Novel power seal and double-end-face seal combined high-temperature-resistant chemical pump
By introducing a secondary impeller structure with a primary impeller and a double-end mechanical seal into the chemical pump, combined with a transport sleeve design, the leakage and volatile media problems caused by the single seal in the chemical pump are solved, achieving stable operation and protective connection of the chemical pump.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-24
- Publication Date
- 2026-04-10
AI Technical Summary
Existing high-temperature chemical pumps have limited sealing protection, making it difficult to comprehensively and reliably cope with complex and harsh working conditions. This results in high leakage rates and high volatility of volatile media, affecting long-term stable operation.
A secondary impeller structure with a primary impeller and a secondary impeller was designed to achieve internal balance using the leakage liquid pressure and to reduce the probability of leakage through a double-end mechanical seal. At the same time, a transport sleeve was set to protect the pump shaft structure and prevent collision damage during transportation.
It effectively reduces the leakage rate of chemical pumps and the volatilization value of volatile media, ensuring the long-term stable operation of chemical pumps and the reliability of connections.
Smart Images
Figure CN224107445U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to chemical industry pump technical field especially relates to a novel power seal and double end surface sealing combination high temperature resistant chemical industry pump. BACKGROUND
[0002] Chemical industry pump is the pump equipment specially designed for conveying various chemical industry medium, plays a key role in chemical production, has the characteristics such as corrosion resistance, high temperature resistance and wear resistance, can cope with complex and harsh medium environment such as strong acid, strong alkali and organic solvent, and the chemical industry pump is various, and the centrifugal pump, diaphragm pump and screw pump are common.
[0003] In the operation process of the prior art high temperature resistant chemical industry pump, the single sealing protection means is generally used, the chemical industry pump usually only adopts mechanical seal to achieve the sealing requirement between the pump cover and the pump body, however, the working condition of the high temperature resistant chemical industry pump is complex and harsh, and only relying on single mechanical seal can not comprehensively and reliably cope with various potential problems and ensure long-term stable operation. SUMMARY
[0004] The utility model discloses an embodiment relates to a novel power seal and double end surface sealing combination high temperature resistant chemical industry pump, which is provided with two secondary impellers of two-stage impeller and primary impeller, the working impeller rotates coaxially with the two-stage impeller and the primary impeller for sealing, the liquid leaked from the working impeller flows to the position of the secondary impeller, and the pressure generated by the secondary impeller and the pressure of the leaked liquid are balanced at the top end of the secondary impeller and the inner end surface of the double end surface mechanical seal, so that the leaked liquid is used for sealing, and some volatile medium oil gas generated during operation is resealed by the double end surface mechanical seal, the VOCs volatilization value of the volatile medium is reduced, and the internal double sealing structure of the chemical industry pump is formed by cooperation, the double sealing structure can effectively reduce the leakage probability and ensure long-term stable operation of the chemical industry pump.
[0005] The utility model discloses a first aspect provides a kind of novel power sealing and double-end face sealing combined high-temperature resistant chemical pump, specifically includes: pump body structure, the rear end of the pump body structure is fixedly installed with pump cover structure by thread;The left end of the pump body structure is provided with water inlet structure;The top of the pump body structure is fixed with water outlet structure;The right end of the pump cover structure is fixedly connected with sealing end cover;The inside of the sealing end cover is fixedly installed with mounting bearing;Pump shaft structure is rotatably installed in the inside of the mounting bearing;The front end of the pump shaft structure is fixedly installed with working impeller;Second-stage impeller is fixedly installed on the pump shaft structure;Primary impeller is also fixedly installed on the pump shaft structure;Double-end face mechanical seal piece is fixedly installed in the inside of the sealing end cover.
[0006] Further, the working impeller is located inside the pump body structure;The primary impeller is located at the right side of the second-stage impeller.
[0007] Further, the second-stage impeller and the primary impeller are both located inside the pump cover structure.
[0008] Further, the pump shaft structure is rotatably installed in the inside of the double-end face mechanical seal piece.
[0009] Further, the double-end face mechanical seal piece is located at the inside connecting position of the pump cover structure and the sealing end cover.
[0010] Further, the right end of the pump shaft structure penetrates the right end of the sealing end cover;The right end of the sealing end cover is fixedly installed with transport sheath by bolt.
[0011] Further, the right end of the pump shaft structure is located inside the transport sheath.
