Novel feeding pump

Abstract

The utility model discloses a novel feeding pump in the technical field of feeding pumps, which comprises a feeding mechanism, the feeding mechanism comprises a first feeding assembly and a second feeding assembly which are used in spraying processes of polyurea or polyurethane and other related industries, and the second feeding assembly is arranged inside the first feeding assembly. A third feeding assembly is further arranged in the second feeding assembly, a telescopic connecting sleeve is additionally arranged among the pump rod, the connecting rod and the pump shell, in this way, when the pump rod works, liquid leakage is prevented without the need of sealing pieces which slide relatively, and the working efficiency is improved. Due to the fact that a closed space is formed by the connecting sleeve and the relatively static sealing piece, relative sliding and contact between the pump rod and the sealing piece are avoided, and the design means that an independent closed space is formed in the pump body except an inlet and an outlet of the pump. The possibility of friction between the pump rod and the sealing piece due to liquid crystallization and hardening is reduced, and the risk that the sealing piece is scratched by the pump rod is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of feed pumps, in particular to a novel feed pump. Background Art

[0002] In the spraying process of polyurea or polyurethane and other related industries, the core components of the equipment include booster pumps, spray guns and feed pumps, etc. During long-term operation, these equipment may encounter some common problems such as material crystallization, hardening and solidification due to the physical and chemical properties of the materials. These phenomena eventually lead to the formation of solidified lumps of materials inside the equipment. When these lumps adhere to the pump rod, they will damage the seals during the reciprocating motion of the pump rod, causing leakage problems. This leakage not only affects production efficiency, but also requires frequent replacement of seals, increasing maintenance costs and downtime, and posing a challenge to the continuity and stability of the production process.

[0003] Based on this, we propose a new type of feed pump to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] Therefore, the purpose of the utility model is to provide a new type of feed pump, which can solve the problem that the solidified lumps attached to the pump rod due to the crystallization, hardening and solidification of the material during the long-term operation of the polyurea or polyurethane spraying equipment, and then damage the seal during the reciprocating motion of the pump rod to cause leakage. In order to solve the above technical problems, the utility model provides a new type of feed pump, which adopts the following technical scheme: including a feed mechanism, the feed mechanism includes a first feed component and a second feed component used in the spraying process of polyurea or polyurethane and other related industries, the second feed component is arranged inside the first feed component, and the second feed component is also arranged inside the third feed component;

[0006] The first feeding assembly includes a pump casing, and a discharge pipe is connected to the bottom of one end of the pump casing; the second feeding assembly is composed of multiple groups of telescopic sleeves spliced ​​end to end, and connecting flanges are installed at both ends of the multiple groups of telescopic sleeves.

[0007] By adopting the above technical solution, the new feed pump proposed in this patent adds a retractable connecting sleeve between the pump rod, the connecting rod and the pump casing. This design cleverly separates the contact between the liquid in the pump body and the pump rod. In this way, the pump rod no longer needs to use relatively sliding seals to prevent liquid leakage during operation, because the connecting sleeve and the relatively static seal have formed a closed space, thereby avoiding relative sliding and contact between the pump rod and the seal. Such a design means that in addition to the inlet and outlet of the pump, an independent enclosed space is formed inside the pump body, reducing the possibility of friction between the pump rod and the seal due to crystallization and hardening of the liquid, and significantly reducing the risk of the pump rod scratching the seal.

[0008] Optionally, a bottom valve for controlling the opening or closing of a feed port is provided at one end of the pump housing away from the discharge pipe, and a fixed end sleeve is also provided at one end of the pump housing close to the discharge pipe.

[0009] By adopting the above technical solution, this solution manages the liquid flow direction by installing a bottom valve at one end of the pump casing, so that the pump automatically opens and closes the feed port when working. This control mechanism is crucial to maintaining the continuity and stability of liquid delivery, ensuring that the feeding system can be flexibly adjusted according to the working status.

[0010] Optionally, one end of the second feeding assembly is connected to a first connecting seat, and an end of the second feeding assembly away from the first connecting seat is also provided with a first sealing member, and the connecting sleeves are sealedly connected to each other.

