High temperature resistant corrugated pipe pump
By using a threaded connection structure and a central shaft design, the problem of loose connections in bellows pumps under high temperature and high pressure is solved, achieving structural stability and reliable fluid delivery.
Patent Information
- Application Number
- CN202520014640.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-04
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-04
AI Technical Summary
Under high temperature and high pressure conditions, the connection of existing bellows pumps is prone to loosening, which can lead to gaps, affect fluid delivery, and potentially cause safety issues.
The design employs a threaded connection structure and a central shaft, using multiple internal and external threads to secure the end cap and outer shell. Combined with a positioning sleeve and ceramic core, this ensures the stability of the bellows position and prevents loosening and deformation.
Maintaining structural stability under high temperature and pressure prevents fluid leakage, ensures effective fluid delivery, and avoids safety hazards.
Smart Images
Figure CN223608754U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fluid delivery pump technical field, concretely is a kind of high-temperature corrugated pipe pump. BACKGROUND
[0002] Corrugated pipe pump is a kind of fluid can be transported when high temperature, high pressure, and has good delivery effect, so, it has been widely applied in semiconductor industry and electronic industry.
[0003] The working cavity of the existing corrugated pipe pump when high temperature, high pressure, corrugated pipe compression and stretching action also exists high temperature, high pressure condition, and the components in the working cavity outside of corrugated pipe pump are mostly detachable components, so the connecting position of these components is prone to looseness when high temperature, high pressure, leading to the connecting position of the edge position component of corrugated pipe pump appears gap, affect the position stability of corrugated pipe, when the position of corrugated pipe deviates, fluid in corrugated pipe pump will pass through the gap between corrugated pipe and working cavity, then along the gap of the connecting position of the edge position component of corrugated pipe pump from the leakage of corrugated pipe pump, not only cause pollution to the environment around corrugated pipe pump, serious time can cause safety problem. SUMMARY
[0004] In view of the technical defects in the background art, the utility model provides a kind of high-temperature corrugated pipe pump, solve the above-mentioned technical problems and meet the actual demand, and the specific technical scheme is as follows:
[0005] A kind of high-temperature corrugated pipe pump, the corrugated pipe pump includes shell, ball valve and gas valve, the gas valve is arranged in the side wall of shell, the middle part of shell is equipped with at least two ball valve cavities, the ball valve is arranged in ball valve cavity, the shell in the lower side of ball valve cavity is equipped with input channel communicated with ball valve cavity, the top of shell is equipped with output channel communicated with ball valve cavity, the both ends of shell are equipped with working cavity communicated with ball valve cavity, the working cavity is equipped with corrugated pipe, the shell between two ball valve cavities is equipped with matching hole, the matching hole is matched with the center shaft connected with the end of corrugated pipe, the end cap is connected to the end of shell outside the working cavity by screw thread connection structure, one end of corrugated pipe is fixed between end cap and the end face of shell, and is connected with the matching seat in end cap by corrugated pipe joint, and the end cap is connected with the output end of gas valve by gas pipe joint and pipeline.
[0006] As a further implementation form of the utility model, the threaded connection structure includes first external thread, second external thread, third external thread, first internal thread and second internal thread, the edge surface of the end cover is equipped with a first groove, the first external thread is arranged on the wall surface of the large diameter side of the first groove, the second external thread is arranged on the wall surface of the small diameter side of the first groove, the end face of the shell on the outside of the working cavity is equipped with a first convex edge, the wall surface of both sides of the first convex edge is equipped with the first internal thread matched with the first external thread and the second external thread respectively, the wall surface of the end cover inside the first groove is equipped with a second groove, the third external thread is arranged on the wall surface of the large diameter side of the second groove, the wall surface of the shell inside the first convex edge is equipped with a second convex edge, the wall surface of the large diameter side of the second convex edge is equipped with the second internal thread, and the second internal thread is matched with the third external thread.
[0007] As a further implementation form of the utility model, the axial end face of the second convex edge is equipped with a third convex edge, the axial end face of the second convex edge inside the third convex edge is equipped with a third groove, the axial end face of the end cover inside the second internal thread is equipped with a fourth groove, one end of the bellows is a fourth convex edge, both axial end faces of the fourth convex edge are equipped with a fifth convex edge, and the two fifth convex edges are matched in the third groove and the fourth groove respectively.
[0008] As a further implementation form of the utility model, the matching hole is a threaded hole, both ends of the central shaft in the axial direction are matched with a positioning sleeve, and the outer surface of the positioning sleeve is equipped with a fourth external thread matched with the matching hole.
