Fermentation tank with sampling function

Abstract

The utility model discloses a fermentation tank with a sampling function, and belongs to the technical field of fermentation tanks. A fermentation tank with a sampling function comprises a tank body, a plurality of pressing type sampling mechanisms are arranged on the tank body, an extrusion mechanism is arranged outside the tank body, each pressing type sampling mechanism comprises a communicating pipe fixed to the outer wall of the tank body and a sampling pipe connected into the communicating pipe in a sliding mode, and a quantifying assembly is arranged on each sampling pipe. The quantitative assembly is provided with a discharging assembly and a push rod, and the push rod is connected with the discharging assembly. According to the utility model, the purposes of flushing, discharging and collecting initial discarded liquid can be achieved, the accuracy of sampling work is ensured, the purpose of quantitatively collecting liquid materials can be achieved, the situation that the sampling amount is too large or too small each time can be effectively avoided, simultaneous sampling work of a plurality of pressing type sampling mechanisms can be achieved, and the sampling efficiency is improved. Therefore, the workload of sampling work can be greatly reduced, repeated work is avoided, and the sampling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fermentation tanks, in particular to a fermentation tank with a sampling function. Background Art

[0002] A fermenter is a container that provides an optimal environment for a specific biochemical process to occur within a microorganism. In industrial fermentation, it generally refers to equipment used for submerged microbial culture. Fermenters are the most important and widely used equipment in fermentation, serving as the heart of the fermentation industry and the bridge between raw materials and finished products. In practice, sampling the reactants within a fermenter is necessary to monitor the extent of the fermentation reaction.

[0003] In order to ensure the representativeness and accuracy of sampling, sampling ports are set at different heights of the fermentation tank. Although this can achieve the purpose of multi-point sampling, some samples left over from the last sampling will remain in the sampling port to a greater or lesser extent, and are easily collected together during this sampling. This will undoubtedly have a certain impact on the accuracy of sampling. Moreover, traditional sampling ports are not convenient for quantitative sampling, resulting in inconvenient control of the sampling volume, which can easily lead to over-sampling or under-sampling, and sampling operations need to be performed for each sampling port. Therefore, the more sampling ports there are, the greater the sampling workload will be, resulting in cumbersome sampling work and a large workload. Utility Model Content

[0004] The purpose of the utility model is to solve the problems in the prior art that residual samples in the sampling port easily affect the accuracy of sampling, are inconvenient for quantitative sampling, and the work of multi-point sampling is relatively cumbersome, and to propose a fermentation tank with a sampling function.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fermentation tank with a sampling function, comprising a tank body, a plurality of press-type sampling mechanisms provided on the tank body, and a squeezing mechanism for squeezing and driving the press-type sampling mechanism provided on the outside of the tank body, the press-type sampling mechanism comprising a connecting tube fixed on the outer wall of the tank body and a sampling tube slidably connected to the connecting tube, a quantitative component provided on the sampling tube, a discharge component and a push rod respectively provided on the quantitative component, the push rod being connected to the discharge component for driving the discharge component to open and discharge.

[0006] In some embodiments, a first return spring is connected between the connecting tube and the sampling tube, and a feed port is provided on one side of the sampling tube located in the tank body, and a discharge port is provided on the other side.

[0007] In some embodiments, the quantitative component includes a sealing piston slidably connected to the sampling tube and an adjusting rod fixedly connected to the outside of the sealing piston. The sealing piston is located between the feed port and the discharge port, and a locking member is provided between the adjusting rod and the sampling tube.

[0008] In some embodiments, the discharge assembly includes a discharge hole opened at the bottom of the sealing piston and a sealing plug inserted into the discharge hole. The sealing plug is rotatably connected to the sealing piston, and a connecting rod is connected between the sealing plug and the push rod.

[0009] In some embodiments, the push rod is slidably connected to the adjustment rod, and a second return spring is connected between the push rod and the adjustment rod.

[0010] In some embodiments, a sealing assembly is provided between the connecting tube and the sampling tube for sealing the connecting tube and the sampling tube.

