Novel valve seat sealing device for special catalyst pump in cyclohexanol device
By widening the valve seat groove and using Stellite alloy material, combined with the inclined surface structure, the leakage problem caused by frequent impacts in the cyclohexanol unit of the valve seat sealing device was solved, realizing the long-term stable operation of the catalyst pump and effective protection of the materials.
Patent Information
- Application Number
- CN202520016604.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2035-01-03
AI Technical Summary
Existing valve seat sealing devices in cyclohexanol units are prone to leakage due to the narrow width of the valve seat groove, which leads to frequent impacts between heavy metals rhodium and ruthenium catalyst. This makes them unsuitable for long-term operation and results in resource waste due to the high cost of the catalyst.
A novel valve seat sealing device is designed, which widens the valve seat groove to 4-5mm and uses Stellite alloy material. It combines the inclined surface structure of the inner and outer annular surfaces and the bottom annular surface to reduce the catalyst impact frequency and improve the sealing performance.
This effectively prevents leakage of the sealing device, ensures long-term operation of the catalyst pump, extends its service life, and saves on the cost of using expensive catalysts.
Smart Images
Figure CN223524608U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to valve seat sealing technical field especially relates to a new valve seat sealing device for special catalyst pump in cyclohexanol device. BACKGROUND
[0002] Valve seat sealing device is one of core components and vulnerable components of one-way valve in catalyst pump, needs to check the running condition of one-way valve in catalyst pump in the daily production of cyclohexanol device to ensure the normal operation of cyclohexanol device. Due to the process characteristics of cyclohexanol device, it needs to run for a long time under high temperature and high pressure conditions, and due to the high hardness of the particles of heavy metal rhodium and ruthenium catalyst in cyclohexanol device, it can cause wear to the existing valve seat sealing device, which can cause leakage, and it needs to be repaired and replaced every 7-15 days, which can cause the existing valve seat sealing device to be unable to meet the long-time operation of the catalyst pump, and the price of heavy metal rhodium and ruthenium catalyst is relatively high, and if the catalyst pump cannot run for a long time, it will periodically waste a lot of manpower, material resources and financial resources.
[0003] Through research, it is found that the existing valve seat sealing device is prone to leakage mainly because the width of the valve seat attached groove on it is too narrow (1mm), which can cause the heavy metal rhodium and ruthenium catalyst in the cyclohexanol device to frequently hit the side and bottom of the valve seat attached groove, and thus the existing valve seat sealing device is prone to leakage.
[0004] Therefore, it is necessary to increase the width of the valve seat attached groove on the valve seat sealing device and design a new type of valve seat sealing device. INVENTION CONTENTS
[0005] According to the above technical problem, a new valve seat sealing device for special catalyst pump in cyclohexanol device is provided. The utility model can avoid the heavy metal rhodium and ruthenium catalyst in the cyclohexanol device from frequently hitting the side and bottom of the valve seat attached groove, so that the sealing device body is not prone to leakage, and thus the long-time operation of the catalyst pump is ensured. The technical means adopted by the utility model is as follows:
[0006] A new valve seat sealing device for special catalyst pump in cyclohexanol device, comprising a sealing device body, the sealing device body is a circular ring structure with its axis perpendicular to the horizontal plane, a valve seat attached groove is formed on the sealing device body along its circumferential direction, and the valve seat attached groove is a circular ring structure with its axis perpendicular to the horizontal plane.
[0007] Further, the valve seat attached groove comprises an inner side circular surface, an outer side circular surface and a bottom circular surface; the axis of the inner side circular surface is in line with the axis of the sealing device body, and the inner side circular surface is parallel to the axis; the axis of the outer side circular surface is in line with the axis of the sealing device body, and the outer side circular surface is parallel to the axis, and the difference between the radius of the outer side circular surface and the radius of the inner side circular surface is 4-5mm; the axis of the bottom circular surface is in line with the axis of the sealing device body, and the bottom circular surface is perpendicular to the axis, the inner diameter of the bottom circular surface is equal to the radius of the inner side circular surface, the outer diameter of the bottom circular surface is equal to the radius of the outer side circular surface, the inner ring of the bottom circular surface is connected with the bottom edge of the inner side circular surface, and the outer ring of the bottom circular surface is connected with the bottom edge of the outer side circular surface.
[0008] Further, the inner side circular surface and the bottom circular surface are provided with an inner side circular inclined surface, and the outer side circular surface and the bottom circular surface are provided with an outer side circular inclined surface.
[0009] Further, the material of the sealing device body is Stellite alloy.
[0010] The utility model has the following advantages:
[0011] 1. In the utility model, the difference between the radius of the outer side circular surface and the radius of the inner side circular surface (i.e. the width of the valve seat attached groove) is 4-5mm, compared with the 1mm wide valve seat attached groove in the prior art, the utility model can avoid the heavy metal rhodium and ruthenium catalyst in the cyclohexanol device from frequently impacting the side surface and the bottom surface of the valve seat attached groove, so that the sealing device body is not prone to leakage, and the long-time operation of the catalyst pump is ensured.
[0012] 2. In the utility model, the inner side circular inclined surface between the inner side circular surface and the bottom circular surface and the outer side circular inclined surface between the outer side circular surface and the bottom circular surface can further reduce the frequency of the heavy metal rhodium and ruthenium catalyst in the cyclohexanol device impacting the side surface and the bottom surface of the valve seat attached groove, so that the utility model is less prone to leakage, and the long-time operation of the catalyst pump is further ensured.
[0013] 3. In the utility model, the material of the sealing device body is Stellite alloy, which ensures the service life of the utility model and effectively protects the sealing gasket in the valve seat attached groove. DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0015] Figure 1 It is a top view of the novel valve seat sealing device for the special catalyst pump in the cyclohexanol device.