[0009] As a further implementation form of the utility model, a cavity is arranged in the central shaft, a core body is matched in the cavity, and the core body is made of ceramic material.
[0010] The utility model discloses the threaded connection structure in the bellows pump includes the internal thread and external thread distributed at the end cover and the end face of shell, and the end cover and shell are connected through the internal thread and external thread of multiple places, so that the component in the bellows pump outside the working cavity is connected more closely, one end of the bellows is fixed firmly between the end face of shell and end cover, and the central shaft arranged in the middle part of shell can avoid the deformation of the inside of bellows pump in high-temperature operation, so that the inside of bellows pump can still keep structural stability under high-temperature condition, to ensure that the bellows pump can normally carry out the delivery of fluid. ACCURACY OF DRAWINGS
[0011] Figure 1 It is the plan view of the bellows pump.
[0012] Figure 2 It is Figure 1 It is the section view of A-A direction.
[0013] Figure 3 For Figure 1 The schematic view of the section in B-B direction.
[0014] Figure 4 For Figure 2 The schematic view of the section in C.
[0015] Figure 5 The schematic view of the structure of the end cover.
[0016] Figure 6 The schematic view of the structure of the shell.
[0017] Figure 7 The schematic view of the structure of the bellows.
[0018] Figure 8 The schematic view of the structure of the positioning sleeve matched outside the central shaft.
[0019] In the figure, 1, shell; 11, ball valve cavity; 12, input channel; 13, output channel; 14, working cavity; 15, matching hole; 16, first convex edge; 17, second convex edge; 18, third convex edge; 171, third groove; 2, ball valve; 3, air valve; 4, bellows; 41, fourth convex edge; 411, fifth convex edge; 5, central shaft; 51, cavity; 52, core; 6, threaded connection structure; 61, first external thread; 62, second external thread; 63, third external thread; 64, first internal thread; 65, second internal thread; 7, end cover; 71, first groove; 72, second groove; 73, fourth groove; 8, positioning sleeve; 81, fourth external thread. DETAILED DESCRIPTION
[0020] The utility model discloses a kind of high-temperature-resistant bellows pumps, such as Figures 1-3 In combination shown, the bellows pump includes shell 1, ball valve 2 and air valve 3, the air valve 3 is arranged in the side wall of shell 1, the middle part of shell 1 is equipped with at least two ball valve 2 cavities 11, the ball valve 2 is arranged in ball valve 2 cavity 11, the shell 1 below ball valve 2 cavity 11 is equipped with input channel 12 communicated with ball valve 2 cavity 11, the top end of shell 1 is equipped with output channel 13 communicated with ball valve 2 cavity 11, the both ends of shell 1 are equipped with working cavity 14 communicated with ball valve 2 cavity 11, the working cavity 14 is equipped with bellows 4, the shell 1 between two ball valve 2 cavities 11 is equipped with matching hole 15, the matching hole 15 is matched with the central shaft 5 connected with the end of bellows 4, the end of shell 1 outside working cavity 14 is connected with end cover 7 by threaded connection structure 6, one end of bellows 4 is fixed between end cover 7 and the end face of shell 1, and is connected with the matching seat in end cover 7 by bellows joint, and the end cover 7 is connected with the output end of air valve 3 by air pipe joint and pipeline.
[0021] Need to explain: the bellows pump gas valve 3 and the outside of the gas source (not shown in the figure) connected to the transmission of gas, input channel 12 and output channel 13 by joint and input fluid medium pipe (not shown in the figure) and output fluid medium pipe (not shown in the figure) connection; gas valve 3 through the pipeline transmission gas to the bellows pump both ends of the bellows 4, for the bellows 4 compression fluid medium into the ball valve 2 to provide power, so that the fluid medium from the input channel 12 into; fluid medium compression into the ball valve 2, through to the bellows pump both ends of the bellows 4 in the two working chamber 14 in the continuous compression and expansion, so that the fluid medium into the output channel 13, and then by the output channel 13 pump out to the bellows pump outside.