[0011] In some embodiments, the sealing assembly includes a first sealing ring and an airbag sealing ring respectively fixed to the inner surface of the connecting tube. The first sealing ring and the airbag sealing ring are both sleeved on the sampling tube, and an extrusion part for extruding the airbag sealing ring is fixed on the outside of the sampling tube.

[0012] In some embodiments, the sealing assembly further includes an annular sealing groove and a sealing gasket. The sealing groove is opened at one end of the connecting tube located in the tank body, and the sealing gasket is fixed to one side of the sampling tube located in the tank body and arranged opposite to the sealing groove.

[0013] In some embodiments, the squeezing mechanism includes a pressure rod and a slide rail, the slide rail is fixed to the outer surface of the tank body, and the pressure rod is slidably connected to the slide rail.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model is provided with a press-type sampling mechanism. When sampling, the press-type sampling mechanism can discharge the initial waste liquid into the waste liquid collection bottle, and use the flowing liquid material to flush the interior of the sampling tube to a certain extent, thereby flushing the material or pollutants previously remaining in the sampling tube into the waste liquid collection bottle, achieving the purpose of flushing, discharging and collecting the initial waste liquid, thereby avoiding affecting subsequent collection and ensuring the accuracy of the sampling work.

[0016] 2. The utility model can achieve the purpose of quantitative collection of liquid materials through the setting of the quantitative component, effectively avoid the situation where the sampling amount is too much or too little each time, making the sampling work easier to control, and by adjusting the quantitative component, the volume of the cavity for temporarily storing liquid materials in the sampling tube can be adjusted, thereby achieving the purpose of adjusting the sampling amount and improving the flexibility of the sampling work.

[0017] 3. The utility model can realize the simultaneous sampling work of multiple upper and lower press-type sampling mechanisms through the coordinated arrangement of the press-type sampling mechanism and the extrusion mechanism, thereby greatly reducing the workload of sampling work, avoiding duplication of work, and improving sampling efficiency. In addition, when it is necessary to sample a certain part, it is only necessary to press the corresponding push rod separately, so the purpose of separate sampling can also be achieved, making the sampling work more flexible and practical.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0021] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the utility model in a front view.

[0022] Figure 4 for Figure 3 Enlarged structural diagram at point B in the middle.

[0023] Figure 5 It is a schematic diagram of the explosion three-dimensional structure of the push-type sampling mechanism.

[0024] Figure 6 It is a schematic diagram of the front view three-dimensional structure of the quantitative component.

[0025] Figure 7 This is a schematic diagram of the partial structure of the discharge assembly when it is closed.

[0026] Figure 8 This is a schematic diagram of the partial structure of the nesting component in the open state.

[0027] Figure 9 It is a schematic diagram of the three-dimensional partial structure of the extrusion mechanism from the front.

[0028] In the picture:

[0029] 10. Tank body; 11. Feed pipe; 12. Discharge pipe; 13. Thermometer; 14. Heat exchange tube; 15. Top cover; 20. Press-type sampling mechanism; 21. Connecting pipe; 211. Sealing groove; 212. Mounting groove; 22. Sampling tube; 221. Feed port; 222. Discharge port; 23. Dosing assembly; 231. Sealing piston; 232. Adjusting rod; 233. Locking member; 24. First return spring; 25. Discharge Assembly; 251, discharge hole; 252, sealing plug; 253, connecting rod; 26, push rod; 27, second return spring; 28, sealing assembly; 281, first sealing ring; 282, airbag sealing ring; 283, extrusion part; 284, sealing gasket; 29, second sealing ring; 30, extrusion mechanism; 31, pressure rod; 32, slide rail; 321, placement groove; 33, roller; 41, waste liquid collection bottle; 42, sample collection bottle. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Reference Figure 1 and Figure 3 A fermentation tank with a sampling function includes a tank body 10, a feeding pipe 11 is installed on the upper part of the tank body 10 for feeding materials into the tank body 10, and a discharging pipe 12 is installed at the lower part for discharging the materials in the tank body 10 to the outside, a heat exchange tube 14 is installed inside the tank body 10 for heating or cooling the materials therein, and a thermometer 13 is installed in the middle of the tank body 10 for monitoring the temperature therein, and a manhole for maintenance is also opened at the upper end of the tank body 10, and a top cover 15 for sealing is installed at the upper end of the manhole.