[0011] By adopting the above technical solution, this solution optimizes the connection stability, sealing performance and maintenance convenience of the feeding pump by adding the first connecting seat and the first sealing member, which plays a key role in improving the practicality and reliability of the feeding system.

[0012] Optionally, the third feeding assembly includes a connecting rod, a pump rod is installed at one end of the connecting rod, a second sealing member is provided at one end of the connecting rod away from the pump rod, and a piston is also connected to one end of the connecting rod close to the second sealing member.

[0013] By adopting the above technical scheme, this scheme optimizes the sealing, feeding accuracy and working efficiency of the feeding pump through the structural design of the third feeding component, while also reducing the difficulty of maintenance, providing a strong guarantee for the stable, reliable and long-term operation of the feeding system.

[0014] Optionally, the piston includes a piston body, a second connecting seat is provided on one side of the piston body, the second connecting seat matches the first connecting seat structure, the second connecting seat and the first connecting seat are fixedly connected, and flow guide holes are respectively opened on both sides of the inner wall of the second connecting seat.

[0015] By adopting the above technical scheme, this scheme plays a core role in this patent through the design and function of the adjusting plug body inside the piston and its second connecting seat. They not only enhance the structural stability and sealing of the feed pump, but also improve the working efficiency and adjustment flexibility of the feed pump.

[0016] Optionally, the piston body is similar to the bottom valve in structure, and the piston body comprises an adjusting shell, a flow guiding cavity is provided inside one side of the adjusting shell, and a valve ball is also provided inside the flow guiding cavity.

[0017] By adopting the above technical solution, the piston body in this solution is similar to the bottom valve in structure, both of which are composed of an adjusting shell, a guide cavity and a valve ball. It can respond to changes in fluid pressure and close or partially limit the flow when necessary, thereby preventing excessive feeding or preventing material leakage when the system is shut down, thereby ensuring the normal operation of the feeding system.

[0018] Optionally, the first connecting seat and one end of the telescopic sleeve are sealed and welded, and the first connecting seat and the second sealing member are statically sealed and assembled.

[0019] By adopting the above technical scheme, this scheme adopts the structural design of the static sealing assembly between the first connecting seat and the second sealing member, which is both tight and leaves a certain space to accommodate the slight movement between the components. This can reduce the wear caused by friction during use and extend the service life of the seal, thereby ensuring the long-term and stable operation of the feeding system.

[0020] Optionally, the first sealing member and the connecting rod are sleeve-connected, and a relatively large gap is left between the first sealing member and the connecting rod.

[0021] By adopting the above technical solution, the present solution improves the movement flexibility of the feeding system, reduces wear, and simplifies maintenance and installation work by means of a sleeve connection between the first seal and the connecting rod, and a large gap is left between the first seal and the connecting rod.

[0022] To summarize, the utility model includes at least one of the following beneficial effects: the new feed pump proposed in this patent cleverly separates the contact between the liquid in the pump body and the pump rod by adding a retractable telescopic sleeve between the pump rod, the connecting rod and the pump casing. In this way, the pump rod no longer needs to use relatively sliding seals to prevent liquid leakage during operation, because the telescopic sleeve and the relatively static seal have formed a closed space, thereby avoiding relative sliding and contact between the pump rod and the seal. Such a design means that in addition to the inlet and outlet of the pump, an independent enclosed space is formed inside the pump body, reducing the possibility of the pump rod rubbing against the seal due to liquid crystallization and hardening, and significantly reducing the risk of the pump rod scratching the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the first feeding component of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the second feeding assembly of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the third feeding assembly of the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the regulating plug body of the utility model.

[0029] Explanation of the reference numerals: 100, feeding mechanism; 101, first feeding assembly; 101a, pump housing; 101b, discharge pipe; 101c, bottom valve; 101d, fixed end sleeve; 102, second feeding assembly; 102a, telescopic sleeve; 102b, connecting flange; 102c, first connecting seat; 102d, first sealing member; 103, third feeding assembly; 103a, connecting rod; 103b, pump rod; 103c, second sealing member; 103d, piston; 103d-1, piston body; 103d-1a, adjusting housing; 103d-1b, diversion cavity; 103d-1c, valve ball; 103d-2, second connecting seat; 103d-3, diversion hole. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-5 The utility model is described in further detail.