[0022] In addition, in the bellows pump both ends of the bellows 4 continuously compression and expansion, if the temperature of the fluid medium is too high, the working chamber 14 of the bellows pump will form a high temperature, high pressure state, when the bellows pump inside this situation, located outside the working chamber 14 and used to maintain the working chamber 14 end closed bellows pump components, under the action of high temperature, high pressure, prone to loose between each other, resulting in the position of the bellows 4 in the working chamber 14 is unstable, and further affect the transmission effect of the bellows pump on the fluid medium; therefore, the bellows pump disclosed in the present application is provided with screw connection structure 6, and the screw connection structure 6 includes the internal and external threads distributed at the end cover 7 and the end surface of the shell 1, the end cover 7 and the shell 1 are connected by the cooperation of the plurality of internal and external threads, so that the connection between the end cover 7 and the shell 1 used to maintain the end of the working chamber 14 of the bellows pump becomes more closely, to prevent the gap from appearing at the edge of the bellows pump due to the loose connection between the end cover 7 and the shell 1, and one end of the bellows 4 is firmly fixed between the end surface of the shell 1 and the end cover 7, so as to maintain the position stability of the bellows 4; and the center shaft 5 arranged in the middle of the shell 1 can avoid the deformation of the inside of the bellows pump under high temperature operation, so that the structure of the bellows pump can remain stable under high temperature, to ensure that the bellows pump can normally transport fluid.
[0023] Need to further explain that, as Figure 2 , Figure 5 and Figure 6In combination shown, the threaded connection structure 6 includes a first external thread 61, a second external thread 62, a third external thread 63, a first internal thread 64 and a second internal thread 65, the rim surface of the end cover 7 is provided with a first groove 71, the first external thread 61 is arranged on the wall surface of the large diameter side of the first groove 71, the second external thread 62 is arranged on the wall surface of the small diameter side of the first groove 71, the end surface of the shell 1 outside the working cavity 14 is provided with a first convex edge 16, the wall surfaces of both sides of the first convex edge 16 are provided with the first internal thread 64 matched with the first external thread 61 and the second external thread 62 respectively, the wall surface of the end cover 7 inside the first groove 71 is provided with a second groove 72, the third external thread 63 is arranged on the wall surface of the large diameter side of the second groove 72, the wall surface of the shell 1 inside the first convex edge 16 is provided with a second convex edge 17, the second internal thread 65 is arranged on the wall surface of the large diameter side of the second convex edge 17, and the second internal thread 65 is matched with the third external thread 63.
[0024] When the end cover 7 is screwed into the axial end of the shell 1, the large diameter side of the first groove 71 is matched with the first internal thread 64 at the large diameter side of the first convex edge 16 through the first external thread 61, then the small diameter side of the first groove 71 is matched with the first internal thread 64 at the small diameter side of the first convex edge 16 through the second external thread 62, and then the second internal thread 65 at the large diameter side of the second convex edge 17 is matched with the third external thread 63 at the large diameter side of the second groove 72, so that the connection of the end cover 7 and the shell 1 is realized through the matching of multiple groups of internal and external threads, and the connection is tight.
[0025] Specifically, as Figure 4 , Figure 5 and Figure 6 In combination shown, the axial end surface of the second convex edge 17 is provided with a third convex edge 18, the axial end surface of the second convex edge 17 inside the third convex edge 18 is provided with a third groove 171, the axial end surface of the end cover 7 inside the second internal thread 65 is provided with a fourth groove 73, one end of the bellows 4 is a fourth convex edge 41, both axial end surfaces of the fourth convex edge 41 are provided with a fifth convex edge 411, and the two fifth convex edges 411 are matched in the third groove 171 and the fourth groove 73 respectively.
[0026] Among them, through the third convex edge 18, the axial end part of the bellows 4 where the fourth convex edge 41 is located can be aligned when the bellows 4 is installed, so that the axial end part of the bellows 4 where the fourth convex edge 41 is located is at the specified position; similarly, through the matching of the fifth convex edges 411 on both sides of the bellows 4 with the third groove 171 and the fourth groove 73 respectively, the axial end part of the bellows 4 where the fourth convex edge 41 is located can be aligned when the bellows 4 is installed, so that the axial end part of the bellows 4 where the fourth convex edge 41 is located is fixed between the end cover 7 and one of the axial end parts of the shell 1.
[0027] In addition, due to the fourth convex edge 41 located at the axial end of the bellows 4, when the end cover 7 is fitted to the axial end of the shell 1, the axial end face of the end cover 7 located inside the second internal thread 65 is pressed against the end face of the second convex edge 17 away from the center of the shell 1, but when the working chamber 14 is in a high temperature and high pressure state, the fourth convex edge 41 still has the possibility of loosening, and the fourth convex edge 41 is easy to be separated from between the end cover 7 and the second convex edge 17, resulting in that the position of the entire bellows 4 cannot be maintained, the bellows 4 cannot realize the operation of pressing the fluid medium into and out of the ball valve 2 through expansion and contraction, and after the position of the bellows 4 cannot be maintained and deviates, the fluid medium is easy to flow into the gap between the bellows 4 and the working chamber 14, and then flow out to the outside from the position where the end cover 7 and the shell 1 are threadedly connected, causing adverse effects; therefore, by matching the fifth convex edge 411 on both sides of the bellows 4 with the third groove 171 and the fourth groove 73 respectively, the axial end of the bellows 4 where the fourth convex edge 41 is located can be positioned, the connection between the bellows 4 and the end cover 7 and the shell 1 is more tight, and the situation that the axial end of the bellows 4 where the fourth convex edge 41 is located is separated from between the end cover 7 and the shell 1 when the working chamber 14 is in a high temperature and high pressure state is prevented.
