Valve with replaceable valve seat

Abstract

The valve with the replaceable valve seat comprises a valve body and a valve cover, the valve body is connected with the valve cover through a bolt, a valve element is arranged in the valve cover, a hand lever is arranged at the bottom of the valve element, the valve seat is connected in the valve body corresponding to the bottom of the valve element in a threaded mode, and the valve element is attached to the valve seat. Two sets of positioning grooves are symmetrically formed in the surface of the bottom end of the valve seat, and inserting rods are inserted into the positioning grooves. The valve seat in threaded connection is arranged in the valve body, the electromagnet drives the insertion rod to be connected with the positioning groove, the threaded rod rotates in the valve body, the insertion rod drives the valve seat to rotate in the valve body in a threaded mode, the insertion rod drives the valve seat to slide out of the valve body, and the threaded rod is reversely rotated, so that the insertion rod drives the valve seat to rotate into the valve body. The valve seat is arranged in the valve body and is in threaded connection with the valve body, so that workers can replace the valve seat conveniently, meanwhile, the replacement difficulty of the valve seat is reduced, and the efficiency of the workers is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve with a replaceable valve seat. Background Art

[0002] The valve is a control component in the fluid delivery system, with functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. It is a pressure component used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. During long-term use, the valve seat may cause pitting, defects, indentations and depressions of the valve seat component due to the scouring, wear, accumulation, extrusion and corrosion of the fluid, which in turn affects the sealing performance of the valve. Therefore, the staff needs to replace the valve seat regularly. The existing valve with replaceable valve seat can basically meet the daily use needs, but there are still some shortcomings that need to be improved.

[0003] The existing valve seat and valve body are designed as an integrated whole. Once the valve seat is damaged or the seal is not tight, the entire valve often needs to be replaced, which not only increases the maintenance cost but also affects the production efficiency. Therefore, we propose a valve with a replaceable valve seat to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a valve with a replaceable valve seat to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve with a replaceable valve seat, comprising a valve body and a valve cover, the valve body being connected to the valve cover by bolts, a valve core being arranged in the valve cover, a hand lever being arranged at the bottom of the valve core, a valve seat being threadedly connected in the valve body corresponding to the bottom of the valve core, the valve core being fitted with the valve seat, two groups of positioning grooves being symmetrically provided on the bottom surface of the valve seat, plug rods being inserted in the positioning grooves, an electromagnet being provided on the surface of the plug rod on one side facing the positioning groove, a threaded rod being provided on the bottom surface of the plug rod, the threaded rod being threadably rotated in the valve body, and a sealing ring being provided between the valve body and the threaded rod.

[0006] As a further preferred embodiment of the present technical solution, two groups of limit seats are symmetrically arranged on the two side surfaces of the valve body, and slides are slidably connected to the limit seats. A positioning rod is fixed in the middle of the slide. Springs are wound around the positioning rods on the surfaces of the limit seats, and slots are provided on the outer wall of the valve cover corresponding to the inner end surface of the positioning rod.

[0007] As a further preferred embodiment of the present technical solution, the insertion rod is designed to be cylindrical, the electromagnet is provided with a through hole matching the insertion rod, and the insertion rod is adapted to the positioning groove.

[0008] As a further preferred embodiment of the present technical solution, the bottom of the threaded rod is designed to be pentagonal, and the outer wall of the threaded rod is provided with anti-slip patterns.

[0009] As a further preferred embodiment of the present technical solution, a side surface of the limit seat facing the valve cover is arranged to be in an arc shape having the same arc as the outer wall of the valve cover, and the outer wall of the limit seat is in contact with the outer wall of the valve cover.

[0010] As a further preferred embodiment of the present technical solution, the outer end surface of the positioning rod is provided with a handle, and the handle is designed in a U-shaped shape.

[0011] As a further preferred embodiment of the present technical solution, the inner wall of the spring is fitted with the outer wall of the positioning rod, and both ends of the spring are welded to the inner wall of the limiting seat and the surface of the slide plate.

[0012] The utility model provides a valve with a replaceable valve seat, which has the following beneficial effects:

[0013] 1. The utility model sets a threaded valve seat in the valve body, and then drives the plug rod to connect with the positioning groove through the electromagnet, so that the threaded rod rotates in the valve body, and drives the valve seat to rotate in the valve body through the plug rod, so that the plug rod drives the valve seat to slide out of the valve body, and then drives the threaded rod in the opposite direction to drive the valve seat into the valve body and is threadedly connected with the valve body, so that it is convenient for the staff to replace the valve seat, while reducing the difficulty of replacing the valve seat and further improving the efficiency of the staff.

