Mechanical condensate recovery pump linkage

Abstract

The utility model relates to the field of mechanical condensate water recovery pump, relate to a mechanical condensate water recovery pump connecting rod mechanism, the utility model sets up in the main part of recovery pump, the main part lower extreme is equipped with the water inlet and water outlet of taking check valve, the main part upper end is equipped with air inlet valve seat and exhaust valve seat, is equipped with air inlet valve core in air inlet valve seat, is equipped with exhaust valve core in exhaust valve seat, including fixed plate, is provided with the connecting rod mechanism of sequentially pivoted on fixed plate, and the connecting rod mechanism includes first connecting rod, second connecting rod, third connecting rod, fourth connecting rod and fifth connecting rod, first connecting rod one end is pivoted with fixed plate, and the other end is connected with the float ball, fifth connecting rod one end is pivoted with fourth connecting rod, and the other end connects air inlet valve core and exhaust valve core, and spring is connected between second connecting rod and fourth connecting rod, the float ball linkage connecting rod mechanism realizes the opening and closing of air inlet valve core and exhaust valve core, keeps stable before critical point through connecting rod mechanism, avoids exhaust valve assembly and air inlet valve assembly frequent action, and promotes work stability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical condensate recovery pumps, and specifically to a linkage mechanism for a mechanical condensate recovery pump. Background Technology

[0002] Mechanical steam condensate recovery pumps are mainly used in processes where steam is used to heat the medium. After the steam condenses, it becomes high-temperature condensate. This condensate contains about 20% of the total heat of the steam. Direct discharge of this condensate will cause a huge loss of heat energy and water resources. It not only increases the company's condensate treatment costs, but also consumes a lot of money to heat the new water supply. Therefore, large-scale condensate recovery and the adoption of an effective and reasonable condensate recovery system will bring amazing and considerable economic benefits to the company.

[0003] Traditional condensate recovery methods use a combination of water tanks and electric pumps, requiring the installation of large water tanks, electric pumps, and level control systems. This necessitates significant on-site installation space, involves mechanical instrumentation and electrical engineering expertise, and results in a high equipment failure rate. Furthermore, cavitation caused by electric pumps can easily pose safety hazards. It is also unsuitable for recovering high-temperature condensate. Mechanical steam condensate recovery, on the other hand, requires no external power source, relying instead on on-site steam or compressed air. It is easy to install on-site, and the recovered condensate can reach temperatures up to 198 degrees Celsius, making it more suitable for hazardous and explosion-proof environments.

[0004] If the applicant filed an earlier application, Chinese Patent Application No. CN201820577785.2 discloses a mechanical condensate recovery pump, which includes: a main body of the condensate recovery pump, the main body including a pump cover, a pump body, an exhaust valve assembly and an intake valve assembly mounted on the pump cover, a linkage mechanism mounted on the pump cover by bolts, a float mounted on the linkage mechanism, the pump cover and the pump body being fixedly connected by bolts, the float and the linkage mechanism being fixedly connected by threads, a spring assembly being mounted on the linkage mechanism, and check valves being provided at both the inlet and outlet ends of the pump body, thus forming a complete mechanical condensate recovery pump.

[0005] The configuration of the linkage mechanism affects the working state of the condensate recovery pump. Currently, ordinary linkage mechanisms cause the float to rise and fall continuously at the critical point, and the exhaust valve assembly and intake valve assembly to open and close frequently, resulting in poor performance. Utility Model Content

[0006] This invention addresses the problems of existing technologies by providing a mechanical condensate recovery pump linkage mechanism.

[0007] The purpose of this utility model can be achieved through the following technical solution: A mechanical condensate recovery pump linkage mechanism is set in the main body of the recovery pump. The lower end of the main body is provided with an inlet and an outlet with a check valve. The upper end of the main body is provided with an air inlet valve seat and an air outlet valve seat. An air inlet valve core is provided in the air inlet valve seat, and an air outlet valve core is provided in the air outlet valve seat. The mechanism includes a fixed plate, and a linkage mechanism pivotally connected in sequence is provided on the fixed plate. The linkage mechanism includes a first linkage, a second linkage, a third linkage, a fourth linkage, and a fifth linkage.