[0028] It needs to be further explained that, as shown in Figure 2 and Figure 8 As shown in combination, the matching hole 15 is a threaded hole, both ends of the central shaft 5 in the axial direction are matched with a positioning sleeve 8, and the outer surface of the positioning sleeve 8 is provided with a circle of fourth external threads 81 for matching with the matching hole 15.
[0029] The positioning sleeve 8 is installed to both ends of the matching hole 15 in the direction of thread matching of the fourth external threads 81 and the matching hole 15, then the central shaft 5 is matched to the middle part of the positioning sleeve 8, and finally both ends of the central shaft 5 in the axial direction are connected to the end parts of the bellows 4 inside the bellows pump on both sides, so as to position the bellows 4 inside the bellows pump, and make the action of the bellows 4 more stable during compression and expansion.
[0030] It needs to be further explained that, as shown in Figure 2 The central shaft 5 is provided with a cavity 51 inside, the cavity 51 is matched with a core 52, and the core 52 is made of ceramic material.
[0031] If the high temperature and high pressure state of the working chamber 14 inside the bellows pump causes damage to the surface of the central shaft 5, the core 52 provided at the center of the central shaft 5 can still ensure that the overall shape of the central shaft 5 does not change, so as to maintain the positioning effect of the central shaft 5 on the bellows 4 inside the bellows pump.
[0032] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.
Claims
1. A high-temperature-resistant bellows pump, comprising a shell, a ball valve and a gas valve, the gas valve is arranged on the side wall of the shell, the middle part of the shell is provided with at least two ball valve cavities, and the ball valve is arranged in the ball valve cavities, characterized in that, The shell below the ball valve cavity is provided with an input channel communicated with the ball valve cavity, the top end of the shell is provided with an output channel communicated with the ball valve cavity, both ends of the shell are provided with working cavities communicated with the ball valve cavity, the working cavities are provided with bellows, the shell between the two ball valve cavities is provided with a matching hole, the matching hole is matched with a central shaft connected with the end of the bellows, the end of the shell outside the working cavity is connected with an end cover through a threaded connection structure, one end of the bellows is fixed between the end cover and the end face of the shell and connected with the matching seat in the end cover through a bellows joint, the end cover is connected with the output end of the gas valve through a gas pipe joint and a pipeline.
2. The bellows pump of claim 1, wherein, The threaded connection structure comprises a first external thread, a second external thread, a third external thread, a first internal thread and a second internal thread, the edge surface of the end cover is provided with a first groove, the first external thread is arranged on the wall surface of the large diameter side of the first groove, the second external thread is arranged on the wall surface of the small diameter side of the first groove, the end face of the shell outside the working cavity is provided with a first convex edge, the wall surfaces on both sides of the first convex edge are provided with the first internal thread matched with the first external thread and the second external thread respectively, the wall surface of the end cover inside the first groove is provided with a second groove, the third external thread is arranged on the wall surface of the large diameter side of the second groove, the wall surface of the shell inside the first convex edge is provided with a second convex edge, the second internal thread is arranged on the wall surface of the large diameter side of the second convex edge, and the second internal thread is matched with the third external thread.
3. The bellows pump of claim 2, wherein, The axial end face of the second convex edge is provided with a third convex edge, the axial end face of the second convex edge inside the third convex edge is provided with a third groove, the axial end face of the end cover inside the second internal thread is provided with a fourth groove, one end of the bellows is a fourth convex edge, both axial end faces of the fourth convex edge are provided with a fifth convex edge, and the two fifth convex edges are matched in the third groove and the fourth groove respectively.
4. The bellows pump of claim 1, wherein, The matching hole is a threaded hole, both ends of the central shaft in the axial direction are matched with a positioning sleeve, and the outer surface of the positioning sleeve is provided with a fourth external thread matched with the matching hole.
5. The bellows pump of claim 1, wherein, The central shaft is provided with a cavity, the cavity is matched with a core, and the core is made of ceramic material. The central shaft is provided with a cavity, the cavity is matched with a core, and the core is made of ceramic material.