[0032] Reference Figures 1 to 4 A plurality of press-type sampling mechanisms 20 are provided on the tank body 10, and the plurality of press-type sampling mechanisms 20 are arranged and installed on the tank body 10 in sequence from top to bottom along the height direction, and a squeezing mechanism 30 for squeezing and driving the plurality of press-type sampling mechanisms 20 is provided on the outside of the tank body 10, so that a plurality of press-type sampling mechanisms 20 can be controlled to perform sampling at the same time.

[0033] The press-type sampling mechanism 20 includes a connecting tube 21 fixed on the outer wall of the tank body 10 and a sampling tube 22 slidably connected to the connecting tube 21. The connecting tube 21 passes through the outer wall of the tank body 10 to connect the interior and exterior of the tank body 10. A quantitative component 23 is provided on the sampling tube 22. A discharge component 25 and a push rod 26 are respectively provided on the quantitative component 23. The push rod 26 is connected to the discharge component 25 to drive the discharge component 25 to open and discharge the material in the sampling tube 22 to achieve sampling.

[0034] Reference Figure 4 and Figure 5 A first return spring 24 is connected between the connecting pipe 21 and the sampling tube 22 , and a feed port 221 is provided on one side of the sampling tube 22 located in the tank body 10 , and a discharge port 222 is provided on the other side, and the discharge port 222 opens downward.

[0035] The dosing assembly 23 includes a sealing piston 231 that is slidably connected to the sampling tube 22 and an adjusting rod 232 fixedly connected to the outside of the sealing piston 231. The sealing piston 231 is located between the feed port 221 and the discharge port 222. The adjusting rod 232 is slidably connected to the sampling tube 22. To facilitate determining the position of the sealing piston 231 within the sampling tube 22, a scale can be provided along the length of the outer surface of the adjusting rod 232 (the scale is not shown in the accompanying drawings). A locking member 233 is provided between the adjusting rod 232 and the sampling tube 22. The locking member 233 is a bolt that is threadedly connected to the sampling tube 22. In its initial state, the bolt is tightened, at which point the inner end of the bolt presses against the outer surface of the adjusting rod 232, thereby locking the adjusting rod 232 with the sampling tube 22.

[0036] Reference Figures 6 to 8 The discharge assembly 25 includes a discharge hole 251 formed at the bottom of the sealing piston 231 and a sealing plug 252 inserted into the discharge hole 251. A connecting rod 253 is connected between the sealing plug 252 and the push rod 26. Specifically, one end of the connecting rod 253 is hinged to the sealing plug 252, and the other end is hinged to the push rod 26. The sealing plug 252 is L-shaped, and its upper end is rotatably connected to the side of the sealing piston 231 away from the adjustment rod 232. The lower end is inserted into the discharge hole 251 to seal the discharge hole 251. The end of the sealing plug 252 inserted into the discharge hole 251 is wedge-shaped, which facilitates the insertion and sealing of the sealing plug 252 into the discharge hole 251.

[0037] The push rod 26 is slidably connected to the adjustment rod 232 and extends through the sealing piston 231. A second sealing ring 29 is installed between the push rod 26 and the sealing piston 231. The second sealing ring 29 is a sliding sealing ring that ensures the seal between the push rod 26 and the sealing piston 231. A second return spring 27 is connected between the push rod 26 and the adjustment rod 232. The elastic force of the second return spring 27 is less than the elastic force of the first return spring 24. In the non-sampling state, the second return spring 27 and the first return spring 24 are both in a state of some degree of compression, but not completely compressed.