[0008] One end of the first connecting rod is pivotally connected to the fixed plate, and the other end is connected to a float.

[0009] One end of the fifth link is pivotally connected to the fourth link, and the other end is connected to the intake valve core and the exhaust valve core;

[0010] A spring connects the second link and the fourth link;

[0011] The float linkage mechanism enables the opening and closing of the intake valve core and the exhaust valve core.

[0012] In a further improvement, the upper end of the intake valve seat is provided with a power intake port one, and a flare is provided below the power intake port one. A stainless steel ball is provided inside the flare, and the stainless steel ball is located at the upper end of the intake valve core. The lower end of the intake valve seat is provided with a power intake port two that can communicate with the intake valve core. The stainless steel ball can be raised and lowered to open and close the bottom of the flare to control the intake of the power intake port one. The upper end of the exhaust valve seat is provided with a power outlet port one, and the lower end of the exhaust valve seat is provided with a power outlet port two that can communicate with the exhaust valve core. The head of the intake valve core has an equal area curve structure.

[0013] In a further improvement, the fixing plate is provided with a first limiting pin at the first connecting rod, the first limiting pin being used to limit the downward sinking of the end of the first connecting rod connected to the float; the fixing plate is provided with a second limiting pin at the fourth connecting rod, the second limiting pin being used to limit the upward tilting of the end of the fourth connecting rod connected to the third connecting rod.

[0014] In a further improvement, the first limiting pin is located below the first connecting rod.

[0015] In a further improvement, the second limiting pin is located above the fourth link, and the second limiting pin is located between the pivot point of the fourth link and the fixed plate and the third link.

[0016] In a further improvement, the second limiting pin is located below the fourth link, and the second limiting pin is located between the pivot point of the fourth link and the fixed plate and the fifth link.

[0017] In a further improvement, the main body also includes a pump cover and a pump body, the pump cover and the pump body being fixedly connected by bolts, and the air valve seat and the exhaust valve seat being installed on the pump cover.

[0018] As a further improvement, the fifth link is arranged vertically.

[0019] As a further improvement, the intake valve seat is also provided with a pin located at the upper end of the stainless steel ball.

[0020] Compared with the prior art, the beneficial effects of the mechanical condensate recovery pump linkage mechanism of this utility model are as follows:

[0021] The system employs a five-bar linkage with springs in sequence and is equipped with limit pins. The linkage mechanism maintains stability before the critical point, preventing frequent operation of the exhaust valve assembly and intake valve assembly, thus effectively improving operational stability. At the same time, the special design of the intake valve seat and intake valve core reduces flow resistance, accelerates the system's operating frequency, and improves condensate recovery efficiency. This not only meets the reliability requirements of industrial production but also achieves the goal of high efficiency and energy saving. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the application of this utility model in a mechanical condensate recovery pump;

[0023] Figure 2 This is a front view of the linkage mechanism of this utility model when recovering condensate;

[0024] Figure 3 This is a front view of the linkage mechanism of this utility model when discharging condensate;

[0025] Figure 4 This is a side view of the linkage mechanism of this utility model when recovering condensate;

[0026] Figure 5 This is a side view of the linkage mechanism of this utility model when discharging condensate;

[0027] Figure 6 This is a schematic diagram of the power gas inlet component in this utility model.

[0028] In the diagram, 1-fixed plate, 2-spring, 3-check valve one, 4-check valve two, 5-first limit pin, 6-second limit pin, 11-first connecting rod, 12-second connecting rod, 13-third connecting rod, 14-fourth connecting rod, 15-fifth connecting rod, 16-stainless steel ball, 17-pin, 18-intake valve seat, 19-exhaust valve seat, 20-pump body, 21-pump cover, 23-intake valve core, 24-exhaust valve core, 25-connecting rod mechanism, 26-float, 27-flare, 28-equivalent area curve structure. Detailed Implementation

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] The following describes the embodiments and appendices. Figures 1-6 The technical solution of this utility model will be further described below.