[0012] The utility model provides a kind of novel power sealing and double-end face sealing combined high-temperature resistant chemical pump, with following beneficial effects:
[0013] (One) this chemical pump designs two secondary impellers of second-stage impeller and primary impeller, working impeller and the secondary impeller of bearing sealing function primary impeller coaxially rotate, when working impeller appears liquid leakage, leaked liquid will flow to secondary impeller, at this time, the pressure generated by secondary impeller and the pressure of leakage liquid, will be balanced at the top end of secondary impeller and the inner end surface of double-end face mechanical seal piece, and then achieve sealing effect using leakage liquid, while, for the volatile medium oil gas generated during operation, double-end face mechanical seal piece will be sealed twice, effectively reduce the VOCs volatility of volatile medium, this design makes double sealing structure in chemical pump, greatly reduce the leakage probability, ensure that chemical pump long-term stable operation.
[0014] (2) The chemical pump is also provided with a transportation sheath, which can properly protect the pump shaft structure which has not been connected with the motor structure, so as to avoid that the pump shaft structure protruding from the sealing end cover and exposed outside is collided and damaged with the outside in the transportation process, and unnecessary troubles are caused to the subsequent connection work with the motor structure. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced as follows.
[0016] The drawings described in the following description only relate to some embodiments of the present application, and are not a limitation of the present application.
[0017] In the drawings:
[0018] Figure 1 A schematic diagram of the overall structure of the present application is shown;
[0019] Figure 2 A half-section schematic diagram of the pump cover structure and the sealing end cover structure of the present application is shown;
[0020] Figure 3 Another view structure schematic diagram of the present application is shown; Figure 1
[0021] Figure 4 A half-section structure schematic diagram of the present application is shown;
[0022] Figure 5 A schematic diagram of the pump shaft structure and the working impeller structure of the present application is shown;
[0023] LIST OF REFERENCE NUMERALS
[0024] 1, pump body structure; 2, pump cover structure; 3, sealing end cover; 4, mounting bearing; 5, pump shaft structure; 6, working impeller; 7, two-stage impeller; 8, one-stage impeller; 9, double-end mechanical seal; 10, transportation sheath. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be clearly and completely described below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of 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.
[0026] Please refer to Figures 1 to 5 : Embodiment one:
[0027] The utility model provides a novel power sealing and double end face sealing combination high temperature resistant chemical pump, include: pump body structure 1, the rear end of pump body structure 1 is fixedly installed with pump cover structure 2 through screw thread, the left end of pump body structure 1 is provided with water inlet structure, the top of pump body structure 1 is fixed with water outlet structure, the right end of pump cover structure 2 is fixedly connected with sealing end cover 3, the inside fixed mounting of sealing end cover 3 has installation bearing 4, the inside rotation of installation bearing 4 is installed with pump shaft structure 5, the front end fixed mounting of pump shaft structure 5 has working impeller 6, the fixed mounting of pump shaft structure 5 has secondary impeller 7, the fixed mounting of pump shaft structure 5 still has primary impeller 8, the inside fixed mounting of sealing end cover 3 has double end face mechanical seal 9, through the water inlet structure of pump body structure 1 water, the motor structure is rotated with pump shaft structure 5 in the water inlet process, makes pump shaft structure 5 with working impeller 6, secondary impeller 7 and primary impeller 8 coaxial rotation, the liquid leaked by working impeller 6 in the rotation process flows to the vice impeller position composed by secondary impeller 7 and primary impeller 8, the pressure generated by vice impeller and the pressure of leakage liquid reach balance at the top of vice impeller and the inner end surface of double end face mechanical seal 9 at this time, thereby using leakage liquid plays the sealing effect, and for some volatile medium oil gas generated in the operation process, through double end face mechanical seal 9 carries out again sealing, reduces the VOCs volatile value of volatile medium.
[0028] Example two, on the basis of example one, working impeller 6 is located in the inside of pump body structure 1, primary impeller 8 is located at the right side of secondary impeller 7, secondary impeller 7 and primary impeller 8 are all located in the inside of pump cover structure 2, pump shaft structure 5 is installed in the inside of double end face mechanical seal 9 and rotates, sets up two vice impellers of secondary impeller 7 and primary impeller 8, working impeller 6 and secondary impeller 7, primary impeller 8 that seal rotate coaxially, after the liquid leaked by working impeller 6 flows to vice impeller position, the pressure generated by vice impeller and the pressure of leakage liquid reach balance at the top of vice impeller and the inner end surface of double end face mechanical seal 9, thereby using leakage liquid plays the sealing effect, simultaneously, for some volatile medium oil gas generated in the operation process, through double end face mechanical seal 9 carries out again sealing, reduces the VOCs volatile value of volatile medium, so cooperation makes the inside of chemical pump has double sealing structure, utilizes double sealing structure and can effectively reduce the leakage probability, guarantees the long-term stable operation of chemical pump.