[0031] Embodiment 1, refer to Figure 1-3 The utility model discloses a new type of feed pump.

[0032] The feeding mechanism 100 includes a first feeding component 101 and a second feeding component 102 used in a spraying process of a polyurea or polyurethane related industry, wherein the second feeding component 102 is arranged inside the first feeding component 101, and a third feeding component 103 is also arranged inside the second feeding component 102;

[0033] The first feeding assembly 101 includes a pump housing 101a, and a discharge pipe 101b is connected to the bottom of one end of the pump housing 101a;

[0034] The second feeding assembly 102 is composed of multiple sets of telescopic sleeves 102a spliced ​​end to end, and connecting flanges 102b are installed at both ends of the multiple sets of telescopic sleeves 102a.

[0035] A bottom valve 101c for controlling the opening or closing of the feed port is provided at one end of the pump housing 101a away from the discharge pipe 101b, and a fixed end sleeve 101d is also provided at one end of the pump housing 101a close to the discharge pipe 101b. By installing the bottom valve 101c at one end of the pump housing 101a, the pump automatically opens and closes the feed port when working, thereby managing the flow direction of the liquid. This control mechanism is crucial to maintaining the continuity and stability of liquid delivery, ensuring that the feeding system can be flexibly adjusted according to the working status.

[0036] Example 2, refer to Figure 3-5 In this embodiment, in order to solve the problem that the solidified hard block attached to the pump rod due to the crystallization, hardening and solidification of the material during the long-term operation of the polyurea or polyurethane spraying equipment, and then damages the seal during the reciprocating motion of the pump rod and causes leakage, based on the same concept as the above-mentioned embodiment 1, the new feed pump also includes:

[0037] One end of the second feeding component 102 is connected to the first connecting seat 102c, and the end of the second feeding component 102 away from the first connecting seat 102c is also provided with a first sealing member 102d. The fixed end sleeve 101d is sealed to the fixed end sleeve 101d. By adding the first connecting seat 102c and the first sealing member 102d, the connection stability, sealing performance and maintenance convenience of the feeding pump are optimized, which plays a key role in improving the practicability and reliability of the feeding system.

[0038] The third feeding assembly 103 includes a connecting rod 103a, one end of which is mounted with a pump rod 103b, an end of the connecting rod 103a away from the pump rod 103b is provided with a second sealing member 103c, and an end of the connecting rod 103a close to the second sealing member 103c is also connected with a piston 103d. The structural design of the third feeding assembly 103 optimizes the sealing performance, feeding accuracy and working efficiency of the feeding pump, while also reducing the difficulty of maintenance, thereby providing a strong guarantee for the stability, reliability and long-term operation of the feeding system.

[0039] The piston 103d includes a piston body 103d-1, and a second connecting seat 103d-2 is arranged on one side of the piston body 103d-1. The second connecting seat 103d-2 matches the structure of the first connecting seat 102c. The second connecting seat 103d-2 and the first connecting seat 102c are fixedly connected. The inner walls of the second connecting seat 103d-2 are also provided with flow guide holes 103d-3 on both sides. The design and function of the adjusting plug body 103d-1 and the second connecting seat 103d-2 inside the piston 103d play a core role in this patent. They not only enhance the structural stability and sealing of the feed pump, but also improve the working efficiency and adjustment flexibility of the feed pump.

[0040] Example 3, refer to Figure 3-5 In this embodiment, in order to solve the problem that the solidified hard block attached to the pump rod due to the crystallization, hardening and solidification of the material during the long-term operation of the polyurea or polyurethane spraying equipment, and then damages the seal during the reciprocating motion of the pump rod and causes leakage, based on the same concept as the above-mentioned embodiment 1, the new feed pump also includes:

[0041] The piston body 103d-1 is similar in structure to the bottom valve 101c. The piston body 103d-1 includes an adjusting shell 103d-1a. A guide cavity 103d-1b is provided inside one side of the adjusting shell 103d-1a. A valve ball 103d-1c is also provided inside the guide cavity 103d-1b. The piston body 103d-1 in this scheme is similar in structure to the bottom valve 101c. Both are composed of an adjusting shell 103d-1a, a guide cavity 103d-1b and a valve ball 103d-1c. They can respond to changes in fluid pressure and close or partially limit the flow when necessary, thereby preventing excessive feeding or preventing material leakage when the system is shut down, thereby ensuring the normal operation of the feeding system.