[0031] Example 1

[0032] A mechanical condensate recovery pump linkage mechanism is disposed in the main body of the recovery pump. The lower end of the main body is provided with an inlet and an outlet with check valves. The upper end of the main body is provided with an air inlet valve seat 18 and an air outlet valve seat 19. An air inlet valve core 23 is disposed in the air inlet valve seat 18, and an air outlet valve core 24 is disposed in the air outlet valve seat 19. The mechanism includes a fixed plate 1, on which a linkage mechanism is pivotally connected in sequence. The linkage mechanism includes a first link 11, a second link 12, a third link 13, a fourth link 14, and a fifth link 15.

[0033] One end of the first connecting rod 11 is pivotally connected to the fixed plate 1, and the other end is connected to a float 26;

[0034] One end of the fifth link 15 is pivotally connected to the fourth link 14, and the other end is connected to the intake valve core 23 and the exhaust valve core 24.

[0035] A spring 2 is connected between the second link 12 and the fourth link 14;

[0036] The float linkage mechanism enables the opening and closing of the intake valve core 23 and the exhaust valve core 24.

[0037] As a further preferred embodiment, the upper end of the intake valve seat 18 is provided with a first power intake port, and below the first power intake port is a flared port 27. A stainless steel ball 16 is disposed within the flared port 27, located at the upper end of the intake valve core 23. The lower end of the intake valve seat 18 is provided with a second power intake port that can communicate with the intake valve core 23. The stainless steel ball 16 can be raised or lowered to open or close the bottom of the flared port 27 to control the air intake of the first power intake port. The upper end of the exhaust valve seat 19 is provided with a first power outlet port, and the lower end of the exhaust valve seat 19 is provided with a second power outlet port that can communicate with the exhaust valve core 24. The head of the intake valve core 23 has an equal area curve structure 28. The equal area curve structure and the flared design of the stainless steel ball at its maximum diameter minimize the flow resistance when power air flows in, effectively shortening the inflation time and accelerating the system's operating frequency.

[0038] As a further preferred embodiment, the fixing plate 1 is provided with a first limiting pin 5 corresponding to the first connecting rod 11. The first limiting pin 5 is used to limit the downward sinking of the end of the first connecting rod 11 connected to the float 26, ensuring that the float moves within a reasonable range. The fixing plate 1 is provided with a second limiting pin 6 corresponding to the fourth connecting rod 14. The second limiting pin 6 limits the upward tilting of the end of the fourth connecting rod 14 connected to the third connecting rod 13, ensuring that the position and range of motion of the fourth connecting rod meet the design requirements during the movement of the linkage mechanism.

[0039] As a further preferred embodiment, the first limiting pin 5 is located below the first connecting rod 11.

[0040] As a further preferred embodiment, the second limiting pin 6 is located above the fourth link 14, and the second limiting pin 6 is located between the pivot point of the fourth link 14 and the fixing plate 1 and the third link 13.

[0041] As a further preferred embodiment, the second limiting pin 6 is located below the fourth link 14, and the second limiting pin 6 is located between the pivot point of the fourth link 14 and the fixing plate 1 and the fifth link 15.

[0042] As a further preferred embodiment, the main body also includes a pump cover 21 and a pump body 22, the pump cover 21 and the pump body 22 are fixedly connected by bolts, and the air valve seat 18 and the exhaust valve seat 19 are installed on the pump cover 21.

[0043] As a further preferred embodiment, the fifth link 15 is arranged vertically. This makes its connection with the intake valve core and exhaust valve core more direct and stable, and when the linkage mechanism drives the fifth link to move, it can more efficiently and accurately control the opening and closing of the intake valve core and exhaust valve core.

[0044] As a further preferred embodiment, the intake valve seat 18 is also provided with a pin 17 located at the upper end of the stainless steel ball 16. The pin 17 fixed on the valve seat can prevent the stainless steel ball from being pushed out of the valve seat.