[0029] Embodiment three, on the basis of embodiment two, the double mechanical seal 9 is located at the internal connection position of the pump cover structure 2 and the sealing end cover 3; the right end of the pump shaft structure 5 penetrates through the right end of the sealing end cover 3; the right end of the sealing end cover 3 is fixedly installed with the transportation sheath 10 through bolts; the right end of the pump shaft structure 5 is located in the inside of the transportation sheath 10, and the pump shaft structure 5 which has not been connected with the motor structure is protected by the transportation sheath 10, so that the pump shaft structure 5 is prevented from being damaged due to collision with the outside during transportation, and unnecessary troubles are avoided for the connection work with the motor structure in the later period.
[0030] Working principle: in the running process of the chemical pump, liquid flows into the pump body structure 1 in an orderly manner through the water inlet structure, during the water inlet period, the motor structure starts and drives the pump shaft structure 5 to start rotating, the pump shaft structure 5 synchronously drives the working impeller 6, the secondary impeller 7 and the primary impeller 8 to rotate coaxially, although the working impeller 6 has high conveying capacity, a small amount of liquid will still leak out, these leaked liquid flows to the secondary impeller position composed of the secondary impeller 7 and the primary impeller 8, at this time, the secondary impeller balances the pressure of the leaked liquid at the top end of the secondary impeller and the inner end face of the double mechanical seal 9 by the pressure generated by the rotation, and then the leaked liquid realizes excellent sealing effect, moreover, the double mechanical seal 9 plays a key role in resealing the volatile medium oil gas generated in the running process of the chemical pump, effectively reduces the VOCs volatile value of the volatile medium, and ensures the efficiency and environmental protection of the chemical pump running.
[0031] In this paper, the following points need attention:
[0032] 1. The embodiment of the utility model only relates to the structure involved in the embodiment of the utility model, and other structures can refer to the general design.
[0033] 2. In the case of no conflict, the embodiments of the utility model and the features in the embodiments can be combined to obtain new embodiments.
[0034] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.
Claims
1. A new type of high temperature resistant chemical pump with a combination of dynamic seal and double face seal, comprising: The utility model provides a pump body structure (1), the left end of pump body structure (1) is provided with water inlet structure, the top end of pump body structure (1) is fixed with water outlet structure, characterized by, the rear end of pump body structure (1) is fixedly installed with pump cover structure (2) through screw thread, the right end of pump cover structure (2) is fixedly connected with sealing end cover (3), the inside of sealing end cover (3) is fixedly installed with mounting bearing (4), the inside of mounting bearing (4) is rotatably installed with pump shaft structure (5), the front end of pump shaft structure (5) is fixedly installed with working impeller (6), pump shaft structure (5) is fixedly installed with secondary impeller (7), pump shaft structure (5) is still fixedly installed with primary impeller (8), the inside of sealing end cover (3) is fixedly installed with double end face mechanical seal (9).
2. A new type of high temperature resistant chemical pump with power seal and double end face seal combination according to claim 1, characterized in that, The working impeller (6) is located in the inside of the pump body structure (1), and the primary impeller (8) is located at the right side of the secondary impeller (7).
3. A new type of high temperature resistant chemical pump with power seal and double end face seal combination according to claim 1, characterized in that, The secondary impeller (7) and the primary impeller (8) are located in the inside of the pump cover structure (2).
4. A new type of high temperature resistant chemical pump with power seal and double end face seal combination according to claim 1, characterized in that, The pump shaft structure (5) is rotatably installed in the inside of the double end face mechanical seal (9).
5. A new type of high temperature resistant chemical pump with power seal and double end face seal combination as claimed in claim 1, wherein The double end face mechanical seal (9) is located at the inside connecting position of the pump cover structure (2) and the sealing end cover (3).
6. A new type of high temperature resistant chemical pump with power seal and double end face seal combination as claimed in claim 1, wherein, The right end of the pump shaft structure (5) penetrates the right end of the sealing end cover (3), and the right end of the sealing end cover (3) is fixedly installed with the transport sheath (10) through bolts.
7. A new type of high temperature resistant chemical pump with power seal and double end face seal combination as claimed in claim 6, wherein The right end of the pump shaft structure (5) is located in the inside of the transport sheath (10).