[0038] Reference Figure 4 and Figure 5 A sealing assembly 28 is provided between the connecting pipe 21 and the sampling pipe 22 for sealing the connecting pipe 21 and the sampling pipe 22 .

[0039] The sealing assembly 28 includes a first sealing ring 281 and an airbag sealing ring 282, each fixed to the inner surface of the connecting tube 21. Both the first sealing ring 281 and the airbag sealing ring 282 are sleeved onto the sampling tube 22. The first sealing ring 281 is a sliding sealing ring. In the initial state, the feed port 221 is located within the first sealing ring 281 and the connecting tube 21. Therefore, in this state, the liquid material in the tank body 10 cannot enter the feed port 221. An annular extrusion member 283 for squeezing the airbag sealing ring 282 is fixed to the outside of the sampling tube 22. Specifically, an annular mounting groove 212 is defined on the inner surface of the connecting tube 21. The airbag sealing ring 282 is fixedly mounted within the mounting groove 212, while the annular extrusion member 283 is sleeved and fixed onto the sampling tube 22 and slidably connected within the mounting groove 212.

[0040] The sealing assembly 28 also includes an annular sealing groove 211 and a sealing gasket 284. The sealing groove 211 is opened at one end of the connecting tube 21 located in the tank body 10. The sealing gasket 284 is fixed to one side of the sampling tube 22 located in the tank body 10 and is arranged opposite to the sealing groove 211. Specifically, the end of the sampling tube 22 located in the tank body 10 is stepped, and the sealing gasket 284 is fixed to the stepped surface of the inner end of the sampling tube 22.

[0041] Reference Figure 1 、 Figure 2 and Figure 9 The extrusion mechanism 30 includes a pressure rod 31 and a plurality of slide rails 32. The slide rails 32 are fixed to the outer surface of the tank body 10. The pressure rod 31 is slidably connected to the slide rails 32. Figure 9 As shown, each slide rail 32 is composed of two channel-shaped slideways, and the two slideways are symmetrically installed. Two rollers 33 are also symmetrically installed on the outer side of the pressure rod 31, and the two rollers 33 are respectively rolled in the long grooves of the two slideways.

[0042] The number of slide rails 32 is the same as the number of push-type sampling mechanisms 20, and each slide rail 32 is installed directly below each push-type sampling mechanism 20, and two placement grooves 321 are provided on the upper surface of the slide rail 32. The two placement grooves 321 are arranged along the sliding direction of the pressure rod 31. The placement groove 321 close to the tank body 10 is used to place the waste liquid collection bottle 41, and the placement groove 321 away from the tank body 10 is used to place the sample collection bottle 42.

[0043] In the present invention, before sampling, the waste liquid collection bottle 41 and the sample collection bottle 42 are placed in the two placement grooves 321 respectively. At this time, the discharge port 222 is just above the sample collection bottle 42. Then, when sampling, by pressing the pressure rod 31 in the direction of the tank body 10, it slides along the slide rail 32 in the direction of the tank body 10, and the outer end of the push rod 26 can be squeezed. Since the elastic force of the second return spring 27 is less than the elastic force of the first return spring 24, the push rod 26 can be pushed to slide inward on the adjustment rod 232 and the sealing piston 231 during this process, and at the same time, the second return spring 27 is further compressed. The sliding of the push rod 26 can pull the sealing plug 252 out of the discharge hole 251 through the connecting rod 253. The state after pulling out is as shown in FIG. Figure 8 As shown, the discharge hole 251 is in an open state at this time.