[0045] like Figures 1-6 As shown, the working principle of this utility model is as follows:

[0046] by Figure 2 Taking the shown perspective as an example, it is the first state of the five-link linkage. The float 26 causes the right end of the first link 11 to sink downwards due to its own weight. At this time, the second link 12 is pulled downwards, and the top of the second link 12 is lower than the left end of the fourth link 14. Under the action of the spring 2, the right end of the third link 13 is higher than the left end, and at the same time, the left end of the fourth link 14 is higher than the right end. The fourth link 14 abuts against the second limiting pin 6. The pivot points of the third link 13 and the fourth link 14 are the highest points of the third link 13 and the fourth link 14, respectively. The fifth link 15 is pulled downwards. At this time, the five-link linkage can maintain a stable state.

[0047] like Figure 3 Taking the shown perspective as an example, it is the second state of the five-link linkage. At this time, the float is pushed upward by the water, the second link 12 is pushed upward, and the top of the second link 12 is higher than the fourth link 14. Under the action of the spring 2, the right end of the third link 13 is lower than the left end, and at the same time, the left end of the fourth link 14 is lower than the right end. The pivot points of the third link 13 and the fourth link 14 are the lowest points of the third link 13 and the fourth link 14, respectively. The fifth link 15 is pushed upward.

[0048] During the transition from the first state to the second state, the second link 12 rises continuously until the third link 13 and the fourth link 14 reach a straight line, at which point a critical point is reached. Before this critical point, the fourth link 14 remains stationary, the second link 12 continues to rise, and the left end of the third link 13 will be higher than the right end. After passing the critical point, under the action of the spring 2, the fourth link 14 rotates rapidly, causing the left end to sink downwards and the right end to push up the fifth link 15.

[0049] Similarly, during the transition from the second state to the first state, before the third link 13 and the fourth link 14 reach the critical point, regardless of the positions of the second link 12 and the first link 11, the fourth link 14 remains stationary. After passing the critical point, the left end of the fourth link 14 lifts upward, and the right end pulls the fifth link 15 downward. The middle of each link is not exactly at the 1 / 2 mark; it can deviate from its exact center.

[0050] The springs used are spring components independently developed and designed by the company and have obtained national patents, with patent number 201820577785.

[0051] When the condensed water flows into the pump body cavity through the inlet equipped with check valve 3 under the pressure of the water head, at this time, due to the gravity of the float 26 and the connecting rod structure 25, and under the tension of the spring 2, each connecting rod is in a state as follows. Figure 2 As shown in the diagram, the intake valve core 23 and exhaust valve core 24 are in the lower position. The stainless steel ball 16 descends, preventing the power air from entering the intake valve core 23. At the same time, the gas inside the pump is discharged through the side hole of the exhaust valve seat 19 and the second power outlet. In this way, condensate can flow in continuously. At this time, the outlet with check valve 2 4 is closed. As the water level in the pump body cavity continues to rise, the float 26 also rises continuously under the action of buoyancy. At this time, before the third link 13 and the fourth link 14 reach the parallel position (critical point), the fifth link 15 remains stationary due to the action of the spring 2, thus ensuring that the intake and exhaust valve cores 23 remain stationary in their current state.

[0052] The second, third, and fourth links form a critical point for rotation, connecting the float to the exhaust valve assembly and the intake valve assembly via a five-bar linkage. Before the third and fourth links rotate to the critical point, the fourth link remains stationary, preventing frequent operation of the exhaust and intake valve assemblies.

[0053] As the float 26 rises further and reaches the design water level, the third link 13 and the fourth link 14 reach and exceed the parallel position (critical point), and the linkage mechanism switches to... Figure 4 In the working state, due to the force of the spring assembly, the intake valve core 23 and the exhaust valve core 24 are in the upper position. The stainless steel ball 16 is pushed open by the intake valve core 23, and the power air flows in through the intake valve seat through the power intake port one and the power intake port two. At the same time, the power outlet is closed. As the gas in the upper chamber of the pump body continues to increase, the gas pressure in the chamber continues to increase. The check valve 3 at the water inlet is closed, and the check valve 4 at the water outlet is opened. Under the pressure of the power air, the condensate in the pump body is pumped out from the water outlet at a certain pressure. Without the need for additional pressurization, it can be directly pumped into the condensate recovery equipment to realize the recovery of condensate.

