipe 3 , and the extension ring 17 is located on the outer side of the sliding rod 6 .

[0027] In this embodiment, the extending ring 17 is provided to improve the plugging stability of the connecting pipe 3 and prevent the connecting pipe 3 from leaking.

[0028] The utility model moves the valve body 1 to between the pipes on both sides, and then the user rotates the rotating wheel 12, the rotating wheel 12 drives the screw rod 8 to rotate, the screw rod 8 uses the thread to push the screw sleeve 9 to move vertically, and the pressure rod 11 is used to squeeze the push rod 10 during the movement of the screw sleeve 9, so that the fork 5 connected to the push rod 10 swings with the pin shaft inside the connecting block 4 as the axis, and the sliding rod 6 is used to push the connecting pipe 3 during the swinging process of the fork 5, so that the connecting pipe 3 extends from the inside of the valve body 1 to the outside, and when the connecting pipe 3 is plugged into the inside of the pipes on both sides and the outside of the extension ring 17 contacts the surface of the pipes on both sides, the effect of plugging and connecting the valve body 1 is achieved, thereby improving the convenience of installing the valve body 1.

Claims

1. A plug-in pilot pressure reducing valve, comprising a valve body (1); Features: Both sides of the valve body (1) are provided with plug-in structures (2); The plug-in structure (2) comprises connecting pipes (3) arranged on both sides of the valve body (1); one end of the connecting pipe (3) close to the valve body (1) extends into the interior of the valve body (1) and is plugged into the valve body (1); both sides of the bottom of the valve body (1) are fixedly connected with connecting blocks (4); the surface of the connecting block (4) is movably connected with a shift fork (5) via a pin shaft; the front and back sides of the connecting pipe (3) are fixedly connected with a sliding rod (6); the side of the shift fork (5) away from the connecting block (4) is sleeved and extends to the outside of the connecting pipe (3); the shift fork (5) is sleeved on the surface of the sliding rod (6); the sliding rod (6) is slidably connected to the shift fork (5); and a transmission structure (7) is arranged at the bottom of the valve body (1); the transmission structure (7) is located on the inner side of the connecting block (4); and the transmission structure (7) can drive the shift fork (5) to swing.

2. A cartridge-type pilot pressure reducing valve according to claim 1, characterized in that: The transmission structure (7) comprises a screw (8) movably connected to the bottom of the valve body (1) via a bearing, the screw (8) being located on the inner side of the connecting block (4), the surface of the screw (8) being threadedly connected to a screw sleeve (9), a push rod (10) being fixedly connected to the side of the shift fork (5) close to the connecting block (4), the push rod (10) extending to the outer side of the screw sleeve (9) away from the shift fork (5), a pressure rod (11) being fixedly connected to both sides of the front and back sides of the screw sleeve (9), the pressure rod (11) extending to the bottom of the push rod (10) away from the screw sleeve (9), the outer surface of the pressure rod (11) contacting the surface of the push rod (10), and a rotating wheel (12) being fixedly connected to the side of the screw (8) away from the valve body (1), the rotating wheel (12) being located at the bottom of the screw sleeve (9).

3. A cartridge-type pilot pressure reducing valve according to claim 2, characterized in that: A support frame (13) is sleeved on the surface of the screw rod (8), and the support frame (13) is located between the screw sleeve (9) and the rotating wheel (12). The front side and the rear side of the support frame (13) respectively extend to the two sides of the screw rod (8) and are fixedly connected to the bottom of the valve body (1). The support frame (13) and the screw rod (8) are movably connected via a bearing.

4. A cartridge-type pilot pressure reducing valve according to claim 3, characterized in that: The front and back sides of the support frame (13) are both provided with limiting grooves (14); the front and back sides of the screw sleeve (9) are both fixedly connected to limiting blocks (15); a side of the limiting block (15) away from the screw sleeve (9) extends to the inside of the limiting groove (14); and the limiting groove (14) and the limiting block (15) are slidably connected.

5. A cartridge-type pilot pressure reducing valve according to claim 4, characterized in that: A sleeve (16) is sleeved on the surface of the pressure rod (11), and a side of the sleeve (16) away from the screw sleeve (9) extends to the bottom of the push rod (10), and an outer surface of the sleeve (16) contacts the bottom of the push rod (10).

6. A cartridge-type pilot pressure reducing valve according to claim 1, 2 or 5, characterized in that: An extension ring (17) is fixedly connected to the surface of the connecting tube (3), and the extension ring (17) is located outside the sliding rod (6).

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