[0044] Then, when the second return spring 27 is compressed to the limit, the push rod 26 can be restricted from sliding on the adjusting rod 232, and as the pressure rod 31 is pushed to slide, the sampling tube 22 can be pushed to slide in the connecting tube 21 through the adjusting rod 232, and the first return spring 24 can be further compressed, and the feed port 221 can be pushed out to the outside of the connecting tube 21 and the first sealing ring 281 at the same time. At this time, the liquid material in the tank body 10 can enter the sampling tube 22 through the feed port 221, and flow outward along the sampling tube 22, and will flow outward after passing through the discharge hole 251. To the discharge port 222, and discharged downwardly through the discharge port 222, and before that, the discharge port 222 has moved to the top of the waste liquid collection bottle 41 as the sampling tube 22 slides, so at this time the liquid material can be discharged downwardly through the discharge port 222 into the waste liquid collection bottle 41, and in the process of discharging, the flowing liquid material can flush the sampling tube 22 to a certain extent, thereby flushing the material or pollutants previously remaining in the sampling tube 22 into the waste liquid collection bottle 41, achieving the purpose of flushing, discharging and collecting the initial waste liquid, and avoiding affecting the subsequent collection.

[0045] After the initial waste liquid is discharged for a certain period of time, the pressure rod 31 is released and reset, and then the sampling tube 22 and the push rod 26 can be reset under the rebound force of the first reset spring 24 and the second reset spring 27, and then the sealing plug 252 is pushed back to its original position through the connecting rod 253 and reinserted into the discharge hole 251, so as to seal the discharge hole 251. Figure 7 As shown, at this time, the feed port 221 is also retracted into the first sealing ring 281, and the material in the tank body 10 can no longer enter the feed port 221. At this time, a certain amount of liquid material is stored in the sampling tube 22 between the feed port 221 and the sealing piston 231, and this part of the material is the material to be sampled. In this state, the discharge port 222 is also reset along with the sampling tube 22 and slides back to the top of the sample collection bottle 42.

[0046] When the material temporarily stored in the sampling tube 22 needs to be discharged, it is only necessary to push the pressure rod 31 again to slide a certain distance to push the push rod 26 to slide and compress the second return spring 27. The sliding of the push rod 26 can again pull the sealing plug 252 out of the discharge hole 251 through the connecting rod 253 and open the discharge hole 251. Then, the pressure rod 31 is immediately stopped and kept at this position. At this time, the liquid material temporarily stored in the sampling tube 22 can pass through the discharge hole 251 and the discharge hole 251 in turn. The material outlet 222 is discharged into the sample collection bottle 42, so as to achieve the purpose of quantitative collection of the liquid material. In this process, since the sampling tube 22 does not slide and the feed port 221 does not extend, the material in the tank body 10 will not continue to be discharged outward. After the liquid material temporarily stored in the sampling tube 22 is discharged, the pressure rod 31 is released and reset, and then the push rod 26 can be reset under the rebound force of the second reset spring 27, and the discharge hole 251 can be sealed again by the sealing plug 252.

[0047] As can be seen from the above, by simply pushing the push rod 31, multiple push-type sampling mechanisms 20 can simultaneously sample, thereby greatly reducing the workload of sampling and avoiding duplication of work. In addition, when sampling a certain part is required, it is only necessary to press the corresponding push rod 26 separately, thus achieving the purpose of individual sampling, making the sampling work more flexible and practical.

[0048] When it is necessary to adjust the sampling amount of the material, it is only necessary to loosen the bolts on the sampling tube 22 to release the compression restriction on the adjusting rod 232, and then the adjusting rod 232 can be pulled or pushed to slide on the sampling tube 22, thereby driving the sealing piston 231 to slide in the sampling tube 22, thereby adjusting the distance between the sealing piston 231 and the feed port 221, and thus adjusting the volume of the cavity in the sampling tube 22 for temporarily storing liquid materials, thereby achieving the purpose of adjusting the sampling amount and further improving the flexibility of the sampling work.

[0049] When the sampling tube 22 slides in the connecting tube 21 and extends the feed port 221 outward, the liquid material enters the sampling tube 22 through the feed port 221. Under the action of the first sealing ring 281, a layer of sealing can be achieved between the connecting tube 21 and the sampling tube 22. At the same time, the airbag sealing ring 282 will also achieve a second layer of sealing, and the annular extrusion piece 283 will also follow the feed port 221 and be tightly pressed on the airbag sealing ring 282. After being squeezed, the airbag sealing ring 282 will have a certain deformation tendency, and its inner ring will also tend to shrink, so that the airbag sealing ring 282 is more tightly fitted on the sampling tube 22, thereby achieving the purpose of further improving the sealing performance.