[0016] Figure 2 It is Figure 1 A-A sectional view.
[0017] The reference signs: 1-sealing device body; 2-valve seat attached groove; 201-outer side circular ring inclined surface; 202-bottom circular ring surface; 203-inner side circular ring inclined surface; 204-outer side circular ring surface; 205-inner side circular ring surface. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0019] Embodiment 1:
[0020] As Figure 1 and Figure 2 shown, a novel valve seat sealing device for a special catalyst pump in a cyclohexanol device, comprising a sealing device body 1; the sealing device body 1 is a circular ring structure with an axis perpendicular to the horizontal plane; the sealing device body 1 is provided with a valve seat attached groove 2 along the circumferential direction thereof, and the valve seat attached groove 2 is a circular ring structure with an axis perpendicular to the horizontal plane.
[0021] Specifically, in order to adapt to the existing catalyst pump, the outer diameter of the sealing device body 1 is consistent with the outer diameter of the existing valve seat sealing device, and the present embodiment only reforms the inside of the sealing device body 1.
[0022] In the embodiment, the valve seat attachment groove 2 comprises an inner circular surface 205, an outer circular surface 204 and a bottom circular surface 202; the axis of the inner circular surface 205 is in line with the axis of the sealing device body 1, and the inner circular surface 205 is parallel to the axis; the axis of the outer circular surface 204 is in line with the axis of the sealing device body 1, and the outer circular surface 204 is parallel to the axis, the difference between the radius of the outer circular surface 204 and the radius of the inner circular surface 205 is 4-5mm; the axis of the bottom circular surface 202 is in line with the axis of the sealing device body 1, and the bottom circular surface 202 is perpendicular to the axis, the inner diameter of the bottom circular surface 202 is equal to the radius of the inner circular surface 205, the outer diameter of the bottom circular surface 202 is equal to the radius of the outer circular surface 204, the inner ring of the bottom circular surface 202 is connected with the bottom edge of the inner circular surface 205, and the outer ring of the bottom circular surface 202 is connected with the bottom edge of the outer circular surface 204.
[0023] Specifically, the difference between the radius of the outer circular surface 204 and the radius of the inner circular surface 205 is 5mm, which is 5 times wider than the 1mm wide valve seat attachment groove 2 in the prior art, so that the embodiment can avoid the heavy metals rhodium and ruthenium catalysts in the cyclohexanol device from frequently impacting the side surface and the bottom surface of the valve seat attachment groove 2, so that the sealing device body 1 is not prone to leakage, thereby ensuring the long-time operation of the catalyst pump.
[0024] In the embodiment, the inner circular inclined surface 203 is arranged between the inner circular surface 205 and the bottom circular surface 202, and the outer circular inclined surface 201 is arranged between the outer circular surface 204 and the bottom circular surface 202, so that the embodiment can further reduce the frequency of the heavy metals rhodium and ruthenium catalysts in the cyclohexanol device impacting the side surface and the bottom surface of the valve seat attachment groove 2, so that the embodiment is less prone to leakage, and further ensures the long-time operation of the catalyst pump.
[0025] In the embodiment, the material of the sealing device body 1 is Stellite alloy.
[0026] Specifically, the material of the existing valve seat sealing device is mostly 304 stainless steel, while the material of the embodiment is Stellite alloy, compared with the existing valve seat sealing device, the service life of the embodiment is longer, and the sealing gasket in the valve seat attachment groove 2 can be more effectively protected.
[0027] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A new type of valve seat seal device for special catalyst pump in cyclohexanol plant, characterized by, The sealing device body (1) is a circular ring structure with the axis perpendicular to the horizontal plane. The sealing device body (1) is a circular ring structure with the axis perpendicular to the horizontal plane. The valve seat auxiliary groove (2) is a circular ring structure with the axis perpendicular to the horizontal plane.
2. A new type valve seat sealing device for special catalyst pump in cyclohexanol plant as claimed in claim 1, wherein The valve seat auxiliary groove (2) comprises an inner circular ring surface (205), an outer circular ring surface (204) and a bottom circular ring surface (202). The axis of the inner circular ring surface (205) is in the same line with the axis of the sealing device body (1), and the inner circular ring surface (205) is parallel to the axis. The axis of the outer circular ring surface (204) is in the same line with the axis of the sealing device body (1), and the outer circular ring surface (204) is parallel to the axis. The difference between the radius of the outer circular ring surface (204) and the radius of the inner circular ring surface (205) is 4-5mm.
3. A new type valve seat sealing device for special catalyst pump in cyclohexanol plant as claimed in claim 2, wherein The axis of the bottom circular ring surface (202) is in the same line with the axis of the sealing device body (1), and the bottom circular ring surface (202) is perpendicular to the axis.
4. A new type valve seat sealing device for special catalyst pump in cyclohexanol plant as claimed in claim 1, wherein, The inner diameter of the bottom circular ring surface (202) is equal to the radius of the inner circular ring surface (205), and the outer diameter of the bottom circular ring surface (202) is equal to the radius of the outer circular ring surface (204). The inner ring of the bottom circular ring surface (202) is connected with the bottom edge of the inner circular ring surface (205), and the outer ring of the bottom circular ring surface (202) is connected with the bottom edge of the outer circular ring surface (204). The inner circular ring inclined surface (203) is arranged between the inner circular ring surface (205) and the bottom circular ring surface (202), and the outer circular ring inclined surface (201) is arranged between the outer circular ring surface (204) and the bottom circular ring surface (202). The material of the sealing device body (1) is Stellite alloy.