[0054] As the water level in the pump chamber decreases, the float descends, driving the linkage mechanism to return to its initial working state. The condensate can then flow into the pump body through the inlet, starting another working cycle.

[0055] One end of this mechanism is connected to a float, and the other end is connected to a valve core that controls the opening and closing of the inlet and outlet of the power air source. When the water level in the recovery pump rises or falls, the float moves up and down under the buoyancy of the condensate, thereby driving the movement of the linkage mechanism. When it reaches the corresponding node position, the linkage mechanism switches, thereby driving the valve core to open and close. This realizes the supply and discharge of power air, and at the same time, the inflow and outflow of condensate.

[0056] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A mechanical condensate recovery pump linkage mechanism, disposed within the main body of the recovery pump, wherein the lower end of the main body is provided with an inlet and an outlet with check valves, and the upper end of the main body is provided with an air inlet valve seat and an air outlet valve seat, wherein the air inlet valve seat contains an air inlet valve core, and the air outlet valve seat contains an air outlet valve core, characterized in that, Includes a fixed plate, on which a linkage mechanism is pivotally connected in sequence, the linkage mechanism including a first link, a second link, a third link, a fourth link and a fifth link; One end of the first connecting rod is pivotally connected to the fixed plate, and the other end is connected to a float. One end of the fifth link is pivotally connected to the fourth link, and the other end is connected to the intake valve core and the exhaust valve core; A spring connects the second link and the fourth link; The float linkage mechanism enables the opening and closing of the intake valve core and the exhaust valve core.

2. The mechanical condensate recovery pump linkage mechanism according to claim 1, characterized in that, The upper end of the intake valve seat is provided with a power intake port one, and a flared opening is provided below the power intake port one. A stainless steel ball is provided inside the flared opening, and the stainless steel ball is located at the upper end of the intake valve core. The lower end of the intake valve seat is provided with a power intake port two that can communicate with the intake valve core. The stainless steel ball can be raised and lowered to open and close the bottom of the flared opening to control the air intake of the power intake port one. The upper end of the exhaust valve seat is provided with a power exhaust port one, and the lower end of the exhaust valve seat is provided with a power exhaust port two that can communicate with the exhaust valve core. The head of the intake valve core has an equal area curve structure.

3. The mechanical condensate recovery pump linkage mechanism according to claim 1, characterized in that, The fixing plate is provided with a first limiting pin at the first connecting rod, which is used to limit the downward sinking of the end of the first connecting rod connected to the float; the fixing plate is provided with a second limiting pin at the fourth connecting rod, which limits the upward tilting of the end of the fourth connecting rod connected to the third connecting rod.

4. The mechanical condensate recovery pump linkage mechanism according to claim 3, characterized in that, The first limiting pin is located below the first connecting rod.

5. The mechanical condensate recovery pump linkage mechanism according to claim 3, characterized in that, The second limiting pin is located above the fourth link, and the second limiting pin is located between the pivot point of the fourth link and the fixed plate and the third link.

6. The mechanical condensate recovery pump linkage mechanism according to claim 3, characterized in that, The second limiting pin is located below the fourth link, and the second limiting pin is located between the pivot point of the fourth link and the fixed plate and the fifth link.

7. The mechanical condensate recovery pump linkage mechanism according to claim 1, characterized in that, The main body also includes a pump cover and a pump body, the pump cover and the pump body are fixedly connected by bolts, and the air valve seat and the exhaust valve seat are installed on the pump cover.

8. The mechanical condensate recovery pump linkage mechanism according to claim 1, characterized in that, The fifth link is arranged vertically.

9. The mechanical condensate recovery pump linkage mechanism according to claim 2, characterized in that, The intake valve seat is also equipped with a pin located at the upper end of the stainless steel ball.

Images