[0050] When sampling is completed and the first return spring 24 pushes the sampling tube 22 back to its original position, the sealing gasket 284 will slide with the sampling tube 22 and be inserted into the sealing groove 211. Moreover, under the elastic force of the first return spring 24, the sampling tube 22 will press the sealing gasket 284 tightly into the sealing groove 211, thereby ensuring the sealing between the sampling tube 22 and the connecting tube 21 in the non-sampling state. It can be seen that whether in the sampling process or not, the sealing assembly 28 can provide a reliable seal between the sampling tube 22 and the connecting tube 21, ensuring the normal progress of fermentation and sampling work.

[0051] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. A fermentation tank with a sampling function, comprising a tank body (10), characterized in that: The tank body (10) is provided with a plurality of press-type sampling mechanisms (20), and the outside of the tank body (10) is provided with an extrusion mechanism (30) for extruding and driving the press-type sampling mechanism (20), the press-type sampling mechanism (20) comprising a connecting pipe (21) fixed on the outer wall of the tank body (10) and a sampling tube (22) slidably connected to the connecting pipe (21), a quantitative component (23) is provided on the sampling tube (22), and a discharge component (25) and a push rod (26) are respectively provided on the quantitative component (23), and the push rod (26) is connected to the discharge component (25) and is used to drive the discharge component (25) to open and discharge material; A first return spring (24) is connected between the connecting pipe (21) and the sampling pipe (22), and the sampling pipe (22) is provided with a feed port (221) on one side thereof located in the tank body (10) and a discharge port (222) on the other side thereof; The quantitative assembly (23) comprises a sealing piston (231) slidably connected to the inside of the sampling tube (22) and an adjusting rod (232) fixedly connected to the outside of the sealing piston (231); the sealing piston (231) is located between the feed port (221) and the discharge port (222); and a locking member (233) is provided between the adjusting rod (232) and the sampling tube (22).

2. The fermentation tank with sampling function according to claim 1, characterized in that: The discharge assembly (25) includes a discharge hole (251) provided at the lower portion of the sealing piston (231) and a sealing plug (252) inserted into the discharge hole (251). The sealing plug (252) is rotatably connected to the sealing piston (231), and a connecting rod (253) is connected between the sealing plug (252) and the push rod (26).

3. The fermentation tank with sampling function according to claim 1, characterized in that: The push rod (26) is slidably connected to the adjustment rod (232), and a second return spring (27) is connected between the push rod (26) and the adjustment rod (232).

4. The fermentation tank with sampling function according to claim 1, characterized in that: A sealing assembly (28) is provided between the connecting tube (21) and the sampling tube (22) for sealing the connecting tube (21) and the sampling tube (22).

5. The fermentation tank with sampling function according to claim 4, characterized in that: The sealing assembly (28) comprises a first sealing ring (281) and an airbag sealing ring (282) respectively fixed to the inner surface of the connecting tube (21); the first sealing ring (281) and the airbag sealing ring (282) are both sleeved on the sampling tube (22); and an extrusion member (283) for extruding the airbag sealing ring (282) is fixed to the outside of the sampling tube (22).

6. The fermentation tank with sampling function according to claim 5, characterized in that: The sealing assembly (28) further includes an annular sealing groove (211) and a sealing gasket (284). The sealing groove (211) is opened at one end of the connecting pipe (21) located in the tank body (10). The sealing gasket (284) is fixed to one side of the sampling tube (22) located in the tank body (10) and is arranged opposite to the sealing groove (211).

7. The fermentation tank with sampling function according to claim 1, characterized in that: The squeezing mechanism (30) comprises a pressing rod (31) and a slide rail (32), wherein the slide rail (32) is fixed to the outer surface of the tank body (10), and the pressing rod (31) is slidably connected to the slide rail (32).

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