[0042] The first connecting seat 102c and one end of the telescopic sleeve 102a are sealed and welded, and the first connecting seat 102c and the second sealing member 103c are statically sealed. The present invention adopts the structural design of the statically sealed assembly between the first connecting seat 102c and the second sealing member 103c, which is both tight and leaves a certain space to accommodate the slight movement between the components. This can reduce the wear caused by friction during use and extend the service life of the seal, thereby ensuring the long-term stable operation of the feeding system.

[0043] The first seal 102d and the connecting rod 103a are sleeved together, and a large gap is left between the first seal 102d and the connecting rod 103a. The sleeved connection between the first seal 102d and the connecting rod 103a and the large gap left between the first seal 102d and the connecting rod 103a improves the movement flexibility of the feeding system, reduces wear, and simplifies maintenance and installation work.

[0044] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A novel feed pump, comprising a feed mechanism (100), characterized in that: The feeding mechanism (100) comprises a first feeding component (101) and a second feeding component (102) used in a spraying process in a polyurea or polyurethane related industry, wherein the second feeding component (102) is arranged inside the first feeding component (101), and a third feeding component (103) is also arranged inside the second feeding component (102); The first feeding assembly (101) comprises a pump housing (101a), and a discharge pipe (101b) is connected to the bottom of one end of the pump housing (101a); The second feeding assembly (102) is composed of multiple sets of telescopic sleeves (102a) spliced ​​end to end, and both ends of the multiple sets of telescopic sleeves (102a) are installed with connecting flanges (102b).

2. A novel feed pump according to claim 1, characterized in that: A bottom valve (101c) for controlling the opening or closing of the feed port is disposed at one end of the pump housing (101a) away from the discharge pipe (101b), and a fixed end sleeve (101d) is also disposed at one end of the pump housing (101a) close to the discharge pipe (101b).

3. A novel feed pump according to claim 2, characterized in that: One end of the second feeding assembly (102) is connected to a first connecting seat (102c), and an end of the second feeding assembly (102) away from the first connecting seat (102c) is also provided with a first sealing member (102d), and the fixed end sleeves (101d) and the fixed end sleeves (101d) are sealedly connected.

4. A novel feed pump according to claim 3, characterized in that: The third feeding assembly (103) comprises a connecting rod (103a), one end of which is mounted with a pump rod (103b), an end of the connecting rod (103a) away from the pump rod (103b) is provided with a second sealing member (103c), and an end of the connecting rod (103a) close to the second sealing member (103c) is also connected with a piston (103d).

5. A novel feed pump according to claim 4, characterized in that: The piston (103d) comprises a piston body (103d-1), a second connecting seat (103d-2) is provided on one side of the piston body (103d-1), the second connecting seat (103d-2) matches the structure of the first connecting seat (102c), the second connecting seat (103d-2) and the first connecting seat (102c) are fixedly connected, and flow guide holes (103d-3) are respectively provided on both sides of the inner wall of the second connecting seat (103d-2).

6. A novel feed pump according to claim 5, characterized in that: The piston body (103d-1) is similar in structure to the bottom valve (101c), and the piston body (103d-1) comprises an adjusting shell (103d-1a), a flow guiding cavity (103d-1b) is provided inside one side of the adjusting shell (103d-1a), and a valve ball (103d-1c) is also provided inside the flow guiding cavity (103d-1b).

7. A novel feed pump according to claim 6, characterized in that: The first connection seat (102c) and one end of the telescopic sleeve (102a) are sealed and welded, and the first connection seat (102c) and the second sealing member (103c) are statically sealed and assembled.

8. A novel feed pump according to claim 4, characterized in that: The first sealing member (102d) and the connecting rod (103a) are sleeve-connected, and a relatively large gap is left between the first sealing member (102d) and the connecting rod (103a).

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