[0014] 2. The utility model sets a sliding positioning rod at the connection between the valve body and the valve cover, so that the positioning rod slides into the slot under the push of the spring restoring force, thereby achieving the purpose of limiting the valve cover, so that the staff can install the valve cover and the valve body by using bolts to prevent the threaded holes between the valve body and the valve cover from being misaligned, which may cause installation errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0017] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0018] Figure 4 For the utility model Figure 3 A schematic diagram of the enlarged structure at point A;

[0019] Figure 5 For the utility model Figure 3 Schematic diagram of the enlarged structure at B.

[0020] In the figure: 1. valve body; 2. valve cover; 3. valve core; 4. hand lever; 5. valve seat; 6. positioning groove; 7. plug rod; 8. electromagnet; 9. threaded rod; 10. sealing ring; 11. limit seat; 12. slide plate; 13. positioning rod; 14. spring; 15. handle; 16. slot. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model provides a technical solution: Figures 1 to 5 As shown, in this embodiment, a valve with a replaceable valve seat includes a valve body 1 and a valve cover 2, the valve body 1 is connected to the valve cover 2 by bolts, a valve core 3 is arranged in the valve cover 2, a hand lever 4 is arranged at the bottom of the valve core 3, a valve seat 5 is connected to the inner thread of the valve body 1 corresponding to the bottom of the valve core 3, the valve core 3 fits the valve seat 5, two groups of positioning grooves 6 are symmetrically opened on the bottom end surface of the valve seat 5, and plug rods 7 are inserted in the positioning grooves 6, an electromagnet 8 is arranged on the side surface of the plug rod 7 facing the positioning groove 6, a threaded rod 9 is arranged on the bottom end surface of the plug rod 7, the threaded rod 9 rotates on the inner thread of the valve body 1, and a sealing ring 10 is arranged between the valve body 1 and the threaded rod 9.

[0023] By setting a threaded valve seat 5 in the valve body 1, and then driving the plug rod 7 to connect with the positioning groove 6 through the electromagnet 8, the threaded rod 9 is rotated in the valve body 1, and the valve seat 5 is driven to rotate in the valve body 1 through the plug rod 7, so that the plug rod 7 drives the valve seat 5 to slide out of the valve body 1, and then by rotating the threaded rod 9 in the opposite direction, the plug rod 7 drives the valve seat 5 to rotate into the valve body 1 and is threadedly connected with the valve body 1, so that it is convenient for the staff to replace the valve seat 5, while reducing the difficulty of replacing the valve seat 5, and further improving the efficiency of the staff.

[0024] In other embodiments, two sets of limit seats 11 are symmetrically arranged on both sides of the valve body 1, and slide plates 12 are slidably connected in the limit seats 11. Positioning rods 13 are fixed in the middle of the slide plates 12. Springs 14 are wound around the positioning rods 13 on the surfaces of the limit seats 11, and slots 16 are opened on the outer wall of the valve cover 2 corresponding to the inner end surfaces of the positioning rods 13.

[0025] By setting a sliding positioning rod 13 at the connection between the valve body 1 and the valve cover 2, the positioning rod 13 slides into the slot 16 under the push of the restoring force of the spring 14, thereby achieving the purpose of limiting the valve cover 2, so that the staff can install the valve cover 2 and the valve body 1 by using bolts to prevent the threaded holes between the valve body 1 and the valve cover 2 from being misaligned, which may cause installation errors.

[0026] In other embodiments, the plug rod 7 is designed to be cylindrical, the electromagnet 8 is provided with a through hole matching the plug rod 7, and the plug rod 7 and the positioning groove 6 are both adapted;

[0027] This design allows the rod 7 to fit fully with the electromagnet 8, thereby ensuring that the forces on both sides of the valve seat 5 are even, preventing the valve seat 5 from tilting under the push of the rod 7, thereby preventing the valve seat 5 from being unable to be screwed into the valve body 1.

[0028] In other embodiments, the bottom of the threaded rod 9 is designed in a pentagonal shape, and the outer wall of the threaded rod 9 is provided with anti-slip textures;

[0029] This design can increase the friction between the threaded rod 9 and the worker's hand, preventing the hand from slipping when the threaded rod 9 is turned, resulting in repeated operation of the threaded rod 9 and inconvenience in using the threaded rod 9.

[0030] In other embodiments, a surface of the limit seat 11 on one side facing the valve cover 2 is configured to be in an arc shape equal to the arc of the outer wall of the valve cover 2, and the outer wall of the limit seat 11 fits with the outer wall of the valve cover 2;

[0031] With this design, when the valve cover 2 is installed with the valve body 1, the valve cover 2 is placed on the valve body 1 so that the limit seat 11 can position the valve cover 2, thereby preventing the valve cover 2 from shaking on the valve body 1 and falling to the ground and being damaged.

[0032] In other embodiments, the outer end surface of the positioning rod 13 is provided with a handle 15, and the handle 15 is designed in a square shape;

[0033] Through this design, it is convenient for the staff to operate the limit seat 11 by pulling the handle 15, thereby preventing.

[0034] In other embodiments, the inner wall of the spring 14 fits the outer wall of the positioning rod 13, and both ends of the spring 14 are welded to the inner wall of the limiting seat 11 and the surface of the slide plate 12;

[0035] This design can prevent the spring 14 from being easily displaced on the positioning rod 13, which would cause the thrust output by the spring 14 to both sides of the slide plate 12 to be uneven, thereby causing the slide plate 12 to get stuck when sliding in the limit seat 11.

[0036] The utility model provides a valve with a replaceable valve seat, and the specific working principle is as follows:

[0037] When in use, first put the positioning groove 6 on the plug rod 7, and start the electromagnet 8 to make the electromagnet 8 fit with the valve seat 5, and then rotate the threaded rod 9 in the valve body 1, so that the threaded rod 9 synchronously drives the plug rod 7 to rotate, and the plug rod 7 drives the valve seat 5 to screw with the thread on the valve body 1, so that the valve seat 5 is installed in the valve body 1. When the valve seat 5 needs to be disassembled, the threaded rod 9 is rotated in the opposite direction, so that the threaded rod 9 drives the valve seat 5 to rotate out of the valve body 1 through the plug rod 7 and rise to the top outlet of the valve body 1, thereby achieving the purpose of replacing the valve seat 5, and then by loosening the spring 14, the restoring force generated by the spring 14 being squeezed by the slide plate 12 is used to push the slide plate 12 to reset and slide in the limit seat 11, and the slide plate 12 drives the positioning rod 13 to slide into the slot 16, thereby achieving the purpose of limiting the valve cover 2.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve with a replaceable valve seat, comprising a valve body (1) and a valve cover (2), wherein the valve body (1) is connected to the valve cover (2) by bolts, and characterized in that: The valve cover (2) is provided with a valve core (3), the bottom of the valve core (3) is provided with a hand lever (4), the bottom of the valve core (3) is connected to a valve seat (5) through an internal thread of the valve body (1) corresponding to the valve core (3), the valve core (3) and the valve seat (5) are fitted together, the bottom surface of the valve seat (5) is symmetrically provided with two groups of positioning grooves (6), each of the positioning grooves (6) is plugged with a plug rod (7), the surface of the plug rod (7) facing the positioning groove (6) is provided with an electromagnet (8), the bottom surface of the plug rod (7) is provided with a threaded rod (9), the threaded rod (9) is rotated on the internal thread of the valve body (1), and a sealing ring (10) is provided between the valve body (1) and the threaded rod (9).

2. A valve with a replaceable valve seat according to claim 1, characterized in that: Two sets of limit seats (11) are symmetrically arranged on the two side surfaces of the valve body (1), and a slide plate (12) is slidably connected inside each of the limit seats (11). A positioning rod (13) is fixed in the middle of each of the slide plates (12). A spring (14) is wound around each of the positioning rods (13) on the surface of the limit seats (11), and a slot (16) is provided on the outer wall of the valve cover (2) corresponding to the inner end surface of the positioning rod (13).

3. A valve with a replaceable valve seat according to claim 1, characterized in that: The insertion rod (7) is cylindrical in design, the electromagnet (8) is provided with a through hole matching the insertion rod (7), and the insertion rod (7) and the positioning groove (6) are both compatible.

4. A valve with a replaceable valve seat according to claim 1, characterized in that: The bottom of the threaded rod (9) is designed to be pentagonal, and the outer wall of the threaded rod (9) is provided with anti-slip patterns.

5. A valve with a replaceable valve seat according to claim 2, characterized in that: A surface of the limit seat (11) on one side facing the valve cover (2) is arranged in an arc shape having the same arc as the outer wall of the valve cover (2), and the outer wall of the limit seat (11) is in contact with the outer wall of the valve cover (2).

6. A valve with a replaceable valve seat according to claim 2, characterized in that: The outer end surface of the positioning rod (13) is provided with a handle (15), and the handle (15) is designed in a U-shaped shape.

7. A valve with a replaceable valve seat according to claim 2, characterized in that: The inner wall of the spring (14) is in contact with the outer wall of the positioning rod (13), and both ends of the spring (14) are welded to the inner wall of the limiting seat (11) and the surface of the slide plate (12).

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